Conveying device and recording device
By setting a buffer section and an abutment section in the conveying device, the low-speed conveying of the buffer section and the reduction of collision force by the elastic components solve the noise problem when the medium is corrected at an angle, and improve the quietness effect.
Patent Information
- Application Number
- CN202310437102.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2022-04-23
- Filing Date
- 2023-04-21
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2043-04-21
AI Technical Summary
Existing conveying devices generate significant noise when correcting the skewed movement of the medium, especially when the medium collides with the skew correction section, leading to noise problems.
A buffer section is provided in the direction of medium conveying. The conveying speed of the buffer section is slower than that of the first conveying section. When the contact section comes into contact with the medium, the collision force is reduced by elastic components or dampers to avoid strong collisions. The combination structure of the oblique correction section and the buffer section is used to correct the oblique movement of the medium.
It effectively reduces the noise during media correction and avoids violent collisions between the media and the correction and buffer sections, thus improving the quietness of the conveying process.
Smart Images

Figure CN116924111B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a conveying device and a recording device. Background Technology
[0002] In the past, recording devices such as printers have used various types of transport devices. Among them, there are transport devices capable of correcting skewness in the transported medium. For example, Patent Document 1 discloses a transport device in which, for sheets smaller than a certain size, the transported sheet collides with a third claw to correct skewness; and for sheets larger than a certain size, the transported sheet collides with the third claw and then further collides with the first and second claws to correct skewness.
[0003] Patent Document 1: Japanese Patent Application Publication No. 2020-189731
[0004] However, in existing conveying devices capable of correcting the skewness of the conveyed medium, a relatively loud noise is generated during the correction of the skewness. This noise is produced when the conveyed medium collides with the skew correction section. In the conveying device of Patent Document 1, when conveying sheets smaller than a certain size, a relatively loud noise is generated when the sheet, as the medium, collides with the third claw, which serves as the skew correction section. Furthermore, in the conveying device of Patent Document 1, when conveying sheets of a certain size or larger, both the collision of the sheet, as the medium, with the third claw, and the collision of the sheet with the first and second claws, which also serve as the skew correction section, generate relatively loud noise. Here, in the conveying device of Patent Document 1, when conveying sheets of a certain size or larger, the sheet collides with the third claw first, and then with the first and second claws, so the noise from the collision of the sheet with the first and second claws tends to be less. However, the sound when the sheet collides with the third claw, which serves as the slant correction part, is quite loud. Furthermore, considering the sum of the sound when the sheet collides with the third claw and the sound when the sheet collides with the first and second claws, it can be said that a large sound is generated when the correction medium is slanted. Summary of the Invention
[0005] The conveying device of the present invention, which solves the above-mentioned technical problems, is a conveying device for conveying a medium, characterized in that it comprises: a slant correction section for correcting the slant of the medium by collision with the conveyed medium; a first conveying section for conveying the medium to the slant correction section; and a buffer section, wherein an abutment section capable of abutting the medium is provided between the first conveying section and the slant correction section in the conveying direction of the medium, and the buffer section is configured such that a second conveying speed is slower than a first conveying speed, the first conveying speed being the conveying speed of the medium upstream of the buffer section in the conveying direction, and the second conveying speed being the conveying speed of the medium when it collides with the slant correction section after abutting the abutment section, and the buffer section is configured such that the abutment section does not produce a collision strong enough to correct the slant of the medium.
[0006] The recording apparatus of the present invention for solving the above-mentioned technical problems is characterized by comprising: the above-described conveying device; and a recording unit for recording the medium conveyed by the conveying device. Attached Figure Description
[0007] Figure 1 This is a front view showing the internal structure of the printer according to Embodiment 1 of the present invention.
[0008] Figure 2 It means Figure 1 The front sectional view of the printer's slant correction mechanism is a diagram showing the state of the contact part in contact with the conveyed medium.
[0009] Figure 3 It means Figure 1 The perspective view of the printer's slant correction mechanism is a diagram showing the state of the contact part in contact with the medium being transported.
[0010] Figure 4 It means Figure 1 The front sectional view of the printer's slant correction mechanism shows the contact part in a position where it does not contact the medium being transported.
[0011] Figure 5 It means Figure 1 The perspective view of the printer's slant correction mechanism shows the state in which the contact part is not in contact with the medium being transported.
[0012] Figure 6 This is a front sectional view showing the slant correction mechanism of the printer according to Embodiment 2 of the present invention.
[0013] Figure 7 This is a schematic diagram illustrating the slant correction mechanism of the printer according to Embodiment 3 of the present invention.
[0014] Figure 8 This is a schematic diagram illustrating the slant correction mechanism of the printer according to Embodiment 4 of the present invention.
[0015] Figure 9 This is a schematic front sectional view showing the slant correction mechanism of the printer according to Embodiment 5 of the present invention.
[0016] Explanation of reference numerals in the attached figures
[0017] 1…Inkjet printer (transportation device, recording device), 2…Main body of the device, 3…First media cartridge, 4…Second media cartridge, 5…Third media cartridge, 6…Additional unit, 8…Discharge tray, 11…Waste liquid collection section, 13…Conveyor belt (second transport section), 14…Pulley, 15…Pulley, 16…Housing section, 17…Door section, 19…Feed roller, 20…Separation roller, 21…Pick-up roller, 22…Pick-up roller, 23…Pick-up roller, 25…Feed roller pair (first transport section), 26…Feed roller pair (first transport section), 27…Feed roller pair (first transport section) 28… conveyor roller pair (first conveyor section), 29… conveyor roller pair (first conveyor section), 31… conveyor roller pair (skew correction section), 32… conveyor roller pair (second conveyor section), 33… conveyor roller pair, 34… conveyor roller pair, 35… conveyor roller pair (second conveyor section), 36… conveyor roller pair (second conveyor section), 37… conveyor roller pair (second conveyor section), 39… reverse roller (first conveyor section), 40… driven roller (first conveyor section), 41… wing plate, 50… head unit, 51… line head (recording section), 61… ink receiving section 62…Ink receiving section, 63…Ink receiving section, 64…Ink receiving section, 100…Slant correction mechanism, 101…Shaft, 102…Shaft, 110…Buffer section (impact reduction mechanism), 110A…Buffer section, 110B…Buffer section, 110C…Buffer section, 110D…Buffer section, 110E…Buffer section, 110b…Protrusion, 111…Issuing section, 111a…Flexible component, 111b…End section, 111c…Base end, 121…Sheet metal component, 122…Torsion coil spring, 122A…End section 122B…End, 123…Sheet metal part, 123a…Wall part, 130…Damper (force reduction mechanism), 140…Solenoid (force reduction mechanism, displacement part), 141…Three-dimensional coil, 142…Plunger, 150…Grid part, 151…Shaft, 311…First roller, 311a…Tooth part, 312…Second roller, K1…Bifurcation position, P…Medium, P1…Merging point, S1…Collision position, S2…Retreat position, T0…Feed path, T1…Conveyor path during recording, T2…Flipping path, T3…Reversing path. Detailed Implementation
[0018] The present invention will now be described illustratively.
