JP2014144862A - Ejected sheet storage device and image formation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ejected sheet storage device capable of appropriately aligning positions of each sheet in a sheet ejection direction on an ejected sheet table.SOLUTION: An ejected sheet storage device 30 includes: an ejected sheet table 31 having an ejected sheet placing surface 31a on which sheet P ejected in a sheet ejection direction Cd is loaded; and an ejected sheet end fence 32 provided at the ejected sheet table 31 for regulating a loading position of the sheet P in the sheet ejection direction Cd at the ejected sheet placing surface 31a. The ejected sheet end fence 32 has: a holding plate part 36 standing from the ejected sheet placing surface 31a; and a piezoelectric sheet part 37 whose deflection level is changed by supply of electric power provided at the vicinity of the holding plate part 36 and an upstream side in the sheet ejection direction Cd from the holding plate part 36 standing from the ejected sheet placing surface 31a so that an upper end part 37a is positioned in an ejection range of the sheet P by being deflected toward the upstream side.

Description

  The present invention relates to a paper discharge storage device that stacks and stores paper on which an image is formed, and an image forming apparatus including the paper discharge storage device.

  Conventionally, in image forming apparatuses such as stencil printing apparatuses and copiers, it has been considered to use a paper discharge accommodating apparatus that stacks and accommodates sheets discharged after image formation. In the paper discharge container, a paper discharge end fence provided in a paper discharge direction (hereinafter referred to as a paper discharge direction) on a paper discharge tray on which discharged paper is stacked, and a direction perpendicular to the paper discharge direction In some cases, a paper discharge side fence that is paired in a direction (hereinafter referred to as a discharge orthogonal direction) is provided. In such a paper discharge container, the paper position in the paper discharge direction on the paper discharge tray is determined by applying the discharged paper to the paper discharge end fence. Further, in this paper discharge storage device, both side edges positioned in the discharge orthogonal direction on the paper are applied to the corresponding discharge side fences to determine the position of the paper in the discharge orthogonal direction on the paper discharge table. As a result, in the paper discharge receiving apparatus having the above-described configuration, it is possible to arrange the sequentially discharged paper sheets and stack them on the paper discharge tray.

  Here, in the paper discharge end fence described above, it is necessary to prevent the hit paper from bouncing upstream in the paper discharge direction while suppressing the occurrence of collision noise and vibration noise caused by the paper hitting. For this reason, in the above-described paper discharge container, it is considered that the paper discharge end fence is formed by the paper discharge front end pressing plate rising from the paper discharge stand and the thin plate elastic member provided on the upstream side in the paper discharge direction. (For example, refer to Patent Document 1). The thin plate elastic member is provided so as to be bent while being inclined toward the upstream side in the paper discharge direction by its own weight with respect to the paper discharge front end pressing plate. In this paper discharge container, the discharged paper hits the thin plate elastic member of the paper discharge end fence, and the thin plate elastic member bends and deforms to absorb the kinetic energy accompanying the discharge (progress) of the paper. For this reason, in the above-described paper discharge storage device, it is possible to prevent the hit paper from bouncing back to the upstream side in the paper discharge direction while suppressing the occurrence of collision noise and vibration sound due to the paper hitting, Sequentially discharged sheets can be aligned and stacked on a sheet discharge table.

  However, the kinetic energy associated with the discharge (progress) varies depending on the type and size of the paper, the printing speed (discharge speed), and the temperature and humidity of the installed location. On the other hand, in the above-described discharge accommodating device, a discharge end fence is formed by the discharge leading end pressing plate and the thin elastic member that bends while being inclined toward the upstream side in the sheet discharge direction by its own weight. Therefore, there is room for improvement from the viewpoint of loading paper more appropriately.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a paper discharge container that can appropriately align the position of each paper in the paper discharge direction on the paper discharge table.

  According to a first aspect of the present invention, there is provided a paper discharge receiving device that forms a paper discharge placement surface on which paper discharged in the paper discharge direction is stacked, and the paper discharge direction on the paper discharge placement surface in the paper discharge direction. A paper discharge end fence provided on the paper discharge stand to regulate the stacking position of the paper, the paper discharge end fence including a press plate portion erected from the paper discharge mounting surface and the press plate The upper end portion is positioned in the discharge range of the paper by being bent from the discharge placement surface while standing up from the discharge platen surface in the vicinity of the pressing portion and upstream of the pressing plate portion in the paper discharge direction. And a piezoelectric sheet portion whose degree of deflection changes with the supply of electric power.

  In the paper discharge container according to the present invention, the position of each paper in the paper discharge direction on the paper discharge table can be properly aligned.

1 is an explanatory diagram illustrating a configuration of a stencil printing apparatus 10 as an embodiment of an image forming apparatus including a paper discharge storage device 30 according to a first exemplary embodiment of the present invention. FIG. 3 is an explanatory diagram illustrating a configuration of the paper discharge storage device 30 in a schematic perspective view. FIG. 6 is an explanatory diagram showing the configuration of the paper discharge storage device 30 as seen from the discharge orthogonal direction Rd. FIG. 6 is an explanatory diagram showing the configuration of the paper discharge storage device 30 as seen from the upstream side in the paper discharge direction Cd. FIG. 10 is an explanatory diagram illustrating a state in which the degree of bending (curving) of the piezoelectric sheet portion 37 of the paper discharge end fence 32 is adjusted. 4A and 4B are explanatory diagrams for explaining the operation of the piezoelectric sheet portion 37 of the paper discharge end fence 32, where FIG. (C) shows a state in which the sheet P slides down along the piezoelectric sheet portion 37 (the end-side discharge guide surface 37b). FIG. 6 is an explanatory view similar to FIG. 3 for explaining the configuration of a paper discharge end fence 322 in the paper discharge storage device 302 of Embodiment 2. FIG. 10 is an explanatory view similar to FIG. 3 for explaining the configuration of a paper discharge end fence 323 in a paper discharge storage device 303 of another embodiment A. FIG. 10 is an explanatory view similar to FIG. 3 for explaining the configuration of a paper discharge end fence 324 in a paper discharge storage device 304 of another embodiment B. FIG. 6 is an explanatory diagram illustrating a configuration of a paper discharge end fence 324 with a schematic perspective view. FIG. 10 is an explanatory view similar to FIG. 3 for explaining the configuration of a paper discharge end fence 325 in a paper discharge storage device 305 of another embodiment C.

  Embodiments of a paper discharge container according to the present invention and an image forming apparatus including the same will be described below with reference to the drawings.

  A schematic configuration of a paper discharge storage device 30 as an embodiment of a paper discharge storage device according to the present invention and a stencil printing apparatus 10 as an embodiment of an image forming apparatus including the same is shown in FIGS. It explains using. In FIGS. 5 and 6, the state in which the piezoelectric sheet portion 37 bends and the state in which the paper P slides down is emphasized for easy understanding, but this does not necessarily match the actual mode.

  As shown in FIG. 1, the stencil printing apparatus 10 is provided with a document reading unit 11, a plate making unit 12, a printing unit 13, a paper feeding unit 14, a paper discharging unit 15, and a plate discharging unit 16 in a main body cabinet 10 a that defines the outer shape thereof. And are provided. The document reading unit 11 is provided with a separation roller 11a, a pair of front document transport rollers 11b and 11c, and a pair of rear document transport rollers 11d and 11e that are rotatable. In the document reading unit 11, the separation roller 11a, the front document transport roller pair 11b, 11c, and the rear document transport roller pair 11d, 11e are appropriately rotated by a driving unit (not shown), thereby receiving the document. The document 17 set on the table 11f is conveyed onto the contact glass 11g. The document tray 11f is provided at the upper part of the main body cabinet 10a. The document reading unit 11 includes a fluorescent lamp 11h, a mirror 11i, a lens 11j, and an image sensor 11k. The fluorescent lamp 11h is provided below the contact glass 11g, and the mirror 11i is provided at a position for receiving reflected light from the document 17 on the contact glass 11g illuminated by the fluorescent lamp 11h. The lens 11j is provided in the optical path of the reflected light from the mirror 11i, and the image sensor 11k is provided at a position for receiving the reflected light collected by the lens 11j. The image sensor 11k is composed of a solid-state imaging device such as a CCD (charge coupled device) image sensor or a CMOS image sensor, and photoelectrically converts the received reflected light and outputs it as an electrical signal. Although not shown, the document reading unit 11 is provided with an A / D conversion board in the main body cabinet 10a. The A / D conversion board converts an electrical signal output from the image sensor 11k into a digital image signal. To do. In the document reading unit 11, the document 17 conveyed on the contact glass 11g is illuminated with a fluorescent lamp 11h, and the reflected light is received by the image sensor 11k through the mirror 11i and the lens 11j, thereby generating a digital image signal. The image signal is appropriately subjected to image processing and stored in a storage unit (not shown). This is an image reading process in the document reading unit 11. In the document reading unit 11, the document 17 whose image has been read is discharged onto a document tray 11l provided in the upper part of the main body cabinet 10a. Further, in the document reading unit 11, a separation blade 11m is provided above the separation roller 11a, and when there are a plurality of documents 17 set on the document receiving tray 11f, the lowermost layer is separated by the separation blade 11m. Only one sheet (original 17) is conveyed to perform the image reading process.

  In parallel with the image reading process by the document reading unit 11, the plate making unit 12 forms a perforation pattern portion on the unmade master 18, that is, the master 18 on which the perforation pattern portion is not formed. In the plate making unit 12, a punching pattern unit is formed in the master 18 based on the image signal stored in the storage unit, that is, the image signal generated by the document reading unit 11. The master 18 has, for example, a so-called laminate structure in which a thermoplastic resin film and a support body provided with a large number of holes for supporting it are bonded together. The master 18 is provided by forming a master roll 18b by being wound around the core tube 18a.

  The plate making unit 12 is provided with a platen roller 12a and a pair of feed rollers 12b and 12c that can be rotated by a drive motor. In the plate making section 12, the platen roller 12a and the feed roller pairs 12b and 12c are appropriately rotated to draw out the non-perforated master 18 from the master roll 18b. The plate making section 12 is provided with a thermal head 12d pressed against the platen roller 12a, and the drawn master 18 is pressed against the thermal head 12d. The thermal head 12d is configured by providing minute heating elements (not shown) in the main scanning direction. The thermal head 12d selectively heats each heating element in accordance with the image signal stored in the storage unit described above, thereby selectively selecting the thermoplastic resin film of the master 18 pressed against the platen roller 12a. A hole is appropriately melted at a certain position to form a hole pattern portion corresponding to image information. For this reason, the plate making unit 12 passes the non-perforated master 18 between the platen roller 12a and the thermal head 12d, thereby perforating based on the image signal stored in the storage unit, that is, the image signal generated by the document reading unit 11. A pattern portion is formed on the master 18 for plate making. This is the plate making process in the plate making unit 12. The plate-making unit 12 is provided with a pair of plate-feeding rollers 12e and 12f that can be rotated by a drive motor. The plate making unit 12 is provided with a cutter 12g between the platen roller 12a and the feed roller pairs 12b and 12c. The master 18 is made by cutting the master 18 with the cutter 12g in the plate feeding process described later. Let 18 be a constant length dimension.

  The printing unit 13 includes a printing drum 13 a that wraps the master 18 that has been made from the plate making unit 12 around the outer peripheral surface. The printing drum 13a has a cylindrical shape, and is configured by being provided with a plate cylinder in which a large number of apertures that allow printing ink to pass therethrough are formed (so-called porous structure). The printing drum 13a can be rotated about its own central axis by the driving device. An ink roller 13b and a doctor roller 13c are provided inside the printing drum 13a. The ink roller 13b rotates in contact with the inner peripheral surface of the printing drum 13a. The doctor roller 13c is arranged at a slight interval from the ink roller 13b, and forms an ink reservoir 13d between the doctor roller 13c and the ink roller 13b. On the inner peripheral side of the printing drum 13a, ink is supplied from the ink supply distributor to the ink reservoir 13d, and the ink roller 13b is rotated in the same direction as the rotation direction of the printing drum 13a in synchronization with the rotation speed. For this reason, in the printing drum 13a, the ink is supplied to the inner peripheral side by the ink roller 13b rotating in contact with the inner peripheral surface, and the ink oozes out from each opening to the outer peripheral surface.

