JP4272498B2 - Discharge storage device and image forming apparatus - Google Patents

Description

  The present invention relates to a paper discharge storage device for stacking and storing paper such as an image-formed sheet, a transfer material, and a recording material to be discharged, and a printing machine, a copier, a printer, a facsimile, The present invention relates to an image forming apparatus such as a multifunction peripheral.

  As a paper discharge storage device, one having a configuration as shown in FIG. 12 is known. The paper discharge storage device shown in FIG. 12 includes a paper discharge tray 4 on which the paper 3 discharged by the paper transport unit 2 of the image forming apparatus 1 is stacked and stored, and an end fence 6 that restricts movement of the paper 3 in the discharge direction. And a pair of side fences 7A and 7B that extend substantially parallel to the discharge direction and face each other in a direction substantially orthogonal to the discharge direction. The rear end of the paper discharge table 4 is supported by the image forming apparatus 1 by a support shaft 5 and can be folded and stored by rotating to the image forming apparatus 1 side. The position of the end fence 6 can be adjusted in the paper discharge direction, and the positions of the side fences 7A and 7B can be adjusted in the direction (paper width direction) substantially perpendicular to the discharge direction by the rail 9 and the slider 10. Yes. The end fence 6 and the side fences 7A and 7B are provided so as to be foldable inward. The sheet discharge table 4 is attached to the image forming apparatus 1 in an inclined state with an inclination angle θ that normally lowers the front in order to align the leading edge of the sheet 3 with the end fence 6.

  Depending on the paper quality, size, printing pattern of the paper 3, especially the type of printing machine in stencil printing, the image surface is extended by ink, and as shown in FIG. 13, the phenomenon that the paper 3 becomes an upwardly convex arch shape occurs. . When the paper 3 falls on the paper discharge table 4 in such a form, the position is easily shifted due to air resistance, and the alignment is deteriorated. For this reason, a proposal has been made to improve the alignment by correcting the upward convex arch form of the paper 3 in the fall process.

  For example, Patent Document 1 describes a paper discharge storage device in which a plurality of swing members that protrude inward of a side fence are provided in a vertical direction on a pair of side fences. In this apparatus, the swinging member rotates by the weight of the paper so that the paper passes downward. The sheet discharged in an upward convex arch form is in a downwardly convex reverse arch form with the end in the width direction perpendicular to the discharge direction coming into contact with the swinging member. The paper that has passed through the swinging member tries to return to an upwardly convex arch form, but when it comes into contact with the lower swinging member, it again becomes a downwardly convex reverse arch form, resulting in a posture with low air resistance. Stacked on the paper tray. The swinging member is limited to rotate upward, and after the paper contacts and rotates downward, the swinging member rotates upward by weight balance and stops at a predetermined position.

  In Patent Document 2, a pair of side fences each have a contact surface that warps an end in the width direction of the paper upward, and swing members that swing by the weight of the paper and allow the paper to fall are perpendicular to each other. A plurality of swinging members are pivotally connected to the free end of an arm pivotably provided on the side fence, and swing when taking out the paper stacked on the paper discharge tray. There is described a paper discharge storage device in which the member moves upward and is displaced so as to retract from the inner surface of the side fence.

JP-A-6-329327 JP 2003-40515 A

In Patent Documents 1 and 2, each has a swinging member that warps the end in the width direction of the paper upward. However, when stacking paper with no stiffness such as thin paper, the swinging member protrudes to the inner surface of the side fence. Therefore, the sheet cannot be retracted from the guide position to the retracted position where it is retracted from the inner surface of the side fence. In other words, there is a difference in stiffness between thin paper, standard paper, and thick paper. When falling, the U shape cannot be maintained, and the paper discharge alignment is deteriorated. In addition, the paper discharged on the paper discharge tray warps downward before coming into contact with the swinging member, and even if it touches the swinging member, it becomes difficult to warp upward, and the paper discharge alignment deteriorates. There are also issues.
SUMMARY OF THE INVENTION An object of the present invention is to provide a paper discharge storage device and an image forming apparatus that can obtain an optimum paper stacking performance by arbitrarily changing the position of a swing member according to the type of paper to be discharged. .

