JP2013209168A - Tray and image recording apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tray capable of reducing time and effort for housing a sheet while properly maintaining operability of a side guide.SOLUTION: A paper feed tray 21 includes: a bottom plate 75 having a mounting face 76 for mounting supplied recording paper; a side guide 77 having inside faces 78 sliding in a horizontal direction 9 and abutting on right and left ends of the mounted recording paper; a rear guide 80 attached to the right side guide 77, changing an attitude between a protruded attitude (attitude of Fig.4) where the rear guide protrudes to the left side beyond the inside face 78 and a retreated attitude where the rear guide retreats to the same position as the inside face 78 in regard to the horizontal direction 9, and abutting on a front end of the recording paper mounted in the protruding attitude; and a guide groove 99 provided in the bottom plate 75, changing the attitude of the rear guide 80 from the retreated attitude to the protruded attitude along with sliding of the right side guide 77 to the left side, and changing the attitude of the rear guide 80 from the protruded attitude to the retreated attitude along with sliding of the right side guide 77 to the right side.

Description

  The present invention relates to a tray on which a sheet can be placed, and an image recording apparatus including the tray.

  There is an apparatus capable of conveying a sheet inside. An example of the apparatus is an image recording apparatus such as a copying machine or a printer. Some image recording apparatuses include a tray that can store sheets in a stacked state and can move forward and backward with respect to the image recording apparatus. The tray is provided with a side guide that is slid in the width direction in order to align the side edges in the width direction of the stacked sheets. Further, the tray is provided with a rear guide that is slid in the transport direction in order to align the rear ends of the stacked sheets in the transport direction. The side guide guides the side edge in the width direction of the sheet so that the sheet is conveyed along the conveyance direction. The rear guide guides the rear end of the sheet so that the sheet is within a predetermined area in the tray.

  Conventionally, since the side guide and the rear guide are individually slid, it takes time to store the sheet in the tray. As an example of a tray for solving such a problem, Patent Document 1 includes an end fence guide groove 7 that guides the end fence 3 in the conveyance direction. A paper feed cassette (corresponding to a tray) is disclosed in which the fence 3 moves in the vertical direction along the end fence guide groove 7 to regulate the vertical position of the paper. In the paper feed cassette, the end fence 3 is also moved by moving the side fence 2, so that it is possible to reduce time and effort required to store paper in the paper feed cassette.

JP-A-8-119467

  However, in the paper feed cassette according to Patent Document 1, when the side fence 2 moves in the horizontal direction, the end fence 3 moves in the vertical direction. That is, the moving directions of the side fence 2 and the end fence 3 are different. Therefore, the vertical movement of the end fence 3 acts as a resistance against the horizontal movement of the side fence 2. As a result, a large force is required to move the side fence 2 in the lateral direction. That is, the operability of the side fence 2 is deteriorated.

  The present invention has been made in view of the above problems, and its object is to maintain the operability of the side guide and to change the posture of the rear guide in accordance with the slide of the side guide, thereby accommodating the seat. The object is to provide a tray capable of reducing labor.

(1) A tray according to the present invention has a bottom plate having a placement portion on which a sheet to be fed is placed, and slides in the width direction perpendicular to the sheet feeding direction with respect to the bottom plate. A side guide having an abutting portion that abuts against the end in the width direction of the sheet, a protruding posture that is attached to the side guide and projects to the side where the sheet is placed from the abutting portion, and The posture is changed to the retracted position where the seat is retracted to the same position in the width direction or the side opposite to the side on which the sheet is placed with respect to the contact portion, and is placed on the placement portion in the protruding posture. A rear guide that comes into contact with the upstream end of the sheet in the feeding direction and a bottom plate, and the rear guide is moved from the retracted position to the protruding position as the side guide slides toward the sheet placement side. Change the above size With the slide in the guide seat placement side opposite, and a posture change unit for changing the posture to the retracted position the rear guide from the protruding position.

  In this configuration, the rear guide is provided on the side guide. Therefore, when the side guide slides in the width direction, the rear guide also slides in the width direction. Thereby, the force required when sliding the side guide in the width direction can be reduced.

  In this configuration, the posture changing unit changes the posture of the rear guide to the protruding posture as the side guide slides in the width direction. The rear guide in the protruding posture can align the upstream end in the feeding direction of the sheet placed on the placement unit.

(2) The side guide includes a support portion that rotatably supports the rear guide about a rotation axis along a direction orthogonal to the feeding direction and the width direction. The rear guide changes its posture between the protruding posture and the retracted posture by rotating.

  By configuring the rear guide to be rotatable, it is possible to easily realize a mechanism in which the posture of the rear guide changes as the side guide slides.

(3) The rear guide in the retracted position has a rotation tip of the rear guide positioned closer to the seat placement side than the rotation shaft in the width direction.

  In many trays having the above configuration (2), the rear guide rotates toward the sheet placement side when the posture changes from the retracted posture to the protruding posture. According to this configuration, the rear guide in the retracted posture is in a state in which the rotation tip is slightly closer to the seat placement side, that is, the protruding posture side than the rotation shaft. Therefore, when the rear guide changes its posture from the retracted posture to the protruding posture, the rear guide can be smoothly moved from the retracted posture. As a result, the force required for sliding the side guide in the width direction can be reduced.

(4) The rear guide changes its posture from the retracted posture to the protruding posture by rotating toward the seat placement side, and is opposite to the rotation when changing the posture from the retracted posture to the protruding posture. The posture is changed from the protruding posture to the retracted posture by pivoting to the right. In the rear guide in the retracted position, the rotation tip of the rear guide is located downstream of the rotation shaft in the feeding direction.

  In this configuration, the rear guide in the protruding posture does not rotate so that the rotation tip moves to the downstream side in the feeding direction. Therefore, in this configuration, when the position of the upstream end in the sheet feeding direction is aligned by the rear guide, the rear guide does not move, so that the position can be easily aligned. Further, when the recording paper is placed on the placement surface from the downstream side in the feeding direction, the rear guide is prevented from changing its posture.

(5) A biasing member that biases the rear guide to the protruding posture is further provided. The posture changing portion intersects with the placement portion, contacts the rear guide as the side guide moves, and guides the rear guide from the protruding posture to the retracted posture against the biasing member. A guide part is provided.

  In this configuration, the rear guide can be maintained in the protruding posture and the retracted posture by being biased by the biasing member and pressed against the guide portion.

(6) The rear guide includes a sliding portion that slides relative to the guide portion. The guide portion is formed continuously in the width direction, and includes a first guide portion that guides the sliding portion of the rear guide in the protruding posture, and a downstream side in the feeding direction from the first guide portion. A second guide portion that is formed and guides the sliding portion of the rear guide in the retracted position; and a third guide portion that connects the first guide portion and the second guide portion to guide the rear guide. .

  In this configuration, the rear guide is changed between the protruding position and the retracted position by being guided between the first guide part and the second guide part while being urged by the urging member and pressed against the guide part. be able to.

(7) The posture changing portion includes a separation portion that is continuous with the first guide portion and allows the posture of the rear guide to be changed from the guide portion to the retracted posture.

  According to this configuration, the rear guide in the protruding posture can move to the separation portion against the biasing force of the biasing member. Thereby, the rear guide can also take a retracted posture at the same position as in the protruding posture. As a result, the tray of the present invention can place a plurality of types of sheets having the same width in the width direction and different lengths in the feeding direction.

