JP2012046254A - Transfer device and method, and picture drawing device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer device and method that can suppress a position almost perpendicular in a transfer direction of a medium to be transferred from shifting from a prescribed position, and to provide a picture drawing device and method.SOLUTION: The transfer device includes a transfer power transmitting means that comes into contact with the medium and transmits a transfer power, and transfers the medium in the direction prescribed by the transfer power. The transfer power transmitting means includes: a first roller that is rotated around a rotary axis by a driving source; a second roller that has a large outer diameter portion with an outer diameter larger than the first roller and that is integrally rotated with the first roller around the rotary axis; and a large outer diameter portion moving means that moves a position in an axial direction of the rotary axis in the large outer diameter portion.

Description

  The present invention provides a transport apparatus that transports a medium such as a drawing object and supplies the medium to a predetermined position such as a drawing area, a conveying method, and supplies the drawing object to the drawing position using the conveying apparatus or the conveying method. The present invention relates to a drawing apparatus and a drawing method for drawing an image or the like on a drawing object by arranging a liquid at a desired position of the supplied drawing object.

2. Description of the Related Art Conventionally, there has been known a liquid material ejecting apparatus that accurately disposes a predetermined amount of a liquid material at a predetermined position by discharging the liquid material as droplets and landing the liquid material on an arbitrary position. There is known a drawing apparatus that draws a predetermined shape such as an image by disposing a liquid material at a predetermined position on a drawing surface of a drawing medium by using the liquid material discharging apparatus.
In such a drawing apparatus, it is necessary to accurately supply the drawing medium to a predetermined position in the drawing apparatus. However, when the drawing medium is supplied, there is a case where the medium is meandering although it is a minute amount. Due to the meandering of the drawing medium, the position of the drawing medium in the direction intersecting the supply direction of the drawing medium may deviate from the specified position with respect to the drawing apparatus at the drawing execution position. there were. The misregistration is irregularly generated every time the drawing medium is conveyed, and there is a possibility that the drawing quality is deteriorated such as the shape of the image is broken.

Patent Document 1 includes a roll cylinder made of an elastic cylinder and a pressurizing chamber that supports an inner wall of the roll cylinder. The pressurizing chamber includes a plurality of chambers partitioned by partition walls, and a pressure adjusting means for fluid filling each chamber. There is disclosed a variable crown conveyance roll comprising: The apparatus disclosed in Patent Document 1 has a simple mechanism, does not take up an apparatus space, and has a purpose of proposing a transport roll that has high responsiveness and a large change amount when changing the crown amount.
Patent Document 2 discloses a meandering detection unit of a web, an electropneumatic regulator, an air cylinder in which a control pipe of the electropneumatic regulator is connected to one compartment, a meandering correction roller coupled to a piston of the air cylinder, A web meandering correction device comprising a compressed air supply connected to the other compartment is disclosed. The apparatus disclosed in Patent Document 2 is intended to provide an inexpensive web meandering correction device that accurately and quickly corrects the meandering of the web by accurately controlling the air cylinder.

Japanese Patent Laid-Open No. 3-20420 Japanese Patent Laid-Open No. 7-137898

However, in the apparatus disclosed in Patent Document 1, the maximum diameter position of the crown shape is determined in advance depending on the positions of the plurality of chambers, and therefore the maximum diameter position cannot always be moved to an arbitrary position. Therefore, there has been a problem that an appropriate correction amount cannot always be obtained when correction is performed corresponding to meandering.
In the apparatus disclosed in Patent Document 2, it is necessary to move the meandering correction roller in a direction crossing the flow direction of the web. For this reason, the power which can move the whole meandering correction roller in the direction crossing the flow direction is required. Since the force is larger than the force of flowing the web, there is a problem that a powerful driving source is essential. Further, since the entire heavy meandering correction roller is moved, there is a high possibility that the response speed is not sufficient.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A transport apparatus according to this application example includes a transport force transmitting unit that contacts a medium and transmits a transport force, and transports the medium in a direction defined by the transport force. The conveying force transmitting means has a first roller body that is rotated around a rotation axis by a drive source, and a large-diameter portion whose outer diameter is larger than the outer diameter of the first roller body, and the rotation axis A second roller body that is rotated together with the first roller body; and a large-diameter portion moving unit that moves a position of the large-diameter portion in the axial direction of the rotation shaft. And

  According to the transport apparatus according to this application example, the position in the axial direction of the rotation shaft of the large-diameter portion whose outer diameter in the transport force transmission unit is larger than the first roller body can be moved. The conveying force transmission means is a so-called crown roller in which the outer diameter of the large-diameter portion is larger than the other portions. The belt or the like driven by the crown roller is guided to a position where the central portion is driven by the crown portion in a direction perpendicular to the driving direction. In the direction orthogonal to the transport direction, the medium transported using the transport force transmitting means is guided and transported to a position where the central portion of the medium in the direction is in contact with the large diameter portion and transported. According to the transport device according to this application example, the large-diameter portion moving means can move the position of the large-diameter portion in the axial direction of the rotation shaft. For this reason, when the medium is transported, the position of the medium in the direction orthogonal to the transport direction can be adjusted.

  Application Example 2 A conveyance device according to the application example described above is a medium position detection unit that detects the position of the end of the medium in a direction substantially parallel to the surface direction of the medium and substantially perpendicular to the conveyance direction of the medium. And a position control means for controlling the position of the large diameter portion in the axial direction of the rotating shaft by controlling the large diameter portion moving means based on the detection result of the medium position detecting means. Is preferred.

  According to this transport apparatus, the position of the end of the medium in the direction substantially orthogonal to the transport direction can be detected by the medium position detection unit. For this reason, when the medium to be conveyed meanders, it can be detected as a positional deviation of the edge of the medium. By controlling the position control unit based on the detection result of the medium position detection unit and controlling the position of the large-diameter portion in the rotation axis direction, it is possible to correct the misalignment due to meandering.

  [Application Example 3] In the transport device according to the application example, the first roller body has a columnar shape having substantially the same outer diameter, and two sub-roller bodies that can rotate integrally around the rotation shaft. The second roller body is disposed between the sub-roller bodies of the two sub-roller bodies, and is rotatable integrally with the sub-roller body around the rotation shaft. And is capable of moving relative to the sub-roller body in the axial direction of the rotation shaft, and the large-diameter portion moving means rotates the second roller body with respect to the sub-roller body. While relatively moving in the axial direction of the shaft, it is preferable to hold at an arbitrary position.

  According to this conveying apparatus, the 2nd roller body is arrange | positioned between two sub roller bodies, and it rotates integrally around a rotating shaft. That is, a so-called crown roller is formed by the two sub roller bodies and the second roller body. The second roller body is relatively moved in the axial direction of the rotating shaft by the large diameter portion moving means, whereby the crown portion of the crown roller can be moved in the axial direction of the rotating shaft.

  Application Example 4 In the conveyance device according to the application example, the first roller body has a substantially cylindrical shape, and has a plurality of groove portions formed over the entire circumference in the circumferential direction of the outer peripheral wall. The two-roller body includes a plurality of annular members having an annular hollow portion and an annular outer shape, and each annular member of the plurality of annular members is formed of a rubber-like elastic body. It is preferable that the large diameter portion moving means is connected to the hollow portion, and the pressure in the hollow portion can be adjusted for each of the annular members.

  According to this transport device, the annular member is formed of a rubber-like elastic body, and has an annular hollow portion and an annular outer shape, and the pressure in the hollow portion is transferred to the large diameter portion moving means. Can be adjusted by. With this configuration, the outer diameter of the outer shape can be changed by adjusting the pressure in the hollow portion. By changing the outer diameter of the annular member fitted into the groove of the first roller body, the protruding amount of the annular member from the cylindrical first roller body can be changed. A so-called crown roller is formed by projecting the annular member from the cylindrical first roller body. The crown roller has a function of exerting an action on the medium due to each annular member functioning like a crown portion. By projecting the plurality of annular members from the first roller body, each of the plurality of annular members has a function of acting on the medium by combining the actions of the annular members functioning like a crown portion. . The position in the direction substantially orthogonal to the medium transport direction is a position determined by the resultant force of the force applied to the medium due to the presence of the respective annular members. By adjusting the amount of protrusion from the first roller body for each annular member by adjusting the pressure in the hollow portion for each annular member, the position in the direction substantially perpendicular to the medium transport direction can be adjusted.