[0019] The first aspect of the present invention relates to a conveying device for conveying a medium, characterized in that it comprises: a slant correction unit for correcting the slant of the medium by collision with the conveyed medium; a first conveying unit for conveying the medium to the slant correction unit; and a buffer unit, wherein an abutment portion capable of contacting the medium is provided between the first conveying unit and the slant correction unit in the conveying direction of the medium, wherein the buffer unit is configured such that a second conveying speed is slower than a first conveying speed, the first conveying speed being the conveying speed of the medium upstream of the buffer unit in the conveying direction, the second conveying speed being the conveying speed of the medium when it collides with the slant correction unit after contacting the abutment portion, and wherein the abutment portion and the medium do not produce a collision strong enough to correct the slant of the medium.
[0020] According to this method, in the buffer section, the second conveying speed is configured to be slower than the first conveying speed, and the contact portion is configured to prevent collisions with the medium that are strong enough to correct the oblique movement of the medium. Therefore, it is possible to suppress violent collisions between the medium and the oblique correction section during the oblique movement of the correction medium, and it is also possible to suppress violent collisions between the medium and the contact portion of the buffer section. As a result, the noise emitted during the oblique movement of the correction medium can be reduced.
[0021] The conveying device according to the second aspect of the present invention is characterized in that, in the first aspect, the buffer portion has an abutment force reducing mechanism that reduces the abutment force when the abutment portion abuts against the medium.
[0022] According to this method, the buffer section has an abutment force reduction mechanism that reduces the abutment force when the contact section comes into contact with the medium. Therefore, by means of the abutment force reduction mechanism, it is possible to suppress violent collisions between the medium and the oblique correction section when the correction medium is obliquely moving, and it is also possible to suppress violent collisions between the medium and the contact section of the buffer section.
[0023] The conveying device according to the third aspect of the present invention is characterized in that, in the second aspect, the abutment force reducing mechanism has an elastic member that applies force to the abutment portion in the opposite direction of the conveying direction.
[0024] According to this method, the contact force reduction mechanism has an elastic member that applies force to the contact portion in the opposite direction to the conveying direction. Therefore, for example, based on the force applied by the elastic member, the medium can be appropriately decelerated, and the contact portion can be returned to its initial position, i.e., the position where the contact portion and the medium begin to contact.
[0025] The conveying device according to the fourth aspect of the present invention is characterized in that, in the second aspect, the abutment force reducing mechanism has a damper that causes the movement of the abutment portion in the conveying direction to be attenuated.
[0026] According to this method, the contact force reducing mechanism has a damper that reduces the movement of the contact portion in the conveying direction. Therefore, the damper, for example, can appropriately slow down the medium.
[0027] The fifth aspect of the conveying device of the present invention is characterized in that, in the second aspect, the contact force reducing mechanism has a displacement portion that causes the contact portion to move from a contact start position where the contact portion contacts the medium to a retraction position where the contact portion does not contact the medium. The displacement portion is configured such that, when the contact portion moves from the contact start position to the retraction position, it can move in such a way that the conveying speed of the medium is slower than a first conveying speed, and it can return the contact portion from the retraction position to the contact start position.
[0028] According to this method, the contact force reduction mechanism has a displacement section that moves the contact portion from the contact initiation position to the retraction position. This displacement section can move at a speed that slows the medium's conveying speed compared to a first conveying speed, and can return the contact portion from the retraction position to the contact initiation position. Therefore, for example, by using a displacement section such as a solenoid, the medium can be appropriately decelerated, and the contact portion can be returned to its initial position, i.e., the position where the contact portion begins to contact the medium.
[0029] The conveying device according to the sixth aspect of the present invention is characterized in that, in the second aspect, the abutment force reducing mechanism has a flexible component.
[0030] According to this method, the contact force reduction mechanism has a flexible component. Therefore, for example, by using a flexible component, a structure that allows the medium to be appropriately decelerated and the contact portion to return to its initial position, i.e., the position where the contact portion begins to contact the medium, can be formed simply or at low cost.
[0031] The conveying device according to the seventh aspect of the present invention is characterized in that, in any of the first to sixth aspects, the slant correction section is a roller pair having a first roller and a second roller opposite to the first roller.
[0032] According to this method, the skew correction unit is a roller pair. Therefore, for example, skew can be corrected at the clamping point of the roller pair, and the skew correction unit can also function as a medium conveying unit.
[0033] The conveying device according to the eighth aspect of the present invention is characterized in that, in the seventh aspect, the abutting portion is capable of rotating coaxially with the first roller.
[0034] According to this method, the contact portion can rotate coaxially with the first roller. Therefore, the distance between the contact start position and the collision position can be shortened, where the contact start position is the position where the medium begins to contact the contact portion and the collision position is the position where the medium collides with the skew correction portion. This shortens the time from the start of contact between the medium and the contact portion to the collision with the skew correction portion, and can suppress the decrease in throughput.
[0035] The conveying device according to the ninth aspect of the present invention is characterized in that, in the seventh aspect, at least one of the first roller and the second roller is a toothed roller that contacts the medium with its teeth.
[0036] According to this method, at least one of the first roller and the second roller is a toothed roller. Generally speaking, if a toothed roller is used as a skew correction section, the collision noise of the medium is often relatively large, but due to the presence of a buffer section, the noise emitted when the medium is skewed can be reduced.
[0037] The conveying device according to the tenth aspect of the present invention is characterized in that, in the seventh aspect, the buffer section and the first roller are alternately arranged in a plurality of configurations in the axial direction of the first roller.
[0038] According to this method, multiple buffer sections are alternately arranged between the first roller and the first roller in the axial direction. Therefore, for media of various sizes, the skewness of the media can be appropriately corrected while reducing the noise generated during the correction of the skewness of the media. In particular, when using larger media, by alternately arranging multiple buffer sections between the first roller and the first roller in the axial direction, the skewness of the media can be effectively and appropriately corrected, and the noise generated during the correction of the skewness of the media can be reduced.
[0039] The conveying device according to the eleventh aspect of the present invention is characterized in that, in any of the first to sixth aspects, the slant correction section is a gate section capable of being displaced to a collision position where the conveyed medium collides with the medium and a passage position where the conveyed medium passes through.
[0040] According to this method, the slant correction section is a grid section that can be displaced to both the collision position where the transported medium collides with the medium and the passage position where the transported medium passes through. Therefore, in a structure that uses the grid section for slant correction, the noise generated when correcting the slant of the medium can be reduced.