According to a first aspect of the present invention, there is provided a sheet discharge table on which sheets to be discharged are sequentially stacked, and a pair facing each other in a direction substantially parallel to the discharge direction provided on the sheet discharge table and substantially orthogonal to the discharge direction. A side fence, a guide position protruding from the inner surface of each side fence, and a storage position retracting from the inner surface, which are rotatably connected to the free ends of the arms rotatably attached to the pair of side fences. and a swing member occupying, has a contact surface which deflect widthwise end portion of the sheet upward when the swing member accounted for guide position, the heavy plurality provided in the paper in the vertical direction of the side fences In the paper discharge storage device that allows the paper to fall, the retraction means that displaces the swinging member to the guide position and the storage position by an arbitrary operation, and the side fence that can be opened and closed above the swinging member. The Have a induction guide member for dropping deflect the end portion in the width direction of the sheet upward, saving means comprises a slidable operating unit for each side fences, movable integrally with the operating unit It is, is characterized in that chromatic a working member for moving the part engaged with respective guide members of each guide member upon sliding the operating unit to the storage position.

According to a second aspect of the present invention, in the paper discharge storage device according to the first aspect, the retracting means and the plurality of swinging members are unitized .

  According to a third aspect of the present invention, in the paper discharge storage device according to the first or second aspect, the swing members are provided in a plurality of rows in the discharge direction, and the swing members are alternately arranged in the vertical direction in each row. It is characterized in that the retracting means are installed independently for each.

  According to a fourth aspect of the present invention, in the paper discharge storage device according to the first, second, or third aspect, the swinging member moves upward while taking out the paper stacked on the paper discharge table, and the guide position It is characterized by being displaced from the storage position to the storage position.

The invention of claim 5, and transferring the image formed by the image forming means on the sheet, the image forming apparatus for stacking housing to discharge the sheet to the sheet discharge storage device, to discharge and storage apparatus claims 1 4 It is characterized by being described in any of the above.

  According to the present invention, by providing the retracting means for displacing the swing member between the guide position and the storage position by an arbitrary operation, the position of the swing member can be arbitrarily changed according to the type of paper. Therefore, it is possible to stabilize the state when the paper is dropped and to obtain the optimum loading performance according to the paper. When taking out the stacked paper, the swinging member can be displaced to the storage position by operating the retracting means, so that there is almost no resistance at the time of taking out and the paper take-out property can be improved.

  According to the present invention, the swing members are provided in a plurality of rows in the discharge direction, the swing members are alternately arranged in the vertical direction in each row, and the retracting means is installed in each row independently. Even if there is variation in the area and the strength of the paper is strong, the position of the swinging member can be adjusted by operating the retracting means corresponding to the strength position of the paper. Balance can be optimized, and better loading performance can be obtained.

  According to the present invention, the guide in the discharge direction and the guide in the drop direction can be provided above the swing member by providing the guide guide member for causing the edge in the width direction of the paper to bend upward and dropping, When printing solid images or printing in high-humidity environments, even when the ink is transferred to the paper and the paper curls in a reverse U-shape, it gives a firm U-shape to the paper. Can be maintained until falling, and better loading performance can be obtained.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. An outline of the configuration of the stencil printing apparatus 60 serving as the image forming apparatus in the present embodiment will be described based on FIG. The stencil printing apparatus 60 has a clamper 61 on the outer peripheral surface and a printing drum 62 as an image forming unit having an ink supply unit (not shown) inside, a plate discharging unit 63 for peeling a used master on the printing drum 62, A master is made based on image reading information from a document reading means (not shown), and a plate making / plate feeding means 64 for feeding the master made to the printing drum 62, a paper feeding means 65, and paper feeding by the paper feeding means 65. A press roller 66 serving as a printing pressure unit that presses the printed paper 3 against the printing drum 62, a paper discharge transport unit 67 that transports the printed paper 3, a paper discharge storage device 68, and the like. Other than the configuration of the paper discharge storage device 68 described in detail below, the configuration is well known. In the present embodiment, as the stencil printing apparatus 60, a so-called stencil-making type stencil printing apparatus having the plate discharging means 63 and the plate making / plate feeding means 64 is illustrated. It may be a printing device.