(8) The posture changing portion includes a guide groove formed in the bottom plate. The rear guide includes a sliding portion that slides along the guide groove. The guide groove extends along the width direction and guides the sliding portion of the rear guide in the protruding posture, and is formed on the downstream side of the feeding direction with respect to the first guide groove. The second guide groove for guiding the sliding portion of the rear guide in the retracted position, and the third guide groove for connecting the first guide groove and the second guide groove to guide the sliding portion.

  In this configuration, the rear guide can be changed into a protruding posture and a retracted posture by being guided along the guide groove.

(9) The posture changing unit includes a posture maintaining unit that maintains the rear guide in the protruding posture over a certain amount of movement range of the side guide.

  In this configuration, the rear guide can be maintained in the protruding posture even when there is an error due to a tolerance in the length in the width direction of the sheet placed on the tray.

(10) A plurality of the rear guides are provided in the feeding direction. The posture changing section is provided with the rear guide provided on the upstream side in the feeding direction on the downstream side in the feeding direction in the process of sliding the side guide toward the side on which the seat is placed. Further, the posture is changed from the retracted posture to the protruding posture before the rear guide.

  The tray of this configuration can place a plurality of types of sheets.

(11) The side guides are formed as a pair separated in the width direction. The rear guide is provided on at least one of the pair of side guides.

  According to this configuration, the tray can correspond to the positioning at the center in the width direction of the sheet.

(12) The rear guide is provided on both of the pair of side guides. The position in the feeding direction of the rear guide provided on one side of the side guide is different from the position in the feeding direction of the rear guide provided on the other side of the side guide.

  If there is no significant difference in the length of the sheet feeding direction in each of a plurality of types of sizes, there is a possibility that the rear guides come into contact with each other when the plurality of rear guides are arranged on one side guide. However, in this configuration, since the rear guides are arranged on different side guides, the contact of the rear guides as described above can be prevented.

(13) The side guide includes an operation unit that is gripped to slide the side guide. The tray according to the present invention further includes a cover portion that covers the bottom plate, the side guide, and the rear guide on the upstream side in the feeding direction from the operation portion.

  In this configuration, since the operation unit is not covered by the cover unit, the user can easily operate the operation unit. Thereby, a side guide can be easily slid. In this configuration, since the rear guide is moved along with the sliding of the side guide, the rear guide can be slid even if the rear guide is covered by the cover portion.

(14) The tray according to the present invention includes a bottom plate on which a sheet to be fed is placed, a first position in the width direction orthogonal to the sheet feeding direction with respect to the bottom plate, and the first position in the width direction. A side guide that slides to a second position, which is the side on which the sheet is placed, from the first position, and has a contact portion that comes into contact with the end in the width direction of the placed sheet; and is attached to the side guide A rear guide that abuts the upstream end of the seat in the feeding direction; and a bottom plate that abuts the rear guide as the side guide slides to the first position. The position of the rear guide is changed to the retracted position of retracting to the same position in the width direction as the contact portion or to the opposite side of the contact portion from the side where the seat is placed, and the side guide is moved to the second position. And a posture changing portion that changes the posture of the rear guide to a protruding posture in which the rear guide protrudes to the side where the seat is placed with respect to the contact portion. Good.

(15) The present invention relates to the trays (1) to (14), a mounting portion on which the tray is mounted, and a sheet mounted on the mounting portion on the tray mounted on the mounting portion. It can also be understood as an image recording apparatus that includes a feeding unit that feeds in a feeding direction and a recording unit that records an image on a sheet fed by the feeding unit.

(16) The tray according to the present invention further includes a guide member that abuts on the sheet fed in the feeding direction and guides the sheet. The tray is provided upright from a downstream end of the bottom plate in the feeding direction, and includes a stopper that stops the movement of the sheet placed on the placement unit in the feeding direction. The guide member has a position in the width direction different from that of the stopper in a state where the tray is mounted on the mounting portion, and is positioned closer to the rear guide than the stopper.

  In the case of this configuration, the downstream end in the feeding direction of the sheet placed on the placement unit is positioned by the guide member, and the upstream end in the feeding direction of the sheet is positioned by the rear guide. However, in this configuration, since the guide member is provided in the image recording apparatus, the downstream end in the sheet feeding direction cannot be positioned when the tray is removed from the mounting portion of the image recording apparatus. However, in this configuration, the posture of the rear guide changes as the side guide slides. For this reason, in this configuration, positioning in the width direction of the sheet is performed by movement of the side guide, so that the upstream end in the sheet feeding direction can be positioned by the rear guide. As a result, the downstream end of the sheet in the feeding direction is also positioned. That is, even if the guide member is provided in the image recording apparatus instead of the tray as in this configuration, the sheet placed on the tray can be positioned.

  In the present invention, the force required to slide the side guide in the width direction can be reduced. Further, the posture of the rear guide can be changed as the side guide slides. Therefore, in the present invention, it is possible to reduce the trouble of storing the sheet while maintaining good operability of the side guide.

FIG. 1 is a perspective view of the multifunction machine 10. FIG. 2 is a longitudinal sectional view schematically showing the internal structure of the printer unit 11. FIG. 3 is a perspective view of the paper feed tray 21 with the rear guide 80 in the retracted position. FIG. 4 is a perspective view of the paper feed tray 21 with the rear guide 80 in a protruding posture. 5A and 5B are plan views of the paper feed tray 21. FIG. 5A shows a state in which the rear guide 80 is in the retracted posture, and FIG. 5B shows a state in which the rear guide 80 is in the protruding posture. Yes. 6A and 6B are diagrams showing the main part of the paper feed tray 21 in the first modification. FIG. 6A is a plan view of the paper feed tray 21 and FIG. A perspective view of the moving shaft portion is shown, (C) shows a sectional view taken along the line CC of (B), and (D) shows the first surface in a state where the rear guide 80 is in a protruding posture. A plan view around 95 is shown, and (E) shows a plan view for explaining the posture change of the rear guide 80 from the protruding posture to the retracted posture in (D). FIG. 7 is a plan view showing the main part of the paper feed tray 21 in the second modification. FIG. 8 is a diagram illustrating a main part of the paper feed tray 21 in the third and fourth modifications. FIG. 8A is a perspective view of the paper feed tray 21 in a state where the rear guides 80A and 80B in the third modification are in a retracted posture. (B) is a perspective view of the sheet feeding tray 21 in a state in which the rear guide 80A in the modified example 3 is in the protruding posture and the rear guide 80B is in the retracted posture, and (C) is in the deformed state. A perspective view of the paper feed tray 21 in the state in which the rear guides 80A and 80B in the third embodiment are in the protruding posture is shown, and FIG. 4D shows a plan view of the paper feed tray 21 in the fourth modification. FIG. 9 is a plan view of the paper feed tray 21 covered with the paper discharge tray 23. 10A and 10B are views showing the paper feed tray 21 and the outer guide member 51. FIG. 10A is a perspective view, and FIG. 10B is a longitudinal sectional view.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings as appropriate. The embodiment described below is merely an example of the present invention, and it is needless to say that the embodiment of the present invention can be changed as appropriate without departing from the gist of the present invention. In the following description, the vertical direction 7 is defined with reference to a state in which the multifunction machine 10 is installed (the state of FIG. 1), and the side where the opening 13 is provided is the front side (front side). 8 is defined, and a left-right direction 9 is defined when the multifunction machine 10 is viewed from the front side (front side). For the paper feed tray 21, a vertical direction 7, a front-rear direction 8, and a left-right direction 9 are defined with reference to a state in which the multi-function peripheral 10 is mounted (the state in FIG. 1).

