Media mounting device and recording device

Abstract

To provide a medium loading device suppressed in enlargement of the medium loading device in the sheet loading direction, and a recording device.SOLUTION: A medium loading device (feeding tray 100) has a loading part 300, a regulating part (edge guide 400), a displacement part 500, a detection part 600, and an adjustment part 800. The regulating part (edge guide 400) has a first regulation member (first edge guide 410) and a second regulation member (second edge guide 450). The displacement part 500 can move the first regulation member (first edge guide 410) and the second regulation member (second edge guide 450) in the opposite direction with each other in the first direction. The detection part 600 is provided between the loading part 300 and the adjustment part 800.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present invention relates to a medium placement device and a recording device including the medium placement device.

Background Art

[0002] Conventionally, in a paper feeding device (corresponding to a medium placement device) provided in a recording device, Patent Document 1 discloses a configuration in which a holding means that integrally holds a pinion and a rack for moving a pair of regulating means in opposite directions is movable in a direction perpendicular to the paper feeding direction of the paper.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, in the paper feeding device, when trying to detect the paper width from the position of the regulating means, it is necessary to move the paper width detection mechanism integrally with the regulating means. However, Patent Document 1 does not describe the arrangement of the paper width detection mechanism and the position adjustment mechanism of the regulating means. In addition, in the arrangement of the paper width detection mechanism and the position adjustment mechanism of the regulating means, when simply overlapping the paper width detection mechanism and the position adjustment mechanism, there is generally a problem that the paper feeding device becomes larger in the direction in which the paper is stacked.

Means for Solving the Problems

[0005] The media placement device includes a placement unit for placing a media, a regulation unit for restricting the movement of the media placed on the placement unit in a first direction, a displacement unit for holding the regulation unit movably in the first direction, a detection unit for detecting the position of the regulation unit in the first direction, and an adjustment unit for adjusting the positions of the regulation unit, the displacement unit, and the detection unit in the first direction. The regulation unit includes a first regulation member for regulating a first end of the media in the first direction, and a second regulation member for regulating a second end of the media opposite to the first end in the first direction. The displacement unit is capable of moving the first regulation member and the second regulation member in opposite directions to each other in the first direction, and the detection unit is provided between the placement unit and the adjustment unit.

[0006] The recording device includes the above-described media placement device and a recording unit for performing recording on the media placed on the media placement device.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Embodiments for Carrying Out the Invention

[0008] 1. Embodiment FIG. 1 is an internal configuration diagram of the recording apparatus 10 of the present embodiment. The configuration of the recording apparatus 10 will be described with reference to FIG. 1. As shown in FIG. 1, the recording apparatus 10 of the present embodiment is a printer that forms an image by discharging ink Q as a liquid onto a sheet P as a medium. Note that the X - Y - Z coordinate system shown in each figure is a rectangular coordinate system.

[0009] The direction along the X - axis indicates the width direction of the recording apparatus 10, the direction along the Y - axis indicates the depth direction of the recording apparatus 10, and the direction along the Z - axis indicates the height direction of the recording apparatus 10. Also, the direction along the X - axis is also the width direction of the sheet P.

[0010] The direction along the A - axis shown in FIG. 1 is, when viewed in the +X direction, a direction intersecting the direction along the Y - axis, and is an oblique direction in which the position in the -Y direction is lower in the -Z direction with respect to the position in the +Y direction. The +A direction is the direction in which the line head 40 described later approaches the conveyance belt 31. The -A direction is the direction in which the line head 40 retreats from the conveyance belt 31. The direction along the B - axis shown in FIG. 1 is, when viewed in the +X direction, a direction orthogonal to the direction along the A - axis. The +B direction is the conveyance direction of the sheet P in the recording area between the line head 40 and the conveyance belt 31.

[0011] In the recording apparatus 10, the sheet P is conveyed through a conveyance path T represented by a broken line. Note that since the conveyance direction of the sheet P is the direction along the conveyance path T, it is different in each part of the conveyance path T. The direction in which the sheet P is conveyed is sometimes referred to as "downstream", and the opposite direction is sometimes referred to as "upstream". In the recording apparatus 10, as examples of the sheet P, sheets PA and PB having different lengths in the conveyance direction can be used. The length of the sheet PA in the conveyance direction is shorter than the length of the sheet PB in the conveyance direction.

[0012] The recording device 10 includes a main body unit 12 as the device main body and an additional unit 13 disposed below the main body unit 12. Specifically, the recording device 10 includes a paper cassette 16, a line head 40 as a recording unit, and a conveyance unit 39. The conveyance unit 39 conveys the paper P and includes a forward conveyance unit 49, a reverse conveyance unit 50, and a feeding unit 60. Further, the recording device 10 includes an ink supply unit 30, a cap unit 32, a wiper unit 34, a waste liquid tank 38, and a control unit (not shown).

[0013] The main body unit 12 includes a housing serving as an exterior. A discharge tray 17 is provided at a portion in the +Z direction from the center in the direction along the Z axis of the main body unit 12. The paper cassette 16 is provided in the main body unit 12 and the additional unit 13. The additional unit 13 includes a housing serving as an outer shell. The additional unit 13 is detachable from the main body unit 12. The upper end portion in the +Z direction of the additional unit 13 and the lower end portion in the -Z direction of the main body unit 12 are connected. Thereby, it is possible to convey the paper P from the additional unit 13 to the main body unit 12. The discharge tray 17 is a portion where the paper P recorded by the line head 40 is discharged. The discharge tray 17 extends in the direction along the A axis. In the discharge tray 17, the ends of the plurality of papers P placed thereon in the +A direction are aligned along the +B direction.

[0014] The paper cassette 16 is a storage unit that stores the paper P. The paper cassette 16 has, for example, a first cassette 22 provided in the main body unit 12, and a second cassette 24 and a third cassette 26 provided in the additional unit 13. The first cassette 22 is formed in a rectangular parallelepiped box shape that opens in the +Z direction and stores the paper PA. The paper P (PA) stored in the first cassette 22 is fed into the conveyance path T by rotating the pickup roller 19A and the roller pair 19B. The second cassette 24 is located below the first cassette 22 in the direction along the Z-axis. The second cassette 24 is formed in a rectangular parallelepiped box shape that opens in the +Z direction and houses the paper PB. The paper P (PB) housed in the second cassette 24 is fed into the conveyance path T through the path T2 by rotating the pickup roller 19A and the roller pair 19B. The third cassette 26 is located below the second cassette 24 in the direction along the Z-axis within the additional unit 13. Note that the third cassette 26 has the same configuration as the second cassette 24, except for the arrangement.

[0015] The ink supply unit 30 supplies the ink Q to the line head 40. The cap unit 32 is configured in a box shape that opens in the -A direction. The cap unit 32 can reciprocate in the direction along the B-axis by being driven by a drive mechanism unit (not shown). When performing maintenance on the line head 40, the cap unit 32 moves in the +B direction to cover the discharge unit 42 described later and suck the ink Q. When recording is performed by the line head 40, the cap unit 32 retracts in the -B direction.