  The sheet feeding means 65 includes a sheet feeding stand 69 that can be moved up and down, a sheet feeding roller 70 and a separation roller 71 that separate and feed the sheets 3 stacked thereon one by one from the top, and a sheet feeding A pair of registration rollers that transport the paper 3 to the transfer portion at a timing when the leading edge of the image on the printing drum 62 and a predetermined position in the transport direction of the paper 3 coincide with each other after the paper 3 that has been stopped is temporarily stopped and the oblique shift is corrected. 72 etc. The front end of the master that has been made is clamped by the clamper 61, and the master that has been made is wound around the outer peripheral surface of the printing drum 62 by the clockwise rotation of the printing drum 62. In synchronization with the paper feed timing of the registration roller pair 72, the press roller 66 rises and presses the paper 3 against the printing drum 62. By this pressing operation, the ink supplied to the inner surface of the printing drum 62 by an ink supply means (not shown) oozes through the opening of the printing drum 62 and the perforated portion of the master and is transferred onto the paper 3. The sheet 3 to which the ink image has been transferred is separated from the printing drum 62 by a separation unit (not shown) and conveyed by a paper discharge conveyance unit 67. The paper discharge transport unit 67 has a fan that forms an air flow, and the paper 3 is sucked and transported. The sheets 3 conveyed by the sheet discharging and conveying means 67 are stored in a sheet discharging and storing device 68 and stacked sequentially.

  The paper discharge storage device 68 includes a paper discharge stand 74, an end fence 75, and a pair of side fences 76A and 76B. Although not shown, the position of the end fence 75 can be adjusted in the paper discharge direction, and the side fences 76A and 76B can be adjusted in the direction orthogonal to the paper discharge direction. These position adjusting mechanisms can adopt the same configuration as the conventional one.

  As shown in FIG. 1, on the rear end side in the discharge direction of the side fence 76A located on the right side in the discharge direction of the paper 3, a unit 34 in which a plurality of swing members 15 are integrally assembled is spaced apart in the discharge direction. Two are provided. Although not shown, the side fence 76B located on the left side in the paper discharge direction has the same configuration. On the upper part of each unit 34 of the side fences 76A and 76B, a guide guide member 90 is provided for causing the end of the sheet 3 in the width direction (the end parallel to the discharge direction) to bend upward. As shown in FIG. 2, the side fences 76A and 76B are formed with an opening 77 for projecting the swinging member 15 inward (to the side fence on the opposite side). The portion 77 is fixed by being fitted from the outside. The guide guide member 90 is supported to be openable and closable by a storage portion 79 formed on the side fence 76A so as to close a storage position indicated by a solid line and a guide position indicated by a two-dot chain line.

  As shown in FIGS. 2, 3, and 4, the swing member 15 is rotatably supported by an arm 21 as a movable auxiliary member. The arm 21 is integrally formed of synthetic resin, and has a rotation shaft 22 and a swing shaft 23. The pivot shaft 22 and the swing shaft 23 pass through the arm 21, respectively, and project both ends from the side surface of the arm 21. The rotation shaft 22 and the swing shaft 23 are offset with respect to the paper width direction. In this embodiment, the swing shaft 23 is disposed inside the casing 27 rather than the rotation shaft 22. As shown in FIG. 5, the swing member 15 includes a swing hole 20 into which the swing shaft 23 is inserted, a balance hole 24, a stopper boss 19, a mounting hole 24a, a contact surface 16, a lower end surface 17, and a notch. Like the arm 21, it is integrally formed of synthetic resin. The lower end surface 17 is formed as an extension of the contact surface 16 raised substantially vertically from the main body portion (flat plate portion) of the swing member 15, and is formed in an arcuate sector shape that protrudes downward. The swing member 15 integrally has a weight balance 25, and the swing operation of the swing member 15 relative to the paper 3 is ensured by the positional relationship between the weight balance 25 and the balance hole 24. The weight balance 25 has an L-shaped cross section, has a positioning groove 25a that engages with the stopper boss 19 and a screw hole 25b, and is fixed by a fixing screw 50 that is inserted into the mounting hole 24a in a positioned state. It is like that. As shown in FIG. 6 (a), the end of the swing shaft 23 located on the opposite side of the end inserted into the swing hole 20 is a side fence 76A shown in FIG. 10 (a). When it occupies the guide position protruding from the inner surface 78, it abuts on a guide hole 33 to be described later, and excessive swinging of the arm 21 is restricted.