  In the printing unit 13, a master clamper 13e is provided on a part of the outer peripheral surface of the printing drum 13a. The master clamper 13e is openable and closable with respect to the outer peripheral surface of the printing drum 13a. Clamp (hold). In the printing drum 13a, by rotating and driving in the direction of the arrow A1, the master 18 having its front end clamped (held) by the master clamper 13e is gradually wound around the outer peripheral surface. When the master 18 is completely wound around and mounted on the outer peripheral surface of the printing drum 13a, the plate feeding process by the plate making unit 12 is completed. In the printing drum 13a, in cooperation with a press roller 13f described later, the master 18 is brought into close contact with the outer peripheral surface by the ink that has oozed out from each opening, and the ink oozes out from the perforated pattern portion of the master 18. The paper P is sent from the paper supply unit 14 to the printing drum 13a.

  The paper supply unit 14 appropriately supplies (so-called paper supply) the paper P stacked on the paper supply table 14a provided on the right side of the print drum 13a toward the print drum 13a. In the paper supply unit 14, a paper supply roller 14b and a pair of separation rollers 14c and 14d are rotatably provided, and the uppermost sheet (paper P) of the paper P stacked on the paper supply table 14a. ) Toward the feed roller pair 14e and 14f (see arrow A2). Hereinafter, the direction in which the paper P is transported is referred to as a paper transport direction A2. The feed roller pairs 14e and 14f are rotationally driven at a predetermined timing synchronized with the rotation of the printing drum 13a, and feed the conveyed paper P between the printing drum 13a and the press roller 13f.

  The press roller 13f is disposed opposite to the printing drum 13a below the printing drum 13a in the printing unit 13, and can rotate about its own central axis. The press roller 13f is supported by being able to be pressed against the printing drum 13a (the outer peripheral surface) and separated from the printing drum 13a (the outer peripheral surface) by a displacement mechanism. The press roller 13f is usually placed at a position away from the printing drum 13a, and when the paper P reaches the printing drum 13a, it is lifted by a displacement mechanism and pressed against the outer peripheral surface of the printing drum 13a. Therefore, the paper P supplied between the printing drum 13a and the press roller 13f is pressed against the master 18 mounted on the outer peripheral surface of the printing drum 13a, and the ink that has oozed out from the perforated pattern portion of the master 18 is transferred. Relocated. As a result, an ink image corresponding to an image formed by the punching pattern portion of the master 18 is printed on the paper P (a printed image is formed). Thereby, the printing process in the printing part 13 is complete | finished. Therefore, the printing unit 13 functions as an image forming mechanism that forms a print image on the paper P. The paper P on which the print image is formed is sent to the paper discharge unit 15.

  The paper discharge unit 15 includes a peeling claw 15a and a transport unit 15b. The peeling claw 15a is fixedly provided at a position close to the printing drum 13a (the outer peripheral surface thereof), and the paper P attached to the printing drum 13a (master 18) by ink is rotated along with the rotation of the printing drum 13a. Peel off. The transport unit 15b includes a transport belt 15e that is stretched between a suction paper discharge inlet roller 15c and a suction paper discharge roller 15d, and a suction fan 15f that is disposed below the transport belt 15e. The transport unit 15b moves the transport belt 15e while pressing the paper P that has been peeled off from the printing drum 13a (master 18) onto the transport belt 15e by suction of the suction fan 15f. It is transported to be discharged into the storage device 30 (see arrow Cd). Hereinafter, the direction in which the paper P is conveyed and discharged is referred to as a paper discharge direction Cd. The transport unit 15b can adjust the discharge (transport) speed of the paper P, and can be adjusted to the rotational speed of the printing drum 13a, that is, the printing speed.

  In the transport unit 15b, a seating member 15g is provided on the discharge (transport) path of the paper P by the transport belt 15e. The seating member 15g increases the apparent waist strength of the paper P by deforming it into a U shape so that the paper P being conveyed is curved when viewed in the paper discharge direction Cd. In the seating member 15g, the degree of curvature of the paper P can be appropriately changed according to the type of the paper P.

  The transport unit 15b deforms the paper P, which has been peeled off from the printing drum 13a (master 18) by the peeling claw 15a, into a U-shape by the seating member 15g, and discharges the paper discharge container 30 (its discharge) in the paper discharge direction Cd. The paper is discharged onto the paper table 31). The paper discharge storage device 30 sequentially stacks and stores the paper P on which the print image discharged from the paper discharge unit 15 (the transport unit 15b) is formed, that is, the paper P that has been printed. The configuration of the paper discharge accommodation device 30 will be described in detail later. Accordingly, the paper discharge unit 15 functions as a paper discharge mechanism that discharges the paper P on which the print image is formed in the paper discharge direction Cd.

  The plate discharging unit 16 includes a pair of peeling rollers 16a and 16b, a pair of peeling rollers 16c and 16d, a pair of conveying belts 16e and 16f, a plate discharging box 16g, and a compression plate 16h. The conveying belt pairs 16e and 16f are provided so as to be spanned between the peeling roller pairs 16a and 16b and the peeling roller pairs 16c and 16d, respectively. The plate removal box 16g is provided at the end of the pair of conveyor belts 16e and 16f. The compression plate 16h is provided so as to be movable in the vertical direction above the discharge box 16g. The conveyor belt pairs 16e and 16f peel off the used master 18 wound around the printing drum 13a (the outer peripheral surface) from the printing drum 13a as the printing drum 13a rotates in the direction opposite to the arrow A1. And discharged into the discharge box 16g. In the plate discharge box 16g, the used master 18 discharged is compressed by moving the compression plate 16h downward.

  In the stencil printing apparatus 10, an image reading process is performed by the document reading unit 11 on the document 17 set on the document tray 11f of the main body cabinet 10a, and a plate making process is performed by the plate making unit 12 based thereon. At this time, in the stencil printing apparatus 10, the used master 18 wound around the printing drum 13 a is discharged to the plate discharging unit 16 (plate discharging process), and the master 18 based on the image signal from the document reading unit 11 is used by the plate making unit 12. Plate making is performed (plate making process), and the master 18 after the plate making is wound around the printing drum 13a (plate feeding process). Further, in the stencil printing apparatus 10, at the time of printing, the paper P is sent out from the paper feeding unit 14 in synchronization with the master 18 wound around the printing drum 13a (paper feeding process), and the paper P is fed by the press roller 13f. Pressed against the master 18 of the printing drum 13a. As a result, the ink inside the printing drum 13a reaches the paper P via the master 18, and an image (print image) is formed on the paper P (printing process). Of these, the first printing is so-called plate printing in which the master 18 that has been subjected to plate making is brought into close contact with the printing drum 13a (outer peripheral surface) due to the adhesive force of the ink that has oozed out of the printing drum 13a (outer peripheral surface). The paper P on which the print image is formed by the paper feeding process and the printing process is discharged onto the paper discharge storage device 30 (the paper discharge tray 31) by the paper discharge unit 15 (the transport unit 15b) (the paper discharge process). ), Which are sequentially stacked and stored. In the stencil printing apparatus 10, the document reading unit 11, the plate making unit 12, the printing unit 13, the paper feeding unit 14, the paper discharging unit 15, and the plate discharging unit 16 are appropriately controlled under the control of the control unit (see reference numeral 81 in FIG. 3). By being driven, the series of operations described above are executed.

  As shown in FIGS. 1 to 4, the paper discharge accommodating device 30 is configured such that a paper discharge end fence 32 and a pair of paper discharge side fences 33 are provided on a paper discharge table 31. The paper discharge accommodating device 30 (the paper discharge tray 31) corresponds to the main body cabinet 10a (the paper discharge unit 15) corresponding to the paper discharge direction Cd in which the paper P is discharged from the paper discharge unit 15 (the transport unit 15b). The positional relationship is determined. The paper discharge tray 31 constitutes a place where the paper P discharged from the paper discharge unit 15 (the transport unit 15b) is stacked and stored, and has a flat plate shape as a whole. The paper discharge table 31 is rotatably attached to the main body cabinet 10a via an attachment shaft 10b provided on the main body cabinet 10a. The paper discharge tray 31 forms a paper discharge placement surface 31a on which the paper P is stacked on a flat upper surface.

  As shown in FIGS. 2 to 4, the paper discharge end fence 32 is viewed in the paper discharge direction Cd, on the paper discharge unit 15 (its transport unit 15b) side on the paper discharge placement surface 31a, that is, in the paper discharge direction Cd. It is provided at the end opposite to the upstream side (downstream side in the paper discharge direction Cd) (see FIG. 1). The paper discharge end fence 32 has a flat plate shape as a whole and stands up from the paper discharge placement surface 31a, that is, from the paper discharge placement surface 31a in a direction orthogonal to the paper discharge placement surface 31a. It is stretched. The paper discharge end fence 32 is provided orthogonal to the paper discharge direction Cd, and is discharged from the paper discharge unit 15 (the transport unit 15b) to move the leading end of the paper P that moves in the paper discharge direction Cd ( The front end when moving in the paper discharge direction Cd can be hit. For this reason, the paper discharge end fence 32 determines the position of the paper P discharged from the paper discharge unit 15 (its transport unit 15b) onto the paper discharge tray 31 in the paper discharge direction Cd on the paper discharge tray 31. It has a function. In other words, the paper discharge end fence 32 has a function of regulating the stacking position of the paper P in the paper discharge direction Cd on the paper discharge placement surface 31a (on the paper discharge tray 31). The configuration of the paper discharge end fence 32 will be described in detail later.

  The paper discharge side fences 33 are provided in pairs at both ends as viewed in the direction perpendicular to the paper discharge direction Cd (hereinafter referred to as the discharge orthogonal direction Rd) on the paper discharge mounting surface 31a of the paper discharge tray 31. It has been. Each discharge side fence 33 has a flat plate shape as a whole, and forms a flat side discharge guide surface 33a on the surfaces facing each other. Each of the paper discharge side fences 33 stands from the paper discharge placement surface 31a, that is, extends from the paper discharge placement surface 31a in a direction orthogonal to the paper discharge placement surface 31a. In the both paper discharge side fences 33, the side side paper discharge guide surfaces 33a are opposed to each other in the discharge orthogonal direction Rd while being orthogonal to the discharge orthogonal direction Rd. For this reason, in this pair of paper discharge side fences 33, each side-side paper discharge guide surface 33a has both sides as viewed in the discharge orthogonal direction Rd of the paper P discharged from the paper discharge section 15 (its transport unit 15b). It is parallel to the edge. In each paper discharge side fence 33, the side P discharge guide surface 33 a is applied to each paper P discharged from the paper discharge unit 15 (its transport unit 15 b), and the paper P is moved along the side discharge guide surface 33 a. To drop. For this reason, the pair of paper discharge side fences 33 on the paper discharge table 31 (paper discharge placement surface 31a) of the paper P discharged from the paper discharge unit 15 (its transport unit 15b) onto the paper discharge table 31. The position in the discharge orthogonal direction Rd can be determined. In the first embodiment, each paper discharge side fence 33 is provided upright from the paper discharge placement surface 31a with the side side paper discharge guide surfaces 33a orthogonal to the paper discharge placement surface 31a. However, the angle of the side discharge guide surface 33a with respect to the discharge placement surface 31a may be set as appropriate, and is not limited to the first embodiment.

  In the following description, in the discharge orthogonal direction Rd, the direction toward the center position on the discharge placement surface 31a of the discharge table 31 is the discharge orthogonal direction Rd inside, and the opposite side is the discharge orthogonal direction Rd outside. . Similarly, in the paper discharge direction Cd, the direction toward the center position on the paper discharge placement surface 31a of the paper discharge tray 31 is the paper discharge direction Cd inside, and the opposite side is the paper discharge direction Cd outside. Here, since the paper discharge side fences 33 are provided in a pair in the discharge orthogonal direction Rd, they face each other inside the paper discharge direction Cd when viewed from each other. Also, the direction perpendicular to the paper discharge direction Cd and the discharge orthogonal direction Rd, that is, the direction orthogonal to the plane including the paper discharge direction Cd and the discharge orthogonal direction Rd is the vertical direction Ud, and when viewed from the front in FIG. The upper side is Ud and the opposite side is the lower side in the vertical direction Ud.

