Media transport device and recording device

Abstract

To provide an easy-to-use medium conveyance device, and a recording device.SOLUTION: A feeding cassette 1600 whose first direction is a direction perpendicular to an attachment / detachment direction, and whose second direction is a direction perpendicular to the attachment / detachment direction and the first direction comprises a contact part 300 coming into contact with a roller separation mechanism part 210, and having a first inclined surface 301 inclined along a straight line including a component in the attachment / detachment direction and a component in the first direction. The roller separation mechanism part 210 includes a part 200 to be contacted coming into contact with the contact part 300, and haing a second inclined surface 201 that is inclined along a straight line including a component in the attachment / detachment direction and a component in the second direction.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a medium conveyance device and a recording device.

Background Art

[0002] In Patent Document 1, when the paper feed tray is pulled out from the apparatus main body, the contact portion is pushed back, and a nudge roll that functions as a conveyance roller for conveying paper and is connected to the contact portion moves in a direction away from the paper in the paper feed tray, thereby suppressing a paper jam in the apparatus main body. A paper feeding device is disclosed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the technique described in Patent Document 1, there is a problem that the load generated when returning the nudge roll to its original position is not considered when inserting the paper feed tray into the apparatus main body, such as after setting paper in the paper feed tray. That is, it is required that the paper feed tray can be lightly attached to the apparatus main body.

Means for Solving the Problems

[0005] The media transport device comprises a main body, a feed cassette detachably mounted to the main body, a transport roller that contacts the upper surface of the media placed on the feed cassette and transports the media, and a biasing unit that biases the transport roller in a direction away from the media, having a rotation center along the attachment / detachment direction of the feed cassette, and rotating in conjunction with the insertion operation of the feed cassette to contact the media, and rotating in conjunction with the removal operation of the feed cassette to move the transport roller away from the media. The feeding cassette comprises a roller separation mechanism and a roller separation mechanism, wherein the direction perpendicular to the attachment / detachment direction is designated as the first direction, and the direction perpendicular to the attachment / detachment direction and the first direction is designated as the second direction, the feeding cassette comprises a contact portion that abuts the roller separation mechanism and has a first inclined surface that is inclined along a straight line including the components of the attachment / detachment direction and the first direction, and the roller separation mechanism comprises a contacted portion that abuts the roller separation mechanism and has a second inclined surface that is inclined along a straight line including the components of the attachment / detachment direction and the second direction.

[0006] The recording device comprises the media transport device described above, and a recording unit that performs recording on the medium transported by the media transport device. [Brief explanation of the drawing]

[0007] [Figure 1] A perspective view showing the configuration of the recording device. [Figure 2] A cross-sectional view showing the configuration of the recording device. [Figure 3] A perspective view showing the configuration of the feed cassette. [Figure 4] Figure 3 is a perspective view showing a magnified view of section C of the feeding cassette. [Figure 5] Figure 4 is a plan view of the feed cassette and roller separation mechanism, seen from above. [Figure 6] A perspective view showing the configuration of the roller separation mechanism. [Figure 7] A perspective view showing the configuration of the transport roller unit. [Figure 8] A side view showing the configuration of the roller separation mechanism. [Figure 9] Side view showing the configuration of the roller separation mechanism section. [Figure 10A] Perspective view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 10B] Perspective view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 10C] Perspective view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 11A] Plan view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 11B] Plan view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 11C] Plan view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 12A] Side view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 12B] Side view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 12C] Side view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 13A] Side view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 13B] Side view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 13C] Side view showing the operation of the feeding cassette and the roller separation mechanism section. [Figure 14] Diagram explaining the load generated in the feeding cassette and the roller separation mechanism section. [Figure 15] Diagram explaining the load generated in the feeding cassette and the roller separation mechanism section. [Figure 16] Diagram explaining the rotational moment generated in the roller separation mechanism section. [Figure 17] Perspective view showing the configuration of the roller separation mechanism section of the modification example. [Figure 18] Plan view showing the configuration of the roller separation mechanism section of the modification example. [Figure 19] Plan view showing the configuration of the feeding cassette of the modification example. [Figure 20]Perspective view showing the configuration of the feeding cassette of the modification example. [Figure 21] Perspective view showing the configuration around the roller separation mechanism section. [Figure 22] Perspective view showing the configuration of the conveyance roller unit.