[0016] The wiper unit 34 includes a unit main body 36 capable of housing the ink Q and a wiper blade 37 provided on the unit main body 36 for wiping the ink Q adhering to the discharge unit 42. The wiper unit 34 can reciprocate in the direction along the X-axis by being driven by a drive mechanism unit (not shown). When performing maintenance on the line head 40, the wiper unit 34 moves in the +X direction while wiping the surface of the discharge unit 42 to recover the ink Q. When recording is performed by the line head 40, the wiper unit 34 retracts to the home position in the +X direction.

[0017] The waste liquid tank 38 is provided replaceably at substantially the central portion in the directions along the Y-axis and the Z-axis of the main body unit 12. The waste liquid tank 38 stores the ink Q recovered in the cap unit 32 and the ink Q recovered in the wiper unit 34. A control unit (not shown) includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and a storage (not shown), and controls the conveyance of the paper P in the recording apparatus 10 and the operations of each unit including the line head 40.

[0018] When in a state of being positioned at the home position before operation, the line head 40 is positioned above the paper cassette 16 and the waste liquid tank 38 in the direction along the Z-axis. The line head 40 is an example of a recording unit that records an image or the like on the paper P conveyed along a conveyance path T (to be described later) from the paper cassette 16. The line head 40 can be moved in the +A direction and the -A direction by being driven by a movement mechanism unit 44 (to be described later). Specifically, the line head 40 includes a carriage 41 driven by the movement mechanism unit 44 and a discharge unit 42 supported by the carriage 41. The discharge unit 42 discharges the ink Q supplied from the ink supply unit 30 toward the paper P.

[0019] The movement mechanism unit 44 of the present embodiment includes a rack portion 46, a pinion 48, and a motor (not shown). The rack portion 46 is attached to the bottom portion of the carriage 41 in the -Z direction. The rack portion 46 has a plurality of tooth portions (not shown). The pinion 48 is rotated in the forward direction or the reverse direction by the motor. A plurality of tooth portions (not shown) that mesh with the plurality of tooth portions of the rack portion 46 are formed on the outer peripheral portion of the pinion 48.

[0020] The conveyance path T extends from the paper cassette 16 to the discharge tray 17 and is the path along which the paper P is conveyed. A forward feed section 49 is arranged in the conveyance path T. Specifically, a pickup roller 19A, a roller pair 19B, a receiving roller pair 21, roller pairs 23, 25, a conveyance belt 31, a driving roller 33, a driven roller 35, a roller pair 27, and a discharge roller pair 29 are arranged. Each roller pair is rotated about an axis along the direction along the X axis. The driving roller 33 and the driven roller 35 are arranged at intervals in the direction along the B axis and are rotatable about an axis along the direction along the X axis.

[0021] The receiving roller pair 21 is rotatably provided at the lower end in the -Z direction in the main body unit 12. The receiving roller pair 21 receives the paper P conveyed from the additional unit 13.

[0022] The conveyance belt 31 is formed in a cylindrical shape and is wound around the driving roller 33 and the driven roller 35. Also, the conveyance belt 31 is positioned in the +A direction with respect to the line head 40. The conveyance belt 31 is circulated by the driving roller 33 being rotated by a motor (not shown). The paper P is conveyed in the +B direction when the conveyance belt 31 is circulated while being in contact with the outer peripheral surface of the conveyance belt 31.

[0023] Specifically, the conveyance path T has a path T1, a path T2, a path T3, a path T4, and a path T5. The path T1 extends from the end position in the -Y direction in the third cassette 26 to the nip center position N1 in the roller pair 23. The path T2 extends from the end position in the -Y direction in the second cassette 24 and merges with the path T1 at a position upstream of the receiving roller pair 21 in the path T1.

[0024] The path T3 extends from the nip center position N1 to the nip center position N2 in the roller pair 25. The path T4 extends from the end position in the -Y direction in the first cassette 22 and merges with the path T3. The path T5 extends from the nip center position N2 to the nip center position N3 in the discharge roller pair 29 via the conveyance belt 31 and the roller pair 27.

[0025] The reversing unit 50 has a reversing path R, four roller pairs 52, and a motor (not shown). Then, the reversing unit 50 reverses the front and back of the sheet P recorded by the line head 40, and then feeds the sheet P back into the conveyance path T again. The reversing path R includes a curved path R4 and is a path connected to the upstream and downstream parts with respect to the line head 40 in the conveyance path T. The reversing path R has a branch path R1, a switchback path R2, an upstream path R3, and a curved path R4. The branch path R1 branches from the path T5 at the +Z direction position with respect to the roller pair 27 and extends toward the -Y direction and +Z direction position. The switchback path R2 extends from the +Z direction end of the branch path R1 toward the +Y direction and +Z direction position.

[0026] The upstream path R3 is located upstream of the curved path R4 (to be described later) and downstream of the switchback path R2 in the conveyance direction of the sheet P. The upstream path R3 has a vertical path portion R3A and an inclined portion R3B. The vertical path portion R3A extends linearly in the -Z direction from the confluence position of the branch path R1 and the switchback path R2.

[0027] The curved path R4 is located downstream of the upstream path R3 in the conveyance direction of the sheet P. Specifically, the upstream end of the curved path R4 is connected to the lower end in the -Z direction of the inclined portion R3B. The curved path R4 is a path curved so as to be convex toward the -Z direction when viewed in the +X direction. Also, the curved path R4 merges into the path T3 at the nip center position N1 of the roller pair 23. The roller pair 23 is an example of the conveyance roller pair provided in the curved path R4. The roller pair 23 conveys the sheet P as it rotates.

[0028] The feeding unit 60 includes a feeding tray 100 as a medium placement device, a feeding roller 64, and a separating roller 66. The feeding unit 60 has a feeding path K in which the feeding roller 64 and the separating roller 66 are arranged. Then, the feeding unit 60 feeds the sheet P from the feeding tray 100 to the conveyance path T via the feeding path K. The feeding path K extends from the feeding tray 100 to the conveying path T and is connected to an upstream portion of the line head 40 in the conveying path T, and is the path through which the paper P is fed.

[0029] The feeding tray 100 is configured to be able to place a plurality of sheets of paper P. The feeding roller 64 is downstream of the feeding tray 100 and is disposed above the feeding path K in the feeding direction of the paper P in the feeding path K. The feeding roller 64 is rotated by a motor (not shown) to feed the paper P to the conveying path T while rotating.

[0030] The separating roller 66 is downstream of the feeding tray 100 and is disposed below the feeding path K in the feeding direction of the paper P in the feeding path K. The separating roller 66 has a predetermined load in the rotation direction of feeding the paper P. Thereby, one sheet of paper P is separated and fed from the plurality of sheets of paper P placed on the feeding tray 100. Note that a lift-up mechanism portion (not shown) for pushing up the paper P upward is provided between the feeding tray 100 and the separating roller 66.

[0031] FIG. 2 is a perspective view showing the closed state of the feeding tray 100. FIG. 3 is a perspective view showing the open state of the feeding tray 100. In FIG. 3, it is a view in which screws for fixing each component of the feeding tray 100 and holes through which the screws are inserted are omitted. FIG. 4 is a perspective view of the feeding tray 100. The configuration of the feeding tray 100 will be described.

[0032] As shown in FIGS. 2 and 3, the feeding tray 100 is provided so as to be displaceable between an open state and a closed state with respect to the main body unit 12. In this embodiment, the open state of the feeding tray 100 is hereinafter referred to as the use state. Also, in this embodiment, the closed state of the feeding tray 100 is hereinafter referred to as the storage state. The feeding tray 100 of this embodiment is disposed at a portion below the center in the direction along the Z axis on the -Y direction side surface of the main body unit 12.