  As shown in FIG. 2, the discharge tray 31 is provided with an end-side slide mechanism 34 and a pair of side-side slide mechanisms 35 on the discharge placement surface 31 a. The end-side slide mechanism 34 is capable of moving in the sheet discharge direction Cd on the sheet discharge platform 31 (its sheet discharge mounting surface 31a) of the sheet discharge end fence 32. And an end-side slider portion 34b. The end-side guide portion 34a is provided to extend in parallel with the paper discharge direction Cd at an intermediate position viewed in the discharge orthogonal direction Rd on the discharge placement surface 31a. The end-side slider portion 34b is movable along the direction in which the end-side guide portion 34a extends. Further, although not shown, the end side slider portion 34b is provided with a lock portion for preventing movement relative to the end side guide portion 34a, and it is possible to prevent the movement and release the prevention. Yes. A paper discharge end fence 32 is provided on the end-side slider portion 34b. For this reason, the paper discharge end fence 32 can be moved by the end side slide mechanism 34 in the direction in which the end side guide portion 34a extends, that is, the paper discharge direction Cd with respect to the paper discharge table 31 (the paper discharge placement surface 31a). It is said that. The paper discharge end fence 32 is supported by the end-side slider portion 34b so as to be rotatable about the end-side rotation axis 32a. The paper discharge end fence 32 is tilted inward in the paper discharge direction Cd with the end-side rotation axis 32a as the center of rotation, so that the paper discharge end fence 32 is tilted inward in the paper discharge direction Cd and discharged on the paper discharge tray 31. Can be folded up.

  The side slide mechanisms 35 are provided in pairs so as to correspond to the paper discharge side fences 33 that are paired in the discharge orthogonal direction Rd. The side-side slide mechanism 35 enables movement in the discharge orthogonal direction Rd on the discharge table 31 (the discharge placement surface 31a) of the corresponding discharge side fence 33, and the side-side guide portion. 35a and a side slider portion 35b. Each of the side guide portions 35a is provided to extend in parallel with the discharge orthogonal direction Rd at an intermediate position viewed in the paper discharge direction Cd on the discharge placement surface 31a. Each side slider 35b is movable along the direction in which the corresponding side guide 35a extends. Each side-side slider portion 35b is provided with a lock portion that prevents movement with respect to the side-side guide portion 35a (not shown), and can prevent the movement and release the prevention. ing. Each side slider 35b is provided with a corresponding paper discharge side fence 33. For this reason, each paper discharge side fence 33 is moved by the side slide mechanism 35 in the direction in which the side guide portion 35a extends, that is, the discharge orthogonal direction Rd with respect to the paper discharge table 31 (paper discharge placement surface 31a). It is possible. The paper discharge side fence 33 is supported by the side slider 35b so as to be rotatable about the side rotation axis 33b. The sheet discharge side fence 33 is inclined inwardly in the discharge orthogonal direction Rd with the side-side rotation axis 33b as the rotation center, so that the sheet discharge side fence 33 is tilted inward in the discharge orthogonal direction Rd and discharged in the discharge table 31. Can be folded up. In the first embodiment, the side sliders 35b are connected by a rack and pinion mechanism (not shown). When one of them is moved, the other is also linked (when one is moved outward, the other is also moved outward). ) Is configured to. Note that the both side slider portions 35b may be configured not to be linked to each other.

  The paper discharge end fence 32 and both paper discharge side fences 33 correspond to the size of the paper P to be discharged from the paper discharge unit 15 (its transport unit 15b), that is, the size of the printed paper P. The position on the paper discharge placement surface 31a) is set as appropriate. The position according to the size of the paper P is set as a standard position for each paper size in advance based on the standard size and standard thickness of the paper used in the stencil printing apparatus 10 and the image area ratio. Since it can be grasped, a scale or the like may be provided on the paper discharge tray 31 (paper discharge placement surface 31a), the end-side slide mechanism 34, the side-side slide mechanism 35, or the like. In the paper discharge storage device 30, the paper P discharged from the paper discharge unit 15 (its transport unit 15b (see FIG. 1)) is discharged on the paper discharge stand 31 (its paper discharge placement surface 31a) as described above. The paper is stacked and stored in a region surrounded by the paper discharge end fence 32 and the paper discharge side fences 33 whose positions are adjusted. Specifically, the paper P discharged from the paper discharge unit 15 (its transport unit 15 b) hits the front end of the paper discharge end fence 32, and both ends in the discharge orthogonal direction Rd are the discharge side fences 33. It hits the side discharge guide surface 33a and falls along (guided) the discharge end fence 32 and the discharge side fence 33 (the side discharge guide surface 33a). Then, the paper P is stacked on the paper discharge placement surface 31 a of the paper discharge tray 31 with both end portions being in contact with the side paper discharge guide surface 33 a of the paper discharge side fence 33. As a result, the discharged paper storage device 30 stacks and stores the discharged paper P.

  Next, a characteristic configuration of the paper discharge end fence 32 according to the first embodiment of the present invention will be described. As shown in FIG. 3, the paper discharge end fence 32 includes a pressing plate portion 36 and a piezoelectric sheet portion 37. The presser plate portion 36 has a flat plate shape as a whole and rises from the end-side slider portion 34b of the end-side slide mechanism 34, that is, with respect to the paper discharge placement surface 31a provided with the end-side slider portion 34b. Extending from the end-side slider portion 34b in a direction orthogonal to each other. The pressing plate portion 36 has a positional relationship in which the inner side surface 36a inside the paper discharge direction Cd is orthogonal to the paper discharge direction Cd. A piezoelectric sheet portion 37 is provided inside the pressing plate portion 36 in the paper discharge direction Cd.

  The piezoelectric sheet portion 37 has a thin plate shape as a whole, and is pressed from the inner side of the paper discharge direction Cd than the presser plate portion 36 in the end side slider portion 34b of the end side slide mechanism 34, that is, from the upstream side of the paper discharge direction Cd. It is provided upright along the plate portion 36 (its inner side surface 36a). In the first exemplary embodiment, the piezoelectric sheet portion 37 is provided at a distance from the presser plate portion 36 when viewed in the paper discharge direction Cd. In the first exemplary embodiment, the piezoelectric sheet portion 37 has the upper end portion 37a on the inner side in the sheet discharge direction Cd so that the distance from the inner surface 36a of the presser plate portion 36 increases as it goes upward in the vertical direction Ud. It is bent and provided. In the piezoelectric sheet portion 37, the inner surface in the paper discharge direction Cd is positioned most inside the paper discharge direction Cd in the paper discharge end fence 32. For this reason, the inner surface of the piezoelectric sheet portion 37 in the sheet discharge direction Cd is an end-side discharge guide surface 37 b that serves as a discharge guide surface in the discharge end fence 32. In this piezoelectric sheet portion 37, the upper end portion 37 a (the end-side discharge guide surface 37 b) is discharged from the upper end portion 37 a (the discharge-side placement surface 31 a) by the above-described bending. Is located.

  The piezoelectric sheet portion 37 is configured by providing a thin plate-like electrode material on both sides of a long plate-like piezoelectric material although not clearly shown. When a voltage is applied to both electrode materials with a polarity in the direction in which the piezoelectric material contracts, the piezoelectric sheet portion 37 becomes more bent (curved) and the upper end portion 37a is further displaced inward in the paper discharge direction Cd (FIG. 5) and the piezoelectric sheet portion 37 'indicated by the two-dot chain line). Further, when a voltage is applied to both electrode materials with the polarity in the direction in which the piezoelectric material extends, the piezoelectric sheet portion 37 is less bent (curved) and the upper end portion 37a is displaced outward in the paper discharge direction Cd ( (See the piezoelectric sheet portion 37 ″ indicated by an arrow A2 and a two-dot chain line in FIG. 5). Furthermore, in the piezoelectric sheet portion 37, regardless of the polarity, the amount of change in the degree of bending (curving) can be adjusted by changing the voltage applied to both electrode materials. In order to apply a voltage to both electrode materials of the piezoelectric sheet portion 37, an electric wire 37d and an electric wire 37e are provided corresponding to each electrode material.

  The electric wires 37d and 37e are connected to the control unit 81. The control unit 81 includes a storage unit 81a and a microcomputer. The operation unit 82 is connected to the control unit 81 so that an operation signal from the operation unit 82 can be input. The control unit 81 and the operation unit 82 may be provided in the paper discharge storage device 30 or may be provided in the stencil printing apparatus 10 (see FIG. 1). In the first embodiment, the control unit 81 and the operation unit 82 are provided in the stencil printing apparatus 10 (its main body cabinet 10a (see FIG. 1)). Therefore, in the first embodiment, the control unit 81 is based on the operation signal from the operation unit 82, and the document reading unit 11, the plate making unit 12, the printing unit 13, the paper supply unit 14, the paper discharge unit 15, and the plate discharge unit 16. The driving process in the above is comprehensively performed by a program stored in the storage unit 81a. In the paper discharge storage device 30 according to the first exemplary embodiment, the control unit 81 performs a driving process for the piezoelectric sheet unit 37. That is, the piezoelectric sheet portion 37 is appropriately driven under the control of the control portion 81 to adjust the degree of bending (curving). In addition, in the paper discharge storage device 30, the control unit 81 can also drive the piezoelectric sheet unit 37 based on an operation performed on the operation unit 82.

  Therefore, in the paper discharge end fence 32 of the paper discharge storage device 30, the degree of bending (curving) in the piezoelectric sheet portion 37 is adjusted under the control of the control unit 81. As described above, the piezoelectric sheet portion 37 is provided with the upper end portion 37a bent toward the inside of the paper discharge direction Cd. Therefore, as shown in FIG. 5, the end side discharge guide at the upper end portion 37a is provided. The surface 37b is positioned in the discharge range in which the paper P is discharged on the paper discharge unit 15 (its transport unit 15b) side, that is, on the upstream side in the paper discharge direction Cd. The paper P is discharged from the paper discharge unit 15 (the transport unit 15b) at a predetermined height position (a position seen in the vertical direction Ud) on the paper discharge placement surface 31a of the paper discharge tray 31. In the piezoelectric sheet portion 37, the degree of bending (curvature) is adjusted, so that the paper discharge direction of the end-side discharge guide surface 37 b at the upper end portion 37 a on the discharge placement surface 31 a of the discharge tray 31. The position at Cd is adjusted. Therefore, in the piezoelectric sheet portion 37, the position of the end-side discharge guide surface 37b applied to the discharged paper P is adjusted by adjusting the degree of bending (curving) when viewed in the paper discharge direction Cd. The A position of the upper end portion 37 a (the end side discharge guide surface 37 b) that is applied to the discharged paper P is set as a reference receiving position in the piezoelectric sheet portion 37.

  Further, in the piezoelectric sheet portion 37, the angular relationship between the position where the paper P hits at the upper end portion 37a (the end-side discharge guide surface 37b) and the paper P is adjusted in accordance with the adjustment of the reference receiving position. Specifically, on the end-side paper discharge guide surface 37b (piezoelectric sheet portion 37), as the reference receiving position is moved to the upstream side in the paper discharge direction Cd (right side when viewed from the front in FIG. 5), the paper P The angle formed between the sheet P and the sheet discharge direction Cd) is small (see the piezoelectric sheet portion 37 '). On the contrary, on the end side paper discharge guide surface 37b (piezoelectric sheet portion 37), as the reference receiving position is moved to the downstream side in the paper discharge direction Cd (left side when viewed from the front in FIG. 5), the paper P (the paper) The angle formed between the sheet P and the sheet discharge direction Cd) is increased (see the piezoelectric sheet portion 37 ″).

  In the paper discharge accommodating device 30, when the paper P is discharged from the paper discharge unit 15 (its transport unit 15b) regardless of the adjustment of the reference receiving position in the piezoelectric sheet portion 37 of the paper discharge end fence 32, Behaves like In the paper discharge accommodating device 30, as shown in FIG. 6A, the upper end portion of the piezoelectric sheet portion 37 at the adjusted reference receiving position of the paper discharge end fence 32 is bent toward the upstream side in the paper discharge direction Cd. The discharged paper P hits the end-side paper discharge guide surface 37b in 37a. Then, as shown in FIG. 6 (b), the piezoelectric sheet portion 37 moves from the reference receiving position indicated by the two-dot chain line (the position where the paper P is received) to the position indicated by the solid line (the inner surface thereof). 36a) bends toward the side (downstream of the paper discharge direction Cd) and absorbs the kinetic energy of the paper P. Then, as shown in FIG. 6C, the paper P is discharged along the end-side paper discharge guide surface 37b of the piezoelectric sheet portion 37 by absorbing a certain amount of kinetic energy in the paper discharge direction Cd. It slides down onto the paper discharge placement surface 31a of the paper base 31 (see arrow A3). At this time, the piezoelectric sheet portion 37 returns to the reference receiving position inclined toward the upstream side in the paper discharge direction Cd (see the piezoelectric sheet portion 37 indicated by a two-dot chain line in FIG. 6C). Then, the piezoelectric sheet portion 37 receives the paper P to be discharged next by the end-side paper discharge guide surface 37b at the upper end portion 37a of the adjusted reference receiving position, and the above-described operation is repeated.

