JP5861422B2 - Recording device - Google Patents

Description

  The present invention relates to a recording apparatus that performs recording on a recording medium such as paper.

  Patent Document 1 is known as a technical document related to a recording apparatus. Patent Document 1 discloses an image forming apparatus including a main body 1a (housing) provided with a gear 40, a paper feed cassette 7 (medium accommodating portion) provided with a gear 35, and the like. In Patent Document 1, in order to suppress variation in the distance between the gears 35 and 40 when the paper feed cassette 7 is mounted on the main body 1a, the gear 35 is supported so as to be movable in the attachment / detachment direction of the paper feed cassette 7. Has proposed.

JP 2009-96590 A

  The inventors of the present application have noted that the following problems may occur when gears are provided in each of the housing and the medium accommodating portion as described above. That is, if the gear is rotated in a state where the medium accommodating portion is not completely attached to the housing and the gears are not completely engaged with each other, damage to the gears or abnormal noise due to contact between the gears may occur. With the configuration of Patent Literature 1, although the meshing failure of the gears in a state where the medium accommodating portion is completely attached to the housing can be suppressed, the above problem cannot be solved.

  The objective of this invention is providing the recording device which can suppress the damage and abnormal noise of the gear provided in each of a housing | casing and a medium accommodating part.

In order to achieve the above object, according to an aspect of the present invention, a recording unit that performs recording on a recording medium, a medium storage unit that stores the recording medium, the recording unit, and the medium storage unit are mounted A housing having a mounting portion to be mounted; positioning means for positioning the medium accommodating portion at a mounting position that is a predetermined position of the mounting portion; and a first portion provided in the housing to which driving from a drive source is transmitted. A gear, a second gear that is provided in the medium accommodating portion and meshes with the first gear of the medium accommodating portion disposed at the mounting position, and transmits the drive from the driving source to the driven portion; and recording a pair of rollers medium for conveying the recording medium so as to pass through the recording position facing the recording unit, before Symbol medium accommodated in the separating direction is a direction opposite to the mounting direction in which the medium container is mounted to the mounting portion function as a biasing means for biasing the part , And a pressing means for the pressed state the roller pair by applying a biasing force to at least one of the rollers of the roller constituting the roller pair when said medium accommodating portion is disposed in the mounting position , the pressure-contacting means, if the positioning of the medium container by the positioning means is released, to a position where the first gear and the second gear is disengaged from each other, moving the medium accommodating portion, said medium accommodating when the part is in the removing direction side than the mounting position, and wherein the Rukoto pressure contact state of the roller pair is released, the recording apparatus is provided.

  According to the above viewpoint, since the first gear and the second gear are separated from each other by the urging force of the urging means, it is possible to suppress the rotation of the gear in a state where the gears are not completely meshed with each other. Can be suppressed.

Furthermore , since the pressing means functions as the urging means, the configuration can be simplified compared to the case where the urging means and the pressing means are provided separately. In addition, when the medium accommodating portion is located on the side away from the mounting position, the pressure contact state of the roller pair is released, so that the operation of removing the recording medium jammed between the rollers (jam processing) can be easily performed. it can.

  Here, the “pressure contact state of the roller pair” means a state in which the rollers of the roller pair are in contact with each other with a pressure capable of conveying while sandwiching the recording medium. “The state in which the pressure contact state of the roller pair is released” means that the rollers in the roller pair are separated from each other, or the pressure between the rollers is lower than that in the pressure contact state while the rollers are in contact with each other. The state that is.

  When the medium accommodating part is disposed at the mounting position, the direction of the urging force applied by the press contact means to the medium accommodating part may be parallel to the separation direction. In this case, the first gear and the second gear can be separated from each other more reliably.

  The recording apparatus according to the present invention further includes a holder that supports the one roller and the pressure contact unit and has a first abutting portion, and the medium accommodating portion includes the medium accommodating portion disposed at the mounting position. A second abutting portion located on the side of the detachment direction with respect to the first abutting portion, and the other of the rollers constituting the roller pair has the medium accommodating portion disposed at the mounting position. And the one contact roller is positioned closer to the mounting direction than the one roller, and the pressing means moves the first contact portion in the detaching direction when the medium accommodating portion is disposed at the mounting position. The first contact portion may be pressed against the second contact portion by urging the roller, and the roller pair may be brought into a pressure contact state by urging the one roller in the mounting direction. In this case, it is possible to more effectively realize a configuration in which the pressing means functions as the urging means.

  The recording apparatus according to the present invention may further include auxiliary biasing means for biasing the holder in the detaching direction when the medium accommodating portion is disposed at the mounting position. In this case, the first gear and the second gear can be separated from each other more reliably. Further, in this case, along with the release of the positioning of the medium accommodating portion, the one roller and the pressure contact means move together with the holder by the biasing force of the auxiliary biasing means, and the pressure contact state of the roller pair can be more reliably released. .

  The holder is rotatable about a rotation axis extending in a direction orthogonal to the detachment direction, and the center of the rotation axis is when the medium accommodating portion is disposed at the mounting position. You may be located in the said removal direction side rather than the gravity center of the holder unit containing the member which the said holder containing the said one roller and the said press contact means supports, and the said holder. In this case, since the center of gravity of the holder unit and the center of the rotation axis of the holder are in the above positional relationship, the holder moves in the removal direction by the action of the weight of the holder unit along with the cancellation of the positioning of the medium accommodating portion. . Therefore, the first gear and the second gear can be separated from each other and the pressure contact of the roller pair can be released more reliably.

  The casing includes a guide rail that extends in parallel with the separation direction and guides the movement of the medium accommodating portion with respect to the mounting portion, and the medium accommodating portion can rotate on the guide rail. May be included. In this case, the static frictional force of the medium accommodating portion can be reduced, and the first gear and the second gear can be more reliably separated by the urging force of the urging means.

  The recording apparatus according to the present invention is provided in the medium accommodating portion, a plate on which the recording medium is placed, and a plate moving mechanism that is provided in the medium accommodating portion and moves the plate in a direction intersecting the plate. , The plate is the driven portion, and the plate moving mechanism may include the second gear.

  The recording apparatus according to the present invention includes a feed roller that is provided in the housing and rotates in a forward direction in which a recording medium is conveyed from the medium accommodating unit toward a recording position facing the recording unit, and the medium accommodating unit. And a separation roller that faces the feed roller when the medium accommodating portion is disposed at the mounting position, and is provided in the medium accommodating portion, and the separation roller is disposed in a reverse direction opposite to the forward direction. A roller rotation mechanism that rotates the separation roller, the separation roller is the driven part, and the roller rotation mechanism includes the second gear.

  In the medium accommodating portion, a portion constituting the positioning means and the second contact portion may be integrally formed. In this case, the positioning accuracy of the medium accommodating portion is improved.