[0033] As shown in FIG. 2, when the feeding tray 100 is in the stored state, the feeding tray 100 is stored in the main body unit 12. When the feeding tray 100 is in the stored state, since the paper P cannot be loaded, it is a state when the feeding tray 100 is not in use. As shown in FIG. 3, when the feeding tray 100 is in the use state, the feeding tray 100 is in a state of being tilted with respect to the main body unit 12, and in the use state, a plurality of sheets of paper P can be placed thereon.

[0034] After FIG. 3, for convenience of explanation, the normal direction of the placement surface 310 of the feeding tray 100 described later is defined as the D direction (the arrow direction is the +D direction), and the direction in which the paper P placed on the placement surface 310 is fed in the direction of the main body unit 12 along the placement surface 310 is defined as the E direction (the arrow direction is the +E direction), and a new orthogonal coordinate system represented by D-E-X is illustrated. Note that the opposite direction of the +E direction is the -E direction. Also, the opposite direction of the +D direction is the -D direction. The +D direction is the direction in which the paper P is stacked, and is the height direction and the thickness direction in the feeding tray 100.

[0035] As shown in FIGS. 3 and 4, the feeding tray 100 generally has a plate shape, and a plurality of sheets of paper P can be placed on the placement surface 310 of the placement portion 300 provided on the tray main body 200. The placement surface 310 is formed as a substantially flat surface. As will be described later, the placement surfaces 440 and 720 formed by other components are also substantially flat surfaces similar to the placement surface 310, and are formed as a substantially continuous flat surface (flush surface), in other words, a substantially uniform horizontal plane, and together with the placement surface 310, a plurality of sheets of paper P can be placed thereon. The tray main body 200 is formed in a rectangular shape in plan view from the +D direction.

[0036] A recessed portion 12a recessed in the inner direction of the main body unit 12 is formed in the main body unit 12. When the feeding tray 100 is in the stored state (FIG. 2), the outer surface 12c of the main body unit 12 and the outer surface 110 of the feeding tray 100 are formed as a substantially continuous flat surface (flush surface).

[0037] The feeding tray 100 is configured to be openable and closable about a rotation axis along the X-axis in the width direction between a storage state (FIG. 2) and a use state (FIG. 3). Further, rod-shaped link members 70 for connecting the feeding tray 100 and the main body unit 12 are provided at the -X direction end and the +X direction end of the tray main body 200. One end of the link member 70 connected to the tray main body 200 is rotatably connected to the tray main body 200 about a rotation axis 71 parallel to the X-axis. The other end of the link member 70 connected to the main body unit 12 is engaged with a guide rail 72 provided on the main body unit 12.

[0038] The guide rail 72 extends in the direction along the Z-axis, and the other end of the link member 70 moves along the guide rail 72. When the other end of the link member 70 abuts against the lower end of the guide rail 72, the position of the feeding tray 100 in the use state is restricted. That is, the link member 70 restricts the opening angle of the feeding tray 100 with respect to the main body unit 12 in the use state.

[0039] FIG. 5 is an exploded perspective view of the feeding tray 100. Note that FIG. 5 is an exploded perspective view of the main components constituting the feeding tray 100. The configuration of the feeding tray 100 will be described with reference to FIGS. 4 and 5.

[0040] As shown in FIGS. 4 and 5, the feeding tray 100 generally includes a tray main body 200, a placement portion 300, an edge guide 400 as a restricting portion, a displacement portion 500, a detection portion 600, a detection holding portion 700, and an adjustment portion 800.

[0041] The tray main body 200 functions as an exterior of the feeding tray 100 and a base member for receiving each component. The placement portion 300 functions as a frame for placing the paper P as a medium and installing each component at a predetermined position. The edge guide 400 restricts the movement of the paper P placed on the placement portion 300 in the first direction. In this embodiment, the first direction is the width direction of the paper P and is the X direction.

[0042] The displacement part 500 is a component that holds the edge guide 400 so as to be movable in the first direction. The detection part 600 is a component that detects the position of the edge guide 400 in the first direction. The detection holding part 700 is a component that holds the detection part 600. The adjustment part 800 is a component that enables adjustment of the positions of the edge guide 400, the displacement part 500, and the detection part 600 in the first direction.

[0043] The schematic assembly of the feeding tray 100 will be described. First, with the tray main body 200 as the base member, the adjustment part 800 is installed at a predetermined position on the inner surface of the tray main body 200. The adjustment part 800 is formed by connecting a pinion holding part 810 and a fixing part 850 for the detection part in a plate shape. The pinion holding part 810 holds the pinion 530 that constitutes the displacement part 500 via a fixing pin 820 installed by caulking. Specifically, the pinion holding part 810 slidably guides the pinion 530 on the outer periphery of the fixing pin 820 and rotatably holds it. Also, the fixing part 850 for the detection part fixes the circuit board 630 as the position detection part of the detection part 600.

[0044] Next, with the tray main body 200 as the base member, the placement part 300 is installed. The placement part 300 is installed on the inner surface of the tray main body 200 with reference to a reference position (not shown) formed on the tray main body 200.

[0045] When the placement unit 300 is installed on the tray body 200, both ends of the extension member 150 in the X direction are engaged and stored in the extension member opening 360 formed at the -E direction end of the placement unit 300 and the extension member storage part 350 formed along the +E direction from both ends in the X direction of the extension member opening 360 on the inner surface side thereof. Then, the placement unit 300 in this state is installed on the tray body 200. When the placement unit 300 storing the extension member 150 is installed on the tray body 200, the lower surface of the extension member 150 is guided by the extension member guide rib 240 of the tray body 200, and the extension member storage part 350 slides, so that it can extend in the -E direction from the extension member opening 360 and the extension member opening 250 formed in the tray body 200.

[0046] When the feeding tray 100 is in use and the extension member 150 stored in the tray body 200 and the placement unit 300 is pulled out and extended in the -E direction, the paper P can be supported in a stable state according to the size of the paper P to be placed. Further, when the feeding tray 100 is in the stored state, the extension member 150 is shortened in the +E direction and stored in the tray body 200 and the placement unit 300, so that the feeding tray 100 and the recording device 10 can be made more compact.

[0047] When the placement unit 300 is installed on the tray body 200, a plurality of fixing screw hole parts 380 formed in the placement unit 300 are located on the upper surface of the placement unit fixing dowel 210 of the tray body 200 formed opposite thereto. Further, when the placement unit 300 is installed on the tray body 200, the adjustment unit fixing screw hole part 320 formed in the placement unit 300 is located on the upper surface of the fixing pin 820 of the adjustment unit 800.

[0048] Next, the edge guide 400 is installed on the tray body 200 and the placement unit 300. The configuration of the edge guide 400 will be described below. The edge guide 400 includes a first edge guide 410 as a first regulating member for regulating the first end of the sheet P in the first direction, and a second edge guide 450 as a second regulating member for regulating the second end of the sheet P on the side opposite to the first end in the first direction. Here, the first end of the sheet P in the first direction is the end face (side face) of the sheet P in the +X direction. Also, the second end on the side opposite to the first end of the sheet P in the first direction is the end face (side face) of the sheet P in the -X direction.