  Here, since the discharge end fence 32 is provided with the presser plate portion 36, it is possible to prevent the discharged paper P from jumping out of the discharge tray 31 (the discharge placement surface 31a). It is possible to suppress an increase in the sound emitted to the surroundings. This is due to the following. The pressing plate portion 36 bends toward the outside in the sheet discharge direction Cd of the piezoelectric sheet portion 37 by applying the inner side surface 36 a to the back surface 37 c of the piezoelectric sheet portion 37 opposite to the end-side discharge guide surface 37 b. Define the maximum amount. For this reason, the piezoelectric sheet portion 37 discharges the end-side discharge guide surface 37b even when it is greatly bent outward in the paper discharge direction Cd due to the successive discharge of the paper P. It is prevented that the sheet P cannot be applied to the sheet P. As a result, the discharged paper P can be prevented from jumping out of the paper discharge tray 31 (paper discharge placement surface 31a). Moreover, in the piezoelectric sheet part 37, there exists a possibility of causing the increase in the sound which generate | occur | produces by own vibration resulting from bending greatly. However, in the piezoelectric sheet part 37, since the maximum amount of bending is prescribed | regulated by the presser plate part 36, it can suppress that the sound emitted to the circumference increases. Furthermore, regardless of the adjustment of the reference receiving position in the piezoelectric sheet portion 37 and the change in the bending due to receiving the paper P, the presser plate portion 36 is in the paper discharge direction Cd in the paper discharge tray 31 (paper discharge placement surface 31a). It exists on the outside (downstream end in the paper discharge direction Cd). For this reason, the pressing plate portion 36 can prevent the operation sound of the fan or the like of the stencil printing apparatus 10 from being transmitted outward (so-called sound insulation) together with the piezoelectric sheet portion 37 that is prevented from being greatly bent, An increase in the sound emitted to the surroundings can be suppressed.

  Here, in the discharged paper P, the kinetic energy associated with the discharge (progress) varies due to the change in the discharge state factor related to the discharge of the paper P. The discharge state factor includes a paper type setting defined by the type and size of the paper P, a printing speed, that is, a speed at which the paper P advances in the paper discharge direction Cd, and the paper discharge storage device 30 (stencil printing device 10). Refers to the ambient atmosphere at the place of installation specified by the temperature and humidity of the environment in which it is installed. In order to cope with this, the discharge receiving device 30 according to the first embodiment of the present invention can adjust the reference receiving position of the piezoelectric sheet portion 37 of the discharge end fence 32 as described above. Specifically, in the piezoelectric sheet portion 37, as shown in FIG. 5, the degree of bending (curving) is increased and the upper end portion 37a side is displaced inward in the paper discharge direction Cd (arrow A1 and piezoelectric sheet portion 37 ′). Thus, the paper P that is discharged and travels can be received by the end-side paper discharge guide surface 37b on the upstream side in the travel direction (paper discharge direction Cd). Further, in this piezoelectric sheet portion 37 ′, the distance to the pressing plate portion 36 (the inner side surface 36 a) can be increased as compared with the piezoelectric sheet portion 37 indicated by a solid line. For this reason, in the paper discharge end fence 32, the degree of bending (curving) of the piezoelectric sheet portion 37 is increased, and the reference receiving position is displaced to the upstream side in the paper discharge direction Cd. It becomes possible to absorb energy. As a result, the paper discharge end fence 32 can appropriately align the positions in the paper discharge direction Cd on the paper discharge tray 31 (paper discharge placement surface 31a) even for the paper P having a large kinetic energy.

  In addition, in this piezoelectric sheet portion 37 ′, compared to the piezoelectric sheet portion 37 indicated by a solid line, the end-side discharge guide surface 37 b and the discharged paper P (paper discharge direction Cd in which it travels) are between. The angle to be made can be reduced. Therefore, in the piezoelectric sheet portion 37 ′, the extent to which the paper P hits the end-side paper discharge guide surface 37b and bounces can be reduced as compared with the piezoelectric sheet portion 37 indicated by a solid line. Thereby, in the piezoelectric sheet portion 37 ′, the paper P applied to the end-side paper discharge guide surface 37b can be dropped while sliding along the end-side paper discharge guide surface 37b. It can absorb kinetic energy. For this reason, in the paper discharge end fence 32, the degree of bending (curving) of the piezoelectric sheet portion 37 is increased, and the reference receiving position is displaced to the upstream side in the paper discharge direction Cd. The position of the paper P in the paper discharge direction Cd on the paper discharge table 31 (paper discharge placement surface 31a) can be more appropriately aligned while absorbing energy.

  Further, the piezoelectric sheet portion 37 is discharged by reducing the degree of bending (curving) and displacing the upper end portion 37a inward in the paper discharge direction Cd (see the arrow A2 and the piezoelectric sheet portion 37 ″). The traveling paper P can be received by the end-side paper ejection guide surface 37b on the downstream side in the traveling direction (paper ejection direction Cd). In addition, in the piezoelectric sheet portion 37 ″, the distance to the pressing plate portion 36 (the inner side surface 36a) can be reduced as compared with the piezoelectric sheet portion 37 indicated by a solid line. For this reason, in the paper discharge end fence 32, the degree of flexure (curvature) of the piezoelectric sheet portion 37 is reduced, and the reference receiving position is displaced downstream in the paper discharge direction Cd, whereby a smaller movement in the paper P. It is possible to cope with energy absorption. This is because, when the kinetic energy in the paper P is small, the piezoelectric sheet portion 37 cannot be sufficiently bent toward the holding plate portion 36 (the inner side surface 36a), and the paper P discharge tray 31 (discharge) This is because the position in the paper discharge direction Cd on the paper placement surface 31a) may not be determined by the end-side paper discharge guide surface 37b. For this reason, in the paper discharge end fence 32, the degree of bending (curving) of the piezoelectric sheet portion 37 is reduced, and the reference receiving position is displaced downstream in the paper discharge direction Cd. It is possible to appropriately align the positions in the sheet discharge direction Cd on the sheet 31 (the sheet discharge mounting surface 31a).

  In addition, in the piezoelectric sheet portion 37 ″, compared to the piezoelectric sheet portion 37 indicated by a solid line, the end-side discharge guide surface 37b and the discharged paper P (the paper discharge direction Cd in which the paper P travels) are disposed. The angle made by can be increased. Therefore, the piezoelectric sheet portion 37 ″ can be easily bent by receiving the paper P by the end-side discharge guide surface 37b, as compared with the piezoelectric sheet portion 37 indicated by a solid line. . Accordingly, the piezoelectric sheet portion 37 ″ can appropriately absorb the kinetic energy of the paper P applied to the end-side paper discharge guide surface 37b by bending it. For this reason, in the paper discharge end fence 32, the degree of flexure (curvature) of the piezoelectric sheet portion 37 is reduced, and the reference receiving position is displaced downstream in the paper discharge direction Cd, whereby a smaller movement in the paper P. It is possible to appropriately absorb the energy and to align the position of the paper P in the paper discharge direction 31 on the paper discharge table 31 (paper discharge placement surface 31a) more appropriately.

  As described above, in the paper discharge accommodating device 30, the degree of bending (curving) of the piezoelectric sheet portion 37 of the paper discharge end fence 32, that is, the reference receiving position of the piezoelectric sheet portion 37 is adjusted under the control of the control unit 81. The Here, the reference receiving position of the piezoelectric sheet portion 37 is set according to the above-described discharge state factor, whereby the position of the paper P in the paper discharge direction Cd on the paper discharge tray 31 (paper discharge placement surface 31a). Enables proper alignment. As described above, this is because the kinetic energy in the discharged paper P changes according to the discharge state factor. Specifically, the reference receiving position is based on the paper type setting of the discharge state factor, that is, the standard size and standard thickness and image area ratio of the paper used in the stencil printing apparatus 10, It is possible to grasp in advance the position to be adapted for each type and size of paper. Therefore, in the paper discharge storage device 30, the reference receiving position is set in advance according to the paper type setting (for each paper type and size), and the degree of bending (curving) of the piezoelectric sheet portion 37 as each reference receiving position is set. By registering in the storage unit 81a, the degree of bending (curving) of the piezoelectric sheet unit 37 can be adjusted under the control of the control unit 81 according to the type and size of the selected paper.

  Further, the reference receiving position can grasp in advance the position adapted to each speed based on the printing speed in the stencil printing apparatus 10 among the discharge state factors, that is, the speed that advances in the paper discharge direction Cd. For this reason, in the paper discharge storage device 30, a reference receiving position is set in advance according to a print speed that can be set, and the degree of bending (curving) of the piezoelectric sheet portion 37 as each reference receiving position is registered in the storage unit 81a. Accordingly, the degree of bending (curving) of the piezoelectric sheet portion 37 can be adjusted under the control of the control unit 81 in accordance with the set printing speed.

  Further, the reference receiving position is the ambient atmosphere at the place where the paper discharge accommodating device 30 (stencil printing device 10) is installed among the discharge state factors, that is, the environment where the paper discharge accommodating device 30 (stencil printing device 10) is installed. Based on the temperature and humidity, the position adapted to each speed can be grasped in advance. For this reason, in the paper discharge storage device 30, a sensor for measuring the ambient temperature and / or humidity is provided, and a reference receiving position is set in advance according to changes in temperature and / or humidity at the installed location. The degree of bending (curving) of the piezoelectric sheet portion 37 as the receiving position is registered in the storage unit 81a. As a result, in the paper discharge storage device 30, the degree of bending (curving) of the piezoelectric sheet portion 37 is adjusted under the control of the control portion 81 in conformity with the measurement result from the sensor, that is, the ambient atmosphere in the installed location. Can do.

  In the paper discharge storage device 30 according to the first exemplary embodiment, the reference receiving position is set by combining each discharge state factor (paper type setting, printing speed, and ambient atmosphere). For this reason, in the paper discharge storage device 30, the degree of bending (curving) of the piezoelectric sheet portion 37 can be adjusted more appropriately under the control of the control portion 81.

  In addition, the control unit 81 can adjust the degree of bending (curvature) of the piezoelectric sheet unit 37 based on the operation performed on the operation unit 82, so that it is more appropriate to actually eject the paper P. The piezoelectric sheet portion 37 can be adjusted to such a degree of bending (curving). Next, an operation detection sensor for detecting the operation (deflection) of the piezoelectric sheet portion 37 is provided in the paper discharge storage device 30, and the operation is not suitable (it moves excessively or moves too slowly). In addition, the control unit 81 may adjust the degree of bending (curving) of the piezoelectric sheet unit 37 in accordance with the operation tendency (excessive or dull). As a result, in the paper discharge accommodating device 30, the paper P discharged from the paper discharge unit 15 (its transport unit 15b) is more appropriately aligned in the paper discharge direction Cd, and the paper discharge table 31 (paper discharge placement). It can be loaded on the surface 31a).

  Therefore, in the paper discharge accommodating device 30 according to the first embodiment of the present invention, the discharge end fence 32 is provided with the piezoelectric sheet portion 37 that can adjust the degree of bending (curvature). By adjusting the reference receiving position in the piezoelectric sheet portion 37, that is, the degree of bending (curving) of the piezoelectric sheet portion 37, the kinetic energy can be appropriately absorbed regardless of the difference in the kinetic energy of the discharged paper P. it can. That is, for example, when the discharged paper P is thick paper, or when the printing speed in the stencil printing apparatus 10, that is, the speed at which the paper P proceeds in the paper discharge direction Cd is high, the kinetic energy of the discharged paper P is increased. Is large, the kinetic energy of the discharged paper P can be appropriately absorbed by increasing the degree of bending (curving) of the piezoelectric sheet portion 37. Further, for example, when the discharged paper P is thin paper or the printing speed in the stencil printing apparatus 10, that is, the speed of progress of the paper P in the paper discharge direction Cd is slow, the kinetic energy of the discharged paper P is reduced. Is small, it is possible to appropriately absorb the kinetic energy of the discharged paper P by reducing the degree of bending (curving) of the piezoelectric sheet portion 37.