[Schematic configuration of MFP 10]
As shown in FIG. 1, the multifunction machine 10 is provided with a scanner unit 12 at the top and an ink jet recording type printer unit 11 (an example of the image recording apparatus of the present invention) at the bottom. The multifunction machine 10 has various functions such as a facsimile function and a print function. The presence or absence of functions other than the print function is arbitrary.

  An opening 13 is formed on the front side of the printer unit 11. The printer unit 11 includes a paper feed tray 21 (an example of the tray of the present invention) and a recording unit 40 (see FIG. 2). The printer unit 11 can attach and remove the paper feed tray 21 in the front-rear direction 8 through the opening 13. That is, the paper feed tray 21 is attached to the opening 13 of the printer unit 11. The opening 13 is an example of the mounting portion of the present invention. The paper feed tray 21 may be configured to be able to be pulled out from the printer unit 11 halfway, in other words, may not be completely removed from the printer unit 11.

  As shown in FIG. 2, the recording paper 50 (an example of the sheet of the present invention) is placed on the paper feed tray 21. The recording paper 50 placed on the paper feed tray 21 is supplied from the paper feed tray 21 to the transport path 18 described later by a supply unit 28 (an example of a feed unit of the present invention) described later. The supplied recording paper 50 is discharged onto a paper discharge tray 23 (an example of a cover portion of the present invention) constituting the upper surface of the paper feed tray 21 after an image is recorded by the recording unit 40. The paper discharge tray 23 covers the upper side and the front side of the paper feed tray 21 and slides integrally with the paper feed tray 21. The paper feed tray 21 and the paper discharge tray 23 will be described in detail later.

  As shown in FIG. 2, a supply unit 28 is provided on the upper side of the paper feed tray 21 that is attached to the opening 13 (see FIG. 1) of the printer unit 11. The supply unit 28 includes a paper feed roller 25, an arm 26, and a shaft 27. The paper feed roller 25 is rotatably provided on the tip side of the arm 26. The arm 26 is rotatably provided on a shaft 27 supported by the frame of the printer unit 11. The arm 26 is urged to rotate toward the paper feed tray 21 by its own weight or an elastic force of a spring or the like. The paper feed roller 25 rotates to pick up the recording paper 50 placed on the paper feed tray 21 and feed it to the transport path 18. When the paper feed tray 21 is inserted into and removed from the printer unit 11, the supply unit 28 contacts the paper feed tray 21 and rotates upward. Thus, the insertion / extraction is performed without being disturbed by the supply unit 28.

[Conveyance path 18]
As shown in FIG. 2, a conveyance path 18 is formed in the printer unit 11. The conveyance path 18 is bent upward from the rear end of the paper feed tray 21 and toward the front side of the multifunction machine 10, passes through the lower side of the recording unit 40, and communicates with the paper discharge tray 23.

  The conveyance path 18 is formed by the outer guide member 51 (an example of the guide member of the present invention) and the inner guide member 52 at a position where the recording unit 40 is not disposed. The outer guide member 51 and the inner guide member 52 abut the recording sheet 50 supplied to the conveyance path 18 by the supply unit 28, thereby guiding the recording sheet 18 along the conveyance path 18.

  The lower end of the outer guide member 51, in other words, the end closest to the paper feed tray 21, extends to the lower side of the recording paper 50 placed on the paper feed tray 21. Moreover, the lower end part of the outer side guide member 51 inclines so that it may be located in a rear side, so that it is an upper position. As a result, the downstream end of the recording paper 50 picked up by the supply unit 28 in the feeding direction (rearward in the front-rear direction 8) abuts on the lower end portion of the outer guide member 51 and goes to the conveyance path 18 along the lower end portion. Be fed.

  Further, as shown in FIG. 10, a recess 53 that is recessed rearward is formed on the front side of the lower end portion of the outer guide member 51. At least one recess 53 is formed in the left-right direction 9 at an interval (two in this embodiment). In a state where the paper feed tray 21 is mounted in the opening 13 of the printer unit 11, a stopper 24 of the paper feed tray 21 described later is inserted into the recess 53. The stopper 24 inserted into the concave portion 53 is positioned on the rear side of the outer guide member 51, specifically, on the rear side of at least the front surface (guide surface for the recording paper 50) at the lower end portion of the outer guide member 51. In other words, the outer guide member 51 is positioned in front of the stopper 24, that is, on the rear guide 80 side.

  That is, the portion of the recess 53 formed in the outer guide member 51 does not contact the recording paper 50 fed in the feeding direction. Therefore, the concave portion 53 is not an example of the guide member of the present invention. As described above, the outer guide member 51 is different from the stopper 24 in the left-right direction 9.

  A notch may be provided instead of the recess 53 at a position corresponding to the front stopper 24 at the lower end of the outer guide member 51.

  The conveyance path 18 is formed by the recording unit 40 and the platen 43 at the position where the recording unit 40 is disposed. The platen 43 is a member that supports the recording paper 50.

[Recording unit 40]
The recording unit 40 includes a carriage 41 that mounts a recording head 42 and reciprocates in the main scanning direction (direction perpendicular to the paper surface of FIG. 2). Ink is supplied to the recording head 42 from an ink cartridge (not shown). The recording head 42 ejects each ink as a minute ink droplet from a nozzle provided on the lower surface thereof. As the carriage 41 reciprocates in the main scanning direction and ink droplets are ejected from the recording head 42, an image is recorded on the recording paper 50 supported by the platen 43.

[Conveying roller pair 59 and discharging roller pair 64]
As shown in FIG. 2, a conveyance roller pair 59 is provided on the rear side of the recording unit 40. The conveyance roller pair 59 includes a conveyance roller 60 and a pinch roller 61 that are in contact with each other. The conveyance roller 60 rotates upon receiving a driving force from a conveyance motor (not shown). Accordingly, the conveyance roller pair 59 sandwiches the recording paper 50 and conveys it toward the recording unit 40.

  A discharge roller pair 64 is provided in front of the recording unit 40. The discharge roller pair 64 includes a discharge roller 62 and a spur 63 that are in contact with each other. The paper discharge roller 62 rotates in response to the driving force from the transport motor. Thus, the discharge roller pair 64 sandwiches the recording paper 50 and conveys it toward the paper discharge tray 23.

[Paper Tray 21]
As shown in FIG. 2, when the paper feed tray 21 is mounted in the opening 13 of the printer unit 11, the recording paper 50 accommodated in the paper feed tray 21 can be supplied to the transport path 18. When the paper feed tray 21 is removed from the opening 13 of the printer unit 11, the recording paper 50 can be replenished to the paper feed tray 21.

  As shown in FIGS. 3 to 5, the sheet feeding tray 21 is generally formed in a rectangular parallelepiped box shape whose upper side is open and whose length in the vertical direction 7 is shorter than the lengths in the horizontal direction 9 and the longitudinal direction 8. Yes. The paper feed tray 21 includes a bottom plate 75 having a placement surface 76 (an example of a placement portion of the present invention) on which the recording paper 50 is stacked and placed, and a stopper 24 erected from the rear end of the bottom plate 75. The side plate 81 erected from both ends in the left-right direction 9 (an example of the width direction of the present invention) of the bottom plate 75, the front plate 83 erected from the front end of the bottom plate 75, and the paper discharge tray 23 (FIG. 9). Reference).