  The bent end 25c of the weight balance 25 is longer than the width W of the contact surface 16 in the paper discharge direction and protrudes from the swing member 15. In the casing 27 on the side from which the bent end 25c protrudes, the bent portion 25c is allowed to move when the swinging member 15 swings, and contacts the bent end 25c when the swinging member 15 closes the guide position. A guide hole 33 having a size is formed. The swinging member 15 is regulated so as not to excessively protrude from the inner surface 78 of the side fence 76A by the contact between the guide hole 33 and the bent end 25c. That is, the bent end 25c and the guide hole 33 function as a stopper mechanism. The swing member 15 is rotatably supported by the arm 21 with the swing shaft 23 as a fulcrum by inserting the swing hole 20 into the swing shaft 23, and the swing member 15 of the side fence 76A shown in FIG. It can be swung so as to occupy a guide position protruding from the inner surface 78 and a storage position retracted from the inner surface 78 shown in FIG.

  FIG. 6 shows the link connector 14 in which the arm 21 and the swing member 15 are assembled. The contact surface 16 warps the widthwise end of the sheet 3 upward to smoothly swing the swinging member 15 and drop the sheet 3 without being caught (surface coating process or the like). Has been given. Further, the contact surface 16 has a width W extending in the discharge direction in order to prevent rubbing traces on the paper 3 and prevent the occurrence of defective images. In this embodiment, it is set to 4 mm to 7 mm.

  As shown in FIG. 2, the unit 34 includes a casing 27 fixed to the side fence 76A, a plurality of link connectors 14 accommodated in the casing 27, and the swing member 15 to a guide position and a storage position. And a retracting means 80 that is displaced by the above operation. In this embodiment, as shown in FIGS. 3 and 4, the three link connectors 14 of the first link connector 14 a to the third link connector 14 c are accommodated in the accommodating portion 27 a of the casing 27. Three support bosses 29a, 29b, and 29c are provided on the side surfaces 27b and 27c of the casing 27, respectively. A support hole 30 is formed in the support boss 29, and one end of the rotation shaft 22 of the arm 21 is rotatably inserted into the support hole 30 from the storage portion 27a side. The positions of the three support bosses 29a, 29b, 29c of each side plate are mutually arranged, and the rotation shaft 22 can be mounted on either the left or right side plate. The end portion of the rotating shaft 22 opposite to the end portion inserted into the support hole 30 abuts on an end portion 82c of a partition member 82 described later during assembly. For this reason, the rotation shaft 22 is sandwiched between the side surface 27b and the end portion 82c to prevent the rotation shaft 22 from falling off.

  In this embodiment, on the right side surface 27b of the casing 27, the first link connector 14a is attached to the first-stage support boss 29a, and the third link connector 14c is attached to the third-stage support boss 29c. Yes. On the left side surface 27c of the casing 27, a second link connecting body 14b having a symmetrical shape with respect to the first link connecting body 14a is attached to the second-stage support boss 29b.

  Each link connection body 14 is attached to the upper and lower sides of the casing 27 with an interval, and is arranged alternately (staggered) on the left and right. It has a two-row configuration in the discharge direction. With such a configuration, the left and right sides of the casing 27 are free from interference between the swinging members 15 when the paper is dropped, and the three swinging members 15 fall in the stacking direction (vertical direction) as a whole. Function.

  As shown in FIGS. 3 and 4, the retracting means 80 includes a handle member 81 serving as an operation unit that is slidable with respect to the side fence 76 </ b> A, and an action member provided so as to be movable integrally with the handle member 81. The partition member 82 is provided. The handle member 81 has a shape that covers the casing 27 and is slidably mounted on the casing 27. A plurality of elongated holes 84 extending in the stacking direction, which is the vertical direction in FIG. 4, are formed in the casing 27 at intervals in the vertical direction of the casing 27. Inside the handle member 81, a plurality of cylindrical boss portions 81a to be inserted into the respective long holes 84 are formed. Each boss portion 81 a and each long hole 84 constitute a guide mechanism for the handle member 81. A screw hole 81b is formed in each boss portion 81a.