  Application Example 5 A conveying method according to this application example includes a first roller body that is rotated around a rotation axis by a driving source, and a large-diameter portion whose outer diameter is larger than the outer diameter of the first roller body. Then, the conveying force is transmitted by bringing a conveying force transmitting means comprising a second roller body rotated integrally with the first roller body around the rotation axis into contact with the medium. A transport method for transporting the medium using transport means for transporting the medium in a prescribed direction, wherein the position of the large-diameter portion in the transport force transmitting means in the axial direction of the rotating shaft is adjusted. It has the large diameter part position adjustment process, It is characterized by the above-mentioned.

  According to the conveying method according to this application example, in the large-diameter portion position adjusting step, the position in the axial direction of the rotating shaft of the large-diameter portion that is a portion where the outer diameter of the conveying force transmitting unit is larger than the first roller body Can be adjusted. The conveying force transmission means is a so-called crown roller in which the outer diameter of the large-diameter portion is larger than the other portions. The belt or the like driven by the crown roller is guided to a position where the central portion is driven by the crown portion in a direction perpendicular to the driving direction. In the direction orthogonal to the transport direction, the medium transported using the transport force transmitting means is guided and transported to a position where the central portion of the medium in the direction is in contact with the large diameter portion and transported. According to the conveying method according to this application example, the position of the large diameter portion in the axial direction of the rotation shaft can be adjusted by the large diameter portion position adjusting step. For this reason, when the medium is transported, the position of the medium in the direction orthogonal to the transport direction can be adjusted.

  Application Example 6 The conveyance method according to the application example includes a medium position detection step of detecting a position of the end of the medium in a direction substantially parallel to the surface direction of the medium and substantially orthogonal to the medium conveyance direction. Furthermore, it is preferable that in the large-diameter portion position adjusting step, the position of the large-diameter portion in the rotation axis direction is adjusted based on the detection result in the medium position detecting step.

  According to this transport method, in the medium position detection step, the position of the end of the medium in a direction substantially orthogonal to the transport direction is detected. When the medium to be conveyed meanders, it can be detected as a positional deviation of the edge of the medium by this medium position detecting step. In the large diameter portion position adjusting step, the position of the large diameter portion in the rotation axis direction is adjusted based on the detection result in the medium position detecting step. Thereby, the position shift by meandering can be corrected.

  Application Example 7 A drawing apparatus according to this application example includes discharge means for discharging a liquid material, and causes the liquid material discharged from the discharge means to land on the drawing medium, thereby causing the liquid material to be applied to the object to be drawn. A drawing unit arranged on a drawing medium for drawing an image made of the liquid material, and a conveying force transmitting unit for transmitting a conveying force by contacting the drawing medium, in a direction defined by the conveying force A drawing device comprising: a conveying means for conveying the drawing medium; wherein the conveying force transmitting means is a first roller body rotated around a rotation axis by a driving source, and an outer diameter of the first roller body. A second roller body having a larger diameter portion larger than the outer diameter of the roller body and rotated integrally with the first roller body around the rotation shaft; and the axis of the rotation shaft of the large diameter portion Large moving position in direction Characterized in that it comprises a part moving means.

  According to the drawing apparatus according to this application example, the transport unit can move the position in the axial direction of the rotation shaft of the large-diameter portion whose outer diameter in the transport force transmission unit is larger than the first roller body. it can. The conveying force transmission means is a so-called crown roller in which the outer diameter of the large-diameter portion is larger than the other portions. The belt or the like driven by the crown roller is guided to a position where the central portion is driven by the crown portion in a direction perpendicular to the driving direction. The drawing medium conveyed using the conveying force transmission means is guided and conveyed in a direction orthogonal to the conveying direction to a position where the central portion of the drawing medium in the direction is in contact with the large diameter portion and conveyed. The According to the conveying unit of the drawing apparatus according to this application example, the position of the large-diameter portion in the axial direction of the rotation shaft can be moved by the large-diameter portion moving unit. Therefore, when the drawing medium is conveyed, the position of the drawing medium in the direction orthogonal to the conveyance direction can be adjusted.

  Application Example 8 In the drawing apparatus according to the application example, the position of the end of the drawing medium in a direction substantially parallel to the surface direction of the drawing medium and substantially perpendicular to the conveyance direction of the drawing medium is determined. Medium position detecting means for detecting, and position control means for controlling the position of the large diameter portion in the axial direction of the rotating shaft by controlling the large diameter portion moving means based on the detection result of the medium position detecting means. It is preferable to further comprise.

  According to this drawing apparatus, the position of the end of the drawing medium in the direction substantially orthogonal to the transport direction can be detected by the medium position detecting means. For this reason, when the drawing medium to be conveyed meanders, it can be detected as a positional deviation of the end of the drawing medium. Based on the detection result of the medium position detection means, the position control means controls the position of the large diameter portion in the rotation axis direction, thereby correcting the position shift due to meandering.

  Application Example 9 A drawing method according to this application example includes a first roller body that is rotated around a rotation axis by a driving source, and a large-diameter portion whose outer diameter is larger than the outer diameter of the first roller body. A conveying force transmitting means comprising: a second roller body that is rotated integrally with the first roller body around the rotation axis; The apparatus includes a discharge unit that transfers the drawing medium using a transfer unit that transfers the drawing medium in a direction defined by a force, and discharges the liquid material. A drawing method in which the liquid is placed on the drawing medium by being landed on the drawing medium, and drawing is performed using a drawing unit that draws an image made of the liquid. The large diameter part Characterized in that it has a large diameter portion position adjustment step of adjusting the position in the axial direction of the shaft.

  According to the drawing method according to this application example, in the large-diameter portion position adjusting step, the position of the large-diameter portion in which the outer diameter of the conveying force transmitting unit is larger than the first roller body in the axial direction of the rotation shaft is determined. Can be adjusted. The conveying force transmission means is a so-called crown roller in which the outer diameter of the large-diameter portion is larger than the other portions. The belt or the like driven by the crown roller is guided to a position where the central portion is driven by the crown portion in a direction perpendicular to the driving direction. The drawing medium conveyed by the conveying force transmitting means is guided and conveyed in a direction orthogonal to the conveying direction to a position where the central portion of the drawing medium in the direction is in contact with the large diameter portion and conveyed. According to the drawing method according to this application example, the position of the large diameter portion in the axial direction of the rotation shaft can be adjusted by the large diameter portion position adjusting step. Therefore, when the drawing medium is conveyed, the position of the drawing medium in the direction orthogonal to the conveyance direction can be adjusted.

  Application Example 10 The drawing method according to the above application example detects the position of the end of the drawing medium in a direction substantially parallel to the surface direction of the drawing medium and substantially perpendicular to the conveyance direction of the drawing medium. It is preferable that a medium position detecting step is further provided, and in the large diameter portion position adjusting step, the position of the large diameter portion in the rotational axis direction is adjusted based on a detection result in the medium position detecting step.

  According to this drawing method, in the medium position detection step, the position of the end of the drawing medium in the direction substantially orthogonal to the transport direction is detected. When the drawing medium to be conveyed meanders, it can be detected as a positional deviation of the end of the drawing medium by this medium position detecting step. In the large diameter portion position adjusting step, the position of the large diameter portion in the rotation axis direction is adjusted based on the detection result in the medium position detecting step. As a result, when a position shift occurs due to meandering of the drawing medium, the position shift due to the meander can be corrected.

(A) is a schematic plan view which shows schematic structure of a drawing apparatus. FIG. 2B is a schematic side view illustrating a schematic configuration of the drawing apparatus. FIG. 3A is an external perspective view showing a schematic configuration of a droplet discharge head. (B) is a top view which shows schematic structure of a head unit. Explanatory drawing which shows the structure for implementing the structure of a medium feed roller, and correction | amendment of the position shift of a film. Explanatory drawing which shows the structure for implementing the structure of a medium feed roller, and correction | amendment of the position shift of a film.

  Hereinafter, a conveyance device, a conveyance method, a drawing device, and a drawing method will be described with reference to the drawings. In the present embodiment, a drawing apparatus and a drawing method used in a step of drawing an image on a belt-like film that is an example of a drawing medium will be described as an example.

<Drawing device>
Initially, the structure of the drawing apparatus 1 which draws on the film 10 is demonstrated with reference to FIG. FIG. 1 is a schematic diagram illustrating a schematic configuration of a drawing apparatus. FIG. 1A is a schematic plan view showing a schematic configuration of the drawing apparatus, and FIG. 1B is a schematic side view showing a schematic configuration of the drawing apparatus. The film 10 corresponds to a medium or a drawing medium.