  The side plate 81 extends in the front-rear direction 8. The front plate 83 extends in the left-right direction 9. At least one (24 in the present embodiment) of the stoppers 24 is arranged at intervals in the left-right direction 9. The position of the stopper 24 in the left-right direction 9 is a position within the placement range of all the sizes of the recording paper 50 that is set so as to be placed on the placement surface 76 in the multifunction machine 10. Thus, in a state where the paper feed tray 21 is removed from the opening 13 of the printer unit 11, the stopper 24 moves to the side on which the stopper 24 of the recording paper 50 placed on the placement surface 76 is provided. Stop. As a result, the recording paper 50 can be prevented from dropping from the paper feed tray 21.

  Further, the position of the stopper 24 in the left-right direction 9 is the same position as the left-right direction 9 of the recess 53 formed in the outer guide member 51. Accordingly, as described above, the stopper 24 is inserted into the recess 53 in a state where the paper feed tray 21 is mounted in the opening 13 of the printer unit 11.

[Side guide 77]
As shown in FIGS. 3 to 5, a pair of side guides 77 are attached to the mounting surface 76 of the bottom plate 75 so as to be slidable in the left-right direction 9. The pair of side guides 77 are plate-like members erected upward from the placement surface 76 and extend along the front-rear direction 8. As shown in FIG. 9, the front side of the pair of side guides 77 is covered with the paper discharge tray 23. The pair of side guides 77 are provided apart from each other from the center in the left-right direction 9 of the bottom plate 75 to the right side and the left side. The paper discharge tray 23 is for placing the recorded recording paper 50 and covers a part of the placement surface 76.

  The pair of side guides 77 is configured to be slidable in the left-right direction 9 with respect to the bottom plate 75. The pair of side guides 77 are connected by a known interlocking mechanism. For example, the pair of side guides 77 are connected by an interlocking mechanism using a rack gear and a pinion gear (not shown). Thus, when one side guide 77 is slid, the other side guide 77 is slid in the opposite direction in conjunction with it. The pair of side guides 77 slide in the left-right direction 9 between the first position shown in FIG. 3 and the second position shown in FIG. The second position is a position on the inner side in the left-right direction 9 relative to the first position, that is, a position on the side where the recording paper 50 is placed in the left-right direction 9.

  When the side guide 77 is slid in the left-right direction 9 in a state where the recording paper 50 is stored in the paper feed tray 21, the inner side surface 78 (an example of the contact portion of the present invention) of the side guide 77 is Abuts on the left and right ends. Further, the inner side surface 78 of the side guide 77 guides the left and right ends of the recording paper 50 when paper is fed or when the recording paper 50 is replenished. The inner surface 78 may not be planar as long as it can contact the recording paper 50.

  In the present embodiment, a configuration in which the side guides 77 are a pair will be described. However, the side guides 77 may be one instead of a pair. In this case, one end of the recording paper 50 in the left-right direction 9 is in contact with the side guide 77, and the other end of the recording paper 50 in the left-right direction 9 is in contact with the side plate 81, thereby The end is restricted to a position corresponding to the size.

[Operation unit 101]
As shown in FIGS. 3 to 5, the right side guide 77 of the pair of side guides 77 is provided with an operation unit 101. The operation unit 101 is provided behind the paper discharge tray 23 in the front-rear direction 8. The operation unit 101 is integral with the side guide 77 at the lower part, but is separated from the side guide 77 at the upper part. Thereby, the operation part 101 can be rotated by elastic deformation centering on the lower part.

  A lock portion (not shown) is provided on the lower surface of the operation portion 101 (the back side of the portion indicated by reference numeral 54 in FIG. 3). The lock portion is, for example, a protrusion that protrudes downward from the lower surface toward the placement surface 76. In a state where the user does not hold the operation unit 101, the lock unit is engaged with the groove 79 formed on the placement surface 76. Thereby, the slide of the side guide 77 is locked. On the other hand, when the user grips the operation unit 101 to slide the side guide 77 and rotates the upper part of the operation unit 101 inward in the left-right direction 9 by elastic deformation, the lock unit moves substantially upward. Is done. As a result, the lock portion is separated from the groove 79. As a result, the side guide 77 can slide in the left-right direction 9.

  In the present embodiment, the configuration in which the operation unit 101 is provided on the right side guide 77 of the pair of side guides 77 is described. However, the operation unit 101 is provided on the left side guide 77. Alternatively, they may be provided on the side guides 77 on both sides.

[Rear guide 80]
As shown in FIGS. 3 to 5, a rear guide 80 is attached to the right side guide 77 of the pair of side guides 77. Specifically, an opening 55 (see FIG. 4) penetrating a part of the right side guide 77 is formed, and a rear guide 80 is disposed so as to close the opening 55 (see FIG. 3). In the present embodiment, the rear guide 80 is attached to the right side guide 77 at a position where the rear guide 80 is covered by the paper discharge tray 23, that is, at the front side of the paper feed tray 21. However, the rear guide 80 may be attached to the right side guide 77 at a position where the rear guide 80 is not covered by the paper discharge tray 23. The rear guide 80 is arranged in accordance with the size of the recording paper 50 placed on the placement surface 76.

  The rear guide 80 is a thin plate-shaped member. The rear guide 80 can change its posture. In the present embodiment, the rear guide 80 is attached to the side guide 77 so as to be rotatable about the vertical direction 7 as an axial direction. That is, in the present embodiment, the rear guide 80 changes its posture by rotating.

  This will be described in detail below. As shown in FIGS. 3 and 4, in the present embodiment, among the surfaces forming the opening 55 of the right side guide 77, the front end portions of the top surface and the bottom surface have holes 84 (of the support portion of the present invention). An example) is formed. In addition, the rear guide 80 is provided with a shaft protrusion 82 that constitutes a rotation shaft of the rear guide 80. The position of the shaft protrusion 82 is a position corresponding to the hole 84 at the front end portions of the upper surface and the lower surface of the rear guide 80 in a state where the rear guide 80 is attached to the right side guide 77. The size of the shaft protrusion 82 is slightly smaller than the hole 84. The rear guide 80 is attached to the side guide 77 by inserting the shaft projection 82 into the hole 84.

  As a result, the rear guide 80 rotates in the direction of the arrow 73 and the direction of the arrow 74 in FIG. 5A around the rotation axis located at the front end of the rear guide 80 and along the vertical direction 7. As described above, the hole 84 formed in the right side guide 77 supports the rear guide 80 so as to be rotatable about the rotation axis along the vertical direction 7.

  Note that the configuration in which the side guide 77 rotatably supports the rear guide 80 is not limited to the configuration described above. For example, the rear guide 80 may be rotatably supported by the side guide 77 by forming a protrusion on the side guide 77 and forming a hole at a position corresponding to the protrusion on the rear guide 80. In this case, the said protrusion is an example of the support part of this invention.

  The rear guide 80 rotates between the retracted posture shown in FIG. 3 and the protruding posture shown in FIG. As shown in FIG. 3, in the retracted position, the turning tip of the rear guide 80 retracts to the side guide 77 side on the right side of the protruding position described later. In the retracted position, the position of the inner surface 85 of the rear guide 80 in the left-right direction 9 is the same position as the inner surface 78 of the right side guide 77. In the retracted posture, the position of the inner surface 85 in the left-right direction 9 may be on the right side of the inner surface 78, that is, on the opposite side of the side on which the recording paper 50 is placed.