[0041] The conveying device according to the twelfth aspect of the present invention is characterized in that, in the eleventh aspect, the gate portion can be displaced to the collision position and the passing position by rotating about a direction intersecting the conveying direction, and the abutting portion can rotate coaxially with the gate portion.
[0042] According to this method, the grid can be displaced to the collision position and the passage position by rotating about a direction intersecting the conveying direction, and the contact part can rotate coaxially with the grid. Therefore, the distance between the contact start position and the collision position can be shortened, where the contact start position is the position where the medium begins to contact the contact part, and the collision position is the position where the medium collides with the skew correction part. This shortens the time from the start of contact between the medium and the contact part to the collision with the skew correction part, and can suppress the decrease in throughput.
[0043] The conveying device according to the thirteenth aspect of the present invention is characterized in that, in the third aspect, the oblique correction part is a gate part that can be displaced to a collision position where the conveyed medium collides with the medium and a passing position where the conveyed medium passes through the medium. The gate part can be displaced to the collision position and the passing position by rotating about a rotation axis in a direction intersecting the conveying direction. The abutting part is subjected to a first force by the abutting force reducing mechanism in the opposite direction of the conveying direction, and the gate part is subjected to a second force in the opposite direction of the conveying direction. The first force is smaller than the second force.
[0044] According to this method, the contact portion is subjected to a first force in the opposite direction of the conveying direction, and the grid portion is subjected to a second force in the opposite direction of the conveying direction, wherein the first force is smaller than the second force. Therefore, for example, it is possible to prevent the contact portion from colliding with the medium and to stop the medium from being pushed back, thereby reducing the noise generated when correcting the oblique movement of the medium.
[0045] The conveying device according to the fourteenth aspect of the present invention is characterized in that, in any of the first to thirteenth aspects, the abutting portion extends from the base end to the end portion in contact with the medium, and the end portion extends downstream of the base end in the conveying direction.
[0046] According to this method, the end portion of the contacting part that contacts the medium extends downstream of the base end portion in the conveying direction. Therefore, it is possible to suppress the impact noise caused by the conveyed medium accidentally colliding violently with the contacting part. In particular, the medium collides at an angle relative to the contacting part, thereby suppressing the impact noise compared to a right-angle collision. Furthermore, compared to the case where the contacting part extends upstream of the base end portion in the conveying direction, it does not obstruct the conveying of the medium.
[0047] The conveying device according to the fifteenth aspect of the present invention is characterized in that, in any one of the first to fourteenth aspects, it includes a second conveying section that conveys the medium further downstream than the slant correction section in the conveying direction, and a third conveying speed that is faster than the second conveying speed, the third conveying speed being the conveying speed of the medium based on the second conveying section after the slant correction section has corrected the slant.
[0048] According to this method, the third conveying speed is faster than the second conveying speed, which is the conveying speed of the medium based on the second conveying unit after the skew correction unit has corrected the skew. Therefore, it is possible to reduce the noise emitted during the skew correction of the medium while suppressing the decrease in throughput caused by the subsequent recovery of the medium's conveying speed.
[0049] The recording apparatus according to the sixteenth aspect of the present invention is characterized in that it includes a conveying device of any one of the first to fifteenth aspects; and a recording unit for recording the medium conveyed by the conveying device.
[0050] According to this method, a recording unit is provided for recording the medium. Therefore, when recording the medium, the noise emitted during the correction of the medium's skew can be reduced. In other words, it is possible to improve recording accuracy while correcting the skew of the medium, and at the same time reduce the noise emitted during the correction of the medium's skew.
[0051] Example 1
[0052] The present invention will now be described in detail. First, the inkjet printer 1 of Embodiment 1, which is also a recording device of the present invention, will be described. Hereinafter, the inkjet printer 1 will be simply referred to as printer 1. It should be noted that the XYZ coordinate system shown in the figures is an orthogonal coordinate system. The Y-axis direction is the direction intersecting the transport direction of the medium P, i.e., the direction of the medium width, and also the direction of the device depth. Within the Y-axis direction, the +Y direction is the direction from the front of the device towards the back of the device, and the -Y direction is the direction from the back of the device towards the front of the device.
[0053] The X-axis represents the width of the device. From the operator's perspective, the +X direction is the left, and the -X direction is the right. The Z-axis represents the vertical direction, i.e., the height of the device. The +Z direction is the upward direction, and the -Z direction is the downward direction. Hereinafter, the direction in which the medium P is transported is referred to as "downstream," and its opposite direction as "upstream." Furthermore, in each figure, the medium transport path is shown with dashed lines. In printer 1, the medium P is transported through the medium transport path shown by the dashed lines.
[0054] like Figure 1As shown, printer 1 includes a housing portion 16 of device body 2 and a door portion 17 that can rotate relative to housing portion 16 about an axis (not shown) extending in the Z-axis direction. Furthermore, printer 1 has a first media cartridge 3 at the lower part of device body 2 to hold media P. Further, printer 1 is configured such that an additional installation unit 6 can be connected to the lower side of device body 2. With the additional installation unit 6 connected, second media cartridge 4 and third media cartridge 5 are located below the first media cartridge 3. Media P dispensed from each media cartridge is transported in a media transport path, which is shown as a dashed line inside printer 1.
[0055] Each media cartridge is equipped with a pickup roller that feeds the contained media P in the -X direction. Pickup rollers 21, 22, and 23 are respectively pickup rollers positioned relative to the first media cartridge 3, the second media cartridge 4, and the third media cartridge 5. Additionally, each media cartridge is equipped with a feed roller pair that feeds the media P fed in the -X direction in an upward oblique direction. Feed roller pairs 25, 26, and 27 are respectively feed roller pairs positioned relative to the first media cartridge 3, the second media cartridge 4, and the third media cartridge 5. It should be noted that, unless otherwise specified, the term "roller pair" as used below refers to a drive roller driven by a motor (not shown) and a driven roller that rotates in contact with the drive roller.
[0056] Media P delivered from the third media cartridge 5 is fed to the reversing roller 39 by the transport roller pair 29, 28. Media P delivered from the second media cartridge 4 is also fed to the reversing roller 39 by the transport roller pair 28. Media P is held by the reversing roller 39 and the driven roller 40 and fed to the transport roller pair 31. Media P delivered from the first media cartridge 3 is fed to the transport roller pair 31 without passing through the reversing roller 39. Details will be described later. The transport roller pair 31 functions as a skew correction unit, and the periphery of the transport roller pair 31 forms the main part of the printer 1 of this embodiment, namely the skew correction mechanism 100. It should be noted that the supply roller 19 and the separation roller 20, located near the reversing roller 39, are roller pairs that deliver media P from a supply tray (not shown).
