JP2019043121A - Recording device - Google Patents

Abstract

To provide a recording device which can solve at least one of problems caused when a fixed position of a guide member is adjusted relative to a frame member by using a cam member.SOLUTION: A recording device 11 includes: a carriage having a recording head; a guide member 32 which guides the carriage so that the carriage can move in a scanning direction; a main frame 31 (one example of a frame member) which supports the guide member 32 so that the guide member 32 can relatively move in a vertical direction Z; and multiple (for example, a pair of) adjustment mechanisms 50 which respectively have cam members 51, which adjust a position of the guide member 32 relative to the main frame 31 in the vertical direction Z, and are disposed at different positions in the scanning direction X. Further, the recording device 11 includes a spring (one example of a biasing member) which biases the guide member 32 relative to the main frame 31 in a gravity direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a recording apparatus provided with an adjustment mechanism capable of adjusting a fixed position at which a guide member for guiding a carriage having a recording portion in a scanning direction so as to be movable is assembled to a frame member.

  Patent Document 1 discloses a recording apparatus in which a recording head prints on a medium while a carriage having a recording head moves in a scanning direction along a rail member (an example of a guide member). A rail member slidably supporting the carriage is fixed to a frame member (chassis) disposed in a housing of the recording apparatus. A support for supporting the medium being conveyed is disposed below the movement path of the recording head, and the medium is supported by the support to define the gap between the medium and the recording head. In addition, the recording apparatus is provided with an automatic gap adjusting device that adjusts the gap according to, for example, the type of medium.

  In order to accurately adjust the gap between the medium and the recording head by the automatic gap adjusting device, it is necessary to adjust the fixing position of the rail member with respect to the frame member in consideration of dimensional variations and assembly variations of parts. That is, it is necessary to adjust the rail member with respect to the frame member so that the gap and the gap between the support and the recording head become constant throughout the scanning direction. For that purpose, the recording apparatus described in Patent Document 1 is provided with position adjusting means (an example of an adjusting mechanism) capable of adjusting the fixing position of the rail member with respect to the frame member.

  The adjusting mechanism has a cam bolt (an example of a cam member) having an eccentric cam, and a cam opening having a cam surface formed on the rail member. A plurality of adjustment mechanisms are provided at a plurality of different positions in the longitudinal direction (scanning direction) of the rail member. Further, the frame and the rail member are fixed at a plurality of locations by a plurality of fixing means (bolts, elongated holes, etc.). When adjusting the gap of the recording head (the distance between sheets), when the cam bolt is rotated in one direction with the nut and fixing means loosened, the rail member is pushed up by the cam and the cam bolt is rotated in the other direction. The cam separates downward from the rail member, and the rail member descends under its own weight. Then, after adjusting the position of the rail member with respect to the frame member, the rail member is fixed to the frame member at the adjustment position by tightening the nut and fixing means of the cam bolt.

JP 2005-349776 A

  However, in the recording apparatus described in Patent Document 1, when adjusting the gap of the recording head, if the nut and the fixing means are loosened and a gap is formed between the frame member and the rail member, the rail member is against the frame member. I lean a little. In this state, when the cam bolt is rotated in the other direction to lower the rail member, a relatively large resistance load is generated between the two members, such as the rail member being caught by the frame member due to its inclination. May be difficult to fall off. In this case, for example, when the user adjusts the rotational amount of the cam bolt as a guide and then tightens the nut and the fixing means, the rail member is fixed to the frame member at an inappropriate position. In addition, after adjusting the position in a posture where the rail member is inclined, in the process of tightening the nut, the position is shifted due to a change in posture when the inclined rail member returns to a posture parallel to the frame member, and the rail member is inappropriate. It will be fixed to the frame member at the position. Moreover, in order to avoid these, the operator had to perform adjustment work while pushing the rail member downward using a jig. For this reason, there is a problem that the adjustment position accuracy is difficult to obtain, and the adjustment operation for performing the adjustment is troublesome.

In addition, since the position adjusting means receives the load of the rail member by the cam bolt, there is a problem that it is necessary to increase the strength of the cam bolt.
An object of the present invention is to provide a recording apparatus capable of solving at least one of the problems that occur when adjusting the fixed position of a guide member with respect to a frame member using a cam member.

Hereinafter, the means for solving the above-mentioned subject and its operation effect are described.
A recording apparatus for solving the above problems includes a carriage having a recording unit, a guide member for guiding the carriage movably in the scanning direction, a frame member for supporting the guide member so as to be relatively movable in the vertical direction, and the frame A cam member for adjusting the relative position of the guide member in the vertical direction with respect to the member, a plurality of adjustment mechanisms disposed at different positions in the scanning direction, and attaching the guide member in the gravity direction with respect to the frame member And a biasing member for biasing. The biasing member may include the direction of gravity as a component of the force for biasing the guide member.

  According to this configuration, the relative position of the guide member in the vertical direction to the frame member is adjusted by displacing the cam members of the plurality of adjustment mechanisms arranged at different positions in the scanning direction. When adjusting the relative position of the guide member to the frame member by the adjustment mechanism, the fixation (including the fixation of the cam member) of the guide member to the frame member is loosened first. At this time, due to the gap formed between the frame member and the guide member, the guide member is inclined with respect to the frame member, and the resistance causes the guide member to be caught on the frame member due to the inclination. In this case, even if the cam member of the adjustment mechanism is operated in such a direction that the guide member moves (drops) relative to the frame member in the direction of gravity (lower side in the vertical direction), the guide member It is feared that it does not move in the direction of gravity following the displacement of the member. However, since the guide member is biased in the direction of gravity with respect to the frame member by the biasing member, at that time, even if there is load resistance such as hooking of the guide member to the frame member, the operation of the cam member is followed The guide member can be lowered almost reliably. Therefore, extra work such as pushing down the guide member with the use of a jig or the like is not necessary, and the adjustment work of adjusting the relative position of the guide member in the vertical direction with respect to the frame member can be simply and accurately performed.

  A recording apparatus to solve the above problems is a carriage having a recording unit, and a member extending in the scanning direction of the carriage, wherein the recording unit is a normal line extending in a direction parallel to the conveyance direction of the medium to be recorded. A frame member having a first surface having a first surface, and a first convex portion extending in a direction in which the normal line extends, and a member extending in the scanning direction of the carriage, and disposed opposite to the first surface A guide member having a second surface and a second convex portion extending in a direction in which the normal line extends, and guiding the carriage movably in the scanning direction, a first sliding surface, and a second sliding surface An adjusting mechanism including a cam member having the first sliding surface, the first sliding surface being in a state in which the first surface of the frame member abuts on the second surface of the guide member; It is slidable with the said 1st convex part, and the said 2 sliding surface is slidable with the second convex portion, and the contact position of the first convex portion with which the first sliding surface contacts, and the second convex portion with which the second sliding surface abuts The first position of the first sliding surface is in contact with the first convex portion, and the first position of the second sliding surface is the second convex portion. In the case of contact, and in the case where the second position of the first sliding surface is in contact with the first convex portion and the second position of the second sliding surface is in contact with the second convex portion, It is different.

  According to this configuration, the position where the first sliding surface abuts on the first convex portion of the frame member by operating the cam member of the adjustment mechanism in a state where the fixing of the guide member to the frame member is loosened; The relative position of the guide member in the vertical direction with respect to the frame member is adjusted by changing the position where the second sliding surface abuts on the second convex portion of the guide member. At this time, the load applied to the cam member is dispersed at the contact portion between the first sliding surface of the cam member and the first convex portion and at the contact portion between the second sliding surface and the second convex portion. It is possible to prevent a load from being concentrated on a specific part of the cam member (for example, a pivot shaft when the cam member is a pivot cam).

  In the recording apparatus, the second convex portion further includes an urging member positioned above the first convex portion and urging the guide member with respect to the frame member, and the guide member It is preferable that a third convex portion extending in a direction opposite to the normal direction is provided, and the biasing member bias the third convex portion in a gravity direction.

  According to this configuration, when the guide mechanism is lowered to the lower side in the vertical direction with respect to the frame member by the adjustment mechanism, the fixing (including the fixing of the cam member) of the guide member to the frame member is loosened The guide member is operated in the direction to lower it downward in the vertical direction with respect to the member. At this time, the guide member is biased in the direction of gravity with respect to the frame member by the biasing member biasing the third convex portion in the direction of gravity, so that some resistance load such as catching on the guide member is generated. Even if the guide member is lowered, the guide member can be lowered almost reliably following the operation of the cam member. For this reason, since the extra operation | work which pushes down a guide member using a jig | tool etc. becomes unnecessary, adjustment operation can be performed simply and correctly.

  In the recording apparatus, when the biasing member is a first biasing member, a second biasing that presses the guide member against the frame member in a direction intersecting with the scanning direction and the gravity direction. Preferably, a member is provided.

  According to this configuration, the biasing force of the second biasing member causes the guide member to intersect the frame member in the scanning direction and the gravity direction (vertical direction), that is, the direction in which the guide member intersects the frame member. When the position is adjusted in the vertical direction, both surfaces (the first surface of the frame member and the second surface of the guide member) sliding in the vertical direction are pressed in a direction to abut. Therefore, when the fixing (for example, the fastening member) of the guide member to the frame member is loosened, it is difficult to form a gap between both surfaces of the guide member and the frame member, and the guide member does not tilt easily with respect to the frame member. Therefore, since the resistance load such that the guide member is hooked on the frame member can be reduced, it is possible to eliminate or reduce the extra work such as pushing the guide member with a jig. In addition, in the case where the guide member is fixed from the posture in which it inclines with respect to the frame member after adjustment, there is a concern that the adjustment position of the guide member may shift in the process of posture change which loses the inclination. Because the guide member is fixed to the frame member after the adjustment, the adjustment position of the guide member is unlikely to be shifted before and after the adjustment. Therefore, the adjustment operation of adjusting the fixed position of the guide member with respect to the frame member to adjust the height position of the recording head can be performed easily and accurately.

  In the recording apparatus, it is preferable that the first biasing member doubles as the second biasing member, and bias the guide member in the direction of gravity and the pressing direction with respect to the frame member.

  According to this configuration, the first biasing member doubles as the second biasing member and biases the guide member against the frame member in the direction of gravity and in the pressing direction. The biasing member can be eliminated.

  The recording apparatus further includes a plurality of fixing members for fixing the guide member to the frame member by fastening, and the plurality of fixing members divide the frame member into three equal parts in the scanning direction. Within the range of 1, it is preferable to be fastened at different positions in the vertical direction.

  According to this configuration, when the fixing member is fastened and the guide member is fixed to the frame member after adjustment by the cam member, both curved surfaces of the frame member and the guide member are forced to be in pressure contact. It is possible to avoid a situation in which the relative position (adjusted position) of the guide member after adjustment relative to the frame member fluctuates in the vertical direction due to the distortion of the frame member and the guide member caused in the above.

In the recording apparatus, preferably, the plurality of fixing members are fastened at positions outside the fastening positions of the plurality of cam members in the scanning direction of the frame member.
According to this configuration, even if the adjustment mechanism is disposed within the range of both sides of the frame member divided into three equal parts in the scanning direction, the plurality of fixing members do not exceed the fastening position of the adjustment mechanism in the scanning direction. Since fastening is performed on the outer side, it is possible to effectively avoid a situation where the relative position (adjustment position) of the guide member after adjustment with respect to the frame member changes in the vertical direction.

  In the recording apparatus, the cam member has a first sliding surface and a second sliding surface, and a second curvature radius of the second sliding surface is greater than a first curvature radius of the first sliding surface. Also, the rotation center of the cam member is eccentric from the center of the second virtual circle formed by the second sliding surface, and the cam member is outside the second virtual circle and the first slide The cam has a first opening along the first sliding surface inside a first virtual circle formed by the surface, and the adjustment mechanism is fastened to the guide member via the first opening, thereby the cam A fastening member for securing the member to the guide member, wherein the guide member and the fastening member are perpendicular to the frame member in response to a change in the relative position of the guide member to the frame member by the adjusting mechanism It is preferable to move relatively.

  According to this configuration, when the cam member is pivoted, the cam member pivots with relative movement in the vertical direction with respect to the frame member, so that the vertical position adjustment of the guide member with respect to the frame member is possible. is there. The fastening member is fastened to the guide member through the first opening of the cam member. After adjusting the position of the guide member by the cam member while loosening the fastening member, the fastening member is fixed to the guide member even if the fastening member is fastened, so the opposing surfaces of the frame member and the guide member are forced It does not press it. Therefore, the relative position of the guide member after adjustment with respect to the frame member fluctuates in the vertical direction due to the distortion of the frame member and the guide member caused by forced pressure contact between the opposing surfaces of the frame member and the guide member. Can be avoided more effectively.

  In the recording apparatus, the cam member has a first sliding surface and a second sliding surface, and a second curvature radius of the second sliding surface is greater than a first curvature radius of the first sliding surface. It is preferable that the rotation center of the cam member be eccentric from the center of a second virtual circle formed by the second sliding surface.

