Conveying device

Abstract

The invention provides a conveying device, which can prevent the generation of tail-chasing sound and medium damage caused by a medium rear-end roller pair. A transport device (for example, an inkjet printing device (1)) is provided with: a roller pair (31) that transports a medium (for example, paper (P)) while sandwiching the medium; a nip guide (70) that holds one roller (for example, a driven roller (31a)) of the roller pair (31) and guides the medium toward the roller pair (31); and a biasing member (e.g., a compression spring (C)) that biases the nip guide (70) and the one roller such that the one roller is pressed against the other roller (e.g., a drive roller (31b)) of the roller pair (31). The nip guide (70) has a guide plate (71) that extends in the width direction (W) of the medium and the transport direction (D) of the medium and guides the medium toward the roller pair (31).

Description

TECHNICAL FIELD

[0001] The present application relates to a conveyance device that conveys a medium. BACKGROUND

[0002] In the past, a method of guiding a paper sheet toward one side while sandwiching the paper sheet and conveying it has been known. For example, a method of guiding the leading end of a paper sheet toward the side of a driven roller, which has a smaller frictional force in a roller pair, has been known (for example, refer to Patent Literature 1). In addition, a method of guiding a sheet using a rib-shaped guide portion arranged on one side, the other side, or the like in the axial direction of the driven roller has also been known (for example, refer to Patent Literature 2).

[0003] Prior art documents

[0004] Patent documents

[0005] Patent Literature 1: Japanese Patent Application Laid-Open No. 05-032350

[0006] Patent Literature 2: Japanese Patent Application Laid-Open No. 2020-040819 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] In addition, when a medium such as a paper sheet is conveyed after image formation, as a countermeasure against retransfer by a roller, in order to make the roller point-contact with the medium, a coated roller coated with fine particles of ceramic or the like, or a mesh roller covered with a fabric is generally used. In addition, in order to prevent paper dust or the like from accumulating in the roller, it is important that the roller have a large concave-convex shape, and the mesh roller is particularly excellent. However, if the concave-convex shape of the roller is made large, the leading end of the medium comes into contact with the web of the roller instead of the pinch point of the roller pair due to the curvature of the conveyance path and the protruding amount of the roller, and there is a tendency that the leading end of the medium is easily damaged.

[0009] In the method of guiding the leading end of a paper sheet toward the side of a driven roller, which has a smaller frictional force in a roller pair, as described above, considering the variation of components, it is necessary to guide the leading end of the paper sheet to the side of the driven roller to a large extent, and there is a risk that the leading end of the paper sheet comes into contact with the web of the roller and generates a bumping sound. In addition, such a bumping sound is particularly generated significantly in a mesh roller, a curved conveyance path, but is also generated in a roller having no concave-convex shape on the surface, a straight conveyance path.

[0010] Further, if the medium is guided by the guide portion in a rib shape, the guide portion is easily worn due to a small number of contact surfaces between the medium and the guide portion, and durability and strength are low. Moreover, if the thickness of the guide portion in the rib shape in the thickness direction of the medium is increased in order to improve the durability and the strength, the medium cannot be guided in the vicinity of the nip region of the pair of rollers in a case where the position of the guide portion in the axial direction of the pair of rollers is set to the same position as the pair of rollers. Thus, it is not possible to prevent the medium from contacting the roller flanks to generate the bumping sound and damage to the medium as described above.

[0011] An object of the present application is to provide a conveying device capable of preventing generation of a bumping sound and damage to a medium caused by the medium bumping a pair of rollers.

[0012] Solution to the problem

[0013] In one embodiment, the conveying device includes a pair of rollers that conveys a medium while sandwiching the medium, a nip guide that holds one of the pair of rollers and guides the medium toward the pair of rollers, and a force applying member that applies a force to the nip guide and the one of the pair of rollers so that the one of the pair of rollers is pressed against the other of the pair of rollers, the nip guide having a guide plate that extends in a width direction of the medium and a conveying direction of the medium and guides the medium toward the pair of rollers.

