JP2021094841A - Printing device - Google Patents

Abstract

To provide a cover opening/closing mechanism that can achieve excellent operability in both of internal maintenance and sheet mounting.SOLUTION: A printing device (100) comprises: a head for performing printing on a roll paper; a main body (4) that stores the roll paper on which printing is performed by the head; a conveying mechanism that conveys the roll paper in a conveying direction; a pressing mechanism that presses the roll paper at a predetermined position in an area to which the paper is conveyed; a post-processing part that performs post-processing to the roll paper having printing performed thereon by the head; a first cover (1) rotatably supported with respect to the main body (4) and mounted with at least the post-processing part; a second cover (2) turnably supported concentrically with the first cover (1) with respect to the main body (4); and a first engagement mechanism (11) that switches between an engagement state and a non-engagement state of the first cover (1) and the second cover (2).SELECTED DRAWING: Figure 2

Description

The present invention relates to a printing apparatus having a cover that can be opened and closed.

Some printing devices such as printers are provided with a cover that can be opened and closed on the main body so that the user can perform internal maintenance and attach a sheet, which is a printing medium, to the device.

For example, Patent Document 1 discloses a printing device including a downstream opening / closing cover that opens / closes on the downstream side in the transport direction of the printing device and an upstream opening / closing cover that opens / closes on the upstream side in the transport direction of the printing device. There is. The downstream opening / closing cover and the upstream opening / closing cover are provided so as to be opened individually with respect to the main body.

Patent No. 6281466

In the above-mentioned conventional technique, it is necessary to open both the downstream opening / closing cover and the upstream opening / closing cover in order to expose the sheet transport path when performing internal maintenance. Also, when attaching the roll-shaped sheet to the device, it is necessary to open both the downstream opening / closing cover and the upstream opening / closing cover.

For example, internal maintenance is centered on infrequent tasks such as sheet clogging and cleaning in the transport path, whereas seat attachment is relatively frequent. Therefore, when the seat is attached, the operation of opening and closing the downstream opening / closing cover and the upstream opening / closing cover is troublesome.

One aspect of the present invention is to provide a cover opening / closing mechanism that realizes good operability in both internal maintenance and seat mounting.

In order to solve the above problems, the printing apparatus according to one aspect of the present invention transports the printing unit that prints on the sheet, the main body that stores the sheet printed by the printing unit, and the sheet in the transport direction. A transfer mechanism for printing, a pressing mechanism for pressing the sheet at a predetermined position in a region where the sheet is conveyed, a post-processing unit for performing post-processing on the sheet printed by the printing unit, and a rotation with respect to the main body. A first cover that is movably supported and mounts at least the post-processing unit, a second cover that is rotatably supported with respect to the first cover in coaxial with the first cover, and the first cover and the first cover. 2 It is provided with a first engaging mechanism for switching between an engaged state and a non-engaged state with the cover.

Further, in order to solve the above problems, the printing apparatus according to another aspect of the present invention includes a printing unit for printing on a sheet, a main body for storing the sheet to be printed on the printing unit, and a transport direction for the sheet. To the main body, a transport mechanism for transporting the sheet, a pressing mechanism for pressing the sheet at a predetermined position in a region where the sheet is transported, a post-processing unit for performing post-processing on the sheet printed by the printing unit, and the main body. A first cover that is rotatably supported and mounts at least the post-processing unit, a second cover that is rotatably supported by the first cover, and a relationship between the first cover and the second cover. It is provided with a first engaging mechanism for switching between an engaged state and a non-engaged state.

According to one aspect of the present invention, it is possible to provide a cover opening / closing mechanism that realizes good operability in both internal maintenance and seat attachment.

It is a side view which shows the internal structure of the printing apparatus which concerns on Embodiment 1 of this invention. It is a side view which shows the structure of the 1st cover, the 2nd cover and the main body of the printing apparatus. It is a perspective view which shows the structure of the printing apparatus with the 1st cover and the 2nd cover open. It is a perspective view which shows the structure of the printing apparatus with the 2nd cover 2 open. It is a perspective view which shows the structure of a part of the printing apparatus in a state where the 2nd cover is closed. It is a perspective view which shows the structure of a part of the printing apparatus with the 2nd cover open. It is a side view which shows the internal structure in the state where the 1st cover and the 2nd cover of the printing apparatus are opened. It is a side view which shows the internal structure in the state which the 2nd cover is opened. It is a side view which shows the opening and closing structure of the 1st cover and the 2nd cover of the printing apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows the structure of the main part including the head of the printing apparatus which concerns on Embodiment 3 of this invention. It is a figure which shows the structure of the vicinity of the 1st cover of the printing apparatus which concerns on Embodiment 4 of this invention. It is a figure which shows the structure around the pressing member and the rotating member of the printing apparatus.

[Embodiment 1]
The first embodiment of the present invention will be described below with reference to FIGS. 1 to 8. FIG. 1 is a side view showing the internal structure of the printing apparatus 100 according to the first embodiment. First, each part of the printing apparatus 100 will be described.

The printing apparatus 100 shown in FIG. 1 is an inkjet printing type label printer. As shown in FIG. 1, the printing apparatus 100 includes a first cover 1, a second cover 2, a third cover 3, and a main body 4. Further, the printing apparatus 100 includes a roll paper holder 5, a transport mechanism 6, a head 7 as an example of a printing unit, a post-processing unit 8, a fan 9 as an example of a mist collection mechanism, and a filter holding unit 10. It has.

The main body 4 is a housing on which a part of the transport mechanism 6, a head 7, a part of the post-processing unit 8, and the like are mounted. Further, the main body 4 houses the roll paper holder 5 on one end side of the main body 4. The roll paper holder 5 holds the roll paper 51 as an example of the sheet, and sends out the roll paper 51 by being rotationally driven by a motor (not shown). The roll paper 51 is wound around the roll paper holder 5 in a roll shape.

In addition to roll paper, cut paper or fanfold paper may be used as the sheet. Further, the sheet is not limited to paper, and may be a roll of vinyl material, an electrical base material, or the like. When the sheet is an electrical base material, the printing device 100 is configured to print a wiring pattern by discharging a liquid containing a metal so as to print a wiring pattern of an electrical harness.