  As described above, the pivot shaft of the rear guide 80 is formed at the front end portion of the rear guide 80 in the retracted position. That is, as shown in FIG. 3, in the present embodiment, the rear guide 80 in the retracted posture has the rotation tip at the rear side and the rotation axis at the front side. In other words, the rear guide 80 in the retracted position is positioned on the downstream side in the feeding direction of the recording paper 50 with respect to the rotation shaft. The rear guide 80 may have a configuration in which the rotation tip is provided in front of the rotation shaft.

  On the other hand, as shown in FIG. 4, in the projecting posture, the rear guide 80 projects to the left side of the right side guide 77, that is, the side on which the recording paper 50 is placed. When the rear guide 80 is in the protruding posture, the outer surface 86 (see FIG. 5B) on the back side of the inner surface 85 of the rear guide 80 is the front end of the recording paper 50 placed on the placement surface 76 of the bottom plate 75, that is, the recording paper 50. It contacts the upstream end of the feed direction. The outer surface 86 of the rear guide 80 in this projecting posture has a planar shape perpendicular to the feeding direction.

  In the present embodiment, when the long side of the L-size recording paper 50 is placed in the feeding direction, the outer surface 86 of the rear guide 80 in the protruding posture can guide the recording paper 50. . In other words, the position of the rear guide 80 is set so that the distance from the outer surface 86 of the rear guide 80 in the protruding position to the rear end of the placement surface 76 corresponds to the length of the long side of the L-size recording paper 50. Has been.

  In the present embodiment, the rear guide 80 changes its posture from the retracted posture to the protruding posture by rotating in the direction of the arrow 73 (see FIG. 5A), that is, the side on which the recording paper 50 is placed. . Further, the rear guide 80 changes its posture from the protruding posture to the retracted posture by rotating in the direction of the arrow 74 (see FIG. 5A), that is, in the direction opposite to the arrow 73.

  As shown in FIG. 3, the lower surface of the rear guide 80 is provided with an engaging protrusion 87 (an example of a sliding portion of the present invention) that protrudes downward and engages a guide groove 99 described later. Yes.

  In the present embodiment, the configuration in which the rear guide 80 is provided in the right side guide 77 is described. However, the rear guide 80 may be provided in the left side guide 77 or may be provided in the side guides 77 on both sides. It may be provided. That is, the rear guide 80 may be provided on at least one of the pair of side guides 77.

[Guide groove 99]
As shown in FIGS. 3 to 5, the bottom plate 75 is formed with a guide groove 99 (an example of the posture changing portion of the present invention and an example of the guide groove of the present invention). The guide groove 99 is formed along the left-right direction 9 on the right side and the rear side (downstream in the feeding direction of the recording paper 50) of the first guide groove 88 formed along the left-right direction 9 and the first guide groove 88. And a third guide groove 90 that connects the right end of the first guide groove 88 and the left end of the second guide groove 89. The third guide groove 90 is formed along an oblique direction with respect to the left-right direction 9 so as to be positioned on the front side as it is on the left side. The first guide groove 88, the second guide groove 89, and the third guide groove 90 have a shape in which grooves recessed from the placement surface 76 of the bottom plate 75 are continuous. In the present embodiment, the second guide groove 89 is an engagement protrusion 87 when the side guide 77 is located at a position corresponding to the size of the postcard size recording paper 50 that is larger than the L plate in the left-right direction 9. It extends to the position.

  The width of the guide groove 99 is slightly larger than the engagement protrusion 87 protruding from the lower surface of the rear guide 80. An engaging protrusion 87 is inserted into the guide groove 99. As a result, when the right side guide 77 is moved in the left-right direction 9, the engagement protrusion 87 slides along the guide groove 99. That is, the guide groove 99 guides the engagement protrusion 87. Then, the rear guide 80 rotates as the engaging protrusion 87 slides along the guide groove 99.

  This will be described in detail below. In a state where the right side guide 77 is located at the first position (see FIG. 3), the engagement protrusion 87 is inserted into the right end portion of the second guide groove 89. At this time, the rear guide 80 is in the retracted posture.

  When the right side guide 77 is slid in the direction from the first position to the second position, that is, in the left direction, the engagement protrusion 87 slides along the second guide groove 89. Also at this time, the rear guide 80 maintains the retracted posture. That is, the second guide groove 89 guides the engaging protrusion 87 of the rear guide 80 in the retracted position. Therefore, when the side guide 77 is located at a position corresponding to the postcard size larger than the L size and the recording paper 50 having a size larger than the postcard size, the rear guide 80 remains in the retracted posture.

  When the right side guide 77 is further slid leftward, the engaging protrusion 87 passes through the second guide groove 89 and is slid along the third guide groove 90. As described above, the third guide groove 90 is a groove formed along an oblique direction. For this reason, the engaging member 87 slides along the third guide groove 90 while contacting the front side surface of the third guide groove 90. As a result, the rear guide 80 is rotated in the direction of the arrow 73 (see FIG. 5A). As described above, the third guide groove 90 guides the engaging protrusion 87 while coming into contact with the engaging protrusion 87 of the rear guide 80 as the right side guide 77 slides to the second position. That is, when the position of the side guide 77 moves to the center side in the left-right direction 9 from the position corresponding to the postcard-sized recording paper 50, the rear guide 80 gradually rotates, and the posture changes from the retracted posture toward the protruding posture. To do.

  When the right side guide 77 is further slid leftward and reaches the second position (see FIG. 4), the engaging protrusion 87 passes through the third guide groove 90 and is slid along the first guide groove 88. The At this time, the rear guide 80 is in a protruding posture. That is, when the side guide 77 moves to a position corresponding to the L plate size, the rear guide 80 changes its posture to the protruding posture. As described above, the first guide groove 88 guides the engaging protrusion 87 of the rear guide 80 in the protruding posture. The guide groove 99 retracts the rear guide 80 in accordance with the slide of the right side guide 77 from the first position to the second position, that is, the slide to the left side (the side on which the recording paper 50 is placed). The posture is changed from a protruding posture to a protruding posture. That is, the position and guide of the rear guide 80 are such that the side guide 77 guides the side edge of the L size recording paper 50 and the rear guide 80 guides the upstream side edge of the L size recording paper 50 in the feeding direction. The position of the groove 99 is set. The bottom plate 75 has a size notation (not shown). When the user moves the side guide 77 to a position corresponding to the size notation, the side guide 77 can guide the recording paper 50 of that size.

  In a state where the engaging protrusion 87 is inserted into the first guide groove 88, the rear guide 80 in the protruding posture does not rotate to the retracted posture side. When the rear guide 80 in the protruding posture tries to rotate in the retracted posture side, that is, in the direction of the arrow 74 (see FIG. 5A), the engaging member 87 is brought into contact with the rear side surface of the first guide groove 88. This is because further rotation is restrained. That is, the first guide groove 88 extends over the movement range of the right side guide 77 corresponding to the length of the first guide groove 88 along the left-right direction 9 (an example of a certain movement range of the present invention). The rear guide 87 is maintained in the protruding posture. That is, the 1st guide groove 88 is an example of the attitude | position maintenance part of this invention.

  When the side guide 77 on the right side of the second position is slid in the direction from the second position toward the first position, that is, in the right direction, the engagement protrusion 87 slides along the first guide groove 88. As described above, at this time, the rear guide 80 maintains the protruding posture.