[0014] Effects of the invention

[0015] According to the above-described embodiment, it is possible to prevent generation of a bumping sound and damage to a medium caused by the medium bumping a pair of rollers. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view showing an internal configuration of an inkjet printing device according to an embodiment.

[0017] Figure 2 is a block diagram showing a control configuration of an inkjet printing device according to an embodiment.

[0018] Figure 3 is a sectional view showing a curved conveying path according to an embodiment.

[0019] Figure 4 is a perspective view showing a nip guide and a driven roller according to an embodiment.

[0020] Figure 5 is a perspective view showing a driven roller according to an embodiment.

[0021] Figure 6 is a perspective view showing a nip guide according to an embodiment.

[0022] Figure 7 is Figure 3Enlarged view of Part VII.

[0023] Figure 8 This is a perspective view showing a clamping guide and a driven roller with bearings according to one embodiment.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Inkjet printing unit; 2. Unit housing; 10. External paper feeding section; 20. Internal paper feeding section; 31. Roller pair; 31a. Driven roller; 31b. Drive roller; 32. Path switching section; 33. Reversing roller pair; 34. Reversing path; 35. 36. Conveyor path; 40. Inkjet head; 50. Printing conveyor section; 60. Paper discharge section; 70. Clamping guide; 71. Guide plate; 72. 73. Support part; 72a, 73a. Shaft receiving recess; 73a-1. Groove; 72b, 73b. Bearing receiving recess; 73b-1. Groove; 74. Base part; 75. Reinforcing rib; A. Roller shaft; B. Bearing; C. Compression spring; D. Conveying direction; N. Clamping area; P. Paper; S. Space; W. Width direction. Detailed Implementation

[0026] Hereinafter, an example of the conveying device will be set as an inkjet printing apparatus, and an embodiment of the conveying device of the present invention will be described with reference to the accompanying drawings.

[0027] Figure 1 and Figure 2 It is a front view showing the internal structure of the inkjet printing device 1 and a block diagram showing the control structure.

[0028] in addition, Figure 1 and the following Figures 3 to 8 The directions shown (up / down, front / back, left / right) are for illustrative purposes only. For example, up / down is the vertical direction, while front / back and left / right are the horizontal directions.

[0029] like Figure 1 As shown, the inkjet printing apparatus 1 includes an apparatus housing 2, an external paper feeding unit 10, an internal paper feeding unit 20, an inkjet head 40, a printing transport unit 50, and a paper discharge unit 60. Furthermore, as... Figure 2 As shown, the inkjet printing apparatus 1 also includes a control unit 81, a storage unit 82, an interface unit 83, and a transport drive unit 84.

[0030] exist Figure 1In the present embodiment, the paper P is one example of a medium, and as the medium, a sheet-shaped article formed of a raw material other than paper, an article having a fold-back portion such as an envelope, or the like can be used. Therefore, in the present specification, paper feeding is one example of feeding, and paper discharge is one example of discharging. Thus, paper feeding can be replaced with feeding, paper discharge can be replaced with discharging, and paper can be replaced with a medium.

[0031] Further, in the present embodiment, the inkjet printing device 1 is described as one example of a conveyance device, but the conveyance device can be any device that conveys a paper P (medium). Therefore, the conveyance device of the present embodiment can be a processing device that has a processing section that performs processing other than image formation such as inspection of a paper P, a conveyance device that does not have such a processing section, or the like.

[0032] The external paper feeding section 10 has a paper feeding tray 11, a paper feeding roller 12, and a separation plate 13. The external paper feeding section 10 is one example of a feeding section, and is disposed, for example, in a manner exposed to the outside of the device housing 2 to feed a paper P to the inside of the device housing 2. The paper P before image formation is loaded on the paper feeding tray 11. The paper feeding roller 12 is disposed in two, for example, in the conveyance direction D of the paper P, and feeds the uppermost paper P among the plurality of papers P loaded on the paper feeding tray 11. The separation plate 13 sandwiches the paper P between the paper feeding roller 12 and separates the paper P one by one.