According to the present invention, since the first gear and the second gear are separated from each other by the urging force of the urging means, it is possible to suppress the rotation of the gear in a state where the gears are incompletely engaged with each other. Can be suppressed. Furthermore, since the pressing means functions as the urging means, the configuration can be simplified compared to the case where the urging means and the pressing means are provided separately. In addition, when the medium accommodating portion is located on the side away from the mounting position, the pressure contact state of the roller pair is released, so that the operation of removing the recording medium jammed between the rollers (jam processing) can be easily performed. it can.

1 is a perspective view showing an ink jet printer according to an embodiment of the present invention. It is the schematic which shows the inside of the housing | casing of a printer. It is a perspective view showing a paper storage unit. It is a perspective view which shows the retard roller and board provided in the paper accommodation unit, and the gear which drives these. 4A and 4B are perspective views illustrating a positioning mechanism that positions the paper storage unit at the mounting position, where FIG. 5A illustrates a state where the paper storage unit is positioned at the mounting position, and FIG. 5B illustrates a state where the positioning of the paper storage unit is released. . FIG. 6 is a partial cross-sectional view taken along the line VI-VI shown in FIG. 1 in a state where the paper storage unit is removed from the housing. (A) is the fragmentary sectional view in alignment with the VIIA-VIIA line | wire shown in FIG. 1 in the process in which the paper accommodation unit is mounted in a mounting part. FIG. 7B is a partial cross-sectional view taken along the line VIIB-VIIB shown in FIG. 1 in a state where the sheet storage unit is disposed at the mounting position. (A) is a fragmentary sectional view in alignment with the VIIIA-VIIIA line | wire shown in FIG. 1 in the process in which the paper accommodation unit is mounted in a mounting part. FIG. 5B is a partial cross-sectional view taken along line VIIIB-VIIIB shown in FIG. 1 in a state where the paper storage unit is disposed at the mounting position. It is a disassembled perspective view of a holder unit. FIG. 2 is a block diagram illustrating an electrical configuration of a printer.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  First, an overall configuration of an ink jet printer 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

  The printer 1 has a rectangular parallelepiped casing 1a. A paper discharge unit 1e is provided on the top plate of the housing 1a. A mounting space S1 is formed in the lower part of the housing 1a, and a paper storage unit 1c is mounted in the mounting space S1. The mounting space S1 corresponds to a mounting portion in which the paper storage unit 1c is mounted. The mounting space S1 has an opening formed on the front surface of the housing 1a (the surface on the left front side in FIG. 1 and the surface on the left side in FIG. 2) and a space extending from the opening in the sub-scanning direction. The mounting space S1 is larger than the paper storage unit 1c. The sheet storage unit 1c can be attached to and detached from the mounting space S1 in the sub-scanning direction. A tray unit 1d is attached to the front surface of the housing 1a. The tray unit 1d can be opened and closed with respect to the housing 1a, and can support the paper P in the opened state.

  In the upper space S2 in the housing 1a, the sheet storage unit 1c, the pickup roller 20, the feed roller 21f of the separation roller pair 21, the transport unit 40, the two heads 10, the two platens 50, and the two heads 10 Two corresponding cartridges (not shown) and a control unit 100 for controlling each part of the printer 1 are arranged. The retard roller 21r of the separation roller pair 21 is provided in the paper storage unit 1c.

  Based on a recording command supplied from an external device (such as a PC connected to the printer 1), the control unit 100 prepares for recording so that an image is recorded on the paper P, and supplies, conveys, and feeds the paper P. It controls the discharge operation, the liquid discharge operation synchronized with the conveyance of the paper P, and the like. In addition to a CPU (Central Processing Unit) which is an arithmetic processing unit, the control unit 100 includes a ROM (Read Only Memory), a RAM (Random Access Memory: including a nonvolatile RAM), an ASIC (Application Specific Integrated Circuit), an I / F. (Interface), I / O (Input / Output Port) and the like. The ROM stores programs executed by the CPU, various fixed data, and the like. The RAM temporarily stores data (image data and the like) necessary for executing the program. The ASIC performs rewriting and rearrangement of image data (for example, signal processing and image processing). The I / F performs data transmission / reception with an external device. I / O inputs / outputs detection signals of various sensors.

  The pickup roller 20 can contact the uppermost sheet P among the plurality of sheets P stored in the sheet storage unit 1c. The pickup roller 20 is connected to a paper feed motor 20M (see FIG. 10), and rotates under the control of the control unit 100 to feed out the paper P.

  When a plurality of sheets P are sent from the pickup roller 20, the separation roller pair 21 separates and conveys the uppermost sheet P of the plurality of sheets P from the sheets P other than the uppermost sheet P. Is. That is, the separation roller pair 21 prevents the paper P from being double-fed. The separation roller pair 21 includes a feed roller 21f provided in the housing 1a and a retard roller 21r provided in the paper storage unit 1c. The feed roller 21f always rotates in the clockwise direction in FIG. 2 (positive direction, the direction in which the paper P is conveyed toward the recording position). A torque limiter 21t (see FIG. 4) is attached to the retard roller 21r. When the sheet P is sandwiched between the retard roller 21r and the feed roller 21f, the retard roller 21r rotates in the counterclockwise direction (positive direction) in FIG. When the plurality of sheets P are sandwiched between the retard roller 21r and the feed roller 21f, the retard roller 21r rotates in the clockwise direction in FIG. 2 (reverse direction, the direction in which the sheet P is conveyed toward the sheet storage unit 1c). To do. The feed roller 21f and the retard roller 21r are connected to the feed motor 21fM and the retard motor 21rM (see FIG. 10), respectively, and rotate under the control of the control unit 100.

  The two heads 10 are arranged apart from each other in the sub-scanning direction, and are a precoat head that discharges the pretreatment liquid and an inkjet head that discharges black ink in order from the upstream side in the transport direction of the paper P. The heads 10 have the same structure, are line types that are long in the main scanning direction, and have a substantially rectangular parallelepiped outer shape. The lower surface of the head 10 is a discharge surface 10a in which a large number of discharge ports are opened. Inside the head 10, there is formed a flow path from the pretreatment liquid or black ink supplied from the cartridge (which may be collectively referred to as “liquid”) to the discharge port. The pretreatment liquid is a liquid having a function of preventing ink bleeding and back-through and a function of improving ink color development and quick drying.

  The two platens 50 respectively correspond to the two heads 10 and have support surfaces 50a that support the paper P while facing the ejection surfaces 10a in the vertical direction.

  The transport unit 40 defines a path along which the paper P is transported. The paths are routed from the sheet storage unit 1c through the recording position (position facing the ejection surface 10a) to the paper discharge unit 1e, and from the opened tray unit 1d through the recording position. Path U, a part of R1, R2, R3 to the paper portion 1e. The transport unit 40 includes the following components that define the path.

