JP2016005979A - Paper processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To take out many sheets of paper loaded on a paper discharge tray easily by hand from the paper discharge tray with a corrugation on the paper.SOLUTION: A paper processing device 1 including a paper discharge tray 61 for loading processed paper P along a paper discharge direction, is provided with biaxial rotation means 70 for rotating the paper discharge tray 61 around a fist rotation axis 71 and a second rotation axis 72, the first rotation axis 71 being disposed between the upstream side end part in the paper discharge direction in the discharge paper tray 61 and a fixed support part 74 in the paper processing device 1, along the paper width direction orthogonal to the paper discharge direction, the second rotation axis 72 being parallel to the paper discharge direction.

Description

  The present invention relates to a paper processing apparatus provided with a paper discharge tray on which processed paper is stacked along a paper discharge direction.

  In general, an image forming apparatus that forms (prints) an image on a sheet or a paper processing apparatus such as a copying machine that copies an image on a sheet is opened in the apparatus casing from the viewpoint of downsizing the apparatus. An in-cylinder paper discharge structure having a paper discharge space and provided with a paper discharge tray for discharging processed paper that has been printed or copied in this paper discharge space is often used.

  As an example of a sheet processing apparatus having this type of in-body sheet discharge structure, there is an image forming apparatus that can easily take out sheets stacked on a sheet discharge tray (see, for example, Patent Document 1).

  In the image forming apparatus disclosed in Patent Document 1, although not shown here, the paper discharge is open to the outside on the two front and left sides of the intermediate portion of the apparatus main body of the image forming apparatus. There is a space, and a paper discharge tray (inner tray) is provided in this paper discharge space.

  The paper discharge tray is supported so as to be rotatable toward the front side about a vertical axis disposed on the right front side near the paper discharge roller in the paper discharge space.

  When the paper stacked on the paper discharge tray is taken out, the paper discharge tray is rotated about the vertical axis to a sheet pick-up position where at least a part of the paper discharge tray occupies a position outside the space. The user can easily take out the paper from the paper discharge tray.

JP 2003-54820 A

  Incidentally, in the image forming apparatus disclosed in Patent Document 1 described above, when a paper discharge tray is provided in the paper discharge space and the paper stacked on the paper discharge tray is taken out, as described above, the paper is discharged. By rotating the paper tray around the vertical axis and projecting a part of the paper discharge tray from the inside of the apparatus main body, the paper can be easily taken out from the paper discharge tray.

  However, the image forming apparatus disclosed in Patent Document 1 requires a use space for projecting a part of a paper discharge tray provided in the paper discharge space to the outside. This is a problem because it cannot save space.

  Further, in the image forming apparatus disclosed in Patent Document 1, a concave groove bent downward on the paper discharge tray is directed from the front end of the apparatus main body toward the paper width direction orthogonal to the paper discharge direction. Is formed.

  When taking out the paper stacked on the paper discharge tray, the user's hand is inserted into the concave groove described above, and the paper is taken out from below the paper.

  However, when a large number of sheets (for example, about 500 sheets) of A3 size or the like are stacked on the discharge tray, for example, above the large number of sheets stacked on the discharge tray in the discharge space. Has no room for space.

  For this reason, the user has to put his hand into the concave groove described above and drag the lower side of the large number of sheets to the front side of the apparatus as it is, so that the user does not get stuck on the large number of sheets. Is taken out. As a result, there is a problem in that the sheet stacking state is deteriorated, the balance is lost, and a large number of sheets are dropped downward.

  Therefore, in a paper processing apparatus provided with a paper discharge tray for stacking processed paper along the paper discharge direction, it is possible to easily take out a large number of papers stacked on the paper discharge tray while sitting down. An object of the present invention is to provide a sheet processing apparatus that can save space with respect to the use space of the sheet processing apparatus.

The present invention has been made in view of the above problems, and the first invention is a paper processing apparatus provided with a paper discharge tray for stacking processed paper along the paper discharge direction.
A first rotating shaft along a paper width direction orthogonal to the paper discharge direction, between an upstream end in the paper discharge direction in the paper discharge tray and a fixed support portion in the paper processing apparatus; The paper processing apparatus is characterized in that a biaxial rotation means for rotating the paper discharge tray about a second rotation axis parallel to the paper discharge direction is provided.

The second invention is the sheet processing apparatus of the first invention described above,
The biaxial pivot means pivots the first pivot axis in the direction of lowering the front end portion on the downstream side of the paper discharge direction in the paper discharge tray and the second pivot. A paper processing apparatus, wherein a paper processing apparatus is configured to rotate a front end side of the paper processing apparatus in a paper width direction perpendicular to the paper discharge direction in the paper discharge tray in a direction of lowering about the axis. is there.

  According to the paper processing apparatus of the first invention, in the paper processing apparatus provided with the paper discharge tray for stacking processed paper along the paper discharge direction, an upstream end of the paper discharge direction in the paper discharge direction. And a fixed support portion in the sheet processing apparatus, a sheet discharge tray centering on a first rotation axis along a sheet width direction orthogonal to the sheet discharge direction and a second rotation axis parallel to the sheet discharge direction. Two-axis rotating means for rotating is provided.

  As a result, when a large number of sheets stacked on the paper discharge tray are taken out from the paper discharge tray, the user is centered on at least one of the first rotation shaft and the second rotation shaft. By rotating the paper output tray, there is room in the space above the topmost paper among the many papers stacked on the paper output tray. It becomes possible to take out. In addition, when the paper discharge tray is rotated by the biaxial rotation means, the paper discharge tray does not protrude outside the paper processing apparatus, and can take various rotating positions in the paper processing apparatus. Since it is possible to save space with respect to the use space, it is possible to provide an easy-to-use paper processing apparatus.

