Medium feeding device, recording device and controlling method of recording device

Abstract

To provide: a medium feeding device that can prevent the device from becoming large; a recording device; and a control method for a recording device.SOLUTION: The medium feeding device includes: a drive unit that drives feed rollers; an arm unit that supports the feed rollers; and a displacement unit that can come into contact with the arm unit. The feed rollers feed a medium placed on the medium placement unit by forward rotation power from the drive unit. The arm unit displaces the feed rollers between a contact position and a separation position. The contact position is a position where the feed rollers contact the medium placed on the medium placement unit, and the separation position is a position where the feed rollers are separated from the medium placed on the medium placement unit. The displacement unit rotates the arm unit so as to displace the feed rollers from the separation position to the contact position by forward rotation power from the drive unit and rotates the arm unit so as to displace the feed rollers from the contact position to the separation position by reverse rotation power from the drive unit.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a medium feeding device, a recording device, and a method for controlling a recording device. [Background technology]

[0002] For example, Patent Document 1 discloses a medium feeding device including a feed roller that feeds a medium placed on a medium placement unit, an arm unit that houses the feed roller, and a roller drive unit that drives the feed roller. In such a medium feeding device, the feed roller is retracted from the medium by rotation of a cam. In this way, by suppressing contact of the feed roller with the medium, it is possible to suppress bleed marks caused by the feed roller. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-302006 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in such a medium feeding device, a cam drive unit for rotating the cam is provided in addition to the roller drive unit, which may lead to an increase in the size of the device. [Means for solving the problem]

[0005] A medium feeding device that solves the above problem includes a feed roller capable of feeding a medium placed on a medium placement section, a drive section that drives the feed roller, an arm section that supports the feed roller and is rotatable around a drive shaft, and a displacement section that is capable of abutting against the arm section and rotates the arm section by normal rotational force from the drive section, wherein the feed roller feeds the medium placed on the medium placement section by normal rotational force from the drive section, and the arm section moves the feed roller between an abutting position and a separated position. The feed roller is displaced, and the contact position is a position where the feed roller contacts the medium placed on the media loading section, and the separation position is a position where the feed roller is separated from the medium placed on the media loading section, and the displacement section rotates the arm section so as to displace the feed roller from the separation position to the abutment position by forward rotation force from the drive unit, and rotates the arm section so as to displace the feed roller from the abutment position to the separation position by reverse rotation force from the drive unit.

[0006] A recording device that solves the above problem includes a medium feeding device and a recording unit that records on a medium. The medium feeding device includes a feed roller capable of feeding a medium placed on a medium placement unit, a drive unit that drives the feed roller, an arm unit that supports the feed roller and is rotatable around a drive shaft, and a displacement unit that can abut against the arm unit and rotates the arm unit by a forward rotation force from the drive unit. The feed roller feeds the medium placed on the medium placement unit by the forward rotation force from the drive unit, and the arm unit moves the feed roller between an abutment position and a separation position. the contact position is a position where the feed roller contacts the medium placed on the medium placement section and the separated position is a position where the feed roller is separated from the medium placed on the medium placement section, the displacement section rotates the arm section so as to displace the feed roller from the separated position to the contact position by forward rotation power from the drive section and rotates the arm section so as to displace the feed roller from the contact position to the separated position by reverse rotation power from the drive section. The recording section records on the medium fed by the feed roller.

[0007] A control method for a recording device that solves the above problem includes the control method for a recording device, wherein the displacement portion is displaceable between a first position and a second position, the first position being a position where the feed roller is displaced to the abutment position, and the second position being a position where the feed roller is displaced to the separated position, and the displacement portion is displaced to the second position at least in any one of the following cases: when there is no next job after a job of recording on a medium is completed, when there is no next job for a predetermined time after a job of recording on a medium is completed, and when the power is turned off.

[0008] A recording device that solves the above problem includes a medium feeding device, a recording unit that records on a medium, and a control unit. The medium feeding device includes a feed roller capable of feeding a medium placed on a medium placement unit, a drive unit that drives the feed roller, an arm unit that supports the feed roller and is rotatable around a drive shaft, and a displacement unit that can abut against the arm unit and rotates the arm unit by forward rotational force from the drive unit, the feed roller feeds the medium placed on the medium placement unit by forward rotational force from the drive unit, the arm unit displaces the feed roller between an abutment position and a separation position, the abutment position is a position where the feed roller abuts against the medium placed on the medium placement unit, and the separation position is a position where the feed roller is displaced from the medium placed on the medium placement unit by the forward rotational force from the drive unit. a first position where the arm portion is separated from the drive shaft, and the displacement unit rotates the arm portion so as to displace the feed roller from the separated position to the abutment position by a forward rotation force from the drive unit, and rotates the arm portion so as to displace the feed roller from the abutment position to the separated position by a reverse rotation force from the drive unit, the displacement unit is displaceable between a first position and a second position, the first position is a position where the feed roller is displaced to the abutment position by non-abutment with the arm portion, and the second position is a position where the feed roller is displaced to the separated position by abutment with the arm portion, and the displacement unit supports the arm portion from below in the vertical direction at the second position. The arm portion is detachable from the drive shaft, and the control unit displaces the displacement unit from the second position to the first position when attaching or detaching the arm portion to or from the drive shaft when the displacement unit is at the second position. The recording unit records on the medium fed by the feed roller.

[0009] A control method for a recording device that solves the above problem includes a control method for a recording device that has the above-mentioned medium feeding device and a recording unit that records on the medium fed by the feeding roller, wherein the arm unit is detachable from the drive shaft, and when the displacement unit is in the second position, the displacement unit is displaced from the second position to the first position when the arm unit is detached from the drive shaft. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a recording apparatus according to a first embodiment. [Diagram 2] FIG. 1 is a perspective view showing a recording apparatus according to a first embodiment. [Diagram 3] FIG. 1 is a perspective view showing a recording apparatus according to a first embodiment. [Figure 4] 1 is a cross-sectional view showing a recording apparatus according to a first embodiment. [Diagram 5] FIG. 1 is a perspective view showing a medium feeding device according to a first embodiment. [Figure 6] FIG. 2 is a schematic diagram showing a medium feeding device according to the first embodiment. [Figure 7] FIG. 2 is a schematic diagram showing a medium feeding device according to the first embodiment. [Figure 8] FIG. 2 is a side view showing the medium feeding device of the first embodiment. [Figure 9] FIG. 2 is a side view showing the medium feeding device of the first embodiment. [Figure 10] FIG. 2 is a top view showing the medium feeding device of the first embodiment. [Figure 11] 5 is a flowchart showing a contact process according to the first embodiment. [Figure 12] 5 is a flowchart showing a first spacing process according to the first embodiment. [Figure 13] 6 is a flowchart showing a second spacing process according to the first embodiment. [Figure 14] 6 is a flowchart showing a medium feeding monitoring process according to the first embodiment. [Figure 15] 5 is a flowchart showing a control process at the time of attachment / detachment in the first embodiment. [Figure 16] 13 is a flowchart showing a first spacing process according to the second embodiment. [Figure 17] FIG. 11 is a perspective view showing a medium feeding device according to a third embodiment. [Figure 18] FIG. 11 is a perspective view showing a medium feeding device according to a third embodiment. [Figure 19]FIG. 11 is a perspective view showing a medium feeding device according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] [First embodiment] An embodiment of a medium feeding device, a recording device, and a control method for a recording device will be described below. The recording device includes a medium feeding device. In the following description, a direction intersecting with the vertical direction Z is referred to as a width direction X, and a direction intersecting with the vertical direction Z and the width direction X is referred to as a front-rear direction Y. One of the width directions X is referred to as a first width direction X1, and the other of the width directions X is referred to as a second width direction X2. One of the front-rear directions Y is referred to as a front Y1, and the other of the front-rear directions Y is referred to as a rear Y2. The upper side of the vertical direction Z is referred to as an upper side Z1, and the lower side of the vertical direction Z is referred to as a lower side Z2.

[0012] <Configuration of Recording Device 11> As shown in FIG. 1, recording device 11 is a device that records on a medium. Recording device 11 may be a device that records on a medium by ejecting liquid. The liquid may be, for example, ink. The liquid may be, for example, a plurality of colors or a single color. The medium may be, for example, paper. Paper includes photo paper, which will be described later. Recording device 11 may be a device that can record on a plurality of types of paper.

[0013] The recording device 11 is configured in a rectangular parallelepiped shape. The recording device 11 has a front surface 12. The front surface 12 is a flat surface facing forward Y1. The recording device 11 has a back surface 13. The back surface 13 is a flat surface facing rear Y2. The recording device 11 has a left side surface 14. The left side surface 14 is a flat surface facing in the second width direction X2. The recording device 11 has a right side surface 15. The right side surface 15 is a flat surface facing in the first width direction X1. The recording device 11 has a bottom surface 16. The bottom surface 16 is a flat surface facing downward Z2. The recording device 11 has a top surface 17. The top surface 17 is a flat surface facing upward Z1.

[0014] Thus, the top surface 17 includes a flat surface on which an object can be loaded. The object can be another recording device 11 or a notebook computer. As long as the top surface 17 includes a flat surface on which an object can be loaded, the entire area of ​​the top surface 17 may be flat, or some areas of the top surface 17 may not be flat.

[0015] The recording device 11 includes a housing 20 and a main body 21. The housing 20 is configured to house the main body 21. The housing 20 constitutes at least a part of the left side surface 14, a part of the right side surface 15, a part of the bottom surface 16, and a part of the top surface 17 of the recording device 11, but may also constitute at least the entire left side surface 14, the entire right side surface 15, the entire bottom surface 16, and the entire top surface 17 of the recording device 11.

[0016] In this way, the housing 20 has multiple surfaces, namely the left side surface 14, right side surface 15, bottom surface 16, and top surface 17 of the recording device 11. The left side surface 14, right side surface 15, bottom surface 16, and top surface 17 of the recording device 11 can also be said to be the left side surface, right side surface, bottom surface, and top surface of the housing 20, respectively. Note that the housing 20 may include at least a portion of the front surface 12 of the recording device 11. Also, the housing 20 may include at least a portion of the rear surface 13 of the recording device 11.

[0017] The main body 21 constitutes at least the entire front surface 12 of the recording device 11, but may also constitute at least a part of the front surface 12 of the recording device 11. In this way, the main body 21 has the front surface 12 of the recording device 11. The front surface 12 of the recording device 11 can also be said to be the front surface of the main body 21. In addition, the rear surface 13 of the recording device 11 may be constituted by the rear surface of the housing 20 and the rear surface of the main body 21, but may also be constituted by only the rear surface of the housing 20, or may also be constituted by only the rear surface of the main body 21.

[0018] The housing 20 includes a flat bottom plate 22. The bottom plate 22 is made of metal, but may be made of resin, or may be made of both a metal plate and a resin plate. The bottom plate 22 includes a through hole 22A. The through hole 22A opens in the bottom plate 22 along the vertical direction Z. The through hole 22A is a hole for attaching and detaching a member housed in the housing 20 from the lower Z2 side of the bottom plate 22.

[0019] The recording device 11 includes a capacity visualizing section 31. The capacity visualizing section 31 is provided on the main body 21. The capacity visualizing section 31 makes it possible to visually check the amount of liquid contained in the liquid storage section 40, which will be described later. The capacity visualizing section 31 is made up of a number of viewing windows, each corresponding to a different color of liquid.

[0020] The recording device 11 includes an operation panel 33. The operation panel 33 is provided on the main body 21. The operation panel 33 includes an operation unit 34 and a display unit 35. The operation unit 34 can be operated by a user. The operation unit 34 may be composed of a plurality of operation buttons. The display unit 35 displays information related to the recording device 11. The operation panel 33 is located on the front surface 12 of the recording device 11.

[0021] The main body 21 is configured to be displaceable in the front-rear direction Y with respect to the housing 20. Specifically, the main body 21 is configured to be displaceable in the front-rear direction Y with respect to the housing 20 between a closed position, a first open position, and a second open position.

[0022] The main body 21 can be placed in a closed position. The closed position is a position where the main body 21 is housed in the housing 20. The closed position is a position where the main body 21 protrudes from the housing 20 by a predetermined distance D0 toward the front Y1, but may be a position where the main body 21 does not protrude from the housing 20. In other words, the main body 21 constitutes part of the left side surface 14, part of the right side surface 15, part of the bottom surface 16, and part of the top surface 17 of the recording device 11, but does not have to constitute the left side surface 14, right side surface 15, bottom surface 16, and top surface 17 of the recording device 11.

[0023] 2, the main body 21 can be displaced to a first open position. The first open position is an open position where the main body 21 protrudes from the housing 20 toward the front Y1. In particular, the first open position is a position where the main body 21 protrudes from the housing 20 by a first distance D1 toward the front Y1. The first distance D1 is a distance longer than the predetermined distance D0. In this manner, when the main body 21 is disposed in the first open position, at least a part of the interior of the main body 21 is exposed from the housing 20.

[0024] 3, the main body 21 can be displaced to a second open position. The second open position is an open position in which the main body 21 protrudes from the housing 20 toward the front Y1. In particular, the second open position is a position in which the main body 21 protrudes from the housing 20 by a second distance D2 toward the front Y1. The second distance D2 is a distance longer than the first distance D1. In this manner, when the main body 21 is disposed in the second open position, at least a part of the interior of the main body 21 is exposed from the housing 20.

[0025] The recording device 11 includes a control unit 23. The control unit 23 is mounted on the main body 21. The control unit 23 is housed in the housing 20. The control unit 23 is not exposed from the housing 20 when the main body 21 is placed in the closed position, the first open position, or the second open position.

[0026] The control unit 23 controls the recording device 11. The control unit 23 controls various operations executed by the recording device 11. The control unit 23 may be configured as a circuit including: α: one or more processors that execute various processes according to a computer program; β: one or more dedicated hardware circuits that execute at least a part of the various processes; or γ: a combination thereof. The hardware circuit is, for example, an application specific integrated circuit. The processor includes a CPU and memory such as RAM and ROM, and the memory stores program code or instructions configured to cause the CPU to execute processes. The memory, i.e., computer-readable medium, includes any readable medium that can be accessed by a general-purpose or dedicated computer.