[0033] The internal paper feeding section 20 has a first paper feeding section 21, a second paper feeding section 22, and a third paper feeding section 23. The first paper feeding section 21, the second paper feeding section 22, and the third paper feeding section 23 are disposed in the inside of the device housing 2 in this order from the top. The first paper feeding section 21, the second paper feeding section 22, and the third paper feeding section 23 each have a paper feeding tray 21a, 22a, 23a that loads a paper P before image formation, and a paper feeding roller 21b, 22b, 23b that feeds the uppermost paper P among the plurality of papers P loaded on the paper feeding tray 21a, 22a, 23a.

[0034] The inkjet printing device 1 further has a plurality of roller pairs 31, a path switching section 32, a direction changing roller pair 33, a direction changing path 34, Figure 3 a conveyance passage 35, 36 as shown.

[0035] The roller pair 31 conveys the paper P while sandwiching the paper P, for example, in the conveyance path of the paper P in the inside of the device housing 2.

[0036] The path switching section 32 switches the transport path of the paper P on which image formation has been performed by the inkjet head 40 to a path toward the paper discharge section 60 and a direction-changing path 34. The path switching section 32 is, for example, a flipper. The direction-changing roller pair 33 turns over the front and back of the paper P by performing direction-changing transport of the paper P in the direction-changing path 34. This direction-changing path 34 is used to circulate the paper P to the inkjet head 40 again for double-sided printing.

[0037] The inkjet head 40 is, for example, a line-type inkjet head including one or more head assemblies having a plurality of nozzles that eject ink, and ejects ink toward the paper P transported by the roller pair 31, the print transport section 50 described later, and the like. Thereby, the inkjet head 40 performs image formation on the paper P. The inkjet head 40 is one example of an image formation section. The method of image formation is not limited to inkjet printing.

[0038] The print transport section 50 is disposed in opposition to the inkjet head 40, and transports the paper P. The print transport section 50 has a plurality of pulleys 51, a belt 52 that is stretched over these pulleys 51, and a suction fan 53 that sucks air through a plurality of holes provided in the belt 52, thereby causing the paper P to be adsorbed to the belt 52. As the print transport section 50, there can be a print transport section having a transport member other than the belt 52, such as a roller, or a print transport section that does not adsorb the paper P. In addition, the print transport section 50 functions as one example of a transport section that transports the paper P together with the roller pair 31 and the like. As this transport section, it is sufficient to have a transport member such as a roller or a belt.

[0039] The paper discharge section 60 has a paper discharge tray 61 and a paper discharge roller 62. The paper discharge section 60 is one example of a discharge section, and is disposed, for example, in a manner exposed to the outside of the device housing 2, and discharges the paper P to the outside of the device housing 2. The paper P on which image formation has been performed is loaded on the paper discharge tray 61. The paper discharge roller 62 is disposed, for example, as an upper and lower pair, and transports the paper P toward the paper discharge tray 61.

[0040] The inkjet printing device 1 further has a clamping guide 70 as shown in Figs. 7 to 9. Figure 3 、 Figure 4 、 Figure 6 and Figure 7 The clamping guide 70 is formed, for example, of a plastic material, and has a guide plate 71, a pair of support portions 72, 73, a base portion 74, and a plurality of reinforcing ribs 75, as shown in Fig. 8. Figure 6

[0041] The clamping guide 70 holds the driven roller 31a of the roller pair 31. The driven roller 31a held by the clamping guide 70 is disposed in a transport path that is curved upward (see Fig. 1). Figure 3 ​), the conveyance path for conveying the paper sheet P on which the image formation by the inkjet head 40 is performed. The driven roller 31a is held by the pinch guide 70, so that the relative position (the amount of protrusion of the driven roller 31a from the guide plate 71, etc.) of the pinch guide 70 and the driven roller 31a can be constant. The roller pair 31 can include, for example, a coated roller coated with fine particles of ceramic or the like, a mesh roller covered with a fabric, or the like.