  Further, in the paper discharge accommodating device 30, regardless of the difference in kinetic energy of the discharged paper P, the kinetic energy is discharged in the paper discharge direction Cd in the paper discharge table 31 (discharge paper placement surface 31a). Since the sheet can be appropriately absorbed by the piezoelectric sheet portion 37 of the paper end fence 32, the paper P is stacked on the paper discharge table 31 (the paper discharge placement surface 31a) with the position in the paper discharge direction Cd more appropriately aligned. be able to.

  Further, in the paper discharge storage device 30, the use of the piezoelectric sheet portion 37 enables the adjustment of the reference receiving position, that is, the degree of bending (curving), so that the degree of bending (curving) can be easily adjusted. And a simple configuration.

  In the paper discharge storage device 30, since the degree of bending (curvature) (reference receiving position) can be adjusted by using the piezoelectric sheet portion 37, it is applied to the electric wires 37d and 37e connected to each electrode material. By adjusting the voltage (its magnitude and polarity), the degree of bending (curving) in the piezoelectric sheet portion 37 can be adjusted, and the more appropriate degree of bending (curving) (reference receiving position) with a simple configuration. Can be adjusted.

  In the paper discharge storage device 30, a reference receiving position is set according to a discharge state factor that changes the kinetic energy in the discharged paper P, and the degree of bending (curvature) in the piezoelectric sheet portion 37 is set to be the reference receiving position. Since the adjustment is performed, the sheets P can be stacked on the sheet discharge table 31 (the sheet discharge placement surface 31a) with the positions in the sheet discharge direction Cd more appropriately aligned regardless of the difference in the discharge state factor.

  In the paper discharge accommodating device 30, the paper type setting, that is, the type and size of the paper P to be discharged is taken into consideration as the discharge state factor. The paper P can be stacked on the paper discharge tray 31 (the paper discharge placement surface 31a) with the Cd positions more appropriately aligned.

  In the paper discharge accommodating device 30, the printing speed in the stencil printing device 10, that is, the speed at which the paper P advances in the paper discharge direction Cd is considered as the discharge state factor, so the printing speed (speed at which the paper P advances). Regardless of the change, the paper P can be stacked on the paper discharge tray 31 (paper discharge placement surface 31a) with the positions in the paper discharge direction Cd more appropriately aligned.

  In the paper discharge accommodating device 30, the ambient atmosphere, that is, the temperature and humidity of the environment in which the paper discharge accommodating device 30 (stencil printing device 10) is installed is considered as the discharge state factor. Regardless of changes in the temperature and humidity of the environment in which the apparatus 10) is installed, the sheets P are stacked on the sheet discharge table 31 (the sheet discharge mounting surface 31a) with the positions in the sheet discharge direction Cd more appropriately aligned. Can do.

  In the paper discharge storage device 30, since the reference receiving position is set by combining each discharge state factor (paper type setting, printing speed and surrounding atmosphere), the change in the type and size of the discharged paper P, and the printing speed thereof In addition, the degree of bending (curving) of the piezoelectric sheet portion 37 can be more appropriately adjusted under the control of the control unit 81, regardless of changes in temperature and humidity at the installed location.

  In the paper discharge accommodating device 30, the piezoelectric sheet portion 37 of the paper discharge end fence 32 can be adjusted to the degree of bending (curving) on the end side slide mechanism 34 (end side slider portion 34b). The degree of bending (curving) of the piezoelectric sheet portion 37 (reference receiving position) can be adjusted regardless of the position of the paper discharge end fence 32 in the discharging direction Cd, and the degree of bending (curving) of the piezoelectric sheet portion 37. The position of the paper discharge end fence 32 in the paper discharge direction Cd can be adjusted while maintaining the state where the (reference receiving position) is adjusted. For this reason, the paper discharge accommodating device 30 can appropriately absorb the kinetic energy regardless of the size difference of the discharged paper P, and the paper on the paper discharge tray 31 (paper discharge placement surface 31a). The positions of the sheets P in the discharge direction Cd can be properly aligned.

  In the paper discharge storage device 30, the upper end portion 37a is bent toward the upstream side in the paper discharge direction Cd (inside the paper discharge direction Cd), and the degree of bending (curvature) (reference receiving position) is discharged. Since the sheet P is received by the end side discharge guide surface 37b of the piezoelectric sheet portion 37 adjusted according to the sheet P, the generation of collision noise and vibration noise caused by the sheet P hitting is greatly suppressed. can do.

  In the paper discharge storage device 30, the type and size of the paper P to be discharged, the printing speed, and the paper discharge storage device 30 (stencil printing device) are adjusted by adjusting the degree of bending (curvature) (reference receiving position) of the piezoelectric sheet portion 37. 10) can absorb the kinetic energy of the discharged paper P appropriately regardless of changes in the temperature and humidity of the environment in which it is installed. For example, a piezoelectric sheet as an absorbent for absorbing kinetic energy Compared with the use of a sponge member instead of the portion 37, the extent to which the paper P hits the end-side paper discharge guide surface 37b and rebounds can be reduced. For this reason, in the paper discharge accommodation device 30, the position of each paper P in the paper discharge direction Cd on the paper discharge tray 31 (paper discharge placement surface 31a) can be properly aligned.

  In the paper discharge storage device 30, since the end side paper discharge guide surface 37 b on which the paper P hits is defined by the piezoelectric sheet portion 37 in the paper discharge end fence 32, the piezoelectric sheet is used as an absorbing material for absorbing kinetic energy. Compared to the use of a sponge member instead of the portion 37, the coefficient of friction generated between the sheet P and the sheet P can be reduced. Therefore, in the paper discharge storage device 30, the paper P that has been discharged and hits the end-side paper discharge guide surface 37b of the piezoelectric sheet portion 37 of the paper discharge end fence 32 is more reliably applied to the end-side paper discharge guide surface 37b. The sheet P can be slid down onto the sheet discharge placement surface 31a of the sheet discharge table 31, and the position of each sheet P in the sheet discharge direction Cd on the sheet discharge table 31 (discharge sheet placement surface 31a) can be appropriately set. Can be aligned.

  In the paper discharge accommodating device 30, in addition to the paper discharge end fence 32 capable of obtaining the above-described effects, the paper discharge container 30 can move in the discharge orthogonal direction Rd on the paper discharge table 31 (the paper discharge placement surface 31a). Since both the paper discharge side fences 33 are provided, the paper P discharged in the paper discharge direction Cd can be appropriately aligned and stacked and stored.

  In the stencil printing apparatus 10, the paper P on which the printed image is formed by the printing unit 13 as the image forming mechanism is discharged from the paper discharge unit 15 (its transport unit 15b) as the paper discharge mechanism in the paper discharge direction Cd. Since the paper storage unit 30 (the paper discharge tray 31) provided corresponding to the paper discharge direction Cd is stacked and stored, each paper P on which a print image is formed is appropriately stacked and stored. Can do.

  Therefore, in the paper discharge storage device 30 according to the first embodiment of the present invention, the position of each paper P in the paper discharge direction Cd on the paper discharge tray 31 can be appropriately aligned.

  In the first embodiment described above, the piezoelectric sheet portion 37 is provided in the end-side slider portion 34b of the end-side slide mechanism 34 at a distance from the presser plate portion 36 as viewed in the paper discharge direction Cd. As long as the above-described degree of bending (curvature) (reference receiving position) can be adjusted, it may be provided in contact with the presser plate 36 and is not limited to the above-described first embodiment. .

  Next, a paper discharge storage device 302 and a stencil printing apparatus 10 (see FIG. 1) including the same according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 7 is an explanatory view similar to FIG. 3 for explaining the configuration of the paper discharge end fence 322 in the paper discharge storage device 302.

  In the second embodiment, the configuration of the paper discharge end fence 322 in the paper discharge storage device 302 is different from the configuration of the paper discharge end fence 32 of the paper discharge storage device 30 in the first embodiment. The basic structure of the paper discharge storage device 302 (the paper discharge end fence 322) of the second embodiment is the same as that of the paper discharge storage device 30 (the paper discharge end fence 32) of the first embodiment described above. The same reference numerals are assigned to parts having the same configuration, and detailed description thereof is omitted. The configuration of the stencil printing apparatus 10 including the paper discharge accommodating device 302 is the same as that of the stencil printing apparatus 10 of the first embodiment described above (see FIG. 1) except that the paper discharge accommodating device 30 is changed to the paper discharge accommodating device 302. ), The detailed description and illustration thereof are omitted.

  In the paper discharge storage device 302 according to the second exemplary embodiment, the piezoelectric sheet portion 37 of the paper discharge end fence 322 is provided with a damping member that suppresses the vibration. In the second embodiment, a sponge member 41 is provided as a vibration damping member. In the second embodiment, the sponge member 41 is made of a sponge-like synthetic resin material, and has a thin plate shape that can be fitted along the entire piezoelectric sheet portion 37. As the synthetic resin material, for example, a foamable resin material such as foamed chloroprene rubber or polyurethane foam can be used. The sponge member 41 is attached to the back surface 37 c of the piezoelectric sheet portion 37 that faces the inner surface 36 a of the pressing plate portion 36. The sponge member 41 is attached to the back surface 37c so as not to hinder the adjustment of the degree of bending (curving) (reference receiving position) in the piezoelectric sheet portion 37. In the second embodiment, the sponge member 41 is attached to the back surface 37c by adhesion, and prevents the adjustment of the degree of bending (curvature) (the reference receiving position) in the piezoelectric sheet portion 37 by expanding and contracting itself. Has been.

  The paper discharge accommodating device 302 (stencil printing apparatus 10) according to the second embodiment of the present invention is basically the same in configuration as the paper discharge accommodating apparatus 30 (stencil printing apparatus 10), and therefore the same effect is obtained. Can do.

  In addition, in the paper discharge storage device 302 of the second embodiment, the sponge member 41 (damping member) is attached to the piezoelectric sheet portion 37 (the back surface 37c thereof), so that the paper is discharged from the end side paper discharge guide surface 37b. The vibration that can occur in the piezoelectric sheet portion 37 due to receiving the sheet P can be suppressed. For this reason, in the paper discharge storage device 302, it is possible to more effectively suppress the occurrence of collision noise and vibration noise caused by the paper P hitting.

  Further, in the paper discharge storage device 302, since the sponge member 41 is attached to the piezoelectric sheet portion 37 (the back surface 37c) as a damping member, the rigidity of the piezoelectric sheet portion 37 can be improved, and the paper P hits. As a result, the deformation speed when the piezoelectric sheet portion 37 (including the sponge member 41) bends can be reduced (the response of the piezoelectric sheet portion 37 when the sheet P hits) can be rebounded. The force can be reduced, and the position of each sheet P in the sheet discharge direction Cd on the sheet discharge table 31 (discharge sheet placement surface 31a) can be more appropriately aligned.

  Therefore, in the paper discharge storage device 302 according to the second embodiment of the present invention, the position of each paper P in the paper discharge direction Cd on the paper discharge tray 31 can be properly aligned.

  In the second embodiment described above, the piezoelectric sheet portion 37 (including the sponge member 41) is spaced from the presser plate portion 36 in the end-side slider portion 34b of the end-side slide mechanism 34 as viewed in the paper discharge direction Cd. However, if it is possible to adjust the degree of bending (curvature) (reference receiving position) described above, it is provided in contact with the presser plate portion 36 via the sponge member 41 (vibration control member). However, the present invention is not limited to the second embodiment described above.

  In the second embodiment, the sponge member 41 (vibration damping member) is attached to the back surface 37c of the piezoelectric sheet portion 37 by adhesion. However, the degree of bending (curving) in the piezoelectric sheet portion 37 (reference receiving position) If it can be attached to the back surface 37c and can obtain the above-described effects without hindering the adjustment of the), for example, it is related to the adjustment of the degree of bending (curving) (reference receiving position) in the piezoelectric sheet portion 37. It may be pressed against the back surface 37c so as to be in contact with each other, or may have another configuration, and is not limited to the above-described second embodiment.

  Further, in the above-described second embodiment, the sponge member 41 as the vibration damping member is formed in a thin plate shape that allows the sponge member 41 to be along the entire piezoelectric sheet portion 37 (the back surface 37c). For example, the piezoelectric sheet portion 37 may extend along the entire vertical direction Ud at the center position viewed in the discharge orthogonal direction Rd, or may have other configurations. Well, it is not limited to the second embodiment described above.