As shown in FIG. 1, the drawing apparatus 1 includes a head mechanism unit 2 having a droplet discharge head 20, a supply / discharge mechanism unit 3, a functional liquid supply unit (not shown), and a maintenance device unit 5. ing.
The droplet discharge head 20 provided in the head mechanism unit 2 is an inkjet droplet discharge head, and discharges a functional liquid having ultraviolet curable properties as droplets toward a drawing target. The supply / discharge mechanism unit 3 places the film 10 that is a drawing target for landing the droplets discharged from the droplet discharge head 20 at the drawing position, and moves the film 10 from the drawing position after drawing. The functional liquid supply unit supplies the functional liquid to the droplet discharge head 20. The maintenance device unit 5 performs maintenance of the droplet discharge head 20.
The drawing apparatus 1 is also provided with a drawing apparatus control unit 8 (see FIG. 3) that comprehensively controls these mechanisms and the like. The droplet discharge head 20 corresponds to the discharge unit. The head mechanism unit 2 corresponds to a drawing unit. The functional liquid corresponds to a liquid material. The supply / discharge mechanism unit 3 corresponds to a transport device or a transport unit.

The supply / discharge mechanism unit 3 includes a supply reel 31, a take-up reel 32, a suction unit 30, an idler roller 37, an idler roller 38, a Y-axis scanning mechanism 42, and an imaging camera 52.
The Y-axis scanning mechanism 42 includes a pair of Y-axis guide rails 42a and Y-axis sliders 42b. The suction unit 30 includes a suction table 33, a table base 43, a table lifting mechanism 44, a supply roller 34, a driven roller 34a, a medium feeding roller 36, and a driven roller 36a. Each reel and each roller can rotate around a rotation axis, and each rotation axis is substantially parallel to each other.
The direction in which the film 10 is fed is a direction that is substantially orthogonal to the axial direction of each reel that is substantially parallel to each other and the rotation axis of each roller. A direction parallel to the axial direction of the rotation axis of each reel and each roller is expressed as an X-axis direction, and a feeding direction of the film 10 is expressed as a Y-axis direction.

One Y-axis guide rail 42a of the Y-axis scanning mechanism 42 is disposed on each side in the X-axis direction with the suction table 33 interposed therebetween, and extends in the Y-axis direction. The Y-axis slider 42b is supported by the Y-axis guide rail 42a via the Y-axis drive motor so that it can slide in the Y-axis direction and can be held at an arbitrary position.
One end of the table base 43 of the suction unit 30 is fixed to the Y-axis slider 42b supported on each of the two Y-axis guide rails 42a. The table 43 having both ends fixed to the Y-axis slider 42b is supported by the Y-axis slider 42b and passed between the two Y-axis guide rails 42a. The table base 43 is slidable in the Y-axis direction along the Y-axis guide rail 42a by the Y-axis drive motor, and can be held at an arbitrary position in the Y-axis direction.

  The suction table 33 of the suction unit 30 is fixed to a table elevating mechanism 44 fixed to the table base 43. The table lifting mechanism 44 can move the suction table 33 up and down in the Z-axis direction, which is a direction orthogonal to the X-axis direction and the Y-axis direction, with respect to the table base 43, and the position of the suction surface 33 a of the suction table 33. Is supported so as to be held at a suction position, which is a predetermined position in the Z-axis direction, and a retracted position closer to the table base 43 than the suction position. The predetermined position in the Z-axis direction of the suction surface 33a of the suction table 33 located at the suction position is a position that substantially coincides with the position of the surface in contact with the outer periphery of the supply roller 34 and the outer periphery of the medium feed roller 36 described later.

The supply roller 34 and the driven roller 34a, and the medium feeding roller 36 and the driven roller 36a are fixed to the table base 43 via a support member (not shown). The supply roller 34 and the driven roller 34a, and the medium feeding roller 36 and the driven roller 36a are disposed on both sides of the suction table 33 in the Y-axis direction. The film 10 is supplied substantially parallel to the Y-axis direction, and the supply roller 34 and the driven roller 34a are disposed on the upstream side of the suction table 33 in the supply direction of the film 10, and the medium feeding roller 36 and the driven roller 36a. Is disposed downstream of the suction table 33.
The table base 43 is slidable in the Y-axis direction by the Y-axis scanning mechanism 42 and is supported so as to be held at an arbitrary position in the Y-axis direction. The suction table 33, the supply roller 34 and the driven roller 34a, and the medium feeding roller 36 and the driven roller 36a are slidable in the Y-axis direction by the Y-axis scanning mechanism 42, and are at arbitrary positions in the Y-axis direction. It can be held.

  The supply reel 31, the idler roller 37, the suction unit 30, the idler roller 38, and the take-up reel 32 included in the supply / discharge mechanism 3 are arranged in this order along the Y-axis direction. In the suction unit 30, the supply roller 34 and the driven roller 34a, the suction table 33, the medium feeding roller 36, and the driven roller 36a are arranged in this order along the Y-axis direction. Therefore, in the supply / discharge mechanism 3, the supply reel 31, the idler roller 37, the supply roller 34 and the driven roller 34a, the suction table 33, the medium feeding roller 36 and the driven roller 36a, the idler roller 38, and the winding roller The reels 32 are arranged in this order along the Y-axis direction.

A belt-like film 10 is wound around the supply reel 31, and the film 10 is fed out by rotating the supply reel 31 by a supply motor.
The outer periphery of the driven roller 34a is in contact with the outer periphery of the supply roller 34, and is pressed against the supply roller 34 by an urging device. The supply roller 34 is rotated by the supply motor, and the driven roller 34 a in contact with the supply roller 34 rotates according to the supply roller 34. The film 10 supplied from the supply reel 31 is sandwiched between the supply roller 34 and the driven roller 34 a and pressed against the supply roller 34 by the driven roller 34 a, and the outer periphery is rotated by the rotation of the supply roller 34. A length approximately equal to the length is supplied.

  The idler roller 37 can swing in a direction in which the rotation shaft intersects the axial direction, and is biased in one of the swing directions. The idler roller 37 is in contact with the portion of the film 10 between the supply reel 31, the supply roller 34, and the driven roller 34a by the urging force. By abutting the idler roller 37 in a biased state, the portions between the supply reel 31 and the idler roller 37 and between the idler roller 37 and the supply roller 34 and the driven roller 34a are stretched almost without slack. ing. Thereby, the state at the time of being supplied and pinched between the supply roller 34 and the driven roller 34a is easy to maintain the film 10 substantially flat. Further, the amount of slack in the portion between the supply reel 31, the supply roller 34, and the driven roller 34a varies depending on the difference between the supply speed of the film 10 in the supply roller 34 and the feeding speed of the film 10 in the supply reel 31. However, by changing the position of the idler roller 37 following the fluctuation of the slack amount, the tensioned state is maintained substantially without slack. Similarly, with respect to fluctuations in the amount of slack in the portion between the supply reel 31 and the supply roller 34 and the driven roller 34a due to the movement of the suction unit 30, the tensioned state is maintained substantially without slack.

  The driven roller 36a has an outer periphery that is in contact with the outer periphery of the medium feeding roller 36, and is pressed against the medium feeding roller 36 by an urging device. The medium feeding roller 36 is rotated by a medium feeding motor, and the driven roller 36 a that is in contact with the medium feeding roller 36 rotates according to the medium feeding roller 36. The film 10 supplied by the rotation of the supply roller 34 is sandwiched between the medium feed roller 36 and the driven roller 36a and pressed against the medium feed roller 36 by the driven roller 36a. Thereby, a length substantially equal to the rotation length of the outer periphery due to the rotation of the medium feeding roller 36 is fed.

The feed amount by the medium feed roller 36 is set to be larger than the feed amount by the supply roller 34. A torque control mechanism is incorporated in the power transmission mechanism from the medium feed motor to the medium feed roller 36. The film 10 that can be fed faster than the supply roller 34 by the medium feed roller 36 is stretched at a portion between the supply roller 34 and the medium feed roller 36 with a tension according to the torque controlled by the torque control mechanism.
The medium feeding roller 36 includes a crown member 363 (see FIG. 3) whose outer diameter is larger than the outer diameter of the roller portion 361 (see FIG. 3). By moving the crown member 363 in the axial direction of the rotation axis (X-axis direction), the positional deviation in the X-axis direction of the portion of the film 10 between the supply roller 34 and the medium feed roller 36 is corrected. Details of the configuration of the medium feeding roller 36 and correction of the positional deviation of the film 10 will be described later. The medium feeding roller 36 corresponds to a conveying force transmission unit.

  The suction surface 33 a of the suction table 33 faces the portion of the film 10 that is stretched between the supply roller 34 and the medium feed roller 36. The position of the suction surface 33a of the suction table 33 located at the suction position described above substantially coincides with the position of the surface in contact with the outer periphery of the medium feed roller 36 and the outer periphery of the supply roller 34. The suction surface 33a of the suction table 33 located at the suction position is substantially in contact with the film 10 stretched between the supply roller 34 and the medium feed roller 36 in the design value of the drawing apparatus 1.