[0057] The medium P, subjected to the conveying force from the conveyor roller pair 31, is sent to the recording position between the line head 51 (which serves as a recording unit) and the conveyor belt 13, i.e., opposite to the line head 51. It should be noted that, hereinafter, the medium conveying path from the conveyor roller pair 31 to the conveyor roller pair 32 will be referred to as the recording conveying path T1.
[0058] The line print head 51 constitutes the head unit 50. The line print head 51 ejects ink, such as a liquid, onto the surface of the medium P and performs recording. The line print head 51 is an ink ejection head configured such that the nozzle ejecting ink covers the entire width of the medium, and is configured to record the entire width of the medium without accompanying movement in the width direction. However, the ink ejection head is not limited to this; it can also be a type that ejects ink while being mounted on a carriage and moving along the width direction of the medium. Furthermore, for example, a structure other than an ink ejection head, such as a thermal transfer recording unit, can be used as the recording unit.
[0059] Printer 1 includes ink receiving sections 61, 62, 63, and 64, which serve as liquid receiving sections. Ink ejected from line head 51 is supplied to line head 51 from each ink receiving section via tubes (not shown). Each ink receiving section is detachable. Additionally, printer 1 includes a waste liquid receiving section 11, which stores ink ejected from line head 51 as waste liquid for maintenance purposes into a rinsing cap (not shown).
[0060] The conveyor belt 13 is an annular belt wound around pulleys 14 and 15, at least one of which is driven to rotate by a motor (not shown). The medium P is conveyed at a position opposite to the guide head 51 while being adsorbed onto the surface of the conveyor belt 13. Known adsorption methods such as air suction or electrostatic adsorption can be used for the adsorption of the medium P onto the conveyor belt 13.
[0061] The recording path T1, passing through the position opposite to the line head 51, is an upward conveying path that angles with respect to both the horizontal and vertical directions, transporting the medium P upwards. This upward conveying direction is... Figure 1 The direction includes both the -X and +Z components. Based on this structure, the horizontal dimension of printer 1 can be suppressed.
[0062] The medium P, recorded on the first side by the line head 51, is further conveyed upwards by the conveyor roller pair 32 located downstream of the conveyor belt 13. A wing plate 41 is provided downstream of the conveyor roller pair 32, which switches the conveying direction of the medium P. When the medium P is to be discharged directly, the conveying path of the medium P is switched by the wing plate 41 to the upward-facing conveyor roller pair 35, and the medium P is discharged from the conveyor roller pair 35 to the discharge tray 8.
[0063] Based on the first surface of medium P, and further recording the second surface opposite to the first surface, the conveying direction of medium P is directed towards the branching position K1 by the wing plate 41. Then, medium P passes through the branching position K1 and enters the reversing path T2. In this embodiment, the reversing path T2 is set as a medium conveying path higher than the branching position K1. The reversing path T2 is provided with conveying roller pairs 36 and 37. Medium P that has entered the reversing path T2 is conveyed upward by the conveying roller pairs 36 and 37. Then, if the rear end edge of medium P passes through the branching position K1, the rotation direction of the conveying roller pairs 36 and 37 is switched, thereby conveying medium P downward. It should be noted that the term "upward direction" does not only refer to the vertical upward direction, but also means that the vector component of the vertical upward direction is included. Similarly, the term "downward direction" does not only refer to the vertical downward direction, but also means that the vector component of the vertical downward direction is included.
[0064] The reversing path T2 is connected to the reversing path T3. In this embodiment, the reversing path T3 is set as the medium conveying path that passes from the branching position K1 through the conveying roller pairs 33 and 34 and the reversing roller 39 at the confluence point P1. The medium P, which has been conveyed downward from the branching position K1, is conveyed by the conveying force from the conveying roller pairs 33 and 34, reaches the reversing roller 39, is bent and reversed by the reversing roller 39, and is then sent to the conveying roller pair 31.
[0065] Medium P is conveyed by the conveyor roller pair 31, and after being delivered to a position opposite to the linear head 51, its second side faces the linear head 51, wherein the second side is opposite to the first side that has been recorded. Thus, the linear head 51 can record the second side of medium P. Here, the medium conveying path from the first medium cartridge 3 to the conveyor roller pair 31 is called the feed path T0.
[0066] Next, refer to Figures 2 to 5 The main part of the printer 1 in this embodiment, namely the slant correction mechanism 100, will be described in detail. For example... Figures 2 to 5 As indicated, the slant correction mechanism 100 of this embodiment has a pair of conveying rollers 31 serving as a slant correction unit. The pair of conveying rollers 31 consists of a first roller 311 and a second roller 312 opposite to the first roller 311. The conveying rollers 31 correct the slant of the conveyed medium P by causing the end of the conveyed medium P at the beginning side in the conveying direction A to collide with the clamping position of the first roller 311 and the second roller 312, thereby causing the end to mate with the clamping position in the Y-axis direction.
[0067] The first roller 311 and the second roller 312 are configured to rotate around axes 101 and 102 extending in the Y-axis direction. The first roller 311 has a buffer portion 110 on its axis 101 that allows rotation about this axis. It should be noted that the second roller 312 applies force to the first roller 311. Thus, as... Figure 2 as well as Figure 4 As indicated, the buffer section 110A of this embodiment, which is a buffer section 110, is provided with an abutment section 111 that can abut against the transported medium P. The abutment section 111 is located at... Figure 2 At the indicated position, the contact portion 111, which abuts against the conveyed medium P, moves along with the conveying of the medium P in the conveying direction A. Figure 4 The location indicated.
[0068] It should be noted that, as Figure 3 as well as Figure 5 As shown, in the printer 1 of this embodiment, multiple buffer portions 110A are formed on the shaft 101. Each buffer portion 110A is fixed to the sheet metal component 121, forming a structure in which all buffer portions 110A can rotate as a whole around the shaft 101. Furthermore, the shaft 101 is fitted with a torsion coil spring 122. One end 122A of the torsion coil spring 122 is fixed to the sheet metal component 121, and the other end 122B of the torsion coil spring 122 is fixed to the sheet metal component 123, which is fixed to the frame within the printer 1.
[0069] Because the printer 1 in this embodiment has such a structure, by means of the spring force of the torsion coil spring 122, a force is applied in the direction of separation between the sheet metal part 121 and the sheet metal part 123; that is, a force is applied to move to... Figure 4 The contact part 111 at the indicated position returns. Figure 2 The indicated position is used in this way. If described differently, the torsion coil spring 122 will move the abutment portion 111 towards... Figure 2 as well as Figure 4 The counter-clockwise direction in this context means applying force in the opposite direction to the conveying direction A. It should be noted that... Figure 2 The indicated position corresponds to the initial position of the buffer section 110A. Figure 2 At the indicated position, the protrusion 110b of the buffer portion 110A abuts against the wall portion 123a provided on the sheet metal member 123, thereby maintaining the posture of the buffer portion 110A.