The first cover 1 and the second cover 2 are provided on the main body 4. The first cover 1 is rotatably supported with respect to the main body 4 by a rotating shaft 4B provided on the rising portion 4A of the main body 4. The second cover 2 is also rotatably supported by the rotating shaft 4B with respect to the main body 4. That is, the second cover 2 is coaxially supported with the first cover 1 and rotatably supported with respect to the main body 4. The rising portion 4A and the rotating shaft 4B will be described in detail later.

Here, in each embodiment including the first embodiment, the end portion on the downstream side in the transport direction in which the roll paper 51 is conveyed in the printing apparatus 100 shown in FIG. 1 is the front surface of the printing apparatus 100, and the first cover 1 and the second cover 1 and the second cover 100 are used. The cover 2 will be described as being arranged on the upper part of the printing apparatus 100. However, the front and top and bottom of the printing apparatus 100 are not limited to this example.

In the first cover 1 and the second cover 2, one end in the transport direction as an example of the first predetermined direction is pivotally supported by the main body 4 by the rotation shaft 4B, so that the other end in the transport direction is separated from the main body. The posture can be changed between the first posture and the second posture in which the other end portion is closer to the main body 4 than the first posture. The first cover 1 and the second cover 2 are arranged so as to line up in the transport direction in which the roll paper 51 is transported. Further, the first cover 1, the second cover 2, and the main body 4 are arranged so as to be arranged in a second predetermined direction from top to bottom.

In the roll paper 51, the end portion, that is, the lower end portion of the roll paper 51 in the second predetermined direction in which the first cover 1 and the second cover 2 and the main body 4 are lined up is from the center of the main body 4 in the second predetermined direction. Is also attached to the main body 4 so as to approach the end of the main body 4. Further, the roll paper 51 is arranged side by side with the second cover 2 in the second predetermined direction.

The transport mechanism 6 is a mechanism for transporting the roll paper 51 in a predetermined transport direction, and includes a tensioner 60, a transport roller 61, a pressing roller 62 as an example of a pressing mechanism, and a transport belt mechanism 63. .. In addition, instead of the above-mentioned transport mechanism 6, the printing device 100 may include a transport mechanism composed of only a pair of transport rollers, a transport mechanism composed of only a transport belt, and the like.

The transfer roller 61 is a roller that conveys the roll paper 51. The transport roller 61 is rotatably supported by the main body 4 and is rotationally driven by a motor (not shown). The pressing roller 62 is a roller that faces the conveying roller 61 at a predetermined position in the area where the roll paper 51 is conveyed and presses the roll paper 51 against the conveying roller 61, and is rotatably provided on the second cover 2. There is. The transport roller 61 and the pressing roller 62 form a roller pair, and by sandwiching and rotating the roll paper 51, the roll paper 51 fed from the roll paper holder 5 is conveyed in the transport direction.

The tensioner 60 is a roller that applies tension to the roll paper 51 between the roll paper holder 5, the transport roller 61, and the pressing roller 62. The tensioner 60 is rotatably supported by the main body 4.

The transport belt mechanism 63 is a mechanism in which an endless transport belt 63C is hung on the drive belt roller 63A and the driven belt roller 63B. The upper surface of the transport belt 63C serves as a transport surface for transporting the roll paper 51. The transport belt mechanism 63 is provided on the main body 4.

The head 7 has a large number of nozzles for ejecting UV ink as an example of a liquid on the surface of the transport belt 63C facing the transport surface for printing on the roll paper 51. With such a structure, the head 7 ejects UV ink onto the printing surface of the roll paper 51 conveyed on the conveying belt 63C to perform printing. The head 7 is supported by the main body 4.

The post-processing unit 8 performs post-processing on the roll paper 51 printed by the head 7. The post-processing unit 8 has a UV lamp 81, a table 82, an image reading mechanism 83, and a cutter 84 for performing post-processing. At least the post-processing unit 8 may be mounted on the first cover 1. The post-processing unit 8 may include, as a device for fixing the ink, a device for applying the post-treatment liquid after printing, such as a halogen heater, instead of the UV lamp 81, or by an electrophotographic method. , A post-treatment liquid may be applied to assist fixing.

The UV lamp 81 is a light source device that irradiates the roll paper 51 with UV light in order to quickly cure the UV ink discharged from the head 7 onto the roll paper 51. The UV lamp 81 is provided on the first cover 1. The UV lamp 81 is arranged so as to extend in a direction orthogonal to a transport direction and a second predetermined direction so as to irradiate UV light in the width direction of the roll paper 51. The table 82 is provided on the upper part of the main body 4 in order to place the roll paper 51 in the region where the UV light is irradiated by the UV lamp 81.

The image reading mechanism 83 is a mechanism for reading the printed image of the roll paper 51 on which the UV ink is fixed by irradiation with UV light and printing is completed. The read printed image is used for determining whether or not the printed image is normally printed by a processing unit configured by an ASIC (Application Specific Integrated Circuit) or the like. The image reading mechanism 83 includes an image reading unit 831, a mounting plate 832, a first transport roller 833, a first pressing roller 834, a second transport roller 835, and a second pressing roller 836. ..

The image reading unit 831 has an image reading sensor that reads an image of the printed surface of the roll paper 51. As this sensor, a well-known image reading sensor such as CIS (Contact Image Sensor) is used. The image reading unit 831 is provided on the first cover 1. The mounting plate 832 is a plate member on which the roll paper 51 on which the printed image can be read is placed. The mounting plate 832 is provided on the upper part of the main body 4.

The first transport roller 833 is a roller that transports the roll paper 51 at the inlet position of the image reading unit 831. The transport roller 61 is rotatably supported by the main body 4 and is rotationally driven by a motor (not shown). The first pressing roller 834 is a roller that faces the first transport roller 833 and presses the roll paper 51 against the first transport roller 833, and is rotatably provided on the first cover 1. The first transport roller 833 and the first pressing roller 834 rotate by sandwiching the roll paper 51, so that the image reading unit 831 reads the image of the roll paper 51 from the roll paper 51 sent out from the UV lamp 81. Transport to the area.

