JP2009269694A - Printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the entry of dust by covering an opening part of a tray body when a paper tray is not installed and to eliminate failures coming out of the paper tray when stored paper is inserted and removed, in a vertically installed printer allowing miniaturization. <P>SOLUTION: In this printer, the paper tray 21 laminated and stored with paper on a bottom plate 25 of the tray body 23 is installed in a tray installing part 3 in a slanted or erected state from a tray insertion/removal port. A tray holding part 4 for holding an inserting direction distal end side part of the paper tray 21 is provided in a depth part of the tray installing part 3. Paper guiding parts 9 are projectingly provided to push back paper in the tray body 23 in an anti-insertion direction of the paper tray 21 when the paper tray 21 is installed in the printer body 1 of the paper tray 21. Opening cut-out parts are formed to locate the paper guiding parts 9 when the paper tray 21 is installed in the printer body 1 at an end wall and bottom plate 25 on the inserting direction distal end side of the paper tray 21. Projections 29 to project in a projection dimension or less in the paper tray inserting direction of the paper guiding parts 9, lock a distal end of the paper in an opening part 22 for conveyance and regulate moving of paper in the opening part 22 for conveyance direction are formed on the end wall 26 on the inserting direction distal end side of the paper tray body. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a printer in which a paper tray is inserted and removed while being skewed or upright with respect to a printer main body, and more particularly to a printer characterized by the paper tray itself and an insertion / removal mechanism for the printer main body.

  Conventionally, a printer main body in which a tray insertion / removal opening of the tray mounting portion is formed in the housing, and sheets of a desired size are stacked and stored, and the tray insertion / removal opening can be inserted into and removed from the tray mounting portion in the printer main body. A printer having a paper tray is used.

  In this printer, a paper tray is inserted into the tray insertion / removal port from the leading end side during recording, and is attached to the tray mounting portion in the printer main body, and the separation roller provided in the printer main body is placed at the top of the paper tray. The sheet is separated one by one by contacting the leading end side of the stacked sheets and rotating the separation roller, and is fed to the printing unit in the printer body from the conveyance opening that opens at the leading end of the sheet tray. It is configured to paper.

  The printer having this configuration is configured to reduce the weight and size of the printer main body by exposing the rear end side of the paper tray to the outside of the printer main body when the paper tray is mounted on the tray mounting portion. In recent years, in order to further reduce the installation area of the printer (space-saving), the paper tray is in a direction other than the horizontal direction with respect to the printer body (including an oblique direction and a vertical direction). A printer that is configured to be inserted / removed from the “concept” direction ”has been developed (see Patent Document 1).

JP 2000-103537 A

  In a printer that inserts and removes the paper tray vertically with respect to the printer body (referred to as “vertically mounted printer”), when the paper tray is inserted into and removed from the tray mounting portion of the printer body, the user tilts the paper tray diagonally. It will be held and inserted / removed. At this time, the conventional paper tray has a problem that the paper stored in the paper tray slides out of the space for placing the separation roller secured on the front end side of the paper tray and the paper feeding unit due to its own weight. was there.

  Furthermore, if the transport opening is in an open state when the paper tray is not attached to the printer, dust may enter from the transport opening and cause printing defects.

  In order to solve the above-described problems, the present invention provides a vertically mounted printer that can reduce the size and space of the printer, and covers the opening of the tray body when the paper tray is not attached to the printer. It is an object of the present invention to provide a printer having a mechanism with a good feeling of use that can prevent the entry of dust and solve the problem that the stored paper comes out of the paper tray at the time of insertion and removal.

  In order to achieve the above-described object, the printer of the present invention skews a paper tray in which sheets are stacked and stored on the bottom plate of the tray main body with respect to the printer main body from a tray insertion / removal opening formed in the casing of the printer main body. In addition, in the printer that is mounted on the tray mounting unit in an upright state, a tray holding unit that holds the front end side of the paper tray of the tray main body to be inserted is disposed at the back of the tray mounting unit. The tray holding portion is provided with a paper guide portion that protrudes into the tray body when the paper tray is attached to the printer body and pushes the paper stored in the tray body in the direction opposite to the insertion direction of the paper tray. An opening for positioning the paper guide when the paper tray is attached to the printer main body on the end wall and bottom plate of the tray main body in the insertion direction of the paper tray. A notch is formed, and the upper surface of the end wall on the leading end side in the insertion direction of the tray main body protrudes with a dimension equal to or smaller than the protruding dimension in the insertion direction of the paper tray in the tray main body of the paper guiding portion. A protrusion for restricting movement of the sheet in the direction of the opening is formed.

  The printer having such a configuration, when mounted on the printer body of the paper tray, rushed into the tray body from an opening notch formed on the end wall and the bottom plate of the tray body in the insertion direction of the paper tray. The paper stored in the tray body is pushed back in the direction opposite to the paper tray by the paper guide unit. At this time, the sheet is formed on the upper surface of the end wall on the front end side in the insertion direction of the tray body by being pushed back larger than the protruding amount of the protrusion formed on the upper surface of the end wall on the front end side in the insertion direction of the tray body. It is sent to the conveyance path from the conveyance opening while avoiding the protruding portion. Further, when the paper tray is not attached to the printer main body, the protruding portion formed on the tray main body abuts on the top surface of the paper stacked on the tray main body, so that the position of the paper is regulated in the tray main body. Act on.