[0070] Here, the spring force of the torsion coil spring 122 is not strong enough to correct the slant of the medium P by the buffer portion 110A, and is adjusted to a strength that slows down the conveying speed of the conveyed medium P when it comes into contact with the contact portion 111 compared to the case without the buffer portion 110A. That is, the conveying speed of the medium P when it comes into contact with the contact portion is adjusted to be lower than the conveying speed of the medium P when it comes into contact with the contact portion 110A. In other words, if the conveying speed of the medium P when the buffer portion 110A does not participate in correcting the slant of the medium P and when there is no buffer portion 110A is set as the first conveying speed, and the conveying speed of the medium P when it comes into contact with the contact portion 111 and collides with the conveying roller pair 31 is set as the second conveying speed, then the first conveying speed > the second conveying speed. It should be noted that the conveying speed of the medium P can also be the conveying speed of the portion of the medium P that comes into contact with the contact portion 111.
[0071] To summarize for now, the printer 1 in this embodiment is a conveying device for conveying medium P. It includes a conveying roller pair 31, which acts as a skew correction unit, correcting the skewness of the conveyed medium P by causing it to collide with the conveying medium P. Furthermore, as a first conveying unit that conveys medium P to the conveying roller pair 31, it includes various roller pairs such as feed roller pairs 25, 26, and 27, conveying roller pairs 28 and 29, and a roller pair consisting of a reverse roller 39 and a driven roller 40, all positioned upstream of the conveying roller pair 31 in the conveying direction A. Additionally, it includes a buffer unit 110A, which has an abutment portion 111. This abutment portion 111 is positioned between these first conveying units and the conveying roller pair 31 in the conveying direction A of the medium P, and is capable of abutting against the medium P. Here, in the buffer section 110A, the second conveying speed is configured to be slower than the first conveying speed. The first conveying speed corresponds to the conveying speed of the medium P which is upstream of the buffer section 110A in the conveying direction A. The second conveying speed corresponds to the conveying speed of the medium P when it collides with the conveying roller pair 31 after the medium P comes into contact with the contact section 111. Furthermore, the contact section 111 and the medium P do not produce a collision strong enough to correct the slant of the medium P.
[0072] Because the printer 1 of this embodiment is configured in this way, it can suppress violent collisions between the media P and the oblique correction section, i.e., the transport roller pair 31, when the media P is traveling at an angle, and it can also suppress violent collisions between the media P and the contact portion 111 of the buffer section 110A. Therefore, the printer 1 of this embodiment can reduce the noise emitted when the media P is traveling at an angle. It should be noted that the phrase "the contact portion 111 does not produce a collision strong enough to correct the oblique movement of the media P" can be expressed as "it does not stop by the contact portion 111 colliding with the media P and pushing the media P back, but rather by slowing down the media P while coordinating with the displacement of the transported media P."
[0073] From the perspective of a recording device, the printer 1 of this embodiment includes a transport device with the structure described above, and a line print head 51 as a recording unit, which records the medium P transported by the transport device. Therefore, when recording the medium P, the printer 1 of this embodiment can reduce the noise emitted when correcting the slant of the medium P.
[0074] Furthermore, as described above, the buffer portion 110A in this embodiment is a structure in which the contact portion 111, while cooperating with the displacement of the conveyed medium P, decelerates the medium P. That is, the buffer portion 110A functions as a contact force reduction mechanism to reduce the contact force when the contact portion 111 contacts the medium P. Therefore, the printer 1 of this embodiment, by using the buffer portion 110A as a contact force reduction mechanism, can suppress the violent collision between the medium P and the conveyor roller pair 31 during the oblique movement of the corrected medium P, and can also suppress the violent collision between the medium P and the contact portion 111 of the buffer portion 110A.
[0075] Furthermore, as described above, the buffer portion 110A includes a torsion coil spring 122 that applies force to the abutment portion 111 in the opposite direction to the conveying direction A. In this way, by applying force to the abutment portion 111 in the opposite direction to the conveying direction A through an elastic member such as the torsion coil spring 122, for example, the medium P can be appropriately decelerated, such as... Figure 2 As indicated, the contact portion 111 is returned to its initial position, i.e., the position where the contact portion 111 begins to contact the medium P. It should be noted that in this embodiment, a torsion coil spring 122 is used as an elastic component, but an elastic component other than the torsion coil spring 122 may also be used as an elastic component.
[0076] Here, the buffer section 110A is as follows Figure 2 as well as Figure 4 As shown, a flexible member 111a is provided at the position in contact with the medium P in the contact portion 111. By providing a structure with a flexible member 111a in this way, a structure that appropriately decelerates the medium P can be easily or cost-effectively formed, for example. It should be noted that there are no particular limitations on the type or structure of the flexible member; for example, a structure can be used where the position of the contact portion 111 in contact with the medium P is made of flexible resin, or a structure can be used where a cushioning member such as a sponge is attached to the position in contact with the medium P. Alternatively, the entire contact portion can be constructed using a cushioning member such as a sponge.
[0077] Here, it is also possible to have a flexible member 111a at the position in contact with the medium P, and also to have the abutment portion 111 as a flexible member. In this case, even without an elastic member such as a torsion spring 122, the abutment portion 111 can be returned to its initial position. In this way, by making the abutment portion 111 a flexible member, it is possible to easily or at low cost form a structure that appropriately decelerates the medium P and returns the abutment portion 111 to its initial position, that is, the position where the abutment portion 111 begins to abut with the medium P (the abutment start position).
[0078] Furthermore, as described above, in the printer 1 of this embodiment, the conveyor roller pair 31, which serves as the skew correction unit, is a roller pair having a first roller 311 and a second roller 312 opposite to the first roller 311. Therefore, in the printer 1 of this embodiment, skew correction can be achieved at the clamping points of the roller pair, and the medium can be conveyed from the roller pair to the recording conveyor path T1. That is to say, the conveyor roller pair 31, which serves as the skew correction unit, can also function as a conveyor for the medium P.
[0079] In addition, such as Figure 2 as well as Figure 4 As indicated, the contact portion 111 can rotate about the axis 101 of the first roller 311. That is, the contact portion 111 can rotate coaxially with the first roller 311. By adopting such a structure, the distance between the contact start position and the collision position can be shortened, where the contact start position is the position where the medium P begins to contact the contact portion 111, and the collision position is the position where the medium P collides with the conveyor roller pair 31. Therefore, the time from the start of contact between the medium P and the contact portion 111 to the collision with the conveyor roller pair 31 can be shortened, and the reduction in throughput can be suppressed. It should be noted that although the contact portion and the first roller 311 are coaxial, they do not necessarily rotate as a whole. Alternatively, a structure in which the contact portion 111 rotates coaxially with the second roller 312 can also be adopted. In this case, the roller at the position of the second roller 312 can be regarded as the first roller, and the roller at the position of the first roller 311 can be regarded as the second roller. That is to say, the contact part 111 can be a structure that rotates coaxially with a drive roller driven by a motor (not shown), or it can be a structure that rotates coaxially with a driven roller that contacts the drive roller and rotates accordingly.