According to this configuration, fine adjustment can be easily performed when the position adjustment of the guide member is performed by rotating the cam member.
In the above recording apparatus, the cam member has a first opening along the first sliding surface outside the second virtual circle and inside a first virtual circle formed by the first sliding surface. The adjusting mechanism preferably includes a fastening member fastened to the frame member and the guide member via the first opening.

  According to this configuration, one fastening member serves the function of fixing the cam member at the adjustment position and the function of fastening and fixing the frame member and the guide member. The number of fixing points at which the other fastening members secure the frame member and the guide member is relatively reduced, and the adjustment operation is relatively easy. Moreover, since the cam member can be fixed at a position outside the second virtual circle, the cam member can be firmly fixed at the adjusted rotational position as compared with the case where the cam member is fixed at a position inside the second virtual circle. Can.

  In the recording apparatus, the cam member is provided on a side of the frame member and the guide member facing the scanning path of the carriage, and the cam member is rotated from the center of the second virtual circle formed by the second sliding surface. It has an eccentric shaft portion rotatably supported by the frame member in a state in which the movement center is eccentric, and the end surface of the eccentric shaft portion on the side opposite to the scanning path of the carriage has a tool at the rotation center It is preferable that an engaged portion engageable with the arm is provided.

  According to this configuration, when the operator opens the cover of the housing of the recording apparatus to make the carriage visible, the operator is on the front side (the side facing the scanning path of the carriage) of the guide member on which the carriage is guided. Since the adjustment mechanism is located, the adjustment mechanism can be accessed relatively easily to perform the adjustment operation. At this time, if the tool is engaged with the engaged portion provided on the end face of the eccentric shaft portion of the cam member opposite to the scanning path of the carriage, the cam member can be easily and finely adjusted using the tool. It can be moved. Therefore, the position adjustment of the guide member and the height adjustment of the recording head associated therewith can be easily and accurately performed.

  In the recording apparatus, when the engaged portion is a first engaged portion, the cam member is an end surface of the eccentric shaft portion opposite to the end surface provided with the first engaged portion. It is preferable to have the 2nd to-be-engaged part which can be engaged with a tool in the said rotation center.

  According to this configuration, when the operator opens the cover on the rear side, for example, of the housing of the recording apparatus, the end face of the eccentric shaft portion exposed from the side of the side opposite to the side facing the carriage of the frame member The second end face can be seen. If the tool is engaged with the second engaged portion provided on the second end face of the eccentric shaft portion, the cam member can be rotated easily and finely adjustable using the tool. For example, when it is desired to arrange the carriage at a position where the adjusting mechanism hides to adjust the height of the guide member, access to the adjusting mechanism becomes difficult. In this case, when the cover on the rear side of the housing is opened, the cam member can be rotated by engaging the tool with the second engaged portion exposed on the rear side of the frame member.

In the recording apparatus, it is preferable that the first engaged portion and the second engaged portion have different shapes.
According to this configuration, even if it does not have a tool that can be engaged with one of the first engaged portion and the second engaged portion, it has a tool that can be engaged with the other. The tool can be used to pivot the cam member easily and finely.

  In the recording apparatus, one of the first engaged portion and the second engaged portion has a shape engageable with a driver, and the other has a shape engageable with a polygonal wrench. Is preferred.

According to this configuration, if at least one of the driver and the polygonal wrench is possessed, the cam member can be easily rotated using the one tool.
In the recording apparatus, the cam member has an eccentric shaft portion including a shaft portion rotatably supported by the frame member, and the frame member has a second opening through which the shaft portion can be inserted. The shaft portion has a restriction projection for retaining that protrudes outward in the radial direction of the shaft portion, and the second opening is a circular hole through which a portion other than the restriction projection in the shaft portion can be inserted. And a restriction hole extending radially outward from the circular hole so as to allow insertion of the restriction protrusion, and the cam member rotates within a range in which the restriction protrusion and the restriction hole do not face each other. It is preferable to be provided movable.

  According to this configuration, when the cam member is in a rotational posture in which the restricting convex portion and the restricting hole portion are opposed to each other, the axial portion is inserted through the second opening while the restricting convex portion is inserted into the restricting hole portion. The member can be assembled to the frame member. After the assembly, the control convex portion and the control hole do not face each other in the rotation range of the cam member at the time of adjustment. Therefore, at the time of adjustment, the cam member can be rotated in a state of being prevented from coming off the frame member.

  In the above recording apparatus, the adjustment mechanism is provided in a pair at different positions in the scanning direction, and the pair of adjustment mechanisms are positioned at an interval equal to or greater than the width of the carriage in the scanning direction in the scanning direction. And one of the pair of adjustment mechanisms on the side of the standby position set at one end of the scanning path of the carriage is disposed at a position on the inner side in the scanning direction than the carriage when in the standby position. Is preferred.

  According to this configuration, the height adjustment of the guide member is performed by operating the cam member of the adjustment mechanism while measuring the height of the recording unit (for example, including the gap between the recording unit and the support for supporting the medium). Even when the carriage is disposed near the center of the scanning path and the carriage is disposed at the standby position at the end of the scanning path, the pair of adjustment mechanisms are less likely to be hidden by the carriage. Therefore, the operator can adjust the position of the guide member while looking at the adjusting mechanism.

  In the above recording apparatus, it is preferable that the recording apparatus further includes a holding portion that holds the cam member operated to the rotation limit position in the direction of displacing the guide member in the direction of gravity.

  According to this configuration, for example, after the cam member is operated to adjust the position of the guide member in the vertical direction, the guide member is temporarily fixed to the frame member by another fastening member other than the adjustment mechanism. Thereafter, the cam member can be held in a separated state from the guide member by operating the cam member to the rotation limit position in the direction of displacement in the direction of gravity and holding the cam member at the rotation limit position by the holding portion. For this reason, members such as the cam member, the guide member, and the frame member vibrate, for example, when transporting the recording apparatus, or change in environmental temperature or heat of some heat source (for example, heater for drying electronic components and media) Even if the thermal expansion occurs, the displacement of the fixed position (relative position) of the guide member with respect to the frame member due to the vibration and the thermal expansion can be avoided.

FIG. 1 is a schematic perspective view of a recording apparatus according to a first embodiment. FIG. 2 is a schematic perspective view showing the recording apparatus from which the housing has been removed. FIG. 2 is a schematic perspective view showing the recording apparatus from which a housing and a carriage are removed. The front view which shows the fixed state using the adjustment mechanism of a main frame and a guide member. The sectional side view which shows the main frame and guide member which were position-adjusted by the adjustment mechanism. FIG. 7 is a schematic side sectional view of the mounting point of the leaf spring. The rear perspective view which shows the state which the guide member was urged | biased by the spring with respect to the main frame by the spring. The front view which shows an adjustment mechanism. The front view which shows the state which rotated the adjustment mechanism to the retracted position. The front view which shows the fixed state using the adjustment mechanism of the main frame and guide member in 2nd Embodiment. The back surface perspective view which shows biasing structure. The side sectional view showing the energizing structure similarly. The front view which shows the fixed state using the adjustment mechanism of the main frame and guide member in 3rd Embodiment. The perspective view which shows the fixed state using the adjustment mechanism of a main frame and a guide member. Sectional drawing cut | disconnected by 15F-15F arrow in FIG. The front view which shows an adjustment mechanism when a cam member is in a neutral position. The front view which shows an adjustment mechanism when a cam member exists in the position by the side of a raise. The back surface perspective view which shows the biasing structure in a modification.

First Embodiment
Hereinafter, a first embodiment of the recording apparatus will be described with reference to the drawings. The recording device 11 illustrated in FIG. 1 is, for example, an ink jet printer that ejects ink onto a medium such as paper to record (print) the ink.

  As illustrated in FIG. 1, the recording apparatus 11 includes a substantially rectangular parallelepiped housing 12 having predetermined lengths as height, depth, and width in a state of being installed at a use place. In the drawing, assuming that the recording device 11 is placed on a horizontal surface, a direction parallel to the direction of gravity is indicated by the Z axis, and is taken as the vertical direction Z. Of the side surfaces of the housing 12, the surface that mainly performs the operation on the recording device 11 is referred to as the front surface.

  As shown in FIG. 1, in the lower part of the housing 12, a housing portion 14 in which one or more (four in the example of FIG. 1) ink containers 13 are housed, for example, with respect to the housing 12 It is inserted in the state covered with the front lid 15 which can be opened and closed. Further, the medium storage body 16 (cassette) inserted in and attached to the insertion opening 17 opened at the substantially central portion of the front surface of the housing 12 is disposed on the upper side of the storage portion 14. The medium container 16 can store a plurality of mediums M such as paper.

  A discharge tray 19 (stacker) from which the medium M is discharged from the discharge port 18 and an operation panel 20 operated when the user gives an instruction to the recording apparatus 11 are disposed above the medium container 16. . The operation panel 20 is connected to the housing 12 so as to be changeable in angle, for example, and a display unit made of, for example, a touch panel (liquid crystal display panel etc.) having functions of display and input operation on its front surface (front) 21 is provided. Note that an operation unit such as a switch may be provided separately from the display unit 21.

  As shown in FIG. 1, an ink supply source 22 such as an ink container that stores ink is removably stored in each container 13 in the storage unit 14. The ink supply source 22 accommodates different types of liquids (for example, inks of different colors such as black, cyan, magenta, and yellow).

  As shown in FIG. 1, printing is performed such that the ink or the like supplied from the ink supply source 22 is ejected onto the medium M supplied from the medium container 16 in the housing 12 to print an image or the like on the medium M A unit 23 is provided. The printing apparatus 11 of this example is a serial scan type printer, and the printing unit 23 is a carriage 24 that moves inside the housing 12 in the scanning direction X (main scanning direction), and a transport path of the medium M in the carriage 24 And a recording head 25 as an example of a recording unit attached to a portion (in the present example, the lower portion) facing the recording head. The recording head 25 has a nozzle opening surface 25A in which a plurality of nozzles for ejecting ink are opened.

  As shown in FIG. 1, the medium M fed backward from the medium container 16 is transported in the transport direction Y (sub-scanning direction Y) intersecting the scanning direction X with inversion. The recording device 11 conveys the medium M to the printing position of the next line, and moves the carriage 24 in the scanning direction X with respect to the medium M stopped at the printing position of the next line while moving the recording head 25. And the printing operation for printing one line (one pass) is alternately performed to print an image or the like based on the print data on the medium M. The recording apparatus 11 includes a control unit 100 that controls this printing control.

  As shown in FIG. 1, in the housing 12, a support base 26 (for example, a platen) having a support surface 26A for supporting the medium M transported in the transport direction Y at a position facing the recording head 25 is disposed. ing. The recording apparatus 11 has a gap (also referred to as a "platen gap") in the ink ejection direction (vertical direction Z in the example of FIG. 1) between the nozzle opening surface 25A of the recording head 25 and the support surface 26A of the support 26. The adjustment mechanism 50 (all refer to FIG. 2) is adjusted by adjusting the assembly position of the guide member 32 which guides the carriage 24 movably in the scanning direction X. In addition to the adjusting mechanism 50, the recording device 11 is provided with an automatic gap adjusting device GU. The control unit 100 controls the automatic gap adjusting device GU to adjust the gap according to the type (for example, paper type) of the medium M acquired from the input medium information. In order for the automatic gap adjusting device GU to accurately perform the gap adjustment, the guide member 32 for supporting the carriage 24 so that the specified gap G can be uniformly obtained over the entire range of movement of the recording head 25, the frame member It is premised that it is attached to the main frame 31 as an example. Therefore, in the recording apparatus 11, the guide member 32 is set to set the gap G between the recording head 25 and the support 26 to a uniform specified value in the entire scanning direction X at the time of inspection before shipment and maintenance after shipment. An adjustment mechanism 50 (all shown in FIG. 2) capable of adjusting the position in the vertical direction Z with respect to the main frame 31 is provided. Details of the adjustment mechanism 50 will be described later.

  FIG. 2 shows the recording apparatus 11 with the housing 12 removed. Moreover, FIG. 3 shows a state in which the housing 12 and the carriage 24 are removed. As shown in FIGS. 2 and 3, the recording apparatus 11 is assembled to the main frame 31 forming the main framework supporting various components and the main frame 31, and guides the carriage 24 to be movable in the scanning direction X The guide member 32 and the left and right side frames 33 forming side plates are provided. The main frame 31, the guide members 32, and the side frames 33 are made of metal, and are formed, for example, by bending a sheet metal.

  The main frame 31 is a long member extending in the scanning direction X of the carriage 24 and is a pair of stands erected on both sides of the opening 34 forming the transport path of the medium M in the scanning direction X. A portion 35 (see FIG. 3) and an elongated frame portion 36 provided to extend in the scanning direction X between upper end portions of the pair of stand portions 35 are provided. The stand 35 of the main frame 31 is fixed to a bottom plate (not shown).