  Further, the printer of the present invention includes a top plate that covers an open top surface excluding the transport opening, a lid body that has a pair of side walls that are suspended from the sides of the top plate, and a top plate of the lid body. Arranged in parallel with the top plate on the outer side, suspended from the movable top plate covering the transfer opening and the side walls of the movable top plate, and arranged on the outer side of the pair of side walls in parallel with the side walls, respectively. A movable lid having a pair of movable side walls, and the movable lid is formed on the main body side slide guide portion formed on the lid body on the distal end side in the insertion direction of the paper tray of the lid body and the movable lid. A lid body that is slidable in the insertion / removal direction of the paper tray with respect to the lid body by engaging with the movable side slide guide portion, and a lid side hook is formed on the outer surface of the movable lid. A tray unit for the printer body An abutting portion that abuts the end of the movable lid in the insertion direction of the paper tray when the paper tray is attached to the printer body is formed on the front side of the tray holding portion of the paper tray. A main body side hook for engaging the lid side hook when the paper tray is removed from the printer main body is disposed on the near side of the tray mounting portion of the printer main body in the insertion direction of the paper tray. It is characterized by.

  In a printer having such a configuration, the paper tray can be moved by being inserted into a tray insertion / removal opening formed in a housing of the printer main body while being skewed or upright with respect to the printer main body. The transport formed on the paper tray insertion direction side on the open upper surface of the tray body by applying the lid to the contact portion of the printer body and sliding the sheet body in the reverse direction of the paper tray on the upper surface of the lid body When the opening for opening is opened and removed from the tray insertion / removal opening, the transport opening of the paper tray can be closed by engaging the lid side hook with the main body side hook.

  The main body side slide guide portion is formed on a pair of side walls of the lid main body, the movable side slide guide portion is formed on the movable lid, and either the main body side slide guide portion or the movable side slide guide portion is provided. One is formed as a cam groove that is directed upward in the direction opposite to the insertion direction of the paper tray, and one of the main body side slide guide part and the movable side slide guide part is movably engaged in the cam groove. It may be formed as a mating convex engaging portion.

  Another printer includes a top plate covering an open top surface excluding the transport opening, a lid body having a pair of side walls extending from a side of the top plate, and an outer surface of the top plate of the lid body. A pair of movable top plates that are arranged in parallel to the top plate and that are suspended from the side walls of the movable top plate and the movable top plate that cover the transfer opening, and that are respectively arranged in parallel to the side walls on the outer sides of the pair of side walls. A movable lid having a movable side wall, wherein the movable lid has a main body-side slide guide portion formed on the lid body and a movable lid formed on the movable lid on the leading end side in the insertion direction of the paper tray of the lid body. A mechanism that is slidable in the insertion / removal direction of the paper tray with respect to the lid main body by engaging with the side slide guide portion, and that holds the movable lid in a normally closed state by a spring bias. The printer body tray An abutting portion that abuts the end of the movable lid in the insertion direction of the paper tray when the paper tray is attached to the printer main body is formed on the front side of the paper tray in the insertion portion from the tray holding portion. It is characterized by being.

  In a printer having such a configuration, the paper tray can be moved by being inserted into a tray insertion / removal opening formed in a housing of the printer main body while being skewed or upright with respect to the printer main body. The paper tray on the open upper surface of the tray main body is slid in the paper tray anti-insertion direction on the upper surface of the lid main body while abutting against the abutting portion of the printer main body and resisting the biasing force of the spring. When opening the conveyance opening formed on the insertion direction side of the paper and pulling it out from the tray insertion / removal opening, the movable lid is returned to the closed state by using the biasing force of the spring, so that the paper tray conveyance opening The part can be closed.

  Any of the printers of the present invention having the above-described configuration can open and close the conveyance opening by moving the movable lid by attaching and detaching the paper tray to and from the printer main body. When the paper tray is not attached to the printer, the movable lid covers the transport opening of the tray main body, and the cover body can cover the entire open upper surface of the tray main body. It is possible to surely prevent problems that come out from the opening, prevent dust from entering the paper tray, and avoid the occurrence of defective printing.

  As described above, according to the printer of the present invention, when the paper tray is not attached to the printer, the protrusion formed on the tray main body regulates the position of the paper stacked on the tray main body, thereby The problem of getting out of the tray can be solved.

  Further, when the paper tray is not attached to the printer, the movable cover covers the transport opening of the tray main body, and the cover body can cover the entire open upper surface of the tray main body. It is possible to surely prevent problems that come out from the opening, prevent dust from entering the paper tray, and avoid the occurrence of defective printing.

  Then, by attaching / detaching the paper tray to / from the printer main body, the movable lid can be moved to open and close the conveyance opening, so that an excellent effect such as a very good feeling of use can be achieved.

  First, a first embodiment of the printer of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view illustrating a state before the paper tray is mounted on the printer main body of the printer according to the first embodiment. FIG. 2 is a diagram illustrating a state where the paper tray is mounted on the printer main body of the printer according to the first embodiment. It is a perspective view explaining a state. 3 is a side view of the printer of this embodiment in the state of FIG. 2, and FIG. 4 is a sectional view taken along the line IV-IV of FIG. FIGS. 5A and 5B are explanatory views showing a state in which the movable lid of the paper tray of the present embodiment is closed, in which FIG. 5A is a plan view, FIG. 5B is a side view, and FIG. Sectional drawing and (D) are the principal part expansion explanatory views of (C). 6 is an explanatory view showing a state in which the movable lid of the paper tray of the present embodiment is opened and the opening for conveyance is opened, (A) is a plan view, and (B) is B in (A). -B sectional drawing, (C) is principal part expansion explanatory drawing of (B), (D) is a perspective view. Further, FIG. 7 is an explanatory diagram for explaining the relationship between the tray holding portion and the paper tray of the printer of this embodiment, where (A) is a plan view, (B) is a side view, and (C) is (A). It is CC sectional drawing of. In each of these drawings, the casing of the printer main body is not shown, and only the main parts related to the mounting and holding of the printer main body of the paper tray are selectively illustrated. Note that the side indicated by the thick arrow in FIGS. 1 to 3 is a side located parallel to the placement surface of the vertically mounted printer.