[0080] In addition, such as Figure 3 as well as Figure 5As indicated, the first roller 311 is a toothed roller that contacts the medium P with its teeth 311a. In this way, at least one of the first roller 311 and the second roller 312 can be a toothed roller that contacts the medium P with its teeth. Generally, if a toothed roller is used as a skew correction section, the impact noise of the medium P is often relatively loud, but due to the buffer section 110, the noise emitted when correcting the skew of the medium P can be reduced. Furthermore, when the transport device is used in a recording device as in this embodiment, by making the first roller 311 a toothed roller, for example, it is possible to suppress the adhesion of ink already recorded on the medium P to the first roller 311 during double-sided recording. Additionally, as described above, when the roller at the position of the second roller 312 is considered the first roller and the roller at the position of the first roller 311 is considered the second roller, by making the second roller a toothed roller, it is possible to suppress the adhesion of ink already recorded on the medium P to the second roller during double-sided recording. In this way, by making at least one of the first roller 311 and the second roller 312 a toothed roller, it is possible to suppress the adhesion of ink already recorded on the medium P to the first roller 311 or the second roller 312 during double-sided recording.
[0081] In addition, such as Figure 3 as well as Figure 5 As shown, the printer 1 of this embodiment has a plurality of buffer portions 110A and the first roller 311 alternately arranged in the axial direction of the first roller 311. That is, a plurality of buffer portions 110A and the first roller 311 are alternately arranged in the axial direction of the first roller 311. Due to this structure, the skewness of the medium P can be appropriately corrected for various sizes of medium P, and the noise emitted when correcting the skewness of the medium P can be reduced. In particular, when using a larger medium P, by alternately arranging a plurality of buffer portions 110 and the first roller 311 in the axial direction of the first roller 311, the skewness of the medium P can be effectively and appropriately corrected, and the noise emitted when correcting the skewness of the medium P can be reduced. It should be noted that the phrase "having multiple buffer portions 110A and the first roller 311 alternately in the axial direction of the first roller 311" means that if there is a region where multiple buffer portions 110A and the first roller 311 alternately are arranged in the axial direction of the first roller 311, then it is not necessary for all the buffer portions 110A and the first roller 311 to be arranged alternately in the axial direction of the first roller 311.
[0082] like Figure 1As indicated, the printer 1 of this embodiment is provided with multiple conveying sections, including a conveyor belt 13, conveyor roller pairs 32, 35, 36, and 37, which further convey the medium P after it has been conveyed by the conveyor roller pair 31, which serves as a slant correction section. These correspond to the second conveying section that conveys the medium P further downstream than the slant correction section in the conveying direction A. Here, the printer 1 of this embodiment is adjusted such that the third conveying speed is faster than the second conveying speed, which is the conveying speed of the medium P based on these second conveying sections after the slant correction section has corrected the slant. By adopting such a structure, it is possible to reduce the noise generated when correcting the slant of the medium P and suppress the decrease in throughput due to the recovery of the conveying speed of the subsequent medium P. It should be noted that in this embodiment, the third conveying speed is adjusted to be the same as the first conveying speed, but it is acceptable if the third conveying speed is faster than the second conveying speed. The third conveying speed can be faster than the first conveying speed, the same as the first conveying speed, or slower than the first conveying speed.
[0083] Example 2
[0084] Hereinafter, referring to printer 1 of embodiment 2, Figure 6 Please provide an explanation. Figure 6 It is the printer 1 in Embodiment 1 Figure 2 The corresponding figure. The printer 1 of this embodiment is the same as the printer 1 of Embodiment 1, except for the structure described below. Specifically, only the structure of the buffer portion 110 differs from that of the printer 1 of Embodiment 1. More specifically, the buffer portion 110B has a different shape than the buffer portion 110A of Embodiment 1, having a different shape for the abutment portion 111. This is the only difference between this embodiment and the printer 1 of Embodiment 1. Therefore, the printer 1 of this embodiment has the same features as the printer 1 of Embodiment 1, except for the details described below. Therefore, Figure 6 Structural components common to those in Embodiment 1 described above are shown using the same reference numerals, and detailed descriptions are omitted.
[0085] like Figure 2 As shown, in the buffer section 110A of Embodiment 1, the contact section 111 at the contact start position is structured to contact the medium P in such a way that it is slightly perpendicular to the direction from the end section 111b toward the base section 111c relative to the transport direction A of the medium P. On the other hand, as Figure 6As indicated, in the buffer section 110B of this embodiment, the contact portion 111 at the contact start position is configured to contact the medium P such that it forms an acute angle from the end portion 111b toward the base portion 111c relative to the transport direction A of the medium P. Alternatively, in the buffer section 110B of this embodiment, the contact portion 111 extends from the base portion 111c to the end portion 111b that contacts the medium P, and the end portion 111b extends downstream of the base portion 111c in the transport direction A. Because of this structure, the printer 1 of this embodiment can suppress the transported medium P from accidentally colliding violently with the contact portion 111, thus preventing a louder collision noise. Furthermore, by employing this structure, it is possible to prevent the transport of the medium P from being obstructed by the contact portion 111.
[0086] Example 3
[0087] Hereinafter, referring to printer 1 of embodiment 3, Figure 7 The following explanation will be provided. Except for the structure described below, the printer 1 of this embodiment is the same as the printer 1 of Embodiments 1 and 2. Specifically, only the structure of the buffer section 110 differs from that of the printer 1 of Embodiments 1 and 2. Therefore, the printer 1 of this embodiment has the same features as the printer 1 of Embodiments 1 and 2, except for the details described below. Figure 7 The structural components that are common to Embodiments 1 and 2 above are shown with the same reference numerals, and detailed descriptions are omitted.