[0027] The recording device 11 includes an opening / closing unit 37. The opening / closing unit 37 is provided on the main body 21. The opening / closing unit 37 is located on the front surface 12 of the recording device 11. The opening / closing unit 37 is configured to be rotatable about a rotation axis along the width direction X at a lower end portion 37A. This allows the opening / closing unit 37 to be opened and closed relative to the front surface 12 of the recording device 11.

[0028] The recording device 11 has an ejection outlet 38. The ejection outlet 38 is provided in the main body 21. The ejection outlet 38 is an opening for ejecting a medium recorded by a recording unit 48 described below. The ejection outlet 38 opens in the front Y1 of the recording device 11. That is, the ejection outlet 38 is provided on the front surface 12 of the recording device 11 so as to open in the front Y1. In other words, the ejection outlet 38 is provided on the front surface of the main body 21 so as to open in the front Y1.

[0029] The discharge outlet 38 is exposed in the front Y1 of the recording device 11 when the opening / closing part 37 is open. The discharge outlet 38 is not exposed when the opening / closing part 37 is closed, but may be exposed even when the opening / closing part 37 is closed. The discharge outlet 38 is located in the second width direction X2 of the liquid storage part 40, which will be described later.

[0030] The recording device 11 includes a paper discharge tray 37B. The paper discharge tray 37B is provided in the main body 21. The paper discharge tray 37B is provided on the inner wall surface of the opening / closing section 37. The paper discharge tray 37B is exposed when the opening / closing section 37 is open, and a medium after recording can be placed on the paper discharge tray 37B. The paper discharge tray 37B may be configured to be extendable and contractible in the front-rear direction Y.

[0031] The recording device 11 includes a grip portion 39. The grip portion 39 is provided on the main body 21. The grip portion 39 is provided above the discharge port 38 in the Z1 direction. The grip portion 39 is provided on the front surface 12 of the recording device 11 at a position where the user can grip it from the front Y1. That is, the grip portion 39 is provided on a surface of the main body 21 facing the front Y1 at a position where the user can grip it from the front Y1. In this way, the grip portion 39 can be gripped by the user when displacing the main body 21 in the front-rear direction Y. In particular, even when a plurality of recording devices 11 are stacked in the vertical direction Z or a plurality of recording devices 11 are installed side by side in the width direction X, the grip portion 39 can be easily gripped by the user from the front Y1 side.

[0032] As shown in Fig. 2, the recording device 11 includes a liquid storage unit 40. The liquid storage unit 40 is mounted on the main body 21. The liquid storage unit 40 is configured to store a liquid used for recording on a medium. In other words, the liquid storage unit 40 is configured to store a liquid to be supplied to a recording unit 48, which will be described later. The liquid storage unit 40 may be a tank-type storage unit into which the liquid can be poured.

[0033] The liquid storage section 40 includes a storage chamber 41, a liquid inlet 42, and a cap 43. The storage chamber 41 is configured to store a liquid. The liquid inlet 42 is an opening configured to allow liquid to be injected into the storage chamber 41. The cap 43 covers the liquid inlet 42. The cap 43 seals the storage chamber 41, thereby preventing the storage chamber 41 from drying. By removing the cap 43 from the liquid inlet 42, it becomes possible to inject liquid from the liquid inlet 42 into the storage chamber 41. The liquid storage section 40 may include a plurality of storage chambers 41, a plurality of liquid inlets 42, and a plurality of caps 43, each corresponding to a different color of liquid.

[0034] The liquid storage portion 40 is not exposed from the housing 20 when the main body 21 is disposed in the closed position. The liquid storage portion 40 is exposed from the housing 20 when the main body 21 is disposed in the first open position. In this manner, when the main body 21 is disposed in the first open position, the liquid inlet 42 is exposed from the housing 20 by removing the cap 43. This makes it possible to inject liquid from the liquid inlet 42 into the storage chamber 41. The liquid storage portion 40 is also exposed from the housing 20 when the main body 21 is disposed in the second open position.

[0035] The recording device 11 includes a waste liquid mounting section 45. The waste liquid mounting section 45 is configured to be able to mount a waste liquid container 46. The waste liquid container 46 is configured to be able to recover liquid discharged as waste liquid from a recording section 48 (described later) via a maintenance device (not shown). The waste liquid mounting section 45 is mounted on the main body 21. The waste liquid mounting section 45 is provided above Z1 the discharge port 38.

[0036] The waste liquid mounting section 45 is not exposed from the housing 20 when the main body 21 is disposed in the closed position. The waste liquid mounting section 45 is exposed from the housing 20 when the main body 21 is disposed in the first open position. In this manner, the waste liquid mounting section 45 is exposed from the housing 20 when the main body 21 is disposed in the first open position. This allows the waste liquid container 46 to be attached and detached from the waste liquid mounting section 45. Note that the waste liquid mounting section 45 is also exposed from the housing 20 when the main body 21 is disposed in the second open position.

[0037] As shown in FIG. 3, the recording device 11 includes a recording unit 48. The recording unit 48 is configured to record on a medium. The recording unit 48 may be configured to record on the medium by ejecting liquid onto the medium. The recording unit 48 is mounted on the main body 21. The recording unit 48 is provided at a position adjacent to the liquid storage unit 40 in the front-rear direction Y. The recording unit 48 is provided rearward Y2 of the liquid storage unit 40.

[0038] The recording unit 48 is exposed from the housing 20 when the main body 21 is disposed in the second open position. In particular, a carriage 51, which will be described later, is exposed from the housing 20 when the main body 21 is disposed in the second open position. The recording unit 48 is not exposed from the housing 20 when the main body 21 is disposed in the closed position or the first open position.

[0039] The recording device 11 includes a transport path 49. The transport path 49 is a path for transporting a medium. The transport path 49 is provided in the main body 21. A portion of the transport path 49 is exposed from the housing 20 when the main body 21 is placed in the second open position. In particular, of the transport path 49, a recording area RA where recording to the medium is performed by the recording unit 48 is exposed from the housing 20 when the main body 21 is placed in the second open position. A portion of the transport path 49 is not exposed from the housing 20 when the main body 21 is placed in the closed position or the first open position.

[0040] 4, the recording unit 48 includes a carriage 51 and a liquid ejection head 52. The carriage 51 supports the liquid ejection head 52 from above Z1. The liquid ejection head 52 is provided below the carriage 51, at a position Z2. In other words, the liquid ejection head 52 is mounted on the carriage 51.

[0041] The liquid ejection head 52 includes a plurality of nozzles (not shown). Each of the plurality of nozzles opens toward a medium supported by a support unit 53 (described later). Each of the plurality of nozzles ejects liquid. The liquid ejection head 52 ejects liquid from the plurality of nozzles toward the medium supported by the support unit 53. In this manner, the recording unit 48 is configured to perform recording on the medium by ejecting liquid onto the medium. The liquid ejection head 52 is a serial head type that ejects liquid as the carriage 51 moves in the width direction X, but may be a line head type.

[0042] The recording device 11 includes a support unit 53. The support unit 53 is mounted on the main body 21. The support unit 53 is configured to support a medium. In particular, the support unit 53 supports the medium in a recording area RA where recording is performed on the medium by the recording unit 48.

[0043] The recording device 11 includes a medium placement section 54. The medium placement section 54 is capable of placing one or more sheets of media. The medium placement section 54 may be a tray on which media can be placed. The medium placement section 54 is mounted on the main body 21. The medium placement section 54 is displaceable from the main body 21 along the front-rear direction Y. The medium placement section 54 is pulled out from the main body 21 in the forward direction Y1, thereby enabling the placement and removal of media. In this manner, the forward direction Y1 corresponds to an example of a pull-out direction in which the medium placement section 54 is pulled out.

[0044] The medium placement section 54 includes a partition plate 54A. The partition plate 54A is located at the center of the medium placement section 54 in the front-rear direction Y. The partition plate 54A divides the medium placement section 54 in the front-rear direction Y. The medium placement section 54 includes a first medium placement section 54B. The medium placement section 54 may include a second medium placement section 54C. The first medium placement section 54B and the second medium placement section 54C are sections separated in the front-rear direction Y by the partition plate 54A. The first medium placement section 54B is located rearward Y2 from the second medium placement section 54C. The first medium placement section 54B can be used to place one or more media before reading. The second medium placement section 54C can be used to place one or more media after reading.

[0045] The recording device 11 includes a medium feeding device 60. When the medium loading section 54 is attached to the main body 21, the medium feeding device 60 is located above the medium loading section 54 in the area Z1. More specifically, when the medium loading section 54 is attached to the main body 21, the medium feeding device 60 is located above the first medium loading section 54B in the area Z1. The medium feeding device 60 feeds the media loaded on the medium loading section 54 one sheet at a time.

[0046] The recording device 11 includes a transport unit 55. The transport unit 55 is configured to transport a medium. The transport unit 55 is mounted on the main body 21. The transport unit 55 transports the medium fed by the medium feeding device 60 along the transport path 49.

[0047] The transport unit 55 includes a plurality of rollers and a plurality of motors serving as drive sources. In particular, the transport unit 55 includes a transport roller pair 56. The transport roller pair 56 is located upstream of the transport path 49 of the support unit 53. The transport roller pair 56 transports the medium along the transport path 49 to the support unit 53. The transport unit 55 also includes a discharge roller pair 57. The discharge roller pair 57 is located downstream of the transport path 49 of the support unit 53. The discharge roller pair 57 discharges the recorded medium along the transport path 49.

[0048] In this manner, the medium placed on the medium placement unit 54 is fed by the medium feeding device 60. The medium fed by the medium feeding device 60 is then transported along the transport path 49 by the transport unit 55. As a result, the recording unit 48 records on the medium transported along the transport path 49 by the transport unit 55. That is, the recording unit 48 records on the medium fed by the medium feeding device 60. In other words, the recording unit 48 records on the medium fed by the feed roller 63, which will be described later.

[0049] The transport unit 55 includes an inverting unit 58. That is, the inverting unit 58 is mounted on the main body 21. The recording device 11 also includes the inverting unit 58. The inverting unit 58 may be configured to be detachable from the rear side Y2 of the main body 21. The inverting unit 58 includes a plurality of rollers. The inverting unit 58 is configured to transport the medium along the transport path 49.

[0050] The transport path 49 includes a reversing path 49A. The reversing path 49A is a path that connects the transport roller pair 56 and the reversing unit 58. The reversing path 49A extends along the front-rear direction Y. After recording is performed on the surface of the medium by the recording unit 48 in the recording area RA, the transport roller pair 56 transports the medium along the reversing path 49A to the reversing unit 58. The reversing unit 58 is configured to transport the medium along the transport path 49 in a state in which the medium transported along the reversing path 49A is inverted. In other words, the reversing unit 58 inverts the medium fed by the medium feeding device 60.

[0051] In this way, the medium inverted by the inversion unit 58 is transported again to the recording area RA, so that the recording unit 48 can record on the back side of the medium. This allows the recording unit 48 to print on both sides of the medium. That is, the recording unit 48 can record after the medium is inverted by the inversion unit 58. In particular, the recording unit 48 may be capable of recording on photo paper that is printable on both sides as the medium.

[0052] The recording device 11 includes a medium detection unit 59. The medium detection unit 59 is provided along the transport path 49. The medium detection unit 59 may be provided on the transport path 49 between the medium placement unit 54 and the inversion unit 58, or may be provided between the inversion unit 58 and the transport roller pair 56. The medium detection unit 59 detects the leading edge of the medium fed by the medium feeding device 60. In more detail, the medium detection unit 59 detects the leading edge of the medium fed by a feeding roller 63, which will be described later.

[0053] <Configuration of medium feeding device 60> The medium feeding device 60 will now be described in detail. 4 and 5, the medium feeding device 60 includes a feeding roller unit 61 and a drive shaft 62. The feeding roller unit 61 is provided rotatably about the drive shaft 62. The drive shaft 62 extends along the width direction X. The drive shaft 62 may be a drive shaft for transmitting power to the feeding roller unit 61.

[0054] The feed roller unit 61 includes a feed roller 63. That is, the medium feeding device 60 includes the feed roller 63. The feed roller unit 61 may include a plurality of feed rollers 63. The feed roller unit 61 includes an arm portion 64. That is, the medium feeding device 60 includes the arm portion 64.

[0055] The feed roller 63 is housed in the arm portion 64. The feed roller 63 is provided at a tip portion 64B of the arm portion 64. The feed roller 63 is supported rotatably about a first rotation shaft 63A. The first rotation shaft 63A extends along the width direction X. The feed roller 63 is capable of feeding a medium placed on the medium placement portion 54.

[0056] The arm portion 64 houses various members including the feed roller 63. The arm portion 64 includes a base end portion 64A and a tip end portion 64B. The base end portion 64A may be located forward Y1 from the tip end portion 64B.

[0057] The arm portion 64 is provided so as to be rotatable around the drive shaft 62 at the base end portion 64A. That is, the arm portion 64 is rotatable around the drive shaft 62. In addition, the drive shaft 62 is configured to support the arm portion 64 rotatably.

[0058] The arm portion 64 is detachable from the drive shaft 62. More specifically, when the main body 21 is in the closed position and the medium placement portion 54 is removed from the main body 21, the arm portion 64 is exposed through the through hole 22A. In this manner, when the main body 21 is in the closed position and the medium placement portion 54 is removed from the main body 21, the arm portion 64 is detachable through the through hole 22A.

[0059] The arm portion 64 rotatably supports the feed roller 63 at the tip portion 64B. In particular, the arm portion 64 supports the feed roller 63 so as to be able to swing by providing a play between the arm portion 64 and the feed roller 63.

[0060] The arm unit 64 rotates about the drive shaft 62 to move the feed roller 63 forward and backward relative to the medium placed on the medium placement unit 54. The arm unit 64 can bring the feed roller 63 into contact with the medium placed on the medium placement unit 54. The inclination angle of the arm unit 64 can be changed depending on the number of media placed on the medium placement unit 54. In this way, the arm unit 64 can be displaced so as to change the distance between the feed roller 63 and the medium placement unit 54 depending on the number of media placed on the medium placement unit 54. In other words, the arm unit 64 can displace the feed roller 63 depending on the inclination angle.