[0049] The first edge guide 410 and the second edge guide 450 are configured to be substantially symmetric with respect to the conveyance direction (+E direction). The edge guide 400 (the first edge guide 410 and the second edge guide 450) is a plate-like member and is arranged to extend along the conveyance direction (+E direction) of the sheet P. The edge guide 400 is provided on the -X direction side and the +X direction side of the tray main body 200, and is interlocked by a displacement unit 500 (a pinion 530, a first rack portion 510, and a second rack portion 520) described later, and can move in opposite directions along the X axis. The pair of edge guides 400 (the first edge guide 410 and the second edge guide 450) can move in opposite directions to accommodate various sizes in the width direction of the sheet P to be placed.

[0050] Since the first edge guide 410 and the second edge guide 450 are configured in substantially the same manner, the configuration of the first edge guide 410 installed in the +X direction will be described, and only the different configurations of the second edge guide 450 will be described.

[0051] The first edge guide 410 includes a fixed portion 420, a movable portion 430, and a placement surface 440. The movable portion 430 has a plate shape and is configured to be rotatable so as to lie in the +X direction along the placement surface 440 in the stored state and to stand up with respect to the placement surface 440 in the use state (FIGS. 3 and 5). A flat surface 431 is provided in the -X direction of the movable portion 430 in the use state. The flat surface 431 is a surface substantially perpendicular to the placement surface 440. The side surface (the first end) of the sheet P in the width direction can be regulated by the flat surface 431.

[0052] The fixing portion 420 is plate-shaped and is fixed in an upright posture with respect to the placement surface 440. The fixing portion 420 is the portion where the user's fingers come into contact when moving the first edge guide 410 in the direction along the X-axis. A flat surface 421 is provided in the -X direction of the fixing portion 420. The flat surface 421 is a surface substantially perpendicular to the placement surface 440. The flat surface 421 regulates the side surface (the first end) in the width direction of the sheet P. That is, the flat surface 421 of the fixing portion 420 and the flat surface 431 of the movable portion 430 are formed continuously along the conveyance direction of the sheet P, and the side surface (the first end) in the width direction of the sheet P is regulated by the flat surface 421 and the flat surface 431.

[0053] On the first edge guide 410, a first rack portion 510 extending in the -X direction from the placement surface 440 is formed below the placement surface 440. The first rack portion 510 constitutes the displacement portion 500, and includes a first flat plate portion 511 extending in a flat plate shape in the -X direction, and a first rack 512 formed along the edge end portion on the +E direction side of the first flat plate portion 511 (along the X direction) on the lower side (the back surface side) of the first flat plate portion 511.

[0054] Also, a sheet metal holding portion 620 extending in the -E direction is fixed to the lower side in the -D direction of the first flat plate portion 511. Note that the first flat plate portion 511 and the sheet metal holding portion 620 may be integrally formed. The sheet metal holding portion 620 constitutes the detection portion 600, and a sheet metal 610 as the detected portion is fixed to the upper surface of the edge end portion in the -E direction of the sheet metal holding portion 620.

[0055] On the second edge guide 450, a second rack portion 520 is formed corresponding to the first rack portion 510 of the first edge guide 410. The second rack portion 520 includes a second flat plate portion 521 and a second rack 522 corresponding to the first flat plate portion 511 and the first rack 512. The second rack portion 520 constitutes the displacement portion 500 in the same manner as the first rack portion 510.

[0056] The first edge guide 410 configured as described above is inserted into the inside through the first opening 331 of the regulation part opening 330 formed in the placement part 300, etc., and is installed on the tray body 200. Note that the installation method may be to divide the first edge guide 410 into a component installed in the upward direction (+D direction) from the placement part 300 with reference to the placement part 300 and a component installed inside the placement part 300, and then install them on the tray body 200. Also, the installation of the second edge guide 450 is performed in the same manner as the first edge guide 410, such as inserting it into the inside through the second opening 332 of the regulation part opening 330 formed in the placement part 300, and is installed on the tray body 200. Also, the second edge guide 450 may be divided into a component installed in the upward direction (+D direction) from the placement part 300 with reference to the placement part 300 and a component installed inside the placement part 300, and then installed on the tray body 200.

[0057] By installing the edge guide 400, the pinion 530 that constitutes the displacement part 500 meshes with the second rack 522 that constitutes the displacement part 500 formed in the second edge guide 450 in the +E direction. Also, the pinion 530 meshes with the first rack 512 that constitutes the displacement part 500 formed in the first edge guide 410 in the -E direction. Note that the displacement part 500 of the present embodiment is configured such that, using a so-called rack and pinion mechanism, both racks move in opposite directions around the pinion with the center as a reference. By this assembly, the displacement part 500 is constituted.

[0058] When the first edge guide 410 and the placement part 300 are incorporated into the tray body 200, the sheet metal holding part 620 and the sheet metal 610 that constitute the detection part 600 are in a state of being exposed inside the detection part opening 340 formed in the placement part 300. Also, inside the detection part opening 340, the fixing notch part 860 formed in the detection part fixing part 850 that constitutes the adjustment part 800 installed first is in a state of being exposed.

[0059] Next, the detection holding part 700 is installed on the tray body 200 on which the placement part 300 is installed. The configuration of the detection holding part 700 will be described below. The detection holding part 700 is a member that holds the circuit board 630 as a position detection part constituting the detection part 600. The detection holding part 700 has a rectangular dish shape extending in the X direction and includes a holding part main body 710 formed to open in the -D direction. In the holding part main body 710, one detection part holding screw hole part 730 is formed at each edge part in the X direction.

[0060] Also, on the inner peripheral surface of the holding part main body 710 in the -D direction, the circuit board 630 is held in a form sandwiching both end parts in the X direction by the detection part holding screw hole part 730. Note that a circuit pattern is formed on the surface on the -D direction side of the circuit board 630 to detect the size in the width direction of the sheet P. Further, on the inner peripheral surface of the holding part main body 710, a plate member 750 (FIG. 6) having a protrusion part 751 (FIG. 6) protruding in the -D direction is installed.

[0061] The detection holding part 700 configured as described above is inserted into the detection part opening 340 of the mounting part 300 from above. By inserting the detection holding part 700 into the detection part opening 340, the sheet metal 610 as the detected part abuts on the circuit pattern of the circuit board 630 as the position detection part.

[0062] Note that when installing the first edge guide 410, it is installed so that the sheet metal 610 is located at the set initial position. And when the detection holding part 700 is inserted into the detection part opening 340, the sheet metal 610 is located at the set initial position of the circuit board 630. Also, when the detection holding part 700 is inserted into the detection part opening 340, the protrusion part 751 of the detection holding part 700 engages with the fixing notch part 860.

[0063] As described above, when assembling the main components to the tray body 200, finally, insert the screw S3 through the plurality of fixing screw hole parts 380 of the mounting part 300 and thread it into the mounting part fixing dowel 210 to fix the mounting part 300 to the tray body 200. Also, insert the screw S1 through the adjustment part fixing screw hole part 320 of the mounting part 300 and thread it into the fixing pin 820 of the adjustment part 800 to fix the adjustment part 800 to the mounting part 300.