  As shown in FIGS. 2 and 3, the guide member 32 is a member extending in the scanning direction X of the carriage 24. The guide member 32 movably guides the carriage 24 in the scanning direction X and is elongated in the scanning direction X It has a rail 37 (guide rail). The carriage 24 is guided by the first rail 37 of the guide member 32 at its lower rear surface, and the second rail 38 (guide rail) formed on the upper end of the main frame 31 so as to extend in the scanning direction X It is also guided at the upper end. The carriage 24 is movably guided in the scanning direction X at a plurality of locations by a plurality of rails including rails 37 and 38.

  As shown in FIGS. 2 and 3, a carriage motor 40 (see FIG. 3), which is a drive source of the carriage 24, is assembled on the back side of one end of the main frame 31 in the longitudinal direction. On the front side of the main frame 31, endless timing belts 41 are disposed on both sides in the scanning direction X in order to transmit the power from the carriage motor 40 to the carriage 24, as shown in FIG. It is stretched in a state of being wound around a pulley 42 (shown). The carriage 24 is fixed to a part of the timing belt 41 at its back surface portion, and reciprocates in the scanning path along the scanning direction X by the carriage motor 40 being driven forward and reverse.

  Further, as shown in FIG. 2 and FIG. 3, the recording apparatus 11 is provided with a conveyance unit 43 which conveys the medium M in the conveyance direction Y through the conveyance passage including the opening 34. Further, the above-described support base for supporting the medium M conveyed by the conveyance unit 43 in the printing area PA below the scanning path of the carriage 24 and when the carriage 24 prints on the medium M being conveyed. 26 (all refer to FIG. 3) are arranged. The support base 26 supports, from the bottom surface, a portion of the medium M which becomes an impact area of the ink droplet ejected from the recording head 25. The support base 26 of the present embodiment has a plurality of ribs provided on the upper surface thereof at intervals in the scanning direction X as shown in FIG. 3 and the upper end surfaces of the plurality of ribs support the medium M. It is a support surface 26A. Further, the transport unit 43 is disposed at each of upstream and downstream positions sandwiching the movement path of the recording head 25 in the transport direction Y, and a feed roller (not shown) for feeding the medium M from the medium container 16. A transport roller pair 45 for transporting the medium M in the transport direction Y and a discharge roller pair 46 (see FIG. 2) are provided. The transport unit 43 includes an electric motor (transport motor) (not shown) as a drive source for transport, and rotationally drives the feed roller and the roller pairs 45 and 46 by the power of the electric motor.

  Further, as shown in FIG. 2 and FIG. 3, power transfer for transmitting the power of the conveyance motor and the conveyance motor (not shown) to the respective roller pairs 45 and 46 on the left side frame 33 when viewed from the front of the recording device 11 A wheel train 47 constituting a mechanism, an encoder 48 (for example, a rotary encoder) for detecting the rotation of the conveyance motor, and the like are assembled. The control unit 100 controls the transport speed and the transport amount of the medium M based on the detection signal input from the encoder 48. Further, one end of the scanning path in which the carriage 24 shown in FIG. 2 is located is a home position HP (an example of a standby position) which stands by when the carriage 24 is not printing.

  In order to cause ink droplets ejected from the recording head 25 shown in FIG. 1 to land on the medium M as appropriate droplets and at appropriate positions, the gap between the recording head 25 and the medium M (“paper gap”) It is necessary to adjust) to an appropriate value. Therefore, when the control unit 100 acquires the type (medium type) of the medium M based on the input medium information, the automatic gap adjustment device GU is obtained so that a paper gap corresponding to the thickness determined from the type of medium M can be obtained. The gap G between the nozzle opening surface 25A of the recording head 25 and the support surface 26A of the support 26 is adjusted.

  By the way, at the stage before the shipment of the recording apparatus 11, the gap G between the recording head 25 and the support base 26 varies due to parts tolerance, assembly variation and the like. Therefore, in the process inspection before shipment of the recording device 11, the assembly position of the guide member 32 in the vertical direction Z with respect to the main frame 31 is adjusted so as to eliminate the gap variation caused by the component tolerance and the assembly variation. Thereby, the inclination and height of the rail 37 are adjusted so that the gap G between the recording head 25 and the support 26 becomes an appropriate value for initial setting.

  As shown in FIGS. 2 and 3, at the connection point between the main frame 31 and the guide member 32, the assembly position of the guide member 32 with respect to the main frame 31 is adjusted so that an appropriate gap G of initial setting is obtained. A pair of adjustment mechanisms 50 are provided at different positions in the scanning direction X. That is, the pair of adjustment mechanisms 50 is disposed at a position between the first rail 37 and the second rail 38 in the vertical direction Z, and is disposed at a different position in the scanning direction X. The adjustment mechanism 50 includes a cam member 51 that functions as an eccentric cam. The cam member 51 of this example is made of, for example, a synthetic resin, but may be made of metal. The cam member 51 is rotatably assembled to the main frame 31, and is fastened and fixed to the main frame 31 and the guide member 32 by a screw 52 as an example of a fastening member, and is held in the rotated attitude after adjustment. The operator adjusts the height and inclination of the guide member 32 with respect to the main frame 31 by rotating the cam members 51 arranged at two different positions in the scanning direction X, and the support base 26 and the recording head The gap G with 25 is finely adjusted so as to have a uniform reference value in the scanning direction X. By adjusting the height and the inclination of the guide member 32, the gap G when the automatic gap adjusting device GU adjusts according to the type of medium can be made uniform and highly accurate in the scanning direction X. .

  As shown in FIGS. 2 to 4, the pair of adjustment mechanisms 50 are provided at two positions on both sides of the center of the guide member 32 in the longitudinal direction (scanning direction X) in the scanning direction X and at predetermined positions. One is arranged. The recording apparatus 11 performs center feeding for feeding the medium M so that the width center of the conveyance path and the width center of the medium M coincide with each other. The pair of adjustment mechanisms 50 are arranged at positions on both sides of the center position of the area to which the medium M is fed in the scanning direction X.

  The pair of adjustment mechanisms 50 are disposed at two positions separated by a predetermined distance, which can be located on both sides of the scanning direction X of the carriage 24 disposed at a position between the scanning directions X. That is, the distance between the pair of adjustment mechanisms 50 in the scanning direction X is set to a value equal to or greater than the width dimension CW of the carriage 24 shown in FIG. Particularly, when viewed from the front as shown in FIG. 4 in a state where the carriage 24 is disposed near the center of the printing area PA, the pair of adjustment mechanisms 50 has a predetermined interval at which the pair of adjustment mechanisms 50 can be seen on both sides It is placed at two separate locations. Further, the pair of adjustment mechanisms 50 are arranged in the scanning direction X at a distance equal to or greater than the width of the minimum width medium that the recording device 11 is supposed to use. Further, as shown in FIG. 2, one of the pair of adjustment mechanisms 50 on the home position HP side is more inward in the scanning direction X than the carriage 24 disposed at the home position HP (left side in FIG. 2) It is arrange | positioned in the position used as (the printing area PA side). In particular, in a state where the carriage 24 is positioned at both ends (home position HP and anti-home position) in the scanning direction X, the pair of adjustment mechanisms 50 are positioned inside the scanning direction X rather than the carriage 24 without being hidden by the carriage 24 Is preferred.

  The guide member 32 shown in FIGS. 2 to 4 is in the direction of gravity (vertical direction Z) by the elastic force of the spring 61 (see FIG. 7) as an example of the biasing member (first biasing member) with respect to the main frame 31. It is biased to the lower side). Further, as shown in FIGS. 2 to 4, the main frame 31 and the guide member 32 are plates as an example of the second biasing member at a plurality of places (three in the example of the figure) different in position in the scanning direction X. It is fixed by a screw 63 fastened via a spring 62. The leaf spring 62 urges the guide member 32 in a direction (pressing direction) intersecting with the main frame 31 in two directions of the scanning direction X and the vertical direction Z. In other words, the plate spring 62 biases the guide member 32 against the main frame 31 in a direction parallel to the transport direction Y. The plate spring 62 is, for example, a resin spring, but may be a metal plate spring. The adjusting mechanisms 50 are disposed at positions on both sides sandwiching the two plate springs 62 in the scanning direction X. Further, the main frame 31 and the guide member 32 are fixed by a plurality of screws 64 at a plurality of places other than the fixing places of the cam member 51 and the plate spring 62 in the scanning direction X.

  Next, the detailed configuration of the adjustment mechanism 50 will be described with reference to FIGS. 5 to 9. As shown in FIG. 5, the frame portion 36 of the main frame 31 has a first surface 36 A (a front surface having a normal line extending in a direction parallel to the transport direction Y of the medium M to be printed (recording target) And a first convex portion 67 projecting in the direction in which the normal extends. Here, the transport direction Y is a direction orthogonal to the scanning direction X of the carriage 24 and the vertical direction Z parallel to the ink ejection direction of the recording head 25. That is, the main frame 31 has the first surface 36A with the transport direction Y as the normal, on the surface side of the frame portion 36 to which the guide member 32 is attached.

  On the other hand, the guide member 32 has the L-shaped cross section and a long support plate 39 extending in the scanning direction X, and the plate-like portion bent upward from the lower end of the support plate 39 as described above. And the first rail 37 of FIG. The frame portion 36 of the main frame 31 has an elongated shape with a C-shaped cross section, and the above-mentioned second rail 38 is formed by a plate-like portion whose upper end is bent downward. .

  Further, as shown in FIG. 5, the support plate portion 39 of the guide member 32 has a second surface 39 A (rear surface) opposite to the first surface 36 A of the frame portion 36 when assembled to the main frame 31; And a second convex portion 68 projecting in the direction in which the normal of 36 A extends. In a state where the guide member 32 is assembled to the main frame 31, the first surface 36A and the second surface 39A are in contact with each other. The adjustment mechanism 50 allows the operator to rotate the cam member 51 to slide the second surface 39A in the vertical direction Z with respect to the first surface 36A. Adjust the relative position (height) in the vertical direction Z.

  Further, as shown in FIG. 5, the frame portion 36 of the main frame 31 has a third surface 36B (rear surface) having a direction parallel to the transport direction Y as a normal to the rear surface side opposite to the first surface 36A. have. In addition, the support plate portion 39 of the guide member 32 has a fourth surface 39B (surface) on the surface side opposite to the second surface 39A (front side).

  As shown in FIG. 5, the adjusting mechanism 50 includes the cam member 51 and the cam member 51 provided rotatably on the main frame 31 on the guide member 32 and the main frame 31 in the rotational posture after adjustment. And a screw 52 for fixing. The cam member 51 is a female screw portion 65 provided on the frame portion 36 with the screw 52 inserted through the cam member 51 inserted through the support plate portion 39 in a state where the first surface 36A and the second surface 39A abut. It is fastened by being screwed on. The main frame 31 and the guide member 32 are positioned in the scanning direction X by the screw 52 of the adjusting mechanism 50, the screw 63 of the plate spring 62, and the screw 64 in a state where the first surface 36A and the second surface 39A abut. It is fixed at different locations. In the fixed state, the contact surface between the first surface 36A and the second surface 39A extends in the vertical direction Z when viewed from the side shown in FIG. For this reason, the main frame 31 and the guide member 32 can make relative movement in the vertical direction Z by sliding the first surface 36A and the second surface 39A in the vertical direction Z. For example, when the cam member 51 is pivoted in the direction of lowering the guide member 32 in a state where the screws 52, 63, 64 are loosened, the guide member 32 has the first surface 36A and the second surface 36A by its own weight. It moves relative to the main frame 31 downward in the vertical direction Z while sliding in the vertical direction Z with the surface 39A. The screws 63 and 64 are not shown female threads formed on the main frame 31 in a state of being inserted into long holes not shown and elongated in the vertical direction Z formed on the support plate 39 of the guide member 32. It is supposed to be screwed on.

  Further, as shown in FIG. 5, the carriage 24 has a connecting portion 70 that protrudes on the back side (left side in FIG. 5). A first guide groove 71 into which the first rail 37 is inserted is formed at the lower end of the connecting portion 70, and a second guide groove 72 into which the second rail 38 is inserted is formed at the upper end of the connecting portion 70. It is done. In a state where the first rail 37 is inserted into the first guide groove 71 and the second rail 38 is inserted into the second guide groove 72, the carriage 24 has both sides in the vertical direction Z with respect to the rails 37 and 38 (vertical direction Relative displacement to) is possible.