  The printer according to the present embodiment includes a printer main body 1 having a printing unit in which a thermal head is disposed, and a paper tray 21 in which sheets P fed and conveyed to the printing unit are stacked and stored.

  The printer main body 1 has a tray insertion / removal opening formed on the upper surface of a housing (not shown). A paper tray 21 having a configuration described later is inserted into the tray insertion / removal opening as shown in FIG. Inserted in a state of being skewed with respect to the printer main body 1 from the front end side where the opening 22 for conveyance located upstream is formed, and as shown in FIG. By attaching and holding the front end side of the tray main body 23 where the opening 22 for conveyance is opened to the tray holding part 4 formed in the back part of the tray mounting part 3 formed between the side wall members 2 of The paper tray 21 can be mounted on the tray mounting portion 3. In the printer of this embodiment, when the paper tray 21 is mounted on the tray mounting portion 3, the rear end side of the paper tray 21 is exposed outside the printer main body 1 from the tray insertion / removal port, thereby reducing the size of the printer. And space saving.

  Here, in the printer of this embodiment, guide rails 15 for guiding insertion / removal of the paper tray 21 are formed on the pair of side wall members 2 in the printer main body 1. The guide rail 15 has a U-shaped vertical cross section, and is formed on each of the pair of side wall members 2 so that the recesses face each other. The recesses are formed on both sides of the tray main body 23 constituting the paper tray 21. By fitting and slidingly moving the protruding rail fitting portion 24, the paper tray 21 is guided by the guide rail 15 and can be attached to and detached from the tray mounting portion 3.

  Further, when the paper tray 21 is attached to the printer main body 1 at the portion immediately before the tray holding portion 4 in the insertion / removal direction of the paper tray 21 of the pair of side wall members 2 constituting the tray mounting portion 3, it will be described later. A wall-like abutting portion 6 for preventing the movable lid 61 from entering the tray holding portion 4 is formed. In addition, the lid 41 of the paper tray 21 opens just before the abutting portion 6 and is located above a tray opening prevention protrusion 65 formed on the movable lid 61 of the paper tray 21 described later. A printer side locking projection 7 is formed to prevent this.

  With this configuration, when the paper tray 21 is mounted on the tray mounting portion 3, the movable lid 61 abuts against the abutting portion 6, and further intrusion to the back side is prevented. The main body 23 is further inserted. Thereby, the opening 22 for conveyance can be opened in the upper surface at the front end side of the tray main body 23.

  Further, when the paper tray 21 is pulled out from the tray mounting portion 3 on the side opposite to the paper tray 21 of the abutting portion 6 in the pair of side wall members 2 constituting the tray mounting portion 3, a lid which will be described later. Printer-side hooks 8 for engaging lid-side hooks 66 formed on the movable lid 61 of the body 41 are provided.

  Each of the printer-side hooks 8 has a base end fixed to the pair of side wall members 2, and a flexible piece 8 a that extends in the anti-insertion direction of the paper tray 21 through a rising portion formed at an intermediate portion. And a hook-like hook portion 8b is formed at the free tip of the flexible piece 8a. Therefore, the printer-side hook 8 of the present embodiment is configured such that the flexible piece 8a bends when the lid-side hook 66 contacts the hook portion 8b.

  In this embodiment, the tray holding unit 4 disposed at the back of the tray mounting unit 3 is attached to the tray mounting unit 3 at the front end of the tray main unit 23 when the paper tray 21 is mounted on the tray mounting unit 3 of the printer main unit 1. A block-shaped paper guide portion 9 that protrudes into the tray main body 23 and moves the paper stored in the tray main body 23 in the direction opposite to the insertion direction of the paper tray 21 is provided. Further, the pair of side wall members 2 constituting the tray holding portion 4 are each formed with a holding locking hole 10 capable of locking a tray holding hook 68 formed in the tray main body 23.

  In the printer main body 1, a separation roller (not shown) is disposed immediately before the printing unit, and this separation roller is applied to the leading end side of the paper P stacked on the top of the paper tray 21. By contacting and rotating, the sheets P are separated one by one and conveyed from the conveyance opening 22 opened to the front end side of the sheet tray 21 to the printing unit.

  Further, the paper tray 21 of the present embodiment is disposed so as to be able to cover the open upper surface of the tray main body 23 and the tray main body 23 in the form of a rectangular box on the open upper surface where the paper P is stacked on the bottom plate 25. The lid 41 is provided.

  In the present embodiment, the tray body 23 regulates the position in the width direction of the single sheet P cut to a desired size, and the insertion / removal direction of the sheet tray 21 with respect to the printer body 1 is the tray body 23 of the sheet P. The above-described movement of the paper guide portion 9 is allowed to be allowed. The paper formed on the tray holding portion 4 of the printer main body 1 is attached to the end wall 26 and the bottom plate 25 on the front end side in the insertion direction of the paper tray 21 of the tray main body 23 when the paper tray 21 is attached to the printer main body 1. An opening notch 27 for positioning the guide 9 is formed. In the present embodiment, the two paper guide portions 9 are formed at positions that are symmetrically separated from the center in the width direction of the paper P stored in the paper tray 21. The bottom plate 25 on the front end side of the tray main body 23 is pushed up to the separation roller side so that the front end side of the stacked sheets P is brought into contact with the separation roller when the paper tray 21 is attached to the printer main body 1. For this purpose, a lift-up opening 28 is formed to which a lift-up mechanism (not shown) of the printer main body 1 faces.