[0042] Figure 3 The roller pair 31 is disposed in the vicinity between the conveyance passage 35 and the conveyance passage 36 each formed by a pair of curved plate members. The roller pair 31 has the driven roller 31a and the drive roller 31b. In addition, the pinch guide 70 and the roller pair 31 having the driven roller 31a held by the pinch guide 70 are each arranged with two in the width direction W of the paper sheet P, but the set of the pinch guide 70 and the roller pair 31 can be any number of one or more. Further, the set of the pinch guide 70 and the roller pair 31 can be disposed at a plurality of positions different in the conveyance direction D.

[0043] As Figure 4 shown, the guide plate 71 extends in the width direction W of the paper sheet P and the conveyance direction D of the paper sheet P, and guides the paper sheet P toward the roller pair 31. The guide plate 71 can have a thin flat plate shape. Further, the guide plate 71 can extend in the width direction W of the paper sheet P over a length of more than half the length of the driven roller 31a, and preferably can extend over the entire region of the driven roller 31a.

[0044] As Figure 7 shown, the guide plate 71 enters the space S between the roller pair 31 (the space S sandwiched by the driven roller 31a and the drive roller 31b as illustrated by the double-dot chain line). Preferably, the guide plate 71 can extend in the conveyance direction D in the space S by a length L2 of more than half a length L1 of the space S along the conveyance direction D up to the pinch region N (the region where the roller pair 31 pinches the paper sheet P). Further, the guide plate 71 can be disposed in such a manner that the pinch region N is located on the extension line of the conveyance direction D of the contact surface of the guide plate 71 which contacts the paper sheet P. Further, the guide plate 71 extends so as to cross the conveyance path of the paper sheet P continuous from the conveyance passage 35, so as to be able to guide the paper sheet P in contact with the paper sheet P. In addition, the pinch region N becomes a region which is not linear extending only in the width direction W of the paper sheet P but extends in the width direction W and the conveyance direction D by the roller pair 31 having elasticity. Further, preferably, the upper end (the end portion on the downstream side in the conveyance direction D) of the guide plate 71 becomes a tapered shape along the outer peripheral surface of the driven roller 31a together with the upper ends of the plurality of reinforcing ribs 75 described later.

[0045] As Figure 4 shown, the pair of support portions 72, 73 supports the roller shaft A (refer to FIG. 2). The support portion 72 is a plate-shaped member which extends in the width direction W of the paper sheet P and the conveyance direction D of the paper sheet P, and supports the roller shaft A in the width direction W of the paper sheet P. The support portion 73 is a plate-shaped member which extends in the width direction W of the paper sheet P and the conveyance direction D of the paper sheet P, and supports the roller shaft A in the conveyance direction D of the paper sheet P.Figure 5 ) in the width direction W, the roller shaft A supports the driven roller 31a. The pair of support portions 72, 73 can be flexed in such a way as to move away from each other in the width direction W of the paper P at the time of insertion of the roller shaft A (driven roller 31a), and support the roller shaft A by snap fitting.

[0046] As shown in Figure 6 , the pair of support portions 72, 73 are provided with a shaft receiving recess 72a, 73a that receives the end portion of the roller shaft A, and a bearing receiving recess 72b, 73b that receives a portion of the bearing B mounted to the roller shaft A as shown in Figure 8 . The roller shaft A is inserted into the shaft receiving recess 72a, 73a in the direction opposite to the conveying direction D (downward). Likewise, the bearing B is inserted into the bearing receiving recess 72b, 73b in the direction opposite to the conveying direction D (downward). Therefore, a groove 73a-1, 73b-1 (only the support portion 73 side is shown) that extends in the conveying direction D from the shaft receiving recess 72a, 73a and the bearing receiving recess 72b, 73b can be provided. That is, when fixed by the snap fitting described above, the roller shaft A and the bearing B are guided along the groove 73a-1, 73b-1 to the shaft receiving recess 72a, 73a and the bearing receiving recess 72b, 73b in the direction opposite to the conveying direction D.