[0064] Also, a screw S2 is inserted through a detection unit holding screw hole portion 730 of the detection holding unit 700 (holding unit main body 710) and screwed into a dowel 220 for detecting unit, thereby holding the detection holding unit 700 on the tray main body 200. When the detection holding unit 700 is screwed to the dowel 220 for detecting unit with the screw S2, the top surface of the dowel 220 for detecting unit protrudes upward compared to a holding portion 731 of the detection holding unit 700 described later that is sandwiched by the screw S2. Therefore, when the screw S2 is screwed, the holding portion 731 is not fixed by abutting against the top surface of the dowel 220 for detecting unit.

[0065] When the detection holding unit 700 (holding unit main body 710) is installed on the tray main body 200, the upper surface that is the outer surface of the holding unit main body 710, together with the placement surface 310 of the placement unit 300, constitutes a placement surface 720 for placing the sheet P. Note that the placement surface 720 corresponds to the first surface of the detection holding unit 700. By assembling each component as described above, the paper feed tray 100 is completed.

[0066] Hereinafter, the functions and operations of each component in the present embodiment will be described. The figures shown hereinafter illustrate, for the sake of convenience, the relevant components taken out and shown in order to explain the functions and operations of each component on the premise that each component of the paper feed tray 100 is assembled, and the irrelevant components may be omitted from the illustration.

[0067] FIG. 6 is a perspective view showing an adjustment unit 800 (pinion holding portion 810, fixing portion 850 for detection unit), a displacement unit 500 (pinion 530), and a detection holding unit 700 (holding unit main body 710, plate member 750) installed on the tray main body 200. FIG. 6 is a perspective view seen from an obliquely upward direction.

[0068] As shown in FIG. 6, a pinion 530 is rotatably guided on the outer periphery of a fixing pin 820 of a pinion holding portion 810. Further, a protrusion 751 formed on a plate member 750 of a detection holding portion 700 is inserted and engaged from above into a fixing notch portion 860 of a fixing portion 850 for a detection portion. By engaging the protrusion 751 with the fixing notch portion 860, the fixing portion 850 for a detection portion constituting the adjustment portion 800 and the detection holding portion 700 holding a circuit board 630 constituting the detection portion 600 are fixed. When the fixing portion 850 for a detection portion moves in the X direction, the detection holding portion 700 also moves in the X direction in conjunction therewith.

[0069] In other words, the adjustment portion 800 (the fixing notch portion 860 of the fixing portion 850 for a detection portion) engages with the detection holding portion 700 (the protrusion 751), and the detection holding portion 700 is interlocked with the operation of the adjustment portion 800. The details of the configuration in which the detection holding portion 700 moves in the X direction in conjunction with the adjustment portion 800 will be described later.

[0070] FIG. 7 is a plan view showing the adjustment portion 800, the displacement portion 500, the detection portion 600, and the detection holding portion 700. Note that FIG. 7 is a plan view seen from below. FIG. 8 is a cross-sectional view showing the detection portion 600 (sheet metal 610, circuit board 630), the displacement portion 500 (pinion 530, first rack 512), the mounting portion 300 (mounting surface 310, opening 340 for a detection portion), and the adjustment portion 800 (pinion holding portion 810, fixing portion 850 for a detection portion). Further, FIG. 8 is a cross-sectional view taken along line A-A shown in FIG. 4.

[0071] As shown in FIGS. 7 and 8, a first rack 512 extending in the X direction of a first rack portion 510 meshes with a pinion 530 rotatably guided on the outer periphery of a fixing pin 820 in the -E direction, and a second rack 522 extending in the X direction of a second rack portion 520 meshes therewith in the +E direction. For this reason, for example, when a user grips a fixing portion 420 of the first edge guide 410 and moves the first edge guide 410 in a direction along the X axis, the second edge guide 450 moves in a direction following the first edge guide 410 via the pinion 530.

[0072] In other words, the displacement portion 500 (the first rack 512, the second rack 522, and the pinion 530) moves the first regulating member (the first edge guide 410) and the second regulating member (the second edge guide 450) in opposite directions in the first direction (the width direction of the sheet P: the X direction).

[0073] The sheet metal 610 held by the sheet metal holding portion 620 fixed to the lower surface of the first flat plate portion 511 is located on the lower surface of the circuit board 630 held by the holding portion main body 710. Note that the circuit board 630 is fixed by a hooking structure using the elastic deformation of the substrate fixing portion 740 formed to protrude downward from the holding portion main body 710.

[0074] A plurality of circuit patterns corresponding to the sheet size are formed on the circuit board 630 in order to detect the size in the width direction of the sheet P (for example, A4 size, B5 size, etc.). Note that the circuit patterns are formed on the lower surface of the circuit board 630. The sheet metal 610 (specifically, a plurality of contact terminals provided on the sheet metal 610) contacts the circuit patterns from below in the E direction and short - circuits them with respect to this circuit board 630.

[0075] Note that the sheet metal 610 moves in the X direction in conjunction with the first edge guide 410, and while sliding the position of the contact terminal that contacts the circuit pattern, it moves to contact (short - circuit) different positions of the circuit pattern. Then, the sheet size is detected by the combination of the circuit patterns short - circuited in the transverse direction (the E direction), including having a sensor (not shown) read them. Note that when detecting the sheet size, it can also be said that the circuit board 630 as the position detection portion detects the position of the sheet metal 610 as the detected portion in the width direction of the sheet P.

[0076] As shown in FIG. 8, the detection portion 600 (the sheet metal 610, the circuit board 630) is provided between the placement portion 300 (specifically, the placement surface 310 that is the upper surface of the placement portion 300) and the adjustment portion 800 (specifically, the lower surface 870 of the pinion holding portion 810 and the detection - portion fixing portion 850).

[0077] Further, as shown in FIG. 8, the detection unit 600 (sheet metal 610, circuit board 630) is in a form that overlaps with the displacement unit 500 (pinion 530, first rack 512, first rack portion 510) in the D direction which is the stacking direction of the paper P.

[0078] FIG. 9 is a perspective view showing a state cut along the X-D plane with the pinion 530 as the center. With reference to FIG. 9, a method for adjusting the positions of the edge guide 400 as a regulating unit, the displacement unit 500, and the detection unit 600 by the adjustment unit 800 will be described. In FIG. 9, the edge guide 400 and the detection unit 600 are not shown.

[0079] As a position adjustment method, in the present embodiment, the placement unit 300 installed on the feed tray 100 is used as a reference, and by moving the adjustment unit 800 with respect to the placement unit 300, basic alignment of the edge guide 400, the displacement unit 500, and the detection unit 600 including the adjustment unit 800 is performed. It should be noted that the placement unit 300 is fixed to the tray body 200 and it is assumed that the position adjustment with the main body unit 12 side has been performed.

[0080] The position adjustment method performs adjustment in the X direction by the adjustment unit 800 according to the amount of deviation in the X direction of the paper position on the main body unit 12 side. Specifically, since the moving amount of the adjustment unit 800 is determined by the amount of deviation in the X direction of the paper position with respect to the position of the recording unit (line head 40) on the main body unit 12 side, the adjustment unit 800 is moved in accordance with the amount of deviation.