The second transfer roller 835 is a roller that conveys the roll paper 51 at the outlet position of the image reading unit 831. The second transport roller 835 is rotatably supported by the main body 4 and is rotationally driven by a motor (not shown). The second pressing roller 836 is a roller that faces the second conveying roller 835 and presses the roll paper 51 against the second conveying roller 835, and is rotatably provided on the first cover 1. The second transport roller 835 and the second pressing roller 836 sandwich and rotate the roll paper 51 to transport the roll paper 51 that has been removed from the image reading region.

The roller pair including the first transport roller 833 and the first pressing roller 834 presses the roll paper 51 at the inlet position of the image reading unit 831. On the other hand, the roller pair including the second transport roller 835 and the second pressing roller 836 presses the roll paper 51 at the outlet position of the image reading unit 831. As a result, the roll paper 51, which is easily curled, is fed into the image reading area in a flat state so that the image reading unit 831 can normally read the printed image.

The fan 9 guides the mist by blowing air in order to collect the mist generated by the UV ink ejected from the head 7 floating on the roll paper 51 without landing on the roll paper 51. The filter 10A collects the mist induced by the blown air of the fan 9. The fan 9 is attached to the first cover 1. The fan 9 is arranged on the side of the UV lamp 81 in a direction orthogonal to the transport direction and the second predetermined direction. Further, the filter 10A is held by the filter holding portion 10 so as to be removable with respect to the first cover 1. The filter holding portion 10 and the filter 10A are arranged so as to cover the air introduction side of the fan 9.

The fan 9, the filter 10A, and the filter holding portion 10 are provided on the first cover 1. The filter holding portion 10 holds the filter 10A so that the filter 10A can be removed in the direction having the component in the direction toward the downstream side in the transport direction when the first cover is in the above-mentioned first posture.

Next, the structures of the first cover 1, the second cover 2, and the main body 4 will be described in detail. FIG. 2 is a side view showing the structures of the first cover 1, the second cover 2, and the main body 4 of the printing apparatus 100. FIG. 3 is a perspective view showing the structure of the printing apparatus 100 in a state where the first cover 1 and the second cover 2 are open. FIG. 4 is a perspective view showing the structure of the printing apparatus 100 with the second cover 2 open. First, a structure for rotating the first cover 1 and the second cover 2 will be described. In FIG. 2, the transport mechanism 6, the head 7, the post-processing unit 8, the fan 9, the filter holding unit 10, and the filter 10A are omitted. Further, in FIGS. 3 and 4, the third cover 3, the transfer mechanism 6, the head 7, the post-processing unit 8, the fan 9, the filter holding unit 10 and the filter 10A are omitted, but the transfer roller of the transfer mechanism 6 is omitted. The 61 and the pressing roller 62 are shown.

As shown in FIG. 3, the main body 4 has a rectangular outer shape when viewed from above. A rising portion 4A is provided at the side edge portion on the long side side at the upper end of the main body 4. The rising portion 4A is a portion having a constant width formed so as to rise from the upper end of the side wall 401 of the main body 4. In FIG. 2, the rising portion 4A is drawn small for convenience.

A rotating shaft 4B is provided at the end of the rising portion 4A on the side where the roll paper holder 5 is provided. The rotating shaft 4B is provided as a cantilever structure in which one end is a fixed end fixed to the rising portion 4A and the other end is a free end. Further, the rotation shaft 4B is arranged so as to face in a direction orthogonal to the transport direction and the second predetermined direction.

As shown in FIG. 3, the first cover 1 has two side walls 101 and 102 facing each other along the transport direction. The side wall 101 has a length from an end portion on the downstream side of the main body 4 in the transport direction to a position slightly upstream of the central portion along the transport direction of the side wall 401 of the main body 4. The side wall 102 has a length substantially the same as the length of the main body 4 in the transport direction. The first cover 1 is rotatably supported by the rotation shaft 4B at the upstream end of the side wall 102 in the transport direction.

The second cover 2 has two side walls 201 facing each other along the transport direction. The second cover 2 is rotatably supported by the rotation shaft 4B at the upstream end of the side wall 201 in the transport direction. The first cover 1 and the second cover 2 are coaxially and rotatably supported by the rotating shaft 4B with respect to the main body 4.

Subsequently, the engaging structure of the first cover 1 and the second cover 2 and the engaging structure of the first cover 1 and the main body 4 will be described. As shown in FIG. 2, the printing apparatus 100 includes a first engaging mechanism 11, a second engaging mechanism 12, and a third engaging mechanism 13.

The first engaging mechanism 11 is a mechanism for switching between an engaged state and a non-engaged state between the first cover 1 and the second cover 2. The first engaging mechanism 11 includes a rotating mechanism 110, an engaging shaft 1A, a notch 2A, and a releasing member 2B.

The engaging shaft 1A is provided at the end of the first cover 1 to be joined to the second cover 2, that is, at the end on the upstream side in the transport direction so as to project toward the second cover 2. The engaging shaft 1A is provided in parallel with the rotating shaft 4B so as to be bridged over the side walls 101 and 102 of the first cover 1.

The notch 2A is provided on each of the two side walls 201 facing each other along the transport direction of the second cover 2. Specifically, the notch 2A is formed so as to be open to the main body 4 side at the end portion of the side wall 201 that engages with the first cover 1, that is, the end portion on the downstream side in the transport direction. Further, the notch 2A is formed at a position where it engages with the engaging shaft 1A when the first cover 1 and the second cover 2 shown in FIG. 2 are arranged side by side.

The rotating mechanism 110 has a support shaft 2C and a rotating member 111. The support shaft 2C is provided on the second cover 2 at a position higher than the notch 2A and on the upstream side in the transport direction in parallel with the rotation shaft 4B. The rotating member 111 is a member that rotates by being rotatably supported by the support shaft 2C. The rotating member 111 is provided inside the second cover 2. The rotating member 111 has two arm portions 111A and two hook portions 111B so as to correspond to the two notches 2A.

The arm portion 111A extends from the support shaft 2C in the direction opposite to the transport direction and further extends in the direction toward the main body 4 when the rotating member 111 is in the engaged state with the engaging shaft 1A shown in FIG. It is formed in a bending shape.

The hook portion 111B is formed in a shape that extends from the support shaft 2C toward the main body 4 side and further extends in the transport direction when in the engaged state with the engaging shaft 1A shown in FIG. .. Further, the tip of the hook portion 111B is provided so as to close the open portion of the notch 2A when in the above-mentioned engaged state.