  When the right side guide 77 is further slid rightward, the engagement protrusion 87 passes through the first guide groove 88 and is slid along the third guide groove 90. As described above, the third guide groove 90 is a groove formed along an oblique direction. For this reason, the engaging member 87 slides along the third guide groove 90 while contacting the rear side surface of the third guide groove 90. As a result, the rear guide 80 is rotated in the direction of the arrow 74 (see FIG. 5A). As described above, the third guide groove 90 guides the engagement protrusion 87 while coming into contact with the engagement protrusion 87 of the rear guide 80 as the right side guide 77 slides to the first position.

  When the right side guide 77 is further slid rightward and reaches the first position, the engaging protrusion 87 passes through the third guide groove 90 and is slid along the second guide groove 89. At this time, the rear guide 80 is in the retracted posture. As described above, the guide groove 99 is moved in accordance with the slide of the right side guide 77 from the second position to the first position, that is, the slide to the right side (the side opposite to the side on which the recording paper 50 is placed). The posture 80 is changed from the protruding posture to the retracted posture.

[Effect of the embodiment]
In the present embodiment, the rear guide 80 is provided on the side guide 77. Therefore, when the side guide 77 slides in the left-right direction 9, the rear guide 80 also slides in the left-right direction 9. Thereby, the force required when the side guide 77 is slid in the left-right direction 9 can be reduced. Further, in the present embodiment, the guide groove 99 changes the posture of the rear guide 80 to the protruding posture as the side guide 77 slides in the left-right direction 9. The rear guide 80 in the protruding posture can align the front end of the recording paper 50 placed on the placement surface 76. As described above, in the present embodiment, it is possible to reduce the time and effort of positioning the rear guide 80 when the recording paper 50 is stored in the paper feed tray 21 while maintaining the operability of the side guide 77 well. That is, only by moving the side guide 77 to a position suitable for the recording paper 50, the rear guide 80 is in a protruding posture at a position suitable for the recording paper 50, so that the user does not need to move the rear guide 80.

  Further, in the present embodiment, by configuring the rear guide 80 to be rotatable, it is possible to easily realize a mechanism in which the rear guide 80 changes its posture as the side guide 77 slides.

  Further, in the present embodiment, the rear guide 80 in the projecting posture does not rotate so that the rotating tip moves to the front side. Therefore, in the present embodiment, when the position of the front end of the recording paper 50 is aligned by the rear guide 80, the rear guide 80 does not move, so that the position can be easily aligned. Further, when the recording paper 50 is placed on the placement surface 76 from the rear side, the rear guide 80 is prevented from changing its posture.

  Further, in the present embodiment, the rear guide 80 can be changed in the protruding posture and the retracted posture by being guided along the guide groove 99.

  Further, in the present embodiment, even if there is an error due to tolerance in the length of the recording paper 50 placed on the paper feed tray 21 in the left-right direction 9, the rotation of the rear guide 80 in the protruding posture is performed. Since the movement is hindered by the first guide groove 88, the rear guide 80 can be maintained in the protruding posture.

  Further, according to the present embodiment, since the pair of side guides 77 is formed, the paper feed tray 21 can cope with the positioning of the recording paper 50 at the center in the left-right direction 9.

  In this embodiment, since the operation unit 101 is not covered by the paper discharge tray 23, the user can easily operate the operation unit 101. Thereby, the side guide 77 can be easily slid. In the present embodiment, the rear guide 80 is moved as the side guide 77 is slid, so that the rear guide 80 can be slid even when the rear guide 80 is covered by the paper discharge tray 23.

  In the present embodiment, the rear end of the recording paper 50 placed on the placement surface 76 is positioned by the outer guide member 51, and the front end of the recording paper 50 is positioned by the rear guide 80. However, in this embodiment, since the outer guide member 51 is provided not in the paper feed tray 21 but in the printer unit 11, when the paper feed tray 21 is pulled out from the opening 13 of the printer unit 11, the rear end of the recording paper 50. Can not be positioned. However, in this embodiment, the rear guide 80 changes its posture as the side guide 77 slides. Therefore, in this embodiment, the front end of the recording paper 50 can be positioned by positioning the recording paper 50 in the left-right direction 9 by moving the side guide 77. Thereby, the rear end of the recording paper 50 is also positioned. That is, even if the outer guide member 51 is provided in the printer unit 11 instead of the paper feed tray 21 as in the present embodiment, the recording paper 50 placed on the paper feed tray 21 can be positioned.

[Modification 1]
A coil spring (an example of an urging member of the present invention) that urges the rear guide 80 in a protruding posture may be provided. As shown in FIGS. 6B and 6C, in this embodiment, a torsion spring 91 is used as a coil spring. As shown in FIG. 6C, the coil portion 92 of the torsion spring 91 is wound around the shaft protrusion 82 of the rear guide 80. One arm portion 93 of the torsion spring 91 is in contact with the outer surface 86 of the rear guide 80. The other arm portion 94 of the torsion spring 91 is in contact with the right side guide 77. Accordingly, the torsion spring 91 biases the rear guide 80 in the direction of the arrow 73 (see FIG. 5A), that is, in the protruding posture side.

  In the above-described embodiment, the width of the guide groove 99 formed in the bottom plate 75 is slightly larger than that of the engagement protrusion 87, in other words, substantially the same width as the engagement protrusion 87. Thus, the engagement protrusion 87 inserted into the guide groove 99, that is, the rear guide 80, is prevented from being greatly shaken. However, in the first modification, the rear guide 80 is urged toward the projecting posture by the torsion spring 91, so that the engagement protrusion 87, that is, the rear guide 80 does not greatly shake regardless of the width of the guide groove 99. Therefore, in the first modification, if the bottom plate 75 is formed with a guide portion that intersects with the mounting surface 76 and abuts against the engaging protrusion 87 biased toward the protruding posture side, as in the above-described embodiment. It is not necessary that the guide groove 99 is formed.

  As an example of the above-described guide portion, there is a rib that stands on the mounting surface 76 of the bottom plate 75 and extends in the same manner as the guide groove 99 of the above-described embodiment. Moreover, as another example of the above-described guide portion, a guide groove that is wider than the guide groove 99 of the above-described embodiment can be given.

  In the first modification, as shown in FIG. 6A, the bottom plate 75 is formed with a guide groove 100 that extends in the same manner as the guide groove 99 of the above-described embodiment. However, the guide groove 100 in the modification 1 is wider than the guide groove 99 of the above-described embodiment in a portion corresponding to the first guide groove 88 and the third guide groove 90 of the guide groove 99 of the above-described embodiment. Here, the 1st surface 95 which is the surface of the front side of the part corresponding to the 1st guide groove 88 of the above-mentioned embodiment is an example of the 1st guide part of the present invention. Moreover, the 2nd surface 96 which is the surface of the front side of the part corresponding to the 2nd guide groove 89 of the above-mentioned embodiment is an example of the 2nd guide part of this invention. The third surface 97, which is the front surface of the portion corresponding to the third guide groove 90 of the above-described embodiment, is an example of the third guide portion of the present invention. The first surface 95 to the third surface 97 are examples of the guide portion of the present invention. The first surface 95 is formed continuously in the left-right direction 9. The second surface 96 is formed continuously in the left-right direction 9 on the right side and the rear side of the first surface 95. The third surface 97 connects the right end of the first surface 95 and the left end of the second surface 96, and along the oblique direction with respect to the left-right direction 9 in the same manner as the third guide groove 90 of the above-described embodiment. Is formed. The first surface 95 to the third surface 97 do not need to be planar as long as they can guide the engaging protrusions 87.