[0081] Here, in the adjustment unit fixing screw hole portion 320, a fixing portion 321 is formed in a region that is one step lower. In the fixing portion 321, an elliptical hole portion 322 having the X direction as the longitudinal direction and the E direction as the short direction is formed. A screw S1 is inserted through the hole portion 322.

[0082] And when moving the adjustment unit 800, first, as shown in FIG. 9, by loosening the screwing of the screw S1 and the fixing pin 820, the fixing of the fixing portion 321 sandwiched between the screw S1 and the fixing pin 820 is loosened.

[0083] As a result, it becomes possible to move the screw S1 engaged with the fixing pin 820 in the X direction (the longitudinal direction of the hole portion 322). By moving the screw S1 in the X direction, the adjustment unit 800 (pinion holding unit 810, fixing unit 850 for the detection unit) moves in conjunction. Note that by moving the adjustment unit 800, the protrusion 751 of the detection holding unit 700 that engages with the fixing notch 860 of the adjustment unit 800 (fixing unit 850 for the detection unit) moves in conjunction. Therefore, by moving the screw S1 in the X direction, the detection holding unit 700 moves in conjunction.

[0084] Also, by moving the screw S1 in the X direction, the pinion holding unit 810 moves in conjunction in the X direction. Therefore, the pinion 530 held by the pinion holding unit 810 (fixing pin 820) also moves in the X direction. By this operation, the first rack 512 and the second rack 522 meshing with the pinion 530 move in conjunction in the X direction. Therefore, the first edge guide 410 and the second edge guide 450 also move in the X direction in a driven manner.

[0085] Note that, as shown in FIG. 9, a scale portion 830 indicating the amount of movement during movement is formed to protrude stepwise on the pinion holding unit 810. On the upper surface of the scale portion 830, in this embodiment, scales 831 formed by a plurality of ribs along the E direction at intervals of 1 mm in the X direction are configured.

[0086] A scale window portion 370 for exposing the scale portion 830 is formed in the mounting portion 300 above the scale portion 830. Further, in the scale window portion 370, at the center position in the X direction, an indicating portion 371 extending in a triangular shape indicating the position of the scale 831 during adjustment is formed toward the center of the scale window portion 370.

[0087] For example, a case will be described where the adjustment unit 800 is moved 2 mm in the +X direction. In this case, the scale 831 exposed in the scale window 370 and the indicator 371 are moved 2 mm (two scales) in the +X direction, taking into consideration the difference between the position of the scale unit 830 currently indicated by the indicator 371 and the position of the scale 831 (streaks) when viewed from the +D direction. By the above adjustment method, the adjustment unit 800 can adjust the positions of the edge guide 400, the displacement unit 500, and the detection unit 600.

[0088] After the position adjustment by the adjustment unit 800 is completed, the screw S1 is screwed again into the fixing pin 820 to sandwich and fix the short side of the fixing unit 321 located between the fixing pin 820 and the screw S1. This makes it possible to fix the edge guide 400, the displacement unit 500, and the detection unit 600, which have been adjusted by the adjustment unit 800, to the mounting unit 300, which serves as a reference.

[0089] 10 is a cross-sectional view showing the detection and holding portion 700 (detection portion holding screw hole portion 730), the tray main body 200 (detection portion holding dowel 220), and the screw S2. Also, FIG. 10 is a cross-sectional view taken along line BB shown in FIG. With reference to FIG. 10, the manner in which the detection and holding portion 700 is held by the screw S2 will be described.

[0090] In this embodiment, the screw S2 is not designed to completely fix the detection unit holding screw hole 730 (more specifically, holding portion 731 described later) of the detection holding portion 700 to the detection unit holding dowel 220. In this embodiment, the screw S2 is screwed into the detection unit holding dowel 220 to prevent the detection holding portion 700 from floating up and to hold the position.

[0091] In the detection unit holding screw hole portion 730 of the detection holding unit 700, a holding portion 731 is formed in a region that is one step lower. In the holding portion 731, an elliptical hole portion 732 is formed with the X direction as the longitudinal direction and the E direction as the short direction. A screw S2 is inserted into the hole portion 732. Further, on the detection unit holding dowel 220, at a position one step lower from the top surface of the detection unit holding dowel 220, holding ribs 221 that are in contact with the side surfaces of the detection unit holding dowel 220 in the +E direction and -E direction and extend in the X direction are formed.

[0092] The length of the holding rib 221 in the X direction is formed longer than the diameter in the short direction of the hole portion 732. Also, the position of the top surface of the detection unit holding dowel 220 substantially coincides with the position of the upper surface of the holding portion 731. And the position of the top surface of the holding rib 221 is formed downward from the lower surface 733 of the holding portion 731. Therefore, when the screw S2 is inserted into the hole portion 732 of the holding portion 731 and screwed into the detection unit holding dowel 220, when the head S2a of the screw S2 abuts against the top surface of the detection unit holding dowel 220, a gap G is formed between the lower surface 733 of the holding portion 731 and the top surface of the holding rib 221.

[0093] Also, the upper surface of the holding portion 731 in the short direction of the hole portion 732 is restricted from moving upward when it abuts against the head S2a of the screw S2. Thereby, upward floating of the detection holding unit 700 is prevented.

[0094] Also, since the gap G is formed, the holding portion 731 is not fixed by the screw S2. Therefore, the detection holding unit 700 can move in the X direction, which is the longitudinal direction of the hole portion 732. Note that the other one detection unit holding screw hole portion 730 is configured in the same manner. Therefore, when the screw S1 is moved in the X direction during alignment, the detection holding unit 700 moves in the X direction in conjunction. Note that by setting the gap G small, when the detection holding unit 700 is pressed from above, the amount of downward movement can be suppressed.

[0095] Note that the detection and holding unit 700 of the present embodiment can be removed upward from the mounting surface 720 side by releasing the screw S2 of the screw hole portion 730 for holding the detection unit from the screwing with the dowel 220 for holding the detection unit. As a result, the detection unit 600 (circuit board 630) and the detection and holding unit 700 are integrally configured and are detachably installed from the mounting surface 720 side, which is the first surface side with respect to the mounting unit 300.

[0096] FIG. 11 is a cross-sectional view showing the end portion 711 in the -X direction of the detection and holding unit 700 (holding unit main body 710). Further, FIG. 11 is a cross-sectional view taken along the line C-C shown in FIG. 4. With reference to FIG. 11, a structure for preventing a planar gap between the end portion 711 in the -X direction of the holding unit main body 710 and the mounting unit 300 will be described. Note that the structure for preventing a planar gap between the end portion in the +X direction of the holding unit main body 710 and the mounting unit 300 is the same as the structure for preventing a planar gap between the end portion 711 in the -X direction of the holding unit main body 710 and the mounting unit 300, and thus the description thereof is omitted.

[0097] As described above, the detection and holding unit 700 of the present embodiment moves in the X direction in conjunction with the movement of the adjustment unit 800. As shown in FIG. 11, a receiving portion 390 for receiving the end portion 711 in the -X direction of the holding unit main body 710 is formed in the mounting unit 300. The receiving portion 390 is recessed by one step from the mounting surface 310, and the lower surface 712 of the end portion 711 and the receiving surface 391 of the receiving portion 390 are formed at positions having a gap in cross section.