  The path R1 is a path from the paper storage unit 1c to the recording position, and is defined by the guide 31a, the roller pair 22, the guide 31b, the roller pair 23, the guide 31c, the guide 31d, and the roller pair 24. These components are arranged in this order from the upstream side in the transport direction (the direction indicated by the dotted thick arrow).

  The path R <b> 2 is a path that passes through the recording positions of the two heads 10, and is defined by the guide 32 a, the pressing roller 33, and the roller pair 25. The guide 32 a, the holding roller 33, and the roller pair 25 are disposed between the two heads 10. The restraining roller 33 and the roller pair 25 are arranged in this order from the upstream side in the transport direction.

  The path R3 is a path from the recording position to the paper discharge unit 1e, and is defined by the guides 32b, 33a, 33b, the holding roller 35, and the roller pairs 26, 27, 28. The roller pairs 26 to 28 are arranged in this order from the upstream side in the transport direction. A plurality of restraining rollers 35 are provided along the path R3.

  Each of the roller pairs 22 to 28 includes a driving roller connected to the conveyance motor 40M (see FIG. 10) and a driven roller that rotates as the driving roller rotates. Each of the roller pairs 22 to 28 conveys the paper P by rotating while pinching the paper P in a pressure contact state. Each of the guides 31a to 31d, 32a, 32b, 33a, and 33b is formed of a member that is disposed so as to form a gap that becomes a conveyance path.

  The path from the open tray unit 1d through the recording position to the paper discharge unit 1e includes a path U, a downstream portion in the transport direction of the path R1, and paths R2 and R3. The path U is defined by a roller 29 connected to the transport motor 40M (see FIG. 10).

  Under the control of the control unit 100, the paper P sent out from the paper storage unit 1 c by the pickup roller 20 is conveyed by the rotation of the separation roller pair 21 while being sandwiched between the separation roller pair 21. The paper P conveyed by the separation roller pair 21 is further conveyed along the paths R1 to R3 and is discharged to the paper discharge unit 1e. Alternatively, the sheet P sent out by the roller 29 from the opened tray unit 1d under the control of the control unit 100 is transported along the path U, the downstream portion in the transport direction of the path R1, and the paths R2 and R3. The paper is discharged to the paper discharge unit 1e. When the paper P sequentially passes directly under the head 10 (recording position) while being supported on the support surface 50a, each head 10 is driven by the control of the control unit 100, and is directed from the discharge port of the discharge surface 10a toward the paper P. Thus, an image is formed on the paper P by discharging the liquid.

  Next, the paper storage unit 1c will be described with reference to FIGS. In FIGS. 4 and 5, a part of the sheet storage unit 1c is omitted for explanation. 3 to 5 also show some members provided in the housing 1a for the sake of explanation.

  As shown in FIG. 3, the sheet storage unit 1 c includes a case 70, a plate 75, a shaft support portion 71, and a front panel 72. The sheet storage unit 1c includes a plate moving mechanism 74, a retard roller 21r, a roller rotating mechanism 30, a part of the positioning mechanism 80, a protrusion 71p, and a roller 1cz.

  The case 70 is a box whose upper surface is open and can accommodate a plurality of sheets P. A plate 75 on which the paper P is placed is provided in the case 70. The plate 75 is attached to both side walls along the sub-scanning direction of the case 70 by screws, and can swing with respect to the case 70 with a portion attached by the screw as a fulcrum 75x. That is, the plate 75 has a free end on the downstream side in the disengagement direction in the case 70 (the direction in which the paper storage unit 1c moves relative to the mounting space S1 when the paper storage unit 1c is removed from the mounting space S1). It swings as the free end moves up and down. The shaft support portion 71 is fixed to the surface of the case 70 on the downstream side in the separation direction, and supports the shaft 21gy (see FIG. 4) of the retard roller 21r. The front panel 72 is fixed to the surface of the shaft support portion 71 on the downstream side in the separation direction.

  A plate moving mechanism 74 is provided in the paper storage unit 1c. The plate moving mechanism 74 swings the plate 75. The plate moving mechanism 74 has gears 75g6, 75g7, and 75g8 as shown in FIGS. The gear 75g6 is exposed to the outside on the side surface of the paper storage unit 1c. The plate elevating motor 75M and the gears 75g1, 75g2, 75g3, 75g4, and 75g5 shown in FIG. 3 or 4 are provided in the housing 1a.

  The sheet storage unit 1c is further provided with a retard roller 21r and a roller rotation mechanism 30. The roller rotation mechanism 30 rotates the retard roller 21r. The roller rotation mechanism 30 includes gears 21g2, 21g3, and 21g4. Of these gears, the gear 21g2 is exposed to the outside on the side surface of the paper storage unit 1c. The gear 21g1 shown in FIG. 4 is provided in the housing 1a.

  Next, a transmission mechanism that transmits the drive of the plate lifting / lowering motor 75M provided in the housing 1a to the plate 75 via the plate moving mechanism 74 of the paper storage unit 1c will be described. The drive shaft of the plate elevating motor 75M meshes with the gear 75g1. The gear 75g1 meshes with the gear 75g2. The gear 75g2 meshes with the gear 75g3. The gear 75g3 meshes with the gear 75g4. The gear 75g4 meshes with the gear 75g5. On the other hand, in the plate moving mechanism 74 of the sheet storage unit 1c, the gear 75g6 meshes with the gear 75g7, and the gear 75g7 meshes with the gear 75g8. The gear 75g8 is fixed to the shaft 75a. The shaft 75a extends in the main scanning direction, and a gear 75g8 and an L-shaped plate 75p are fixed to one end and the other end in the main scanning direction, respectively. The L-shaped plate 75p supports the lower surface of the plate 75.

  When the paper storage unit 1c is disposed at the mounting position (a predetermined position in the mounting space S1, see FIG. 2), the gear 75g5 provided in the housing 1a meshes with the gear 75g6 provided in the paper storage unit 1c. When the plate lifting motor 75M rotates in this state, the drive from the plate lifting motor 75M is sequentially transmitted to the gears 75g1 to 75g8, and the shaft 75a rotates. The shaft 75a rotates clockwise in FIG. Along with the rotation of the shaft 75a, the L-shaped plate 75p rotates around the shaft 75a. Due to the rotation of the L-shaped plate 75p, the mounting direction of the L-shaped plate 75p (the direction opposite to the detaching direction) is such that when the paper storage unit 1c is mounted in the mounting space S1, the paper storage unit 1c is relative to the mounting space S1. End in the direction of movement) moves upward. By this movement, the portion of the plate 75 supported by the L-shaped plate 75p moves up and down. As a result, the plate 75 swings around the fulcrum 75x, and the portion of the plate 75 other than the fulcrum 75x moves in the vertical direction.