  As shown in FIG. 5, in the connecting portion 70 of the carriage 24, a part of one of the two timing belts 41 extending in parallel in a state of being hung on the pulley 42 is gripped by the gripping piece 73. It is connected in the state. The recording apparatus 11 further includes a linear encoder 80 having a tape-like code plate (not shown) extending along the scanning direction X on the back surface of the connecting portion 70 of the carriage 24. A sensor 81 is provided which constitutes a linear encoder 80 for detecting a tape-like code plate. The sensor 81 has a light emitting unit and a light receiving unit (not shown) at both sides sandwiching the code plate, and emits light transmitted through a plurality of light transmitting units provided at a constant pitch in the longitudinal direction (scanning direction X) of the code plate. When the light receiving unit intermittently receives the light from the unit, the detection signal including the number of pulses proportional to the movement distance of the carriage 24 is output. The control unit 100 controls the carriage motor 40 (FIG. 3) based on the detection signal input from the sensor 81, and performs speed control and position control when the carriage 24 moves in the scanning direction X. Further, below the main frame 31, a support member 82 for supporting a driven roller (not shown) constituting the transport roller pair 45 is disposed so as to be able to swing around a support shaft. A spring 83 (for example, a coil spring) for biasing the driven roller downward is hooked between the frame portion 36 and the support member 82 on the back surface portion of the main frame 31.

  As shown in FIG. 6, the plate spring 62 is fastened by the screw 63 in a state where the pair of biasing pieces 62A located at both ends in the longitudinal direction is pressed against the surface (fourth surface 39B) of the support plate 39 It is done. Assuming that the surface in contact with the surface of the support plate 39 is a bottom surface, the plate spring 62 has a pair of protrusions 62B at both ends in the longitudinal direction of the bottom, and a pair of protrusions in the pair of positioning holes 36C of the frame 36 It is positioned in the state which inserts the part 62B. The screw 63 is inserted into the support plate portion 39 of the guide member 32 and fastened to the female screw portion 66 of the main frame 31. In a state in which the screw 63 is tightened and in a state in which the screw 63 is slightly loosened at the time of adjustment, the biasing piece 62A of the plate spring 62 is elastically deformed into a curved shape than the shape in the natural state. 62A presses the guide member 32 against the main frame 31 by its elastic reaction force. Therefore, even if the screws 52, 63, 64 are loosened, the first surface 36A and the second surface 39A are kept in contact with each other by the biasing force of the plate spring 62, and the first surface 36A and the second surface 39A The guide member 32 is easily prevented from being inclined with respect to the main frame 31 due to the formation of a gap between them.

  As shown in FIG. 8, the cam member 51 constituting the adjustment mechanism 50 has an eccentric shaft portion 53 functioning as an eccentric cam with which the rotation center C 1 is eccentric, and a fan shape extending radially from the eccentric shaft portion 53. And a plate portion 54. The cam member 51 is rotatably supported about the rotation center C1 of the eccentric shaft 53 by the eccentric shaft 53 being supported by the frame 36 via the opening 84 of the support plate 39. There is. As shown in FIG. 7, the eccentric shaft 53 has a shaft 56 at its rear end, and the shaft 56 is inserted into an insertion hole 85 (see FIG. 7) formed in the frame 36. ing.

  The cam member 51 has a first sliding surface 54 A forming the outer peripheral surface of the fan-shaped plate portion 54 and a second sliding surface 53 A (cam surface) forming the outer peripheral surface of the eccentric shaft portion 53. The first sliding surface 54A and the second sliding surface 53A are both arc surfaces. The second radius of curvature of the second sliding surface 53A is smaller than the first radius of curvature of the first sliding surface 54A. The rotation center C1 of the cam member 51 is eccentric from the center C2 of the second virtual circle formed by the second sliding surface 53A.

  As shown in FIG. 8, in the fan-shaped plate portion 54 of the cam member 51, the outer side of the second virtual circle formed by the second sliding surface 53 A (cam surface) of the eccentric shaft portion 53 and the first of the fan-shaped plate portion 54. At a position inside the first virtual circle formed by the sliding surface 54A, a guide hole 54B formed of an arc-shaped elongated hole as an example of a first opening along the first sliding surface 54A is provided. In the guide hole 54B, the distance from the rotation center C1 of the eccentric shaft 53 is constant regardless of the position on the arc. The screw 52 is a female screw portion provided in the frame portion 36 of the main frame 31 in a state of being inserted into a long hole 39C extending in the vertical direction Z formed in the support plate portion 39 of the guide member 32 through the guide hole 54B. The main frame 31 and the guide member 32 are fastened by being screwed to each other at 65 (see FIG. 7). The screw 52 has both the function of fixing the cam member 51 in the adjusted rotational position and the function of fastening the main frame 31 and the guide member 32.

  When the screws 52 and the screws 63 and 64 (see FIG. 4) are loosened, the cam member 51 can be rotated within the range of the guide holes 54B through which the screws 52 are inserted. By rotating the cam member 51, the contact position between the first sliding surface 54A of the fan-shaped plate portion 54 and the first convex portion 67, the second sliding surface 53A of the eccentric shaft portion 53, and the second convex portion By changing the distance from the contact position to the contact position 68, the position adjustment of the guide member 32 relative to the main frame 31 in the vertical direction Z is possible.

  Specifically, in a state where the first surface 36A of the main frame 31 and the second surface 39A of the guide member 32 are in contact with each other, the first sliding surface 54A of the cam member 51 can slide with the first convex portion 67 And, the second sliding surface 53A of the cam member 51 can slide with the second convex portion 68. The distance D shown in FIG. 8 between the contact position of the first projection 67 with which the first sliding surface 54A contacts and the contact position of the second projection 68 with which the second sliding surface 53A contacts is It changes when the cam member 51 rotates. For example, the first position P1 of the first sliding surface 54A in FIG. 8 is in contact with the first convex portion 67, and the first position Q1 of the second sliding surface 53A is the second convex portion 68. When the second position P2 of the first sliding surface 54A abuts on the first projection 67 and the second position Q2 of the second sliding surface 53A abuts on the second projection 68 And they are different. In FIGS. 8 and 9, the first positions P1 and Q1 and the second positions P2 and Q2 indicate the positions of an example, and the first position P1 and the second position P2 correspond to the first sliding surface 54A. The distance D is different if it is any different position on the top.

  A scale 54C is formed along the outer periphery of the peripheral edge of the fan-shaped plate 54. Extend a fan-shaped plate portion 54 having a second radius longer than the first radius of the eccentric shaft portion 53 radially outward of the eccentric shaft portion 53, and attach a scale 54C along the outer peripheral edge of the fan plate portion 54. Thus, the resolution of the scale 54C is increased. In the example shown in FIG. 8, the second radius is about four times the first radius, but a range of two to five times is preferable. Further, in the example shown in FIG. 8, the center of the pivoting width of the fan-shaped plate portion 54 is at the neutral position. The first sliding surface 54A contacts the first convex portion 67 at a position corresponding to the central position of the pivoting width of the fan-shaped plate portion 54. The state of the pivot angle shown in FIG. A scale 54C is attached at a constant interval on the minus side and the plus side with respect to the neutral position as a reference (for example, "zero"). In addition, that the resolution of the scale 54C mentioned here is high means that the displacement amount of the guide member 32 per scale (unit rotation amount) is small.

  In recent years, the gap G can be adjusted by measuring the gap G between the recording head 25 and the support 26 with the sensor of the measuring instrument and adjusting the adjustment mechanism 50 while observing the measurement value of the measuring instrument. In accordance with such a measurement method, a stepless adjustment method in which the first sliding surface 54A is an arc surface is adopted so that the gap G can be adjusted while canceling dimensional variations and assembly variations of parts. Since it is a stepless adjustment method, the first sliding surface 54A of the cam member 51 is an arc surface without a notch necessary in the configuration of the multistep adjustment method.

  As shown in FIGS. 5 and 8, the main frame 31 protrudes in a direction (conveying direction Y) in which the normal extends from a first surface 36A having a normal extending in a direction parallel to the conveying direction Y. A convex portion 67 is provided. In addition, the guide member 32 is a second convex portion that protrudes in the normal direction (conveyance direction Y) from the second surface 39A disposed to face the first surface 36A and the fourth surface 39B that is the opposite surface. And 68. The cam member 51 is interposed between the first convex portion 67 and the second convex portion 68 in a state of being in contact with each other.

  As shown in FIG. 8, the fan-shaped plate portion 54 that constitutes the cam member 51 is in contact with the first convex portion 67 at the first sliding surface 54A. Further, the eccentric shaft portion 53 constituting the cam member 51 is in contact with the second convex portion 68 at the second sliding surface 53A. The relative position of the guide member 32 relative to the main frame 31 in the vertical direction Z is a cam member interposed between the first convex portion 67 of the main frame 31 and the second convex portion 68 of the guide member 32 It is determined according to the rotational position of 51. That is, the cam member 51 rotates eccentrically, and the first convex portion 67 that contacts the first sliding surface 54A of the fan-shaped plate 54 and the second sliding surface 53A (cam surface) of the eccentric shaft 53 The relative position of the guide member 32 in the vertical direction Z with respect to the main frame 31 is adjusted by changing the distance between the second convex portion 68 in contact therewith.

  As shown in FIG. 8, the cam member 51 is disposed on the side (front side) of the main frame 31 and the guide member 32 facing the scanning path of the carriage 24 (see FIG. 2). An insertion hole 55 is provided on an end surface (first end surface) on the front side as an example of an engaged portion (first engaged portion) capable of engaging with the tool at the rotation center C1. In more detail, the insertion hole 55 for the tool is provided on the first end face of one (surface side) of the eccentric shaft 53 so as to have a center at a position coinciding with the rotation center C1. In the example shown in FIG. 8, it is a cross-shaped insertion hole 55 into which a plus driver as an example of a tool can be inserted. The insertion hole 55 is in the form of a hole into which a flathead screwdriver can be inserted.

  Further, as shown in FIG. 7, in the frame portion 36 of the main frame 31, the above-described insertion hole 85 as an example of the second opening through which the shaft portion 56 of the eccentric shaft portion 53 is inserted is formed. A restricting convex portion 56A extends outward in the radial direction from the shaft portion 56. The insertion hole 85 has a circular hole portion 85A having a diameter slightly larger than the outer peripheral diameter (diameter) of the portion other than the restriction convex portion 56A of the shaft portion 56 and the restriction convex portion 56A radially outward from the circular hole portion 85A And a rectangular restricting hole 85B extending in a possible size.

  When the cam member 51 is assembled to the frame portion 36, the shaft portion 56 of the eccentric shaft portion 53 is pushed into the insertion hole 85 after the cam member 51 is in a posture in which the restriction convex portion 56A and the restriction hole 85B are opposed to each other. Insert it. The cam member 51 is used within a rotation range in which the restriction convex portion 56A does not face the restriction hole 85B. Therefore, in the rotation range of about 90 degrees centered on the neutral position shown in FIG. 8 where the cam member 51 is used, the control convex portion 56A does not face the control hole portion 85B, and the control convex portion 56A is It functions as a retainer for the cam member 51 with respect to the main frame 31.

  As shown in FIG. 7, the cam member 51 can be engaged with the tool at the rotation center C1 at the second end face opposite to the first end face where the first insertion hole 55 is formed in the eccentric shaft 53 A second insertion hole 57 is provided as an example of the second engaged portion. The second insertion hole 57 has a center that coincides with the rotation center C 1 at a position immediately behind the first insertion hole 55 in the eccentric shaft 53. In the present example, the first insertion holes 55 and the second insertion holes 57 correspond to different tools and have different hole shapes. Specifically, the first insertion hole 55 is an insertion hole for a driver, whereas the second insertion hole 57 is an insertion hole for a polygonal wrench (for example, for a hexagonal wrench). In addition, at least one of the first engaged portion and the second engaged portion is not limited to the hole such as the insertion hole, and may be a convex portion as long as it can be engaged with the tool.

  Further, as shown in FIG. 7, the aforementioned spring 61 which biases the guide member 32 in the direction of gravity with respect to the main frame 31 adjusts the position of the guide member 32 downward with respect to the main frame 31 by the adjustment mechanism 50. In this case, the lowering of the guide member 32 by its own weight is assisted. The spring 61 in this example is, for example, a torsion coil spring. In the spring 61, the coil portion 61A is fixed to a convex portion 36D projecting to the back surface of the main frame 31, and one of the two wire members 61B and 61C extending from the coil portion 61A is a convex portion 36E of the main frame 31. The other wire 61C is locked to the projection 39D which protrudes from the guide member 32 through the opening 86 of the main frame 31 to the back surface side. That is, the two wire members 61B and 61C of the spring 61 formed of a torsion coil spring extend from the main frame 31 in the direction opposite to the normal to the first surface 36A (see FIG. 6), and the guide member 32. And the second surface 39A (see FIG. 6) is locked to the projection 39D extending in the direction in which the normal of the second surface 39A (see FIG. 6) extends, and urges both the projections 36E and 39D in the direction of pushing the vertical direction Z. Thus, the spring 61 of the present example biases the guide member 32 in the direction of gravity at the position on the back side of the main frame 31 by urging the protrusion 39D located below the protrusion 36E in the direction of gravity. Energize.

