Medium feeding device and recording device

Abstract

To provide a technique for removing a roller support section more easily than before when replacing a feed roller, which was difficult to remove due to its engagement with a first lever and a cam section.SOLUTION: A medium feeding device includes: a roller support section that supports a feeding roller; a first engaging section that is rotatable around a first rotary shaft and rotates the roller support section in response to the attachment / detachment of a first tray; and a second engaging section that is rotatable around a second rotary shaft and rotates the roller support section in response to the attachment / detachment of a second tray. At least one of the first rotary shaft and the second rotary shaft is a moving shaft that is movable in an axial direction, and at least one of the first engaging section and the second engaging section is a movable engaging section, and the movable engaging section is movable between an engaging position to engage the roller support section and a disengaging position to disengage the roller support section by movement of the moving shaft in the axial direction, and the moving shaft is pressed in a direction toward the engaging position.SELECTED DRAWING: Figure 27A

Description

[Technical field]

[0001] The present invention relates to a medium feeding device that feeds a medium, and a recording device including the same. [Background technology]

[0002] The recording device described in Patent Document 1 includes an upper tray and a lower tray capable of storing recording paper. A tray storage section that stores the upper tray and the lower tray is provided with a holding means for holding a feed roller at an intermediate position. The intermediate position is lower than the height position of the feed roller when the feed roller contacts the bottom surface of the upper tray on which the recording paper is placed. The intermediate position is also higher than the height position of the feed roller when the feed roller contacts the topmost recording paper when the maximum number of recording papers is stored in the lower tray.

[0003] The feed roller is supported by a roller support portion. The holding means includes a first lever engageable with the roller support portion and a cam portion. The first lever swings the roller support portion in response to the installation state of the lower tray. The cam portion swings the roller support portion in response to the installation state of the upper tray. The first lever and the cam portion are each provided on a separate rotation shaft. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-2462 A Summary of the Invention [Problem to be solved by the invention]

[0005] When replacing the feed roller, it is necessary to remove the roller support part. However, since the first lever and the cam part are engaged with the roller support part, it is difficult to remove the roller support part, and an improvement in this respect was desired. [Means for solving the problem]

[0006] In order to solve the above problem, the medium feeding device of the present invention includes a first tray on which media is placed, a second tray on which media is placed and which is located above the first tray, a device body having the first tray and the second tray in a detachable manner, a feed roller that feeds media placed on the first tray and the second tray, a roller support portion that supports the feed roller and rotates in a first direction in which the feed roller advances into the first tray and in a second direction in which the feed roller retreats from the first tray, thereby moving the feed roller forward and backward relative to the first tray and the second tray, and a first engagement portion that is rotatable about a first rotation axis and rotates the roller support portion in response to the attachment and detachment of the first tray. and a second engagement portion that is rotatable around a second pivot axis and rotates the roller support portion in response to the attachment or detachment of the second tray, the roller support portion having a first abutment portion that abuts with the first engagement portion and a second abutment portion that abuts with the second engagement portion, at least one of the first pivot axis and the second pivot axis being a moving axis that is movable in the axial direction, an engagement portion provided on the moving axis, at least one of the first engagement portion and the second engagement portion being a moving engagement portion, the moving engagement portion being movable between an engagement position where it engages with the roller support portion and a release position where it releases the engagement with the roller support portion by moving the moving axis in the axial direction, and the moving engagement portion having a pressing portion that presses the moving axis toward the engagement position. A recording apparatus according to the present invention is characterized by comprising the medium feeding device and a recording section which performs recording on the medium fed by the medium feeding device. [Brief description of the drawings]

[0007] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] An enlarged view of the front of the printer. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. 2 is a side cross-sectional view showing the paper transport path of the printer. [Figure 7] FIG. 2 is a side cross-sectional view showing the paper transport path of the printer. [Figure 8] FIG. 13 is a perspective view of a holding unit that holds the feed roller at an intermediate position. [Figure 9] 13 is a perspective view of a holding unit that holds the intermediate position of the feed roller and a lower tray. FIG. [Figure 10A] 10 is a cross-sectional view corresponding to the FF cross section of FIG. 9, showing a state in which the roller support portion is at a second feeding position. [Figure 10B] 10 is a cross-sectional view corresponding to the FF cross section of FIG. 9, showing a state in which a roller support portion is at a first feeding position. [Figure 11] 13 is a perspective view showing the relationship between the second rotation shaft and the upper tray, with the roller support portion being in a first feeding position. FIG. [Figure 12] 13 is a perspective view showing the relationship between the second rotation shaft and the upper tray, with the roller support portion being in the second retracted position. FIG. [Figure 13] 13 is a perspective view showing the relationship between the second rotation shaft and the upper tray, with the roller support portion being in the second feeding position. FIG. [Figure 14] 14 is a perspective view showing the relationship between the second rotation shaft and the upper tray, in which the roller support portion has rotated from the state shown in FIG. 13 to the second retracted position. FIG. [Figure 15A] 12 is a cross-sectional view corresponding to the cross section AA of FIG. 11, showing a state in which a roller support part is at a first feeding position. [Figure 15B] 12 is a cross-sectional view corresponding to the cross section BB of FIG. 11, showing a state in which a roller support part is at a first feeding position. [Figure 16A] 12 is a cross-sectional view corresponding to the AA cross section in FIG. 11, illustrating a state in which the roller support portion has rotated from the first retracted position to the second feeding position. [Figure 16B]12 is a view corresponding to the cross section taken along the line BB in FIG. 11, illustrating a state in which the roller support portion has rotated from the first retracted position to the second feeding position. [Figure 17A] 12 is a cross-sectional view corresponding to the AA cross section in FIG. 11, illustrating a state in which the roller support portion has rotated from the first retracted position to the second feeding position. [Figure 17B] 12 is a view corresponding to the cross section taken along the line BB in FIG. 11, illustrating a state in which the roller support portion has rotated from the first retracted position to the second feeding position. [Figure 18A] 12 is a cross-sectional view corresponding to the AA cross section of FIG. 11, showing a state in which the roller support portion is in a second retracted position. [Figure 18B] 12 is a cross-sectional view corresponding to the cross section BB of FIG. 11, showing a state in which the roller support portion is in a second retracted position. [Figure 19A] 12 is a cross-sectional view corresponding to the cross section AA of FIG. 11, showing a state in which the roller support part is at a second feeding position. [Figure 19B] 12 is a cross-sectional view corresponding to the cross section BB of FIG. 11, showing a state in which the roller support part is at a second feeding position. [Figure 20A] 12 is a cross-sectional view corresponding to the cross section AA of FIG. 11, showing a state in which the roller support part is at a second feeding position. [Figure 20B] 12 is a cross-sectional view corresponding to the cross section BB of FIG. 11, showing a state in which the roller support part is at a second feeding position. [Figure 21] FIG. 4 is a diagram illustrating the position of a feed roller in the height direction. [Figure 22] FIG. 4 is a perspective view of a roller support portion, a first rotating shaft, and a second rotating shaft. [Figure 23] FIG. 4 is a perspective view of a roller support portion, a first rotating shaft, and a second rotating shaft. [Figure 24] FIG. 4 is a cross-sectional view of a support portion that supports a second rotating shaft. [Diagram 25] FIG. [Figure 26] FIG. [Figure 27A]10 is a cross-sectional view corresponding to the cross section FF of FIG. 9, showing a state in which the roller support part is in the middle of rotating from the first retracted position to the disengaged position. [Figure 27B] 10 is a cross-sectional view corresponding to the cross section FF of FIG. 9, showing a state in which the roller support part is in the middle of rotating from the first retracted position to the disengaged position. [Figure 27C] 10 is a cross-sectional view corresponding to the FF cross section of FIG. 9, showing a state in which the roller support portion is in a disengaged position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The present invention will now be briefly described. A medium feeding device according to a first aspect includes a first tray on which a medium is placed, a second tray on which a medium is placed and which is located above the first tray, a device body having the first tray and the second tray in a detachable manner, a feed roller that feeds the medium placed on the first tray and the second tray, a roller support portion that supports the feed roller and rotates in a first direction in which the feed roller advances into the first tray and in a second direction in which the feed roller retreats from the first tray to move the feed roller forward and backward relative to the first tray and the second tray, a first engagement portion that is rotatable about a first rotation axis and rotates the roller support portion in response to the attachment and detachment of the first tray, and a second rotation axis that supports the feed roller and rotates the roller support portion in response to the attachment and detachment of the first tray. and a second engagement portion that is rotatable around an axis and rotates the roller support portion in response to the attachment or detachment of the second tray, the roller support portion having a first abutment portion that abuts the first engagement portion and a second abutment portion that abuts the second engagement portion, at least one of the first rotation axis and the second rotation axis is a moving axis that is movable in the axial direction, an engagement portion provided on the moving axis, at least one of the first engagement portion and the second engagement portion being a moving engagement portion, the moving engagement portion being movable between an engagement position where it engages with the roller support portion and a release position where it releases the engagement with the roller support portion by moving the moving axis in the axial direction, and the moving engagement portion is provided with a pressing portion that presses the moving axis toward the engagement position.