[0098] The receiving portion 390 is formed to have the width dimension in the E direction of the opening portion 340 for the detection unit in a planar manner. Further, the receiving portion 390 is formed to have a length (in other words, a length at which a gap is generated) in the X direction such that when the end portion 711 moves in the -X direction, the end surface 713 of the end portion 711 does not contact the end surface 392 in the -X direction of the receiving portion 390 in a planar manner. Further, the receiving portion 390 is formed to have a length in the X direction such that when the end portion 711 moves in the +X direction, the receiving surface 391 of the receiving portion 390 and the lower surface 712 of the end portion 711 overlap in a planar manner. Note that the above-described configuration is similarly configured in the +X direction of the holding unit main body 710.

[0099] With the above-described configuration, when the detection and holding unit 700 (holding unit main body 710) moves in the X direction, the lower surface 712 of the holding unit main body 710 (end portion 711) moves by sliding on the receiving surface 391 of the receiving unit 390. In this case, even when the detection and holding unit 700 (holding unit main body 710) moves to the maximum within its moving range, both end portions 711 in the X direction of the holding unit main body 710 overlap with the receiving unit 390 of the placement unit 300 in the X direction (width direction of the paper P) when viewed from above, so no planar gap is generated.

[0100] In other words, the loading portion 300 has a receiving portion 390 which overlaps with the end portion 711 of the holding portion main body 710 in the width direction of the paper P when viewed in a plane from the +D direction, so that no planar gap occurs even when the detection holding portion 700 moves.

[0101] FIG. 12 is a plan view showing the marking portion 760 of the detection and holding portion 700. As shown in FIG. Referring to FIG. 12, the indicator 760 provided on the detection and holding unit 700 will be described.

[0102] The marking portion 760 of this embodiment is configured on the mounting surface 720 as the first surface of the holder main body 710 of the detection and holding portion 700. In this embodiment, the marking portion 760 is configured in an area surrounded by two detection-unit holding screw holes 730 formed in the X direction, as shown by the two-dot chain line in FIG.

[0103] The marking section 760 is a section that indicates the paper end surface positions corresponding to the width direction sizes of various paper sheets P and the position of the edge guide 400. The marking method may be by engraving, printing, etching, or the like on the placement surface 720. The marking method may also be by attaching a printed sheet.

[0104] According to this embodiment, the following effects can be obtained.

[0105] The paper feed tray 100 as the medium placement device of the present embodiment includes a placement unit 300 for placing a medium (paper P), an edge guide 400 as a restricting unit for restricting the movement of the paper P placed on the placement unit 300 in the first direction (the width direction of the paper P), and a displacement unit 500 for holding the edge guide 400 movably in the width direction of the paper P. Further, the paper feed tray 100 includes a detection unit 600 for detecting the position of the edge guide 400 in the width direction of the paper P, and an adjustment unit 800 for adjusting the positions of the edge guide 400, the displacement unit 500, and the detection unit 600 in the width direction of the paper P. And the edge guide 400 has a first restricting member (first edge guide 410) for restricting the end face of the paper P in the +X direction as the first end in the width direction of the paper P, and a second restricting member (second edge guide 450) for restricting the end face of the paper P in the -X direction as the second end on the side opposite to the first end in the width direction of the paper P. Also, the displacement unit 500 can move the first edge guide 410 and the second edge guide 450 in opposite directions in the width direction of the paper P. Further, the detection unit 600 is provided between the placement unit 300 and the adjustment unit 800. With this configuration, since the detection unit 600 is provided between the placement unit 300 and the adjustment unit 800, specifically, between the placement surface 310 of the placement unit 300 and the lower surface 870 of the adjustment unit 800 (detection unit fixing part 850), the dimension of the paper feed tray 100 in the stacking direction (height direction) of the paper P can be suppressed.

[0106] In the paper feed tray 100 of the present embodiment, the detection unit 600 (sheet metal 610, circuit board 63) is in a form that overlaps with the displacement unit 500 (pinion 530, first rack 512, first rack part 510) in the D direction which is the stacking direction of the paper P. With this configuration, the dimension of the paper feed tray 100 in the stacking direction can be suppressed.

[0107] In the paper feed tray 100 of the present embodiment, the detection unit 600 is provided on the edge guide 400 as a restricting unit, and includes a sheet metal 610 as a detected unit that interlocks with the edge guide 400, and a circuit board 630 as a position detection unit for detecting the position of the sheet metal 610 in the width direction of the paper P. With this configuration, since the position detector (circuit board 630) detects the position of the detected part (sheet metal 610) interlocked with the regulating part (edge guide 400), the position of the edge guide 400 can be detected with a simple configuration. Further, since the detector 600 detects by a combination of the position detector (circuit board 630) and the detected part (sheet metal 610) interlocked with the edge guide 400, various detection methods can be used.

[0108] In the feeding tray 100 of the present embodiment, the detector 600 detects the position of the regulating part (edge guide 400) when the detected part (sheet metal 610) contacts different positions of the position detector (circuit board 630). With this configuration, the detector 600 functions as a contact type sensor that detects the position of the detected part (sheet metal 610) when the detected part (sheet metal 610) contacts different positions of the position detector (circuit board 630). Thus, it is possible to shorten the distance between the detected part (sheet metal 610) and the position detector (circuit board 630), and further suppress the dimension in the stacking direction.

[0109] The feeding tray 100 of the present embodiment includes a detection holding part 700 that holds the detector 600 and has a placement surface 720 as the first surface. The placement surface 720, together with the placement surface 310 of the placement part 300, constitutes a placement surface for placing the paper P. With this configuration, by holding the detector 600 (circuit board 630) and using the placement surface 720 as the first surface as a part of the placement surface together with the placement surface 310, the dimension in the stacking direction can be suppressed by the thickness that constitutes the first surface (placement surface 720).

[0110] In the feeding tray 100 of the present embodiment, the detection holding part 700 has a marking part 760 on the placement surface 720 as the first surface. With this configuration, the detection and holding unit 700 has markings on the first surface that constitutes the placement surface 720, for example, markings indicating the position of the edge of the paper corresponding to the size in the width direction of various sheets of paper P and the position of the restricting unit (edge guide 400). Therefore, it serves as a guide for moving the edge guide 400 when placing the paper P. Also, when the position of the edge guide 400 is adjusted by the adjustment unit 800, since the detection and holding unit 700 is configured to move together with the edge guide 400, it is possible to suppress the deviation between the position of the edge guide 400 and the position of the marking.

[0111] In the paper feed tray 100 of the present embodiment, the detection unit 600 (circuit board 630) and the detection and holding unit 700 are integrally configured and are detachably installed from the side of the placement surface 720 that becomes the first surface with respect to the placement unit 300. With this configuration, for example, when incorporating the detection unit 600 (circuit board 630) and the detection and holding unit 700 into the paper feed tray 100 or removing them, the detachable property is improved because they can be detached and attached from the side of the placement surface 720. Also, with this configuration, the assemblability and maintainability are improved.