  Further, the upper surface of the end wall 26 on the leading end side in the insertion direction of the tray body 23 protrudes with a dimension equal to or less than the protruding dimension in the insertion direction of the paper tray 21 in the tray body 23 of the paper guide portion 9, A claw-like protrusion 29 is formed to lock the leading edge of the paper P at the portion and restrict its outflow movement.

  The lid body 41 of the present embodiment has a top plate 52 disposed on the open top surface excluding the transport opening 22 of the tray body 23 when the open top surface of the tray body 23 is covered, and the top plate 52. The lid body 51 includes a pair of side walls 53 that are arranged in parallel to the outer sides of the pair of side walls 30 that are provided from the side edges of the tray body 23.

  In the present embodiment, the lid body 41 has an end portion on the side opposite to the insertion direction of the paper tray 21 in the pair of side walls 53, and an end portion on the side opposite to the insertion direction of the paper tray 21 in the pair of side walls 30 constituting the tray body 23. The tray body 23 is configured to open or cover the upper surface of the tray main body 23 by rotating around the shaft stopping portion. Therefore, when the paper tray 21 is replenished with the paper P, the lid body 41 may be rotated so as to open the upper surface with the shaft stopper.

  When the paper tray 21 is attached to the printer main body 1, the lid main body 51 opens a conveyance opening 22 formed in the tray main body 23. When the paper tray 21 is not attached, the lid main body 51 serves as a shutter that closes the conveyance opening 22. A movable lid 61 is provided so as to be slidable in the insertion / removal direction of the paper tray 21.

  In the present embodiment, the movable lid 61 is slidably arranged on the top surface of the top plate 52 in the insertion direction of the paper tray 21 and is slidably movable, and at least the movable top plate 62 covering the transport opening 22. And a pair of movable side walls 63 that are suspended from the sides of the movable top plate 62 and are arranged in parallel to the outside of the pair of side walls 53 of the lid main body 51. A slide groove 54 as a main body side slide guide portion is formed at the front end side of the pair of side walls 53 of the lid body 51 in the insertion direction of the paper tray 21, and the pair of movable side walls 63 of the movable lid 61 are formed. On the inner surface, a slide projection (not shown) is formed as a movable side slide guide portion that engages with the slide groove 54 and moves slidably in the slide groove 54. The main body side slide guide portion 54 may be formed in a protrusion shape, and the movable side slide guide portion may be formed in a groove shape. Then, the movable lid 61 slides so that the front end side thereof extends in the insertion direction side of the paper tray 21 in the lid main body 51, protrudes from the lid main body 51 to the front end side, and is supported in a cantilever manner. By being positioned, the transport opening 22 is covered, and the movable lid 61 slides in the opposite direction, that is, in the direction opposite to the insertion direction of the paper tray 21, and the movable top plate 62 is moved to the top of the lid main body 51. By being positioned so as to overlap with the plate 52, the conveyance opening 22 is configured to be opened so that paper can be fed.

  In the present embodiment, a tray opening prevention protrusion 65 protruding outward is formed on the outer surface of the pair of movable side walls 63 of the movable lid 61 at the front end in the insertion direction of the paper tray 21.

  In addition, on the outer side of the pair of movable side walls 63 of the movable lid 61, the opening prevention protrusion 65 is on the near side in the direction opposite to the insertion direction of the paper tray 21 when the paper tray 21 is pulled out from the tray mounting portion 3. 8 is formed. As shown in FIG. 1, the lid-side hook 66 is closer to the printer body 1 than the distance dimension X in the insertion / removal direction of the paper tray 21 between the contact wall on the printer body 1 side and the printer-side hook 8. The distance dimension Y in the insertion / removal direction of the paper tray 21 from the front end of the movable lid 61 engaged with the contact wall to the lid-side hook 66 is formed at a small position. With this configuration, the tray body 23 is pulled out, while the movable lid 61 has the lid side hook 66 engaged with the printer side hook 8, and the paper tray 21 is moved more than the engaging force between the hooks 8 and 66. By staying until the pulling force acts largely, the transfer opening 22 that has been opened on the top surface of the front end of the tray body 23 can be covered with the movable lid 61 again.

  Engaging portions for restricting the position of the movable lid 61 when the paper tray 21 is not attached to the printer main body 1 are respectively provided on the opposing surfaces of the top plate 52 of the lid body 51 and the movable top plate 62 of the movable lid 61. 55 and 67 are formed. Specifically, in the present embodiment, as shown in FIG. 5D, a concave engagement portion 67 is formed in the vicinity of the end side of the lower surface of the movable lid 61 in the anti-insertion direction of the paper tray 21. The top surface of the top plate of the lid body 51 is located at a position corresponding to the concave engagement portion 67 of the movable lid 61 when the paper tray 21 is not attached to the printer body 1. A convex engagement portion 55 to be engaged is formed. Note that the concave and convex relationship of the engaging portions 55 and 67 may be such that a concave engaging portion is formed in the lid main body 51 and a convex engaging portion is formed in the movable lid 61. Thus, by providing a configuration that restricts the movement of the movable lid 61 when the paper tray 21 is not attached to the printer main body 1, the paper tray 21 prevents injuries and paper outflow due to unexpected opening and closing of the movable lid. Can be handled easily.

  Further, a tray holding hook 68 configured to be able to be locked in a holding locking hole 10 formed in the tray holding portion 4 at the leading end portion in the insertion direction of the paper tray 21 in the pair of side walls 30 of the tray main body 23. Is formed. The tray holding hook 68 has a triangular hook section 68b formed at the free end of a flexible piece 68a surrounded on three sides by a U-shaped notch connected in the opposite direction of the paper tray 21. Yes.