[0009] According to this aspect, the movable engagement portion can be moved between the engagement position and the release position as the movable shaft moves in the axial direction, and therefore the roller support portion can be easily attached and detached by moving the movable engagement portion to the release position. In addition, since the movable shaft is pressed in the direction in which the movable engagement part moves toward the engagement position, the movable engagement part can return to the engagement position by releasing the movable engagement part after moving it to the release position, which makes it even easier to attach and detach the roller support part. In addition, when the movable engagement portion is in the engagement position, the movable engagement portion is less likely to move in the direction toward the release. As a result, it is possible to suppress the occurrence of a malfunction in which the movable engagement portion unintentionally comes out of the engagement position when the movable engagement portion is in the engagement position, making it impossible to rotate the roller support portion by the movable engagement portion.

[0010] A second aspect is an aspect dependent on the first aspect, and is characterized in that it includes a regulating portion that regulates the pressing of the moving shaft by the pressing portion when the moving engagement portion is in the engagement position.

[0011] According to this aspect, since the restricting portion restricts the pressing of the moving shaft by the pressing portion when the moving engagement portion is in the engagement position, the moving engagement portion can be prevented from being pressed excessively against the roller support portion, thereby preventing excessive load from being applied to the roller support portion and the moving engagement portion.

[0012] A third aspect is an aspect that is dependent on the first aspect, wherein the second engagement portion is the movable engagement portion, and the roller support portion is displaceable by rotating to a first feeding position where the feeding roller can feed a medium placed on the first tray, a first retracted position which is a position rotated in the second direction from the first feeding position and retracted from the first tray by being supported by the first engagement portion via the first abutment portion, and a disengagement position which is a position rotated in the first direction from the first feeding position and where the engagement between the rotation shaft of the roller support portion and the roller support portion can be disengaged, wherein the engagement between the first engagement portion and the first abutment portion is disengaged by the rotation of the first rotation shaft, and the engagement between the second engagement portion and the second abutment portion is disengaged by the movement of the second rotation shaft, thereby enabling the roller support portion to rotate from the first feeding position to the disengagement position.

[0013] According to this aspect, the roller support part can be rotated from the first feeding position to the disengaged position by the rotation of the first rotation shaft and the movement of the second rotation shaft, so that interference between the first engagement part and the second engagement part can be avoided when removing the roller support part, and as a result, the roller support part can be removed with good workability. Incidentally, this aspect is not limited to the above-mentioned first aspect, and may be subordinate to the above-mentioned second aspect.

[0014] A fourth aspect is an aspect dependent on the third aspect, and is characterized in that an operating portion to which an operating force for rotating the first rotating shaft is applied is provided on the first rotating shaft. According to this aspect, since the operating portion to which an operating force for rotating the first rotating shaft is applied is provided on the first rotating shaft, the first rotating shaft can be rotated easily, and as a result, the roller support portion can be attached and detached even more easily. Incidentally, this aspect is not limited to the above-mentioned third aspect, and may be subordinate to the above-mentioned first or second aspect.

[0015] A fifth aspect is a dependent aspect of the third aspect, characterized in that the first rotation axis and the second rotation axis are parallel, and the first engagement portion and the second engagement portion are capable of overlapping when viewed in the axial direction of the first rotation axis and the second rotation axis.

[0016] According to this aspect, the first engagement portion and the second engagement portion can overlap when viewed in the axial direction of the first rotation shaft and the second rotation shaft, which allows the device to be made more compact than a configuration in which the first engagement portion and the second engagement portion do not overlap when viewed in the axial direction. In addition, in such a configuration, due to the action effect of the third aspect described above, interference between the first engagement portion and the second engagement portion can be avoided when removing the roller support portion, and the roller support portion can be removed with good workability. Incidentally, this aspect is not limited to the above-mentioned third aspect, and may be subordinate to any of the above-mentioned first, second, and fourth aspects.

[0017] A sixth aspect is a dependent aspect of the first aspect, characterized in that at least one of the first rotating shaft and the second rotating shaft is rotatably held by a support part having an opening formed therein and a cover part covering at least a portion of the opening.

[0018] According to this aspect, at least one of the first rotating shaft and the second rotating shaft is rotatably held by a shaft support part having an opening and a cover part covering at least a part of the opening. This allows the first rotating shaft or the second rotating shaft to be easily fitted into the shaft support part via the opening. In addition, the cover part can prevent the first rotating shaft or the second rotating shaft from coming out of the shaft support part. Incidentally, this aspect is not limited to the above-mentioned first aspect, and may be subordinate to any of the above-mentioned second to fifth aspects.

[0019] A seventh aspect is a dependent aspect of the third aspect, and is characterized in that the roller support portion is displaceable between a second feeding position where the feeding roller can feed a medium placed on the second tray and a second retracted position which is a position rotated in the second direction from the second feeding position and retracted from the second tray by being supported by the second engagement portion via the second abutment portion, and the first retracted position is a position where the roller support portion is rotated in the first direction from the second retracted position. According to this aspect, in the configuration in which the first retracted position is a position where the roller support portion has rotated from the second retracted position in the first direction, the operational effect of the third aspect described above can be obtained.