The suction table 33 sucks the film 10 on the suction surface 33a. The adsorption surface 33a is a flat surface, and the portion of the film 10 adsorbed on the adsorption surface 33a is maintained in a flat state.
As an adsorption method, there can be used a method of providing an atmospheric suction device and adsorbing by negative pressure, a method of providing a charging and neutralizing device and adsorbing by static electricity, and the like.

The take-up reel 32 is rotated by a take-up motor. The film 10 sent out from the medium feed roller 36 is taken up by a take-up reel 32 that rotates.
The idler roller 38 can swing in a direction in which the rotation shaft intersects the axial direction of the rotation shaft, and is biased in one of the swing directions. The medium feed roller 36, the driven roller 36 a and the idler are brought into contact with a portion of the film 10 between the medium feed roller 36 and the driven roller 36 a and the take-up reel 32 with the idler roller 38 being urged. The portions between the rollers 38 and between the idler roller 38 and the take-up reel 32 are stretched almost without slack. Thereby, the film 10 is easily maintained in a substantially flat state when being wound on the take-up reel 32. Further, the amount of slack in the portion between the medium feed roller 36 and the take-up reel 32 varies depending on the difference between the feed speed of the film 10 on the medium feed roller 36 and the take-up speed of the film 10 on the take-up reel 32. . However, by changing the position of the idler roller 38 following the change in the amount of slack, the stretched state is maintained substantially without slack. Similarly, with respect to fluctuations in the amount of slack in the portion between the medium feed roller 36 and the take-up reel 32 due to the movement of the suction unit 30, the tensioned state is maintained substantially without slack.

  In such a state, the film 10 is fed from the supply reel 31 to the take-up reel 32, and drawing is performed on a portion sucked by the suction table 33 in the middle. The direction in which the film 10 is fed is a direction that is substantially orthogonal to the axial direction of each reel that is substantially parallel to each other and the rotation axis of each roller. A direction parallel to the axial direction of the rotation axis of each reel and each roller is a direction expressed as an X-axis direction, and a feeding direction of the film 10 is a direction expressed as a Y-axis direction.

The head mechanism unit 2 includes a head carriage 22, an X-axis scanning mechanism 11, and a curing unit 6.
The X-axis scanning mechanism 11 includes a pair of an X-axis guide rail 11a, an X-axis slider 11b, and a support column base 11d, and further includes four guide rail support columns 11c.
A pair of support column bases 11d and 11d are arranged on the both sides of the suction table 33 in the X-axis direction, respectively, and are arranged at positions that sandwich the pair of Y-axis guide rails 42a and 42a. It is installed. A maintenance device unit 5 is disposed between the one Y-axis guide rail 42a and the support column base 11d.

  Two guide rail support columns 11c are erected on one support column base 11d, one at each end in the Y-axis direction of the support column base 11d. One X-axis guide rail 11a is passed to a guide rail support column 11c erected on the supply reel 31 side end of the support column base 11d, and above the suction table 33 in the X-axis direction. It is extended. The other X-axis guide rail 11a is passed to the guide rail support column 11c erected on the end of the support column base 11d on the take-up reel 32 side, and above the suction table 33, the X axis Extends in the direction.

  The X-axis slider 11b is supported by the X-axis guide rail 11a via the X-axis drive motor so that it can slide in the X-axis direction and can be held at an arbitrary position. One end of a bridge plate 27 of the head carriage 22 is fixed to the X-axis slider 11b supported on each of the two X-axis guide rails 11a. The bridge plate 27 having both ends fixed to the X-axis slider 11b is supported by the X-axis slider 11b and passed between the two X-axis guide rails 11a. The bridge plate 27 is slidable in the X-axis direction along the X-axis guide rail 11a by the X-axis drive motor, and can be held at an arbitrary position in the X-axis direction.

  The head carriage 22 includes a bridge plate 27, a sub-carriage 28, and a head unit 21. The subcarriage 28 is suspended from the approximate center of the bridge plate 27. The head unit 21 is fixed below the sub-carriage 28. In the droplet discharge head 20 provided in the head unit 21, a nozzle substrate 25 (see FIG. 2) on which discharge nozzles 24 (see FIG. 2) are formed is held in a state where the suction surface 33a of the suction table 33 faces.

  The imaging camera 52 provided in the supply / discharge mechanism 3 is fixed to the X-axis guide rail 11a via a support member (not shown). The imaging camera 52 is installed so as to be able to photograph the suction table 33 side, and can photograph a range including the end in the X-axis direction of the film 10 sent by the supply / discharge mechanism unit 3.

The curing unit 6 includes a support frame (not shown), a UVLED (Ultraviolet Light Emitting Diode) 61a, an LED housing 62a, a UVLED 61b, and an LED housing 62b. The UVLED 61a and the UVLED 61b are LEDs that emit ultraviolet rays.
The LED housing 62a is fixed to the side surface of the sub-carriage 28 on the main scanning direction (X-axis direction) side via a support frame. UVLED 61a is being fixed to LED housing 62a in the state which inject | emits an ultraviolet-ray to the adsorption | suction surface 33a side. The UVLED 61b and the LED housing 62b are fixed to the side surface of the sub-carriage 28, similarly to the UVLED 61a and the LED housing 62a, on the opposite side of the UVLED 61a and the LED housing 62a in the X-axis direction (main scanning direction). That is, the curing unit 6 is disposed in a substantially symmetrical state with respect to the head unit 21 on both sides of the head unit 21 in the X-axis direction (main scanning direction). The curing unit 6 is moved in the main scanning direction integrally with the head unit 21 by the X-axis scanning mechanism 11.

The X-axis scanning mechanism 11 scans the droplet discharge head 20 of the head unit 21 in the X-axis direction, and the Y-axis scanning mechanism 42 scans the portion of the film 10 that is sucked and held by the suction table 33 in the Y-axis direction. As a result, the discharge nozzle 24 of the droplet discharge head 20 can face the substantially entire surface of the portion of the film 10 held by suction on the suction table 33. Similarly, the UVLED 61a and the UVLED 61b can face the substantially entire surface of the portion of the film 10 held by suction on the suction table 33.
The X-axis scanning mechanism 11 corresponds to main scanning means. The Y-axis scanning mechanism 42 corresponds to the sub scanning unit.

  The drawing target portion of the film 10 sucked and held on the suction table 33 is moved to the discharge position in the Y-axis direction and stopped, and the functional liquid for drawing is liquidated in synchronization with the movement of the head unit 21 in the X-axis direction. It is discharged as a drop. In parallel, the curing unit 6 provided in parallel with the head unit 21 irradiates the functional liquid discharged and landed on the drawing target portion with ultraviolet rays.

By controlling main scanning for moving the head unit 21 in the X-axis direction and line feed (sub-scanning) for moving the film 10 sucked and held by the suction table 33 in the Y-axis direction, the suction surface 33a of the suction table 33 is controlled. The head unit 21 is made to oppose to an arbitrary position on the film 10 adsorbed onto the film 10. At the same time, it is possible to perform desired drawing or the like by landing droplets of the functional liquid discharged from the droplet discharge head 20 of the head unit 21. In parallel, the drawn image or the like can be substantially fixed by irradiating the functional liquid constituting the image with ultraviolet rays from the curing unit 6 arranged in parallel with the head unit 21 and substantially curing the functional liquid.
The head mechanism unit 2 and the Y-axis scanning mechanism 42 correspond to a drawing unit.

<Droplet ejection head and head unit>
Next, the droplet discharge head 20 and the head unit 21 will be described with reference to FIG. FIG. 2 is a diagram illustrating a schematic configuration of the droplet discharge head and the head unit. FIG. 2A is an external perspective view showing a schematic configuration of the droplet discharge head, and FIG. 2B is a plan view showing a schematic configuration of the head unit. The axial directions of the X, Y, and Z axes shown in FIG. 2 are the axial directions of the X, Y, and Z axes shown in FIG. 1 when the head unit 21 is mounted on the drawing apparatus 1. Is consistent with

  As illustrated in FIG. 2A, the droplet discharge head 20 includes a nozzle substrate 25. In the nozzle substrate 25, two rows of nozzle rows 24A in which a large number of discharge nozzles 24 are arranged in a substantially straight line are formed. The functional liquid is ejected as droplets from the ejection nozzle 24 and landed on a drawing object or the like at an opposing position, thereby arranging the functional liquid at the position. The nozzle row 24A extends in the Y-axis direction shown in FIG. 1 in a state where the droplet discharge head 20 is mounted on the drawing apparatus 1. In the nozzle row 24A, the discharge nozzles 24 are arranged at equal nozzle pitches, and the position of the discharge nozzle 24 is shifted by a half nozzle pitch in the Y-axis direction between the two nozzle rows 24A. Therefore, as the liquid droplet ejection head 20, functional liquid droplets can be arranged at half nozzle pitch intervals in the Y-axis direction.