The two arm portions 111A and the hook portion 111B are connected to each other inside the second cover 2 so as to be interlocked with each other by a joint portion (not shown).

With such a structure, the first engaging mechanism 11 has such a structure that the tip of the hook portion 111B is in a state where the engaging shaft 1A of the first cover 1 is in the notch 2A of the second cover 2. Blocks the open area of the notch 2A. As a result, the engaging shaft 1A is held by the notch 2A and the hook portion 111B, so that the engaging shaft 1A and the rotating member 111 are engaged with each other, that is, the first cover 1 and the second cover 2 are engaged with each other. An engaged state is obtained.

The release member 2B has an operation portion operated by the user outside the second cover 2, and has a contact portion that abuts the end portion of the arm portion 111A of the rotating member 111 inside the second cover 2. ing. The release member 2B is supported by the second cover 2 so as to be slidable in the vertical direction. In FIG. 2, only the operation portion is drawn for convenience.

The release member 2B is in a position where the contact portion abuts on the end portion of the arm portion 111A when the rotating member 111 shown in FIG. 2 and the engagement shaft 1A are in the engaged state. When the user slides the operation portion upward from that position, the contact portion of the release member 2B also moves upward. As a result, the arm portion 111A rotates in the counterclockwise direction in FIG. 2 when the arm portion 111A receives the pressing force of the release member 2B. Then, the tip of the hook portion 111B moves to a position retracted from the notch 2A. As a result, the engaged state of the rotating member 111 with the engaging shaft 1A is released.

When the user releases the operating portion of the disengaging member 2B after disengaging the engaged state, the disengaging member 2B is lowered by its own weight. The rotating member 111 rotates and returns to a position where the notch 2A shown in FIG. 2 is closed due to the weight balance.

The first engaging mechanism 11 is configured to engage the engaging shaft 1A in the notch 2A from below by the rotating mechanism 110, but the engaging direction is not limited to from below. For example, the rotating mechanism 110 may move and engage in the width direction of the printing device 100, which is a direction in which the transport direction and the second predetermined direction are orthogonal to each other. In this configuration, the engaging shaft 1A is arranged so as to face the second predetermined direction.

Further, the first engaging mechanism 11 may have a configuration other than the configuration including the rotating mechanism 110, the engaging shaft 1A, the notch 2A, and the releasing member 2B. For example, two slide shafts are provided on the two side walls 201 of the second cover 2 so as to be reciprocally movable in the transport direction and vice versa, and a holding structure for holding the slide shafts so as to be movable is provided. It may be provided on the side walls 101 and 102 of the first cover 1. In such a configuration, the second cover 2 can be engaged with the first cover 1 by sliding the slide shaft in the transport direction on the first cover 1 side and holding the slide shaft in the holding structure.

In addition, the first engaging mechanism 11 may include a magnet. In this configuration, the second cover 2 has a magnet in place of the rotating mechanism 110, the engaging shaft 1A, the notch 2A and the release member 2B, and the first cover 1 has the first cover 1 in place of the engaging shaft 1A. 2 It has a magnet on the other side that attracts the magnet on the cover 2.

The second engaging mechanism 12 is a mechanism for switching between an engaged state and a non-engaged state between the first cover 1 and the main body 4. The second engaging mechanism 12 is arranged closer to the second cover 2 than the center of the first cover 1 in the transport direction. The second engaging mechanism 12 includes a rotating mechanism 120, an engaging pin 4C, and a releasing member 4D.

The engaging pin 4C is a pin provided integrally with the main body 4. The engaging pin 4C is provided at a position close to the side wall 101 of the first cover 1 so as to protrude upward from the upper end surface of the main body 4. Further, the engaging pin 4C is arranged inside the first cover 1.

The rotating mechanism 120 has a support shaft 1B and a rotating member 121. The support shaft 1B is located on the side wall 101 of the first cover 1 at a position higher than the engagement pin 4C and slightly distant from the engagement pin 4C on the downstream side in the transport direction, with the rotation shaft 4B from the outer surface of the side wall 101. It is provided so as to project in a parallel direction. The rotating member 121 is a member that rotates by being rotatably supported by the support shaft 1B. The rotating member 121 is provided on the outer surface side of the side wall 101 of the first cover 1. The rotating member 121 has a hook portion 121A and an arm portion 121B.

When the rotating member 121 is in the engaged state with the engaging pin 4C shown in FIG. 2, the arm portion 121B extends from the support shaft 1B on the downstream side in the transport direction and diagonally on the main body 4 side, and further extends in the transport direction. It is formed in a shape that bends so as to extend to.

The hook portion 121A is formed in a bent shape so as to enter the inside of the first cover 1 from the middle through the arc slit 1C of the first cover 1. Further, the hook portion 121A has a shape that extends from the support shaft 1B toward the main body 4 side and further bends so as to extend in the direction opposite to the transport direction when the hook portion 121A is in the engaged state with the engagement pin 4C shown in FIG. Is formed in. Further, the tip of the hook portion 121A is provided so as to be in contact with the lower end of the engaging pin 4C when in the above-mentioned engaged state.

Due to such a structure, the second engaging mechanism 12 is separated from the main body 4 of the first cover 1 in a state where the tip of the hook portion 121A is in contact with the lower end of the engaging pin 4C, as shown in FIG. Block directional movement. As a result, an engaged state between the rotating member 121 and the engaging pin 4C, that is, an engaged state between the first cover 1 and the main body 4 can be obtained.

The release member 4D is operated by the user and comes into contact with the end of the arm portion 121B of the rotating member 121. The release member 4D is supported by the side wall 101 of the first cover 1 so as to be slidable in the vertical direction.

The release member 4D is in a position where the upper surface abuts on the end portion of the arm portion 121B when the rotating member 121 shown in FIG. 2 and the engagement pin 4C are in the engaged state. When the user slides the release member 4D upward from that position, the release member 4D moves upward. As a result, the arm portion 121B rotates in the clockwise direction in FIG. 2 when the arm portion 121B receives the pressing force of the release member 4D. Then, the tip of the hook portion 121A moves to a position retracted in the transport direction. As a result, the engaged state of the rotating member 121 with the engaging pin 4C is released.