[0020] The recording device of the eighth aspect is characterized in that it comprises the medium feeding device of any one of the first to seventh aspects and a recording unit that performs recording on the medium fed by the medium feeding device. According to this aspect, in a recording device that records on a medium, the effects of any one of the above-mentioned first to eighth aspects can be obtained.

[0021] A ninth aspect is a dependent aspect of the eighth aspect, and further includes an ejection tray on which media recorded and ejected by the recording unit is loaded, the ejection tray is displaceable between a usage state and a storage state, and when the first tray and the second tray are removed and the ejection tray is in the usage state, the roller support portion and the first pivot shaft and the second pivot shaft are exposed.

[0022] According to this aspect, when the first tray and the second tray are removed and the discharge tray is in the used state, the roller support part and the first rotating shaft and the second rotating shaft are exposed, making it possible to easily replace the roller support part.

[0023] The present invention will be specifically described below. In the following, an inkjet printer 1 that performs recording by ejecting ink, which is an example of a liquid, onto a medium such as recording paper will be described as an example of a recording device. In the following, the inkjet printer 1 will be abbreviated to printer 1.

[0024] The XYZ coordinate system shown in each figure is an orthogonal coordinate system, and the X-axis direction is a direction intersecting the medium transport direction, i.e., the medium width direction and the device width direction. The +X direction of the X-axis direction is the left direction as seen by a user facing the operation panel 5 described later, and the -X direction is the right direction. The Y-axis direction is the depth direction of the device. The +Y direction of the Y-axis direction is the direction from the rear side of the device to the front side of the device, and the -Y direction is the direction from the front side of the device to the rear side of the device. The Z-axis direction is the vertical direction and is the normal direction to the surface on which the printer 1 is placed, that is, the device height direction. In the Z-axis direction, the +Z direction is the upward direction, and the -Z direction is the downward direction.

[0025] ■■■1. Overall configuration of the printer■■■■■■■■■■■■■■■■■■■■■■■■■ The overall configuration of the printer 1 will be outlined below with reference to Figures 1 to 7. The printer 1 is equipped with a scanner unit 3, which is an example of an image reading device, on top of a device main body 2. In other words, the printer 1 is configured as a multifunction device that has an image reading function in addition to an inkjet recording function. From the viewpoint of feeding the medium, the printer 1 can also be called a medium feeding device 100. In this case, the printer 1 includes the medium feeding device 100 and a recording head 30, which is an example of a recording unit described below.

[0026] The scanner unit 3 is provided rotatably relative to the device body 2, and can be rotated between a closed state (FIG. 1) and an open state (not shown). The scanner unit 3 has an upper cover 4 which can be opened and closed. When the cover 4 is opened, a document table 3a (see FIGS. 6 and 7) of the scanner unit 3 appears.

[0027] On the front side of the device, reference numeral 5 denotes an operation panel including a power button, operation buttons for performing various print settings and recording execution, a display unit for displaying print setting contents and a preview of a print image, and the like. Also, on the front of the device, reference numeral 59 denotes an openable and closable cover provided on the lower tray 50. The cover 59 can be in a closed state (FIG. 1) or an open state (FIG. 2). By opening the cover 59, the lower tray 50, the upper tray 60, and the discharge tray 8 are exposed on the front side of the device. The lower tray 50 is an example of a first tray, and the upper tray 60 is an example of a second tray located above the lower tray 50.

[0028] The discharge tray 8 can be in a stored state (see FIGS. 1 and 2) in which it is stored in the device body 2 by the power of a motor (not shown), and in a usage state (see FIGS. 6 and 7) in which it protrudes to the front side of the device body 2. When the discharge tray 8 is in the usage state protruding to the front side of the device body 2, it can receive media that has been recorded on and discharged.

[0029] The lower tray 50 and the upper tray 60 provided thereon can store multiple media, and each can be independently attached to and detached from the device body 2 and can move in the Y-axis direction. Even if one of the lower tray 50 and the upper tray 60 is not attached, media can be sent out from the attached tray as long as the other is attached. In FIG. 3, reference numeral 36 denotes a lower guide rail that guides and supports the lower tray 50 in the attachment / detachment direction, and reference numeral 35 denotes an upper guide rail that guides and supports the upper tray 60 in the attachment / detachment direction. In FIG. 3, reference numeral 49 denotes a tray storage section provided in the device body 2 that stores the lower tray 50 and the upper tray 60.

[0030] In this way, the lower tray 50 and the upper tray 60 can each be attached and detached independently from the device main body 2, and when setting media in one tray, there is no need to pull out the other tray, thereby improving the ease of use when setting media in a recording device equipped with multiple trays.

[0031] Incidentally, the upper tray 60, which will be described in detail later, can slide between a retracted position (see FIG. 6) and a stop position (see FIG. 7) when attached to the device main body 2. The upper tray 60 is in an "attached state" whether it is in the retracted position or the stop position, or between these positions. When the upper tray 60 is positioned further forward than the retracted position, specifically further in the +Y direction than the position in FIG. 6, the upper tray 60 is in an incompletely attached state, that is, an "unattached state."

[0032] As for the lower tray 50, the state in which it is pushed all the way to the end position (see Figs. 6 and 7) is the "attached state", and any other state is the "not attached state." However, in the following, the "upper and lower trays not attached state" refers to the state in which both the lower tray 50 and the upper tray 60 are removed from the device main body 2.

[0033] 1 and 2, an openable and closable manual feed cover 6 is provided at the upper rear portion of the device body 2. By opening this manual feed cover 6, it is possible to manually feed media using a manual feed tray 7 (see FIGS. 6 and 7).

[0034] Next, the medium transport path of the printer 1 will be described with reference to Figures 6 and 7. The upper tray 60 is displaced between a feedable position (see Figure 7) and a retracted position (see Figure 6) by receiving power from a motor (not shown). Note that in Figures 6 and 7, the medium stored in the lower tray 50 is indicated by the symbol P1, and the medium stored in the upper tray 60 is indicated by the symbol P2. Hereinafter, when there is no need to particularly distinguish between medium P1 and medium P2, they will be referred to as "medium P."

[0035] A feed roller 10 driven by a motor (not shown) is provided in the +Z direction relative to the lower tray 50 and the upper tray 60. The term "feed roller" may be replaced with "pick roller." The feed roller 10 is provided on a roller support portion 11 that rotates around a rotation shaft 12. The roller support portion 11 rotates in a first direction C1 in which the feed roller 10 advances into the lower tray 50 and in a second direction C2 in which the feed roller 10 retreats from the lower tray 550. The roller support portion 11 rotates in the first direction C1 and the second direction C2 to move the feed roller 10 forward and backward relative to the lower tray 50 and the upper tray 60. The term "roller support portion" may be interchangeable with a pickup arm or a swinging member.

[0036] When the upper tray 60 is in the retracted position (see FIG. 6), the feed roller 10 rotates in contact with the topmost medium P1 stored in the lower tray 50, thereby sending out the topmost medium P1 from the lower tray 50. Furthermore, when the upper tray 60 is in the end position (see Figure 7), i.e., when the upper tray 60 is in the feeding position, the feed roller 10 rotates in contact with the topmost medium P2 stored in the upper tray 60, thereby feeding the topmost medium P2 out of the upper tray 60. Incidentally, even if either the lower tray 50 or the upper tray 60 is not installed, the medium P can be fed from the other tray. This ensures freedom in paper feeding and improves the ease of handling of the device.