  As shown in FIG. 2B, the head unit 21 has a unit plate 23 and nine droplet discharge heads 20 mounted on the unit plate 23. The droplet discharge head 20 is fixed to the unit plate 23 via a head holding member (not shown). In the fixed droplet discharge head 20, the head body is loosely fitted in a hole (not shown) formed in the unit plate 23, and the nozzle substrate 25 is located at a position protruding from the surface of the unit plate 23. . FIG. 2B is a view as seen from the nozzle substrate 25 side. The nine droplet ejection heads 20 are divided in the Y-axis direction to form three groups of head groups 20A each having three droplet ejection heads 20 each. The nozzle row 24 </ b> A of each droplet discharge head 20 extends in the Y-axis direction when the head unit 21 is attached to the drawing apparatus 1.

  The three droplet discharge heads 20 included in one head set 20A are more than the discharge nozzles 24 at the ends of one droplet discharge head 20 of the droplet discharge heads 20 adjacent to each other in the Y-axis direction. The discharge nozzle 24 at the end of one of the droplet discharge heads 20 is disposed at a position where it is shifted by a half nozzle pitch. In the three droplet discharge heads 20 included in the head set 20A, if the positions of all the discharge nozzles 24 in the X-axis direction are the same, the discharge nozzles 24 are arranged at equal intervals of a half nozzle pitch in the Y-axis direction. In other words, at the same position in the X-axis direction, the droplets ejected from the ejection nozzles 24 constituting each nozzle row 24A included in each droplet ejection head 20 are arranged at equal intervals in the Y-axis direction by design. To land on a straight line.

  The six nozzle rows 24A included in the three droplet discharge heads 20 included in one head set 20A can be handled as one nozzle row. The nozzle row has, for example, 180 times six times and 1080 discharge nozzles 24, the nozzle pitch in the Y-axis direction is 70 μm, and the distance between the centers of the discharge nozzles 24 at both ends in the Y-axis direction (nozzle row) Length) is about 75.5 mm. Since the droplet discharge heads 20 overlap with each other in the Y-axis direction, the head set 20A is configured in a stepwise manner in the X-axis direction.

  The three head sets 20A included in the head unit 21 are arranged at positions where the nozzle arrays that can be regarded as one nozzle array included in each of the head units 21 are shifted by a half nozzle pitch of the nozzle array 24A in the Y-axis direction. . In other words, each head unit 21 has the other of the droplet discharge heads 20 constituting the adjacent head set 20A with respect to the discharge nozzle 24 at the end of the droplet discharge head 20 in one head set 20A. The discharge nozzle 24 at the end of the droplet discharge head 20 in the head set 20A is disposed at a position shifted by a half nozzle pitch in the Y-axis direction.

  The 18 nozzle rows 24A included in the nine droplet discharge heads 20 in the three head sets 20A provided in one head unit 21 can be handled as one nozzle row. The nozzle row is referred to as “unit nozzle row 240A”. The unit nozzle row 240A has, for example, 180, 18 times, 3240 discharge nozzles 24, the nozzle pitch in the Y-axis direction is 70 μm, and the distance between the centers of the discharge nozzles 24 at both ends in the Y-axis direction (nozzle) The column length) is about 226.7 mm. That is, when one droplet is discharged from the discharge nozzle 24 of one head unit 21 and landed so that the X-axis direction is at the same position, a straight line is formed in which 3240 points are connected at a pitch interval of 70 μm.

<Media feed roller>
Next, correction of positional deviation of the film 10 using the medium feeding roller 36 and the medium feeding roller 36 will be described with reference to FIG. FIG. 3 is an explanatory diagram showing the configuration of the medium feeding roller and the configuration for performing the correction of the positional deviation of the film. The axial direction of the X axis shown in FIG. 3 coincides with the axial direction of the X axis shown in FIG. 1 when the medium feeding roller 36 is attached to the drawing apparatus 1.

  As shown in FIG. 3, the medium feeding roller 36 includes a roller portion 361, a roller portion 362, a crown member 363, a locking shaft 364, a crown motor 365, a ball screw 367, a screw bearing 371, a screw And a bearing 372.

The roller part 361 and the roller part 362 have a substantially cylindrical outer shape. The crown member 363 has a cylindrical shape with a central portion in the axial direction having a larger diameter than the end portion, and has a substantially barrel shape. The outer diameters at both ends of the crown member 363 are substantially the same as the outer diameters of the roller part 361 and the roller part 362. The central part of the crown member 363 has a larger diameter than the outer diameters of the roller part 361 and the roller part 362.
The roller part 361, the crown member 363, and the roller part 362 are arranged in this order at relative positions where the central axes of the columnar shape and the barrel shape are coaxial. A central axis having a columnar shape or a barrel shape, which is a common axis among the roller portion 361, the crown member 363, and the roller portion 362, is referred to as a feed roller shaft.

One end of the locking shaft 364 is fixed to the roller portion 361, and the other end is fixed to the roller portion 362. The medium feed roller 36 includes a plurality of locking shafts 364, and the roller portion 361 and the roller portion 362 are integrated with each other via a plurality of locking shafts 364 each having one end fixed thereto. The axial direction of the locking shaft 364 is the same as the axial direction of the feed roller shaft. The crown member 363 is locked to the plurality of locking shafts 364 so as to be slidable in the axial direction. The crown member 363 is locked to the plurality of locking shafts 364, thereby stopping relative movement in the circumferential direction. . The crown member 363 is movable between the roller portion 361 and the roller portion 362 in the axial direction of the feed roller shaft (the direction of the arrow indicated by a in FIG. 3).
The roller part 361 and the roller part 362 are rotatably supported at opposite ends connected to each other, and the roller part 361 is connected to a medium feed motor (not shown). The roller portion 361, the crown member 363, and the roller portion 362 are integrally rotated around the axis of the feed roller shaft by the medium feed motor. The feed roller axis is the rotation center axis of the medium feed roller 36, and as described above, the axial direction of the rotation center axis of the medium feed roller 36 is the X-axis direction.

  The ball screw 367 includes a ball screw shaft 368 and a ball screw nut 369. The ball screw nut 369 is fixed to the center portion of the crown member 363. A ball screw shaft 368 is screwed into the ball screw nut 369. Both ends of the ball screw shaft 368 are rotatable around an axis by a screw bearing 371 or a screw bearing 372, and are prohibited from moving in the axial direction and are stopped. The screw bearing 371 is fixed to the roller portion 361 and the screw bearing 372 is fixed to the roller portion 362, and the ball screw shaft 368 is supported in parallel with the axial direction of the plurality of locking shafts 364.

  When the ball screw shaft 368 is rotated, the ball screw nut 369 is moved in the axial direction of the ball screw shaft 368. The axial direction of the ball screw shaft 368 is the axial direction of the feed roller shaft, the ball screw nut 369 is fixed to the crown member 363, and the crown member 363 is supported so as to be movable in the axial direction of the feed roller shaft. For this reason, when the ball screw shaft 368 is rotated, the crown member 363 is moved in the axial direction of the feed roller shaft.

The crown motor 365 is fixed inside the roller portion 361. An output shaft 366 of the crown motor 365 is connected to the ball screw shaft 368. By driving the crown motor 365, the ball screw shaft 368 can be rotated and the ball screw nut 369 can be moved. That is, by driving the crown motor 365, the ball screw nut 369 can be moved and the crown member 363 can be moved. Moreover, the position with respect to the roller part 361 and the roller part 362 of the crown member 363 can be maintained by stopping the crown motor 365 and maintaining the stopped state.
Each of the roller part 361 and the roller part 362 corresponds to a sub-roller body, and the roller part 361 and the roller part 362 correspond to a first roller body. The crown member 363 corresponds to the second roller body. A portion where the diameter of the central portion of the crown member 363 is large corresponds to a large diameter portion. The ball screw 367 and the crown motor 365 correspond to the large diameter portion moving means.

  The crown motor 365 is electrically connected to a crown position control unit 81 provided in the drawing apparatus control unit 8. The crown motor 365 is driven by being controlled by the crown position control unit 81.

  The imaging camera 52 provided in the supply / discharge mechanism unit 3 is also electrically connected to the crown position control unit 81. As described above, the imaging camera 52 can capture a range including the end in the X-axis direction of the film 10 sent by the supply / discharge mechanism unit 3. In a state where the suction table 33 is located at a position facing the head unit 21, the imaging camera 52 holds the end of the film 10 stretched between the supply roller 34 and the medium feeding roller 36 in the X-axis direction. Shooting is possible.