  Also in the first modification, the rear guide 80 rotates as the engagement protrusion 87 slides along the guide groove 100 as in the above-described embodiment. This will be described in detail below. In a state where the right side guide 77 is positioned at the first position, the engaging protrusion 87 is urged by the torsion spring 91 and is in contact with the second surface 96. At this time, the rear guide 80 is in the retracted posture.

  When the right side guide 77 is slid leftward, the engaging protrusion 87 slides along the second surface 96 while contacting the second surface 96. Also at this time, the rear guide 80 maintains the retracted posture. That is, the second surface 96 guides the engaging protrusion 87 of the rear guide 80 in the retracted position.

  When the right side guide 77 is further slid leftward, the engaging protrusion 87 passes through the second surface 96 and is slid along the third surface 97. At this time, the engagement protrusion 87 is urged by the torsion spring 91 and is in contact with the third surface 97. That is, the third surface 97 guides the engaging protrusion 87 of the rear guide 80.

  When the right side guide 77 is further slid leftward and reaches the second position, the engaging protrusion 87 passes through the third surface 97 and is slid along the first surface 95. At this time, the engagement protrusion 87 is urged by the torsion spring 91 and is in contact with the first surface 95. At this time, the rear guide 80 is in a protruding posture. That is, the first surface 95 guides the engaging protrusion 87 of the rear guide 80 in the protruding posture.

  When the right side guide 77 at the second position is slid rightward, the engaging protrusion 87 is urged by the torsion spring 91 and slides along the first surface 95 while contacting the first surface 95. As described above, at this time, the rear guide 80 maintains the protruding posture.

  As described above, in the guide groove 100 in the first modification, the portions corresponding to the first guide groove 88 and the third guide groove 90 of the guide groove 99 of the above-described embodiment are wider than the guide groove 99 of the above-described embodiment. It is. That is, in the first modification, on the front side of the first surface 95, as shown in FIGS. 6D and 6E, there is an engagement protrusion 87 of the rear guide 80 that is continuous with the first surface 95. A space 98 (an example of the separation portion of the present invention) that can be formed is formed. Therefore, as shown in FIG. 6D, even when the rear guide 80 is in the protruding posture, as shown in FIG. By rotating against the urging force, the posture can be changed from the protruding posture to the retracted posture by separating from the first surface 95.

  When the right side guide 77 is further slid rightward, the engagement protrusion 87 passes through the first surface 95 and is urged by the torsion spring 91 to contact the third surface 97 and contact the third surface 97. Slide along. When the right side guide 77 is further slid rightward, the engagement protrusion 87 passes through the third surface 97 and is urged by the torsion spring 91 to contact the second surface 96 while being brought into contact with the second surface 96. Slide along. At this time, the rear guide 80 is in the retracted posture.

  As described above, the first surface 95 to the third surface 97 are brought into contact with and guided by the engaging protrusions 87 of the rear guide 80 as the right side guide 77 slides, so that the rear guide 80 is in the retracted position and the protruding position. Change posture between.

  Further, even if the engaging protrusion 87 is urged to the protruding posture side by the torsion spring 91, the rear guide 80 in the retracted posture is prevented from rotating by the second surface 96 due to the urging. The retracted posture is maintained against the urging force of the torsion spring 91. Further, the rear guide 80 in the protruding posture maintains the protruding posture by the engagement protrusion 87 contacting the first surface 95. Further, the rear guide 80 changes its posture from the retracted posture to the protruding posture or vice versa against the urging force of the torsion spring 91 when the engaging protrusion 87 contacts the third surface 97. That is, the first surface 95 to the third surface 97 come into contact with the rear guide 80 as the right side guide 77 moves, and guide the rear guide 80 from the protruding posture to the retracted posture against the torsion spring 91. .

  In the first modification, the rear guide 80 is biased by the torsion spring 91 and pressed against the first surface 95 to the third surface 97, so that the protruding posture and the retracted posture can be maintained.

  In the first modification, the rear guide 80 is guided between the first surface 95 and the second surface 96 while being urged by the torsion spring 91 and pressed against the first surface 95 to the third surface 97. Thus, the posture can be changed to a protruding posture and a retracted posture.

  Further, according to the first modification, the projecting rear guide 80 can move to the space 98 against the urging force of the torsion spring 91. Thereby, the rear guide 80 can also take a retracted posture at the same position as the protruding posture. As a result, a plurality of types of recording paper 50 having the same length in the left-right direction 9 and different lengths in the front-rear direction 8 can be placed on the paper feed tray 21 of the first modification.

[Modification 2]
In the above-described embodiment, as shown in FIGS. 3 to 5, the rear guide 80 in the retracted position has the same position in the left-right direction 9 between the rotation tip and the rotation shaft. However, as shown in FIG. 7, in the rear guide 80 in the retracted position, the rotation tip 80A may be on the left side of the rotation shaft 80B in the left-right direction 9, that is, the side on which the recording paper 50 is placed. .

  In the above-described embodiment, the rear guide 80 rotates in the direction of the arrow 73 (see FIG. 5A) when the posture changes from the retracted posture to the protruding posture. According to the second modification, the rear guide 80 in the retracted posture is in a state where the turning tip 80A is slightly closer to the protruding posture side than the turning shaft 80B. Therefore, when the rear guide 80 changes its posture from the retracted posture to the protruding posture, the rear guide 80 can be smoothly moved from the retracted posture. As a result, the force required when sliding the side guide 77 in the left-right direction 9 can be reduced.

[Modification 3]
In the above-described embodiment, as shown in FIGS. 3 to 5, one side guide 77 is provided with one rear guide 80. However, one side guide 77 may be provided with a plurality of rear guides 80. For example, as shown in FIG. 8A, two rear guides 80 may be provided on the right side guide 77.

  In the case of the third modification, in the process in which the right side guide 77 is slid from the first position to the second position, the rear guide 80A disposed on the front side first changes its posture from the retracted position to the protruding position (FIG. 8B )reference). Thereafter, the rear guide 80B disposed on the rear side changes from the retracted position to the protruding position (see FIG. 8C). For example, the rear guide 80A is provided at a position where the postcard-size recording paper 50 can be guided in the protruding posture, and the rear guide 80B is provided at a position where the L-size recording paper 50 can be guided in the protruding posture. . According to this configuration, when the side guide 77 is at a position corresponding to the postcard size, the rear guide 80A protrudes and the rear guide 80B remains in the retracted posture. When the side guide 77 is further moved to the left side, the rear guide 80B is also in the protruding posture.

  In order to realize such an operation, in the third modification, as shown in FIG. 8A, the third guide groove of the guide groove 99 into which the engagement protrusion 87 of the rear guide 80A disposed on the front side is inserted. 90A is formed on the right side (outside in the left-right direction 9) of the third guide groove 90B of the guide groove 99 into which the engagement protrusion 87 of the rear guide 80B disposed on the rear side is inserted. That is, the right end of the third guide groove 90B for the rear guide 80B is formed on the left side of the position of the engagement protrusion 87 when the side guide 77 is at a position corresponding to the postcard-sized recording paper 50.

  The paper feed tray 21 of Modification 3 can place recording paper 50 of a plurality of types of sizes.