  In the above-described second embodiment, the sponge member 41 is used as the vibration damping member. However, other members may be used as long as the above-described effects can be obtained, and are limited to the above-described second embodiment. Is not to be done.

[Other Example A]
Next, a paper discharge accommodating device 303 according to another embodiment A and a stencil printing apparatus 10 (see FIG. 1) including the same will be described with reference to FIG. FIG. 8 is an explanatory view similar to FIG. 3 for explaining the configuration of the paper discharge end fence 323 in the paper discharge storage device 303.

  The other embodiment A is an example in which the configuration of the paper discharge end fence 323 in the paper discharge storage device 303 is different from the configuration of the paper discharge end fence 32 of the paper discharge storage device 30 of the first embodiment. The other configuration of the paper discharge container 303 (the paper discharge end fence 323) of the embodiment A is the same as that of the paper discharge storage device 30 (the paper discharge end fence 32) of the first embodiment described above. For this reason, parts having the same configuration are denoted by the same reference numerals, and detailed description thereof is omitted. The stencil printing apparatus 10 including the paper discharge accommodating device 303 is the same as the stencil printing apparatus 10 of the first embodiment described above (see FIG. 1) except that the paper discharge accommodating device 30 is changed to the paper discharge accommodating device 303. ), The detailed description and illustration thereof are omitted.

  In the paper discharge container 303 of another embodiment A, a paper discharge end fence 323 configured by attaching a weight 43 to the thin plate elastic member 42 is used. The thin plate elastic member 42 is formed of an elastically deformable material and has a thin plate shape as a whole. The thin plate elastic member 42 is provided upright from the inside of the end side slider portion 34b of the end side slide mechanism 34. The thin plate elastic member 42 is provided such that the upper end side is bent inward in the paper discharge direction Cd (upstream side in the paper discharge direction Cd), and the upper end of the thin plate elastic member 42 is on the paper discharge table 31 (the paper discharge placement surface 31a). The sheet P is positioned in the discharge range where the paper P is discharged. In the other embodiment A, the thin plate elastic member 42 is formed of Mylar (registered trademark) made of a polyester film material. The thin plate elastic member 42 forms an end-side discharge guide surface 42 a serving as a discharge guide surface in the discharge end fence 323 on the inner surface in the sheet discharge direction Cd. In the thin plate elastic member 42, a weight 43 is attached to a back surface 42b opposite to the end-side paper discharge guide surface 42a.

  The weight 43 enables the inertia weight of the thin plate elastic member 42, that is, the discharge end fence 323, to be changed. In another embodiment A, the weight 43 is formed of a material having a density higher than that of the thin plate elastic member 42. . The weight 43 can be attached to and detached from the thin plate elastic member 42 (the back surface 42b). In another embodiment A, the weight 43 is attached to the thin plate elastic member 42 (the back surface 42b) by a magnet (magnet) so as to be detachable from the thin plate elastic member 42 (the back surface 42b). It has been.

  In the other sheet discharge accommodation device 303 (stencil printing apparatus 10) of Example A, the weight 43 is attached to the thin plate elastic member 42 to increase the inertia weight of the thin plate elastic member 42, that is, the discharge end fence 323. In addition, by removing the weight 43, the inertia weight in the thin plate elastic member 42, that is, the paper discharge end fence 323 can be reduced. Therefore, in the paper discharge storage device 303, the kinetic energy can be appropriately absorbed by attaching and detaching the weight 43 according to the magnitude of the kinetic energy of the discharged paper P. That is, for example, when the discharged paper P is thick paper, or when the printing speed in the stencil printing apparatus 10, that is, the speed at which the paper P proceeds in the paper discharge direction Cd is high, the kinetic energy of the discharged paper P is increased. Is large, it is possible to appropriately absorb the kinetic energy of the discharged paper P by attaching the weight 43 to the thin plate elastic member 42. Further, for example, when the discharged paper P is thin paper or the printing speed in the stencil printing apparatus 10, that is, the speed of progress of the paper P in the paper discharge direction Cd is slow, the kinetic energy of the discharged paper P is reduced. Is small, it is possible to appropriately absorb the kinetic energy of the discharged paper P by removing the weight 43 from the thin plate elastic member 42.

  Further, in the paper discharge storage device 303, by increasing the inertia weight of the thin plate elastic member 42, that is, the paper discharge end fence 323, the thin plate elastic member 42 (discharge end fence 323) is bent when the paper P hits. Since the deformation speed can be reduced (the response of the thin plate elastic member 42 when the paper P hits), the force to bounce the paper P can be reduced, and the paper discharge table 31 (the paper discharge placement surface). The position of each paper P in the paper discharge direction Cd on 31a) can be more appropriately aligned.

  Further, in the paper discharge storage device 303, regardless of the kinetic energy of the discharged paper P, the kinetic energy is discharged in the paper discharge direction Cd in the paper discharge table 31 (discharge paper placement surface 31a). Since the thin plate elastic member 42 as the paper end fence 323 can appropriately absorb, the paper P is stacked on the paper discharge table 31 (discharge placement surface 31a) with the position in the paper discharge direction Cd more appropriately aligned. can do.

  In the paper discharge storage device 303, the inertia weight of the thin plate elastic member 42, that is, the discharge end fence 323 can be changed by attaching / detaching the weight 43 to / from the thin plate elastic member 42. Therefore, the inertia weight can be easily changed. And a simple configuration.

  The paper discharge storage device 303 can appropriately absorb the kinetic energy regardless of the magnitude of the kinetic energy of the discharged paper P. Therefore, the type and size change of the discharged paper P, its printing speed, and Corresponding to changes in temperature and humidity at the installed location, the paper P can be stacked on the paper discharge tray 31 (paper discharge placement surface 31a) with the positions in the paper discharge direction Cd more appropriately aligned.

  In the paper discharge storage device 303, the thin plate elastic member 42 as the paper discharge end fence 323 can change the inertia weight on the end side slide mechanism 34 (the end side slider portion 34b). It is possible to change the inertia weight regardless of the position of the paper discharge end fence 323 and adjust the position of the paper discharge end fence 323 in the paper discharge direction Cd while maintaining the changed inertia weight. it can. For this reason, the paper discharge storage device 303 can appropriately absorb the kinetic energy regardless of the size difference of the discharged paper P, and the paper on the paper discharge tray 31 (discharge placement surface 31a). The positions of the sheets P in the discharge direction Cd can be properly aligned.

  In the paper discharge storage device 303, since the paper discharge end fence 323 is configured by the thin plate elastic member 42 that can change the inertia weight by attaching and detaching the weight 43, the type and size of the paper P to be discharged is determined. Corresponding to the change, the printing speed, and the change in temperature and humidity at the installed location, it is possible to greatly suppress the occurrence of collision sound and vibration sound caused by the paper P hitting.

  In the paper discharge storage device 303, the weight of the thin plate elastic member 42 (paper discharge end fence 323) is changed by attaching and detaching the weight 43, thereby changing the type and size of the discharged paper P, its printing speed, In addition, since the kinetic energy of the paper P is appropriately absorbed in response to changes in temperature and humidity at the installed location, for example, the thin plate elastic member 42 is used as an absorbent for absorbing kinetic energy. Compared with the use of a sponge member, the extent to which the paper P hits the end-side paper discharge guide surface 42a and bounces can be reduced. For this reason, in the paper discharge storage device 303, the position of each paper P in the paper discharge direction Cd on the paper discharge tray 31 (paper discharge placement surface 31a) can be properly aligned.

  In the paper discharge storage device 303, the end side paper discharge guide surface 42 a on which the paper P hits is defined by the thin plate elastic member 42 formed of Mylar (registered trademark) made of a polyester film material in the paper discharge end fence 323. Therefore, compared with using a sponge member instead of the thin plate elastic member 42 as an absorbing material for absorbing kinetic energy, the friction coefficient generated between the sheet P and the sheet P can be reduced. For this reason, in the paper discharge storage device 303, the paper P that has been discharged and hits the end-side discharge guide surface 42a of the thin elastic member 42 of the discharge end fence 323 more reliably hits the end-side discharge guide surface 42a. The sheet P can be slid down onto the sheet discharge placement surface 31a of the sheet discharge table 31, and the position of each sheet P in the sheet discharge direction Cd on the sheet discharge table 31 (discharge sheet placement surface 31a) can be appropriately set. Can be aligned.

  In the paper discharge storage device 303, in addition to the paper discharge end fence 323 capable of obtaining each of the effects described above, it is possible to move in the discharge orthogonal direction Rd on the paper discharge table 31 (its paper discharge placement surface 31a). Since both the paper discharge side fences 33 are provided, the paper P discharged in the paper discharge direction Cd can be appropriately aligned and stacked and stored.

  In the stencil printing apparatus 10, the paper P on which the printed image is formed by the printing unit 13 as the image forming mechanism is discharged from the paper discharge unit 15 (its transport unit 15b) as the paper discharge mechanism in the paper discharge direction Cd. Since the paper storage unit 303 (the paper discharge tray 31) provided corresponding to the paper discharge direction Cd is stacked and stored, each paper P on which a print image is formed is appropriately stacked and stored. Can do.

  Therefore, in the paper discharge storage device 303 of another embodiment A according to the present invention, the position of each paper P in the paper discharge direction Cd on the paper discharge tray 31 can be properly aligned.

  In the other embodiment A described above, the weight 43 is detachably attached to the upper portion of the thin plate elastic member 42 (the back surface 42b). However, the present invention is not limited to the other example A described above.

  In the other embodiment A described above, the sheet discharge end fence 323 is configured by the thin plate elastic member 42 to which the weight 43 is detachably attached. The structure provided together may be sufficient, and the structure equivalent to the support member 44 of other Example B mentioned later may be provided, and it is not limited to above-mentioned other Example A. .

  Furthermore, in the other embodiment A described above, the thin plate elastic member 42 is provided. However, if the weight P can be flexed by hitting the paper P while being able to change the inertia weight by appropriately attaching the weight 43, The sponge member 45 of the other Example B which will be described later may be provided, may have another configuration, and is not limited to the other Example A described above.

  In the other embodiment A described above, the weight 43 is attached to the thin plate elastic member 42 by a magnet. However, if the weight 43 is detachably attached, the thin plate elastic member 42 will be described later. What corresponds to the pocket part 45d of the other Example B may be provided, may have another configuration, and is not limited to the other Example A described above.

[Other Example B]
Next, a paper discharge accommodating device 304 and a stencil printing apparatus 10 (see FIG. 1) including the same according to another embodiment B will be described with reference to FIGS. 9 and 10. FIG. 9 is an explanatory view similar to FIG. 3 for explaining the configuration of the paper discharge end fence 324 in the paper discharge storage device 304. FIG. 10 is an explanatory view showing the configuration of the paper discharge end fence 324 in a schematic perspective view.

  The other embodiment B is an example in which the configuration of the paper discharge end fence 324 in the paper discharge storage device 304 is different from the configuration of the paper discharge end fence 323 of the paper discharge storage device 303 in another embodiment A. As in the case of the other embodiment A, the basic structure of the paper discharge storage device 304 (the paper discharge end fence 324) of the other embodiment B is basically the same as the paper discharge storage device 30 of the above-described first embodiment (its discharge end). Since it is the same as that of the paper end fence 32), the same reference numerals are given to portions having the same configuration, and detailed description thereof will be omitted. The configuration of the stencil printing apparatus 10 including the paper discharge accommodating device 304 is the same as that of the stencil printing apparatus 10 according to the first embodiment described above (see FIG. 1) except that the paper discharge accommodating device 30 is changed to the paper discharge accommodating device 304. ), The detailed description and illustration thereof are omitted.

  In the paper discharge storage device 304 of another embodiment B, the paper discharge end fence 324 includes a support member 44 and a sponge member 45 attached thereto. The support member 44 has a plate shape made of a synthetic resin, and is provided to stand upward from the end-side slider portion 34 b of the end-side slide mechanism 34. As the synthetic resin, for example, acrylonitrile butadiene styrene (ABS), polystyrene (PS), polycarbonate (PC) or the like can be used, and the weight of the support member 44 can be reduced by using these. The support member 44 is shifted from the main body 44a to the inside of the paper discharge direction Cd (upstream of the paper discharge direction Cd) at the upper end of the main body 44a extending from the end side slider 34b. Is provided. When viewed in the discharge orthogonal direction Rd (when viewed from the front in FIG. 9), the tip holding portion 44b has a U-shape that opens downward, and can receive an upper end portion 45a, which will be described later, of the sponge member 45. ing. In the front end holding portion 44b, the downstream inner surface 44c outside the paper discharge direction Cd, that is, the downstream side in the paper discharge direction Cd can be in contact with a back surface 45c described later on the received upper end portion 45a. In the front end holding portion 44b, the upstream inner surface 44d inside the paper discharge direction Cd, that is, the upstream side in the paper discharge direction Cd can come into contact with an end-side discharge guide surface 45b (described later) at the received upper end portion 45a. ing. A sponge member 45 is fixed to the lower end portion of the support member 44 (its main body portion 44a).