Mode for Carrying Out the Invention

[0008] In the following figures, three axes orthogonal to each other will be described as the X-axis, Y-axis, and Z-axis. The direction along the X-axis is the "X direction", the direction along the Y-axis is the "Y direction", and the direction along the Z-axis is the "Z direction". The direction of the arrow is the + direction, and the direction opposite to the + direction is the - direction. Note that the +Z direction may also be referred to as "up" or "above", the -Z direction may be referred to as "down" or "below", and looking from the +Z direction is also referred to as a plan view or planar. Also, the surface on the + side in the Z direction will be described as the upper surface, and the surface on the - side in the Z direction, which is the opposite side, will be described as the lower surface. Also, the Z direction is also referred to as the vertical direction. Also, the direction along the Y direction is the attachment / detachment direction, the direction along the X direction is the first direction, and the direction along the Z direction orthogonal to the attachment / detachment direction and the first direction is also referred to as the second direction.

[0009] Note that the attachment / detachment direction refers to the direction in which the feeding cassette 1600 is inserted into the apparatus main body 1100 and the direction in which the feeding cassette 1600 is removed from the apparatus main body 1100. The feeding cassette 1600 may be completely removed from the apparatus main body 1100, or a part of the feeding cassette 1600 may be removed from the apparatus main body 1100.

[0010] First, while referring to FIG. 1, the configurations of the medium conveyance device 1000a and the printer 1000 will be described.

[0011] As shown in FIG. 1, the printer 作為記録装置1000 performs recording by discharging ink onto the paper 1500 as a medium. The printer 1000 includes an apparatus main body 1100 and a scanner unit 1200 disposed above the apparatus main body 1100.

[0012] An operation panel 1300 is located on the -Y side of the main body 1100 of the device. The main body 1100 has an open area 1400 in part on the -Y side and part on the +X side. The open area 1400 is the area from which the recorded and ejected paper 1500 is removed. The bottom surface of the open area 1400 is used as an output tray 1410.

[0013] A paper feed cassette 1600 for storing paper 1500 is located on the lower side of the device body 1100 in the -Y direction. The paper feed cassette 1600 can be pulled out in the -Y direction relative to the device body 1100 and inserted in the +Y direction. In other words, the paper feed cassette 1600 is detachably positioned relative to the device body 1100.

[0014] Next, the media transport path of printer 1000 will be explained with reference to Figure 2. In Figure 2, the media transport path is shown as a dashed line.

[0015] Above the paper feed cassette 1600, a transport roller 100 is positioned to feed the contained paper 1500 in the -X direction. That is, the transport roller 100 is positioned so as to be able to contact the upper surface of the paper 1500. Also, on the -X side of the transport roller 100, a pair of feed rollers 501 and a pair of transport rollers 502 are provided to feed the paper 1500 that has been fed in the -X direction diagonally upward. The feed roller pair 501 is composed of, for example, a drive roller and a driven roller that rotates in contact with the drive roller.

[0016] On the -X side of the feed roller pair 501 are the reversing roller 503 and the driven roller 504, as well as the supply roller 505 and the separation roller 506. The supply roller 505 and the separation roller 506 are a pair of rollers that feed the paper 1500 from a supply tray (not shown).

[0017] The paper 1500 fed from the transport roller pair 502 is sent between the line head 601 and the transport belt 602, that is, to the recording position facing the line head 601. The media transport path from the transport roller pair 502 to the transport roller pair 507 is referred to as the recording transport path T1.

[0018] The line head 601 constitutes the head unit 600, which acts as the recording unit. The line head 601 ejects ink onto the surface of the paper 1500 to perform recording.