  The gear 75g4 is a sun gear, and the gear 75g5 is a planetary gear. The gear 75g5 is configured to be movable in the separation direction, and is biased toward the downstream side in the separation direction. Therefore, the meshing failure due to the position error between the gears 75g5 and 75g6 is suppressed. The positional error between the gears 75g5 and 75g6 is caused by a manufacturing error of the housing 1a, a manufacturing error of the paper storage unit 1c, and the like. Since the gear 75g5 is a planetary gear, it is possible to absorb a position error between the gears 75g5 and 75g6 when the paper storage unit 1c is mounted. This position error is assumed to be several millimeters (millimeters).

  Next, control of the plate moving mechanism 74 by the control unit 100 will be described. When the control unit 100 detects that the sheet storage unit 1c is disposed at the mounting position, the control unit 100 controls the driving of the plate lifting motor 75M so that the plate 75 is raised. For example, a sensor for detecting a convex portion provided on the side wall of the case 70 is provided. The control unit 100 detects that the sheet storage unit 1c is disposed at the mounting position by detecting the convex portion provided on the side wall of the case 70 by this sensor. When the plate 75 is raised, the paper P placed on the plate 75 comes into contact with the pickup roller 20. When the plate 75 is further raised, the pickup roller 20 is raised. The controller 100 controls the drive of the plate lifting / lowering motor 75M so that the lift of the plate 75 stops when the pickup roller 20 reaches a predetermined position due to the lift of the pickup roller 20. The control unit 100 waits for a recording command in this state. Therefore, after the control unit 100 receives the recording command, the operation of raising the plate 75 is unnecessary, and the paper P placed on the plate 75 can be sent out to the transport unit 40 quickly.

  When the recording operation is performed in a state where the pickup roller 20 is in a predetermined position due to the rise of the plate 75, the number of sheets P placed on the plate 75 gradually decreases. As the number of sheets P placed on the plate 75 decreases, the pickup roller 20 moves downward from a predetermined position. The control unit 100 controls the driving of the plate lifting / lowering motor 75M so that the plate 75 is raised in the same manner as described above even when the pickup roller 20 moves below the predetermined position.

  Next, a transmission mechanism that transmits the drive of the retard motor 21rM (see FIG. 10) provided in the housing 1a to the retard roller 21r via the roller rotation mechanism 30 of the paper storage unit 1c will be described. The drive shaft of the retard motor 21rM meshes with the gear 21g1. On the other hand, in the roller rotation mechanism 30 of the paper storage unit 1c, the gears 21g2 and 21g3 are fixed to the shaft 21gx. The gear 21g3 meshes with the gear 21g4. The gear 21g4 and the torque limiter 21t are fixed to the shaft 21gy. The torque limiter 21t is fixed to the retard roller 21r.

  When the paper storage unit 1c is disposed at the mounting position, the gear 21g1 provided on the housing 1a meshes with the gear 21g2 provided on the paper storage unit 1c. When the retard motor 21rM rotates in this state, the drive from the retard motor 21rM is sequentially transmitted to the gears 21g1 to 21g4, and the torque limiter 21t and the retard roller 21r rotate. The retard roller 21r rotates in the direction in which the paper P is conveyed toward the paper storage unit 1c.

  The shaft support portion 71 (see FIG. 3) rotatably supports the shafts 75a, 21gx, and 21gy. The shaft support portion 71 further supports the shaft 71x (see FIG. 5) in a rotatable manner.

  Next, the positioning mechanism 80 will be described. The positioning mechanism 80 positions the paper storage unit 1c at the mounting position. The positioning mechanism 80 includes a hook 71f provided in the paper storage unit 1c and a hole 1ax provided in the housing 1a.

  The hooks 71f are fixed to both ends of the shaft 71x supported by the shaft support portion 71. As shown in FIG. 5, the shaft 71x extends in the main scanning direction. A pair of arms 73a is fixed to the shaft 71x at a position closer to the center in the main scanning direction than the hooks 71f. One end of the arm 73a is fixed to the shaft 71x, and the other end of the arm 73a supports the handle 73. A spring 73s that urges the arm 73a in the A direction is attached to one end of the arm 73a.

  The handle 73 is a substantially rectangular parallelepiped member, and is exposed to the outside through an opening 72x formed in the front panel 72 (see FIG. 1). The user can attach and detach the paper storage unit 1 c while holding the handle 73. The handle 73 is movable with respect to the front panel 72 in the mounting direction and the detaching direction. When the user grips the handle 73 and moves the handle 73 in the disengagement direction against the urging force of the spring 73s, the arm 73a, the shaft 71x, and the hook 71f are all in the B direction as shown in FIG. Rotate in the direction opposite to the A direction.

  A hole 1ax is defined in the housing 1a. The holes 1ax are respectively provided in two side walls that extend in the sub-scanning direction among the walls that define the mounting space S1. The hole 1ax is disposed at a position where the tip 71fa of the hook 71f is accommodated when the paper accommodation unit 1c is attached to the attachment space C. The hole 1ax includes a convex portion 1ay that defines the hole 1ax, and a space 1ax1 that is located downstream of the convex portion 1ay in the hole 1ax in the mounting direction.

  Next, an operation in which the positioning mechanism 80 positions the paper storage unit 1c at the mounting position in the mounting space S1 will be described. When the paper storage unit 1c is mounted in the mounting space S1, the hook 71f moves in the mounting direction. When the paper storage unit 1c further moves in the mounting direction, the tip 71fa of the hook 71f enters the hole 1ax. When the tip 71fa of the hook 71f further moves in the mounting direction, the tip 71fa of the hook 71f moves so as to run up on the inclined surface on the downstream side in the separation direction of the convex portion 1ay. When the tip 71fa of the hook 71f runs up the inclined surface, the shaft 71x rotates in the B direction. When the tip 71fa of the hook 71f gets over the top of the inclined surface, as shown in FIG. 5A, the tip 71fa of the hook 71f is accommodated in the space 1ax1 on the downstream side in the mounting direction with respect to the projection 1ay in the hole 1ax. Is done. At this time, unless the user moves the handle 73 in the disengagement direction, the arm 73a, the shaft 71x, and the hook 71f are all urged in the A direction by the spring 73s, and the tip 71fa is disposed below the convex portion 1ay in the space 1ax1. Is done. Thereby, the paper storage unit 1c is positioned at the mounting position. In other words, the tip 71fa of the hook 71f is positioned in the space 1ax1 on the downstream side in the mounting direction with respect to the convex portion 1ay in the hole 1ax, so that the paper storage unit 1c is positioned at the mounting position.