  As shown in FIG. 3, the partition member 82 divides the first and third link coupling bodies 14 a and 14 c and the second link coupling body 14 b in the sheet discharge direction by the storage portion 27 a of the casing 27. . The partition member 82 is made of metal and has an L-shaped cross section. As shown in FIGS. 4 and 7, a part of the bent portion 82 a is cut and formed, and two attachment portions 82 b are formed. The partition member 82 is attached to the handle member 81 by joining the mounting portions 82b to the boss portions 81a and caulking with the pins shown in FIG. That is, the partition member 82 can move with the handle member 81 in a constant manner.

  A plurality of protrusions 83a, 83b, 83c are formed in the vertical direction at the end 82c of the partition member 82 near the side fence 76A. The protrusions 83 a, 83 b, 83 c are formed in a staggered arrangement corresponding to the swing member 15. In this embodiment, the protrusion 83a is above the swing member 15 of the first link connector 14a, the protrusion 83b is above the swing member 15 of the second link connector 14b, and the protrusion 83c is the third. Are arranged above the swinging member 15 of the link connector 14c. That is, each protrusion is disposed so as to be located above the notch 26 formed in each swinging member 15, and when the handle member 81 is slid downward, the handle member 81. It is comprised so that it may move integrally and may contact | abut and engage with the notch part 26 from upper direction.

  Here, the positional relationship among the notch 26, the protrusion 83, and the swing shaft 23 will be described. As shown in FIG. 10A, the notch 26 is formed so as to be positioned on the moving path of the notch 26 shown by a two-dot broken line in FIG. 10 when the swinging member 14 occupies the guide position. Has been. The protrusion 26 is disposed closer to the inner surface 78 than the center of the rotation shaft 22. The swing shaft 23 is offset in the casing 27 with respect to the rotation shaft 22. The movement path | route of the projection part 83 is shown.

  Based on FIG. 8, the guide operation of the swing member 15 when the paper 3 is discharged and stacked will be described. In this embodiment, the sheet 3 is assumed to have a standard thickness. When the paper 3 discharged by the paper discharge conveying means 67 of the stencil printing device 60 is discharged in the form of an upwardly convex arch, first, a guide guide located above the unit 34 shown in FIGS. The end portion in the width direction hits the member 90, so that the sheet 3 comes into contact with the swing member 15 of the first link coupling body 14a in a downwardly convex reverse arch form (U-shaped form). This state is the state 3c shown in FIG. After the end portion of the sheet 3 comes into contact with the contact surface 16 of the swinging member 15, the sheet 3 falls to the state 3d. Accordingly, the swing member 15 is displaced to the position f1 in the storage portion 27a with the swing shaft 23 of the arm 21 as a fulcrum. Subsequently, the end of the sheet 3 falls to the state 3e, and the swing member 15 is displaced to the position f2.

  Further, when the end of the sheet 3 falls to the state of 3f and the swinging member 15 swings to the position of f3, the end of the sheet 3 is released from the contact surface 16, and the swinging member 15 has its own weight and The weight balance 25 returns to the initial position e1, that is, the guide position, depending on the weight. The initial position e1 is obtained when the bent portion 25c of the weight balance 25 comes into contact with the stopper edge 33a of the guide hole 33. The sheet 3 that has left the swinging member 15 continuously contacts the swinging member 15 of the second link coupling body 14b and the swinging member 15 of the third link coupling body 14c in the U-shaped state, and finally In particular, the paper is stacked on the paper discharge tray 74 in a U shape. When the sheet 3 is discharged, the leading end of the sheet 3 abuts against the end fence 75, but the trailing end is supported by the swing member 15, so that rebound is also suppressed.

  In order to enable the paper 3 to smoothly fall in the U-shape, the protrusion amount F of the swing member 15 from the side fence 76A is 10 mm to 13 mm, and the inclination angle θ of the contact surface 16 is 25 ° to 40 °. Respectively. The same configuration, function, and conditions are provided on the side fence 76B side.