[0037] The rotating shaft 12 constitutes the rotation shaft of the roller support part 11 as shown in FIG. 8. The rotating shaft 12 rotates by receiving power from a motor (not shown). A transmission gear 13 is provided on the rotating shaft 12 and rotates integrally with the rotating shaft 12. The transmission gear 13 is provided at a position corresponding to the center of the upper tray 60 and the lower tray 50 in the X-axis direction. When the rotating shaft 12 rotates, power is transmitted from the transmission gear 13 via a toothed wheel train 14 to a transmitted gear 15 provided integrally with the feed roller 10. In this embodiment, the feed roller 10 is provided on both sides of the transmitted gear 15 in the X-axis direction.

[0038] 6 and 7, a separation slope 16 is provided at a position facing the leading ends of the lower tray 50 and the upper tray 60 in the device body 2. When the lower tray 50 is attached, a stopper 50d (see FIG. 4) provided at the leading end of the lower tray 50 enters further back (in the -Y direction in FIG. 6) than the separation slope 16. This allows the leading ends of the media stored in the lower tray 50 to come into contact with the separation slope 16.

[0039] In the upper tray 60, when the upper tray 60 is positioned at the feeding position (see FIG. 7), a stopper 60c (see FIG. 5) provided at the tip of the upper tray 60 enters deeper than the separation slope 16. This allows the tip of the medium stored in the upper tray 60 to come into contact with the separation slope 16. The media P sent out from the lower tray 50 or the upper tray 60 moves downstream with its leading edge in contact with the separation slope 16, whereby the topmost media P to be fed is separated from the next and subsequent media P.

[0040] An intermediate roller 17 that is driven to rotate by a motor 65 (not shown) is provided downstream of the separation slope 16. The intermediate roller 17 causes the medium P to bend and turn over, and move toward the front side of the device. Reference numerals 18, 19, 20, and 21 denote driven rollers that can be rotated by the rollers. The medium P sent out from the lower tray 50 or the upper tray 60 is nipped by the intermediate roller 17 and the driven rollers 19 and 20, and sent downstream.

[0041] Provided downstream of the intermediate roller 17 are a transport drive roller 24 that is driven to rotate by a motor (not shown), and a transport driven roller 25 that rotates in contact with the transport drive roller 24. These rollers transport the medium P to below a recording head 30 serving as a recording unit. A recording head 30 that ejects ink is provided at the bottom of the carriage 29. The carriage 29 receives power from a motor (not shown) and reciprocates in the X-axis direction.

[0042] A support member 28 that supports the medium P is provided at a position facing the recording head 30, and the support member 28 defines the distance between the medium P and the recording head 30. A discharge drive roller 31 that is driven to rotate by a motor (not shown), and a discharge driven roller 32 that is in contact with the discharge drive roller 31 and rotates in response thereto, are provided downstream of the support member 28. The medium P on which recording has been performed by the recording head 30 is discharged by these rollers toward the discharge tray 8 described above. When recording on both sides of medium P, after recording on the first side of medium P with recording head 30, medium P is switched back in the -Y direction. As a result, medium P is nipped between intermediate roller 17 and driven roller 18, and enters the feeding path from below intermediate roller 17. Medium P is then turned over and sent to a position facing recording head 30, where recording can be performed on the second side of medium P, which is opposite to the first side.

[0043] 2. Configuration of the Media Feeder Device The medium feeding device 100 including the feeding roller 10, the roller support portion 11, the lower tray 50, and the upper tray 60 will be further described below. 6 and 7, the lower tray 50 is provided on its bottom surface 50a with an edge guide 52 that is slidable in the medium feeding direction. This edge guide 52 regulates the position of the rear edge of the medium P1. In this specification, the medium feeding direction from the lower tray 50 or the upper tray 60 is the -Y direction. The medium length direction and the sliding direction of the upper tray 60 are the Y axis direction.

[0044] The lower tray 50 is provided with edge guides 51A, 51B that are slidable in the media width direction as shown in Fig. 4, and these edge guides 51A, 51B regulate the position of the side edges of the media. The two edge guides 51A, 51B are provided so that they can be displaced synchronously and positioned symmetrically around the center position in the media width direction. That is, the printer 1 according to this embodiment uses the center position in the media width direction as the feeding reference position. The same is true for the upper tray 60.

[0045] A high-friction material 53 is disposed on the bottom surface 50a of the lower tray 50 near a location corresponding to the contact position between the feed roller 10 and the medium P1. This high-friction material 53 holds the medium bundle so that it is not sent downstream when the feed roller 10 sends out the media. A stopper 50d that restricts the position of the leading edge of the medium is provided on the leading edge side of the medium in the lower tray 50. This stopper 50d holds the medium P1 so that it does not jump out of the lower tray 50 when the medium P1 is set in the lower tray 50. When the lower tray 50 is attached to the device body 2 as described above, this stopper 50d enters the device rearward, i.e., in the -Y direction, beyond the separation slope 16 and does not come into contact with the leading edge of the medium P1 that is fed when the medium is fed.

[0046] 5, the upper tray 60 is also provided with an edge guide 62 slidable in the medium length direction, edge guides 61A and 61B slidable in the medium width direction, and stoppers 60c, 60c on its bottom surface 60a, similar to the lower tray 50. Also, a high friction material 63 is provided near the location corresponding to the contact position between the feed roller 10 and medium P2.

[0047] The upper tray 60 is provided so as to be slidable along the Y-axis direction when attached to the apparatus main body 2 as described above. A rack portion 60b is formed on the upper surface of one end of the upper tray 60 along the sliding direction of the upper tray 60. A pinion gear (not shown) meshes with the rack portion 60b, thereby forming a rack and pinion mechanism. The pinion gear rotates by the power of a motor (not shown), causing the upper tray 60 to slide between a feedable position (see FIG. 7) and a retracted position (see FIG. 6).

[0048] 3. Maintaining the roller support part in the middle position Next, a means for holding the feed roller 10 at the intermediate position will be described. Fig. 21 shows positions that feed roller 10 can take in the Z-axis direction. Positions H1M, H2M, and Hc indicate height positions that the lowest position of feed roller 10 can take. In the following, the position of feed roller 10 in the Z-axis direction is based on the lowest position of feed roller 10. The feed roller 10 indicated by the two-dot chain line in Fig. 21 indicates feed roller 10 at intermediate position Hc, which will be described later.

[0049] When medium P1 is fed from lower tray 50, the position of feed roller 10 in the Z-axis direction changes between bottom surface 50a and position H1M. Position H1M is the position at which feed roller 10 comes into contact with the uppermost medium P1 when the maximum number of media P1 is stored in lower tray 50. Furthermore, when medium P2 is fed from upper tray 60, the position of feed roller 10 in the Z-axis direction changes between bottom surface 60a and position H2M. Position H2M is the position at which feed roller 10 comes into contact with the uppermost medium P2 when the maximum number of media P2 is stored in upper tray 60. Position Hc is an intermediate position which will be described below.