  When the paper storage unit 1c is taken out from the housing 1a, as shown in FIG. 5B, when the user moves the handle 73 in the detaching direction, the arm 73a, the shaft 71x, and the hook 71f are all in the B direction. The tip 71fa is disposed above the convex portion 1ay in the space 1ax1. Thereby, the positioning of the paper storage unit 1c by the hook 71f is released, and the paper storage unit 1c can be taken out from the housing 1a.

  Next, the protrusion 71p provided on the paper storage unit will be described. As shown in FIG. 3, the protrusion 71p is provided on the upper surface of the shaft support portion 71 and protrudes upward from the upper surface. The protrusion 71p can come into contact with a protrusion 22hp described later.

  Next, the roller pair 22 will be described with reference to FIGS. The roller pair 22 conveys the paper P conveyed from the separation roller pair 21 toward the recording position.

  As shown in FIG. 6, the roller pair 22 includes rollers 22a and 22b. The roller 22b is rotatably supported by the housing 1a. On the other hand, the roller 22a is rotatably supported by the holder 22h. The holder 22h is supported by the housing 1a and is rotatable about a shaft 22hx extending in the main scanning direction. Further, the holder 22h has a pressure contact position (position shown in FIGS. 7B and 8B) and a pressure release position (position shown in FIGS. 6, 7A, and 8A). Can take. The press contact position and the press release position will be described in detail later.

  As shown in FIG. 9, the holder 22h has a shaft hole 22hxa, a pair of partition plates 22ha and 22hb, a stopper 22hc, and a convex portion 22hp. A shaft 22hx (see FIG. 6) provided in the housing 1a is inserted into the shaft hole 22hxa. Thereby, the holder 22h rotates around the shaft 22hx. Each of the partition plates 22ha and 22hb has a pair of partition plates 22ha and a pair of partition plates 22hb. The pair of partition plates 22hb are disposed on both outer sides of the pair of partition plates 22ha in the main scanning direction. Slits 22hax and 22hbx are formed in the respective partition plates 22ha and 22hb. The slits 22hax and 22hbx extend in a direction parallel to the detachment direction when the holder 22h is in the pressure contact position (position shown in FIGS. 7B and 8B). The stoppers 22hc are respectively disposed on both outer sides of the partition plate 22hb in the main scanning direction. The roller 22a is accommodated in a space sandwiched between a pair of partition plates 22ha. A shaft 22ax serving as a rotation center of the roller 22a is inserted into slits 22hax and 22hbx formed in the partition plates 22ha and 22hb. Then, both ends of the shaft 22ax in the main scanning direction are respectively inserted into the blind holes 22hcx of the stopper 22hc. The shaft 22ax extends in the main scanning direction from both ends of the roller 22a in the main scanning direction.

  The holder 22h further supports a pair of springs 22as. The springs 22as are housed in spaces sandwiched between the partition plates 22ha and 22hb, respectively. One end of the spring 22as is in contact with the shaft 22ax, and the other end is in contact with the rear wall 22hd of the holder 22h (see FIGS. 8A and 8B). The rear wall 22hd is a wall on the opposite side to the side supporting the shaft 22ax in the holder 22h, and is a downstream wall in the detaching direction. Since the tip of the shaft 22ax is inserted into the blind hole 22hcx, the roller 22a is prevented from being detached from the holder 22h by the biasing force of the spring 22as. In other words, the spring 22as biases the shaft 22ax and the rear wall 22h away from each other. The spring 22as is a compression spring, and is provided so that the length of the spring 22as is shorter than the free length of the spring 22as when the shaft 22ax is attached to the holder 22h.

  The convex portion 22hp is provided at the lower portion of the holder 22h in the vertical direction. Further, as shown in FIGS. 7A and 7B, the convex portion 22hp protrudes toward the downstream side in the separation direction from the downstream surface of the holder 22h in the separation direction. The convex portion 22hp comes into contact with a protrusion 71p provided on the paper storage unit 1c. The contact between the protrusion 22hp and the protrusion 71p will be described in detail later.

  Further, the holder 22h is provided with a spring 22hs as shown in FIG. One end of the spring 22hs is fixed to the rear surface of the holder 22h (the surface opposite to the surface facing the roller 22a), and the other end is fixed to the housing 1a. The spring 22hs biases the holder 22h in the X direction. Yes. The spring 22hs is a tension spring and is provided such that the length of the spring 22hs is longer than the free length of the spring 22hs when the holder 22h is in the pressure contact position.

  Next, a process of attaching and detaching the sheet storage unit 1c to the mounting space S1 will be described.

  When the paper storage unit 1c is taken out from the housing 1a, the holder 22h takes the pressure release position as shown in FIG. When the holder 22h is in the pressure release position, the holder 22h is in a position rotated in the X direction by the urging force of the spring 22hs than when the paper storage unit 1c is disposed at the mounting position. At this time, the rollers 22a and 22b are separated from each other, and the pressure contact state of the roller pair 22 is released.

  Here, the “pressure contact state of the roller pair 22” refers to a state in which the rollers 22a and 22b of the roller pair 22 are in contact with each other with a pressure that allows the paper P to be conveyed while being sandwiched. In other words, the pressure contact state of the roller pair 23 refers to a state in which the rollers 23a and 23b are pressed against each other with a predetermined pressure in order to convey the paper P by the roller pair 23. “The state in which the pressure contact state of the roller pair 22 is released” means that the rollers 22a and 22b of the roller pair 22 are separated from each other, or the rollers 22a and 22b are in contact with each other and are in a pressure contact state. A state in which the pressure between the rollers 22a and 22b is reduced. In other words, the state where the pressure contact state of the roller pair 23 is released refers to a state where the rollers 23a and 23b are separated from each other, or a state where the pressure between the rollers 23a and 23b is reduced below a predetermined pressure. The user can perform jam processing (operation for clearing jamming of the paper P in the transport path) in a state where the pressure contact state of the roller pair 22 is released.

  In the process of mounting the paper storage unit 1c in the mounting space S1, the user inserts the paper storage unit 1c into the mounting space S1 from the case 70 side. Then, first, the projection 71p of the sheet storage unit 1c comes into contact with the convex portion 22hp of the holder 22h. Thereafter, when the user further moves the paper storage unit 1c in the mounting direction, the protrusion 71p presses the convex portion 22hp against the urging force of the spring 22hs while moving in the mounting direction. At this time, the spring 22hs extends, the holder 22h rotates about the shaft 22hx in the Y direction (the direction opposite to the X direction), and the roller 22a moves in a direction approaching the roller 22b.