  Further, as a position of the cam member 51, a retracted position shown in FIG. 9 is provided which can separate the cam member 51 and the guide member 32 in a non-contact state after adjustment. Therefore, as shown in FIG. 9, when the cam mechanism 51 is disposed at the rotation limit position on the minus side (lower side) of the adjustment mechanism 50, one side surface of the sector plate portion 54 abuts and the cam member 51 Is held at the rotation limit position. Then, the cam member 51 is in the retracted position shown in FIG. 9 by fastening the screw 52 in a state where one side surface of the fan-shaped plate portion 54 abuts against the convex portion 69 at the rotation limit position of the cam member 51 on the minus side. It is held. Note that the operation of rotating the cam member 51 to the retracted position shown in FIG. 9 and the fastening of the cam member 51 at the rotation limit position have finished the position adjustment of the guide member 32 in the vertical direction Z by the operation of the cam member 51. After that, at least after temporarily fixing the screw 63 of the plate spring 62 is performed.

  Next, the operation of the recording device 11 will be described. At the time of process inspection before shipment or at the time of maintenance after shipment, etc., the operator operates the adjustment mechanism 50 of the recording device 11 to adjust the gap. For example, it is assumed that the cam member 51 is disposed in the neutral position (FIG. 8) or the retracted position (FIG. 9). The operator moves the carriage 24 to a predetermined position preferred for the measurement of the gap G by manual control or control directed to the control unit 100. The operator measures the gap G between the support 26 and the recording head 25 with the sensor of the measuring instrument. As a result of measurement, when it is necessary to adjust the gap G, next, with the front cover of the recording device 11 opened, the operator loosens the screws 52, 63, 64. At this time, since the leaf spring 62 presses the guide member 32 against the main frame 31, the guide member 32 is not inclined so much with respect to the main frame 31 and held substantially parallel even if the screws 52, 63, 64 are loosened. Be done. In this state, the guide member 32 can move relative to the main frame 31 in the vertical direction Z by operating the adjustment mechanism 50.

  Next, the gap G is adjusted by rotating the pair of cam members 51. At this time, the operator measures the gap G between the support 26 and the recording head 25 with the sensor of the measuring instrument, and rotates the pair of cam members 51 while observing the measured value to obtain the target gap G The height and inclination of the guide member 32 are adjusted. For example, the carriage 24 is disposed near the central position of the printing area PA (near the paper feed center position), and the gap G between the recording head 25 and the support 26 is measured. In this position, since the pair of cam members 51 can be seen on both sides in the scanning direction X of the carriage 24, the operator can perform adjustment work while looking at the cam members 51 from the front.

  When it is desired to adjust the gap G at a position where the carriage 24 is slightly shifted to the left and right from the center position of the printing area PA, the cam member 51 may be hidden behind the carriage 24. In this case, when the worker removes the cover on the back side of the housing 12, as shown in FIG. 7, the second insertion hole 57 for the hexagonal wrench is exposed on the back side of the main frame 31. For this reason, the operator can turn the cam member 51 by inserting the hexagonal wrench into the second insertion hole 57 and turning it. As described above, even in the state where the carriage 24 is disposed at the position that hides the cam member 51, the gap G can be adjusted by operating the eccentric shaft 53 from the back surface side. In addition, there is also a possibility that the worker does not have a plurality of tools at the time of maintenance. For example, when the operator holds only the driver, the gap adjustment can be performed by inserting the driver into the first insertion hole 55 and rotating the cam member 51. When the operator holds only a hexagonal wrench, for example, the hexagonal wrench can be inserted into the second insertion hole 57 to turn the cam member 51 for gap adjustment.

  When the scale 54C at the contact point between the first sliding surface 54A of the fan-shaped plate portion 54 and the first convex portion 67 of the cam member 51 is on the plus side, the guide member 32 is relatively raised and the gap G is On the contrary, when the scale 54C at the contact point is on the minus side, the guide member 32 is relatively lowered to reduce the gap G. When the operator rotates the cam member 51 in the positive direction (first direction) which is the clockwise direction in FIG. 8, the eccentric shaft portion 53 pushes up the second convex portion 68. Relative to the vertical direction Z. On the other hand, when the worker rotates the cam member 51 in the negative direction (second direction) which is the counterclockwise direction in FIG. 8, the second sliding surface 53A of the eccentric shaft 53 separates from the second projection 68 To At this time, the support plate portion 39 of the guide member 32 is kept substantially in parallel with the frame portion 36 without being inclined with respect to the frame portion 36 by the biasing force of the plate spring 62. In addition, the biasing force in the direction of gravity is exerted by the spring 61. Therefore, as the second sliding surface 53A is displaced downward away from the second convex portion 68, the guide member 32 maintains the state in which the second convex portion 68 and the second sliding surface 53A abut. While being displaced downward. Therefore, the position of the guide member 32 corresponding to the adjustment mechanism 50 can be positionally adjusted to an appropriate height according to the rotation angle of the cam member 51. The measurement of the gap G between the recording head 25 and the support 26 may be performed using a thin plate-like gauge instead of the measuring device equipped with a sensor.

  The operator rotates the pair of cam members 51 to adjust the uniform gap G by adjusting the inclination and height of the guide member 32 and then adjusts the screws 63 of the plate spring 62 for temporary locking To conclude. As a result, the guide member 32 is temporarily fixed to the main frame 31 at the adjusted position.

  Next, the operator rotates the cam member 51 to the rotation limit position on the minus side and places the cam member 51 in the retracted position using a driver or a hexagonal wrench. In the retracted position, the side surface of the fan-shaped plate portion 54 abuts on the convex portion 69, and the cam member 51 is held at the negative rotation limit position. Next, the screw 52 is tightened to fix the cam member 51 at the retracted position. In this way, when the screws 52 are tightened for all adjustment mechanisms 50 and fixed in the retracted position, the remaining screws 64 are tightened. As a result, the guide member 32 is fixed to the adjustment position by fastening the plurality of screws 52, 63, 64 to the main frame 31.

  As shown in FIG. 9, since the cam member 51 is at the retracted position, the eccentric shaft 53 and the guide member 32 are separated, and the cam member 51 and the guide member 32 are not in contact with each other. Therefore, for example, the cam member 51 is moved by the guide member 32 by vibration or drop impact when the recording apparatus 11 is transported afterward, or thermal expansion of the main frame 31, the guide member 32, and the cam member 51 under high temperature environment. It is avoided to push up. In addition, it is possible to prevent the guide member 32 from being lowered by thermal deformation (creep deformation or the like) of the cam member 51 in a high temperature environment. Therefore, it is possible to prevent the fluctuation of the gap G caused by this kind of vibration, drop impact, high temperature environment and the like.

  The adjustment mechanism 50 can be miniaturized with the configuration in which the distance between the pair of adjustment mechanisms 50 in the scanning direction X is a second distance longer than the first distance than the first distance. In the present embodiment, when the carriage 24 is arranged at the center position of the printing area PA, the second interval (the interval equal to or larger than the width dimension of the carriage 24) of the pair of cam members 51 can be seen on both sides in the scanning direction X of the carriage 24 It is placed at a separated position. Further, in the present embodiment, although the center feeding is performed, for example, positions on both sides in the scanning direction X with respect to the area where the medium M of the minimum size (for example, business card size) assumed to be used is transported It is placed at the remote position). Furthermore, in the scanning direction X, a pair of adjustment mechanisms 50 are positions on both sides sandwiching a plurality of temporary fixing points (for example, two places) in which a plurality of leaf springs 62 are fastened by screws 63 (positions separated by a second distance) It has been arranged. As described above, in the recording apparatus 11 of the present embodiment, since the pair of adjustment mechanisms 50 are arranged at the second interval in the scanning direction X, it is allowed to relatively reduce the resolution of adjustment. Therefore, for example, the radial length of the fan-shaped plate portion 54 can be relatively shortened, and the downsizing of the adjustment mechanism 50 can be realized.

According to the first embodiment described above, the following effects can be obtained.
(1) The recording apparatus 11 includes a carriage 24 having a recording head 25, a guide member 32 for guiding the carriage 24 so as to be movable in the scanning direction X, and a main frame for supporting the guide member 32 so as to be relatively movable in the vertical direction Z And 31. Furthermore, the recording apparatus 11 has a cam member 51 for adjusting the relative position of the guide member 32 in the vertical direction Z with respect to the main frame 31, and a plurality of adjustment mechanisms 50 arranged at different positions in the scanning direction X; And a spring 61 (an example of a biasing member) for biasing the guide member 32 in the direction of gravity. Therefore, when the cam member 51 is operated in the direction to lower the guide member 32 after loosening the fixation (screws 52, 63, 64) of the guide member 32 to the main frame 31, the guide member 32 has a slight resistance load. However, due to the biasing force in the direction of gravity received from the spring 61, the cam member 51 follows the pivoting of the cam member 51 and descends almost certainly. Therefore, extra work such as pushing down the guide member 32 with the use of a jig or the like is not necessary, so the adjustment work of adjusting the relative position of the guide member 32 in the vertical direction Z with respect to the main frame 31 is simply and accurately performed. be able to.

  (2) The recording device 11 is a member extending in the scanning direction X of the carriage 24 and has a first surface having a normal line extending in a direction parallel to the conveyance direction Y of the medium M to be recorded by the recording head 25 A main frame 31 is provided with 36A and a first convex portion 67 extending in the direction in which the normal extends. The recording device 11 is a member extending in the scanning direction X of the carriage 24. The recording device 11 extends in the direction in which the normals of the second surface 39A disposed opposite to the first surface 36A and the first surface 36A extend. A guide member 32 having two convex portions 68 and movably guiding the carriage 24 in the scanning direction X is provided. The recording apparatus 11 further includes an adjustment mechanism 50 including a cam member 51 having a first sliding surface 54A and a second sliding surface 53A. In the state where the first surface 36A of the main 31 frame and the second surface 39A of the guide member 32 are in contact with each other, the adjustment mechanism 50 can slide the first sliding surface 54A with the first projection 67, and The second sliding surface 53A can slide on the second projection 68. Further, the distance between the contact position of the first convex portion 67 with which the first sliding surface 54A contacts and the contact position of the second convex portion 68 with which the second sliding surface 53A contacts is the first slide. When the first position of the moving surface 54A abuts on the first convex portion 67 and the first position of the second sliding surface 53A abuts on the second convex portion 68, and the second of the first sliding surface 54A This is different from the case where the position abuts on the first convex portion 67 and the second position of the second sliding surface 53A abuts on the second convex portion 68. Therefore, the cam member 51 is rotated in a state where the fixing of the guide member 32 to the main frame 31 is loosened, and the contact position of the first convex portion 67 with which the first sliding surface 54A contacts, and the second sliding surface The relative position of the guide member 32 in the vertical direction Z with respect to the main frame 31 is adjusted by changing the distance D between the contact point of the second convex portion 68 with which the contact 53A contacts. At this time, the load applied to the cam member 51 is the contact point of the first sliding surface 54A in contact with the eccentric shaft 53 (for example, the shaft 56) of the cam member 51 and the first protrusion 67, and the second protrusion Because the cam member 51 is dispersed at the contact position of the second sliding surface 53A that contacts the contact 68, the cam member 51 can be prevented from intensively receiving a load at a specific portion (for example, the shaft portion 56).

  (3) The recording device 11 includes a plate spring 62 (an example of a second biasing member) that presses the guide member 32 in the direction (pressing direction) intersecting the scanning direction X and the vertical direction Z with respect to the main frame 31. ing. Therefore, since the guide member 32 is pressed against the main frame 31 in the direction of bringing the first surface 36A and the second surface 39A into contact with each other by the biasing force of the plate spring 62, the guide member 32 is fixed (screw 52 , 63, 64), it is difficult to form a gap between the guide member 32 and the main frame 31, and the guide member 32 does not easily tilt relative to the main frame 31. For this reason, resistance load such as the guide member 32 being hooked on the main frame 31 can be reduced, and extra work such as pushing the guide member 32 with a jig can be further reduced. In addition, in the case where the guide member 32 is fixed from the posture in which it is inclined with respect to the main frame 31 after adjustment, there is a concern that the adjustment position of the guide member 32 may shift in the vertical direction Z in the process of changing to the posture in which the inclination is eliminated. On the other hand, in this example, the gap between the first surface 36A and the second surface 39A is suppressed small by the biasing force of the plate spring 62, and the inclination of the guide member 32 is suppressed small. The adjustment position of the guide member 32 does not easily shift in the vertical direction Z before and after the work of fixing 32 to the main frame 31. Therefore, the accuracy of the adjustment position when the guide member 32 is finally fixed to the main frame 31 can be enhanced. Therefore, the adjustment operation of adjusting the fixed position of the guide member 32 with respect to the main frame 31 to adjust the height position of the recording head 25 can be performed easily and accurately.