  Based on FIG. 9, the operation of the swinging member 15 and the like when the paper 3 stacked on the paper discharge tray 74 is taken out will be described. As shown in FIG. 9A, in this embodiment, the lower end surface 17 of the swinging member 15 has a fan shape, so that the end of the sheet 3 is prevented from entering the back side of the swinging member 15 when the sheets 3 are stacked. Thus, the behavior of the paper 3 in the paper width direction indicated by the arrow D is stabilized. When taking out the stacked sheets 3, a bundle of sheets 3 (hereinafter referred to as “sheet bundle”) is lifted in the direction of arrow E. FIG. 9A shows a state before being lifted.

  When the sheet bundle is lifted in the direction of arrow E from the state shown in FIG. 9A, the swinging member 15 is pushed up at the corner 3a of the sheet bundle. The swing member 15 is displaced so that the bent portion 25c of the weight moves upward along the stopper edge 33a of the guide hole 33, and accordingly, the arm 21 rotates about the rotating shaft 22 as shown in FIG. As shown in (b), the swing member 15 and the arm 21 are displaced. When the sheet bundle is further lifted, as shown in FIG. 9C, the swinging member 15 is displaced upward while being guided by the stopper edge 33a, and the arm 21 is also displaced. It completely enters 27a. As a result, the sheet bundle is lifted without being caught by the link connector 14c. This smooth lifting operation is similarly performed in the first and second link coupling bodies 14b and 14a. As shown in FIG. 9 (d), the link connector 14 that has entered the casing 27 returns from the storage position to the initial position e 1 due to the weight of the swing member 15 and the weight of the weight balance 25.

  When the thickness of the sheet 3 is smaller than the standard thickness and there is no stiffness, the guide member 90 remains at the guide position shown by the two-dot chain line in FIG. 2 protruding from the inner surface of the side fence 76A. Adjust only the position of. In order to perform this adjustment, as shown in FIG. 10A, the handle member 81 is slid downward. Then, as shown in FIG. 10B, the partition member 82 integrated therewith also moves in the same direction, and the protruding portion 83 contacts the notch portion 26. When the movement of the handle member 81 is further advanced, the projection 83 is inserted into the notch 26, and the swing member 15 is displaced toward the retracted position about the swing shaft 23, and finally FIG. 10 (c). The storage position shown in FIG. The swinging member 15 is held at the storage position by inserting the protrusion 26 into the notch 26.

  Thus, since the thin paper discharged by the paper discharge conveying means 67 of the stencil printing apparatus 60 is not guided by the swing member 15, the thin paper is not bent by the swing member 15, and the swing paper 15 is not swung. It is easier to hold the U-shape when dropped than when guided by the moving member 15, and can be aligned and stacked on the paper discharge tray 74. Since the guiding guide member 90 protrudes from the inner surface 78 above the swing member 15, the normal thickness or thin paper discharged by the paper discharge conveying means 67 is below the end fence 75 before contacting the end fence 75. Guided. For this reason, it is possible to suppress the reverse U-shape of the sheet, and the sheet is floated to the swinging member 15 in a stable state, so that the positional relationship with the swinging member 15 is stabilized and the sheet discharge alignment is further improved. To do.

  In order to return the swing member 15 to the guide position, the handle member 81 is slid upward. Then, the partition member 82 moves upward, the projection 83 is detached from the notch 26, and the holding force with respect to the swing member 15 is lost. For this reason, the swing member 15 is displaced from the storage position shown in FIG. 10C toward the guide position shown in FIG. 10A by the action of its own weight and the weight balance 25, and the bent end 25 c and the guide hole 33. Is held in the guide position.

  When the paper discharged by the paper discharge / conveying means 67 is thicker than a normal one, the paper itself is strong, so that the guide by the guide guide member 90 is not required, and as shown by the solid line in FIG. The operator operates the guide member 90 in a closed state so as not to protrude from the inner surface 78.

  In the above embodiment, the swing member 15 is rotatably supported by the arm 21 that is rotatably supported. However, the arm 21 is also configured to support the swing member 15 directly to the casing 27 so as to be pivotable. As in the case of having it, the sheets 3 on the sheet discharge table 74 can be aligned to obtain a good stacking function. Although the rocking members 15 are arranged in a staggered pattern, they may be arranged in a straight line in the vertical direction. In this embodiment, the swing members 15 are provided in a plurality of rows at intervals in the paper discharge direction.