[0019] Below the output tray 1410 is an ink storage section 603 containing ink of each color. Additionally, a waste ink storage section 604 for storing waste ink is located diagonally below the head unit 600 in the X direction.

[0020] After one side of the paper 1500 has been recorded on by the line head 601, it is further fed upward by the transport roller pair 507. Above the transport roller pair 507, a flap 605 is provided to switch the transport direction of the paper 1500.

[0021] If the paper 1500 is to be discharged as is, the transport path of the paper 1500 is switched by the flap 605 to face the upper transport roller pair 508. The paper 1500 is then discharged towards the discharge tray 1410 by the transport roller pair 508.

[0022] When recording is to be performed on both sides of the paper 1500, the transport direction of the paper 1500 is directed towards branching position K1 by the flap 605. The paper 1500 passes through branching position K1 and enters the switchback path T2. The switchback path T2 is equipped with transport roller pairs 509 and 510. Once the paper 1500 enters the switchback path T2, it is transported upward by the transport roller pairs 509 and 510, and when the lower edge of the paper 1500 passes branching position K1, the rotation direction of the transport roller pairs 509 and 510 is switched, and the paper 1500 is transported downward.

[0023] A reversal path T3 is connected to the switchback path T2. In this embodiment, the reversal path T3 is a medium transport path that goes from the branching position K1 through the transport roller pair 511, 512 to the reversal roller 503.

[0024] The paper 1500, transported downward from branching position K1, is carried by transport roller pair 511, 512 to the reversing roller 503, where it is curved and reversed, and then sent towards transport roller pair 502.

[0025] When the paper 1500 is again fed to a position facing the line head 601, the other side faces the line head 601 relative to the side on which recording has already been done. This allows the line head 601 to record on the other side of the paper 1500.

[0026] Next, referring to Figures 3 to 9, the operational relationship between the transport roller 100, the roller separation mechanism 210, and the feed cassette 1600, which constitute the media transport device 1000a, will be explained.

[0027] As shown in Figures 3 and 4, the feed cassette 1600 is provided with a contact portion 300 on the +Y direction side that contacts the roller separation mechanism 210. The contact portion 300 has a first inclined surface 301 that is inclined along a straight line that includes a component in the attachment / detachment direction which is in the direction along the Y direction and a component in the first direction which is in the direction along the X direction.

[0028] As shown in Figure 3, a transport roller unit 110 having a transport roller 100, as shown in Figure 7, is positioned on the -X side of the feed cassette 1600. The transport roller unit 110 is attached to the rotation axis 110a of the feed roller. The transport roller 100 is attached to a rotation axis in the transport roller unit 110 that has a rotation center along the attachment / detachment direction of the feed cassette 1600.

[0029] As the feed cassette 1600 is inserted, the transport roller unit 110 rotates around the rotation axis 110a, causing the transport roller 100 to come into contact with the paper 1500. As the feed cassette 1600 is removed, the transport roller unit 110 rotates around the rotation axis 110a, causing the transport roller 100 to move away from the paper 1500.

[0030] A pin 120 extending in the +Y direction is provided on the +Y direction side of the transport roller unit 110. The transport roller unit 110 is equipped with a second biasing unit 402 (see Figure 22), which biases the transport roller 100 in a direction that contacts the paper 1500, with the rotation axis 110a as the center of rotation. The second biasing unit 402 is, for example, a torsion spring attached to the rotation axis 110a. The provision of the second biasing unit 402 allows the transport roller 100 to contact the paper 1500 appropriately.

[0031] As shown in Figure 4, a roller separation mechanism 210 is located on the +Y side of the transport roller unit 110 via a rotating shaft 130. A contact portion 300 that contacts the roller separation mechanism 210 is provided on the +Y side of the feed cassette 1600.