[0112] In the paper feed tray 100 of the present embodiment, the adjustment unit 800 (fixed notch portion 860) engages with the detection and holding unit 700 (protrusion portion 751), and the detection and holding unit 700 is interlocked with the operation of the adjustment unit 800. With this configuration, the adjustment unit 800 has a simple configuration of engaging with the detection and holding unit 700 and interlocking the detection and holding unit 700 with the operation of the adjustment unit 800. When adjusting the position of the restricting unit (edge guide 400), the detection unit 600 (circuit board 630) held by the detection and holding unit 700 can be moved to adjust the position of the detection unit 600 (circuit board 630). In particular, in a configuration where the detection unit 600 (circuit board 630) is detachable, compared to a case where the adjustment unit 800 and the detection and holding unit 700 are engaged, the replacement of the detection unit 600 (circuit board 630) becomes even easier when they are integrally configured.

[0113] In the paper feed tray 100 of the present embodiment, the detection and holding unit 700 (the end 711 of the holding unit main body 710) has a placement unit 300 and a region (receiving unit 390) that overlaps in the first direction (the width direction of the paper P) in a top view (planar view from the +D direction). When the regulating unit (edge guide 400) is adjusted in position by the adjustment unit 800, the detection and holding unit 700 that holds the detection unit 600 (circuit board 630) also moves. Therefore, it is necessary to secure a moving range for the detection and holding unit 700 on the placement unit 300. For this reason, with the above configuration, in the moving range of the detection and holding unit 700, the end 711 of the detection and holding unit 700 overlaps with the receiving unit 390 of the placement unit 300 in the first direction, so that a planar gap in the first direction can be prevented even when the detection and holding unit 700 moves. Therefore, it is possible to suppress the intrusion of foreign matter into the paper feed tray 100 and improve the design of the paper feed tray 100.

[0114] The recording apparatus 10 of the present embodiment includes the above-described paper feed tray 100 and a recording unit (line head 40) that performs recording on the paper P placed on the paper feed tray 100. With this configuration, since the recording apparatus 10 includes the paper feed tray 100 that suppresses the dimension in the stacking direction, the recording apparatus can be miniaturized.

[0115] In the recording apparatus 10 of the present embodiment, the paper feed tray 100 is displaceable between a use state in which the paper P can be stacked and a storage state in which the paper P cannot be stacked. With this configuration, since the paper feed tray 100 is displaceable between the use state and the storage state, the recording apparatus 10 in the storage state when the paper feed tray 100 is not in use can be miniaturized. In particular, in the recording apparatus 10, when the paper feed tray 100 is provided on the side like an MP (multi-purpose) tray, so-called a manual feed tray, the dimension in the side direction of the recording apparatus 10 during storage can be suppressed in particular.

[0116] 2. Modification Example 1 In this embodiment, the detection unit 600 (sheet metal 610, circuit board 63) substantially entirely overlaps with the displacement unit 500 (pinion 530, first rack 512, first rack unit 510) in the D direction which is the stacking direction of the sheet P. However, it is not limited to this, and a part of the stacking direction may overlap.

[0117] 3. Modification Example 2 In this embodiment, the feed tray 100 has been described as an example of an MP (multi-purpose) tray, a so-called manual feed tray. However, it is not limited to this, and it can also be applied to a sheet cassette having the same function as the sheet cassette 16 of this embodiment, a document tray having an ADF (automatic document feeder function), etc.

[0118] 4. Modification Example 3 In this embodiment, when detecting the sheet size in the detection unit 600, the sheet metal 610 is short-circuited to the circuit pattern formed on the circuit board 630, and the detection is performed by the combination of the circuit patterns at that position. However, it is not limited to this, and the sheet size may be detected by using a slide volume or the like and changing the resistance value by moving a mover or the like.

[0119] 5. Modification Example 4 In this embodiment, as the detection unit 600, the sheet metal 610 is used as a contact type sensor that contacts the circuit pattern formed on the circuit board 630. However, it is not limited to this, and a non-contact type sensor, for example, an optical sensor or the like may be used to detect by utilizing the difference in reflectance, light transmission / non-transmission, etc.

[0120] 6. Modification Example 5 In this embodiment, as the detection unit 600, a configuration is used in which the sheet metal 610 is brought into contact (short-circuited) with the circuit pattern formed on the circuit board 630. However, it is not limited to this, and a mechanical switch that turns ON / OFF when receiving a force from a part configured corresponding to the sheet size may be used.

[0121] 7. Modification Example 6 In the present embodiment, the detection unit 600 detects the paper size using the sheet metal 610 that interlocks with the operation of the first edge guide 410. However, the present invention is not limited to this, and the detection unit 600 may use a configuration that interlocks with the operation of the second edge guide 450 instead of interlocking with the operation of the first edge guide 410. Further, the paper size may be detected by using detection units that interlock with the first edge guide 410 and the second edge guide 450, respectively.

Description of Reference Numerals

[0122] 10... Recording apparatus, 40... Line head as a recording unit, 100... Feeding tray, 300... Placing unit, 310... Placing surface, 400... Edge guide as a regulating unit, 410... First edge guide as a first regulating member, 450... Second edge guide as a second regulating member, 500... Displacement unit, 600... Detection unit, 610... Sheet metal as a detected unit, 630... Circuit board as a position detection unit, 700... Detection holding unit, 711... End portion, 720... Placing surface as a first surface, 751... Protrusion, 760... Marking unit, 800... Adjusting unit, P... Paper as a medium.

Claims

1. A placement part for placing a medium, A restricting part for restricting the movement of the medium placed on the placement part in a first direction, A displacement part for holding the restricting part so as to be movable in the first direction, A detection part for detecting the position of the restricting part in the first direction, An adjustment part capable of adjusting the positions of the restricting part, the displacement part, and the detection part in the first direction, and comprising: The restricting part is A first restricting member for restricting a first end of the medium in the first direction, A second restricting member for restricting a second end of the medium opposite to the first end in the first direction, and A detection holding part having a first surface and holding the detection part; The displacement part is capable of moving the first restricting member and the second restricting member in opposite directions to each other in the first direction, and The detection part overlaps the displacement part when viewed from the conveyance direction of the medium, The first surface, together with the placement part, constitutes a placement surface for placing the medium, characterized in that it is a medium placement device.

2. The medium placement device according to Claim 1, wherein the detection part comprises a detected part provided on the restricting part and interlocking with the restricting part, and a position detection part for detecting the position of the detected part in the first direction, characterized in that it is a medium placement device.

3. The medium placement device according to Claim 2, wherein the detection part detects the position of the restricting part by the detected part coming into contact with different positions of the position detection part, characterized in that it is a medium placement device.

4. The medium placement device according to any one of Claims 1 to 3, wherein the detection holding part has a marking part on the first surface, characterized in that it is a medium placement device.

5. The medium placement device according to any one of Claims 1 to 4, wherein the detection part and the detection holding part are integrally formed and are detachably installed on the placement part from the first surface side, characterized in that it is a medium placement device.

6. The medium placement device according to Claim 4 or Claim 5, wherein the adjustment part engages with the detection holding part and is interlocked with the operation of the adjustment part, characterized in that it is a medium placement device.

7. The medium placement device according to any one of Claims 1 to 6, wherein the detection holding part has a region overlapping the placement part in the first direction when viewed from above, characterized in that it is a medium placement device.

8. The medium placement device according to any one of Claims 1 to 7, A recording unit that records on the medium placed on the medium placing device, characterized by comprising a recording apparatus. **Claim 9** The recording apparatus according to claim 8, wherein the medium placing device is displaceable between a use state in which the medium can be loaded and a storage state in which the medium cannot be loaded.

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