[0050] 8 and 9, the printer 1 is provided with a holding means 39 that holds the roller support portion 11 so that the feed roller 10 is located at the intermediate position Hc. When both the lower tray 50 and the upper tray 60 are removed from the device body 2, the feed roller 10 is held at the intermediate position Hc by the holding means 39. As shown in Fig. 21, the intermediate position Hc is lower than the height position of the bottom surface 60a of the upper tray 60 and higher than position H1M. 15A and 15B show a state in which the feed roller 10 is at the intermediate position Hc. In the following description, a state in which both the lower tray 50 and the upper tray 60 are removed from the device main body 2 will be referred to as a "state in which the upper and lower trays are not attached."

[0051] 8 and 9, the holding means 39 includes a slider 43, a first rotating shaft 40, a first lever 41, and a second lever . The slider 43 is provided so as to be slidable in the -Y direction, which is the mounting direction of the lower tray 50, and in the +Y direction, which is the opposite direction, and is provided so as to be engageable with the lower tray 50. The first rotating shaft 40 is rotatable. The first lever 41 is an example of a "first engaging portion", and is provided on one end side of the first rotating shaft 40 and is engageable with the roller support portion 11. The tip of the first lever 41 is formed in a hook shape so as to be able to be hooked on a rib-shaped first abutment portion 11c, which will be described later. The second lever 42 is provided on the other end side of the first rotating shaft 40 and is engageable with the slider 43 .

[0052] The slider 43 is provided on a frame (not shown). The first rotating shaft 40 and the rotating shaft 12 are supported by an upper frame 37 (see FIG. 22) provided above the upper tray 60. The holding means 39 also includes a coil spring 44 as a shaft biasing means for biasing the first rotating shaft 40 in a direction in which the first lever 41 pushes up the roller support portion 11 .

[0053] The coil spring 44 exerts a biasing force between the upper frame 37 and the second lever 42. As a result, the coil spring 44 biases the roller support portion 11 in a direction to push it upward via the second lever 42, the first rotating shaft 40, and the first lever 41. The roller support portion 11 has a first abutment portion 11c (see FIGS. 10A and 10B) that abuts against the first lever 41. When the slider 43 is not engaged with the pressing portion 50e of the lower tray 50, that is, when the lower tray 50 is not yet attached, the first contact portion 11c is caught on the tip of the first lever 41, and the roller support portion 11 is held by the first lever 41 so as not to rotate in the first direction C1 under its own weight. As a result, the feed roller 10 is held in the intermediate position Hc.

[0054] In this state, the second lever 42 presses the second engagement portion 43b of the slider 43 in the +Y direction, that is, in the tray removal direction, so that the slider 43 is located at the end of its sliding range in the +Y direction. When the lower tray 50 is attached from the state where the upper and lower trays are not yet attached, the first engagement portion 43a of the slider 43 engages with the pressing portion 50e at the tip of the lower tray 50, and the slider 43 is pushed in the tray attachment direction, i.e., the -Y direction. This causes the second engagement portion 43b of the slider 43 to rotate the first rotating shaft 40 via the second lever 42 against the biasing force of the coil spring 44. This rotation of the first rotating shaft 40 lowers the tip of the first lever 41, and the roller support portion 11 becomes rotatable in the first direction C1. That is, the feed roller 10 is released from the intermediate position Hc, and the feed roller 10 lowers by its own weight, and can come into contact with the medium P1 stored in the lower tray 50 (see FIG. 10B).

[0055] As described above, the first lever 41 serving as the first engagement portion is rotatable about the first rotation shaft 40, and rotates the roller support portion 11 in response to the attachment or detachment of the lower tray 50. Incidentally, the roller support part 11 is in a position where it interferes with the upper tray 60 at the intermediate position Hc of the feed roller 10, but when the upper tray 60 is attached, the roller support part 11 is pushed up by a cam mechanism, which will be described later, so that the upper tray 60 does not collide with the roller support part 11. When the upper tray 60 is attached, as shown in Fig. 10A, the first contact part 11c of the roller support part 11 and the first lever 41 are separated from each other, so that the first lever 41 does not hinder the swinging motion of the roller support part 11 when the medium is fed from the upper tray 60.

[0056] The position of the roller support part 11 when the feed roller 10 is displaced between the bottom surface 50a of the lower tray 50 and the position H1M (FIG. 21) is defined as the first feed position. The position where the roller support part 11 rotates in the second direction C2 from the first feed position and retreats from the lower tray 50 by being supported by the first lever 41 via the first contact part 11c is defined as the first retreat position. The position of the roller support part 11 when the feed roller 10 is in the intermediate position Hc is an example of the first retreat position. The roller support portion 11 can take a disengagement position, which is a position rotated in the first direction C1 from the first feeding position, where the engagement between the rotating shaft 12 and the roller support portion 11 can be released, as will be described later.

[0057] ■■■4. Changing the position of the roller support part by the upper tray■■■■■■■■■■ Next, the switching of the position of the roller support portion 11 by the upper tray 60 will be described. A tray storage section 49 (see FIG. 3) that stores the upper and lower trays is provided with a second rotating shaft 45, which is an example of a "moving shaft", as shown in FIG. 8 and FIG. 9. The second rotating shaft 45 is supported by the upper frame 37 (see FIG. 22). The second rotating shaft 45 extends in the same direction as the X-axis direction, which is the extension direction of the rotating shaft 12, and has a cam follower portion 46 provided on one end side and a cam portion 47, which is an example of a "second engagement portion" and a "moving engagement portion", provided on the other end side.

[0058] The cam follower portion 46 provided on the second rotating shaft 45 is provided at a position where it can engage with the tip portion 60d of the upper tray 60 (see FIG. 5). Also, cam portion 47 provided on second rotating shaft 45 can enter opening 11e (see FIGS. 11 to 14) formed on the side surface of roller support portion 11 in the -X direction. Second contact portion 11d is provided on the inside of opening 11e in roller support portion 11. Cam portion 47 can enter into opening 11e and come into contact with second contact portion 11d. Cam portion 47 can come into contact with second contact portion 11d to push roller support portion 11 upward. The above-mentioned first contact portion 11c (see Figs. 10A and 10B) is located in the +X direction with respect to the second contact portion 11d. The first contact portion 11c is located on the inner side, i.e., on the center side in the X-axis direction, with respect to the second contact portion 11d. The first contact portion 11c and the second contact portion 11d are continuously formed as a rib-like portion (see Fig. 25). 11 to 14, the first rotating shaft 40, the first lever 41, and the second lever 42 described above are omitted from the illustration.

[0059] 11, 15A, and 15B show a state in which the lower tray 50 is attached, the upper tray 60 is in the retracted position, and the roller support portion 11 is in the first retracted position. In this state, the cam follower portion 46 starts to come into contact with the tip portion 60d of the upper tray 60 as shown in Fig. 15B, but the cam portion 47 does not push up the second contact portion 11d of the roller support portion 11 as shown in Fig. 15A. Therefore, the roller support portion 11 is in a position where it interferes with the upper tray 60.