  In the printer configured as described above, the paper tray 21 extends along the guide rail 5 while being skewed or upright with respect to the printer main body 1 at a tray insertion / removal opening formed in the housing of the printer main body 1. Is inserted, the movable lid 61 of the paper tray 21 abuts against the abutting portion 6 of the tray mounting portion 3. In this state, when the tray body 23 is further inserted further into the back side, the movable lid 61 is prevented from entering the tray holding portion 4 side by the abutting portion 6, and the lid body 51 and the lid body 51 are in accordance with the slide groove 54. Slide to overlap. Therefore, the conveyance opening 22 formed on the open upper surface of the tray body 23 on the insertion direction side of the paper tray 21 is opened. Further, when the tray main body 23 itself is further inserted, the tray holding hook 68 formed at the leading end thereof is locked in the holding locking hole 10 on the printer side and is held in the tray holding portion 4. The The tray main body 23 is stored in the tray main body 23 by the paper guide portion 9 that has entered the tray main body 23 from the opening notch 27 formed in the end wall 26 and the bottom plate 25 on the front end side of the paper tray 21 in the insertion direction. The sheet P being pushed is pushed back in the direction opposite to the insertion direction of the sheet tray 21. At this time, the paper P avoids the protrusion P by being pushed back in the anti-insertion direction larger than the protrusion amount of the protrusion 29 formed on the upper end wall of the tray main body 23 in the insertion direction front end side. As a result, the paper tray 21 is mounted on the tray mounting portion 3.

  In this state, in the transport opening 22, the paper P is pushed up to the open upper surface by a lift-up mechanism (not shown), the uppermost paper is brought into contact with the separation roller, and the separation roller is rotated. The sheets are separated one by one and conveyed from the conveyance opening 22 to the conveyance path.

  At this time, in this embodiment, the lid body 41 can prevent the lid body 41 from being opened by the printer side locking projection 7 and the opening prevention projection 65.

  When the paper tray 21 is removed from the printer main body 1, the printer-side hook 8 and the lid-side hook 66 are engaged, so that the tray main body 23 is pulled out while the movable lid 61 is on the lid side. The hook 66 engages with the printer-side hook 8 and remains until the force for pulling out the paper tray 21 is greater than the engaging force between the hooks 8 and 66, so that the conveyance that has been opened on the top surface of the front end of the tray main body 23. The opening 22 can be covered with the movable lid 61 again. As described above, in the present embodiment, by attaching and detaching the paper tray 21 to the printer body 1, the movable lid 61 can be moved to open and close the conveyance opening 22, so that the usability is extremely good. It becomes.

  Further, since the engagement of the paper guide portion 9 with the tray body 23 is released, the paper P in the paper tray 21 is moved to its original position so that the leading edge is aligned with the end wall in the insertion direction of the paper tray 21 by its own weight. Therefore, the protrusion 29 formed on the tray main body 23 comes into contact with the front end of the paper P stacked on the tray main body 23 to restrict the position of the paper P and prevent the paper P from flowing out of the paper tray 21. Act on.

  Therefore, when the paper tray 21 is not attached to the printer main body 1, the movable lid 61 covers the transport opening 22 of the tray main body 23, and the open upper surface of the tray main body 23 is covered by the lid body 41. As a result, it is possible to reliably prevent the problem that the paper P flows out from the conveyance opening 22 of the paper tray 21 and to prevent dust from entering the paper tray 21 and avoid the occurrence of printing defects. can do.

  In addition, the formation position of the main body side slide guide part 54 formed in the lid main body 51 and the formation position of the movable side slide guide part 64 formed in the movable cover 61 corresponding thereto are limited to the side wall portion as in this embodiment. It is not a thing. For example, if a mechanism for preventing the movable lid 61 from falling off is provided, the slide guide portion can be formed on the top plate portion.

8 to 11 show a second embodiment of the printer of the present invention.
8A and 8B are explanatory views showing a state in which the movable lid of the paper tray of the present embodiment is closed, in which FIG. 8A is a plan view, FIG. 8B is a side view, and FIG. (D) is principal part expansion explanatory drawing of (C), (E) is principal part expansion explanatory drawing which shows the state just before (D) at the time of closing a movable cover. 9A and 9B are explanatory views showing a state where the movable lid of the paper tray of the present embodiment is opened and the opening for conveyance is opened, where FIG. 9A is a plan view, FIG. 9B is a side view, and FIG. ) Is a cross-sectional view taken along the line CC of (A). Further, FIG. 10 is an explanatory diagram for explaining the relationship between the tray holding unit and the like before the paper tray is mounted on the printer body of the printer of the present embodiment and the paper tray, (A) is a plan view, B) is a BB cross-sectional view of (A). FIG. 11 is an explanatory diagram for explaining the relationship between the tray holding portion and the like in a state where the paper tray is mounted on the printer main body of the printer of the present embodiment, and (A) is a plan view and (B). FIG. 4 is a sectional view taken along line BB in FIG.

  In each of these drawings, the housing of the printer main body is not shown, and only the main parts related to the mounting and holding of the printer main body of the paper tray are selectively shown.

  Hereinafter, only characteristic portions different from those of the first embodiment will be described, and description of the same configuration portions will be omitted.

  As shown in FIGS. 8 and 9, the paper tray 21 of the printer of the second embodiment has a pair of movable side walls 63 of the movable lid 61 instead of the slide projections 64 as the movable side slide guide portions. Two cam grooves 69 are formed in parallel to each other toward the open upper surface of the tray body 23 in the direction opposite to the insertion direction of the paper tray 21. A pair of side walls 53 of the lid main body 51 are formed with slide projections 56 that are movably engaged in the cam groove 69 instead of the slide groove 54 as a main body side slide guide portion.