[0047] Here, the pair of support portions 72, 73 are provided with the shaft receiving recess 72a, 73a and the bearing receiving recess 72b, 73b, so that both the roller shaft A without the bearing B (refer to Figure 4 ) and the roller shaft A with the bearing B that can cope with high load and high rotation (refer to Figure 8 ) can be held. In addition, the roller shaft A does not rotate integrally with the driven roller 32a in the case where the bearing B is not provided as shown in Figure 4 , and rotates integrally with the driven roller 32a in the case where the bearing B is provided as shown in Figure 8

[0048] As shown in Figure 4 , the pinch guide 70 is disposed between the pair of support portions 72, 73 and the conveying passage 36 described above as shown in Figure 3 , and is urged in the left direction by a pair of compression springs C (shown by a double dotted line) so that the driven roller 31a is pressed against the drive roller 31b. Since the pinch guide 70 holds the driven roller 31a at the pair of support portions 72, 73 by means of the roller shaft A as described above, it can be said that the pinch guide 70 is urged by the pair of compression springs C together with the driven roller 31a. In addition, the compression spring C is one example of an urging member.

[0049] As shown in Figure 6 ​As shown, the base portion 74 has a flat plate shape that expands orthogonally to the conveyance direction D (the guide plate 71). The base portion 74 is provided integrally to the guide plate 71 and the pair of support portions 72, 73.

[0050] A plurality of reinforcing ribs 75 are provided integrally to the base portion 74 in a manner that rises from the base portion 74 to the conveyance direction D. The upper end of the reinforcing rib 75 can have a shape along the outer circumferential surface of the driven roller 31a as described above.

[0051] Figure 2 The control section 81 has a processor (for example, a CPU: Central Processing Unit) that functions as an arithmetic processing device that controls the operation of the entire inkjet printing device 1. The processor reads a predetermined program from the storage section 82 or from a storage medium (non-transitory computer-readable storage medium) that can be attached to and detached from the inkjet printing device 1, for example, and executes the program to thereby control each portion of the inkjet printing device 1. In this way, the control section 81 or the inkjet printing device 1 (the control section 81 and the storage section 82) functions as a computer that executes the program.

[0052] The storage section 82 has, for example, a ROM (ReadOnly Memory) in which a predetermined control program is stored in advance, a RAM (Random Access Memory) that can be read and written at any time and is used as a work area as needed when the processor executes various control programs, and the like.

[0053] The interface section 83 performs various information exchanges with external devices. For example, the interface section 83 receives a print job including print data from a print control device, a user terminal.

[0054] The conveyance drive section 84 is a drive Figure 1 As shown, a plurality of motors and the like that drive the plurality of rollers 31 (the drive rollers 31b), the path switching section 32, the pair of direction changing rollers 33, the direction changing path 34, and the like.

[0055] Here, a summary of the operation of the inkjet printing device 1 will be described.

[0056] First, the external paper feed section 10 or the internal paper feed section 20 feeds a paper sheet P toward the inkjet head 40. The image formation by the inkjet head 40 is performed using the print data included in the print job received by the interface section 83. Figure 3 As shown, the plurality of roller pairs 31 convey the paper sheet P on which the image formation by the inkjet head 40 has been performed along the conveyance path constituted by the conveyance paths 35, 36, and the like.

[0057] The paper sheet P on which the image formation has been performed is conveyed toward the Figure 7The guide plate 71 guides the paper P along the transport direction D to the vicinity of the nip region N when the pair of rollers 31 is transporting the paper P. Therefore, the paper P is transported toward the nip region N without being easily transported toward one of the driven roller 31a and the drive roller 31b.

[0058] Further, the path switching section 32 switches the transport path of the paper P on which image formation has been performed on one side in single-sided printing and the paper P on which image formation has been performed on both sides to a path toward the paper discharge section 60, and switches the transport path of the paper P on which image formation has been performed on only one side in double-sided printing to the turning path 34. The pair of turning rollers 33 turns the paper P by performing turning transport of the paper P in the turning path 34, thereby inverting the front side and the back side of the paper P. The paper P whose front side and back side have been inverted in the turning path 34 is again transported toward the inkjet head 40.

[0059] In addition, in the above description, the holding guide 70 holds the driven roller 31a of the pair of rollers 31 that transports the paper P after image formation, but can hold the driven roller 31a of the pair of rollers 31 that transports the paper P before image formation. Further, the pair of rollers 31 can be constituted by two driven rollers 31a. Further, the holding guide 70 preferably holds the driven roller 31a provided in a curved transport path, but can hold the driven roller 31a provided in a straight transport path.