[0061] 5, the arm portion 64 includes an engaged portion 64C. The engaged portion 64C is engageable with a second engaging portion 30F, which will be described later. The engaged portion 64C may be an engaging recess that opens toward the rear Y2.

[0062] 6 and 7, the arm unit 64 can be displaced between a feeding position and a retracted position by rotating around the drive shaft 62. The feeding position is a position where the medium placed on the medium loading unit 54 can be fed, as shown in Fig. 6. The feeding position is a position where the feeding roller 63 is displaced to the contact position. The contact position is a position where the feeding roller 63 contacts the medium placed on the medium loading unit 54.

[0063] 7, the retracted position is a position that does not interfere with the drawing out of the medium loading unit 54. The retracted position is a position where the feed roller 63 is displaced to a separated position. The separated position is a position where the feed roller 63 is separated from the medium loaded on the medium loading unit 54.

[0064] The recording device 11 includes an arm retraction unit 30. The arm retraction unit 30 is configured to retract the arm unit 64 to a retracted position when the medium placement unit 54 is pulled out in the pull-out direction. The retracted position is a position that does not interfere with the pulling out of the medium placement unit 54, as shown in FIG.

[0065] The arm retraction portion 30 is provided on the main body 21. The arm retraction portion 30 is L-shaped when viewed from the width direction X. The arm retraction portion 30 is provided rotatable about a shaft 30A. The shaft 30A extends along the width direction X.

[0066] The arm retraction section 30 includes a main body section 30B, a first lever 30C, and a second lever 30D. The first lever 30C protrudes downward Z2 from the main body section 30B. The second lever 30D protrudes forward Y1 from the main body section 30B.

[0067] The arm retraction portion 30 includes a first engagement portion 30E and a second engagement portion 30F. The first engagement portion 30E is provided at the tip of the first lever 30C. The first engagement portion 30E is capable of engaging with a slide member (not shown). The first engagement portion 30E may be an engagement hole. The second engagement portion 30F is provided at the tip of the second lever 30D. The second engagement portion 30F is capable of engaging with the engaged portion 64C. The second engagement portion 30F may be an engagement protrusion.

[0068] The arm retraction section 30 is biased upward Z1 by a biasing member (not shown). The arm section 64 is located at the retracted position when no external force is applied. The arm section 64 may be displaced between the feeding position and the retracted position by the driving force of a motor (not shown). The arm section 64 may be biased downward Z2 by a biasing member (not shown).

[0069] The slide member slides toward the rear Y2 as the medium placement portion 54 is attached to the rear Y2. In this case, as shown in FIG. 6, the first engagement portion 30E also moves toward the rear Y2. This causes the arm retraction portion 30 to rotate about the shaft 30A against the biasing force from the biasing member. Then, the arm retraction portion 30 displaces the arm portion 64 from the retracted position to the feeding position.

[0070] The slide member becomes slidable in the forward direction Y1 as the medium placement portion 54 is pulled out in the forward direction Y1. In this manner, as the slide member slides in the forward direction Y1, the arm retraction portion 30 receives a biasing force from the biasing member and rotates about the axis 30A, as shown in Fig. 7. Then, the arm retraction portion 30 displaces the arm portion 64 from the feeding position to the retracted position.

[0071] As shown in FIG. 5, the medium feeding device 60 includes a driving unit 65. The driving unit 65 is a power source for the feed roller unit 61. The driving unit 65 may be a motor. The driving unit 65 supplies power to the feed roller unit 61 by rotating a drive shaft 62. In particular, the driving unit 65 supplies power to the feed roller unit 61 by rotating a gear 62A axially attached to the drive shaft 62. In particular, the driving unit 65 drives the feed roller 63. The driving unit 65 drives a displacement unit 86, which will be described later.

[0072] The drive unit 65 can perform forward drive and reverse drive. The forward drive is a drive that can supply forward rotation power to the feed roller unit 61. The forward rotation power is a power that rotates the feed roller 63 forward. The reverse drive is a drive that can supply reverse power to the feed roller unit 61. The reverse power is a power that acts in the opposite direction to the forward rotation power. When the forward rotation power of the drive unit 65 is transmitted, the drive shaft 62 can rotate in a first rotation direction R1. When the reverse rotation power of the drive unit 65 is transmitted, the drive shaft 62 can rotate in a second rotation direction R2.

[0073] <Configuration of Displacement Unit 67> The medium feeding device 60 includes a displacement unit 67. The displacement unit 67 is provided separately from the feed roller unit 61. The displacement unit 67 is provided on the second width direction X2 side relative to the feed roller unit 61.

[0074] The displacement unit 67 is a unit that displaces the feed roller 63. In detail, the displacement unit 67 is a unit that displaces the arm portion 64, thereby displacing the feed roller 63.

[0075] The displacement unit 67 includes a unit housing 87. The unit housing 87 houses various members that constitute the displacement unit 67. The displacement unit 67 is fixed to the main body 21. Therefore, the unit housing 87 does not displace in response to the power from the drive unit 65.

[0076] <Configuration of power transmission unit 66> The medium feeding device 60 includes a power transmission unit 66. The power transmission unit 66 is capable of transmitting power from the drive unit 65 to the feeding roller 63. The power transmission unit 66 is capable of transmitting power from the drive unit 65 to a displacement unit 86 described later.

[0077] The power transmission portion 66 includes a first power transmission portion 68 and a second power transmission portion 69. The first power transmission portion 68 is housed in the arm portion 64. The second power transmission portion 69 is housed in the displacement unit 67.

[0078] The first power transmission unit 68 is a transmission unit used as the first transmission path. The first transmission path is a transmission path for transmitting power from the drive unit 65 to the feed roller 63. The first power transmission unit 68 is a transmission unit to which power from the drive unit 65 is transmitted by the rotation of the drive shaft 62. The first power transmission unit 68 transmits power to the feed roller 63 in accordance with the power from the drive unit 65. In other words, the first power transmission unit 68 is capable of transmitting power from the drive unit 65 to the feed roller 63.

[0079] The first power transmission unit 68 includes a plurality of gears 70-75, 77-79. That is, the power transmission unit 66 includes a plurality of gears 70-75, 77-79. The first power transmission unit 68 includes a first rotating shaft 63A. The first power transmission unit 68 includes a second rotating shaft 76. Each of the plurality of gears 70-75, 77-79 is pivotally attached to the arm unit 64 so as to be rotatable about an axis extending along the width direction X. Each of the plurality of gears 70-75, 77-79 meshes with each other in sequence.

[0080] Each of the gears 70, 72, and 74 rotates in a first rotation direction R1 when the forward rotation power of the drive unit 65 is transmitted thereto. Each of the gears 71, 73, and 75 rotates in a second rotation direction R2 when the forward rotation power of the drive unit 65 is transmitted thereto. Each of the gears 70, 72, and 74 rotates in the second rotation direction R2 when the reverse rotation power of the drive unit 65 is transmitted thereto. Each of the gears 71, 73, and 75 rotates in the first rotation direction R1 when the reverse rotation power of the drive unit 65 is transmitted thereto.

[0081] In particular, among the multiple gears 70-75, 77-79, the gear 70 is provided at the most upstream position in the power path of the first power transmission unit 68. The gear 70 is axially attached to the drive shaft 62. In this manner, the gear 70 is a member to which the power from the drive unit 65 is transmitted by the rotation of the drive shaft 62.

[0082] The gear 75 is axially attached to the second rotating shaft 76. The gear 75 rotates the second rotating shaft 76 by rotating. The gear 75 transmits the reverse power of the drive unit 65 as power in the first rotation direction R1 to both the first power transmission unit 68 and the second power transmission unit 69. Specifically, when the medium placed on the medium placement unit 54 is fed by the feed roller 63, the gear 75 rotates in the same direction as the rotation direction of the feed roller 63.

[0083] The gear 77 is axially attached to the second rotating shaft 76. Thus, the gear 77 is a member to which the power from the driving unit 65 is transmitted by the rotation of the second rotating shaft 76. The gear 77 includes. The gear 77 itself may be a one-way clutch, or a configuration in which a one-way clutch is combined with the gear 77. In other words, the first power transmission unit 68 includes a one-way clutch. The gear 77 is axially attached to the second rotating shaft 76. When the second rotating shaft 76 rotates in the second rotation direction R2, the gear 77 rotates together with the second rotating shaft 76 in the second rotation direction R2. When the second rotating shaft 76 rotates in the first rotation direction R1, the gear 77 rotates idly and does not rotate.

[0084] Among the multiple gears 70-75, 77-79, the gear 79 is provided at the most downstream position in the power path of the first power transmission unit 68. The gear 79 is axially attached to the first rotating shaft 63A. The gear 79 rotates the first rotating shaft 63A. The gear 79 transmits power from the driving unit 65 to the first rotating shaft 63A. In other words, the gear 79 transmits power from the driving unit 65 to the feed roller 63.

[0085] Each of the gears 77 and 79 rotates in the second rotation direction R2 when the forward rotation power of the drive unit 65 is transmitted thereto. When the forward rotation power of the drive unit 65 is transmitted thereto, the gear 78 rotates in the first rotation direction R1. The gear 77 does not rotate because the reverse rotation power of the drive unit 65 is not transmitted thereto. Therefore, the reverse rotation power of the drive unit 65 is not transmitted to each of the gears 77 to 79.

[0086] In this way, the feed roller 63 can feed the medium placed on the medium placement unit 54 by rotating while being in contact with the medium placed on the medium placement unit 54. In particular, the feed roller 63 can feed the medium placed on the medium placement unit 54 one by one. The feed direction in which the feed roller 63 feeds the medium may be backward Y2. In other words, the feed direction in which the feed roller 63 feeds the medium may be the direction opposite to the pull-out direction, but it does not have to be the exact opposite direction to the pull-out direction, and may be a direction that includes a component of the direction opposite to the pull-out direction.

[0087] In particular, gear 77 transmits the forward rotation power from drive unit 65 to feed roller 63, but does not transmit the reverse rotation power from drive unit 65 to feed roller 63. As a result, feed roller 63 feeds the media placed on medium placement unit 54 by the forward rotation power from drive unit 65. On the other hand, the reverse rotation power from drive unit 65 is not transmitted downstream from gear 77, and is therefore not transmitted to feed roller 63 either. In this way, the second rotation direction R2 becomes the feeding direction of feed roller 63.

[0088] The second power transmission unit 69 is a transmission path used as the second transmission path. The second transmission path is a transmission path for transmitting power from the drive unit 65 to the displacement unit 86 described below. The second power transmission unit 69 is a transmission unit to which the power from the drive unit 65 is transmitted by the rotation of the drive shaft 62. The second power transmission unit 69 transmits the power to the displacement unit 86 in accordance with the power from the drive unit 65. In other words, the second power transmission unit 69 is capable of transmitting the power from the drive unit 65 to the displacement unit 86.

[0089] The second power transmission unit 69 includes a torque limiter 80. That is, the power transmission unit 66 includes the torque limiter 80. The torque limiter 80 is provided at the most upstream position in the power path of the second power transmission unit 69. The torque limiter 80 is axially attached to the drive shaft 62. In this manner, the torque limiter 80 is a member to which the power from the drive unit 65 is transmitted by the rotation of the drive shaft 62. That is, the torque limiter 80 is provided coaxially with the drive shaft 62.

[0090] Torque limiter 80 is configured to cut off the transmission of power when a predetermined load is applied. Therefore, when the predetermined load is not applied, torque limiter 80 rotates together with drive shaft 62 when drive shaft 62 rotates. When a load equal to or greater than the predetermined load is applied, torque limiter 80 idles and does not rotate even if drive shaft 62 rotates.

[0091] The second power transmission unit 69 includes a plurality of gears 81 to 83. The second power transmission unit 69 includes a rack 84. That is, the medium feeding device 60 includes the rack 84. Each of the plurality of gears 81 to 83 is axially attached to the unit housing 87 so as to be rotatable around an axis extending along the width direction X. Note that each of the plurality of gears 81 to 83 may be axially attached to the displacement unit 67. Each of the plurality of gears 81 to 83 meshes with each other in sequence.

[0092] In particular, the gear 81 is connected to the torque limiter 80. Therefore, when the torque limiter 80 rotates, the gear 81 rotates together with the torque limiter 80. In other words, the gear 81 rotates when there is no predetermined load, but does not rotate when there is a load equal to or greater than the predetermined load. The gear 83 meshes with the rack 84. The gear 83 transmits power from the drive unit 65 to the rack 84.

[0093] The rack 84 is movable along the front-rear direction Y. The rack 84 is movable in parallel. More specifically, the rack 84 is movable backward Y2 toward the feed roller 63 and forward Y1, which is the opposite direction to the rear Y2. The rear Y2 corresponds to an example of a first movement direction, and the forward Y1 corresponds to an example of a second movement direction. The rack 84 meshes with the gear 83. The rack 84 moves the displacement portion 86 along the front-rear direction Y.

[0094] Each of the gears 81 and 83 rotates in a first rotation direction R1 when the forward rotation power of the drive unit 65 is transmitted thereto when there is no predetermined load. The gear 82 rotates in a second rotation direction R2 when the forward rotation power of the drive unit 65 is transmitted thereto when there is no predetermined load. Each of the gears 81 and 83 rotates in the second rotation direction R2 when the reverse rotation power of the drive unit 65 is transmitted thereto when there is no predetermined load. The gear 82 rotates in the first rotation direction R1 when the reverse rotation power of the drive unit 65 is transmitted thereto when there is no predetermined load. Each of the gears 81 to 83 does not rotate when a load equal to or greater than a predetermined load is applied.

[0095] When no predetermined load is applied, the rack 84 receives the forward rotational force of the drive unit 65, and moves in parallel toward the front Y1 when the gear 83 rotates in the first rotational direction R1. When no predetermined load is applied, the rack 84 receives the reverse rotational force of the drive unit 65, and moves in parallel toward the rear Y2 when the gear 83 rotates in the second rotational direction R2. When a load equal to or greater than the predetermined load is applied, the rack 84 does not move in parallel.