When the user releases the disengaging member 4D after disengaging the engaged state, the disengaging member 4D is lowered by its own weight. Due to the weight balance, the rotating member 121 rotates and returns until the tip reaches the position of the lower end of the engaging pin 4C shown in FIG.

The third engaging mechanism 13 is another mechanism that switches between the engaged state and the non-engaged state of the first cover 1 and the main body 4. The third engaging mechanism is arranged near the most downstream end of the first cover 1 in the transport direction. The third engaging mechanism 13 includes a rotating mechanism 130, an engaging pin 4E, and a releasing member 4D. The release member 4D is shared with the second engaging mechanism 12.

The engagement pin 4E is a pin provided integrally with the main body 4. The engagement pin 4E is parallel to the rotation shaft 4B from the outer surface of the two side walls 401 near the upper end of the two opposing side walls 401 along the transport direction of the main body 4 at the downstream end in the transport direction. It is provided so as to protrude in the desired direction.

The rotating mechanism 130 has a support shaft 1D and a rotating member 131. The support shaft 1D is provided at the downstream end of the first cover 1 in the transport direction. As shown in FIG. 3, the support shaft 1D is provided in parallel with the rotation shaft 4B so as to be bridged over the side walls 101 and 102 of the first cover 1. The rotating member 131 is a member that rotates by being rotatably supported by the support shaft 1D. The rotating member 131 has an arm portion 131A and a hook portion 131B.

When the rotating member 131 shown in FIG. 2 and the engaging pin 4E are engaged with each other, the arm portion 131A bends so as to extend obliquely from the support shaft 1D to the upstream side in the transport direction and to the main body 4 side. It is formed in a shape.

The hook portion 131B is formed in a shape that extends from the support shaft 1D toward the main body 4 side and further extends in the transport direction when in the engaged state with the main body 4 shown in FIG. Further, the tip of the hook portion 131B is provided so as to be in contact with the lower end of the engaging pin 4E when in the above-mentioned engaged state.

One arm portion 131A and one hook portion 131B are provided on the outer surface side of the side walls 101 and 102 of the first cover 1. As shown in FIG. 3, the connecting portion 131C extends in a direction parallel to the rotating shaft 4B so as to connect the two arm portions 131A at a portion of the arm portion 131A near the support shaft 1D.

Due to such a structure, the third engaging mechanism 13 is separated from the main body 4 of the first cover 1 in a state where the tip of the hook portion 131B is in contact with the lower end of the engaging pin 4E, as shown in FIG. Block directional movement. As a result, an engaged state between the rotating member 131 and the engaging pin 4E, that is, an engaged state between the first cover 1 and the main body 4 can be obtained.

The release member 4D is in a position where the upper surface abuts on the end portion of the arm portion 131A when the rotating member 131 shown in FIG. 2 and the engagement pin 4E are in the engaged state. When the user slides the release member 4D upward from that position, the release member 4D moves upward. As a result, the arm portion 131A rotates in the counterclockwise direction in FIG. 2 when the arm portion 131A receives the pressing force of the release member 4D. Then, the tip of the hook portion 131B moves to a position where it retracts in the direction opposite to the transport direction. As a result, the engaged state of the rotating member 131 with the engaging pin 4E is released.

When the user releases the disengaging member 4D after disengaging the engaged state, the disengaging member 4D is lowered by its own weight. Due to the weight balance, the rotating member 131 rotates and returns until the tip reaches the position of the lower end of the engaging pin 4E shown in FIG.

Subsequently, the support structure of the third cover 3 will be described. FIG. 5 is a perspective view showing a part of the structure of the printing apparatus 100 in a state where the second cover 2 is closed. FIG. 6 is a perspective view showing a part of the structure of the printing apparatus 100 with the second cover 2 open. Note that, in FIGS. 5 and 6, only the second cover 2, the third cover 3, a part of the main body 4, and the roll paper holder 5 are shown, and other components are omitted.

As shown in FIG. 2, the third cover 3 is arranged at the upstream end of the second cover 2 and the main body 4 in the transport direction. The third cover 3 is formed in a rectangular plate shape. Further, the third cover 3 is rotatably supported at the end of the main body 4 away from the center of the second predetermined direction and away from the first cover 1 and the second cover 2 in the second predetermined direction. The lower end of the third cover 3 is rotatably joined to the upstream end in the transport direction at the bottom of the main body 4. Alternatively, the lower end of the third cover 3 may be pivotally supported by the end portion at the bottom portion of the main body 4.

As shown in FIG. 5, the upper end portion of the third cover 3, which is the end portion opposite to the portion rotatably supported by the end portion of the main body 4, is the rotation center of the second cover 2. It is held by the second cover 2 at a holding position away from the main body 4 in the second predetermined direction from the rotation shaft 4B. The structure of the retention is specifically configured as follows.

Two support portions 3A are provided in parallel on both side edges of the upper end portion of the third cover 3 so as to face each other. The support portion 3A is a rectangular plate-shaped portion, and is formed so as to extend in a direction orthogonal to the surface of the main body portion of the third cover 3. At the end of the support portion 3A connected to the second cover 2, a long hole 3B formed in a direction orthogonal to the longitudinal direction of the support portion 3A is formed.

The pin 2D is formed so as to project from the outer surface of the two side walls 201 of the second cover 2 in the same direction as the axial direction of the rotating shaft 4B at the holding position. The holding position is preferably closer to the first cover 1 side than the rotation shaft 4B.

By fitting the pin 2D into the elongated hole 3B of the third cover 3, the pin 2D can move in the elongated hole 3B as the third cover 3 rotates. As a result, the second cover 2 can support the third cover 3 without being hindered from rotating itself.

Further, other configurations relating to the first cover 1 and the second cover 2 will be described. As shown in FIGS. 2 to 4, circular vent holes 101A and 102A are formed on the side walls 101 and 102 of the first cover 1 at positions corresponding to the fans 9 shown in FIG. 1, respectively. The fan 9 creates an air flow through the ventilation holes 101A and 102A.

As shown in FIGS. 3 and 4, the printing apparatus 100 has wiring 14. The wiring 14 is provided to connect the electronic component mounted on the first cover 1 and the substrate 15 provided on the rising portion 4A of the main body 4. The wiring 14 is arranged on the upper surface of the first cover 1 on the side wall 102 side so as to be connected to the electronic components, and further passes through one end of the first cover 1 pivotally supported by the main body 4 and is connected to the main body 4. It is arranged so as to reach the rising portion 4A and be connected to the substrate 15.