  In another embodiment B, the sponge member 45 has a plate shape made of a sponge-like synthetic resin material, and rises upward from the end-side slider portion 34b of the end-side slide mechanism 34 so that the end-side slider It is provided in the part 34b. As the synthetic resin material, for example, a foamable resin material such as foamed chloroprene rubber or polyurethane foam can be used. The sponge member 45 has an upper end portion 45a inserted into the tip holding portion 44b of the support member 44, and the paper is formed so that the interval between the sponge member 45 and the support member 44 (its main body portion 44a) increases as it goes upward in the vertical direction Ud. It is bent inward in the discharge direction Cd. The sponge member 45 forms an end-side discharge guide surface 45 b that is a discharge guide surface in the discharge end fence 324 on the inner surface in the sheet discharge direction Cd. In this sponge member 45, the back surface 45c opposite to the end-side paper discharge guide surface 45b at the upper end portion 45a abuts on the downstream inner surface 44c of the inserted tip holding portion 44b. The main body 44a is spaced a predetermined distance. Further, in the sponge member 45, even when the paper P stacked on the paper discharge tray 31 (the paper discharge placement surface 31a) is pushed outward in the paper discharge direction Cd, the end-side paper discharge at the upper end 45a. When the guide surface 45b abuts on the upstream inner surface 44d of the inserted tip holding portion 44b, it is possible to prevent a predetermined interval between the back surface 45c and the main body portion 44a of the support member 44 from being reduced. Therefore, when the discharged paper P is received by the end-side paper discharge guide surface 45b, the sponge member 45 can absorb the kinetic energy of the paper P by bending using the above-described predetermined interval. it can.

  In the sponge member 45, three pocket portions 45d are provided in series from the upper end portion 45a side in the standing direction (the direction in which the sponge member 45 extends as viewed in FIG. 9). Each pocket portion 45d can accommodate a weight 46. The weight 46 enables the inertia weight of the sponge member 45 to be changed. In another embodiment B, the weight 46 is formed of a material having a density higher than that of the sponge member 45. In another embodiment B, three weights 46 are prepared in accordance with the number of pocket portions 45d in the sponge member 45. For this reason, in the sponge member 45, the weight 46 can be attached by appropriately storing the weight 46 in each pocket portion 45d.

  In the paper discharge end fence 324, the weight 46 is appropriately stored in each pocket portion 45d of the sponge member 45, thereby changing the attachment state of each weight 46 to the sponge member 45 and changing the inertia weight of the sponge member 45. can do. More specifically, in the sponge member 45 (the paper discharge end fence 324), when the single weight 46 is used, the deformation speed at the time of bending due to the contact with the paper P decreases as it is stored in the upper pocket portion 45d ( The response of the sponge member 45 when the paper P hits can be blunted). Further, in the sponge member 45 (the paper discharge end fence 324), as the number of weights 46 to be attached is increased, the deformation speed at the time of bending due to the paper P hitting can be reduced. For this reason, the discharge end fence 324 changes whether or not the weight 46 is stored in each pocket portion 45d of the sponge member 45 and changes the attachment state of each weight 46 to the sponge member 45, thereby discharging the weight 46. The inertia weight of the sponge member 45 that receives the paper P to be printed can be changed more finely.

  The paper discharge accommodating device 304 (stencil printing apparatus 10) of another embodiment B according to the present invention is basically the same configuration as the paper discharge accommodating device 303 (stencil printing apparatus 10) of another embodiment A. Therefore, the same effect can be obtained.

  In addition, in the paper discharge storage device 304 of another embodiment B, the inertia weight of the sponge member 45 is changed depending on whether or not a plurality of (three in other embodiment B) weights 46 are attached. The kinetic energy of the paper P can be appropriately absorbed in response to the change in the kinetic energy of the discharged paper P (change in the discharge state factor).

  Further, in the paper discharge storage device 304 of another embodiment B, each weight 46 is stored by storing the weights 46 in a plurality of pocket portions 45d (three in other embodiment B) provided in the sponge member 45. Therefore, the inertia weight can be easily changed, and a simple configuration can be obtained.

  Furthermore, in the paper discharge storage device 304 of another embodiment B, the sponge member 45 whose lower end is fixed to the lower end portion of the support member 44 (its main body portion 44a) is 3 from the upper end portion 45a side along the rising direction. Since the two pocket portions 45d are provided in series, the inertia weight of the sponge member 45 can be changed by changing the place where the weight 46 is stored.

  In the paper discharge storage device 304 of another embodiment B, the type of paper P to be discharged is changed by changing the position and number of the weights 46 stored in a plurality (three in the other embodiment B) of the pocket portions 45d. It is possible to appropriately cope with changes in size, printing speed, that is, speed that advances in the paper discharge direction Cd, and temperature and humidity of the environment in which the paper discharge storage device 304 (stencil printing device 10) is installed. For this reason, in the paper discharge storage device 304, it is possible to more effectively suppress the occurrence of collision noise and vibration noise caused by the paper P hitting.

  Therefore, in the paper discharge storage device 304 of another embodiment B according to the present invention, the position of each paper P in the paper discharge direction Cd on the paper discharge tray 31 can be appropriately aligned.

  In the above-described other embodiment B, the three pocket portions 45d are provided in series in the direction standing on the sponge member 45, but the weight 46 can be accommodated and taken out. For example, the arrangement position, the arrangement direction, and the number of the pocket portions 45d may be set as appropriate, and are not limited to the other examples B described above.

  Further, in the other embodiment B described above, the three pocket portions 45d are provided in the sponge member 45. However, other embodiments may be used as long as the weight 46 can be detachably attached to the sponge member 45. It may be attached by a magnet (magnet) as in Example A, may have other configurations, and is not limited to the other Example B described above.

  Further, in the other example B described above, the sponge member 45 is provided. However, if the weight 46 can be appropriately changed and the inertia weight can be changed while the sheet P hits, the other can be used. The thin-plate elastic member 42 of Example A may be provided, and other configurations may be used, and the present invention is not limited to the other Example B described above.

[Other Example C]
Next, a paper discharge accommodating device 305 and a stencil printing apparatus 10 (see FIG. 1) including the same according to another embodiment C will be described with reference to FIG. FIG. 11 is an explanatory view similar to FIG. 3 for explaining the configuration of the paper discharge end fence 325 in the paper discharge storage device 305.

  The other embodiment C is an example in which the configuration of the paper discharge end fence 325 in the paper discharge storage device 305 is different from the configuration of the paper discharge end fence 324 of the paper discharge storage device 304 in another embodiment B. As in the case of the other example B, the basic structure of the other sheet discharge storage device 305 (the discharge end fence 325) of the embodiment C is basically the same as that of the sheet discharge storage device 30 (the discharge end thereof) of the first embodiment. Since it is the same as that of the paper end fence 32), the same reference numerals are given to portions having the same configuration, and detailed description thereof will be omitted. The configuration of the stencil printing apparatus 10 including the paper discharge accommodating device 305 is the same as that of the stencil printing apparatus 10 of the first embodiment described above (see FIG. 1) except that the paper discharge accommodating device 30 is changed to the paper discharge accommodating device 305. ), The detailed description and illustration thereof are omitted.

  In the paper discharge storage device 305 according to another embodiment C, the paper discharge end fence 325 includes a support member 44, a sponge member 47 attached to the support member 44, and a drive mechanism 48 provided on the sponge member 47. doing. The sponge member 47 is fixed to the lower end portion of the support member 44 (its main body portion 44a). The support member 44 is a support member of another embodiment B except that a receiving convex portion 44e for avoiding interference with the drive mechanism portion 48 provided on the sponge member 47 is provided as will be described later. 44. The sponge member 47 is basically the same as the sponge member 45 of the other embodiment B. In this sponge member 47, the upper end portion 47a is inserted into the tip holding portion 44b of the support member 44 so that the end-side discharge guide surface 47b faces the upstream side in the sheet discharge direction Cd and the back surface 47c faces the support member 44 (its main body). Part 44a). The sponge member 47 is different from the sponge member 45 in that the inertia weight is automatically (mechanically) changed.

  For this reason, the sponge member 47 is provided with a single storage hole 47d in place of the three pockets 45d. The storage hole 47d is provided so as to extend from below to above the sponge member 47 along the direction in which the sponge member 47 stands (the direction in which the sponge member 47 extends as viewed in FIG. 11). The storage hole 47d can store the weight 49. The weight 49 allows the inertia weight of the sponge member 47 to be changed, and is formed of a material having a density higher than that of the sponge member 47 and is a long member. In another embodiment C, the weight 49 can be stored in the storage hole 47d and can move along the axial direction in the storage hole 47d. The weight 49 is provided with gear teeth 49a at one end (left side in the example of FIG. 11). The gear teeth 49 a are provided along the longitudinal direction of the weight 49. A drive mechanism 48 is provided to move the weight 49 within the storage hole 47d.

  The drive mechanism 48 is connected to the same controller 81 as in the first embodiment, and the controller 81 is connected to the operation unit 82 as in the first embodiment. In another embodiment C, the drive mechanism 48 has a drive motor 48a and an output gear 48b. The drive motor 48 a outputs driving force by rotating the output shaft, and is fixed to the sponge member 47. In the drive motor 48a, the rotational position of the output shaft can be regulated under the control of the control unit 81. In the drive motor 48a, an output gear 48b is provided on the output shaft. The output gear 48b meshes with gear teeth 49a of a weight 49 housed in the housing hole 47d. For this reason, in the drive mechanism 48, when the drive motor 48a is driven, the output gear 48b of the output shaft is rotationally driven. In the drive mechanism 48, the rotation of the output gear 48b is reversed as the drive of the drive motor 48a is reversed (the rotation direction of the output shaft is reversed). In the drive mechanism 48, the rotation direction and the rotation position of the output gear 48b are defined by the control unit 81 controlling the rotation direction and the rotation position of the drive motor 48a (its output shaft). The output gear 48 b serves as a location for outputting a driving force to the weight 49 in the drive mechanism 48.

  In the paper discharge storage device 305, the position where the output gear 48b is engaged with the gear tooth 49a of the weight 49 can be changed by the driving force from the driving mechanism 48 (the driving motor 48a). Then, the position of the weight 49 in the extending direction in the housing hole 47d changes according to the position of engagement of the output gear 48b with the gear tooth 49a. Thereby, in the paper discharge storage device 305, the weight 49 stored in the storage hole 47d can be appropriately moved in the sponge member 47 of the paper discharge end fence 325. In the sponge member 47 (the paper discharge end fence 325), the deformation speed at the time of bending due to the paper P hits as the weight 49 is moved upward in the storage hole 47d by the driving force from the driving mechanism 48. (The response of the sponge member 47 when the paper P hits can be dulled). Therefore, in the sponge member 47 (the paper discharge end fence 325), the inertia weight of the sponge member 47 that receives the discharged paper P is changed more finely by changing the position of the weight 49 in the storage hole 47d. be able to. In the paper discharge storage device 305, the control unit 81 can perform the driving process of the drive mechanism unit 48 (drive motor 48 a) based on the operation performed on the operation unit 82. The inertia weight of the sponge member 47 (the paper discharge end fence 325) as described above can be adjusted.

  Here, the inertia weight in the sponge member 47 (the paper discharge end fence 325) is set according to the above-described discharge state factor, whereby the paper discharge direction of the paper P in the paper discharge table 31 (the paper discharge placement surface 31a). It is possible to properly align the positions at Cd. As described above, this is because the kinetic energy in the discharged paper P changes according to the discharge state factor. Specifically, in the sponge member 47, based on the paper type setting of the discharge state factors, that is, the standard size and standard thickness of the paper used in the stencil printing apparatus 10, the standard thickness, the image area ratio, and the like, It is possible to grasp in advance the inertia weight applicable to each type and size of paper. Therefore, in the paper discharge storage device 305, inertia weights are set in advance according to the paper type setting (for each paper type and size), and the positions of the weights 49 for the respective inertia weights are registered in the storage unit 81a. Thus, the inertia weight of the sponge member 47 can be adjusted under the control of the control unit 81 in accordance with the type and size of the selected paper.