[0032] As shown in Figure 6, the roller separation mechanism 210 is rotatably mounted around the rotation axis 130. The roller separation mechanism 210 is provided on the +X side and has a contact portion 200 that contacts the contact portion 300 of the feed cassette 1600, and a pin contact portion 410 that contacts the pin 120 of the transport roller unit 110, provided on the -X side. The contact portion 200 has a second inclined surface 201 that is inclined along a straight line that includes a component in the attachment / detachment direction which is in the direction along the Y direction and a component in the second direction which is in the direction along the Z direction.

[0033] The roller separation mechanism 210 is equipped with a first biasing unit 401 (see Figure 21) which is biased to rotate counterclockwise in Figure 6. The first biasing unit 401 is, for example, a torsion spring attached to the rotating shaft 130. That is, the roller separation mechanism 210 is biased by the second biasing unit 402 so that the contacted portion 200 rotates in the -Z direction around the rotating shaft 130.

[0034] The biasing force of the first biasing unit 401 is set to be greater than the biasing force of the second biasing unit 402. By setting the biasing force of the first biasing unit 401 to be greater than the biasing force of the second biasing unit 402, the roller separation mechanism 210 can rotate the transport roller unit 110 in a direction that separates the transport roller 100 from the paper 1500.

[0035] Figure 4 shows the state in which the transport roller 100 is separated from the paper 1500. At this time, the first biasing unit 401 causes the pin contact portion 410 of the roller separation mechanism 210 to lift the pin 120 of the transport roller unit 110.

[0036] When the feed cassette 1600 is inserted into the main body 1100, as shown in Figures 4 and 5, the contact portion 300 of the feed cassette 1600 comes into contact with the contact portion 200 of the roller separation mechanism 210. The first inclined surface 301 of the contact portion 300 and the second inclined surface 201 of the contact portion 200 come into contact along their respective inclined surfaces, causing the contact portion 200 of the roller separation mechanism 210 to rotate in the +Z direction around the rotation axis 130. As the roller separation mechanism 210 rotates, the pin contact portion 410 rotates in the -Z direction, and the transport roller unit 110 is displaced in the -Z direction. At this time, the roller separation mechanism 210 is biased by the second biasing portion 402 in the direction that separates the transport roller 100 from the paper 1500, so it can be rotated little by little in the opposite direction to the biased direction.

[0037] Therefore, when the feed cassette 1600 is inserted into the main body 1100 of the device, the transport roller 100 can be brought into contact with the paper 1500. In other words, the transport roller 100 can transport the paper 1500 to the line head 601, making it possible to record on the paper 1500.

[0038] Furthermore, by providing a first inclined surface 301 on the contact portion 300 of the feed cassette 1600 and a second inclined surface 201 on the contact portion 200 of the roller separation mechanism 210, the insertion load of the feed cassette 1600 can be reduced compared to the conventional method where no inclined surfaces are provided. For example, compared to the case where the second inclined surface 201 is provided only on the contact portion 200, by providing the first inclined surface 301 on the contact portion 300, the width D in the Y direction of the roller separation mechanism 210 can be reduced, as shown in Figure 8. Moreover, as shown in Figure 9, the width E in the X direction of the roller separation mechanism 210 can be reduced.

[0039] Next, the operation of the roller separation mechanism 210 will be explained in detail with reference to Figures 10A to 10C, 11A to 11C, 12A to 12C, and 13A to 13C.

[0040] First, in the process shown in Figure 10A, the feed cassette 1600 is inserted into the main body 1100 of the device along the insertion direction. The transport roller 100 is separated from the paper 1500 by the first biasing unit 401 which lifts the transport roller unit 110. The roller separation mechanism 210 is in a state where the contact portion 200 is lowered to the side of the contact portion 300. By inserting the feed cassette 1600, the first inclined surface 301 of the contact portion 300 of the feed cassette 1600 and the second inclined surface 201 of the contact portion 200 of the roller separation mechanism 210 begin to come into contact. This state is referred to as the first state.