  In the first embodiment, the lid-side hook 66 formed on the pair of movable side walls 63 of the movable lid 61 is formed on the upper surface of the movable top plate 62 of the movable lid 61 in the present embodiment. The printer side hooks 8 formed on the tray mounting portion 3 of the printer main body 1 are also formed on the movable lid 61 at two symmetrical positions from the center in the width direction. Corresponding to the hook 66, it is formed at a position in the tray mounting portion 3 that can be engaged.

  Specifically, each of the lid-side hooks 66 formed on the movable top plate 62 is formed with a U-shaped notch connecting the opposite directions of the paper tray 21 in the opposite direction, and the notch is surrounded by three sides. A hook 66b having a triangular cross section is formed at the free tip of the piece 66a. Further, a convex portion 70 for securing a gap having a dot-like cross section is formed on the back surface side of the hook portion 66b of the movable top plate 62. A concave portion 57 into which the convex portion 70 is fitted when the movable lid 61 covers the conveying opening 22 is formed on the upper surface of the lid body 51 on the leading end side in the insertion direction of the paper tray 21. . The protrusion dimension of the convex part 70 and the depth dimension of the concave part 57 are such that the hook part 66b and the printer side hook 8 remain engaged even immediately before the concave part 57, and the convex part 70 is in the concave part 57. The size of the hook portion 66b and the printer side hook 8 is released when the hook portion 66b is fitted.

  As described above, in the printer having the configuration of this embodiment, the cam groove 69 of the movable side slide guide portion is formed so as to be directed toward the open upper surface of the tray body 23 in the anti-insertion direction of the paper tray 21. When the lid 61 is opened and closed, the height position of the movable lid 61 can be varied, and the movable lid 61 can be reliably opened and closed when the paper tray 21 is attached to and detached from the printer main body 1.

  That is, in the first embodiment, as described above, when the paper tray 21 is pulled out from the tray mounting portion 3, in order to securely engage the lid side hook 66 and the printer side hook 8, as described above. The lid side hook from the front end of the movable lid 61 that contacts the abutting part 6 of the printer body 1 rather than the distance dimension X in the insertion / removal direction of the paper tray 21 between the abutting part 6 on the printer body 1 side and the printer side hook 8. The distance dimension Y in the insertion / removal direction of the paper tray 21 with respect to 66 must be made smaller. That is, before the tip of the movable lid 61 comes into contact with the abutting portion 6 of the printer main body 1, the lid side hook 66 has to get over the printer side hook 8 and be on the back side. For this reason, the printer-side hook 8 is easy to get over the lid-side hook 66 when the paper tray 21 is mounted on the tray mounting portion 3, and conversely, when the paper tray 21 is pulled out from the tray mounting portion 3, The cover-side hook 66 must be locked until the movable lid 61 covers the transport opening 22 and stops. As described above, the printer-side hook 8 needs to be finely adjusted with respect to the inclination angle of the hook portion 8b formed at the free end portion thereof, the elasticity of the flexible piece 8a, and the like.

  In that respect, in the printer of this embodiment, since the height position of the movable lid 61 differs when the movable lid 61 is opened and closed, the lid-side hook 66 is attached to the printer when the paper tray 21 is mounted on the tray mounting portion 3. A state in which the movable lid 61 is abutted against the abutting portion 6 without being engaged with the side hook 8 or after being lightly engaged with the tray mounting portion 3 being positioned on the back side of the formation position of the printer side hook 8. By pushing only the tray main body 23 from the rear side, the movable lid 61 is gradually raised according to the cam groove 69 of the slide guide portion. Then, the lid side hook 66 is engaged with the printer side hook 8 in a state where the flexible piece 66b is largely bent.

  When the paper tray 21 is pulled out from the tray mounting portion 3, the transport opening 22 is covered with the movable lid 61 using the engagement between the lid hook 66 and the printer hook 8. . That is, while the movable lid 61 rises greatly from the open upper surface of the tray main body 23 by the cam groove 69, that is, while a sufficient gap is secured between the lid main body 51 and the movable lid 61, the lid The side hook 66 and the printer side hook 8 are strongly engaged by a large elastic load of the flexible piece 66a of the lid side hook 66. When the movable lid 61 approaches the open upper surface of the tray main body 23 and the rising width becomes narrower, the lid-side hook 66 and the printer-side hook 8 also become less elastic and engage weakly. . In the present embodiment, as shown in FIG. 8D, the gap securing convex portion 70 formed on the back surface side of the hook portion of the movable top plate 62 is formed on the top plate 52 of the lid body 51. Until the recess 57 formed on the upper surface is fitted, that is, until the movable lid 61 covers the conveying opening 22, as shown in FIG. A gap is ensured at least by the protrusion dimension of the convex portion 70, and the lid side hook 66 and the printer side hook 8 are kept engaged. That is, the engagement between the lid hook 66 and the printer hook 8 is released when the movable lid 61 is closed. In this manner, the transport opening 22 is covered with the movable lid 61, and the engagement between the lid side hook 66 and the printer side hook 8 is released, and then the paper tray 2 is removed from the tray mounting portion. As described above, the shape and balance of the printer-side hook 8 and the lid-side hook 66 can be easily adjusted as compared with the configuration of the printer of the first embodiment.

12 and 13 show a third embodiment of the printer of the present invention.
FIG. 12 is a partially exploded perspective view for explaining a main configuration of the paper tray with respect to the printer main body of the printer in the third embodiment. FIG. 13 shows a state in which the movable lid of the paper tray of the present embodiment is closed. It is explanatory drawing shown, (A) is a top view, (B) is a side view, (C) is CC sectional drawing of (B).