Examples of the electronic components include a head 7, a fan 9, an image reading sensor of the image reading unit 831, a motor for driving the first transfer roller 833 and the second transfer roller 835, a cutter 84, and the like. Further, the above-mentioned ASIC, peripheral circuits of the ASIC, a power supply circuit, and the like are mounted on the substrate 15.

Here, the rotation of the first cover 1 and the second cover 2 with respect to the main body 4 will be described. FIG. 7 is a side view showing the internal structure of the printing apparatus 100 with the first cover 1 and the second cover 2 opened. FIG. 8 is a side view showing the internal structure of the second cover 2 in the open state. In FIG. 8, the side wall 102 of the first cover 1 is omitted for convenience.

As shown in FIG. 2, when the release member 4D is operated by the user while the first cover 1 and the second cover 2 are engaged by the first engaging mechanism 11, the second engaging mechanism 12 and the second cover 2 and the second cover 2 are engaged. The engagement state between the first cover 1 and the main body 4 by the third engagement mechanism 13 is released. In this state, when the downstream end of the first cover 1 in the transport direction is lifted, as shown in FIG. 7, the first cover 1 and the second cover 2 rotate about the rotation shaft 4B. , The posture away from the main body 4, that is, the posture open to the main body 4.

In this state, among the post-processing units 8, the UV lamp 81, the image reading unit 831, the first pressing roller 834, the second pressing roller 836, and the cutter 84 rotate together with the first cover 1 to separate from the transport path. As a result, the transport path can be made clearly visible.

On the other hand, as shown in FIG. 2, when the release member 2B is operated by the user while the first cover 1 and the second cover 2 are engaged by the first engagement mechanism 11, the first engagement mechanism The engagement state between the first cover 1 and the second cover 2 according to 11 is released. In this state, when the downstream end of the second cover 2 in the transport direction is lifted, as shown in FIG. 8, the first cover 1 stays on the main body 4, and the second cover 2 has the rotation shaft 4B. It rotates around the main body 4 and becomes a posture away from the main body 4, that is, an open posture with respect to the main body 4.

In this way, when the first cover 1 is rotated with respect to the main body 4 in the engaged state between the first cover 1 and the second cover 2, the first cover 1 and the second cover 2 are integrally formed into the main body 4. On the other hand, it can be opened and closed. Further, when the first cover 1 is in a closed position with respect to the main body 4 and the second cover 2 is rotated with respect to the main body 4 in a non-engaged state between the first cover 1 and the second cover 2, Only the second cover 2 can be opened and closed with respect to the main body 4.

As a result, when the internal maintenance of the printing apparatus 100 is performed, the first cover 1 and the second cover 2 are integrally rotated, and when the roll paper 51 is attached to the printing apparatus 100, only the second cover 2 is rotated. It becomes possible to make it. Therefore, good operability can be realized in both the internal maintenance and the attachment of the roll paper 51.

Further, when the printing device 100 includes the second engaging mechanism 12, the first cover 1 and the main body 4 are engaged at a position close to the position where the first cover 1 is engaged with the second cover 2. As a result, the force at which the engaging portions of the first cover 1 and the second cover 2 tend to float with respect to the main body 4 can be suppressed by the engagement between the first cover 1 and the main body 4.

Further, when the second cover 2 shown in FIG. 5 is in the position where the main body 4 is closed, the upper end portion of the third cover 3 approaches the rotation shaft 4B which is the rotation center of the second cover 2. In this state, the distance between the roll paper 51 and the third cover 3 becomes narrow.

On the other hand, when the second cover 2 shown in FIG. 6 is in the position where the main body 4 is opened, the upper end portion of the third cover 3 moves away from the rotation shaft 4B. In this state, the distance between the roll paper 51 and the third cover 3 becomes wide. As a result, it is possible to secure a wide space for attaching the roll paper 51 to the main body 4 with the second cover 2 open. Therefore, the roll paper 51 can be easily attached.

Further, when the first cover 1 shown in FIG. 7 is in the first posture away from the main body 4, the filter 10A can be removed from the filter holding portion 10 and replaced.

Further, in the printing apparatus 100, the wiring 14 is arranged so as to pass through one end of the first cover 1. As a result, the length of the wiring path between the electronic component and the substrate 15 when the first cover 1 is opened and closed is longer than that in the configuration in which the wiring 14 is arranged so as not to pass through one end of the first cover 1. Is hard to change, and it is possible to prevent the wiring 14 from coming off.

Further, in the printing apparatus 100, the pressing mechanism includes a conveying roller 61 provided on the main body 4 and a pressing roller 62 provided on the second cover 2. As a result, the transport roller and the pressing roller can be separated from each other with the second cover 2 open to the main body. Therefore, maintenance of the transport roller and the pressing roller can be easily performed.

Further, in the printing apparatus 100, the rotation shaft 4B is arranged so as to face in a direction orthogonal to the second predetermined direction and the transport direction. By rotating the first cover and the second cover around the rotation center arranged in this way, the first cover and the second cover can be opened and closed from the downstream side in the transport direction.

In this embodiment, as described above, an example in which the rotation shaft 4B, which is the rotation center of the first cover 1 and the second cover 2, is oriented in a direction orthogonal to the second predetermined direction and the transport direction has been described. However, the direction in which the rotation shaft 4B faces is not limited to this direction. For example, the rotation shaft 4B may be arranged so as to face the transport direction. In this configuration, the first cover 1 and the second cover 2 can be opened and closed from a direction orthogonal to the second predetermined direction and the transport direction.

[Embodiment 2]
Embodiment 2 of the present invention will be described below with reference to FIG. For convenience of explanation, the same reference numerals are added to the components having the same functions as the components described in the first embodiment, and the description is not repeated.

FIG. 9 is a side view showing an opening / closing structure of the first cover 1 and the second cover 2 of the printing apparatus 100 according to the second embodiment. Note that FIG. 9 shows only the first cover 1, the second cover 2, and the main body 4, and other components are omitted.