When the film 10 is fed by driving the supply roller 34 and the medium feed roller 36, the crown position control unit 81 is in a state of being stretched between the supply roller 34 and the medium feed roller 36 by the imaging camera 52. The end of the film 10 in the X-axis direction is photographed. The position of the end of the film 10 is acquired from the photographed image. The obtained position of the end is compared with the reference position to determine whether or not there is a positional shift in the X-axis direction due to meandering of the film 10 or the like.
If a positional shift has occurred, the position of the film 10 is corrected. The position of the film 10 is corrected by adjusting the position of the crown member 363 in the X-axis direction. As described above, the crown motor 365 is driven to move the crown member 363 via the ball screw shaft 368. The appropriate position of the crown member 363 with respect to the amount of positional deviation is preferably obtained for each member to be transported by experiment or the like.
The imaging camera 52 corresponds to a medium position detection unit. The crown position control unit 81 corresponds to position control means.

<Other media feed rollers>
Next, correction of the positional deviation of the film 10 using the medium feed roller 380 different from the medium feed roller 36 and the medium feed roller 380 will be described with reference to FIG. FIG. 4 is an explanatory diagram showing the configuration of the medium feed roller and the configuration for carrying out correction of the positional deviation of the film. The axial direction of the X axis shown in FIG. 4 coincides with the axial direction of the X axis shown in FIG. 1 in a state where the medium feeding roller 380 is attached to the same drawing apparatus as the drawing apparatus 1.

As shown in FIG. 4, the medium feeding roller 380 includes a roller portion 381, a crown ring 383, and a crown ring 384.
The roller part 381 has a cylindrical outer shape. The outer diameter of the cylinder is substantially equal to the outer diameter of the roller portion 361 and the roller portion 362 of the medium feeding roller 36. A roller groove 382 and a supply / exhaust flow path 389 are formed in the roller portion 381.
The roller groove 382 is formed on the side surface of the columnar shape by rounding the column in the circumferential direction. Two roller grooves 382 are formed in the roller portion 381. The two roller grooves 382 are respectively formed at positions symmetrical to each other with respect to the center position in the axial direction of the roller portion 381.
The supply / exhaust flow path 389 is a flow path through which gas can flow, and is formed inside the roller portion 381. Both ends of the air supply / exhaust flow path 389 are open to the bottom of the roller groove 382 or the end surface of the roller portion 381, respectively. The supply / exhaust flow path 389 is formed with one supply / exhaust flow path 389 communicating with each of the two roller grooves 382.

The crown ring 383 and the crown ring 384 are made of a rubber-like elastic body, have a ring shape, and have a ring-shaped hollow portion 385 or a hollow portion 386 formed therein. The crown ring 383 and the crown ring 384 are fitted into the roller groove 382.
At the position corresponding to the opening of the supply / exhaust flow path 389 opened at the bottom of the roller groove 382 of the crown ring 383 and the crown ring 384 fitted into the roller groove 382, there is a connection hole communicating with the hollow portion 385 or the hollow portion 386. Is formed. The connection hole and the air supply / exhaust flow path 389 are connected via a relay member (not shown), and the hollow portion 385 or the hollow portion 386 and the air supply / exhaust flow path 389 communicate with each other.

  The other end of the air supply / exhaust flow path 389 is connected to one end of the pressure pipe 388 on the end surface of the roller portion 381 via a connection member whose connection portion is rotatable. The other end of the pressure pipe 388 is connected to the pressure pump 387.

By sending the compressed gas from the pressure pump 387 to the hollow part 385 or the hollow part 386 via the pressure pipe 388 and the supply / exhaust flow path 389, the pressure in the hollow part 385 or the hollow part 386 can be increased. By increasing the pressure in the hollow portion 385 or the hollow portion 386, the crown ring 383 or the crown ring 384 can be expanded to enlarge the ring. The crown ring 383 and the crown ring 384 are fitted into the roller groove 382, and the inner diameter of the ring is regulated by hitting the bottom of the roller groove 382, so that the outer diameter of the ring is increased. By increasing the outer diameter of the ring, the outer circumferences of the crown ring 383 and the crown ring 384 protrude from the cylindrical surface of the roller portion 381.
The roller unit 381 corresponds to the first roller body. The roller groove 382 corresponds to the groove portion. The crown ring 383 and the crown ring 384 correspond to the second roller body, and each of the crown ring 383 and the crown ring 384 corresponds to an annular member. The pressure pump 387 corresponds to the large diameter portion moving means.

  The pressure pump 387 is electrically connected to the crown ring control unit 82 included in the drawing device control unit 108. The pressure pump 387 is driven by being controlled by the crown ring controller 82.

  The imaging camera 52 provided in the supply / discharge mechanism unit 3 is also electrically connected to the crown ring control unit 82. As described above, the imaging camera 52 can capture a range including the end in the X-axis direction of the film 10 sent by the supply / discharge mechanism unit 3. In a state where the suction table 33 is located at a position facing the head unit 21, the imaging camera 52 holds the end of the film 10 stretched between the supply roller 34 and the medium feed roller 380 in the X-axis direction. Shooting is possible.

When feeding the film 10 by driving the supply roller 34 and the medium feed roller 380, the crown ring control unit 82 is in a state of being stretched between the supply roller 34 and the medium feed roller 380 by the imaging camera 52. The end of the film 10 in the X-axis direction is photographed. The position of the end of the film 10 is acquired from the photographed image. The obtained position of the end is compared with the reference position to determine whether or not there is a positional shift in the X-axis direction due to meandering of the film 10 or the like. If a positional shift has occurred, the position of the film 10 is corrected. The position of the film 10 is corrected by adjusting the outer diameters of the crown ring 383 and the crown ring 384. Appropriate values of the outer diameters of the crown ring 383 and the crown ring 384 with respect to the displacement amount are preferably obtained for each member to be transported by experiments or the like.
The imaging camera 52 corresponds to a medium position detection unit. The crown ring control unit 82 corresponds to position control means.

  A so-called crown roller is formed by the outer circumference of the crown ring 383 or the crown ring 384 projecting from the cylindrical surface of the roller portion 381. The crown roller has a function of exerting an action on the film 10 by the crown ring 383 or the crown ring 384 protruding from the cylindrical surface of the roller portion 381 functioning like a crown portion. The medium feed roller 380 has a function of exerting on the film 10 an action obtained by synthesizing the action of the crown ring 383 or the crown ring 384 functioning like a crown portion.

  For example, as in the crown ring 383 and the crown ring 384 shown in FIG. 4A, the outer circumferences of the crown ring 383 and the crown ring 384 are increased by similarly increasing the pressure in the hollow portion 385 and the hollow portion 386. Are projected evenly from the cylindrical surface of the roller portion 381. In this case, the medium feeding roller 380 functions like a crown roller in which the portion with the largest outer diameter of the crown portion is located at the center between the crown ring 383 and the crown ring 384.

For example, as in the crown ring 383 and the crown ring 384 shown in FIG. 4B, the outer diameter and the crown of the ring of the crown ring 383 are changed by making the pressures in the hollow portion 385 and the hollow portion 386 different from each other. The outer diameters of the rings 384 are different from each other. Thereby, the protrusion amount from the cylindrical surface of the roller part 381 is made different between the outer periphery of the ring of the crown ring 383 and the outer periphery of the ring of the crown ring 384. In this case, the medium feeding roller 380 has a crown at a position where the amount of protrusion from the outer peripheral cylindrical surface of the crown ring 383 and the amount of protrusion from the outer peripheral cylindrical surface of the crown ring 384 are proportionally divided. It functions like a crown roller where the part with the largest outer diameter is located.
In the example shown in FIG. 4B, the protrusion amount of the crown ring 384 is very small, and almost only the crown ring 383 protrudes. In this case, the medium feed roller 380 functions as a crown roller in which the crown ring 383 is a crown portion.

  For example, as in the crown ring 383 and the crown ring 384 shown in FIG. 4C, the outer diameters of the crown ring 383 and the crown ring 384 are reduced by reducing the pressure in the hollow portion 385 and the hollow portion 386. The outer diameter of the roller portion 381 is made smaller. In this case, the medium feeding roller 380 functions as a roller having a cylindrical outer shape.

  An appropriate value of the outer diameters of the crown ring 383 and the crown ring 384 with respect to the positional deviation amount of the conveyed member is preferably obtained for each conveyed member by experiments or the like.