[0096] In this way, the torque limiter 80 transmits power from the drive unit 65 to the displacement unit 86 when the specified load is not applied, but does not transmit power from the drive unit 65 to the displacement unit 86 when the specified load or more is applied.

[0097] <Configuration of displacement portion 86> As shown in FIGS. 5, 8 and 9, the medium feeding device 60 includes a displacement section 86. The displacement section 86 is housed in a unit housing 87. The displacement section 86 is configured integrally with the rack 84. The displacement section 86 is provided on the rear Y2 side of the rack 84 and on the first width direction X1 side of the rack 84. The displacement section 86 may be a protrusion that protrudes upward Z1. In this manner, the displacement section 86 is provided on the rack 84.

[0098] The displacement unit 86 is displaceable between a first position P11 and a second position P12. In particular, the displacement unit 86 is displaceable between the first position P11 and the second position P12 by translation of the rack 84. The displacement unit 86 is displaceable between the first position P11 and the second position P12 by power from the drive unit 65.

[0099] 8, the first position P11 is a position where the displacement portion 86 does not come into contact with the arm portion 64. More specifically, the first position P11 is a position where the displacement portion 86 does not come into contact with an inclined surface 64D provided on the arm portion 64. The first position P11 is a position where the displacement portion 86 is disposed on the front Y1 side of the lower portion Z2 of the inclined surface 64D.

[0100] The arm portion 64 has an inclined surface 64D. The inclined surface 64D is provided on the second width direction X2 side of the arm portion 64. When the displacement portion 86 does not abut against the inclined surface 64D, the arm portion 64 rotates around the drive shaft 62 due to its own weight such that the tip portion 64B faces downward Z2. This causes the feed roller 63 to abut against the medium placed on the medium placement portion 54. In other words, the first position P11 is a position where the feed roller 63 is displaced to the abutment position due to non-abutment with the arm portion 64.

[0101] The displacement unit 86 is displaced from the second position P12 to the first position P11 by the rack 84 moving in parallel forward Y1 by the forward rotation force from the drive unit 65. In other words, the displacement unit 86 displaces the feed roller 63 to the contact position by the forward rotation force from the drive unit 65.

[0102] 9, the second position P12 is a position where the displacement portion 86 abuts against the arm portion 64. More specifically, the second position P12 is a position where the displacement portion 86 abuts against the inclined surface 64D from the downward direction Z2. The second position P12 is a position where the displacement portion 86 is disposed below the inclined surface 64D, Z2. In this way, the displacement portion 86 supports the arm portion 64 from the downward direction Z2 at the second position P12.

[0103] When the displacement portion 86 abuts against the inclined surface 64D, the arm portion 64 rotates about the drive shaft 62 such that the tip portion 64B faces upward Z1 against the weight of the arm portion 64. As a result, the feed roller 63 is separated from the medium placed on the medium placement portion 54 and does not abut against the medium placed on the medium placement portion 54. In other words, the second position P12 is a position where the feed roller 63 is displaced to the separated position by abutment with the arm portion 64.

[0104] The displacement unit 86 is displaced from the first position P11 to the second position P12 by the rack 84 moving in parallel backward Y2 by the reverse force from the drive unit 65. In other words, the displacement unit 86 displaces the feed roller 63 to the separated position by the reverse force from the drive unit 65.

[0105] In this manner, the displacement portion 86 is capable of coming into contact with the arm portion 64, and rotates the arm portion 64 by the forward rotation force from the drive portion 65. As a result, the arm portion 64 displaces the feed roller 63 between the contact position and the separated position.

[0106] In particular, the displacement unit 86 rotates the arm unit 64 so as to displace the feed roller 63 from the separated position to the abutment position by the forward rotation power from the drive unit 65. The displacement unit 86 rotates the arm unit 64 so as to displace the feed roller 63 from the abutment position to the separated position by the reverse rotation power from the drive unit 65. That is, the displacement unit 86 displaces the feed roller 63 between the abutment position and the separated position by displacing between the first position P11 and the second position P12. Also, when the displacement unit 86 displaces from the second position P12 to the first position P11, depending on the medium placed on the medium placement unit 54, the feed roller 63 may abut against the medium before being placed at the first position P11.

[0107] 8 and 9, when the displacement portion 86 is disposed at the first position P11, the rack 84 is located at the most forward Y1 side. When the displacement portion 86 is disposed at the first position P11, the rack 84 is located at the rear Y2 of the drive shaft 62 and does not protrude forward Y1 of the drive shaft 62.

[0108] The direction in which the displacement portion 86 is displaced from the second position P12 to the first position P11 is the same as the direction along the pull-out direction in which the medium loading portion 54 is pulled out, but it does not have to be strictly the same as the direction along the pull-out direction, and may be a direction that includes a component in the same direction as the direction along the pull-out direction.

[0109] <Displacement of rack 84> As shown in FIG. 10, the medium feeding device 60 includes a first regulating portion 85. The first regulating portion 85 is housed in a unit housing 87. The first regulating portion 85 is configured integrally with the rack 84. The first regulating portion 85 is provided on the rear Y2 side of the rack 84. The first regulating portion 85 may be a protruding portion that protrudes upward Z1. The first regulating portion 85 may be a protruding portion that protrudes upward Z1 beyond the rack 84. The first regulating portion 85 applies a load of a predetermined load or more to the gear 83 in a state of meshing with the gear 83. As a result, the first regulating portion 85 regulates the displacement of the rack 84 to the front Y1 when the rack 84 is arranged so that the displacement portion 86 is at the first position P11.

[0110] In this way, when the displacement portion 86 is displaced from the second position P12 to the first position P11, the first regulating portion 85 regulates the displacement of the displacement portion 86 at the first position P11. In this case, when the displacement of the displacement portion 86 is regulated by the first regulating portion 85 at the first position P11, the torque limiter 80 cuts off the transmission of power to the displacement portion 86 under a predetermined load.

[0111] The unit housing 87 includes a first guide portion 87A. The first guide portion 87A is provided further in the second width direction X2 than the rack 84. The first guide portion 87A is a protruding portion that protrudes upward Z1. The first guide portion 87A extends along the front-rear direction Y. The first guide portion 87A guides the displacement of the rack 84 in the front-rear direction Y on the second width direction X2 side of the rack 84.

[0112] The unit housing 87 includes a second guide portion 87B. The second guide portion 87B is provided further in the first width direction X1 than the rack 84. The second guide portion 87B is a protruding portion that protrudes upward Z1. The second guide portion 87B extends along the front-rear direction Y. The second guide portion 87B guides the displacement of the rack 84 in the front-rear direction Y on the first width direction X1 side of the rack 84.

[0113] The unit housing 87 has a notch 87C. The notch 87C is provided rearward Y2 from the second guide portion 87B. The notch 87C constitutes a part of the movement area of ​​the displacement portion 86. The notch 87C constitutes a part of the movement area of ​​the inclined surface 64D. The notch 87C constitutes a space in which the displacement portion 86 can abut against the inclined surface 64D.

[0114] The unit housing 87 includes a second regulating portion 87D. That is, the medium feeding device 60 includes the second regulating portion 87D. The second regulating portion 87D is provided on the rear Y2 side of the first guide portion 87A. The second regulating portion 87D may be a protruding portion that protrudes upward Z1. The second regulating portion 87D abuts against the first regulating portion 85 due to the displacement of the rack 84 toward the rear Y2. The second regulating portion 87D abuts against the first regulating portion 85, thereby applying a load of a predetermined load or more to the gear 83. As a result, the first regulating portion 85 regulates the displacement of the rack 84 toward the rear Y2 when the rack 84 is arranged so that the displacement portion 86 is at the second position P12.

[0115] In this way, when the displacement portion 86 displaces from the first position P11 to the second position P12, the second regulating portion 87D regulates the displacement of the displacement portion 86 at the second position P12. In this case, when the displacement of the displacement portion 86 is regulated by the second regulating portion 87D at the second position P12, the torque limiter 80 cuts off the transmission of power to the displacement portion 86 due to a predetermined load. The first regulating portion 85 and the second regulating portion 87D correspond to an example of a regulating portion.

[0116] The rack 84 is provided at a position that takes into consideration the inclination angle of the arm unit 64. The rack 84 is placed at a height Z1 above the height that takes into consideration the height of the media when the maximum number of media is placed on the media placement unit 54 and the gap Z1 above the media.

[0117] The arm unit 64 needs to rotate at an inclination angle that allows the media placed on the medium placement unit 54 to come into contact with the feed roller 63. For this reason, the arm unit 64 needs to be able to rotate at an inclination angle that corresponds to the media placed on the medium placement unit 54. To give a specific example, the arm unit 64 needs to rotate at an inclination angle that allows the media to come into contact with the feed roller 63 both when the number of media placed on the medium placement unit 54 is the minimum and when the number of media is the maximum.

[0118] The moment in the downward direction Z2 of the arm portion 64 is larger at a position farther from the drive shaft 62 supported by the arm portion 64 than at a position closer to the drive shaft 62. For this reason, it is preferable that the rack 84 is located farther from the drive shaft 62. Thus, the rack 84 is disposed farther from the drive shaft 62, provided that the conditions for the height of the rack 84 and the inclination angle of the arm portion 64 are satisfied.

[0119] Further, a predetermined load of the torque limiter 80 is determined so that the rack 84 can be displaced from the first position P11 to the second position P12 against the weight of the arm portion 64 and the biasing force applied to the arm portion 64 in the downward direction Z2.

[0120] <Contact Processing> The contact process will now be described with reference to Fig. 11. The contact process is executed by the control unit 23 at predetermined intervals.

[0121] As shown in FIG. 11, in step S10, the control unit 23 determines whether or not a job is to start based on an instruction from a user. The job is a process of recording on a medium. The job may be a process of recording on one or more sheets of media. If the control unit 23 determines that the job is not to start, it does not execute steps S11 and S12 and ends the contact process. If the control unit 23 determines that the job is to start, it transitions to step S11.

[0122] In step S11, the control unit 23 determines whether the displacement unit 86 is at the second position P12. That is, the control unit 23 determines whether the feed roller 63 is at the separated position. The control unit 23 determines whether the displacement unit 86 is at the second position P12 based on the position information assigned to the memory. The position information is information indicating the position of the displacement unit 86. The position information is stored in the memory by the control unit 23 in association with the displacement of the displacement unit 86. When the control unit 23 determines that the displacement unit 86 is not at the second position P12, the control unit 23 ends the contact process without executing step S12. That is, when the control unit 23 determines that the displacement unit 86 is at the first position P11, the control unit 23 ends the contact process without executing step S12. When the control unit 23 determines that the displacement unit 86 is at the second position P12, the control unit 23 shifts the process to step S12.

[0123] In step S12, the control unit 23 executes a first position displacement process. In the first position displacement process, the control unit 23 drives the drive unit 65 in the forward direction. As a result, the displacement unit 86 is displaced from the second position P12 to the first position P11. The feed roller 63 is displaced from the separated position to the contact position. In this manner, the control unit 23 displaces the displacement unit 86 to the second position P12 when a job for recording on a medium starts. Then, the control unit 23 stores position information indicating the first position P11 in the memory. When the first position displacement process ends, the control unit 23 ends the contact process.

[0124] After the contact process is completed, the control unit 23 continues to drive the drive unit 65 in the forward direction to execute the feeding process. Therefore, the time required to execute the feeding process differs between when the displacement unit 86 is at the first position P11 and when the displacement unit 86 is displaced from the second position P12 to the first position P11. In detail, the time required to execute the feeding process is longer when the displacement unit 86 is displaced from the second position P12 to the first position P11 than when the displacement unit 86 is at the first position P11. The contact process and the feeding process may not be clearly distinguished from each other during control, and may be executed continuously as one process.

[0125] <First separation process> Next, the first separation process will be described with reference to Fig. 12. The first separation process is a process executed by the control unit 23 at predetermined intervals.

[0126] 12, in step S20, the control unit 23 determines whether the job is completed. If the control unit 23 determines that the job is not completed, the control unit 23 ends the first separation process without executing steps S21 to S24. If the control unit 23 determines that the job is completed, the control unit 23 moves the process to step S21.

[0127] In step S21, the control unit 23 determines whether the displacement unit 86 is at the first position P11. That is, the control unit 23 determines whether the feed roller 63 is at the contact position. The control unit 23 determines whether the displacement unit 86 is at the first position P11 based on the position information allocated to the memory. When the control unit 23 determines that the displacement unit 86 is not at the first position P11, the control unit 23 ends the first separation process without executing steps S22 to S24. That is, when the control unit 23 determines that the displacement unit 86 is at the second position P12, the control unit 23 ends the first separation process without executing steps S22 to S24. When the control unit 23 determines that the displacement unit 86 is at the first position P11, the control unit 23 shifts the process to step S22.

[0128] In step S22, the control unit 23 determines whether there is a next job. That is, the control unit 23 determines whether there is a next job after the end of the job. If the control unit 23 determines that there is a next job, it ends the first separation process without executing steps S23 and S24. If the control unit 23 determines that there is no next job, it transitions to step S23.

[0129] In step S23, the control unit 23 determines whether a predetermined time has elapsed. The control unit 23 measures the time that has elapsed since it was determined that the job was completed. The control unit 23 determines whether the predetermined time has elapsed based on whether the time that has elapsed since it was determined that the job was completed reaches the predetermined time. If the control unit 23 determines that the predetermined time has not elapsed, it shifts the process to step S22 again. If the control unit 23 determines that the predetermined time has elapsed, it shifts the process to step S24. In this way, if the control unit 23 determines that there was a next job before the predetermined time elapsed after the job was completed, it does not execute step S24 and ends the first separation process. If the control unit 23 determines that there is no next job for a predetermined time after the job is completed, it shifts the process to step S24.