  (4) The cam member 51 has the first sliding surface 54A and the second sliding surface 53A, and the second radius of curvature of the second sliding surface 53A is greater than the first radius of curvature of the first sliding surface 54A. The rotation center C1 of the cam member 51 is eccentric from the center C2 of the second virtual circle formed by the second sliding surface 53A. Therefore, when the cam member 51 is rotated to adjust the position of the guide member 32 in the vertical direction Z, fine adjustment is easily performed.

  (5) The cam member 51 is a guide along the first sliding surface 54A outside the second virtual circle formed by the second sliding surface 53A and inside the first virtual circle formed by the first sliding surface 54A. The adjusting mechanism 50 has a hole 54B (an example of a first opening), and the adjusting mechanism 50 includes a screw 52 (an example of a fastening member) for fastening the main frame 31 and the guide member 32 through the guide hole 54B. Therefore, one screw 52 has both the function of fixing the cam member 51 in the adjustment position and the function of fastening and fixing the main frame 31 and the guide member 32. The number of fixing points for fixing the main frame 31 and the guide member 32 by the other fastening members (screws 63 and 64) is relatively reduced, and the adjustment operation is relatively easy. Moreover, since the cam member 51 can be fixed at the position outside the second virtual circle, the cam member 51 is fixed firmly in the rotational position after adjustment, as compared with the configuration in which the cam member is fixed at the position inside the second virtual circle. can do.

  (6) The cam member 51 is disposed on the side (front side) of the main frame 31 and the guide member 32 facing the scanning path of the carriage 24, and is eccentrically supported by the main frame 31. A first insertion hole 55 (an example of an engaged portion) which can be engaged with a tool at the rotation center C1 is provided on the front end surface (first end surface) of the eccentric shaft portion 53. ing. Therefore, if the operator opens the cover of the case 12 of the recording device 11 to make the carriage 24 visible, the adjustment mechanism 50 is positioned in front of the guide member 32 to which the carriage 24 is guided. The adjustment mechanism 50 can be accessed to perform adjustment work. In addition, if a tool (such as a driver) is engaged with the first insertion hole 55 provided on the end face of the eccentric shaft portion 53 of the cam member 51, the cam member 51 can be turned easily and finely adjustable using the tool. It can be done. Therefore, position adjustment of the guide member 32 and gap adjustment accompanying this can be performed easily and correctly.

  (7) The cam member 51 is a second insertion face that can be engaged with the tool at the rotation center C1 at the second end face opposite to the first end face where the first insertion hole 55 is provided in the eccentric shaft 53 It has a hole 57 (an example of a second engaged portion). Therefore, if the operator opens the cover on the rear side of the housing 12 of the recording apparatus 11, for example, a tool (hexagon wrench) may be inserted from the rear side of the main frame 31 to the second insertion hole 57 in the second end face of the eccentric shaft 53. When engaged, the tool can be used to rotate the cam member 51 easily and finely adjustable. For example, even if the height of the guide member 32 is to be adjusted by disposing the carriage 24 at the position where the adjustment mechanism 50 is hidden, the tool is engaged with the second insertion hole 57 on the back side to rotate the cam member 51. Can.

  (8) The first insertion hole 55 and the second insertion hole 57 have different shapes. Therefore, even if the user can not engage the tool that can be engaged with one of the first insertion hole 55 and the second insertion hole 57, the tool can be used as long as the tool that can be engaged with the other is held. The cam member 51 can be rotated by using it.

  (9) One of the first insertion hole 55 and the second insertion hole 57 has a shape engageable with a driver, and the other has a shape engageable with a polygonal wrench. Therefore, if at least one of the driver and the polygonal wrench is possessed, the cam member 51 can be easily rotated using the one tool. That is, if there is a general-purpose tool, the cam member 51 can be easily rotated.

  (10) The cam member 51 has an eccentric shaft portion 53 including the shaft portion 56 rotatably supported by the main frame 31. The main frame 31 has an insertion hole through which the shaft portion 56 of the cam member 51 can be inserted. It has 85 (an example of 2nd opening). The shaft portion 56 of the cam member 51 has a locking projection 56A for retaining that protrudes outward in the radial direction of the shaft portion 56. In addition, the insertion hole 85 is a circular hole 85A through which the portion of the shaft 56 other than the restriction protrusion 56A can be inserted, and a restriction hole 85B extending radially outward from the circular hole 85A such that the restriction protrusion 56A can be inserted. And. The cam member 51 is rotatably provided in a range in which the restriction convex portion 56A and the restriction hole 85B do not face each other. Therefore, when the cam member 51 is in a rotational posture in which the control projection 56A and the control hole 85B are opposed to each other, the shaft 56 is inserted into the insertion hole 85 while inserting the control convex 56A and the control hole 85B. The cam member 51 can be assembled to the main frame 31. Further, after the assembly, since the control projection 56A and the control hole 85B do not face each other in the rotation range of the cam member 51 during adjustment, the cam member 51 is rotated in a state of being prevented from coming off the main frame 31 during adjustment. It can be done.

  (11) A pair of adjustment mechanisms 50 are located at an interval of a width dimension CW or more in the scanning direction X of the carriage 24 and set at one end of the scanning path of the carriage 24 among the pair of adjustment mechanisms 50 One of the positions HP (an example of the standby position) side is disposed at a position inside the scanning direction X than the carriage 24 at the home position HP. Therefore, even when the carriage 24 is disposed near the center of the print area PA and at the home position HP, the operator can perform gap adjustment while looking at the adjustment mechanism 50 not hidden by the carriage 24. . In particular, when the pair of adjustment mechanisms 50 is disposed at a position located inside the scanning direction X with respect to the carriage 24 positioned at both ends (home position HP and anti-home position) in the scanning path, the home position Also when positioned at the end opposite to the HP, the operator can adjust the gap while looking at the pair of adjustment mechanisms 50 more frequently.

  (12) The amount of displacement of the guide member 32 in the vertical direction Z necessary for the unit amount of rotation of the cam member 51 is longer than the case where the distance between the pair of adjustment mechanisms 50 is the first distance. The interval is smaller. In the present embodiment, since the distance between the pair of adjustment mechanisms 50 is a value (second distance) equal to or greater than the width of the carriage 24, the turning radius from the turning center C1 of the cam member 51 to the first sliding surface 54A Can be made relatively smaller than the configuration at the first interval, and the adjusting mechanism 50 can be made relatively smaller.

  (13) The adjusting mechanism 50 has the convex portion 69 (an example of the holding portion) which holds the cam member 51 at the rotation limit position in the direction of displacing the guide member 32 in the direction of gravity. For example, after the cam member 51 is operated to adjust the position of the guide member 32 in the vertical direction Z, the guide member 32 is temporarily fixed by the other fastening members (screws 63 and 64) other than the adjustment mechanism 50. Thereafter, the cam member 51 is operated to the rotational limit position in the direction in which the guide member 32 is displaced in the direction of gravity, and the screw 52 is fastened at the rotational limit position against the convex portion 69 to guide the cam member 51. It can be held apart from the member 32. Therefore, the cam member 51, the guide member 32, the main frame 31 and the like due to the vibration when transporting the recording apparatus 11, the drop impact, the change of the environmental temperature and the heat of the heat source (for example, electronic parts and heaters for drying the medium). It is possible to prevent the fixing position of the guide member 32 from being shifted with respect to the main frame 31 due to thermal expansion and deformation of the cam member (for example, creep deformation).

  (14) Since the cam member 51 has no notch and the guide member 32 can be adjusted steplessly, the dimensional variation and assembly variation of the parts are canceled and the support base is almost the same as the design center. The gap G between the recording head 26 and the recording head 25 can be adjusted. For example, in the case of a multi-step adjustment method using a cam member having a notch, there is a risk that the design center and the notch position may be shifted, so to reduce the adjustment value (adjustment resolution) for one notch of the notch. It is necessary to increase the dynamic radius. Therefore, since the first sliding surface 54A is a circular arc surface without a notch, and the gap G can be continuously adjusted, the step radius adjustment method of the cam member 51 is relatively reduced, and the cam member 51 is miniaturized. Can be

Second Embodiment
Next, the recording device 11 of the second embodiment will be described with reference to the drawings. In the second embodiment, the configurations of the biasing member (first biasing member) and the second biasing member are different. In the present embodiment, the first biasing member also serves as the function of the second biasing member. That is, the spring 90 having the first biasing member and the second biasing member is provided, and the spring 90 biases the guide member 32 with respect to the main frame 31 in the gravity direction and the pressing direction. Thus, the plate spring 62 used as the second biasing member in the first embodiment is eliminated.

  As shown in FIGS. 10 to 12, the recording apparatus 11 of this embodiment is replaced with the spring 61 formed of a torsion coil spring shown in FIG. 7 etc. adopted in the first embodiment as an example of the first biasing member. A spring 90 is provided which is a coiled spring that biases the guide member 32 in the direction of gravity. As shown in FIGS. 11 and 12, the spring 90 is stretched between the guide member 32 and the main frame 31 in a diagonal posture in which both are pulled on the back surface side of the main frame 31. That is, the spring 90 is stretched in an oblique posture having a component of tensile force in two directions of a gravity direction and a pressing direction which is a direction opposite to the conveyance direction Y. The spring 90 is hooked on a convex portion 39E whose both ends project from the support plate portion 39 of the guide member 32 and a convex portion 36F which protrudes from the frame portion 36 of the main frame 31, It is biased in two directions with the pressing direction. That is, the spring 90 shown in FIGS. 11 and 12 urges the guide member 32 in the direction of gravity and also urges the second surface 39A against the first surface 36A. Thus, in addition to the function of the first biasing member that biases the guide member 32 in the direction of gravity, the spring 90 biases the second surface 39A of the guide member 32 against the first surface 36A of the main frame 31. It also doubles as the function of the second biasing member. Therefore, in the example shown in FIG. 10, the leaf spring 62 provided as an example of the second biasing member in the first embodiment is eliminated. Although the leaf spring 62 may be used together with the spring 90 shown in FIG. 11, it is preferable to reduce the number of the leaf springs 62 as compared with the example shown in FIG.

Third Embodiment
Next, a recording apparatus 11 according to a third embodiment will be described with reference to the drawings. The third embodiment is an example in which the fastening position of a screw for fixing the guide member 32 to the main frame 31 is changed in the second embodiment. Specifically, the fastening position of the screw is limited to the range near both ends in the longitudinal direction of the guide member 32, and the fastening screw is eliminated in the range near the longitudinal center. Therefore, in this embodiment, not only the fastening position of the screw 64 is changed, but also the spring 90 having the functions of the biasing member (first biasing member) and the second biasing member as in the second embodiment. By using it, the plate spring 62 in the first embodiment is eliminated, and the screw 63 for the plate spring 62 is eliminated. Further, the screw 52 is not fixed to the main frame 31 by changing the configuration of the adjusting mechanism 50. The other configuration is the same as in the first and second embodiments, so the same reference numerals are given and the description thereof is omitted.

  By the way, since the main frame 31 and the guide member 32 are long members, it is inevitable that the surface is somewhat curved along the longitudinal direction. The displacement amount in the thickness direction at the central portion in the longitudinal direction of the main frame 31 and the guide member 32 due to the curvature of the surface is relatively larger than that at the end. Therefore, when the screw 64 is fastened at the central portion in the longitudinal direction of the guide member 32 to forcibly press the guide member 32 against the main frame 31, the curved surfaces of each other are forced to be in pressure contact. 31 and the guide member 32 generate relatively large distortion. Due to this distortion, the position of the guide member 32 after height adjustment by the adjustment mechanism 50 may fluctuate in the vertical direction Z. Therefore, in the present embodiment, as shown in FIG. 13, the screw 64 as an example of the fixing member to be fastened to fix the guide member 32 to the main frame 31 is closer to both ends avoiding the central portion in the scanning direction X Fasten in position.

  As shown in FIG. 13, in the central portion in the longitudinal direction of the main frame 31 and the guide member 32, the screws 64 are eliminated, and the screws 64 are arranged at positions near both ends in the scanning direction X. In the present embodiment, as shown in FIG. 13, the plurality of screws 64 are disposed at a position closer to the end portion outside the cam member 51 in the scanning direction X of the guide member 32 and different in the vertical direction Z 2 It is fastened in position. On the first surface 36A of the main frame 31 and the second surface 39A of the guide member 32, there is formed a pedestal (not shown) in which a portion to which the screw 64 is fastened is bulged in a trapezoidal shape by a small amount. By fastening the screw 64, the first surface 36A and the second surface 39A are pressure-welded at the pedestal portion. As shown in FIG. 13, the guide members 32 are provided at a plurality of locations (two locations in the example of FIG. 13) in the scanning direction X, with the projections 36H projecting from the main frame 31 in the holes 39G opened in the guide members 32. By inserting the guide member 32, even if all the screws 64 are removed, the guide member 32 is prevented from falling off.