Hereinafter, the effect by embodiment is described. According to the present embodiment, the following effects can be obtained.
(1) The medium feeding roller 36 includes a crown member 363, a roller portion 361, and a roller portion 362, and the central portion of the crown member 363 disposed between the roller portion 361 and the roller portion 362 is a roller portion 361. Further, the diameter is larger than the outer diameter of the roller portion 362. With this configuration, the medium feeding roller 36 functions as a so-called crown roller. The medium feeding roller 36 can transport the film 10 to be transported in a state where the central portion of the film 10 in the width direction is in contact with the center portion of the crown member 363.

  (2) In the medium feed roller 36, the crown member 363 is movable between the roller portion 361 and the roller portion 362 in the axial direction of the feed roller shaft. With this configuration, the position of the film 10 in the width direction can be moved by moving the crown member 363 in the axial direction. Thereby, the position of the width direction of the film 10 can be moved to arbitrary positions.

  (3) In the medium feed roller 36, the position of the film 10 in the width direction can be moved by moving the crown member 363 in the axial direction. Compared to the configuration in which the entire medium feeding roller such as the medium feeding roller 36 is moved, the object to be moved is small, and therefore it can be easily moved. In addition, the driving source and the moving mechanism for moving can be reduced in size. By reducing the size of the drive source and the moving mechanism, the area necessary for installation can be suppressed and the arrangement can be facilitated.

  (4) The crown position control unit 81 uses the imaging camera 52 to photograph the end in the X-axis direction of the film 10 stretched between the supply roller 34 and the medium feeding roller 36. The position of the edge of the film 10 can be acquired from the photographed image, and the presence or absence of deviation from a predetermined position can be detected.

  (5) The medium feed roller 380 includes a roller portion 381, a crown ring 383, and a crown ring 384, and the outer diameter of the crown ring 383 or the crown ring 384 may be larger than the outer diameter of the roller portion 381. it can. By projecting the crown ring 383 or the crown ring 384 having a large outer diameter from the roller portion 381, the medium feeding roller 380 can function as a crown roller in which the crown ring 383 or the crown ring 384 is a crown portion. .

  (6) The outer diameter of the crown ring 383 or the crown ring 384 that functions as the crown portion can be changed. By changing the outer diameter of the crown portion, the characteristics of the medium feeding roller 380 as the crown roller can be changed. it can. Even for a transported medium having different characteristics such as a member having a different thickness or a member having different rigidity other than a film, a crown roller corresponding to the characteristics of the transported medium can be formed.

(7) The position of the crown portion in the medium feed roller 380 as the crown roller is determined by the relationship between the outer diameter of the crown ring 383 that functions like the crown portion and the outer diameter of the crown ring 384. By adjusting the outer diameter of the crown ring 383 and the outer diameter of the crown ring 384, the position of the crown portion in the medium feeding roller 380 as the crown roller can be adjusted.
The medium feed roller 380 can transport the film 10 to be transported in a state in which the central portion of the film 10 in the width direction is in contact with the position of the crown portion determined by the crown ring 383 and the crown ring 384.
By adjusting the relationship between the outer diameter of the crown ring 383 and the outer diameter of the crown ring 384, the position of the crown portion determined by the crown ring 383 and the crown ring 384 in the width direction of the film 10 can be moved.

  (8) When drawing on the film 10, the entire drawing area is sucked by the suction table 33. As a result, the drawing area accuracy and the drawing position accuracy are impaired due to the fact that the drawing area of the film 10 is kept flat and a flat state such as a wrinkle is not maintained in the drawing area. Can be suppressed.

  (9) Drawing on the film 10 is performed by sucking the drawing area by the suction table 33, and the line feed is moved in the Y-axis direction by the Y-axis scanning mechanism 42 moving the suction table 33 sucking the drawing area. To implement. As a result, the drawn area is maintained even when a line break occurs, so that the drawing area can be prevented from being deformed due to the line break. Since the force for making a line break is not directly applied to the film 10, it is possible to substantially eliminate the deformation of the drawing area due to the force for making a line break.

  As mentioned above, although preferred embodiment was described referring an accompanying drawing, suitable embodiment is not restricted to the said embodiment. The embodiment can of course be modified in various ways without departing from the scope, and can also be implemented as follows.

  (Modification 1) In the above-described embodiment, the medium feed roller 36 disposed on the downstream side of the drawing region or the medium feed roller 380 used in the same manner as the medium feed roller 36 has a crown roller whose crown position is variable. It was a conveying force transmission means. However, it is not essential that the conveyance force transmitting means is a conveyance roller disposed on the downstream side of the drawing region. For example, the supply roller 34 may be a component of the medium transport mechanism disposed on the upstream side of the drawing region in the medium transport mechanism.

  (Modification 2) In the embodiment described above, the position of the end of the film 10 is detected by photographing the range including the end of the film 10 sent by the supply / discharge mechanism unit 3 using the imaging camera 52. However, it is not essential that the medium position detecting means is an imaging device such as the imaging camera 52. The medium position detection means may use a sensor such as a photo interrupter.

  (Modification 3) In the above embodiment, the drawing on the film 10 is performed by sucking the drawing area by the suction table 33. However, it is not essential that the drawing apparatus includes a holding unit such as the suction table 33 that holds a medium such as the film 10. For example, the drawing may be performed on a portion maintained flat by being stretched between the supply roller 34 and the driven roller 34a and the medium feeding roller 36 and the driven roller 36a.

  (Modification 4) In the said embodiment, the supply / discharge mechanism part 3 provided with the medium feeding roller 36 is an apparatus which comprises the drawing apparatus 1, Comprising: It is an apparatus which conveys and hold | maintains the film 10 which is a drawing medium. there were. However, it is not indispensable that the medium to be transported is a drawing medium, and that the apparatus provided with the transport apparatus including the transport force transmission means is the drawing apparatus. The medium to be conveyed may be continuous paper that is stamped to form a seal or the like. The device provided with the transfer device provided with the transfer force transmission means may be a die cutting device or the like.

  (Modification 5) In the embodiment, the drawing scanning is performed by sucking the drawing area by the suction table 33, and the line feed is sucking the drawing area of the film 10 by the Y-axis scanning mechanism 42. This was implemented by moving the table 33 in the Y-axis direction. However, it is not essential to perform a line feed by moving a holding means such as the suction table 33 holding the drawing medium. The drawing apparatus may be configured to perform a line feed by moving an ejection unit such as the head unit 21.

  (Modification 6) In the above-described embodiment, the supply / discharge mechanism 3 of the drawing apparatus 1 includes the take-up reel 32, and the drawn film 10 is taken up by the take-up reel 32. However, it is not essential for the drawing apparatus to include a take-up reel or to take up the drawn portion of the continuous medium. For example, a configuration of a drawing apparatus and a drawing method may be provided in which a cutting device is provided and a drawn portion is cut into a predetermined length. Alternatively, in a configuration of a transport device or a drawing device, and a transport method or a drawing method in which a die cutting device is provided, only a product portion is punched from a drawn continuous medium, and a portion other than the product is cut or wound. There may be.

  (Modification 7) In the above-described embodiment, as the drawing target, the transport apparatus or drawing apparatus that transports and draws the film 10 as a continuous medium and the transport method or drawing method have been described as examples. However, the drawing target is a film. It is not essential to be a continuous medium such as 10. The drawing target may be a medium such as a so-called cut sheet, in which one drawing target has one drawing area attracted and held by the holding unit. The drawing apparatus may be an apparatus including a transport unit that can supply and discharge the medium to and from the drawing position.

  (Modification 8) In the embodiment, the head mechanism unit 2 of the drawing apparatus 1 includes the head carriage 22 and the X-axis scanning mechanism 11. The head carriage 22 is scanned in the X-axis direction by the X-axis scanning mechanism 11, and the functional liquid is ejected from the ejection nozzle 24 of the droplet ejection head 20 provided in the head carriage 22, thereby drawing on the film 10. However, it is not essential that the drawing apparatus includes a device that moves the discharge nozzle relative to the continuous medium in the main scanning direction. The drawing apparatus may be configured to include a so-called line head in which discharge nozzles are disposed so as to be able to discharge droplets over substantially the entire width of the continuous medium. In this case, the curing unit is preferably provided in the immediate vicinity of the downstream side of the line head in the continuous medium feeding direction. The functional liquid can be cured immediately after being disposed by irradiating ultraviolet rays from a curing unit disposed in the immediate vicinity of the downstream side of the line head.

  (Modification 9) In the above embodiment, the drawing apparatus 1 includes the curing unit 6, but it is not essential that the drawing apparatus includes a curing unit such as the curing unit 6. A drawing apparatus that uses a functional liquid that can realize an appropriate curing speed without requiring curing acceleration and does not perform curing acceleration may be used.