[0041] Next, in the process shown in Figure 10B, when the feed cassette 1600 is further inserted, the contact portion 200 begins to lift along the first inclined surface 301 of the contact portion 300, around the rotation axis 130. As a result, one end of the transport roller unit 110 tilts in the -Z direction, and the transport roller 100 approaches the paper 1500. This state is referred to as the second state.

[0042] Next, in the process shown in Figure 10C, the feed cassette 1600 is inserted into the mounting position of the device body 1100. As a result, the contact portion 200 of the roller separation mechanism 210 rides up onto the upper surface 300a of the contact portion 300 of the feed cassette 1600. In addition, one end of the transport roller unit 110 is further tilted in the -Z direction. As a result, the transport roller 100 comes into contact with the paper 1500. This state is referred to as the third state.

[0043] Figures 11A, 12A, and 13A show the first state described above as viewed from various directions. Figures 11B, 12B, and 13B show the second state described above as viewed from various directions. Figures 11C, 12C, and 13C show the third state described above as viewed from various directions.

[0044] In Figure 13A, it is preferable that the distance F between the position F1 where the contacted portion 200 and the contacted portion 300 contact each other in the first direction (X direction) and the rotation center F2 of the rotation axis 130 is longer than the distance G between the point of application G1 where the pin contact portion 410 of the roller separation mechanism 210 acts on the pin 120 of the transport roller unit 110 and the rotation center G2. With this configuration, since the distance F between the position F1 where the contacted portion 200 and the contacted portion 300 contact each other and the rotation center F2 is longer, when inserting the feed cassette 1600 into the device body 1100, the roller separation mechanism 210, which is biased in the direction that separates the transport roller 100 from the paper 1500, can be rotated with less force in the opposite direction to the biased direction.

[0045] Furthermore, in Figure 13C, in the state where the feeding cassette 1600 is mounted on the device body 1100, i.e., the third state, it is preferable that the contact portion 200 presses against the contact portion 300 from the vertical direction. With this configuration, since the contact portion 200 presses against the contact portion 300 from the vertical direction, no force is applied to the feeding cassette 1600 from the roller separation mechanism 210 in the direction of attachment and detachment of the feeding cassette 1600 on the device body 1100, so that the feeding cassette 1600 can be stopped at the mounting position on the device body 1100.

[0046] Next, with reference to Figures 14 to 16, the loads and moments generated at the contact portion 300 of the feed cassette 1600 and the contacted portion 200 of the roller separation mechanism 210 will be explained.

[0047] First, as shown in Figure 14, we will determine the force F generated in the direction of the solid arrow on the roller separation mechanism 210 when the contact portion 300 of the feed cassette 1600 is inserted while in contact with the contacted portion 200 of the roller separation mechanism 210. Let F be the insertion load of the feed cassette 1600. Let θ be the angle of the first inclined surface 301 of the contact portion 300 of the feed cassette 1600. The load on the roller separation mechanism 210 in the direction of the solid arrow at this time is F·TANθ. Note that, as shown in Figure 14, the angle θ refers to the acute angle formed by the intersection of the first inclined surface 301 and the X-axis.

[0048] Next, as shown in Figure 15, we determine the force F generated in the direction of the solid arrow on the roller separation mechanism 210 when the contact portion 300 of the feed cassette 1600 is inserted while in contact with the contact portion 200 of the roller separation mechanism 210. Let F be the insertion load of the feed cassette 1600. Let α be the angle of the second inclined surface 201 of the contact portion 200 of the roller separation mechanism 210. The load on the roller separation mechanism 210 in the direction of the solid arrow at this time is F·TANα. Note that, as shown in Figure 15, angle α refers to the acute angle formed by the intersection of the second inclined surface 201 and the Y-axis.

[0049] Next, as shown in Figure 16, the rotational moment M of the roller separation mechanism 210 is determined. Length A is the distance from the rotation axis 130 to the contact portion 200 of the roller separation mechanism 210. Length B is the distance from the rotation axis 130 to the contact portion 200 of the roller separation mechanism 210 and the contact portion 300 of the feed cassette 1600. The rotational moment M is given by M = A·F·TANα + B·F·TANθ.