  As shown in FIGS. 7A and 8A, the roller 22a comes into contact with the roller 22b at a time slightly before the time when the paper storage unit 1c is disposed at the mounting position. At this time, the sheet storage unit 1c is on the side of the detachment with respect to the mounting position, and the pressure between the rollers 22a and 22b is reduced as compared with the pressure contact state while the rollers 22a and 22b are in contact with each other. That is, the pressure contact state of the roller pair 22 is released. At this time, the gears 75g5, 75g6 and the gears 21g1, 21g2 are separated from each other.

  When the user further moves the paper storage unit 1c in the mounting direction after the rollers 22a and 22b come into contact with each other, the projection 71p moves in the mounting direction and presses the convex portion 22hp against the urging force of the springs 22hs and 22as. To do. The holder 22h further rotates in the Y direction (the direction opposite to the X direction) about the shaft 22hx. At this time, the spring 22hs is further extended, the spring 22as is contracted, and the pressure between the rollers 22a and 22b is increased. Then, as shown in FIGS. 7B and 8B, when the sheet storage unit 1c is arranged at the mounting position, the holder 22h takes the pressure contact position. When the holder 22h takes the pressure contact position, the roller pair 22 is brought into a pressure contact state by the urging force of the spring 22as. When the paper storage unit 1c is disposed at the mounting position, the gear 75g5 meshes with the gear 75g6 and the gear 21g1 meshes with the gear 21g2 (see FIG. 4). Further, at this time, the paper storage unit 1c is positioned at the mounting position by the cooperation of the hook 71f and the hole 1ax (see FIG. 5A). When the holder 22h takes the pressure contact position, the extending direction of the slits 22hax and 22hbx is the mounting direction. That is, the direction in which the shaft 22ax of the roller 22a can move is the mounting direction. Here, the roller 22a and the roller 22b are aligned in the mounting direction. For this reason, the direction in which the roller 22a is urged toward the roller 22b is the same as a straight line connecting the rotation center of the roller 22a and the rotation center of the roller 22b. Thereby, since the pressure contact state of the roller pair 22 is stabilized, high conveyance accuracy can be maintained. If the direction in which the roller 22a is urged toward the roller 22b and the straight line connecting the rotation center of the roller 22a and the rotation center of the roller 22b intersect, the pressure contact state of the roller pair 22 becomes unstable. The conveyance accuracy can be deteriorated.

  When the paper storage unit 1c is disposed at the mounting position, the protrusion 71p is positioned on the side of the detachment with respect to the convex portion 22hp, and the roller 22b is positioned on the side of the mounting direction with respect to the roller 22a (FIG. 7 ( b)). The sheet storage unit 1c is positioned at the mounting position by the cooperation of the hook 71f and the hole 1ax. For this reason, the protrusion 71p provided on the paper storage unit 1c does not move in the separation direction. At this time, the protrusion 71p presses the holder 22h against the urging force of the springs 22as and 22hs. In other words, the springs 22as and 22hs both urge the protrusion 71p in the detaching direction. That is, the protrusion 22hp is in pressure contact with the protrusion 71p. Further, the spring 22hs biases the holder 22h in the detaching direction. Further, the spring 22as applies an urging force in the mounting direction to the roller 22a, whereby the roller pair 22 is in a pressure contact state.

  Further, when the sheet storage unit 1c is disposed at the mounting position, the center of the shaft 22hx is located on the side of the detachment direction with respect to the center of gravity of the holder unit constituted by the roller 22a, the spring 22as, and the holder 22h. . In the present embodiment, the center of gravity of the holder unit is substantially at the same position as the center of the shaft 22ax, for example. The holder unit may include another member supported by the holder 22h.

  In the process of taking out the paper storage unit 1c from the housing 1a, first, the user moves the handle 73 in the detaching direction so that the positioning of the paper storage unit 1c by the hook 71f is released (see FIG. 5B). . At substantially the same time as the cancellation of the positioning, the paper storage unit 1c moves in the direction of separation by the urging force of the springs 22as and 22hs acting on the protrusion 71p. At this time, the holder 22h rotates about the shaft 22hx in the X direction, the pressure contact state of the roller pair 22 is released (see FIG. 7A), and the gears 75g5, 75g6 and the gears 21g1, 21g2 are separated from each other. .

  In the present embodiment, the paper accommodating unit 1c can be moved to a position where the gears 75g5, 75g6 and the gears 21g1, 21g2 are separated from each other by the biasing force of the spring 22as of the springs 22as, 22hs. The spring 22hs functions in an auxiliary manner.

In the present embodiment, the following (Expression 1) and (Expression 2) are satisfied.
(Formula 1) μ _s m <kx
(Equation _{2) μ k ml ≦ 1/} 2 * kl 2
(Where μ _s is the static friction coefficient of the paper storage unit 1c, μ _k is the dynamic friction coefficient of the paper storage unit 1c, m is the mass of the paper storage unit 1c, k is the spring constant of the spring 22as, and x is the initial deflection of the spring 22as. , L is the distance from the position where the gears 75g5, 75g6 and the gears 21g1, 21g2 mesh with each other to the position separated from each other)

  Thereafter, when the user moves the paper storage unit 1c in the direction of separation, the rollers 22a and 22b are separated from each other. The holder 22h further rotates in the X direction about the shaft 22hx by the action of the spring 22hs, and the projection 71p is separated from the convex portion 22hp.

  As shown in FIGS. 7A and 7B and FIGS. 8A and 8B, the bottom wall defining the mounting space S1 in the housing 1a extends in parallel with the separation direction and accommodates paper. A guide rail 1az for guiding the movement of the unit 1c with respect to the mounting space S1 is provided. The guide rail 1az is made of a thin plate-like member extending in the detaching direction. A plurality of rollers 1 cz that can rotate on the guide rail 1 az are provided at the bottom of the case 70. The sheet storage unit 1c is attached to and detached from the mounting space S1 while the roller 1cz rotates on the guide rail 1az.

  As described above, according to the printer 1 of the present embodiment, when the positioning of the sheet storage unit 1c by the hook 71f and the hole 1ax is released, the gears 75g5, 75g6 and the gears 21g1, 21g1, are biased by the spring 22as. 21g2 are separated from each other. Therefore, the gears 75g1 to 75g8 and 21g1 to 21g4 are prevented from rotating in an incomplete meshing state between the gears 75g5 and 75g6 or between the gears 21g1 and 21g2, and the gears 75g1 to 75g8 and 21g1 to 21g4 are damaged or abnormal. Can be suppressed.