  Further, as shown in FIG. 13, a spring 90 hung on the back side of the main frame 31 is stretched at a position on the outer side (end side) of the two adjustment mechanisms 50 in the scanning direction X. Similar to the second embodiment, the two springs 90 have a function of pressing the second surface 39A of the guide member 32 against the first surface 36A of the main frame 31 in addition to the function of biasing the guide member 32 in the direction of gravity. . For this reason, in the recording apparatus 11 shown in FIG. 13, the leaf spring 62 and the screw 63 (see FIG. 4) in the first embodiment are eliminated as in the second embodiment. For this reason, as shown in FIG. 13, the screw 63 is also not fastened at the central portion in the longitudinal direction of the guide member 32.

  Like the spring 90 of the second embodiment shown in FIGS. 11 and 12, the spring 90 has a component of tensile force in the pressing direction which is the direction opposite to the gravity direction (downward in the vertical direction Z) and the transport direction Y. It is stretched in an oblique posture. For this reason, the spring 90 biases the guide member 32 in two directions, the gravity direction and the pressing direction. That is, the spring 90 shown in FIG. 11 and FIG. 12 biases the second surface 39A against the first surface 36A by adding the guide member 32 in the gravity direction. In addition to the function of the first member that biases the guide member 32 in the direction of gravity, the spring 90 biases the second surface 39A of the guide member 32 in the direction to press the second surface 39A against the first surface 36A of the main frame 31. It also functions as a member. For this reason, as shown in FIG. 13, the leaf spring 62 (FIG. 4) which functions as an example of the second biasing member in the first embodiment is eliminated. Further, due to the elimination of the plate spring 62, in the third embodiment, between the adjustment mechanism 50 in the scanning direction X, there are neither a fixing screw 64 nor a screw 63 for the plate spring 62.

  As shown in FIG. 13, the main frame 31 and the guide member 32 have substantially the same overall length in the scanning direction X, and screws in the range of 1/3 on each side when the overall length is equally divided into three in the scanning direction X 64 fastening positions are set. Further, the plurality of screws 64 are fastened to the fastening positions of the plurality of cam members 51 in the scanning direction X of the main frame 31, that is, to positions outside the fastening positions of the screws 52. For this reason, there is no screw 64 for fastening the main frame 31 and the guide member 32 in the central 1⁄3 range in the scanning direction X. Screws 64 are fastened to portions within a range of 1/3 of both sides in the scanning direction X with respect to the entire length of the guide member 32 and near the both ends where displacement of the main frame 31 and the guide member 32 is small. Therefore, even if the main frame 31 and the guide member 32 are curved along the longitudinal direction (that is, the scanning direction X), the first surface 36A and the second surface 39A (for example, Since the pedestal portion) is not forcibly pressed by the fastening, the distortion of the main frame 31 and the guide member 32 caused by the fastening of the screw 64 is suppressed to a small level. Therefore, after the operator operates the adjusting mechanism 50 to adjust the assembling position of the guide member 32 with respect to the main frame 31, even if the plurality of screws 64 are fastened, the guide member is caused due to the distortion caused by the fastening. It is avoided that the position 32 changes in the vertical direction Z from the position after adjustment.

  Furthermore, in the present embodiment, the fixing destination of the screw 52 for fixing the cam member 51 constituting the adjusting mechanism 50 in the adjusted position is changed to the main frame 31 and is used as the guide member 32. That is, in order to hold the cam member 51 in the rotated attitude after adjustment, even when the screw 52 is fastened, the guide member 32 is not pressed against the main frame 31 by the fastening force.

  Hereinafter, the adjustment mechanism 50 of the present embodiment will be described with reference to FIGS. 14 to 17. As shown in FIGS. 14 and 15, the cam member 51 is inserted into an insertion hole 92 formed by an elongated hole elongated in the vertical direction Z and opened in the frame portion 36 of the main frame 31 by the shaft 56 of the eccentric shaft 53. Thus, it is rotatable relative to the main frame 31 about the shaft 56 and can be relatively moved in the vertical direction Z. The screw 52 is a female screw 93 provided on the support plate 39 of the guide member 32 in a state where the screw 52 is inserted in the arc-shaped guide hole 54B as an example of the first opening in the fan-shaped plate 54 of the cam member 51. It is screwed on. The frame portion 36 of the main frame 31 is formed with an insertion hole 94 formed of a long hole extending in the vertical direction Z at a position corresponding to the female screw portion 93. At the time of adjusting the position of the guide member 32, the operator rotates the cam member 51 in a state where the screw attachment to the female screw portion 93 of the screw 52 inserted into the guide hole 54B of the cam member 51 is loosened. At this time, the shaft portion 56 of the cam member 51 moves along the insertion hole 85, and the female screw portion 93 and the shaft portion 52A of the screw 52 move along the insertion hole 94 (long hole). Is movable relative to the frame portion 36 of the main frame 31 in the vertical direction Z.

  As shown in FIGS. 14 to 17, the cam member 51 is disposed between the first convex portion 67 of the main frame 31 and the second convex portion 68 of the guide member 32. Therefore, the first sliding surface 54A of the fan-shaped plate portion 54 abuts on the first convex portion 67 projecting in the transport direction Y from the frame portion 36 of the main frame 31, and the second sliding surface 53A of the eccentric shaft portion 53. The (cam surface) abuts on the second convex portion 68 projecting in the transport direction Y from the support plate portion 39 of the guide member 32.

  As shown in FIG. 16, the other configuration of the cam member 51 is the same as that of the first and second embodiments. For example, both the first sliding surface 54A and the second sliding surface 53A are arc surfaces. The second radius of curvature of the second sliding surface 53A is smaller than the first radius of curvature of the first sliding surface 54A. The rotation center C1 of the cam member 51 is eccentric from the center C2 of the second virtual circle formed by the second sliding surface 53A. The fan-shaped plate portion 54 of the cam member 51 is formed by a second virtual circle formed by the second sliding surface 53A (cam surface) of the eccentric shaft portion 53 and a first sliding surface 54A of the fan-shaped plate portion 54 A guide hole 54B, which is an arc-shaped elongated hole as an example of a first opening along the first sliding surface 54A, is provided at a position inside the virtual circle. However, in the present embodiment, since the screw 52 is fixed to the female screw portion 93 of the guide member 32, the guide hole 54B is formed in a hole shape in which the distance F between the second convex portion 68 and the screw 52 becomes constant. There is. That is, in the surface of the fan-shaped plate portion 54 shown in FIG. 16, the guide hole 54B intersects the straight line passing through the rotation center C1 of the cam member 51 and the second sliding surface 53A, and the straight line and the center of the guide hole 54B. It is formed in a substantially arc shape in which the distance to the point of intersection with the line is constant.

  Further, as shown in FIGS. 16 and 17, the contact position between the first sliding surface 54A of the cam member 51 and the first convex portion 67, the second sliding surface 53A and the second convex portion 68 The distance D to the contact position changes in accordance with the rotational attitude of the cam member 51. For example, as shown in FIG. 16, the distance D is such that the first position P1 of the first sliding surface 54A is in contact with the first convex portion 67, and the first position Q1 of the second sliding surface 53A is the second. In the case of contact with the convex portion 68, as shown in FIG. 17, the second position P2 of the first sliding surface 54A contacts the first convex portion 67, and the second position Q2 of the second sliding surface 53A is This is different from the case of abutting on the second convex portion 68. Note that FIG. 16 shows the first positions P1 and Q1 when the cam member 51 is in the neutral position, and FIG. 17 shows the first position P1 when the cam member 51 is in the positive rotation position for raising the guide member 32. Although the two positions P2 and Q2 are shown, the distance D changes continuously according to the turning posture of the cam member 51.

  The operator rotates the plurality of cam members 51 to adjust the height and inclination of the guide member 32 with respect to the main frame 31 and finely adjusts the gap G to a standard value that is uniform in the scanning direction X. After this fine adjustment, even if the operator tightens the four screws 64 at positions on both sides 1/3 in the scanning direction X of the guide member 32, the main frame 31 and the guide member 32 have both surfaces 36A, The portions 392 are pressed against each other at a position close to both ends with little variation due to the curvature of 39A, and are not positively pressed at the central portion between the pair of adjustment mechanisms 50 in the scanning direction X. As a result, even if the long main frame 31 and the guide member 32 are somewhat curved, the main frame is caused by the forced pressure contact between the first surface 36A and the second surface 39A by the fastening of the fixing screw 64. It is possible to avoid a situation in which the adjusted assembly position of the guide member 32 fluctuates in the vertical direction Z due to the distortion generated in the guide 31 and the guide member 32.

  Furthermore, in the present embodiment, the screw 52 for holding the cam member 51 in a predetermined rotational posture is fixed to the guide member 32 by being screwed to the female screw portion 93. For this reason, even at the position of the screw 52 of the adjustment mechanism 50, the first surface 36A of the main frame 31 is not forcibly pressed into contact with the second surface 39A of the guide member 32. Therefore, the guide member 32 is in the range of 1/3 of the main frame 31 near the both ends in the scanning direction X, particularly in the range which is outside the screws 52 of the pair of adjustment mechanisms 50 in the scanning direction X in this example. The guide member 32 is fixed to the main frame 31 by four screws 64. For this reason, even if the first surface 36A of the main frame 31 and the second surface 39A of the guide member 32 are pressure-welded by the fastening of the four screws 64, the main frame at that time as compared The distortion generated on the guide member 31 and the guide member 32 can be reduced more effectively. As a result, the positional fluctuation of the guide member 32 after position adjustment can be suppressed to a smaller value more effectively.

According to the third embodiment, the following effects can be obtained.
(15) A plurality of screws 64 (fixing members) fastened to fix the guide member 32 to the main frame 31 are provided. The plurality of screws 64 are fastened at different positions in the vertical direction Z within the range of both sides of the main frame 31 divided into three equal parts in the scanning direction X. Therefore, when the guide member 32 is fixed to the main frame 31 by fastening the screw 64 after the position adjustment of the guide member 32 by the cam member 51, both the curved surfaces 36A and 39A are forcibly pressed. It is possible to suppress the distortion of the main frame 31 and the guide member 32 caused by the above. Therefore, it is possible to avoid the situation where the adjustment position of the guide member 32 with respect to the main frame 31 fluctuates in the vertical direction Z due to this kind of distortion.

  (16) The plurality of screws 64 are fastened at positions outside the fastening positions of the screws 52 of the plurality of cam members 51 in the scanning direction X of the main frame 31. Therefore, even if the pair of adjustment mechanisms 50 are disposed within the range of both sides 1/3 of the main frame 31 divided into three equal parts in the scanning direction X, the plurality of screws 64 are outside the screw 52 in the scanning direction X Since the fastening is performed at the position of the part side), it is possible to effectively avoid the situation where the relative position (adjustment position) of the guide member 32 after adjustment to the main frame 31 fluctuates in the vertical direction Z.

  (17) The cam member 51 has the first sliding surface 54A and the second sliding surface 53A, and the second curvature radius of the second sliding surface 53A is greater than the first curvature radius of the first sliding surface 54A. Too small. The rotation center C1 of the cam member 51 is eccentric from the center C2 of the second virtual circle formed by the second sliding surface 53A. The cam member 51 has a guide hole 54B (first opening) along the first sliding surface 54A outside the second virtual circle and inside the first virtual circle formed by the first sliding surface 54A. The adjustment mechanism 50 includes a screw 52 (fastening member) that fixes the cam member 51 to the guide member 32 by being fastened to the guide member 32 through the guide hole 54B. The guide member 32 and the screw 52 move relative to the main frame 31 in the vertical direction Z. Therefore, when the cam member 51 is operated to rotate, the cam member 51 rotates with relative movement in the vertical direction Z with respect to the main frame 31 so that the relative position of the guide member 32 in the vertical direction Z with respect to the main frame 31 Is adjustable. The screw 52 is fastened to the guide member 32 via the guide hole 54 B of the cam member 51. After adjusting the relative position of the guide member 32 by the cam member 51 while loosening the screw 52, the screw 52 is fixed to the guide member 32 even if the screw 52 is tightened. The opposite surfaces 36A and 39A of the lower and upper faces are not forcibly pressed. For this reason, the guide member 32 with respect to the main frame 31 is caused by the distortion of the main frame 31 and the guide member 32 which is caused by forced pressure contact between the opposing surfaces 36A and 39A of the main frame 31 and the guide member 32. It is possible to more effectively avoid the situation in which the relative position after adjustment in the vertical direction Z fluctuates.

In addition, the said embodiment can also be changed into the following forms.
In the first embodiment, the spring as an example of the first biasing member is replaced with a spring 61 formed of a torsion coil spring shown in FIG. 7 and the guide member 32 is mounted on the main frame 31 as shown in FIG. It is good also as spring 91 which consists of a coiled spring which urges in the direction of gravity. The spring 91 is hooked on a convex portion 39F as an example of a third convex portion whose both ends project from the support plate portion 39 of the guide member 32, and a convex portion 36G which protrudes from the frame portion 36 of the main frame 31. The projection 39F of the guide member 32 is biased in the direction of gravity. In this configuration, it is desirable to provide a plate spring 62 (an example of a second biasing member) that presses the guide member 32 against the main frame 31.