  Only the characteristic portions different from the first embodiment will be described below.

  The paper tray 21 of the printer according to the third embodiment includes a mechanism that keeps the movable lid 61 in a normally closed state between the lid body 51 and the movable lid 61 by urging a spring (torsion spring) 42. Yes.

  In the present embodiment, the mechanisms are two sets of spring mechanisms disposed so as to be the left and right objects from the center in the width direction of the paper tray 21. As described above, by arranging the mechanism for holding the movable lid 61 in the normally closed state so as to be the left and right targets from the center in the width direction of the paper tray 21, the sliding movement of the movable lid 61 is stabilized without wobbling. Can be. Each spring mechanism is formed at the engagement protrusion 71 projecting from the lower surface of the movable top plate 62 of the movable lid 61 and the end of the tray body 23 in the insertion direction on the upper surface of the top plate 52 of the lid main body 51. A counterbore portion 58, a torsion spring 42 disposed on the bottom surface 58a of the counterbore portion 58, and a bottom surface 58a of the counterbore portion 58 are formed so as to extend in the insertion direction of the tray main body 23. When the movable lid 61 is disposed on the main body 51, the engaging projection 71 is composed of an opening notch 58b that is movably positioned.

  The torsion spring 42 supports a coil portion 42a on a shaft 58c suspended from the bottom surface 58a in each counterbore portion 58, and one arm is a column suspended from the bottom surface 58a as a fixed arm 42b. The movement is restricted by being positioned in a gap formed between the portion 58 d and the peripheral wall of the spot facing portion 58. The other arm is engaged as a movable arm 42c with an engaging projection 71 formed on the back surface of the movable lid 61, and when the movable arm 42c is in a free state without applying a load to the torsion spring 42, The movable lid 61 slides so that the front end side thereof extends in the insertion direction side of the paper tray 21 in the lid main body 51, protrudes from the lid main body 51 to the front end side, and is supported in a cantilever manner. Thus, the transfer opening 22 is covered. Further, the movable lid 61 is slid so as to push back in the counter-insertion direction of the tray body 23 while applying a load to the torsion spring 42, and the movable top plate 62 is positioned so as to overlap the top plate 52 of the lid body 51. Thus, the conveyance opening 22 is configured to be opened in a state where paper can be fed.

  In other words, in the printer of this embodiment, the torsion spring 42 of the spring mechanism always urges the movable lid 61 in the insertion direction of the paper tray 21 via the engaging protrusion 71 with which the movable arm 42c is engaged. ing. Therefore, when the paper tray 21 is inserted along the guide rail 5 while being skewed or upright with respect to the printer main body 1 in a tray insertion / removal opening formed in the housing of the printer main body 1, the tray mounting is performed. The movable lid 61 of the paper tray 21 abuts against the abutting portion 6 of the portion 3. In this state, when the tray main body 23 is further inserted further into the back side, the movable lid 61 is prevented from entering the tray holding portion 4 side by the abutting portion 6 and resists the bias of the torsion spring. Slide and move so as to overlap the lid body 51. Therefore, the conveyance opening 22 formed on the open upper surface of the tray body 23 on the insertion direction side of the paper tray 21 is opened. Further, when the tray main body 23 itself is further inserted, the tray holding hook 68 formed at the leading end thereof is locked in the holding locking hole 10 on the printer side and is held in the tray holding portion 4. The

  When the paper tray 21 is pulled out from the tray mounting portion 3, the printer side hook 8 and the lid side hook 66 are engaged as in the first embodiment. By releasing the engagement and further releasing the engagement of the opening engagement protrusion with respect to the engagement hole, the urging force of the torsion spring 42 acts, and the movable lid 61 automatically moves the opening 22 for conveyance. It will move to cover. Therefore, the transfer opening 22 that has been opened on the top surface of the front end of the tray body 23 can be covered with the movable lid 61 again.

  As described above, in the present embodiment, the movable lid 61 is always urged by the torsion spring 42 in the direction covering the transfer opening 22, so that dust is generated from the transfer opening 22. It is possible to more surely prevent the occurrence of defective printing or printing.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible as needed.

  For example, the main body side slide guide portion and the movable side slide guide portion in the first embodiment need not be formed on the respective side walls of the lid main body 51 and the movable lid 61. For example, you may form in each top plate which opposes.