In the printing apparatus 100 of the first embodiment, as shown in FIG. 7, the first cover 1 and the second cover 2 rotate around the same rotation shaft 4B. Also in the present embodiment, as shown in FIG. 9, the side wall 102 of the first cover 1 is rotatably supported by the rotating shaft 4B with respect to the rising portion 4A of the main body 4, which is the printing apparatus of the first embodiment. It is the same as 100. On the other hand, in the present embodiment, the second cover 2 is rotatably supported with respect to the first cover 1 by the rotation shaft 102A provided on the side wall 102 of the first cover 1. It is different from the printing device 100 of.

Even with such a configuration, when the first cover 1 is rotated with respect to the main body in the engaged state of the first cover 1 and the second cover 2, the first cover 1 and the second cover 2 are integrally formed with the main body. Can be opened and closed. Further, when the first cover 1 is in a closed position with respect to the main body and the second cover 2 is rotated with respect to the first cover 1 in a non-engaged state between the first cover 1 and the second cover 2. , Only the second cover 2 can be opened and closed with respect to the main body.

As a result, when the internal maintenance of the printing apparatus 100 is performed, the first cover 1 and the second cover 2 are integrally rotated, and when the roll paper 51 is attached to the printing apparatus 100, only the second cover 2 is rotated. It becomes possible to make it. Therefore, good operability can be realized in both internal maintenance and seat mounting.

[Embodiment 3]
Embodiment 3 of the present invention will be described below with reference to FIGS. 1 and 10. For convenience of explanation, the same reference numerals will be added to the components having the same functions as the components described in the first and second embodiments, and the description will not be repeated. FIG. 10 is a diagram showing a configuration of a main part including a head of the printing apparatus 100 according to the third embodiment.

The printing apparatus 100 of the present embodiment shown in FIG. 1 is equipped with an inkjet head that ejects ink as the head 7. The printing device 100 is not limited to the inkjet printing method, and may be a device in which an electrophotographic printing method is adopted or a thermal head is adopted. In this embodiment, the printing apparatus 100 including the thermal head will be described.

In the present embodiment, as shown in FIG. 10, the printing apparatus 100 shown in FIG. 1 includes a thermal head 71 as an example of a printing unit and a platen roller 72 as an example of a roller. The thermal head 71 is a head that heats the ink ribbon 73. The ink ribbon 73 has a structure in which the ink 73B is coated on the base film 73A.

The platen roller 72 is arranged at a position facing the heat generating element at a distance from the heat generating element of the thermal head 71. The platen roller 72 is driven to rotate in the direction of the arrow. Further, the platen roller 72 sandwiches the ink ribbon 73 and the roll paper 51 between the platen roller 72 and the thermal head 71.

The pressing mechanism for pressing the roll paper 51 has a thermal head 71 and a platen roller 72 so as to transfer the ink 73B of the ink ribbon 73 to the roll paper 51.

At the time of printing by such a printing apparatus 100, the thermal head 71 and the platen roller 72 are conveyed in the conveying direction with the ink ribbon 73 and the roll paper 51 sandwiched therein, and the heat generating element of the thermal head 71 is selectively and intermittently conveyed. It is energized. As a result, the ink 73B of the ink ribbon 73 is transferred to a predetermined region on the surface of the roll paper 51.

Even in the printing apparatus 100 in which such a head 7 is a thermal head 71, the first cover 1 and the second cover 2 are rotated with respect to the main body 4 in an engaged state, or only the second cover 2 is attached to the main body 4. It can be rotated with respect to it.

[Embodiment 4]
Embodiment 4 of the present invention will be described below with reference to FIGS. 3, 4, 11 and 12. For convenience of explanation, the same reference numerals will be added to the components having the same functions as the components described in the first to third embodiments, and the description will not be repeated. FIG. 11 is a diagram showing a configuration in the vicinity of the first cover 1 of the printing apparatus 100 according to the fourth embodiment. FIG. 12 is a diagram showing a configuration in the vicinity of the pressing member 85 and the rotating member 86 of the printing apparatus 100.

As shown in FIGS. 3 and 4, the pressing member 85 is provided at a position downstream of the transport roller 61 in the transport direction. The pressing member 85 is a member for pressing the roll paper 51 at a desired position by pressing the roll paper 51 after the end portion of the roll paper 51 is installed between the conveying roller 61 and the pressing roller 62. Is. Although FIGS. 3 and 4 show a configuration in which the pressing member 85 is provided on the main body 4, it is assumed that the pressing member 85 is not provided on the main body 4 in the first embodiment. The position of the engaging shaft 1A of the present embodiment is different from the position of the engaging shaft 1A shown in FIGS. 3 and 4.

As shown in FIG. 11, the printing apparatus 100 includes a pressing member 85, a first rotating shaft 85A, a rotating member 86, a second rotating shaft 86A, and a detection sensor 87. A detection sensor 87 is provided on the pressing member 85, and the detection sensor 87 detects the roll paper 51 to be conveyed. The pressing member 85 is pivotally supported by the rotating member 86 via the first rotating shaft 85A.

The first rotating shaft 85A extends along the transport direction and is bridged to the rising portions 86B of the two rotating members 86 with respect to the rotating members 86 provided on the two side walls 401 of the main body 4 facing each other. Is provided in parallel with the rotating shaft 4B.

The rotating member 86 is composed of a rising portion 86B and an arm portion 86C. In the state where the arm 86C is housed inside the main body 4, the arm 86C extends in the transport direction, and the rising portion 86B is in the direction opposite to the second predetermined direction from the downstream end of the arm 86C in the transport direction. It is growing to. The two rotating members 86 are pivotally supported by the main body 4 via the second rotating shaft 86A. A connecting portion 86D for maintaining a constant distance between the two rotating members 86 is connected. The connecting portion 86D is provided on the side opposite to the second rotating shaft 86A side with respect to the rising portion 86B, and extends in a direction orthogonal to the transport direction and the second predetermined direction.

The second rotating shaft 86A is provided in parallel with the rotating shaft 4B so as to be bridged over the two side walls 401 of the main body 4. In a state where the arm portion 86C of the rotating member 86 is housed inside the main body 4, the first rotating shaft 85A and the second rotating shaft 86A are lined up in the transport direction, and the first rotating shaft 85A is the second rotating shaft. It is located downstream of the 86A in the transport direction.