  In addition, the sponge member 47 can grasp in advance the inertia weight adapted to each speed based on the printing speed of the stencil printing apparatus 10 among the discharge state factors, that is, the speed that advances in the paper discharge direction Cd. For this reason, in the paper discharge storage device 305, the inertia weight is set in advance according to the print speed that can be set, and the position of the weight 49 serving as each inertia weight is registered in the storage unit 81a. The inertia weight of the sponge member 47 can be adjusted under the control of the control unit 81 according to the speed.

  Further, in the sponge member 47, the ambient atmosphere at the place where the paper discharge accommodating device 305 (stencil printing device 10) is installed among the discharge state factors, that is, the environment where the paper discharge accommodating device 305 (stencil printing device 10) is installed. Based on the temperature and humidity, the inertia weight adapted to each speed can be grasped in advance. For this reason, in the paper discharge storage device 305, a sensor for measuring the ambient temperature and / or humidity is provided, and an inertia weight is set in advance according to a change in temperature and / or humidity at the installed location, and each inertia weight is set. The position of the weight 49 is registered in the storage unit 81a. As a result, in the paper discharge storage device 305, the inertia weight of the sponge member 47 can be adjusted under the control of the control unit 81 in accordance with the measurement result from the sensor, that is, the ambient atmosphere in the installed place.

  In the paper discharge storage device 305 of another embodiment C, the inertia weight of the sponge member 47 is set by combining each discharge state factor (paper type setting, printing speed, and ambient atmosphere). For this reason, in the paper discharge storage device 305, the inertia weight of the sponge member 47 can be adjusted more appropriately under the control of the control unit 81.

  In addition, the control unit 81 can adjust the position of the weight 49, that is, the inertia weight of the sponge member 47 based on the operation performed on the operation unit 82. Therefore, by actually discharging the paper P, the sponge member The inertia weight of 47 can be adjusted more appropriately. Next, an operation detection sensor for detecting the operation (deflection) of the sponge member 47 is provided in the paper discharge storage device 305, and when the operation is not suitable (when the operation is excessive or too slow). The control unit 81 may adjust the inertia weight of the sponge member 47 according to the tendency (excessive or dull) of the operation. As a result, in the paper discharge storage device 305, the paper P discharged from the paper discharge unit 15 (its transport unit 15b) is more appropriately aligned in the paper discharge direction Cd, and the paper discharge table 31 (paper discharge placement). It can be loaded on the surface 31a).

  The weight 49 is prevented from rotating the output gear 48b meshing with the gear teeth 49a, that is, the drive motor 48a, so that the position in the adjusted accommodation hole 47d is maintained. Prevention of the rotation of the output gear 48b or the drive motor 48a can be realized by a force that resists rotation of the output shaft by an external force from a state where the output gear 48b or the drive motor 48a is not driven. In such a configuration, when it is difficult to sufficiently prevent the rotation of the output gear 48b or the drive motor 48a, a brake mechanism or a weight for stopping the rotation of either the output gear 48b or the drive motor 48a A brake mechanism for stopping the movement of 49 may be provided. In the brake mechanism, transition between a state in which the rotation is stopped and a state in which the rotation is released is performed under the control of the control unit 81. As a result, the weight 49 is securely fixed at the adjusted position in the storage hole 47d.

  The paper discharge container 305 (stencil printing apparatus 10) of another embodiment C according to the present invention is basically the same in configuration as the paper discharge storage apparatus 304 (stencil printing apparatus 10) of another embodiment B. Therefore, the same effect can be obtained.

  In addition, in the paper discharge storage device 305 of the other embodiment C, the inertia weight in the sponge member 47 (discharge end fence 325) is changed by changing the position of the weight 49 in the storage hole 47d of the sponge member 47. Therefore, the kinetic energy of the paper P can be appropriately absorbed in response to the change in the kinetic energy of the discharged paper P.

  Further, in the paper discharge storage device 305 of the other embodiment C, the sponge member 47 (the paper discharge end fence 325) is changed by changing the position of the weight 49 by the driving force from the drive mechanism 48 in the sponge member 47. Since the inertia weight is adjusted, the inertia weight can be easily changed.

  Further, in the paper discharge storage device 305 of the other embodiment C, the type and size of the discharged paper P, the printing speed, that is, the paper discharge, is changed by changing the position of the weight 49 in the storage hole 47d of the sponge member 47. It is possible to appropriately cope with the speed of traveling in the direction Cd and changes in the temperature, humidity, and the like of the environment in which the paper discharge storage device 305 (stencil printing device 10) is installed. For this reason, in the paper discharge storage device 305, it is possible to more effectively suppress the occurrence of collision noise and vibration noise caused by the paper P hitting.

  In the paper discharge storage device 305 according to another embodiment C, the drive mechanism 48 can be driven under the control of the control unit 81 based on the operation performed on the operation unit 82, so that the operation unit 82 is simply operated. Thus, the inertia weight in the sponge member 47 (the paper discharge end fence 325) can be adjusted.

  In the paper discharge storage device 305 of the other embodiment C, by changing the meshed position of the output gear 48b with respect to the gear teeth 49a of the weight 49 that is movable along the direction in which the storage hole 47d extends, Since the position of the weight 49 in the storage hole 47d is changed, the configuration for adjusting the inertia weight in the sponge member 47 (discharge end fence 325) can be simplified.

  In the paper discharge storage device 305 of the other embodiment C, by changing the meshed position of the output gear 48b with respect to the gear teeth 49a of the weight 49 that is movable along the direction in which the storage hole 47d extends, Since the position of the weight 49 in the storage hole 47d is changed, the position of the weight 49 in the storage hole 47d can be continuously changed, so that the sponge member 47 (discharge end fence 325) The inertia weight in can be adjusted more finely.

  Therefore, in the paper discharge container 305 according to another embodiment C of the present invention, the position of each paper P in the paper discharge direction Cd on the paper discharge tray 31 can be properly aligned.

  In the other example C described above, the sponge member 47 is provided. However, if the weight P can be changed by appropriately moving the weight 49 while being able to change the inertia weight, The thin-plate elastic member 42 of another Example A may be provided, and another structure may be sufficient and it is not limited to the other Example C mentioned above.

  In the other embodiment C described above, the output gear 48 b provided on the output shaft of the drive motor 48 a of the drive mechanism 48 is configured to mesh with the gear teeth 49 a of the weight 49. It is only necessary that the position of the weight 49 in the sponge member 47 (its storage hole 47d) can be changed by the driving force output below, and is not limited to the configuration of the other embodiment C described above. Absent.

  In each of the above-described embodiments, the paper discharge storage devices 30 and 302 as an example of the paper discharge storage device according to the present invention have been described. However, the paper discharge placement surface on which the paper discharged in the paper discharge direction is stacked is described. A paper discharge tray to be formed, and a paper discharge end fence provided on the paper discharge tray to regulate a stacking position of the paper in the paper discharge direction on the paper discharge placement surface, the paper discharge end. The fence is erected from the paper discharge placement surface on the upstream side in the paper discharge direction in the vicinity of the presser plate portion and in the vicinity of the presser plate portion. However, it is sufficient if it is a paper discharge storage device having a piezoelectric sheet portion that is provided with its upper end portion positioned in the paper discharge range by being bent toward the upstream side, and the degree of bending changes with the supply of electric power. It is not limited to the above-described embodiments.

  In each of the above-described embodiments, the end-side slide mechanism 34 (the end-side slider portion 34b) is provided with the discharge end fences 32, 322 (including 323, 324, 325). In addition, a sheet support member 83 (see FIG. 11) may be provided below. The sheet support member 83 is lowered downward from the end discharge guide surface (37b, etc.) of the discharge end fence (32, etc.) toward the inside of the sheet discharge direction Cd (discharge placement on the discharge table 31). A sheet receiving surface 83a toward the surface 31a) is formed. The paper receiving surface 83a is continuous to the outside of the paper discharge direction Cd on the paper discharge mounting surface 31a of the paper discharge table 31 and is inclined upward toward the outer side, so that the paper is discharged onto the paper discharge table 31. A portion for stacking the paper P continuous with the placement surface 31a is formed. Similarly, a paper support member 84 corresponding to the paper support member 83 may be provided below each paper discharge side fence 33.

  Further, in each of the above-described embodiments, the stencil printing apparatus 10 is shown as an example of the image forming apparatus. However, the image forming mechanism that forms a print image on the paper P and the paper P on which the print image is formed are discharged in the paper discharge direction Cd. Stencil printing apparatus provided with a paper discharge mechanism for discharging the paper and a paper discharge storage device (30, 302) according to the present invention or a paper discharge storage device (303, 304, 305) according to another embodiment. The image forming apparatus may be an image forming apparatus having a function such as a printing apparatus other than 10, an ink jet recording apparatus, a printer, a plotter, a copying machine, or a facsimile machine, or a multifunction machine having a plurality of these functions. However, the present invention is not limited to each embodiment.

  In each of the above-described embodiments, the recording medium on which the print image is formed is shown as the paper P. In addition to the general paper, the paper P is, for example, special paper such as coated paper, OHP sheet, or the like. Is included. For this reason, the paper discharge direction can be paraphrased as the sheet discharge direction, the paper as the sheet, the discharge tray as the discharge sheet stacking base, the discharge storage device as the discharge sheet storage device, and the above terms in higher terms. .

  As described above, the paper discharge accommodating device of the present invention and the image forming apparatus including the same have been described based on each embodiment. However, the specific configuration is not limited to each embodiment and does not depart from the gist of the present invention. As long as the design is changed or added, it is allowed.

10 stencil printing apparatus (as an example of an image forming apparatus) 13 printing section (as an example of an image forming mechanism) 15 paper discharge section (as an example of a paper discharge mechanism) 30, 302 paper discharge accommodating apparatus 31 paper discharge table 31a Discharge placement surface 32 Discharge end fence 33 Discharge side fence 33a Side discharge guide surface 36 Presser plate portion 37 Piezoelectric sheet portion 41 Sponge member (as an example of a damping member) Cd Paper discharge direction P Paper Rd discharge Orthogonal direction

Japanese Patent No. 3373656

Claims (9)

A paper discharge tray that forms a paper discharge placement surface for stacking paper discharged in the paper discharge direction;
A paper discharge end fence provided on the paper discharge stand to regulate the stacking position of the paper in the paper discharge direction on the paper discharge mounting surface,
The paper discharge end fence includes a pressing plate portion erected from the paper discharge placement surface;
The upper end portion of the sheet discharge range is bent near the presser plate portion and upstream of the presser plate portion in the paper discharge direction while being bent from the paper discharge mounting surface while being raised. And a piezoelectric sheet portion that is provided at a position where the degree of bending changes when power is supplied. A reference receiving position is a position where the upper end of the discharged paper hits the reference sheet.
A plurality of the reference receiving positions are set according to a change in a discharge state factor that determines a discharge state of the paper,
2. The paper discharge container according to claim 1, wherein a degree of bending of the piezoelectric sheet portion is adjusted to be the reference receiving position set according to the discharge state factor.   The paper discharge container according to claim 2, wherein the discharge state factor is a paper type setting for the paper.   The paper discharge accommodation apparatus according to claim 2, wherein the discharge state factor is a speed at which the paper is discharged.   The paper discharge container according to claim 2, wherein the discharge state factor is a surrounding atmosphere at a place where the paper discharge container is installed.   6. The piezoelectric sheet portion according to claim 1, wherein a damping member that suppresses vibration in the piezoelectric sheet portion is provided on a back surface on the side of the pressing plate portion. The paper discharge container according to claim 1. The discharge storage device according to any one of claims 1 to 6,
And a discharge side fence that forms a pair in the discharge orthogonal direction perpendicular to the paper discharge direction and that forms a side discharge guide surface parallel to the paper discharge direction. A discharge delivery device.   8. The paper discharge receiving apparatus according to claim 1, wherein the paper discharge end fence is provided on the paper discharge table so as to be movable in the paper discharge direction. 9. 9. An image forming mechanism that forms a print image on a sheet, a sheet discharge mechanism that discharges the sheet on which the print image is formed in a sheet discharge direction, and a paper discharge storage according to claim 1. And an image forming apparatus.