  Here, the distance from the position at which the gears 75g5, 75g6 and the gears 21g1, 21g2 are engaged with each other to the position at which they are separated from each other depends on the total tooth depth of the gears 75g5, 75g6 and the gears 21g1, 21g2. Total toothpaste is the sum of toothpaste and toothpaste. The end of the addendum is the difference between the tip circle radius and the pitch circle radius. The root of the tooth root is the difference between the pitch circle radius and the root circle radius. In this embodiment, the total tooth depth of the gears 75g5, 75g6 and the gears 21g1, 21g2 is about 5 mm, and the distance is also about 5 mm. Further, in the present embodiment, the distance by which the sheet storage unit 1c is moved in the separation direction by the urging force of the springs 22as and 22hs acting on the protrusion 71p is set to about 10 mm. This distance is not limited to 10 mm, and may be larger than the distance from the position at which the gears 75g5, 75g6 and the gears 21g1, 21g2 are separated from each other.

  In the present embodiment, a sensor is provided for detecting that the paper storage unit 1c is disposed at the mounting position. In such a sensor, a predetermined detection area (in the present embodiment, about 3 to 5 mm) is usually set in consideration of manufacturing errors of the housing 1a and the paper storage unit 1c. For this reason, the sensor is mounted not only when the paper storage unit 1c is disposed at the mounting position but also when the paper storage unit 1c is disposed slightly away from the mounting position. If the amount of deviation is less than or equal to the detection area, it is detected that the paper storage unit 1c is disposed at the mounting position. When such a sensor is used, the following problems may occur. That is, when the user mounts the paper storage unit 1c in the mounting space C, the paper storage unit 1c is not disposed properly at the mounting position, and the paper storage unit is disposed slightly away from the mounting position. Can be considered. When the amount of deviation from the mounting position of the paper storage unit 1c is equal to or smaller than the detection region, the sensor detects that the paper storage unit 1c is disposed at the mounting position. At this time, the meshing of the gears 75g5, 75g6 and the gears 21g1, 21g2 is in an incomplete state. In this state, under the control of the control unit 100, the plate lifting motor 75M is driven to rotate the gear 75g5, and when the retard motor 21rM is driven to rotate the gear 21g1, the gears 75g5, 75g6 and the gears 21g1, 21g2 are rotated. Damage or abnormal noise will occur. However, in the present embodiment, as described above, when the positioning of the paper storage unit 1c by the hook 71f and the hole 1ax is released, the gears 75g5, 75g6 and the gears 21g1, 21g2 are respectively urged by the bias of the spring 22as. Such a problem can be suppressed because of the separation. If the detection area is to be reduced, the manufacturing cost of the sensor, the paper storage unit 1c, the housing 1a, etc. will increase. If the detection area is enlarged in order to suppress an increase in manufacturing cost, the above problem may become prominent. However, in this embodiment, the above problems can be suppressed while suppressing an increase in manufacturing cost.

  In addition, in the present embodiment, the gears 75g5, 75g6 and the gears 21g1, 21g2 are separated from each other by using a spring 22as that presses the roller pair 22 in a pressure contact state. In this case, as compared with the case where the biasing means for moving the paper storage unit 1c as described above when the positioning of the paper storage unit 1c is released and the pressure contact means for bringing the roller pair 22 into the pressure contact state are provided individually. The configuration can be simplified. In addition, when the paper storage unit 1c is located on the side away from the mounting position, the pressure contact state of the roller pair 22 is released, so that the operation of removing the paper P jammed between the rollers 22a and 22b (jam processing) is performed. It can be done easily.

  When the paper storage unit 1c is disposed at the mounting position, the direction of the urging force applied by the spring 22as to the paper storage unit 1c is parallel to the separation direction (see FIG. 8B). In this case, the gears 75g5, 75g6 and the gears 21g1, 21g2 can be separated from each other more reliably. In addition, since the holder 22h rotates around the shaft 22hx, the movement locus of the convex portion 22hp has an arc shape. For this reason, when the paper storage unit 1c is disposed at the mounting position, the direction of the force with which the convex portion 22hp presses the protrusion 71p includes the direction component of the separation direction and the upward direction in the vertical direction. In the present embodiment, in the direction of the force with which the convex portion 22hp presses the protrusion 71p, the direction component in the separation direction is larger than the direction component in the vertical direction upward, so the convex portion 22hp efficiently separates the paper storage unit 1c. Can be moved in the direction. As a modification, when the paper storage unit 1c is arranged at the mounting position, the shaft hole 22hxa of the holder 22h and the convex portion 22hp may be arranged along the vertical direction. In this case, the direction component in the separation direction in the direction of the force with which the convex portion 22hp presses the protrusion 71p is maximized when the paper storage unit 1c is disposed at the mounting position, and thus the paper can be stored more efficiently. The unit 1c can be moved in the direction of separation.

  The spring 22as biases the convex portion 22hp to the protrusion 71p and biases the roller 22a to the mounting direction by biasing the convex portion 22hp in the detaching direction when the paper storage unit 1c is disposed at the mounting position. By doing so, the roller pair 22 is brought into a pressure contact state. In this case, a configuration in which the spring 22as that presses the roller pair 22 in a pressed state functions as an urging unit that moves the paper storage unit 1c as described above when the positioning of the paper storage unit 1c is released is more effective. Can be realized.

  The printer 1 further includes a spring 22hs that urges the holder 22h in the detaching direction when the paper storage unit 1c is disposed at the mounting position. In this case, the gears 75g5, 75g6 and the gears 21g1, 21g2 can be separated from each other more reliably. Further, in this case, the roller 22a and the spring 22as move together with the holder 22h by the biasing force of the spring 22hs along with the release of the positioning of the paper storage unit 1c, and the pressure contact state of the roller pair 22 can be released more reliably. .

  When the paper storage unit 1c is disposed at the mounting position, the center of the shaft 22hx is located on the side of the detachment direction with respect to the center of gravity of the holder unit. In this case, since the center of gravity of the holder unit and the center of the shaft 22hx are in the above-described positional relationship, the holder 22h moves in the disengagement direction by the action of the holder unit's own weight along with the release of the positioning of the sheet storage unit 1c. Therefore, the gears 75g5, 75g6 and the gears 21g1, 21g2 can be separated from each other and the pressure contact release of the roller pair 22 can be more reliably realized. When the paper storage unit 1c is disposed at the mounting position, if the center of the shaft 22hx is located on the side away from the center of gravity of the holder unit, the paper storage unit can be provided without providing the spring 22hs. In the state where 1c is taken out from the housing 1a, the pressure contact state of the roller pair 22 can be released.

  The housing 1a has a guide rail 1az, and the paper storage unit 1c has a roller 1cz. In this case, the static frictional force of the paper storage unit 1c can be reduced, and the gears 75g5, 75g6 and the gears 21g1, 21g2 can be more reliably separated from each other by the biasing of the spring 22as.

  In the paper storage unit 1c, an element (a hole through which the shaft 71x shown in FIG. 5 is inserted) that constitutes the positioning mechanism 80 that positions the paper storage unit 1c at the mounting position, and the protrusion 71p The support portion 71 is integrally formed. In this case, the positioning accuracy of the paper storage unit 1c is improved.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various design changes can be made as long as they are described in the claims.