[0060] Further, in the above description, among the pair of support sections 72, 73 of the holding guide 70, as the biasing member that biases the holding guide 70 and the driven roller 31a, a pair of compression springs C is cited. However, as the biasing member, other springs such as extension springs, elastic bodies other than springs such as rubber can be used. Further, the number of the compression springs C (biasing member) is not limited to two, and can be one or more. Further, the compression springs C (biasing member) can press the roller shaft A of the driven roller 31a without pressing the holding guide 70.

[0061] In the above-described embodiment, the inkjet printing device 1 that is one example of a transport device is provided with the pair of rollers 31, the holding guide 70, and the compression springs C that are one example of a biasing member. The pair of rollers 31 transports the paper P that is one example of a medium while holding the paper P. The holding guide 70 holds the driven roller 31a that is one example of one of the rollers of the pair of rollers 31, and guides the paper P toward the pair of rollers 31. The compression springs C bias the holding guide 70 and the driven roller 31a, so that the driven roller 31a is pressed against the drive roller 31b. The holding guide 70 has the guide plate 71 that extends in the width direction W of the paper P and the transport direction D of the paper P, and guides the paper P toward the pair of rollers 31.

[0062] By thus expanding the guide plate 71 in the width direction W and the conveying direction D of the paper P, the contact surface with the paper P can be increased compared to a configuration in which the paper P is guided by a rib-shaped guide portion. Therefore, the guide plate 71 is less likely to wear, and the durability and strength of the guide plate 71 are increased, so that the thickness of the guide plate 71 can be reduced. Further, by holding the driven roller 31a by the pinch guide 70, variation in the relative position of the pinch guide 70 and the driven roller 31a caused by variations in components and the like can be suppressed. Thus, by guiding the paper P to the vicinity of the pinch region N of the roller pair 31, the situation in which the paper P is conveyed so as to be in contact with the driven roller 31a or the drive roller 31b by being biased toward one of the driven roller 31a and the drive roller 31b compared to the pinch region N can be suppressed. Thus, according to the present embodiment, the occurrence of a bumping sound caused by the paper P bumping against the roller pair 31, and damage to the paper P can be prevented. With regard to the bumping sound, the noise value of the inkjet printing device 1 can be confirmed to be reduced by 0.4 dB compared to a configuration in which the pinch guide 70 is replaced by a guide that does not hold the driven roller 31a and does not enter the space S between the roller pair 31.

[0063] Further, as the roller pair 31 that conveys the paper P conveyed after image formation, a roller having irregularities such as a mesh roller is used. In this case, the bumping sound becomes large when the paper P comes into contact with the web of the roller pair 31, or the paper P is easily damaged. Further, in a roller pair 31 that conveys the paper P in a curved conveying path, the paper P is easily brought into contact with the web of the roller pair 31. However, by using the pinch guide 70 of the present embodiment, the paper P can be guided to the vicinity of the pinch region N even if the roller pair 31 is a mesh roller, or even if the roller pair 31 is provided in a curved conveying path, so that the bumping sound can be effectively prevented from becoming large or the paper P from being damaged.

[0064] Further, in the present embodiment, the guide plate 71 enters the space S between the roller pair 31.

[0065] Therefore, the paper P can be guided to the vicinity of the pinch region N, and the occurrence of a bumping sound and damage to the paper P can be effectively prevented.

[0066] Further, in the present embodiment, the guide plate 71 extends in the space S in the conveying direction D by a length L2 that is more than half the length LI of the space S from the pinch region N in which the paper P is pinched by the roller pair 31 in the conveying direction D.

[0067] Thus, the paper P can be guided to a position closer to the pinch region N, and the occurrence of a bumping sound and damage to the paper P can be further prevented.

[0068] Further, in the present embodiment, the guide plate 71 expands in the entire region of the driven roller 31a in the width direction W of the paper P.