[0088] The buffer portion 110A of Embodiment 1 and the buffer portion 110B of Embodiment 2 have an elastic member, namely a torsion coil spring 122, as a force-reducing mechanism. However, the present invention may also have a structural member other than an elastic member as a force-reducing mechanism. Therefore, as Figure 7As shown, the buffer section 110C of this embodiment has a damper 130 as a contact force reduction mechanism. The damper 130 is connected to the contact section 111 and causes the movement of the contact section 111 in the conveying direction A to be attenuated. In this way, even with the damper 130 as a contact force reduction mechanism, the medium P can be appropriately decelerated from the first conveying speed V1 to the second conveying speed V2 by means of the damper 130. It should be noted that the structure of this embodiment can be regarded not only as the buffer section 110C itself being a contact force reduction mechanism, but also as the buffer section 110C having the damper 130 as a contact force reduction mechanism. Here, in this embodiment, the buffer 110C, along with the medium P being conveyed at a second conveying speed V2, causes the contact portion 111 to move from an initial position (the contact start position) to a clamping position of the conveying roller pair 31 in the conveying path of the medium P. After the contact portion 111 reaches the clamping position of the conveying roller pair 31, it returns to the contact start position by passing through a position away from the conveying path. However, if the structure is such that the movement of the contact portion 111 in the conveying direction A is attenuated by a damper, the structure is not limited to the above.
[0089] Example 4
[0090] Hereinafter, referring to printer 1 of embodiment 4, Figure 8 Please provide an explanation. Figure 8 It is the printer 1 in Example 3 Figure 7 The corresponding figure. The printer 1 of this embodiment is the same as the printer 1 of Embodiments 1 to 3, except for the structure described below. Specifically, only the structure of the buffer section 110 differs from that of the printer 1 of Embodiments 1 to 3. Therefore, the printer 1 of this embodiment has the same features as the printer 1 of Embodiments 1 to 3, except for the details described below. Therefore, Figure 8 The structural components common to those in Embodiments 1 to 3 above are shown with the same reference numerals, and detailed descriptions are omitted.
[0091] like Figure 8As shown, the buffer portion 110D of this embodiment has a solenoid 140 as a contact force reduction mechanism. The solenoid 140 has a three-dimensional coil 141 and a plunger 142 inserted into the three-dimensional coil 141 and connected to the contact portion 111. By energizing the three-dimensional coil 141, the plunger 142 moves together with the contact portion 111 relative to the three-dimensional coil 141. Alternatively, the buffer portion 110D of this embodiment has a solenoid 140 as a displacement portion, which causes the contact portion 111 to move from the contact start position where the contact portion 111 contacts the medium P to a retraction position where the contact portion 111 does not contact the medium P. Then, the solenoid 140 is configured such that when the contact portion 111 moves from the contact start position to the retraction position, it can move in the transport path of the medium P such that the transport speed of the medium P is slower than the first transport speed, and the contact portion 111 can move in the opposite direction of the transport direction A such that the contact portion 111 passes through a position away from the transport path, and return from the retraction position to the contact start position.
[0092] Because of its structure, the buffer section 110D in this embodiment can appropriately decelerate the medium P and return the contact section 111 to its initial position, i.e., the contact start position where the contact section 111 and the medium P begin to contact. It should be noted that in this embodiment, the solenoid 140 is structured such that when the contact section 111 is moved from the contact start position to the retraction position by energizing it, the contact section 111 moves at a second conveying speed equal to the conveying speed of the medium P. However, it can also be configured such that the contact section 111 is energized only when returning from the retraction position to the contact start position, and not energized when moving from the contact start position to the retraction position, and the contact section 111 moves at a second conveying speed equal to the conveying speed of the medium P through frictional force accompanying the movement of the contact section 111 and the back electromotive force of the solenoid. Furthermore, there is no limitation on the speed at which the contact portion 111 moves from the contact start position to the retraction position. If the conveying speed is slower than the first conveying speed, the moving speed of the contact portion 111 can be faster than the conveying speed of the medium, slower than the conveying speed of the medium, or the same as the conveying speed of the medium.
[0093] Furthermore, this embodiment features a structure where the contact portion 111 moves linearly along the conveying direction A via the solenoid 140. However, it is also possible to design a structure using a displacement portion other than the solenoid 140, where the contact portion 111 does not move linearly but rotates about a direction intersecting the conveying direction A. It should be noted that the structure of this embodiment can be considered not only as a contact force reduction mechanism itself, but also as a structure where the buffer portion 110D has a displacement portion (soleoid 140) that functions as a contact force reduction mechanism. Furthermore, if the structure reduces the conveying speed of the medium by the displacement portion, the structure is not limited to the above-described structure.
[0094] Example 5
[0095] Hereinafter, referring to printer 1 of embodiment 5, Figure 9 The following explanation will be provided. The printer 1 of this embodiment is the same as the printer 1 of Embodiments 1 to 4, except for the structure described below. Specifically, only the structure of the slant correction mechanism 100 differs from that of the printer 1 of Embodiments 1 to 4. Therefore, the printer 1 of this embodiment has the same features as the printer 1 of Embodiments 1 to 4, except for the details described below. Figure 9 The structural components common to those in Embodiments 1 to 4 above are shown with the same reference numerals, and detailed descriptions are omitted.
[0096] In printer 1 of embodiments 1 to 4, the transport roller pair 31 also functions as a slant correction section. On the other hand, printer 1 of this embodiment... Figure 9As indicated, the grid portion 150 serves as a slant correction unit. Furthermore, the grid portion 150 is configured to be displaceable to a collision position S1 and a passage position S2, where the collision position S1 (indicated by a solid line) is the position where the transported medium P collides, and the passage position S2 (indicated by a dashed line) is the position where the transported medium P passes through. With the grid portion 150 positioned at the collision position S1, the transported medium P collides with the grid portion 150, correcting the slant of the transported medium P. Then, by setting the grid portion 150 to the passage position S2, the slanted medium P is transported downstream in the transport direction A. With this configuration, the printer 1 of this embodiment, in its slant correction structure using the grid portion 150, can reduce the noise emitted when correcting the slant of the medium P. It should be noted that in the printer 1 of this embodiment, the grid portion 150 is configured to be displaceable to the collision position S1 and the retraction position S2 by rotating about the axis 151. In detail, the gate portion 150 is structured such that the oblique movement of the medium P is corrected by the collision of the medium P at the collision position S1, and then, accompanied by the conveying force of the medium P based on the first conveying section such as the feed roller pair 25, the medium P moves to the passing position S2 in an abutting state. However, it is not limited to such a structure. For example, it can be configured to use a motor or the like to rotate the gate portion 150, or it can be configured to be able to be displaced to the collision position S1 and the passing position S2 by linear movement.
[0097] In this embodiment of printer 1, the gate portion 150 is designed to rotate about axis 151 to move to the collision position S1 and the passage position S2. The buffer portion 110E, which has the same shape as the buffer portion 110A in embodiment 1, is not located on the axis 101 of the conveyor roller pair 31, but on the axis 151 of the gate portion 150. Alternatively, the gate portion 150 can rotate about the Y-axis direction (intersecting the conveying direction A) to move to the collision position S1 and the passage position S2, and the contact portion 111 of the buffer portion 110E can rotate coaxially with the gate portion 150. That is, in this embodiment of printer 1, the medium P conveyed at a first conveying speed first contacts the contact portion 111, and is conveyed in a state of contact with the contact portion 111, reaching a second conveying speed. Then, the medium P conveyed at the second conveying speed collides with the gate portion 150 at the collision position S1, correcting its skewed movement. Then, it is further conveyed in a state of contact with the contact portion 111 and the gate portion 150. Therefore, the printer 1 of this embodiment can shorten the distance L1 between the contact start position and the collision position S1, where the contact start position is the position where the medium P begins to contact the contact portion 111 and the collision position S1 is the position where the medium P collides with the gate portion 150. This can shorten the time from when the medium P starts to contact the contact portion 111 to when it collides with the gate portion 150, and can suppress the decrease in throughput.