[0130] In step S24, the control unit 23 executes a second position displacement process. In the second position displacement process, the control unit 23 drives the drive unit 65 in the reverse direction. As a result, the displacement unit 86 displaces from the first position P11 to the second position P12. In this manner, the control unit 23 displaces the displacement unit 86 to the second position P12 when there is no next job for a predetermined time after the end of a job of recording on a medium. The feed roller 63 displaces from the contact position to the separated position. Then, the control unit 23 stores position information indicating the second position P12 in the memory. When the second position displacement process is completed, the control unit 23 ends the first separation process.

[0131] <Second separation process> Next, the second separation process will be described with reference to Fig. 13. The second separation process is a process executed by the control unit 23 at predetermined intervals.

[0132] As shown in Fig. 13, in step S30, the control unit 23 determines whether or not the power will be turned off. The power may be turned off by a user instruction, or may be turned off by a power interruption. In this case, the second separation process may be executed based on a backup power source. If the control unit 23 determines that the power will not be turned off, it ends the second separation process without executing steps S31 and S32. If the control unit 23 determines that the power will be turned off, it transitions to step S31.

[0133] In step S31, the control unit 23 determines whether or not the displacement unit 86 is at the first position P11, similarly to step S21. If the control unit 23 determines that the displacement unit 86 is not at the first position P11, the control unit 23 ends the second separation process without executing step S32. In other words, if the control unit 23 determines that the displacement unit 86 is at the second position P12, the control unit 23 ends the second separation process without executing step S32. If the control unit 23 determines that the displacement unit 86 is at the first position P11, the control unit 23 shifts the process to step S32.

[0134] In step S32, the control unit 23 executes the second position displacement process in the same manner as in step S24. In the second position displacement process, the control unit 23 drives the drive unit 65 in the reverse direction. As a result, the displacement unit 86 is displaced from the first position P11 to the second position P12. In this manner, the control unit 23 displaces the displacement unit 86 to the second position P12 when turning off the power. The feed roller 63 is displaced from the contact position to the separated position. Then, the control unit 23 stores position information indicating the second position P12 in the memory. When the second position displacement process is completed, the control unit 23 ends the second separation process.

[0135] <Media feed monitoring process> Next, the medium feeding monitoring process will be described with reference to Fig. 14. The medium feeding monitoring process is a process executed by the control unit 23 at predetermined intervals.

[0136] 14, in step S40, the control unit 23 determines whether or not feeding of the medium is started by the feeding roller 63. If the control unit 23 determines that feeding of the medium is not started, it does not execute steps S41 to S44 and ends the medium feeding monitoring process. If the control unit 23 determines that feeding of the medium is started, it transitions to step S41.

[0137] In step S41, the control unit 23 determines whether the displacement unit 86 is at the first position P11, similarly to steps S21 and S31. When the control unit 23 determines that the displacement unit 86 is at the first position P11, the control unit 23 shifts the process to step S42. That is, the control unit 23 shifts the process to step S42 when the displacement unit 86 is already at the first position P11, both in the case where a job is started and in the case where a job is not started. When the control unit 23 determines that the displacement unit 86 is not at the first position P11, the control unit 23 shifts the process to step S43. That is, the control unit 23 shifts the process to step S43 when the displacement unit 86 is at the second position P12 in the case where a job is started.

[0138] In step S42, the control unit 23 determines whether or not the leading edge of the medium is not detected based on the detection result from the medium detection unit 59 until the first time has elapsed since the drive unit 65 was driven in the forward rotation. The first time is the reference time for determining a feeding error. The reference time for determining a feeding error is a time starting from the forward driving of the drive unit 65. If the control unit 23 determines that the leading edge of the medium is detected until the first time has elapsed since the drive unit 65 was driven in the forward rotation, the control unit 23 does not execute step S44 and ends the medium feeding monitoring process. If the control unit 23 determines that the leading edge of the medium is not detected until the first time has elapsed since the drive unit 65 was driven in the forward rotation, the control unit 23 moves the process to step S44.

[0139] In step S43, the control unit 23 judges whether or not the leading edge of the medium is not detected based on the detection result from the medium detection unit 59 until the second time has elapsed since the drive unit 65 was driven in the forward direction. The second time is a reference time for judging a feeding error. The second time is longer than the first time. The second time is longer than the first time by an estimated time for displacing the displacement unit 86 from the second position P12 to the first position P11. If the control unit 23 judges that the leading edge of the medium is detected until the second time has elapsed since the drive unit 65 was driven in the forward direction, the control unit 23 does not execute step S44 and ends the medium feeding monitoring process. If the control unit 23 judges that the leading edge of the medium is not detected until the second time has elapsed since the drive unit 65 was driven in the forward direction, the control unit 23 shifts the process to step S44.

[0140] In step S44, the control unit 23 executes a feeding error determination process. In the feeding error determination process, the control unit 23 determines that a feeding error has occurred. In this case, the control unit 23 causes the display unit 35 to display an image indicating the occurrence of a feeding error. The control unit 23 may end the feeding process. When the feeding error determination process is ended, the control unit 23 ends the medium feeding monitoring process.

[0141] In this way, when the displacement unit 86 is at the first position P11, if the leading edge of the medium is not detected by the medium detection unit 59 even after the first time has elapsed since the drive unit 65 started to drive to feed the medium, the control unit 23 determines that a feeding error has occurred. When the displacement unit 86 is at the second position P12, if the leading edge of the medium is not detected by the medium detection unit 59 even after the second time, which is longer than the first time, has elapsed since the drive unit 65 started to drive to feed the medium, the control unit 23 determines that a feeding error has occurred.

[0142] When the control unit 23 determines that the displacement unit 86 is already at the first position P11, it starts feeding the medium without the time required for displacing the displacement unit 86 from the second position P12 to the first position P11. When the control unit 23 determines in step S41 that the displacement unit 86 is at the second position P12, it starts feeding the medium after the time required for displacing the displacement unit 86 from the second position P12 to the first position P11 has elapsed. As a result, the reference time for determining a feeding error, starting from the forward rotation of the drive unit 65, is longer when it is determined that the displacement unit 86 is at the second position P12 than when it is determined that the displacement unit 86 is already at the first position P11.

[0143] <Control process when attaching / detaching> Next, the attachment / detachment control process will be described with reference to Fig. 15. The attachment / detachment control process is a process executed by the control unit 23 at predetermined intervals.

[0144] As shown in Fig. 15, in step S50, the control unit 23 determines whether or not a user has issued an attachment / detachment instruction. The attachment / detachment instruction is issued in response to an operation of the operation unit 34. If the control unit 23 determines that there has been no attachment / detachment instruction, it does not execute steps S51 and S52 and ends the attachment / detachment control process. If the control unit 23 determines that there has been an attachment / detachment instruction, it transitions to step S51.

[0145] In step S51, the control unit 23 determines whether the displacement unit 86 is in the second position P12, similarly to step S11. If the control unit 23 determines that the displacement unit 86 is not in the second position P12, it does not execute step S52 and ends the attachment / detachment control process. If the control unit 23 determines that the displacement unit 86 is in the second position P12, it shifts the process to step S52.

[0146] In step S52, the control unit 23 executes the first position displacement process in the same manner as in step S12. In the first position displacement process, the control unit 23 drives the drive unit 65 in the forward direction. As a result, the displacement unit 86 is displaced from the second position P12 to the first position P11. In this manner, when the displacement unit 86 is in the second position P12, the control unit 23 displaces the displacement unit 86 from the second position P12 to the first position P11 when attaching or detaching the arm unit 64 to or from the drive shaft 62. The feed roller 63 is displaced from the separated position to the abutting position. Then, the control unit 23 stores position information indicating the first position P11 in the memory. When the first position displacement process is completed, the control unit 23 ends the attachment / detachment control process.

[0147] <Actions and Effects of the First Embodiment> The operation and effects of the first embodiment will be described. (1-1) The feed roller 63 feeds the medium placed on the medium placement unit 54 by the forward rotation power from the drive unit 65. The arm unit 64 displaces the feed roller 63 between a contact position where the feed roller 63 contacts the medium placed on the medium placement unit 54 and a separation position where the feed roller 63 is separated from the medium placed on the medium placement unit 54. The displacement unit 86 rotates the arm unit 64 by the forward rotation power from the drive unit 65 so as to displace the feed roller 63 from the separation position to the abutment position. The displacement unit 86 rotates the arm unit 64 by the reverse rotation power from the drive unit 65 so as to displace the feed roller 63 from the contact position to the separation position. According to this configuration, the feed roller 63 can be driven and the displacement unit 86 that displaces the arm unit 64 that supports the feed roller 63 can be realized by the power from the common drive unit 65. Therefore, it is possible to suppress bleed marks caused by the feed roller 63 and to suppress an increase in size of the device.

[0148] (1-2) The displacement unit 86 is displaceable between a first position P11 and a second position P12. The first position P11 is a position where the feed roller 63 is displaced to the contact position by not contacting the arm unit 64. The second position P12 is a position where the feed roller 63 is displaced to the separation position by contacting the arm unit 64. With this configuration, the feed roller 63 can be displaced to the contact position and the separation position by power from the common drive unit 65 with a simple configuration that switches between contact and non-contact between the displacement unit 86 and the arm unit 64. Therefore, it is possible to suppress bleed marks caused by the feed roller 63 and to suppress an increase in size of the device.

[0149] (1-3) The displacement unit 86 supports the arm unit 64 from the downward Z2 at the second position P12. With this configuration, the feed roller 63 can be displaced to the contact position and the separated position by power from the common drive unit 65 with a simple configuration that switches whether or not the displacement unit 86 and the arm unit 64 are supported from the downward Z2. Therefore, it is possible to suppress bleed marks caused by the feed roller 63 and to suppress an increase in size of the device.

[0150] (1-4) The displacement unit 86 is provided on the translationally movable rack 84. With this configuration, the displacement unit 86 is provided on the translationally movable rack 84, and the feed roller 63 can be displaced to the contact position and the separation position by power from the common drive unit 65. Therefore, it is possible to suppress bleeding marks caused by the feed roller 63 and to suppress an increase in the size of the device.

[0151] (1-5) The rack 84 is movable in the front-rear direction Y, and when the displacement portion 86 is disposed at the first position P11, the rack 84 is located rearward Y2 toward the feed roller 63 than the drive shaft 62, and does not protrude forward Y1 than the drive shaft 62. With this configuration, the rack 84 can be located rearward Y2 toward the feed roller 63 than the drive shaft 62. This makes it possible to prevent the displacement of the arm portion 64 from interfering with the drive shaft 62, even when the arm portion 64 and the rack 84 are at the furthest position from each other.

[0152] (1-6) The feed roller 63 feeds the medium placed on the medium placement unit 54 by the forward rotation power from the drive unit 65. The displacement unit 86 displaces the feed roller 63 to the abutting position by the forward rotation power from the drive unit 65, and displaces the feed roller 63 to the separated position by the reverse rotation power from the drive unit 65. The power transmission unit 66 includes a gear 77 that is a one-way clutch that transmits the forward rotation power from the drive unit 65 to the feed roller 63 but does not transmit the reverse rotation power from the drive unit 65 to the feed roller 63. According to this configuration, the displacement unit 86 can displace the feed roller 63 to the separated position by the reverse rotation power from the drive unit 65 without the gear 77 transmitting the reverse rotation power to the feed roller 63. This allows the feed roller 63 to be displaced to the separated position without rotating the feed roller 63. Therefore, it is possible to suppress bleed marks caused by the feed roller 63, and to improve the alignment of the medium in contact with the feed roller 63.

[0153] (1-7) The displacement portion 86 is displaceable between a first position P11 and a second position P12. The first position P11 is a position where the feed roller 63 is displaced to a contact position, and the second position P12 is a position where the feed roller 63 is displaced to a separation position. The first regulating portion 85 regulates the displacement of the displacement portion 86 at the first position P11 when the displacement portion 86 is displaced from the second position P12 to the first position P11. The second regulating portion 87D regulates the displacement of the displacement portion 86 at the second position P12 when the displacement portion 86 is displaced from the first position P11 to the second position P12. The second power transmission portion 69 includes a torque limiter 80 that transmits power from the drive portion 65 to the displacement portion 86 and cuts off the transmission of power under a predetermined load. When the displacement of the displacement portion 86 is restricted by the first restricting portion 85 at the first position P11, the torque limiter 80 cuts off the transmission of power to the displacement portion 86. When the displacement of the displacement portion 86 is restricted by the second restricting portion 87D at the second position P12, the torque limiter 80 cuts off the transmission of power to the displacement portion 86. According to this configuration, when the displacement of the displacement portion 86 is restricted by the first restricting portion 85 at the first position P11, a load of a predetermined load or more is applied to the torque limiter 80, causing the torque limiter 80 to cut off the transmission of power to the displacement portion 86. When the displacement of the displacement portion 86 is restricted by the second restricting portion 87D at the second position P12, a load of a predetermined load or more is applied to the torque limiter 80, causing the torque limiter 80 to cut off the transmission of power to the displacement portion 86. In this manner, by providing the torque limiter 80, the load on the drive unit 65 when the feed roller 63 is driven can be suppressed.

[0154] In particular, by providing the torque limiter 80 in the second power transmission section 69 that is different from the power transmission path to the feed roller 63, the torque limiter 80 can be provided further upstream. This makes it possible to reduce the load on the drive section 65 when driving the feed roller 63, and also shorten the power transmission path between the torque limiter 80 and the displacement section 86. Furthermore, even if a detection section that detects that the displacement section 86 has been displaced to the second position P12 is not provided, the displacement section 86 can be displaced to the second position P12 with high accuracy. This makes it possible to improve the alignment of the medium in contact with the feed roller 63.

[0155] (1-8) The torque limiter 80 is provided coaxially with the drive shaft 62. With this configuration, the arm portion 64 can be made lighter than in a configuration in which the torque limiter 80 is provided on the arm portion. This makes it possible to suppress the effect on the conveying force of the feed roller 63 supported by the arm portion 64. Also, compared to a configuration in which the torque limiter 80 is provided upstream of the drive shaft 62, it is possible to suppress an increase in the size of the device.