[0050] Compare this to the conventional case where the contact portion 300 of the feed cassette 1600 does not have a first inclined surface 301. The conventional rotational moment M is A·F·TANα. Therefore, it is possible to increase the rotational moment M compared to the conventional case, and the insertion load of the feed cassette 1600 can be reduced. As a result, the feed cassette 1600 can be inserted into the device body 1100 with little force. In addition, by reducing the required rotational load without relying on increasing the lever ratio from the rotating shaft 130 of the roller separation mechanism 210, the roller separation mechanism 210 can be made smaller.

[0051] As described above, the media transport device 1000a of this embodiment comprises a device body 1100, a feed cassette 1600 detachably mounted to the device body 1100, a transport roller 100 that contacts the upper surface of the paper 1500 placed on the feed cassette 1600 and transports the paper 1500, and a first biasing unit 401 that biases the transport roller 100 in a direction away from the paper 1500, has a rotation center along the attachment / detachment direction of the feed cassette 1600, rotates in conjunction with the insertion operation of the feed cassette 1600 to contact the paper 1500, and rotates in conjunction with the removal operation of the feed cassette 1600 to contact the transport roller The feeding cassette 1600 comprises a roller separation mechanism 210 that separates the roller 100 from the paper 1500, with the direction perpendicular to the attachment / detachment direction being designated as the first direction, and the direction perpendicular to the attachment / detachment direction and the first direction being designated as the second direction, and the feeding cassette 1600 comprising a contact portion 300 that abuts the roller separation mechanism 210 and has a first inclined surface 301 that is inclined along a straight line including the components of the attachment / detachment direction and the first direction, and the roller separation mechanism 210 comprising a contacted portion 200 that abuts the contact portion 300 and has a second inclined surface 201 that is inclined along a straight line including the components of the attachment / detachment direction and the second direction.

[0052] With this configuration, when the feed cassette 1600 is inserted into the main body 1100, the contact portion 300 having a first inclined surface 301 and the contacted portion 200 having a second inclined surface 201 come into contact along their respective inclined surfaces, thereby allowing the roller separation mechanism 210, which is biased in the direction that separates the transport roller 100 from the paper 1500, to rotate little by little in the opposite direction to the biased direction. As a result, the feed cassette 1600 can be pushed smoothly, and the feed cassette 1600 can be set into the main body 1100 with little force. Consequently, the transport roller 100 can be brought into contact with the paper 1500.

[0053] Furthermore, since the contact portion 300 is provided with a first inclined surface 301 and the contacted portion 200 is provided with a second inclined surface 201, a greater rotational moment M is generated to rotate the roller separation mechanism 210. Therefore, the insertion load of the feed cassette 1600 can be reduced without increasing the length of the roller separation mechanism 210, making it possible to reduce the size of the roller separation mechanism 210 and thus miniaturize the printer 1000.

[0054] Furthermore, in the media transport device 1000a of this embodiment, it is preferable that the distance F between the position F1 where the contacted portion 200 and the contacted portion 300 contact each other in the first direction and the rotation center F2 is longer than the distance G between the point of application G1 acting on the transport roller 100 in the roller separation mechanism 210 and the rotation center G2. With this configuration, since the distance F between the position F1 where the contacted portion 200 and the contacted portion 300 contact each other and the rotation center F2 is longer, when inserting the feed cassette 1600 into the device body 1100, the roller separation mechanism 210, which is biased in the direction that separates the transport roller 100 from the paper 1500, can be rotated with a weaker force in the opposite direction to the biased direction.

[0055] Furthermore, in the media transport device 1000a of this embodiment, when the feed cassette 1600 is mounted on the device body 1100, it is preferable that the contact portion 200 presses against the contact portion 300 from the vertical direction. With this configuration, since the contact portion 200 presses against the contact portion 300 from the vertical direction, no force is applied to the feed cassette 1600 from the roller separation mechanism 210 in the direction of attachment and detachment of the feed cassette 1600 on the device body 1100, so that the feed cassette 1600 can be stopped at the mounting position on the device body 1100.