[0060] When the upper tray 60 moves from this state toward the feeding position, i.e., in the -Y direction, as shown in Fig. 16B, the cam follower portion 46 is pushed up by the tip portion 60d of the upper tray 60. Accordingly, the cam portion 47 comes into contact with the second contact portion 11d of the roller support portion 11 as shown in Fig. 16A. Then, when the upper tray 60 moves further from this state toward the feeding position, the cam follower portion 46 is pushed up by the tip portion 60d of the upper tray 60 as shown in Fig. 17B. As a result, the cam portion 47 pushes up the second abutment portion 11d of the roller support portion 11 as shown in Fig. 17A, causing the second rotating shaft 45 to rotate and the roller support portion 11 to swing. As a result, the roller support portion 11 retreats upward from the advance / retract area of ​​the upper tray 60.

[0061] Then, when the upper tray 60 moves further from this state toward the feeding position, the cam follower portion 46 comes into contact with the top surface of the upper tray 60 as shown in FIG. In this state, roller support portion 11 tries to move downward due to its own weight. However, due to the actions of cam portion 47, second rotating shaft 45, and cam follower portion 46, roller support portion 11 maintains its upwardly swung position.

[0062] When the upper tray 60 moves further from the state shown in FIG. 12 toward the feedable position, the state shown in FIG. 18A and FIG. 18B is reached. Here, as shown in Fig. 18B, a recess 60e and a slope 60f are formed in the upper tray 60. When the upper tray 60 moves further from the position shown in Fig. 18B toward the feeding position, the cam follower portion 46 is guided from the top surface of the upper tray 60 to the slope 60f as shown in Fig. 14 and Fig. 19B, and enters the recess 60e as shown in Fig. 13. This entry of the cam follower portion 46 into the recess 60e releases the support of the roller support portion 11 by the cam portion 47, and the roller support portion 11 becomes swingable downward as shown in Fig. 19A.

[0063] 13, 20A, and 20B show a state in which the upper tray 60 has moved further in the -Y direction, i.e., toward the feeding position, from the state shown in Fig. 14, 19A, and 19B. That is, the state is shown in which the upper tray 60 is located at a feeding position where the medium P can be fed from the upper tray 60. In this state, the feeding roller 10 supported by the roller support portion 11 is in a position where it can come into contact with the medium P2 stored in the upper tray 60, and the medium can be fed from the upper tray 60.

[0064] 14 and 19B, the cam follower portion 46 is guided by the inclined surface 60f to the upper surface of the upper tray 60. As a result, the roller support portion 11 is pushed upward again, and the feed roller 10 moves away from the medium P2 stored in the upper tray 60.

[0065] As described above, the cam portion 47 serving as the second engagement portion is rotatable about the second rotation shaft 45, and rotates the roller support portion 11 in response to the attachment and detachment of the upper tray 60. The position of the roller support part 11 when the feed roller 10 is displaced between the bottom surface 60a of the upper tray 60 and the position H2M (FIG. 21) is referred to as a second feed position (see FIGS. 13, 20A, and 20B). In addition, the position where the roller support portion 11 rotates in the second direction C2 from the second feeding position and retreats from the upper tray 60 by being supported by the cam portion 47 via the second abutment portion 11d is referred to as the second retreat position (see Figures 12, 18A, and 18B). The above-mentioned first retracted position, that is, the position of the roller support part 11 when the feed roller 10 is in the intermediate position Hc, is a position rotated in the first direction C1 from the second retracted position.

[0066] ■■■5. Axis support structure■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ The support structures for the rotating shaft 12, the first rotating shaft 40, and the second rotating shaft 45 will be described below. The rotating shaft 12 is supported by an upper frame 37 and a lower frame 38. As shown in Fig. 22, a supporting portion 37a is formed on the upper frame 37. The end of the rotating shaft 12 in the +X direction is supported by the supporting portion 37a. The end of the rotating shaft 12 in the -X direction is supported by a supporting portion (not shown) formed on the lower frame 38 shown in Fig. 23.

[0067] The first rotating shaft 40 is supported by an upper frame 37 and a lower frame 38. As shown in Fig. 22, a supporting portion 37b is formed on the upper frame 37. The end of the first rotating shaft 40 in the +X direction is supported by the supporting portion 37b. The end of the first rotating shaft 40 in the -X direction is supported by a supporting portion (not shown) formed on the lower frame 38 shown in Fig. 23.

[0068] The second rotating shaft 45 is supported by the upper frame 37. As shown in Fig. 22, two supporting portions 37d are formed at an interval along the X-axis direction on the upper frame 37. The second rotating shaft 45 is supported by the two supporting portions 37d. As shown in Fig. 24, an opening 37e is formed in the pivot support portion 37d. The supported portion 45b, which is a portion of the second rotating shaft 45 supported by the pivot support portion 37d, has a shape in which a part of the outer periphery of the shaft is cut out. When the supported portion 45b is inserted into the pivot support portion 37d through the opening 37e, the supported portion 45b can be easily fitted into the pivot support portion 37d by orienting the shaft diameter of the supported portion 45b to be smaller than the opening width of the opening 37e in the Y-axis direction as shown in Fig. 24. Then, by rotating the second rotating shaft 45, the supported portion 45b can be pivotally supported by the pivot support portion 37d. Furthermore, the X-axis direction dimension, i.e., the axial direction dimension, of the supported portion 45b is larger than the X-axis direction dimension of the pivot portion 37d, so that the supported portion 45b, i.e., the second rotating shaft 45, is pivotally supported relative to the pivot portion 37d so as to be slidable in the X-axis direction, i.e., in the axial direction.

[0069] Therefore, depending on the phase of rotation of the second rotating shaft 45, when the state shown in Fig. 24 is reached, there is a risk that the second rotating shaft 45 will slip out of the pivot support portion 37d. Therefore, in this embodiment, a cover member 70 is provided. The cover member 70 is fixed to the upper frame 37 with a screw. The cover member 70 has a cover portion 70a. When the cover member 70 is fixed to the upper frame 37, the cover portion 70a covers at least a portion of the opening 37e. This allows the second rotating shaft 54 ​​to be rotatably held so as not to slip out of the pivot support portion 37d. The cover portion 70a covers a portion of the opening 37e, but may cover the entire opening 37e. Incidentally, such a shaft holding structure may be applied to the rotating shaft 12 and the first rotating shaft 40.

[0070] 6. Attaching and detaching the roller support part Next, attachment and detachment of the roller support portion 11 will be described. When the feed roller 10 needs to be replaced due to wear or deterioration, it is necessary to remove the roller support part 11. However, since the above-mentioned first lever 41 and cam part 47 are engaged with the roller support part 11, it is necessary to release this engagement in order to remove the roller support part 11. The configuration for releasing the engagement between the first lever 41 and the cam part 47 and the roller support part 11 will be described below.

[0071] First, as shown in Fig. 27A, the roller support portion 11 is provided with a supported portion 11f which is a portion that engages with the rotating shaft 12. The supported portion 11f is rotatably supported by a support portion 37f formed on the upper frame 37. An opening 37g is formed in the support portion 37f. The supported portion 11f has a cylindrical shape with a part of the outer periphery cut out. When the supported portion 11f is attached to or detached from the supporting portion 37f through the opening 37g, the supported portion 11f can be fitted to or detached from the supporting portion 37f by orienting the supported portion 11f so that the width of the supported portion 11f is smaller than the width of the opening 37g in the Y-axis direction as shown in FIG. 27C. 27C, it is necessary to release the engagement between the first lever 41 and the cam portion 47 and the roller support portion 11. In order to obtain the state shown in FIG.