  In this embodiment, the paper discharge storage device is attached to the stencil printing device 60, but it is attached, but the image forming device is not limited to the stencil printing device. It may be applied to all devices.

1 is a schematic front view of one side fence of a paper discharge storage device to which an embodiment of the present invention is applied. It is an expanded sectional view which shows the structure of the unit provided with the rocking | swiveling member with which the side fence was mounted | worn, and the retracting means. It is the figure which looked at the unit provided with the rocking | swiveling member and the retracting means from the side fence inner surface side. It is the expanded view which decomposed | disassembled the unit provided with the rocking | swiveling member and the evacuation means. It is a disassembled perspective view which shows the relationship between an arm and a rocking | swiveling member. It is a figure which shows the assembly | attachment state of an arm and a rocking | fluctuation member, (a) is a schematic side view, (b) is a schematic front view. It is an enlarged view which shows the structure of a partition member, (a) is a side view, (b) is a front view. It is a figure which shows the guidance operation | movement of the rocking | swiveling member at the time of paper fall. FIGS. 5A and 5B are diagrams illustrating a retraction operation of the swinging member when the paper is taken out, FIG. 5A is a diagram illustrating a state immediately before lifting the paper bundle, and FIG. 5B is a state in which the swinging member is displaced upward by lifting the paper bundle. (C) is a diagram showing a state where the swinging member is completely retracted inward of the side fence, and (d) is a state before the swinging member is returned to the initial position after the sheet bundle is lifted. FIG. FIGS. 5A and 5B are diagrams illustrating a swinging member switching operation by a handle member, where FIG. 5A is a diagram illustrating a state immediately before an operation, FIG. 5B is a diagram illustrating a state at the time of contact between a protruding portion and an engaging portion; FIG. 6 is a view showing a state in which the swing member occupies the storage position. 1 is a schematic front view of a stencil printing apparatus as an image forming apparatus. It is a general | schematic perspective view of the conventional paper discharge storage apparatus. FIG. 6 is a perspective view illustrating a state where a sheet is discharged in a state of being convex upward.

Explanation of symbols

3 Paper 21 Arm 14 Oscillating member 26 Part of the oscillating member 62 Image forming means 68 Paper discharge storage device 74 Paper output stand 76A, 76B Side fence 78 Side fence inner surface 80 Retraction means 81 Operation section 82 Action member 90 Guide guide Element

Claims (5)

A paper discharge tray on which sheets to be discharged are sequentially stacked, a pair of side fences extending in substantially parallel to the discharge direction provided on the paper discharge tray and facing each other in a direction substantially orthogonal to the discharge direction, and A swinging member rotatably connected to a free end portion of an arm rotatably mounted on a pair of side fences and occupying a guide position protruding from an inner surface of each side fence and a storage position retracting from the inner surface; wherein the swinging member has a contact surface deflecting the end portion in the width direction of the sheet upwards when occupying the guide position, the paper weight of a plurality provided in the paper in the vertical direction of the side fences In the paper discharge storage device that allows dropping,
Retraction means for displacing each swing member to the guide position and the storage position;
A guide guide member mounted on the side fence so as to be openable and closable above the swinging member, and having a widthwise end portion of the paper bent downwardly ;
The retracting means is provided to be slidable with respect to each side fence, and to be movable integrally with the operation part, and engages with a part of each guide member when sliding the operation part. And an action member for moving each guide member to the storage position . The paper discharge storage device according to claim 1.
The paper discharge storage device , wherein the retracting unit and the plurality of swinging members are unitized . In the paper discharge storage device according to claim 1 or 2,
The swinging member is provided in a plurality of rows in the discharging direction, and the swinging members are alternately arranged in the vertical direction in each row, and the retracting means is installed in each row independently. Storage device. In the paper discharge storage device according to claim 1, 2, or 3,
The ejecting and storing apparatus according to claim 1, wherein the swinging member is displaced from the guide position to the storing position while moving upward when taking out the sheets stacked on the discharging table. In an image forming apparatus that transfers an image formed by an image forming unit onto a sheet, discharges the sheet to a sheet discharge storage device, and stacks and stores it.
The paper discharge storage device according to any one of claims 1 to 4, wherein the paper discharge storage device.

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