The recording apparatus according to the present invention is not limited to a printer, and can be applied to a facsimile, a copier, and the like. Further, the recording apparatus is not limited to the ink jet type, and may be a laser type or the like.
The number of recording units included in the recording apparatus may be an arbitrary number of 1 or more.
The recording unit may eject any liquid other than the pretreatment liquid and ink, and may be a photoreceptor in the case of a laser type as described above.
The recording medium is not limited to the paper P, and may be any recordable medium.
The medium storage unit may be moved with respect to the mounting unit by controlling a mechanical mechanism instead of being manually operated by the user.
The positioning means is not limited to the combination of the hook 71f and the hole 1ax as in the above-described embodiment. For example, the positioning means may be a combination of a concave portion provided in the medium accommodating portion and a convex portion provided in the housing. May be. In this case, the concave portion provided in the medium accommodating portion and the second contact portion may be integrally formed.
-The kind of 1st gear and 2nd gear is not limited to the thing of the above-mentioned embodiment, It is arbitrary. The number of combinations of the first gear and the second gear is two in the above-described embodiment, but may be one or three or more.
The guide rail is not limited to the bottom wall that defines the mounting space S1, and may be provided on the side wall that defines the mounting space S1. The guide rail and the rotating member may be omitted.
-The position of the rotation axis of the holder is not particularly limited. However, it is preferable that the rotating shaft of the holder and the first contact portion are aligned in the vertical direction.
The holder may not be rotatable but may be movable in a direction parallel to the mounting direction. In this case, since the moving direction of the holder and the moving direction of the paper storage unit 1c are the same, the paper storage unit 1c can be moved more efficiently.
-The auxiliary biasing means may be omitted.
The roller pair may be on either the upstream side or the downstream side of the recording position with respect to the transport direction.
In the reference example of the present invention, the pressing means is not limited to functioning as the urging means, and the urging means may be provided separately from the pressing means.

1 Inkjet printer (recording device)
DESCRIPTION OF SYMBOLS 1a Case 1az Guide rail 1c Paper storage unit (medium storage part)
1cz roller (rotating member)
10 head (recording part)
21f feed roller 21r retard roller (driven part, separation roller)
21g1 gear (first gear)
21g2 gear (second gear)
21rM retard motor (drive source)
22 roller pair 22a roller (one roller)
22as spring (biasing means, pressure contact means)
22b Roller (the other roller)
22h Holder 22hs Spring (auxiliary biasing means)
22hp convex part (first contact part)
22hx axis (rotating axis)
30 Roller rotating mechanism 71f Hook (positioning means)
71p Protrusion (second contact part)
74 Plate moving mechanism 75 Plate (Driven part)
75g5 gear (first gear)
75g6 gear (second gear)
75M plate lift motor (drive source)
80 Positioning mechanism (positioning means)
P paper (recording medium)
S1 wearing space (wearing part)

Claims (9)

A recording unit for recording on a recording medium;
A medium accommodating portion for accommodating a recording medium;
A housing that houses the recording unit and has a mounting unit to which the medium storage unit is mounted;
Positioning means for positioning the medium accommodating portion at a mounting position which is a predetermined position of the mounting portion;
A first gear provided in the housing and to which driving from a driving source is transmitted;
A second gear that is provided in the medium accommodating portion and meshes with the first gear of the medium accommodating portion disposed at the mounting position, and transmits the drive from the drive source to the driven portion;
A pair of rollers for conveying the recording medium so that the recording medium passes through a recording position facing the recording unit;
The mounting direction of the medium container is mounted to the mounting portion functions as urging means for urging the front Symbol medium housing portion in the separating direction in the opposite direction, the medium containing portion is disposed in the mounting position Pressure contact means for bringing the roller pair into a pressure contact state by applying an urging force to at least one of the rollers constituting the roller pair ,
The pressure contact means moves the medium accommodating portion to a position where the first gear and the second gear are separated from each other when the positioning of the medium accommodating portion by the positioning means is released ;
When said medium accommodating portion is in the removing direction side than the mounting position, and wherein the Rukoto pressure contact state of the roller pair is released, the recording device. When the medium containing portion is disposed on the mounting position, the direction of the biasing force which the urging means is applied to said medium accommodating portion, characterized in that it is parallel to the withdrawal direction, according to claim 1 Recording device. A holder for supporting the one roller and the pressure contact means and having a first contact portion;
The medium accommodating portion has a second abutting portion that is located on the detaching direction side with respect to the first abutting portion when the medium accommodating portion is disposed at the mounting position.
The other roller of the rollers constituting the roller pair is positioned closer to the mounting direction than the one roller when the medium accommodating portion is disposed at the mounting position.
The pressure contact means biases the first contact portion in the disengagement direction when the medium accommodating portion is disposed at the mounting position, thereby causing the first contact portion to be the second contact portion. together is pressed against the recording apparatus according to claim 1 or 2, characterized in that a pressed state the roller pair by energizing said one roller in the mounting direction. The recording apparatus according to claim 3 , further comprising auxiliary urging means for urging the holder in the detaching direction when the medium accommodating portion is disposed at the mounting position. The holder is pivotable about a pivot axis extending in a direction perpendicular to the detachment direction;
The center of the rotation shaft is based on the center of gravity of the holder unit including the holder and the member supported by the holder including the one roller and the pressure contact means when the medium accommodating portion is disposed at the mounting position. also, and being located in said disengaging direction, a recording apparatus according to claim 3 or 4. The housing includes a guide rail that extends in parallel with the detachment direction and guides the movement of the medium housing portion relative to the mounting portion;
The medium receiving portion, and having a rotary member rotatable on said guide rails, a recording apparatus according to any one of claims 1-5. A plate provided in the medium accommodating portion, on which a recording medium is placed;
A plate moving mechanism that is provided in the medium accommodating portion and moves the plate in a direction crossing the plate;
The plate is the driven part;
It said plate moving mechanism, characterized in that it comprises a second gear, the recording apparatus according to any one of claims 1-6. A feed roller that is provided in the housing and rotates in a forward direction in which a recording medium is conveyed from the medium accommodating unit toward a recording position facing the recording unit;
A separation roller that is provided in the medium accommodating portion and faces the feed roller when the medium accommodating portion is disposed at the mounting position;
A roller rotation mechanism that is provided in the medium accommodating portion and rotates the separation roller in a direction opposite to the normal direction;
The separation roller is the driven portion;
It said roller rotating mechanism, characterized in that it comprises a second gear, the recording apparatus according to any one of claims 1-7. In the medium containing portion, and a portion constituting the positioning means, and the second contact portion, characterized in that it is integrally molded, according to any one of claims 3-5 Recording device.