[0069] Thus, the contact surface with the paper P can be increased, and therefore the clamping guide 70 is less likely to be worn, and durability and strength are improved. Thus, the thickness of the guide plate 71 can be further reduced, and the paper P can be guided to a position closer to the clamping region N. Thus, the occurrence of a tailing sound and damage to the paper P can be further prevented.

[0070] Further, in the present embodiment, the inkjet printing apparatus 1 further includes a roller shaft A that supports the driven roller 31a, and the clamping guide 70 includes a pair of support portions 72, 73 into which both ends of the roller shaft A in the width direction W are inserted in a direction opposite to the conveying direction D, and supports both ends of the roller shaft A.

[0071] In this case where the roller shaft A (driven roller 31a) is inserted into the pair of support portions 72, 73 in the direction opposite to the conveying direction D, compared to a case where the roller shaft A (driven roller 31a) is inserted into the pair of support portions 72, 73 in another direction, the roller shaft A and the driven roller 31a are less likely to interfere with the pair of support portions 72, 73, and the like, and the guide plate 71 can be disposed closer to the clamping region N.

[0072] In addition, the present application is not limited to the above-described embodiments as they are, and structural elements can be modified and embodied within a range not departing from the gist thereof in the implementation stage. Further, various technical solutions can be formed by appropriate combinations of the plurality of structural elements disclosed by the above-described embodiments. For example, all the structural elements shown in the embodiments can be appropriately combined. Of course, various modifications and applications can be made within a range not departing from the gist of the present application. Hereinafter, some of the technical solutions described in the specification of the present application are described.

[0073] [Note 1]

[0074] A conveying apparatus characterized by comprising:

[0075] The conveying apparatus includes:

[0076] a pair of rollers that conveys a medium while sandwiching the medium;

[0077] a clamping guide that holds one of the pair of rollers and guides the medium toward the pair of rollers; and

[0078] a force applying member that applies a force to the clamping guide and the one of the pair of rollers so that the one of the pair of rollers is pressed against the other of the pair of rollers,

[0079] the clamping guide has a guide plate that extends in a width direction of the medium and a conveying direction of the medium and guides the medium toward the pair of rollers.

[0080] [Note 2]

[0081] The conveyance device according to the supplementary note 1, wherein the guide plate extends in the space between the pair of rollers.

[0082] [Supplementary Note 3]

[0083] The conveyance device according to the supplementary note 2, wherein the guide plate extends in the space by a length of more than half of a length of the space in the conveyance direction up to a nip area where the pair of rollers nips the medium.

[0084] [Supplementary Note 4]

[0085] The conveyance device according to any one of the supplementary notes 1 to 3, wherein the guide plate extends in the entire area of the one roller in the width direction.

[0086] [Supplementary Note 5]

[0087] The conveyance device according to any one of the supplementary notes 1 to 4, wherein the one roller is a driven roller,

[0088] The conveyance device further comprises a roller shaft that supports the driven roller,

[0089] The nip guide has a pair of support portions into which both ends of the roller shaft in the width direction are inserted in a direction opposite to the conveyance direction, and supports the both ends.

Claims

1. A conveying device, characterized in that, The conveying device has the following features: A roller pair, which holds the medium on one side while conveying it; A clamping guide that holds one of the rollers in the roller pair and guides the medium toward the roller pair; and A force-applying member applies force to the clamping guide and the one roller, such that the one roller is pressed against the other roller in the roller pair. The clamping guide has a guide plate that extends in the width direction and the conveying direction of the medium, guiding the medium toward the roller pair.

2. The conveying device according to claim 1, characterized in that, The guide plate enters the space between the roller pairs.

3. The conveying device according to claim 2, characterized in that, The guide plate extends in the space along the conveying direction with a length of more than half the length of the space up to the clamping area where the medium is clamped by the roller pair.

4. The conveying device according to claim 1, characterized in that, The guide plate extends across the entire area of ​​the roller in the width direction.

5. The conveying device according to claim 1, characterized in that, The roller is a driven roller. The conveying device also includes a roller shaft that supports the driven roller. The clamping guide has a pair of support portions for the two ends of the roller shaft to be inserted in the direction opposite to the conveying direction, supporting the two ends.

Images