[Modification 4]
When the rear guide 80 is provided on both the pair of side guides 77, as shown in FIG. 8D, the position of the rear guide 80 provided on one side of the side guide 77 in the protruding posture in the front-rear direction 8 is The rear guide 80 provided on the other side of the side guide 77 is preferably different from the position in the protruding posture in the front-rear direction 8. In FIG. 8D, the position of the rear guide 80C attached to the left side guide 77 in the front-rear direction 8 is the position of the rear guide 80A attached to the front side and the rear guide 80B attached to the rear side in the right side guide 77. It is a position between. The position of the rear guide 80 provided on one side of the side guide 77 in the front-rear direction 8 is preferably different from the position of the rear guide 80 provided on the other side of the side guide 77 in the front-rear direction 8. Needless to say, the positions of 8 may be the same.

  If there is no significant difference in the length of the recording paper 50 in the front-rear direction 8 in each of a plurality of types of sizes, the rear guides 80 may come into contact with each other if the rear guides 80 are arranged on one side guide 77. is there. However, in the modified example 4, since the adjacent rear guides 80 can be arranged on different side guides 77, the contact of the rear guides 80 as described above can be prevented.

[Modification 5]
In the above-described embodiment, the posture of the rear guide 80 is changed by turning, but the posture of the rear guide 80 may be changed by other than turning. For example, the rear guide 80 may change its posture from the retracted posture to the projecting posture by sliding backward to the left as the right side guide 77 slides leftward.

9: Left and right direction 10: Multifunction machine 11: Printer unit 21: Paper feed tray 50: Recording paper 75: Bottom plate 76: Loading surface 77: Side guide 78: Inner side surface 80: Rear guide 99: Guide groove

Claims (16)

A bottom plate having a placement portion on which a sheet to be fed is placed;
A side guide having a contact portion that slides in the width direction perpendicular to the sheet feeding direction with respect to the bottom plate, and that contacts a width direction end of the placed sheet;
A protruding posture that is attached to the side guide and protrudes to the side where the sheet is placed than the contact portion, and the sheet is mounted at the same position in the width direction as the contact portion or the contact portion. A rear guide that changes in a retracted position to retract to a side opposite to the placed side, and abuts against an upstream end in the feeding direction of the sheet placed on the placing unit in the protruding posture;
The rear guide is provided on the bottom plate, and changes the posture of the rear guide from the retracted posture to the protruding posture as the side guide slides toward the seat placement side, to the side opposite to the seat placement side of the side guide. And a posture changing portion that changes the posture of the rear guide from the protruding posture to the retracted posture in accordance with the slide. The side guide includes a support portion that rotatably supports the rear guide around a rotation axis along a direction orthogonal to the feeding direction and the width direction,
The tray according to claim 1, wherein the rear guide changes its posture between the protruding posture and the retracted posture by rotating.   3. The tray according to claim 2, wherein the rear guide in the retracted position is such that a rotation tip of the rear guide is positioned closer to a sheet placement side than the rotation shaft in the width direction. The rear guide is rotated from the retracted position to the protruding position by rotating toward the seat placement side, and is rotated in the opposite direction to the rotation at the time of changing the posture from the retracted position to the protruding position. The posture changes from the protruding posture to the retracted posture by
4. The tray according to claim 2, wherein the rear guide in the retracted position is such that a rotation tip of the rear guide is located downstream of the rotation shaft in the feeding direction. A biasing member that biases the rear guide to the protruding posture;
The posture changing portion intersects with the placement portion, contacts the rear guide as the side guide moves, and guides the rear guide from the protruding posture to the retracted posture against the biasing member. The tray of Claim 4 provided with a guide part. The rear guide includes a sliding portion that slides relative to the guide portion,
The guide portion is formed continuously in the width direction, and includes a first guide portion that guides the sliding portion of the rear guide in the protruding posture, and a downstream side in the feeding direction from the first guide portion. A second guide portion that is formed and guides the sliding portion of the rear guide in the retracted position; and a third guide portion that connects the first guide portion and the second guide portion to guide the rear guide. The tray according to claim 5.   The tray according to claim 6, wherein the posture changing portion includes a separation portion that is continuous with the first guide portion and allows the posture of the rear guide to be changed from the guide portion to the retracted posture. The posture changing portion includes a guide groove formed in the bottom plate,
The rear guide includes a sliding portion that slides along the guide groove,
The guide groove extends along the width direction and guides the sliding portion of the rear guide in the protruding posture, and is formed on the downstream side of the feeding direction with respect to the first guide groove. A second guide groove for guiding the sliding portion of the rear guide in the retracted posture, and a third guide groove for connecting the first guide groove and the second guide groove to guide the sliding portion. Item 5. The tray according to item 4.   The tray according to any one of claims 1 to 8, wherein the posture changing unit includes a posture maintaining unit that maintains the rear guide in the protruding posture over a certain amount of movement range of the side guide. A plurality of the rear guides are provided in the feeding direction,
In the process of sliding the side guide toward the seat placement side, the posture changing unit moves the rear guide provided on the upstream side in the feeding direction from the rear guide provided on the downstream side in the feeding direction. The tray according to any one of claims 1 to 9, wherein the tray is first changed in posture from the retracted posture to the protruding posture. The side guides are formed as a pair separated in the width direction,
The tray according to any one of claims 1 to 10, wherein the rear guide is provided on at least one of the pair of side guides. The rear guide is provided on both of the pair of side guides,
The tray according to claim 11, wherein a position of the rear guide provided on one side of the side guide in the feeding direction is different from a position of the rear guide provided on the other side of the side guide in the feeding direction. The side guide includes an operation unit that is gripped to slide the side guide,
The tray according to any one of claims 1 to 12, further comprising a cover portion that covers the bottom plate, the side guide, and the rear guide on the upstream side in the feeding direction from the operation portion. A bottom plate on which a sheet to be fed is placed;
It slides to the first position in the width direction perpendicular to the sheet feeding direction with respect to the bottom plate and the second position on the side where the sheet is placed from the first position in the width direction. A side guide having a contact portion that contacts the end in the width direction of the sheet,
A rear guide attached to the side guide and in contact with the upstream end of the seat in the feeding direction;
Provided on the bottom plate, the side guide comes into contact with the rear guide as the side guide slides to the first position, and the rear guide is seated at the same position as the contact portion in the width direction or at the seat than the contact portion. The position of the rear guide is changed to a retracted position in which the side guide is retracted to a side opposite to the side where the side guide is placed, and the side guide is brought into contact with the rear guide as the side guide slides to the second position. A tray that includes a posture changing portion that changes the posture of the rear guide to a protruding posture that protrudes toward the side on which the sheet is placed. A tray according to any of claims 1 to 14,
A mounting portion on which the tray is mounted;
A feeding unit that feeds the sheet placed on the placement unit on the tray mounted on the mounting unit in the feeding direction;
An image recording apparatus comprising: a recording unit that records an image on the sheet fed by the feeding unit. A guide member that contacts the sheet fed in the feeding direction and guides the sheet;
The tray is erected from the downstream end of the bottom plate in the feeding direction, and includes a stopper that stops the movement of the sheet placed on the placement unit in the feeding direction.
The image recording apparatus according to claim 15, wherein the guide member is located at a position different from the stopper in the width direction and closer to the rear guide than the stopper in a state where the tray is attached to the attachment portion. .

Images