[0056] Furthermore, the printer 1000 of this embodiment includes the media transport device 1000a described above, and a head unit 600 that records on the paper 1500 transported from the media transport device 1000a. With this configuration, since the media transport device 1000a is included, a user-friendly printer 1000 can be provided.

[0057] The following describes some variations of the embodiments described above.

[0058] As described above, the contact portion 200 of the roller separation mechanism 210 is not limited to having a second inclined surface 201, but may also be as shown in Figures 17 and 18. In the modified version of the roller separation mechanism 210a shown in Figures 17 and 18, the contact portion 200a is provided with a fourth inclined surface 202 in addition to the second inclined surface 201.

[0059] The fourth inclined surface 202 is an inclined surface with a different angle of inclination from the second inclined surface 201. Since the contact portion 200a is provided with both the second inclined surface 201 and the fourth inclined surface 202, when the feed cassette 1600 is inserted into the main body 1100 of the device, the movement speed of the transport roller 100 can be changed according to the amount of distance from the paper 1500. Note that it is not limited to two inclined surfaces 201 and 202, but may be composed of three or more inclined surfaces. Also, the shape of the inclined surface may be an arc or a sphere.

[0060] Thus, it is preferable that the contact portion 200 has a fourth inclined surface 202 that has a different angle of inclination from the second inclined surface 201. With this configuration, by having a fourth inclined surface 202 that has a different angle from the second inclined surface 201, that is, by providing steps on the inclination surface, the amount by which the transport roller 100 moves away from the paper 1500 can be changed for each step. In other words, the movement position and movement speed of the transport roller 100 can be changed according to the amount of insertion of the feed cassette 1600. This makes it possible to prevent the paper 1500 from jamming inside the device body 1100 when the feed cassette 1600 is attached or detached.

[0061] As described above, the contact portion 300 of the feeding cassette 1600 is not limited to having a first inclined surface 301, but may also be as shown in Figure 19. In the modified contact portion 300b, a third inclined surface 302 is provided in addition to the first inclined surface 301.

[0062] The third inclined surface 302 is inclined along a straight line that includes components in the attachment / detachment direction and the first direction, and is an inclined surface with a different angle of inclination from the first inclined surface 301. Since the contact portion 300b is provided with the first inclined surface 301 and the third inclined surface 302, when the feed cassette 1600 is inserted into the device body 1100, the movement speed of the transport roller 100 can be changed according to the amount of distance from the paper 1500. Note that it is not limited to two inclined surfaces 301 and 302, but may be composed of three or more inclined surfaces. Also, the shape of the inclined surface may be an arc or a sphere.

[0063] Thus, it is preferable that the contact portion 300 has a third inclined surface 302 that has a different angle of inclination from the first inclined surface 301. With this configuration, by having a third inclined surface 302 that has a different angle from the first inclined surface 301, that is, by providing a step on the inclination surface, the amount by which the transport roller 100 moves away from the paper 1500 can be changed depending on the position in which the contact portion 300 contacts the contacted portion 200. In other words, the movement position and movement speed of the transport roller 100 can be changed according to the amount of insertion of the feed cassette 1600. This makes it possible to prevent the paper 1500 from jamming inside the device body 1100 when the feed cassette 1600 is attached or detached.

[0064] Furthermore, it is preferable that the third inclined surface 302 is inclined along a straight line that includes a component in the attachment / detachment direction and a component in the first direction. With this configuration, the contacted portion 200 can be brought into contact with the first inclined surface 301 and the third inclined surface 302 little by little, which prevents a large force from being applied instantaneously to the contacted portion 200 and prevents damage to the contacted portion 300 and the contacted portion 200.