[0098] It should be noted that it is desirable for the contact portion 111 and the gate portion 150 to be constructed separately. For example, if a buffer member such as a sponge is integrally provided to the gate portion 150, there is a risk that the accuracy of the slant correction of the medium P colliding with the gate portion 150 will be reduced due to the buffer member. Therefore, by providing the contact portion 111 separately from the gate portion 150 so that it contacts the medium P at a location upstream of the gate portion 150, the reduction in the accuracy of the slant correction of the medium P can be suppressed. However, it is possible to configure the structure such that the contact portion 111 is provided on the gate portion 150, as in this embodiment. In this case, the structure can be configured such that: first, the contact portion 111 retracts upon contact with the transported medium P, and then, after the medium P collides with the gate portion 150, the gate portion 150 retracts.
[0099] Furthermore, as described above, the gate portion 150 can be rotated about the Y-axis to move to the collision position S1 and the passage position S2. Here, the abutment portion 111 is subjected to a first force in the opposite direction of the transport direction A by a force-applying portion (not shown), and the gate portion 150 is subjected to a second force in the opposite direction of the transport direction A by a force-applying portion (not shown). Moreover, the first force is smaller than the second force. Because the printer 1 of this embodiment has such a structure, for example, it can avoid the abutment portion 111 colliding with the medium P and stopping in a way that pushes the medium P back, and it can reduce the noise emitted when correcting the oblique movement of the medium P. Because of this structure, if the medium P is transported to a position where it does not contact the gate portion 150 and the abutment portion 111, the abutment portion 111 returns to its initial position as the gate portion 150 returns to the collision position S1.
[0100] This invention is not limited to the embodiments described above. Needless to say, various modifications can be made within the scope of the invention as described in the patent application, and these modifications are also included within the scope of this invention. For example, it is not limited to printers, but can also be applied to scanners, intermediate units between various devices, and conveying devices in trimmers, etc.
Claims
1. A conveying device for conveying a medium, characterized by comprising: a skew correction section that corrects skew of the medium by collision with the medium being conveyed; a first conveying section that conveys the medium to the skew correction section; and a buffer section that is provided between the first conveying section and the skew correction section in a conveying direction of the medium, and has an abutting section that is capable of abutting against the medium, in the buffer section, a second conveying speed is slower than a first conveying speed, the first conveying speed being a conveying speed of the medium on an upstream side of the buffer section in the conveying direction, the second conveying speed being a conveying speed of the medium at the time of collision with the skew correction section after the medium has abutted against the abutting section, in the buffer section, the abutting section is configured so as not to cause a collision with the medium that is strong enough to correct skew of the medium.
2. The conveying device according to claim 1, characterized by comprising: the buffer section has an abutting force reduction mechanism that reduces an abutting force at the time of abutment of the abutting section against the medium.
3. The conveying device according to claim 2, characterized by comprising: the abutting force reduction mechanism has an elastic member that applies a force to the abutting section in a direction opposite to the conveying direction.
4. The conveying device according to claim 2, characterized by comprising: the abutting force reduction mechanism has a damper that attenuates movement of the abutting section in the conveying direction.
5. The conveying device according to claim 2, characterized by comprising: the abutting force reduction mechanism has a displacement section that moves the abutting section from an abutment start position at which the abutting section abuts against the medium to a retreat position at which the abutting section does not abut against the medium, the displacement section is configured so as to be capable of moving the abutting section from the abutment start position to the retreat position in such a manner that a conveying speed of the medium becomes a conveying speed that is slower than the first conveying speed, and capable of returning the abutting section from the retreat position to the abutment start position.
6. The conveying device according to claim 2, characterized by comprising: the abutting force reduction mechanism has a flexible member.
7. The conveying device according to any one of claims 1 to 6, characterized by comprising: the skew correction section is a roller pair that has a first roller and a second roller that opposes the first roller.
8. The conveying device according to claim 7, characterized by comprising: the abutting section is capable of rotating coaxially with the first roller.
9. The conveying device according to claim 7, characterized by comprising: at least one of the first roller and the second roller is a toothed roller that contacts the medium with a tooth portion.
10. The conveying device according to claim 7, characterized by comprising: the buffer section and the first roller are alternately provided with a plurality of the buffer sections in a shaft direction of the first roller.
11. The conveying device according to any one of claims 1 to 6, characterized by comprising: The skew correction portion is a gate portion that is displaced to a collision position at which the conveyed medium collides and a passing position at which the conveyed medium passes.
12. The conveying device according to claim 11, wherein the gate portion is rotatable about a rotation axis that intersects the conveying direction to be displaced to the collision position and the passing position, the abutting portion is coaxially rotatable with the gate portion.
13. The conveying device according to claim 3, wherein the skew correction portion is a gate portion that is displaced to a collision position at which the conveyed medium collides and a passing position at which the conveyed medium passes, the gate portion is rotatable about a rotation axis that intersects the conveying direction to be displaced to the collision position and the passing position, the abutting portion is forced by the abutting force reduction mechanism in a direction opposite to the conveying direction with a first applied force, the gate portion is forced in a direction opposite to the conveying direction with a second applied force, the first applied force is smaller than the second applied force.
14. The conveying device according to any one of claims 1 to 6, wherein the abutting portion is disposed extending from a base end portion to a tip end portion that contacts the medium, the tip end portion is disposed extending toward a downstream side of the conveying direction with respect to the base end portion.
15. The conveying device according to any one of claims 1 to 6, wherein the conveying device has a second conveying portion that conveys the medium more downstream than the skew correction portion in the conveying direction, a third conveying speed is faster than the second conveying speed, the third conveying speed being a conveying speed of the medium based on the second conveying portion after the skew correction by the skew correction portion.
16. A recording apparatus for recording on a medium, characterized by comprising: the recording device has: the conveying device according to any one of claims 1 to 6; and a recording portion that records the medium conveyed by the conveying device. the recording device has: the conveying device according to any one of claims 1 to 6; and a recording portion that records the medium conveyed by the conveying device.
Citation Information
Patent Citations
Conveyance device
JP2020189731A
Medium conveying device and image reading device
CN114338937A
Image forming device
JP2007238199A