[0072] In addition, before attaching or detaching the roller support part 11, the lower tray 50 and the upper tray 60 are removed from the device body 2, and the discharge tray 8 is set to the use state. This is because, when the device body 2 is viewed from below in a plan view, the roller support part 11, the first rotating shaft 40, and the second rotating shaft 45 overlap with the lower tray 50 and the upper tray 60 in the attached state, and the discharge tray 8 in the stored state. Therefore, when attaching or detaching the roller support part 11, the lower tray 50 and the upper tray 60 are removed from the device body 2, and the discharge tray 8 is set to the use state. As a result, the roller support part 11, the first rotating shaft 40, and the second rotating shaft 45 are exposed as shown in FIG. 22 and FIG. 23. When removing the roller support part 11, the device main body 2 may be placed on the support surface upside down with the bottom facing up, but for convenience, the coordinate axes shown in Figures 27A, 27B, and 27C are the same as those in other figures.

[0073] Next, the release of the engagement between the first lever 41 and the roller support portion 11 will be described. The first rotating shaft 40 on which the first lever 41 is provided is provided with an operating part 40a as shown in Fig. 23. The user can easily rotate the first rotating shaft 40 by pinching the operating part 40a. When the first rotating shaft 40 is rotated in the first direction C1 from a state in which the roller support part 11 is in the first retracted position, it is possible to disengage the first contact part 11c from the first lever 41 as shown by the change from Fig. 27A to Fig. 27B. This allows the roller support part 11 to be further rotated in the first direction C1, and the roller support part 11 can be put into the state shown in Fig. 27C in which it is detachable. That is, by rotating, the roller support part 11 can take a disengagement position where the engagement between the rotation shaft 12 and the roller support part 11 can be released in addition to the above-mentioned first feeding position, first retracted position, second feeding position, and second retracted position (FIG. 27C). The disengagement position is a position where the roller support part 11 has further rotated from the first feeding position in the first direction C1.

[0074] Next, the disengagement of the cam portion 47 and the roller support portion 11 will be described. The second rotating shaft 45 on which the cam portion 47 is provided is provided slidable along the X-axis direction, i.e., the axial direction. When the second rotating shaft 45 is slid in the -X direction from a state in which the cam portion 47 and the roller support portion 11 are engaged, the cam portion 47 can be disengaged from the roller support portion 11 in the -X direction as shown in Fig. 25. In Fig. 25, the cam portion 47 before sliding is indicated by reference numeral 47-1 and a two-dot chain line. This allows the engagement between cam portion 47 and roller support portion 11 to be released, and roller support portion 11 can be rotated as shown by the change from the state in Fig. 27A to the state in Fig. 27C. Note that, to change roller support portion 11 from the state in Fig. 27A to the state in Fig. 27C, first the engagement between cam portion 47 and the roller support portion is released, and then the engagement between first lever 41 and the roller support portion is released.

[0075] The second rotating shaft 45 is pressed in the +X direction, i.e., in the direction in which the cam portion 47 engages with the roller support portion 11, by a leaf spring 71 which is an example of a pressing member. Therefore, if the second rotating shaft 45 is released after being slid in the -X direction, the second rotating shaft 45 moves in the +X direction due to the pressing force of the leaf spring 71, and the cam portion 47 returns to its original position.

[0076] The pressing structure of the second rotating shaft 45 by the leaf spring 71 will be further described below. As shown in Figures 25 and 26, the leaf spring 71 is fixed to the upper frame 37 with screws. The leaf spring 71 has an arm 71a extending in the +Y direction, and a pressing portion 71b is provided at the end of the arm 71a. The second rotating shaft 45 is formed with a pressed portion 45a protruding in the radial direction, and the pressed portion 45a is pressed in the +X direction by the pressing portion 71b. Further, a restricting portion 37c is formed on the upper frame 37. A restricted portion 71c is formed on the arm portion 71a of the leaf spring 71. The pressing of the second rotation shaft 45 in the +X direction by the pressing portion 71b is restricted by the restricted portion 71c coming into contact with the restricting portion 37c.

[0077] As described above, the printer 1 or medium feeding device 100 is rotatable about the first rotation shaft 40, and includes a first lever 41 that rotates the roller support part 11 in response to the attachment or detachment of the lower tray. The printer 1 or medium feeding device 100 is rotatable about the second rotation shaft 45, and includes a cam part 47 that rotates the roller support part 11 in response to the attachment or detachment of the upper tray 60. The second rotating shaft 45 is a moving shaft that is movable in the axial direction, and the cam portion 47 is a moving engagement portion provided on the second rotating shaft 45 that is a moving shaft. Cam portion 47, which is a movable engagement portion, can move between an engagement position (reference symbol 47-1 in FIG. 25) where it engages with roller support portion 11 and a release position (reference symbol 47 in FIG. 25) where it releases the engagement with roller support portion 11, as a result of second rotating shaft 45 moving in the axial direction. Printer 1 or medium feeding device 100 is provided with a pressing portion 71b that presses second rotating shaft 45 in the +X direction, which is the direction in which cam portion 47 moves toward the engagement position.

[0078] According to this configuration, the roller support portion 11 can be easily attached and detached by moving the cam portion 47 to the release position. In addition, since the second rotating shaft 45 is pressed in the +X direction, which is the direction in which the cam portion 47 moves toward the engagement position, the cam portion 47 can return to the engagement position by releasing the hand after moving the cam portion 47 to the release position. This makes it even easier to attach and detach the roller support portion 11. In addition, when the cam portion 47 is in the engagement position, the cam portion 47 is less likely to move in the direction toward the release position. As a result, when the cam portion 47 is in the engagement position, it is possible to suppress the occurrence of a malfunction in which the cam portion 47 cannot rotate the roller support portion 11 due to the cam portion 47 unintentionally coming out of the engagement position.

[0079] In this embodiment, in order to attach or detach the roller support part 11, it is necessary to rotate the first rotating shaft 40. However, since the second rotating shaft 45 is configured as described above, the roller support part 11 can be attached or detached without removing the second rotating shaft 45. In this embodiment, the second rotating shaft 45 is the moving shaft and the cam portion 47 is the moving engagement portion, but the first rotating shaft 40 may be the moving shaft and the first lever 41 may be the moving engagement portion. Alternatively, both the first rotating shaft 40 and the second rotating shaft 45 may be the moving shafts and both the first lever 41 and the cam portion 47 may be the moving engagement portions.

[0080] In this embodiment, the restricting portion 37c restricts the pressing of the second rotating shaft 45 by the pressing portion 71b when the cam portion 47 is in the engagement position. This makes it possible to prevent the cam portion 47 from pressing excessively against the roller support portion 11. As a result, it is possible to prevent excessive load from being applied to the roller support portion 11 and the cam portion 47.

[0081] In this embodiment, the rotation of the first rotating shaft 40 releases the engagement between the first lever 41 and the first contact portion 11c, and the movement of the second rotating shaft 45 releases the engagement between the cam portion 47 and the second contact portion 11d, allowing the roller support portion 11 to rotate from the first feeding position to the disengaged position. This makes it possible to avoid interference between the first lever 41 and the cam portion 47 when removing the roller support portion 11. As a result, the roller support portion 11 can be removed with good workability.