[0156] (1-9) The arm portion 64 supports the feed roller 63 so that it can swing. With this configuration, it is possible to suppress vibration of the feed roller 63. In particular, in the past, when the feed roller and the displacement portion were directly linked to each other, it was not easy to support the feed roller so that it could swing. Therefore, by providing the torque limiter 80 to the second power transmission portion 69 that is different from the feed roller 63, it becomes possible to support the feed roller 63 so that it can swing.

[0157] (1-10) The arm unit 64 is rotatable to change the distance between the feed roller 63 and the medium loading unit 54. According to this configuration, the arm unit 64 rotates to change the distance between the feed roller 63 and the media loaded on the medium loading unit 54. Therefore, by rotating the arm unit 64 according to the thickness and number of media loaded on the medium loading unit 54, it is possible to provide variety to the media loaded on the medium loading unit 54. This can improve user convenience.

[0158] (1-11) The drive shaft 62 rotatably supports the arm portion 64, and the arm portion 64 is detachable from the drive shaft 62. With this configuration, the feed roller 63 can be easily replaced by removing the arm portion 64 from the drive shaft 62. In particular, when the displacement portion 86 and the power transmission portion 66 are housed in the arm portion 64, the displacement portion 86 and the power transmission portion 66 can also be easily replaced together with the feed roller 63. In other words, the configuration for driving the feed roller 63 and the configuration for displacing the displacement portion 86 can be easily replaced.

[0159] (1-12) The arm retraction section 30 retracts the arm section 64 to the retracted position when the medium placement section 54 is pulled out in the pull-out direction. According to this configuration, it is possible to prevent the medium placement section 54 from interfering with the arm section 64 when the medium placement section 54 is pulled out.

[0160] (1-13) The reversing unit 58 reverses the medium fed by the medium feeding device 60. The recording unit 48 can record on photo paper that can be printed on both sides as a medium, and can record after the medium is reversed by the reversing unit 58. With this configuration, bleeding marks caused by the feeding roller 63 can be suppressed on photo paper that can be printed on both sides. This can provide an even more special effect. Specifically, general photo paper is often printed on only one side. In this case, the surface that the feeding roller 63 contacts is the opposite side to the surface to be recorded, and bleeding marks are less likely to be a problem. However, in the case of photo paper that is printed on both sides, recording is also performed on the surface that the feeding roller 63 contacts. Therefore, it is possible to provide an even more special effect. Furthermore, printing on photo paper may place more importance on print quality than printing on general paper. Therefore, by suppressing bleeding marks, it is possible to provide an even more special effect. Note that photo paper is paper that is primarily intended for printing photographs and is suitable for printing photographs. Capable of recording on photo paper means that the recording device 11 is capable of printing on paper suitable for printing photographs as described above.

[0161] (1-14) The control unit 23 displaces the displacement unit 86 to the second position P12 when there is no next job for a predetermined time after the end of a job to record on a medium and when the power is turned off. With this configuration, the feed roller 63 can be displaced to the separated position when there is no next job for a predetermined time after the end of a job and when the power is turned off. Thereby, by displacing the feed roller 63 to the separated position at an appropriate timing, it is possible to suppress bleed marks caused by the feed roller 63.

[0162] (1-15) When the displacement unit 86 is at the first position P11, if the leading edge of the medium is not detected by the medium detection unit 59 even after a first time has elapsed since the drive unit 65 starts to rotate forward to feed the medium, the control unit 23 determines that a feeding error has occurred. When the displacement unit 86 is at the second position P12, if the leading edge of the medium is not detected by the medium detection unit 59 even after a second time, which is longer than the first time, has elapsed since the drive unit 65 starts to rotate forward to feed the medium, the control unit 23 determines that a feeding error has occurred. According to this configuration, when the medium is fed by the feed roller 63, the feed roller 63 comes into contact with the medium after a time that it takes for the displacement unit 86 to be displaced from the second position P12 to the first position P11 when the displacement unit 86 is at the second position P12 rather than when the displacement unit 86 is at the first position P11. Therefore, when a medium is fed by the feed roller 63, the accuracy of determining a feed error can be improved by making the time used as the standard for determining a feed error longer when the displacement portion 86 is at the second position P12 than when it is at the first position P11.

[0163] (1-16) When the displacement portion 86 is in the second position P12, the control portion 23 can displace the displacement portion 86 from the second position P12 to the first position P11 when attaching or detaching the arm portion 64 to or from the drive shaft 62. According to this configuration, by displacing the displacement portion 86 from the second position P12 to the first position P11, interference between the displacement portion 86 and the arm portion 64 can be suppressed. This makes it easier to attach or detach the arm portion 64 to or from the drive shaft 62. This improves user convenience.

[0164] (1-17) The main body 21 is configured to be held at a predetermined position relative to the housing 20. The predetermined positions include a closed position, a first open position, and a second open position. The closed position is a position where the main body 21 is accommodated in the housing 20. The first open position is a position where the main body 21 protrudes from the housing 20 by a first distance D1 toward the front Y1. The second open position is a position where the main body 21 protrudes from the housing 20 by a second distance D2, which is longer than the first distance D1, toward the front Y1. The main body 21 is displaceable between the closed position, the first open position, and the second open position along the front-rear direction Y. Therefore, the main body 21 can be displaced between the closed position, the first open position, and the second open position along the front-rear direction Y, and the main body 21 can be held at the closed position, the first open position, and the second open position relative to the housing 20. Therefore, it is possible to select the type of open position that can be held, and the workability regarding the displacement of the main body 21 and the holding of the main body 21 can be improved.

[0165] (1-18) The liquid inlet 42 is exposed when the main body 21 is disposed in the open position. Therefore, the liquid inlet 42 mounted on the main body 21 can be exposed by displacing the main body 21 from the closed position to the open position along the front-rear direction Y. In this way, by displacing the main body 21 from the closed position to the open position along the front-rear direction Y, liquid can be injected into the liquid inlet 42, improving operability.

[0166] (1-19) The waste liquid mounting part 45 is mounted on the main body 21, and is exposed when the main body 21 is disposed in the open position. Therefore, the waste liquid mounting part 45 mounted on the main body 21 can be exposed by displacing the main body 21 from the closed position to the open position along the front-rear direction Y. In this manner, by displacing the main body 21 from the closed position to the open position along the front-rear direction Y, the waste liquid container 46 can be attached and detached from the waste liquid mounting part 45, and the workability related to the waste liquid mounting part 45 can be improved.

[0167] (1-20) At least a portion of the transport path 49 is exposed when the main body 21 is disposed in the second open position. Therefore, by displacing the main body 21 from the closed position to the second open position along the front-rear direction Y, at least a portion of the transport path 49 mounted on the main body 21 can be exposed. In this manner, by displacing the main body 21 from the closed position to the second open position along the front-rear direction Y, media can be removed in at least a portion of the transport path 49, improving workability.

[0168] [Second embodiment] Next, a second embodiment will be described. In the following description, the same configuration as in the embodiment already described will be omitted or simplified, and the configuration different from the embodiment already described will be mainly described.

[0169] <First separation process> 16, in the first separation process, if the control unit 23 determines in step S22 that there is a next job, it ends the first separation process without executing step S24. If the control unit 23 determines that there is no next job, it shifts the process to step S24. In this way, the control unit 23 displaces the displacement unit 86 to the second position P12 when there is no next job after the job of recording on the medium is finished.

[0170] <Effects of the second embodiment> The effects of the second embodiment will be described. (2-1) When there is no next job after the end of a job of recording on a medium, the control unit 23 displaces the displacement unit 86 to the second position P12. According to this configuration, by displacing the feed roller 63 to the separated position at an appropriate timing, it is possible to suppress bleed marks caused by the feed roller 63.

[0171] [Third embodiment] Next, a third embodiment will be described. <Pressed portion 88 and pressing portion 89> 17 and 18, in the third embodiment, the displacement unit 67 includes a pressed portion 88. The pressed portion 88 is configured integrally with the rack 84. The pressed portion 88 is provided on the rear Y2 side of the rack 84 and on the second width direction X2 side of the rack 84. The pressed portion 88 may be a protrusion that protrudes upward Z1.

[0172] The pressed portion 88 has a first surface 88A and a second surface 88B. The first surface 88A is a surface that is continuous with the second surface 88B in the front-rear direction Y. The first surface 88A is located rearward Y2 from the second surface 88B. The first surface 88A is a surface that is perpendicular to the width direction X. The second surface 88B is a surface that is inclined with respect to the width direction X. In detail, the second surface 88B is a surface that is inclined toward the first width direction X1 as it moves forward Y1.

[0173] The displacement unit 67 includes a pressing portion 89. The pressing portion 89 is housed in a unit housing 87. The pressing portion 89 is provided on the second width direction X2 side of the rack 84. When the rack 84 is disposed at the first position P11, the pressing portion 89 can press the pressed portion 88 in the first width direction X1.

[0174] The pressing portion 89 includes a protruding portion 89A and a biasing portion 89B. The protruding portion 89A is housed in the unit housing 87. The protruding portion 89A protrudes from the first guide portion 87A in the first width direction X1. The biasing portion 89B is housed in the unit housing 87. The biasing portion 89B biases the protruding portion 89A in the first width direction X1.

[0175] 17, when the rack 84 is disposed at the first position P11, the pressed portion 88 is located further in the first width direction X1 than the pressing portion 89. That is, the pressed portion 88 is disposed at a position facing the pressing portion 89 in the width direction X. The pressed portion 88 abuts against the pressing portion 89 in the width direction X. More specifically, the protruding portion 89A abuts against the first surface 88A in the width direction X.

[0176] In this case, the pressed portion 88 displaces the protruding portion 89A in the second width direction X2 against the biasing force of the biasing portion 89B. That is, the pressing portion 89 presses the pressed portion 88 in the first width direction X1 by the biasing force of the biasing portion 89B. As a result, when the rack 84 is disposed at the first position P11, it is pressed against the second guide portion 87B.

[0177] In addition, the friction coefficient between the rack 84 and the unit housing 87 and the biasing force by the biasing part 89B are determined so that the cumulative load from the drive part 65 to the rack 84 is smaller than the reverse force by the drive part 65 when the rack 84 is disposed at the first position P11. As a result, when the feed roller unit 61 is attached to the drive shaft 62 and the rack 84 is disposed at the first position P11, the rack 84 moves backward Y2 against the pressure from the pressing part 89 in response to the reverse force from the drive part 65. In this way, as the rack 84 moves backward Y2, the protruding part 89A goes from a state in which it abuts against the first surface 88A in the width direction X to a state in which it abuts against the second surface 88B in the width direction X, and then goes into a state in which it does not abut against the pressed part 88.

[0178] 18, when the rack 84 is disposed at the second position P12, the pressed portion 88 is located rearward Y2 from the first width direction X1 of the pressing portion 89. In other words, the pressed portion 88 is disposed at a position not facing the pressing portion 89 in the width direction X. The pressed portion 88 does not abut against the pressing portion 89. In this case, the pressing portion 89 does not press the pressed portion 88. As a result, when the rack 84 is disposed at the second position P12, it is not pressed against the second guide portion 87B.

[0179] On the other hand, a removal operation may be performed with the rack 84 disposed at the first position P11. The removal operation is an operation in which the feed roller unit 61 is removed from the drive shaft 62. Even if a rotational force smaller than the accumulated load from the drive part 65 to the rack 84 is applied to the drive shaft 62 in response to the removal operation, the rack 84 is pressed against the second guide part 87B. For this reason, the drive shaft 62 does not rotate, and the rack 84 does not move in the front-rear direction Y from the first position P11.

[0180] Furthermore, an installation operation may be performed with the rack 84 disposed at the first position P11. The installation operation is an operation in which the feed roller unit 61 is installed on the drive shaft 62. Even if a rotational force smaller than the accumulated load from the drive section 65 to the rack 84 is applied to the drive shaft 62 in response to the installation operation, the rack 84 is pressed against the second guide section 87B. For this reason, the drive shaft 62 does not rotate, and the rack 84 does not move in the front-rear direction Y from the first position P11.

[0181] <Structure of arm portion 64> 19, the arm portion 64 has a recess 64E. The recess 64E is provided on the first width direction X1 side of the arm portion 64. The recess 64E is displaced according to the position of the feed roller unit 61. The recess 64E is recessed in the second width direction X2. The recess 64E constitutes an accommodation space 64F.

[0182] The medium feeding device 60 includes a frame 90. The frame 90 is configured separately from the arm portion 64. The frame 90 includes a protrusion 90A. The protrusion 90A extends toward the recess 64E. The protrusion 90A does not displace according to the position of the feed roller unit 61. The protrusion 90A can be accommodated in the accommodation space 64F. In particular, the protrusion 90A is accommodated in the accommodation space 64F if it is within the operating range of the feed roller unit 61. In this way, by handling the feed roller unit 61 so that the protrusion 90A is accommodated in the accommodation space 64F, the attachment and detachment of the feed roller unit 61 can be improved.

[0183] In particular, when the medium feeding device 60 is of the first type, the arm portion 64 is provided with a recess 64E, and the frame 90 is provided with a protrusion 90A. When the medium feeding device 60 is of the second type, the arm portion 64 is not provided with a recess 64E, and the frame 90 is not provided with a protrusion 90A.

[0184] Therefore, when the first type feed roller unit 61 is attached to the first type frame 90, the protrusion 90A is accommodated in the recess 64E. On the other hand, when the second type feed roller unit 61 is attached to the first type frame 90, the recess 64E is not provided, so the protrusion 90A comes into contact with the arm portion 64. As a result, the second type feed roller unit 61 cannot be attached to the first type frame 90. With this configuration, it is possible to prevent a feed roller unit 61 of a different type from being attached to the frame 90. The arm portion 64 may have a protrusion, and the frame 90 may have a recess.

[0185] <Effects of the third embodiment> The effects of the third embodiment will be described. (3-1) The medium feeding device 60 includes a pressing portion 89 that presses the rack 84 against the second guide portion 87B when the rack 84 is disposed at the first position P11. With this configuration, even if a rotational force is applied to the drive shaft 62 in response to an operation of attaching or detaching the feed roller unit 61 to or from the drive shaft 62, the rack 84 is pressed against the second guide portion 87B and does not move in the front-rear direction Y from the first position P11. This can improve the ease of attachment of the feed roller unit 61. Therefore, it is possible to improve user convenience.