The perspective view explaining the state before mounting | wearing of the paper tray with respect to the printer main body in the printer of 1st Embodiment. The perspective view explaining the state which mounted | wore with the paper tray with respect to the printer main body in the printer of 1st Embodiment. Side view of the printer of FIG. IV-IV sectional view of the printer of FIG. 3A and 3B are explanatory diagrams illustrating a state where a movable lid of a paper tray in the printer of the first embodiment is closed, in which FIG. 3A is a plan view, FIG. 3B is a side view, and FIG. , (D) is an enlarged explanatory view of the main part of (C). 4A and 4B are explanatory diagrams illustrating a state in which the movable cover of the paper tray is opened and the conveyance opening is opened in the printer of the first embodiment, where FIG. 5A is a plan view, and FIG. Figure, side view, (C) is an enlarged explanatory view of the main part of (B), (D) is a perspective view 2A and 2B are explanatory diagrams illustrating a relationship between a tray holding unit and a paper tray of the printer according to the first embodiment, in which FIG. 3A is a plan view, FIG. 3B is a side view, and FIG. Figure 4A and 4B are explanatory diagrams illustrating a state in which a movable lid of a paper tray in a printer according to a second embodiment is closed, in which FIG. 5A is a plan view, FIG. 5B is a side view, and FIG. , (D) is a main part enlarged explanatory view of (C), (E) is a main part enlarged explanatory view showing a state immediately before (D) when closing the movable lid. 4A and 4B are explanatory diagrams illustrating a state in which a movable cover of a paper tray is opened and a conveyance opening is opened in the printer of the second embodiment, where FIG. 5A is a plan view, FIG. 5B is a side view, and FIG. CC sectional view of A) 4A and 4B are explanatory diagrams for explaining a relationship between a tray holding unit and the like before the paper tray is mounted on the printer main body of the printer according to the second embodiment, and a paper tray. FIG. BB sectional view of 4A and 4B are explanatory diagrams for explaining a relationship between a paper tray and a tray holding unit in a state where a paper tray is mounted on a printer main body of a printer according to a second embodiment. FIG. BB cross section The partially exploded perspective view for demonstrating the principal part structure of the paper tray with respect to the printer main body of the printer of 3rd Embodiment. FIG. 10 is an explanatory diagram illustrating a state in which a movable lid of a paper tray is closed in a printer according to a third embodiment, where (A) is a plan view, (B) is a side view, and (C) is a cross-sectional view taken along line CC in (B).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printer main body 2 Side wall member 3 Tray mounting part 4 Tray holding part 5 Guide rail 6 Abutting part 7 Printer side latching protrusion 8 Printer side hook 8a Flexible piece 8b Hook part 9 Paper guide part 10 Holding latch hole 21 Paper Tray 22 Transport opening 23 Tray body 24 Rail fitting part 25 Bottom plate 26 End wall 27 Open cut-out part 28 Lift-up opening 29 (Claw-like) projection 30 Side wall 41 Lid 42 Torsion spring 42a Coil part 42b Fixed arm 42c Movable arm 51 Lid body 52 Top plate 53 Side wall 54 (Main body side slide guide) Slide groove
55 Convex engagement part 56 (Main body side slide guide part) Sliding projection 57 Recessed part 58 Counterbore part 58a Bottom face 58b Opening notch part 58c Shaft 58d Pillar part 61 Movable lid 62 Movable top plate 63 Movable side wall 65 Opening prevention projection
66 Cover side hook 66a Flexible piece 66b Hook part
67 concave engaging portion 68 tray holding hook 68a flexible piece 68b hook portion 69 (movable side slide guide portion) cam groove 70 convex portion 71 engaging projection portion P paper

Claims (4)

In a printer in which a paper tray in which sheets are stacked and stored on the bottom plate of the tray body is mounted on the tray mounting portion in a state of being skewed or upright with respect to the printer body from a tray insertion / removal port formed in the printer body housing ,
At the back of the tray mounting portion, a tray holding portion that holds the front end side portion in the insertion direction of the paper tray of the tray main body to be inserted is disposed.
The tray holding portion is provided with a paper guide portion that protrudes into the tray main body when the paper tray is attached to the printer main body and pushes the paper stored in the tray main body in the reverse insertion direction of the paper tray.
An opening notch for positioning the paper guide when the paper tray is attached to the printer main body is formed on the end wall and the bottom plate on the front side in the insertion direction of the paper tray of the tray main body,
The upper surface of the end wall on the leading end side in the insertion direction of the tray main body protrudes with a dimension equal to or smaller than the protruding dimension in the insertion direction of the paper tray in the tray main body of the paper guide portion, and moves the paper in the direction of the conveyance opening. A printer characterized in that a restricting protrusion is formed. A lid main body having a top plate covering an open top surface excluding the opening for conveyance and a pair of side walls vertically extending from the side of the top plate; and parallel to the top plate outward of the top plate of the lid main body A movable lid having a pair of movable side walls arranged and extending from the side walls of the movable top plate and covering the transfer opening and parallel to the side walls, respectively. And consist of
The movable lid is configured to engage a main body side slide guide portion formed on the lid body and a movable side slide guide portion formed on the movable lid on the leading end side in the insertion direction of the paper tray of the lid body. The lid body is slidably disposed in the insertion / removal direction of the paper tray, and includes a lid body having a lid side hook formed on the outer surface of the movable lid,
Abutting the end of the movable tray on the side in the insertion direction of the paper tray when the paper tray is attached to the printer main body on the front side in the insertion direction of the paper tray from the tray holding portion in the tray mounting portion of the printer main body Part is formed,
A main body side hook for engaging the lid side hook when the paper tray is removed from the printer main body is disposed on the near side of the tray mounting portion of the printer main body in the insertion direction of the paper tray. The printer according to claim 1. The main body side slide guide portion is formed on a pair of side walls of the lid body, and the movable side slide guide portion is formed on the movable lid,
Either one of the main body side slide guide part and the movable side slide guide part is formed as a cam groove heading upward in the counter-insertion direction of the paper tray,
The other of the main body side slide guide portion and the movable side slide guide portion is formed as a convex engagement portion that is movably engaged in the cam groove. Printer. A lid main body having a top plate covering an open top surface excluding the opening for conveyance and a pair of side walls vertically extending from the side of the top plate; and parallel to the top plate outward of the top plate of the lid main body A movable lid having a pair of movable side walls arranged and extending from the side walls of the movable top plate and covering the transfer opening and parallel to the side walls, respectively. And consist of
The movable lid is configured to engage a main body side slide guide portion formed on the lid body and a movable side slide guide portion formed on the movable lid on the leading end side in the insertion direction of the paper tray of the lid body. , Slidably arranged in the insertion and removal direction of the paper tray with respect to the lid body, and equipped with a mechanism for holding the movable lid in a normally closed state by biasing a spring,
When the paper tray is attached to the printer body from the tray holding part of the tray mounting part of the printer main body, the end of the movable tray on the side of the paper tray is applied when the paper tray is attached to the printer main body. The printer according to claim 1, wherein a portion is formed.

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