  In the first embodiment, the leaf spring 62 may be eliminated. For example, if there is a spring 61 as an example of the first biasing member, the guide member 32 can be lowered following the operation of the cam member 51 even if there is no plate spring 62 and the guide member 32 is slightly inclined.

  In the third embodiment, the plurality of screws 64 as an example of the fixing member may be cams in the scanning direction X as long as they are within a range of one-third of both sides of the main frame 31 divided into three in the scanning direction X. It may be the same position as the member 51 or a position outside (end side) of the fastening position of the cam member (the position of the screw 52).

  In each of the embodiments, the first convex portion 67 and the second convex portion 68 are provided, but the first convex portion 67 may be eliminated. In addition, the second convex portion 68 may be eliminated, and the opening may have an inner circumferential surface to which the cam surface described in Patent Document 1 can abut.

  The cam member 51 may not be disposed at the retracted position. In this case, since the cam member 51 is sandwiched between the first convex portion 67 and the second convex portion 68, the contact point between the first sliding surface 54A and the first convex portion 67, and the second slide The load can be dispersed to the contact point between the dynamic surface 53A and the second convex portion 68. Therefore, concentration of load on the eccentric shaft 53 of the cam member 51 can be avoided. The load received at the contact point between the eccentric shaft 53 and the second convex portion 68 is applied toward the center C2 of the second virtual circle shifted from the rotation center C1 of the eccentric shaft 53. Therefore, a force acts in the direction of rotating the eccentric shaft 53 by this load. However, since the cam member 51 of this example receives load dispersedly at a plurality of places, the load received by the cam member 51 at the contact point between the second sliding surface 53A and the second convex portion 68 is relatively large. It becomes smaller. For this reason, even when the fastening of the screw 52 is slightly loosened or the like, the cam member 51 is difficult to rotate, and the displacement of the guide member 32 and the displacement of the gap G due to the displacement can be avoided.

  The first sliding surface 54A may be a circumferential surface having a curvature radius in which the distance (radius) from the rotation center C1 changes in accordance with the rotation angle of the cam member 51. That is, the first sliding surface 54A may be a cam surface as in the second sliding surface 53A.

  The cam member is not limited to the rotating cam, and may be a cylindrical cam or a sliding (linear) cam. In short, the adjustment mechanism may be a cam-type adjustment mechanism capable of adjusting the relative position between the frame member and the guide member in the vertical direction Z.

  The outer peripheral surface of the fan-shaped plate portion 54 with the scale 54C at the periphery may be used as the cam surface. That is, the outer peripheral surface of the fan-shaped plate portion 54 is a cam surface whose rotational radius gradually changes according to the change of the position in the circumferential direction on the outer peripheral surface. Let the outer peripheral surface of the fan-shaped board part 54 be a cam surface (2nd cam surface) with surface).

  -Although the first engaged portion and the second engaged portion are a combination of the insertion hole for the driver and the insertion hole for the polygonal wrench, another combination having a different shape of the engaged portion It is also good. The first engaged portion and the second engaged portion may be a combination of the same shape corresponding to the same tool. For example, both the first insertion hole and the second insertion hole may be insertion holes for a driver, or both may be insertion holes for a polygonal wrench. Further, only one of the first engaged portion and the second engaged portion may be provided, and the other may be eliminated. The insertion hole for operating the cam member may be for a flathead driver.

  In addition to the driver and the polygonal wrench, the shape of the engaged portion may be set according to the general-purpose tool, and may be configured to be compatible with other general-purpose tools frequently used by workers. Further, the shape of the engaged portion which can be operated only by a special shaped tool or jig (star or the like) may be used so that the user of the recording apparatus 11 can not operate the cam member 51. In addition, not only a hole but a convex part may be sufficient as a to-be-engaged part.

The number of adjustment mechanisms 50 is not limited to one (two) but may be three or more.
The recording apparatus is not limited to the inkjet printer, and may be, for example, a dot impact printer, a thermal transfer printer, and an electrophotographic printer.

The recording apparatus is not limited to the serial scan method, and may be a lateral scan method in which the recording head (carriage) can move in two directions, the scanning direction and the sub-scanning direction.
The recording apparatus is not limited to a multifunction peripheral having a plurality of functions including a printing function, and may be a recording apparatus having only the printing function.

  The recording apparatus is not limited to a recording apparatus that prints an image or the like on a medium such as a sheet or a film, but may be an industrial recording apparatus used for manufacturing electronic parts and the like using printing technology (ink jet technology). As an industrial recording apparatus of this type, for example, a material liquid is jetted onto a substrate (an example of a medium) such as a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display to form electrodes and pixels by recording. A recording device is mentioned. Furthermore, the recording apparatus may be a three-dimensional inkjet printer that discharges a liquid such as a resin liquid to produce a three-dimensional object.

  DESCRIPTION OF SYMBOLS 11 ... Recording device, 12 ... Housing | casing, 16 ... Medium container, 18 ... Discharge port, 19 ... Discharge tray, 23 ... Printing part, 24 ... Carriage, 25 ... Recording head as an example of a recording part, 26 ... Support stand , 26A: support surface, 31: main frame as an example of frame member, 32: guide member, 33: side frame, 34: opening, 36: frame portion, 36A: first surface, 36B: third surface, 37: First rail 38: second rail 39A: second surface 39B: fourth surface 39D: convex portion as an example of a third convex portion 39E: convex portion 39F: an example of a third convex portion Convex part, second rail, 39: Support plate part, 41: Timing belt, 43: Transport part, 45: Transport roller pair, 46: Discharge roller pair, 47: Ring train, 48: Encoder, 50: Adjustment mechanism, 51 ... cam member, 52 ... fastening Examples of materials: Screws 53: Eccentric shaft portion 53A: Second sliding surface 54: Fan plate portion 54A: First sliding surface 54B: Guide hole as an example of the first opening 55: Covered A first insertion hole as an example of the engaging portion and the first engaged portion, 56 ... a shaft portion, 56A ... a restriction convex portion, 57 ... a second insertion hole as an example of a second engaged portion, 61 ... spring as an example of biasing member and first biasing member, 62 ... leaf spring as one example of second biasing member, 63 ... screw, 64 ... screw as one example of fixing member, 67 ... first convex portion 68: second convex portion 69: convex portion as an example of the holding portion 85: insertion hole as an example of the second opening 85A: circular hole portion 85B: regulating hole portion 90: biasing member and first A spring serving as both an example of the first biasing member and an example of the second biasing member, 91: a spring as an example of the biasing member and the first biasing member, 100 Control unit, M: Medium, GU: Automatic gap adjustment device, X: Scanning direction, Y: Transport direction, Z: Vertical direction, G: Gap, CW: Width dimension of carriage, PA: Print area, HP: Standby position Home position as an example, C1 ... rotation center, C2 ... center of second virtual circle, D ... distance, P1 ... first position of first sliding surface, Q1 ... first position of second sliding surface, P2 ... second position of first sliding surface, Q2 ... second position of second sliding surface.

Claims (17)

A carriage having a recording unit;
A guide member for movably guiding the carriage in the scanning direction;
A frame member that supports the guide member so as to be relatively movable in the vertical direction;
A plurality of adjustment mechanisms disposed at different positions in the scanning direction, including a cam member for adjusting the relative position of the guide member in the vertical direction with respect to the frame member;
And a biasing member for biasing the guide member in the direction of gravity with respect to the frame member. A carriage having a recording unit;
A member extending in the scanning direction of the carriage, the first surface having a normal line extending in a direction parallel to the transport direction of the medium to be recorded, and the first surface extending in the direction in which the normal line extends A frame member having one convex portion,
The member extends in the scanning direction of the carriage, and has a second surface arranged to face the first surface, and a second convex portion extending in the direction in which the normal extends. A guide member movably guiding in the scanning direction;
An adjustment mechanism including a cam member having a first sliding surface and a second sliding surface;
The adjustment mechanism
With the first surface of the frame member in contact with the second surface of the guide member,
The first sliding surface is slidable with the first convex portion, and the second sliding surface is slidable with the second convex portion.
The distance between the contact position of the first convex portion with which the first sliding surface abuts and the contact position of the second convex portion with which the second sliding surface abuts is the first sliding surface. And the second position of the second sliding surface is in contact with the first convex portion, and the second position of the first sliding surface is in the second position. A recording apparatus characterized in that it is different from the case where it abuts on a first protrusion and the second position of the second sliding surface abuts on the second protrusion. The second convex portion is located above the first convex portion,
And a biasing member for biasing the guide member against the frame member,
The guide member has a third protrusion extending in a direction opposite to the normal,
The recording apparatus according to claim 2, wherein the biasing member biases the third convex portion in a gravity direction.   When the biasing member is a first biasing member, a second biasing member is provided that presses the guide member against the frame member in a pressing direction that intersects the scanning direction and the gravity direction. The recording apparatus according to claim 1 or 3, wherein   5. The apparatus according to claim 4, wherein the first biasing member doubles as the second biasing member, and biases the guide member with respect to the frame member in the gravity direction and the pressing direction. Recording device as described. And a plurality of fixing members for fixing the guide member to the frame member by fastening.
The plurality of fixing members are fastened at different positions in the vertical direction within a range of one-third of both sides obtained by dividing the frame member into three equal parts in the scanning direction. The recording device according to any one of the preceding claims.   The recording apparatus according to claim 6, wherein the plurality of fixing members are fastened at positions outside the fastening positions of the plurality of cam members in the scanning direction of the frame member. The cam member has a first sliding surface and a second sliding surface,
The second radius of curvature of the second sliding surface is smaller than the first radius of curvature of the first sliding surface,
The rotation center of the cam member is eccentric from the center of a second virtual circle formed by the second sliding surface,
The cam member has a first opening along the first sliding surface outside the second virtual circle and inside a first virtual circle formed by the first sliding surface.
The adjustment mechanism includes a fastening member that fixes the cam member to the guide member by being fastened to the guide member via the first opening.
The guide member and the fastening member move in the vertical direction relative to the frame member according to a change in the relative position of the guide member to the frame member by the adjusting mechanism. The recording device described in. The cam member has a first sliding surface and a second sliding surface,
The second radius of curvature of the second sliding surface is smaller than the first radius of curvature of the first sliding surface,
The recording apparatus according to any one of claims 1 to 7, wherein a rotation center of the cam member is eccentric from a center of a second virtual circle formed by the second sliding surface. The cam member has a first opening along the first sliding surface outside the second virtual circle and inside a first virtual circle formed by the first sliding surface.
10. The recording apparatus according to claim 9, wherein the adjustment mechanism includes a fastening member fastened to the frame member and the guide member via the first opening.   The cam member is provided on the side of the frame member and the guide member facing the scanning path of the carriage, and the rotation center is eccentric from the center of the second virtual circle formed by the second sliding surface. It has an eccentric shaft portion rotatably supported by the frame member in a state, and an end surface of the eccentric shaft portion on the side opposite to the scanning path of the carriage can be engaged with a tool at the rotation center The recording apparatus according to any one of claims 8 to 10, wherein an engaged portion is provided. When the engaged portion is a first engaged portion,
The cam member has a second engaged portion engageable with a tool at the center of rotation on an end face of the eccentric shaft portion opposite to the end face provided with the first engaged portion. A recording apparatus according to claim 11, characterized in that: The recording apparatus according to claim 12, wherein the first engaged portion and the second engaged portion have different shapes. One of the first engaged portion and the second engaged portion has a shape engageable with a driver, and the other has a shape engageable with a polygonal wrench. The recording apparatus according to claim 13, wherein The cam member has an eccentric shaft portion including a shaft portion rotatably supported by the frame member,
The frame member has a second opening through which the shaft can be inserted,
The shaft portion has a locking projection for retaining that protrudes outward in the radial direction of the shaft portion, and
The second opening has a circular hole portion through which a portion other than the restriction convex portion in the shaft portion can be inserted, and a restriction hole portion extending radially outward from the circular hole portion so as to be able to insert the restriction convex portion. And
The recording apparatus according to any one of claims 1 to 14, wherein the cam member is rotatably provided in a range in which the restriction protrusion and the restriction hole do not face each other. . The adjustment mechanism is provided in a pair at different positions in the scanning direction,
The pair of adjustment mechanisms are positioned at an interval equal to or greater than the width dimension of the carriage in the scanning direction in the scanning direction, and is set at one end of the scanning path of the carriage in the pair of adjustment mechanisms. The apparatus according to any one of claims 1 to 15, wherein one of the standby positions is located at a position inside the scanning direction with respect to the carriage when in the standby position. Recording device.   The holding member which holds the cam member operated to the rotation limit position in the direction to displace the guide member in the direction of gravity in the rotation limit position is provided. 16. The recording device according to any one of 16.