  (Modification 10) In the embodiment, the type of the functional liquid is not particularly described. However, in the drawing apparatus, different types of functional liquids such as different colors may be discharged. Color drawing is also possible by discharging a plurality of types of functional liquids having different colors. The type of functional liquid may include a plurality of head units and may be different for each head unit, may be different for each head group, may be different for each droplet discharge head, or nozzle row Each may be different. Different functional liquids may be ejected from one ejection nozzle to another by using a droplet ejection head that can individually supply functional liquid to each ejection nozzle. In order to perform color drawing, a plurality of head units or droplet discharge heads configured to be able to land, for example, different functional liquids at the same landing position, or a scanning method is used. It is preferable.

  (Modification 11) In the above embodiment, the medium feeding roller 36 includes a ball screw 367 and a crown motor 365 as a large diameter portion moving means for moving a crown member 363 corresponding to the second roller body. It was. The configuration in which the second roller body such as the crown member 363 is moved and held in the axial direction may be another configuration. For example, a linear motor such as a shaft motor can be used.

  (Modification 12) In the above embodiment, the drawing apparatus 1 includes one head unit 21, but it is not essential that the drawing apparatus includes one head unit. Any number of head units may be provided in the drawing apparatus.

  (Modification 13) In the above embodiment, the head unit 21 includes nine droplet discharge heads 20, but it is not essential that the head unit includes nine discharge heads. Any number of ejection heads may be included in the head unit. The head unit may include a plurality of ejection heads or a single ejection head.

  (Modification 14) In the above-described embodiment, the droplet discharge head 20 includes two nozzle rows 24A in which a large number of discharge nozzles 24 are arranged in a substantially straight line. However, how many nozzle rows the discharge head includes. It may be. The positions of the discharge nozzles 24 included in the droplet discharge head 20 are shifted in the extending direction of the nozzle row 24A. However, the discharge heads are discharged at substantially the same position in the extending direction of the nozzle row. The structure provided with two or more nozzles may be sufficient.

  (Modification 15) In the embodiment, the curing unit 6 is configured to be movable together with the head unit 21. However, it is not essential that the curing accelerating means can be moved, nor can the curing accelerating means be moved integrally with the discharge means. A configuration may be employed in which the curing accelerating means is arranged separately from the discharge means.

  (Modification 16) In the embodiment described above, the medium feed roller 380 as the conveying force transmission means includes the crown ring 383 and the crown ring 384 as the annular members. However, it is not essential that the number of the annular members included in the conveying force transmission means including the annular member is two. There may be three or more annular members provided in the conveying force transmission means. The plurality of annular members also function like the crown portion of the crown roller, but by increasing the number of annular members, the position and shape of the crown portion that is also formed by the annular member can be controlled more precisely. Can do.

  DESCRIPTION OF SYMBOLS 1 ... Drawing apparatus, 2 ... Head mechanism part, 3 ... Supply / discharge mechanism part, 8 ... Drawing apparatus control part, 10 ... Film, 20 ... Droplet discharge head, 21 ... Head unit, 24 ... Discharge nozzle, 24A ... Nozzle row , 31 ... supply reel, 32 ... take-up reel, 33 ... suction table, 34 ... supply roller, 36 ... medium feeding roller, 52 ... imaging camera, 81 ... crown position control unit, 82 ... crown ring control unit, 108 ... drawing Device control unit, 361, 362 ... roller unit, 363 ... crown member, 364 ... locking shaft, 365 ... crown motor, 368 ... ball screw shaft, 369 ... ball screw nut, 371, 372 ... screw bearing, 380 ... medium feed Roller, 381 ... Roller part, 382 ... Roller groove, 383, 384 ... Crown ring, 385, 386 ... Hollow part, 387 ... Pressure pump, 3 8 ... pressure tube 389 ... supply and exhaust passage.

Claims (10)

A transport device that includes transport force transmitting means for contacting a medium and transmitting a transport force, and transports the medium in a direction defined by the transport force,
The conveying force transmission means is
A first roller body rotated about a rotation axis by a drive source;
A second roller body having an outer diameter larger than the outer diameter of the first roller body, and being rotated integrally with the first roller body around the rotation axis;
And a large-diameter portion moving means for moving the position of the large-diameter portion in the axial direction of the rotating shaft. Medium position detecting means for detecting the position of the edge of the medium in a direction substantially parallel to the surface direction of the medium and substantially perpendicular to the conveyance direction of the medium;
Position control means for controlling the position of the large diameter portion in the axial direction of the rotating shaft by controlling the large diameter portion moving means based on the detection result of the medium position detection means. The transfer device according to claim 1. The first roller body has a columnar shape with substantially the same outer diameter, and includes two sub-roller bodies that can rotate integrally around the rotation shaft,
The second roller body is disposed between the two sub roller bodies of the two sub roller bodies, and can rotate integrally with the sub roller body around the rotation shaft, In the axial direction of the rotation shaft, it is movable relative to the sub-roller body,
The large-diameter portion moving means moves the second roller body relative to the sub-roller body in the axial direction of the rotation shaft and holds the second roller body at an arbitrary position. The transport apparatus according to 1 or 2. The first roller body has a substantially cylindrical shape, and has a plurality of grooves formed over the entire circumference in the circumferential direction of the outer peripheral wall.
The second roller body includes a plurality of annular members having an annular hollow portion and an annular outer shape, and each annular member of the plurality of annular members is formed of a rubber-like elastic body, It fits into each groove of the plurality of grooves,
The conveying device according to claim 1 or 2, wherein the large-diameter portion moving means is connected to the hollow portion and can adjust the pressure in the hollow portion for each of the annular members. . A first roller body that is rotated about a rotation axis by a drive source; a large diameter portion having an outer diameter larger than the outer diameter of the first roller body; and the first roller body around the rotation axis; A conveying means for conveying the medium in a direction defined by the conveying force by transmitting a conveying force by bringing a conveying force transmitting means comprising a second roller body rotated integrally with the medium into contact with the medium; A transport method for transporting the medium,
A conveying method comprising: a large-diameter portion position adjusting step of adjusting a position of the large-diameter portion in the conveying force transmitting means in the axial direction of the rotation shaft. A medium position detecting step of detecting a position of an end of the medium in a direction substantially parallel to a surface direction of the medium and substantially perpendicular to a conveyance direction of the medium;
6. The transport method according to claim 5, wherein, in the large-diameter portion position adjusting step, the position of the large-diameter portion in the rotation axis direction is adjusted based on a detection result in the medium position detecting step. . An ejection means for ejecting the liquid material is provided, and the liquid material ejected from the ejection means is landed on the drawing medium, whereby the liquid material is disposed on the drawing medium, and an image made of the liquid material is obtained. A drawing comprising drawing means for drawing, and conveying means for conveying a conveying force by contacting the drawing medium, and conveying means for conveying the drawing medium in a direction defined by the conveying force A device,
The conveying force transmission means is
A first roller body rotated about a rotation axis by a drive source;
A second roller body having an outer diameter larger than the outer diameter of the first roller body, and being rotated integrally with the first roller body around the rotation axis;
A drawing apparatus comprising: a large-diameter portion moving means for moving the position of the large-diameter portion in the axial direction of the rotation shaft. Medium position detecting means for detecting the position of the end of the drawing medium in a direction substantially parallel to the surface direction of the drawing medium and substantially perpendicular to the conveyance direction of the drawing medium;
Position control means for controlling the position of the large diameter portion in the axial direction of the rotating shaft by controlling the large diameter portion moving means based on the detection result of the medium position detection means. The drawing apparatus according to claim 7. A first roller body that is rotated about a rotation axis by a drive source; a large diameter portion having an outer diameter larger than the outer diameter of the first roller body; and the first roller body around the rotation axis; The conveying force is transmitted by bringing a conveying force transmission means provided with a second roller body rotated integrally with the drawing medium, and the drawing medium is conveyed in a direction defined by the conveying force. The apparatus includes a discharge unit that transfers the drawing medium using a transfer unit and discharges the liquid material, and causes the liquid material discharged from the discharge unit to land on the drawing medium, thereby allowing the liquid material to be applied to the drawing medium. A drawing method for drawing using a drawing means arranged on a drawing medium for drawing an image made of the liquid material,
A drawing method comprising: a large-diameter portion position adjusting step of adjusting a position of the large-diameter portion in the conveying force transmitting means in the axial direction of the rotation shaft. A medium position detecting step of detecting a position of an end of the drawing medium in a direction substantially parallel to a surface direction of the drawing medium and substantially perpendicular to a conveyance direction of the drawing medium;
The drawing method according to claim 9, wherein, in the large-diameter portion position adjusting step, a position of the large-diameter portion in the rotation axis direction is adjusted based on a detection result in the medium position detecting step.

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