[0082] In addition, in this embodiment, the first rotating shaft 40 is provided with the operating portion 40a to which an operating force for rotating the first rotating shaft 40 is applied, so that the first rotating shaft 40 can be easily rotated. As a result, the roller support portion 11 can be attached and detached even more easily.

[0083] In this embodiment, the first rotating shaft 40 and the second rotating shaft 45 are parallel to each other. When viewed in the axial direction of the first rotating shaft 40 and the second rotating shaft 45, the first lever 41 and the cam portion 47 can overlap as shown in Figures 10A and 10B. This allows the device to be made more compact than in a configuration in which the first lever 41 and the cam portion 47 do not overlap when viewed in the axial direction. In this configuration, the first lever 41 and the first contact portion 11c are disengaged by the rotation of the first rotating shaft 40, and the cam portion 47 and the second contact portion 11d are disengaged by the movement of the second rotating shaft 45. This makes it possible to avoid interference between the first lever 41 and the cam portion 47 when removing the roller support portion 11, and allows the roller support portion 11 to be removed with good workability.

[0084] The present invention is not limited to the embodiments and modifications described above, but various modifications are possible within the scope of the invention described in the claims, and it goes without saying that these modifications are also included in the scope of the present invention. [Explanation of symbols]

[0085] 1...inkjet printer, 2...device main body, 3...scanner unit, 4...cover, 5...operation panel, 6...manual feed cover, 7...manual feed tray, 8...output tray, 9...frame material, 9a...receiving section, 9b...bottom surface of receiving section 9a, 10...feed roller, 11...roller support section, 11c...first contact section, 11d...second contact section, 11f...supported section, 11e...opening, 12...rotating shaft, 13...transmitting gear, 14...tooth wheel train, 15...transmitted gear, 16...separating bevel surface, 17... intermediate roller, 18... driven roller, 19... driven roller, 20... driven roller, 21... driven roller, 24... transport drive roller, 25... transport driven roller, 26... application portion, 28... support member, 29... carriage, 30... recording head, 31... discharge drive roller, 32... discharge driven roller, 35... upper guide rail, 36... lower guide rail, 37... upper frame, 37a... shaft support portion, 37b... shaft support portion, 37c... regulation portion, 37d... shaft support portion, 37 e...opening, 37f...support portion, 37g...opening, 38...lower frame, 39...holding means, 40...first rotating shaft, 40a...operating portion, 41...first lever, 42...second lever, 43...slider, 43a...first engaging portion, 43b...second engaging portion, 44...coil spring, 45...second rotating shaft, 45a...pressed portion, 45b...supported portion, 46...cam follower portion, 47...cam portion, 49...tray storage portion, 50...lower tray, 50a...bottom surface, 50d...stopper, 50e...pressing portion, 51A, 51B...edge guide, 52...edge guide, 53...high friction material, 59...cover, 60...upper tray, 60a...bottom surface, 60b...rack portion, 60c...stopper, 60d...tip portion, 60e...recess, 60f...inclined surface, 61A, 61B...edge guide, 62...edge guide, 63...high friction material, 70...covering member, 70a...covering portion, 71...leaf spring, 71a...arm portion, 71b...pressing portion, 71c...regulated portion, 100...medium feeding device, P, P1, P2...medium

Claims

1. a first tray on which a medium is placed; a second tray for placing media thereon and positioned above the first tray; an apparatus main body including the first tray and the second tray in a detachable manner; a feed roller that feeds the media placed on the first tray and the second tray; a roller support portion that supports the feed roller and rotates in a first direction in which the feed roller advances to the first tray and in a second direction in which the feed roller retreats from the first tray, thereby moving the feed roller forward and backward relative to the first tray and the second tray; a first engagement portion that is rotatable about a first rotation axis and rotates the roller support portion in response to attachment / detachment of the first tray; a second engagement portion that is rotatable about a second rotation axis and rotates the roller support portion in response to attachment / detachment of the second tray; Equipped with the roller support portion has a first contact portion that contacts the first engagement portion and a second contact portion that contacts the second engagement portion, At least one of the first rotation shaft and the second rotation shaft is a moving shaft that is movable in an axial direction, an engaging portion provided on the moving shaft, wherein at least one of the first engaging portion and the second engaging portion is a moving engaging portion, and the moving engaging portion is movable between an engaging position where it engages with the roller support portion and a releasing position where it releases the engagement with the roller support portion by moving the moving shaft in the axial direction; The moving engagement portion includes a pressing portion that presses the moving shaft in a direction toward the engagement position. A medium feeding device comprising:

2. 2. The medium feeding device according to claim 1, a restricting portion that restricts the pressing of the moving shaft by the pressing portion when the moving engagement portion is in the engagement position, A medium feeding device comprising:

3. 2. The medium feeding device according to claim 1, The second engagement portion is the moving engagement portion, The roller support portion rotates to a first feeding position where the feeding roller can feed the medium placed on the first tray; a first retracted position, which is a position rotated in the second direction from the first feeding position and retracts from the first tray by being supported by the first engagement portion via the first contact portion; a disengagement position that is a position rotated in the first direction from the first feeding position and is capable of disengaging the engagement between the rotation shaft of the roller support portion and the roller support portion; and the first engaging portion and the first abutment portion are disengaged by rotation of the first rotating shaft, and the second engaging portion and the second abutment portion are disengaged by movement of the second rotating shaft, thereby allowing the roller support portion to rotate from the first feeding position to the disengaged position. A medium feeding device comprising:

4. 4. The medium feeding device according to claim 3, An operating unit to which an operating force for rotating the first rotating shaft is applied is provided on the first rotating shaft. A medium feeding device comprising:

5. 4. The medium feeding device according to claim 3, the first rotation axis and the second rotation axis are parallel to each other; When viewed in an axial direction of the first rotation shaft and the second rotation shaft, the first engagement portion and the second engagement portion are capable of overlapping with each other. A medium feeding device comprising:

6. 2. The medium feeding device according to claim 1, At least one of the first rotating shaft and the second rotating shaft is rotatably held by a shaft support part having an opening and a cover part covering at least a part of the opening. A medium feeding device comprising:

7. 4. The medium feeding device according to claim 3, The roller support portion is a second feeding position where the feeding roller can feed the medium placed on the second tray; a second retracted position, which is a position rotated in the second direction from the second feeding position and is retracted from the second tray by being supported by the second engagement portion via the second contact portion; and The first retracted position is a position where the roller support portion is rotated in the first direction from the second retracted position. A medium feeding device comprising:

8. The medium feeding device according to any one of claims 1 to 7; a recording unit that records on the medium fed by the medium feeding device; A recording device comprising:

9. 9. The recording apparatus according to claim 8, a discharge tray on which the medium recorded on and discharged by the recording unit is stacked, The discharge tray is displaceable between a use state and a storage state, When the first tray and the second tray are removed and the discharge tray is in the use state, the roller support portion and the first rotation shaft and the second rotation shaft are exposed. A recording apparatus comprising:

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