As shown in F1 in FIG. 12, the pressing member 85 and the rotating member 86 are arranged between the conveying roller 61, the pressing roller 62, and the head 7 in the conveying direction. In FIG. 12, for convenience, configurations other than the head 7, the transport roller 61, the pressing roller 62, the pressing member 85, the first rotating shaft 85A, the rotating member 86, and the second rotating shaft 86A are omitted.

As shown in F2 in FIG. 12, the pressing member 85 rotates in the counterclockwise direction with respect to the rotating member 86 in FIG. That is, in a state where the arm portion 86C of the rotating member 86 is housed inside the main body 4, a part of the pressing member 85 moves away from the main body 4 and approaches the head 7.

Further, as shown in the figure shown in F3 in FIG. 12, the rotating member 86 rotates in the clockwise direction with respect to the main body 4 in FIG. That is, a part of the rotating member 86 moves away from the main body 4 and away from the head 7. Therefore, the direction in which the pressing member 85 rotates is opposite to the direction in which the rotating member 86 rotates.

Here, as shown in FIG. 11, in the present embodiment, the position of the first engaging mechanism 11 is different from that in the first embodiment. The first engaging mechanism 11 is arranged at a position where it does not come into contact with the pressing member 85 and the rotating member 86. Along with this, in the present embodiment, the position of the engaging shaft 1A is different and the shape of the notch 2A is also different as compared with the first embodiment.

As described above, the roll paper 51 can be easily attached to the printing apparatus 100 by rotating the second cover 2 and rotating the pressing member 85. Further, by rotating the second cover 2 and rotating the rotating member 86, it is possible to easily deal with the paper jam of the roll paper 51. Therefore, good operability can be realized in both the mounting of the roll paper 51 and the handling of paper jams.

[Additional notes]
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.

1 1st cover 2 2nd cover 3 3rd cover 4 Main body 4B Rotating shaft 7 Head (printing part)
8 Post-processing unit 9 Fan (mist collection mechanism)
10 Filter 11 1st engagement mechanism 12 2nd engagement mechanism 14 Wiring 15 Board 51 Roll paper (sheet)
62 Pressing roller (pressing mechanism)
71 Thermal head (printing part, pressing mechanism)
72 Platen roller (roller, holding mechanism)
73 Ink Ribbon 100 Printing Device

Claims (9)

The printing section that prints on the sheet and
A main body that stores the sheet printed by the printing unit, and
A transport mechanism that transports the sheet in the transport direction,
A pressing mechanism that presses the sheet at a predetermined position in the area where the sheet is conveyed,
A post-processing unit that performs post-processing on the sheet printed by the printing unit, and a post-processing unit.
A first cover that is rotatably supported with respect to the main body and mounts at least the post-processing unit.
A second cover that is coaxially and rotatably supported with the first cover with respect to the main body,
A printing apparatus comprising a first engaging mechanism for switching between an engaged state and a non-engaged state of the first cover and the second cover. The printing section that prints on the sheet and
The main body that stores the sheet to be printed on the printing unit and
A transport mechanism that transports the sheet in the transport direction,
A pressing mechanism that presses the sheet at a predetermined position in the area where the sheet is conveyed,
A post-processing unit that performs post-processing on the sheet printed by the printing unit, and a post-processing unit.
A first cover that is rotatably supported with respect to the main body and mounts at least the post-processing unit.
A second cover rotatably supported by the first cover,
A printing apparatus comprising a first engaging mechanism for switching between an engaged state and a non-engaged state of the first cover and the second cover. Further, a second engaging mechanism for switching between an engaged state and a non-engaged state of the first cover and the main body is provided.
The second engagement mechanism is characterized in that the first cover is arranged closer to the second cover than the center of the first cover in the first predetermined direction in which the first cover and the second cover are lined up. The printing apparatus according to claim 1 or 2. In the second predetermined direction in which the first cover and the second cover and the main body are lined up, the main body is rotated to an end portion of the main body away from the center of the second predetermined direction and away from the first cover and the second cover. With a third cover that is movably supported,
The sheet is wound in a roll shape, and the main body is arranged so that the end portion of the sheet in the second predetermined direction is closer to the end portion of the main body than the center of the main body in the second predetermined direction. The seat is further arranged side by side with the second cover in the second predetermined direction.
The end of the third cover opposite to the portion rotatably supported by the end of the main body is located at a position away from the main body in the second predetermined direction from the rotation center of the second cover. The printing apparatus according to any one of claims 1 to 3, wherein the printing apparatus is held by the second cover. The printing unit discharges a liquid onto the sheet for printing.
The first cover has a first posture in which one end in the transport direction is pivotally supported by the main body, so that the other end in the transport direction is separated from the main body, and the other end is more than the first posture. The posture can be changed to the second posture close to the main body.
The printing device is
A mist collection mechanism provided in the printing apparatus to collect the mist generated by the liquid, and
When the first cover is provided in the first cover and the first cover is in the first posture, the mist collected by the mist collection mechanism is collected in a direction having a component in a direction toward the downstream side in the transport direction. The printing apparatus according to any one of claims 1 to 4, further comprising a filter holding portion for holding the filter so that the filter can be removed. Electronic components for printing mounted on the first cover,
The substrate provided on the main body and
Further, a wiring for connecting the electronic component and the substrate is provided.
One end of the first cover in the transport direction is pivotally supported by the main body.
The wiring according to any one of claims 1 to 5, wherein the wiring is arranged so as to be connected to the substrate from the electronic component via the one end portion of the first cover. Printing equipment. Further provided with a transport roller provided in the main body and transporting the sheet,
The second cover is equipped with the holding mechanism.
The printing apparatus according to any one of claims 1 to 6, wherein the pressing mechanism has a pressing roller that faces the conveying roller and presses the sheet against the conveying roller. The rotation axis of the first cover and the rotation axis of the second cover are oriented in a direction orthogonal to the second predetermined direction in which the first cover, the second cover, and the main body are lined up, and the transport direction. The printing apparatus according to any one of claims 1 to 7, wherein the printing apparatus is arranged in such a manner. The printing unit is a thermal head that heats the ink ribbon.
The claiming mechanism is characterized in that it has a thermal head and a roller that sandwiches the ink ribbon and the sheet between the thermal head so as to transfer the ink of the ink ribbon to the sheet. Item 2. The printing apparatus according to any one of Items 1 to 8.

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