[0186] [Example of change] This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction.

[0187] The medium feeding device 60 is not limited to a configuration in which three gears 81-83 are used between the drive shaft 62 and the rack 84, and may use, for example, one gear or may use, for example, five gears. The medium feeding device 60 may include, for example, two or four gears between the drive shaft 62 and the rack 84, as long as the displacement portion 86 is displaced from the second position P12 to the first position P11 based on the forward rotation force and the displacement portion 86 is displaced from the first position P11 to the second position P12 based on the reverse rotation force.

[0188] The medium feeding device 60 is not limited to a configuration in which the displacement portion 86 supports the arm portion 64 from below Z2, and may be configured, for example, in such a way that the displacement portion 86 supports the arm portion 64 by pressing it from the width direction X or the front-rear direction Y.

[0189] The medium feeding device 60 is not limited to a configuration in which the displacement portion 86 is displaced using the rack 84, and may be a configuration in which the displacement portion 86 is displaced using, for example, a cam. When the displacement portion 86 is disposed at the first position P11, the displacement portion 86 may be in contact with the arm portion 64 as long as the feed roller 63 is separated from the medium.

[0190] In the first embodiment, the predetermined time may be the time from the end of a job until the device transitions to a power saving mode. The predetermined time may be changeable by a user instruction.

[0191] The control unit 23 may determine whether or not to execute the first separation process depending on conditions such as the type of medium. The recording device 11 may include a detection unit that detects a medium placed on the medium placement unit 54. In this case, when the control unit 23 determines, based on the detection result by the detection unit, that no medium is placed on the medium placement unit 54, the control unit 23 may keep the displacement unit 86 at the first position P11 without displacing the displacement unit 86 from the first position P11 to the second position P12. When the control unit 23 determines, based on the detection result by the detection unit, that a medium is placed on the medium placement unit 54, the control unit 23 may displace the displacement unit 86 from the first position P11 to the second position P12.

[0192] The medium feeding device 60 may include a detection unit that detects that the displacement unit 86 is at the first position P11. The medium feeding device 60 may include a detection unit that detects that the displacement unit 86 is at the second position P12, in which case the second regulating unit 87D may not be included. The control unit 23 may stop the reverse drive by the drive unit 65 when the displacement unit 86 is displaced from the first position P11 to the second position P12 based on the detection result by the detection unit.

[0193] The torque limiter 80 is not limited to rotating in the same rotation direction as the feed roller 63 based on the forward rotation force, but may rotate in the opposite rotation direction to the feed roller 63 based on the forward rotation force. This makes it possible to suppress the conveying force of the feed roller 63 and suppress double feeding of media.

[0194] The power transmission unit 66 may include a common power transmission unit that is common to the first power transmission path and the second power transmission path. The control unit 23 is not limited to successively executing the contact process and the feeding process, and may stop the drive unit 65 between the contact process and the feeding process, for example.

[0195] After a job is completed and the displacement unit 86 is located at the first position P11, the control unit 23 may cause the display unit 35 to display an image prompting an attachment / detachment instruction when a predetermined time has elapsed. After causing the display unit 35 to display an image prompting an attachment / detachment instruction, the control unit 23 may cause the displacement unit 86 to displace from the first position P11 to the second position P12 in response to an operation of the operation unit 34.

[0196] The arm unit 64 may be attached or detached when it is determined that replacement of the arm unit 64 is necessary based on at least one of the number of media fed and the number of feeding failures, other than in response to a user instruction.

[0197] In the above embodiment, a serial printer is used as the recording device 11, but this is not limited to the present invention. For example, a lateral printer or a line printer may be used as the recording device 11. A lateral printer is a printer in which the carriage can move in two directions, the main scanning direction and the sub-scanning direction. A line printer is a printer that has multiple nozzles arranged at a constant pitch in the width direction X, and can simultaneously eject liquid across the width of the medium.

[0198] The medium is not limited to paper. The medium may be a resin film or sheet, a composite film of resin and metal, a laminate film, a woven fabric, a nonwoven fabric, a metal foil, a metal film, a ceramic sheet, clothing, etc. The medium may also be unwound from a roll.

[0199] The liquid can be any liquid that can be applied to a medium to record on the medium. For example, ink includes particles of functional materials made of solids such as pigments and metal particles dissolved, dispersed or mixed in a solvent, and includes various compositions such as water-based ink, oil-based ink, gel ink, and hot melt ink.

[0200] The recording device 11 is not limited to an inkjet printer, but may be a dot impact printer. The recording method of the recording device 11 may be a laser method instead of an inkjet method.

[0201] The term "at least any" as used herein means one or more of the desired options. As an example, the term "at least any" as used herein means only one option or both options if the number of options is two. As another example, the term "at least any" as used herein means only one option or any combination of two or more options if the number of options is three or more.

[0202] [Note] The technical ideas and effects obtained from the above-described embodiment and modified examples will be described below.

[0203] (A) A medium feeding device includes a feed roller capable of feeding a medium placed on a medium loading section, a drive section for driving the feed roller, an arm section supporting the feed roller and rotatable around a drive shaft, and a displacement section capable of contacting the arm section and rotating the arm section by a forward rotation force from the drive section, wherein the feed roller feeds the medium placed on the medium loading section by the forward rotation force from the drive section, and the arm section moves the feed roller between an abutment position and a separation position. the contact position is a position where the feed roller contacts the medium placed on the medium loading section, and the separation position is a position where the feed roller is separated from the medium placed on the medium loading section, and the displacement section rotates the arm section so as to displace the feed roller from the separation position to the contact position by forward rotation force from the drive section, and rotates the arm section so as to displace the feed roller from the contact position to the separation position by reverse rotation force from the drive section.

[0204] According to this configuration, the feed roller and the displacement unit that displaces the arm unit that supports the feed roller can be driven by power from a common drive unit, which can therefore suppress bleed marks caused by the feed roller and prevent the device from becoming large.

[0205] (B) In the medium feeding device described in (A), the displacement portion may be displaceable between a first position and a second position, the first position being a position where the feed roller is displaced to the abutment position by not abutting the arm portion, and the second position being a position where the feed roller is displaced to the separated position by abutting the arm portion.

[0206] According to this configuration, the feed roller can be displaced to the contact position and the separated position by the power from the common drive unit with a simple configuration that switches between non-contact and contact between the displacement unit and the arm unit. Therefore, it is possible to suppress bleed marks caused by the feed roller and to suppress an increase in the size of the device.

[0207] (C) In the medium feeding device described in (B), the displacement portion may support the arm portion from below in the vertical direction when the arm portion is in the second position. According to this configuration, the feed roller can be displaced to the contact position and the separated position by the power from the common drive unit with a simple configuration that switches whether or not the displacement unit and the arm unit are supported from below. Therefore, it is possible to suppress bleed marks caused by the feed roller and to suppress an increase in the size of the device.

[0208] (D) The medium feeding device according to any one of (A) to (C) may include a rack that is movable in parallel, and the displacement portion may be provided on the rack. According to this configuration, the feed roller can be displaced to the contact position and the separation position by the power from the common drive unit with a simple configuration in which a displacement unit is provided on a translationally movable rack. Therefore, it is possible to suppress bleed marks caused by the feed roller and to suppress an increase in the size of the device.

[0209] (E) (D) The displacement portion is displaceable between a first position and a second position, the first position being a position for displacing the feed roller to the abutment position, and the second position being a position for displacing the feed roller to the separation position, the rack is movable in a first movement direction toward the feed roller and a second movement direction that is the opposite direction to the first movement direction, and when the displacement portion is positioned at the first position, the rack is positioned in the first movement direction further than the drive shaft and does not protrude in the second movement direction further than the drive shaft.

[0210] According to this configuration, the rack can be positioned in the first movement direction toward the feed roller from the drive shaft, which makes it possible to prevent the displacement of the arm from interfering with the drive shaft even when the arm and the rack are at their furthest positions.

[0211] (F) The medium feeding device described in any one of (A) to (E) includes a power transmission unit capable of transmitting power from the drive unit to the feed roller and the displacement unit, and the power transmission unit may have a one-way clutch that transmits forward rotation power from the drive unit to the feed roller but does not transmit reverse rotation power from the drive unit to the feed roller.

[0212] According to this configuration, the displacement unit can displace the feed roller to the separated position by the reverse force from the drive unit without the one-way clutch transmitting the reverse force to the feed roller. This allows the feed roller to be displaced to the separated position without rotating the feed roller. This can improve the alignment of the medium in contact with the feed roller.

[0213] (G) The medium feeding device described in any one of (A) to (F) includes a power transmission unit capable of transmitting power from the drive unit to the feed roller and the displacement unit, and a regulating unit that regulates displacement of the displacement unit, the displacement unit being displaceable between a first position and a second position, the first position being a position at which the feed roller is displaced to the abutting position, and the second position being a position at which the feed roller is displaced to the separated position, the regulating unit regulating the displacement of the displacement unit at the second position when the displacement unit displaces from the first position to the second position, and regulating the displacement of the displacement unit when the displacement unit displaces from the second position to the first position. When displaced, the displacement of the displacement part is regulated at the first position, and the power transmission part has a first power transmission part that transmits power from the drive part to the feed roller and a second power transmission part that transmits power from the drive part to the displacement part, and the second power transmission part has a torque limiter that cuts off the transmission of power under a predetermined load, and the torque limiter cuts off the transmission of power to the displacement part when the displacement of the displacement part is regulated by the regulating part at the second position, and cuts off the transmission of power to the displacement part when the displacement of the displacement part is regulated by the regulating part at the first position.

[0214] According to this configuration, when the displacement of the displacement part is restricted by the restricting part at the first position and the second position, a load equal to or greater than a predetermined load is applied to the torque limiter in the second power transmission part, causing the torque limiter to block the transmission of power to the displacement part. In this way, by providing the torque limiter, the load on the drive part when driving the feed roller can be suppressed. In particular, by providing the torque limiter in the second power transmission part having a different power transmission path to the feed roller, the torque limiter can be provided further upstream. Therefore, the load on the drive part when driving the feed roller can be suppressed. In addition, even if a detection part that detects the displacement of the displacement part to the first position and the second position is not provided, the displacement part can be displaced to the first position and the second position with high accuracy. Therefore, the alignment of the medium in contact with the feed roller can be improved.

[0215] (H) In the medium feeding device described in (G), the torque limiter may be provided coaxially with the drive shaft. According to this configuration, the arm can be made lighter than in a configuration in which the torque limiter is provided on the arm. This reduces the effect on the conveying force of the feed roller supported by the arm. Also, compared to a configuration in which the torque limiter is provided upstream of the drive shaft, the device can be prevented from becoming larger.

[0216] (I) In the medium feeding device described in any one of (A) to (H), the arm portion may support the feeding roller so that the feeding roller is swingable. According to this configuration, vibration of the feed roller can be suppressed.

[0217] (J) In the medium feeding device described in any one of (A) to (I), the arm portion may be detachable from the drive shaft. According to this configuration, the feed roller can be easily replaced by removing the arm portion from the drive shaft.

[0218] (K) The medium feeding device described in any one of (A) to (I) may include an arm retraction section that retracts the arm section to a retracted position when the medium placement section is pulled out in the pull-out direction.

[0219] According to this configuration, when the medium loading section is pulled out, interference between the medium loading section and the arm section can be suppressed. (L) A recording device includes a medium feeding device according to any one of (A) to (K) and a recording unit that records on the medium fed by the feeding roller. This configuration can achieve the same effect as (A).

[0220] (M) The recording device described in (L) may include an inversion unit that inverts the medium fed by the medium feeding device, and the recording unit may be capable of recording on double-sided printable photo paper as the medium, and may be capable of recording after the medium has been inverted by the inversion unit.

[0221] This configuration can prevent bleeding marks caused by the feed roller on double-sided printable photo paper, thereby providing an even more outstanding effect. (N) The recording device described in (L) or (M) may include a control unit, wherein the displacement unit is displaceable between a first position and a second position, the first position being a position where the feed roller is displaced to the abutment position, and the second position being a position where the feed roller is displaced to the separation position, and the control unit may displace the displacement unit to the second position in at least one of the following cases: when there is no next job after a job of recording on a medium is completed, when there is no next job for a predetermined time after a job of recording on a medium is completed, and when the power is turned off.

[0222] According to this configuration, when a job is finished and there is no next job, or when the power is turned off, the feed roller can be displaced to the separated position. This makes it possible to suppress bleed marks caused by the feed roller by displacing the feed roller to the separated position at an appropriate timing.

[0223] (O) A recording device described in any one of (L) to (N) includes a control unit and a medium detection unit that detects a leading edge of a medium fed by the feed roller, wherein the displacement unit is displaceable between a first position and a second position, the first position being a position for displacing the feed roller to the abutment position, and the second position being a position for displacing the feed roller to the separation position, and the control unit may determine that a feeding error has occurred when the leading edge of the medium is not detected by the medium detection unit even after a first time has elapsed since the drive unit began to be driven to feed the medium when the displacement unit is in the first position, and may determine that a feeding error has occurred when the leading edge of the medium is not detected by the medium detection unit even after a second time, which is longer than the first time, has elapsed since the drive unit began to be driven to feed the medium when the displacement unit is in the second position.

[0224] According to this configuration, when the medium is fed by the feed roller, the feed roller abuts on the medium after a time required for the displacement unit to displace from the second position to the first position when the displacement unit is at the second position, compared to when the displacement unit is at the first position. Therefore, when the medium is fed by the feed roller, the reference time for determining a feed error is set longer when the displacement unit is at the second position than when the displacement unit is at the first position, thereby improving the accuracy of determining a feed error.

[0225] (P) A recording device includes the medium feeding device described in (C), a recording unit that records on the medium fed by the feeding roller, and a control unit, wherein the arm unit is detachable from the drive shaft, and the control unit may displace the displacement unit from the second position to the first position when attaching or detaching the arm unit to or from the drive shaft when the displacement unit is in the second position.