[0065] As shown in the modified example above, the contact portion 300b of the feeding cassette 1600 is not limited to having a first inclined surface 301 and a third inclined surface 302, but may also be as shown in Figure 20. In the modified example, the contact portion 300c is provided with a fifth inclined surface 303 having an inclined surface in the height direction, which is the -Z direction, in addition to the first inclined surface 301 and the third inclined surface 302.

[0066] The fifth inclined surface 303 is provided on the contact portion 300c, allowing the transport roller 100 to slowly contact the paper 1500. By adjusting the timing of the transport roller 100's contact with the paper 1500 in this way, the transport roller 100 can contact the paper 1500 during the insertion of the feed cassette 1600, or the transport roller 100 can remain in contact with the paper while the feed cassette is being inserted or removed, thereby preventing paper jams and paper remaining in the device body 1100. [Explanation of symbols]

[0067] 100...Conveyor roller, 110...Conveyor roller unit, 120...Pin, 130...Rotating shaft, 200...Contacted part, 200a...Contacted part, 201...Second inclined surface, 202...Fourth inclined surface, 210, 210a...Roller separation mechanism, 300...Contact part, 300a...Top surface, 300b, 300c...Contact part, 301...First inclined surface, 302...Third inclined surface, 303...Fifth inclined surface, 401...First biasing part, 402...Second biasing part, 410...Pin contact part, 501...Feeding roller pair, 502...Conveyor roller pair, 503...Reversing roller, 504...Driven roller, 50 5... Supply roller, 506... Separation roller, 507, 508, 509, 510, 511, 512... Transport roller pairs, 600... Head unit as recording unit, 601... Line head, 602... Transport belt, 603... Ink storage unit, 604... Waste liquid storage unit, 605... Flap, 1000... Printer as recording device, 1000a... Media transport device, 1100... Main unit, 1200... Scanner unit, 1300... Operation panel, 1400... Open area, 1410... Output tray, 1500... Paper as medium, 1600... Feeding cassette.

Claims

1. The main body of the device, A feeding cassette is detachably attached to the main body of the device, A conveying roller that contacts the upper surface of the medium placed on the aforementioned feeding cassette and conveys the medium, A roller separation mechanism is provided, which includes a biasing unit that biases the conveying roller in a direction away from the medium, has a rotation center along the attachment / detachment direction of the feeding cassette, rotates in conjunction with the insertion operation of the feeding cassette to contact the medium, and rotates in conjunction with the removal operation of the feeding cassette to separate the conveying roller from the medium, Equipped with, The first direction is defined as the direction perpendicular to the aforementioned attachment / detachment direction that is not vertical, and the second direction is defined as the vertical direction. The feeding cassette comprises a contact portion that contacts the roller separation mechanism, the contact portion having a first inclined surface that is inclined along a straight line including the component in the attachment / detachment direction and the component in the first direction, The roller separation mechanism comprises a contact portion that contacts the contact portion, the contact portion having a second inclined surface that is inclined along a straight line including the component in the attachment / detachment direction and the component in the second direction, in a media conveying device.

2. A media transport device according to claim 1, A media conveying device wherein, in the first direction, the distance between the position where the contacted portion and the contacted portion come into contact and the center of rotation is longer than the distance between the point of application acting on the conveying roller in the roller separation mechanism and the center of rotation.

3. A media transport device according to claim 1 or claim 2, A media transport device in which the contact portion presses against the contact portion from a vertical direction when the supply cassette is mounted on the main body of the device.

4. A media transport device according to any one of claims 1 to 3, The contact portion has a third inclined surface that is at a different angle of inclination from the first inclined surface, in a media transport device.

5. A media transport device according to claim 4, A media transport device wherein the third inclined surface is inclined along a straight line that includes the component in the attachment / detachment direction and the component in the first direction.

6. A media transport device according to any one of claims 1 to 5, The contact portion has a fourth inclined surface that is at a different angle of inclination from the second inclined surface, in a media transport device.

7. A media transport device according to any one of claims 1 to 6, A recording unit that records on the medium transported by the medium transport device, A recording device equipped with the following features.

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