[0226] According to this configuration, by displacing the displacement portion from the second position to the first position, interference between the displacement portion and the arm portion can be suppressed. This makes it easier to attach and detach the arm portion to and from the drive shaft. This improves user convenience.

[0227] (Q) The control method of a recording device according to (L) or (M) includes a control method in which the displacement unit is displaceable between a first position and a second position, the first position being a position for displacing the feed roller to the abutting position, the second position being a position for displacing the feed roller to the separated position, and the control method includes displacing the displacement unit to the second position at least in any of the following cases: when there is no next job after a job of recording on a medium is completed, when there is no next job for a predetermined time after a job of recording on a medium is completed, and when the power is turned off. With this configuration, it is possible to achieve an effect similar to that of (N).

[0228] (R) In the control method of a recording device described in (Q), the recording device may include a medium detection unit that detects the leading edge of the medium fed by the feed roller, and determining that a feeding error has occurred if the leading edge of the medium is not detected by the medium detection unit even after a first time has elapsed since the drive unit started to be driven to feed the medium when the displacement unit is at the first position, and determining that a feeding error has occurred if the leading edge of the medium is not detected by the medium detection unit even after a second time, which is longer than the first time, has elapsed since the drive unit started to be driven to feed the medium when the displacement unit is at the second position. With this configuration, it is possible to achieve an effect similar to that of (O).

[0229] (S) A method of controlling a recording device including the medium feeding device according to (C) and a recording unit that records on the medium fed by the feeding roller, the arm unit is detachable from the drive shaft, and includes displacing the displacement unit from the second position to the first position when attaching or detaching the arm unit from the drive shaft when the displacement unit is in the second position. This configuration can provide an effect similar to that of (P). [Explanation of symbols]

[0230] RA...recording area, 11...recording device, 12...front, 13...rear, 14...left side, 15...right side, 16...bottom, 17...top, 20...casing, 21...main body, 22...bottom plate, 22A...through hole, 23...control unit, 30...arm retraction unit, 30A...axis, 30B...main body, 30C...first lever, 30D...second lever, 30E...first engagement unit, 30F...second engagement unit, 31...capacity visualizing unit, 33...operation panel, 34...operation unit, 35...display unit, 37... Opening / closing section, 37A...lower end section, 37B...paper discharge tray, 38...discharge port, 39...gripping section, 40...liquid storage section, 41...storage chamber, 42...liquid inlet, 43...cap, 45...waste liquid mounting section, 46...waste liquid storage body, 48...recording section, 49...transport path, 49A...reversal path, 51...carriage, 52...liquid ejection head, 53...support section, 54...medium placement section, 54A...partition plate, 54B...first medium placement section, 54C...second medium placement section, 55...transport section, 56 ...pair of conveying rollers, 57...pair of discharge rollers, 58...reversing section, 59...media detection section, 60...media feeding device, 61...feed roller unit, 62...drive shaft, 62A...gear, 63...feed roller, 63A...first rotating shaft, 64...arm section, 64A...base end section, 64B...tip section, 64C...engaged section, 64D...inclined surface, 64E...recess, 64F...accommodation space, 65...drive section, 66...power transmission section, 67...displacement unit, 68...first power transmission section , 69...second power transmission portion, 70-75, 77-79, 81-83...gears, 76...second rotating shaft, 80...torque limiter, 84...rack, 85...first regulating portion, 86...displacement portion, 87...unit housing, 87A...first guide portion, 87B...second guide portion, 87C...notch portion, 87D...second regulating portion, 88...pressed portion, 88A...first surface, 88B...second surface, 89...pressing portion, 89A...protruding portion, 89B...urging portion, 90...frame, 90A...convex portion

Claims

1. A feeding roller capable of feeding the medium placed on the medium placement section, A drive unit for driving the aforementioned feeding roller, An arm portion that supports the aforementioned feeding roller and is rotatable around the drive shaft, A displacement unit that can come into contact with the arm portion and rotates the arm portion by the forward rotational force from the drive unit, Equipped with, The feeding roller feeds the medium placed on the medium placement section by the forward rotational power from the drive unit. The arm portion displaces the feeding roller between the contact position and the separated position. The aforementioned contact position is the position in which the feeding roller contacts the medium placed on the medium placement section. The aforementioned separation position is the position where the feeding roller separates from the medium placed on the medium placement section. The displacement unit rotates the arm portion so as to displace the feed roller from the separated position to the contact position by forward rotational force from the drive unit, and rotates the arm portion so as to displace the feed roller from the contact position to the separated position by reverse rotational force from the drive unit. A media supply and delivery device characterized by the following features.

2. In the medium supply device according to claim 1, The displacement part is displaceable between a first position and a second position. The first position is a position in which the feeding roller is displaced to the contact position by not contacting the arm portion. The second position is a position in which the feeding roller is displaced to the separated position by contact with the arm portion. A media supply and delivery device characterized by the following features.

3. In the medium supply device according to claim 2, The displacement portion supports the arm portion from below in the vertical direction at the second position. A media supply and delivery device characterized by the following features.

4. In the medium supply device according to claim 1, Equipped with a rack that can be moved in parallel, The displacement part is provided on the rack, A media supply and delivery device characterized by the following features.

5. In the medium supply device according to claim 4, The displacement part is displaceable between a first position and a second position. The first position is a position that displaces the feed roller to the contact position, The second position is a position that displaces the feed roller to the separated position, The rack is movable in a first direction toward the feed roller and in a second direction opposite to the first direction of movement. When the displacement portion is positioned at the first position, the rack is located relative to the drive shaft in the first direction of movement and does not protrude relative to the drive shaft in the second direction of movement. A media supply and delivery device characterized by the following features.

6. In the medium supply device according to claim 1, The system includes a power transmission unit capable of transmitting power from the drive unit to the feed roller and the displacement unit, The power transmission unit has a one-way clutch that transmits forward rotational power from the drive unit to the feed roller, but does not transmit reverse rotational power from the drive unit to the feed roller. A media supply and delivery device characterized by the following features.

7. In the medium supply device according to claim 1, A power transmission unit capable of transmitting power from the drive unit to the feed roller and the displacement unit, A restricting unit that restricts the displacement of the aforementioned displacement unit, Equipped with, The displacement part is displaceable between a first position and a second position. The first position is a position that displaces the feed roller to the contact position, The second position is a position that displaces the feed roller to the separated position, The restricting unit restricts the displacement of the displacement part at the second position when the displacement part is displaced from the first position to the second position, and restricts the displacement of the displacement part at the first position when the displacement part is displaced from the second position to the first position. The power transmission unit includes a first power transmission unit that transmits power from the drive unit to the feed roller, and a second power transmission unit that transmits power from the drive unit to the displacement unit. The second power transmission unit has a torque limiter that interrupts power transmission when a predetermined load is applied. The torque limiter interrupts the transmission of power to the displacement part when the displacement of the displacement part is restricted by the restricting part at the second position, and interrupts the transmission of power to the displacement part when the displacement of the displacement part is restricted by the restricting part at the first position. A media supply and delivery device characterized by the following features.

8. In the medium supply device according to claim 7, The torque limiter is provided coaxially with the drive shaft, A media supply and delivery device characterized by the following features.

9. In the medium supply device according to claim 1, The arm portion supports the feeding roller so that it can swing, A media supply and delivery device characterized by the following features.

10. In the medium supply device according to claim 1, The arm portion is detachable from the drive shaft. A media supply and delivery device characterized by the following features.

11. In the medium supply device according to claim 1, The system includes an arm retraction mechanism that retracts the arm to a retracted position when the media mounting section is pulled out in the pulling direction. A media supply and delivery device characterized by the following features.

12. A media supply device according to any one of claims 1 to 11, A recording unit that records on the medium fed by the aforementioned feeding roller, Equipped with, A recording device characterized by the following features.

13. In the recording device according to claim 12, The system includes a reversing unit that reverses the medium supplied by the aforementioned medium supply device, The recording unit is capable of recording on double-sided printable photographic paper as a medium, and is capable of recording after the medium has been inverted by the inversion unit. A recording device characterized by the following features.

14. In the recording device according to claim 12, Equipped with a control unit, The displacement part is displaceable between a first position and a second position. The first position is a position that displaces the feed roller to the contact position, The second position is a position that displaces the feed roller to the separated position, The control unit displaces the displacement unit to the second position in at least one of the following cases: when there is no next job after the completion of a job to record to the medium; when there is no next job for a predetermined period of time after the completion of a job to record to the medium; or when the power is turned off. A recording device characterized by the following features.

15. In the recording device according to claim 12, Control unit and A medium detection unit for detecting the leading edge of the medium fed by the feeding roller, Equipped with, The displacement part is displaceable between a first position and a second position. The first position is a position that displaces the feed roller to the contact position, The second position is a position that displaces the feed roller to the separated position, The control unit, When the displacement unit is in the first position, if the leading edge of the medium is not detected by the medium detection unit even after a first time has elapsed since the drive unit started to feed the medium, a feeding error is determined. When the displacement unit is in the second position, if the leading edge of the medium is not detected by the medium detection unit even after a second time, which is longer than the first time, has elapsed since the start of the drive unit's operation to feed the medium, then a feeding error is determined. A recording device characterized by the following features.

16. A media supply device according to claim 3, A recording unit that records on the medium fed by the aforementioned feeding roller, Control unit and Equipped with, The arm portion is detachable from the drive shaft, When the displacement portion is in the second position, the control unit displaces the displacement portion from the second position to the first position when attaching or detaching the arm portion from the drive shaft. A recording device characterized by the following features.

17. In the control method for a recording device according to claim 12, The displacement part is displaceable between a first position and a second position. The first position is a position that displaces the feed roller to the contact position, The second position is a position that displaces the feed roller to the separated position, The method includes displacing the displacement part to the second position in at least one of the following cases: when there is no next job after the completion of a job to record to a medium; when there is no next job for a predetermined period of time after the completion of a job to record to a medium; or when the power is turned off. A control method for a recording device, characterized by the following:

18. In the control method for a recording device according to claim 17, The recording device has a medium detection unit that detects the leading edge of the medium fed by the feeding roller, When the displacement unit is in the first position, if the leading edge of the medium is not detected by the medium detection unit even after a first time has elapsed since the drive unit started to feed the medium, a feeding error is determined. The system includes determining a feeding error if, when the displacement unit is in the second position, the leading edge of the medium is not detected by the medium detection unit even after a second time, which is longer than the first time, has elapsed since the start of the drive unit to feed the medium. A control method for a recording device, characterized by the following:

19. A control method for a recording device comprising a medium feeding device according to claim 3 and a recording unit that performs recording on a medium fed by the feeding roller, The arm portion is detachable from the drive shaft, When the displacement portion is in the second position, the process of attaching and detaching the arm portion from the drive shaft includes displacing the displacement portion from the second position to the first position. A control method for a recording device, characterized by the following:

20. A feeding roller capable of feeding a medium placed on a medium placement section, A drive unit for driving the aforementioned feeding roller, An arm portion that supports the aforementioned feeding roller and is rotatable around the drive shaft, A rack that is displaceable between a first position and a second position by being driven by power from the aforementioned drive unit, A displacement part provided on the rack, which is not in contact with the arm portion at the first position and is in contact with the arm portion at the second position, A pressing part that presses the rack against the second guide part when the rack is in the first position, The pressing portion comprises a biasing portion that applies pressing force, The arm portion is positioned in the contact position by the displacement portion when the rack is in the first position, and is positioned in the separated position by the displacement portion when the rack is in the second position. The aforementioned contact position is the position in which the feeding roller contacts the medium placed on the medium placement section. The aforementioned separation position is the position where the feeding roller separates from the medium placed on the medium placement section. The pressing portion presses the rack in the width direction by the biasing force provided by the biasing portion. Media feeding device.

21. In the medium supply device according to claim 20, The rack further comprises a pressed portion which is integrally formed with the rack, The pressing portion includes a protruding portion that can come into contact with the portion to be pressed, The rack is pressed in the width direction by the biasing force of the biasing portion, which causes the protruding portion to press against the pressed portion. Media feeding device.

22. In the medium supply device according to claim 21, The pressed portion has a first surface perpendicular to the width direction and a second surface continuous with the first surface and inclined in the width direction. Media feeding device.

23. In the medium supply device according to claim 22, When the rack is positioned in the first position, the protruding portion comes into contact with the first surface. Media feeding device.

24. In the medium supply device according to claim 23, When the rack is positioned in the second position, the protruding portion does not come into contact with the pressed portion. Media feeding device.

25. In the medium supply device according to claim 20, A media feeding device in which, when the feed roller unit supporting the feed roller is attached to or detached from the drive shaft while the rack is positioned in the first position, the rack does not move in the front-rear direction.

26. In the medium supply device according to claim 25, The pressing force applied by the pressing portion is set to be such that the rack does not move in the front-rear direction even when rotational power is applied to the drive shaft in conjunction with the attachment and detachment operation of the feed roller unit, and is such that the rack can move from the first position to the second position in response to the power from the drive unit. Media feeding device.

27. ​​In the medium supply device according to claim 20, A power transmission unit capable of transmitting power from the drive unit to the feed roller and the rack, The system includes a restricting unit for restricting the displacement of the rack, The restricting unit restricts the displacement of the rack at the second position when the rack is displaced from the first position to the second position, and restricts the displacement of the rack at the first position when the rack is displaced from the second position to the first position. The power transmission unit includes a first power transmission unit that transmits power from the drive unit to the feed roller, and a second power transmission unit that transmits power from the drive unit to the rack. The second power transmission unit has a torque limiter that interrupts power transmission when a predetermined load is applied. The torque limiter interrupts the transmission of power to the rack when the displacement of the rack is restricted by the restricting unit at the second position, and interrupts the transmission of power to the rack when the displacement of the rack is restricted by the restricting unit at the first position. Media feeding device.

28. In the medium supply device according to claim 27, The torque limiter is provided coaxially with the drive shaft, Media feeding device.

29. A media supply device according to any one of claims 20 to 28, The system includes a recording unit that records on a medium fed by the aforementioned feeding roller. Recording device.

Images