  According to the sheet processing apparatus of the second aspect of the invention, the biaxial turning means is arranged to lower the front end portion on the downstream side of the paper discharge direction in the paper discharge tray with the first rotation axis as the center. While rotating, the front end of the sheet processing apparatus in the sheet width direction perpendicular to the sheet discharge direction in the sheet discharge tray is rotated about the second rotation axis.

  As a result, when the paper discharge tray is rotated around the first rotation shaft provided in the two-axis rotation means while a large number of sheets are stacked, the uppermost stack stacked on the paper discharge tray. There is room in the space above the paper. Further, when the paper discharge tray is rotated around the second rotation shaft provided in the biaxial rotation means while a large number of sheets are stacked, the uppermost stack stacked on the paper discharge tray is used. Among the sheets, there is a margin in the space above the front of the sheet processing apparatus. Further, when the sheet discharge tray is rotated around the first and second rotation shafts provided in the biaxial rotation means while a large number of sheets are stacked, the sheets are stacked on the sheet discharge tray. There is room in the space above the uppermost sheet, and there is room in the space above the front of the sheet processing apparatus among the uppermost sheets stacked on the paper discharge tray.

  Accordingly, if the paper discharge tray is set to any one of the three rotational postures when the paper is discharged, a large number of sheets can be lifted upward by a user's hands and easily taken out while sitting down. As a result, since a large number of sheets do not collapse and do not fall downward, a large number of sheets can be taken out from the discharge tray with confidence.

FIG. 2 is a perspective view showing an appearance of the paper processing apparatus according to the present invention and showing a paper discharge state of a paper discharge tray that is rotatable about two axes in a paper discharge space. FIG. 3 is a front view showing an external appearance of the paper processing apparatus according to the present invention as viewed from the front side and showing a paper discharge state of a paper discharge tray that is rotatable about two axes in a paper discharge space. 1 is a configuration diagram showing the overall configuration of a sheet processing apparatus according to the present invention. FIG. 4 is a perspective view showing a paper discharge tray and a biaxial rotation means in the paper discharge section shown in FIG. 3. FIG. 5 is a perspective view illustrating a state in which a large number of sheets stacked on the sheet discharge tray illustrated in FIG. (A), (b) shows the paper processing apparatus according to the present invention in a state in which the paper discharge tray is rotated counterclockwise around the first rotation shaft provided in the biaxial rotation means. It is a perspective view and a front view. (A), (b) shows the paper processing apparatus according to the present invention in a state in which the paper discharge tray is rotated counterclockwise around the second rotation shaft provided in the biaxial rotation means. It is a perspective view and a front view. (A), (b) is a sheet processing apparatus according to the present invention, wherein the paper discharge tray is rotated counterclockwise about the first and second rotation shafts provided in the biaxial rotation means. It is the perspective view and the front view which showed the state made to do.

  Hereinafter, a preferred embodiment of a sheet processing apparatus according to the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a perspective view of the appearance of a paper processing apparatus according to the present invention, and shows a paper discharge state of a paper discharge tray that can rotate around two axes in a paper discharge space. FIG. 2 shows the appearance of the paper processing apparatus according to the present invention as seen from the front side, and shows the paper discharge state of a paper discharge tray that can be rotated around two axes in the paper discharge space.

  The sheet processing apparatus 1 according to the present invention shown in FIGS. 1 and 2 is applied to an image forming apparatus that forms (prints) an image on a sheet P, a copying machine that copies an image on the sheet P, and the like. However, any apparatus may be used as long as it can appropriately process the paper P inside the apparatus housing 4 and can stack the processed paper P on the paper discharge tray 61.

  Hereinafter, a case where the sheet processing apparatus 1 is applied to an image forming apparatus which is one type of the apparatus will be described.

  As shown in FIG. 1, a sheet processing apparatus 1 according to an embodiment of the present invention is configured as an image forming apparatus, and can perform image forming processing on a large number of sheets P at high speed.

  The paper processing apparatus 1 has a paper discharge space DK that is open to the outside at an upper intermediate portion in the apparatus housing 4, and a sheet Pg on which an image has been formed is stacked in the paper discharge space DK. A paper discharge tray 61 of the paper discharge unit 60 is provided so as to be rotatable about two axes, which will be described later, without protruding outside the paper discharge space DK, and is configured as an in-body paper discharge structure.

  At this time, in order to reduce the size of the paper processing apparatus 1, a large number of sheets of paper Pg on which images have been formed on the paper discharge tray 61 (for example, even if the height dimension of the paper discharge space DK is kept low) About 500 sheets), and by rotating the paper discharge tray 61, a large number of sheets Pg can be taken out from the paper discharge tray 61 while being placed on the paper processing apparatus 1. On the other hand, the space can be saved.

  More specifically, in the paper processing apparatus 1, the rigid base 2 is formed in a rectangular flat plate, and the casters 3 are attached to the four corners of the lower surface of the base 2, and An apparatus housing 4 is assembled in a box shape on the upper surface of the base 2.

  The above-described apparatus housing 4 is formed in a box shape using a sheet metal material, a front plate 4a on the front side of the sheet processing apparatus 1, a rear plate 4b facing the front plate 4a with a gap therebetween, Surrounded by left and right side plates 4c, 4d and a top plate 4e.

  The apparatus housing 4 is formed as a paper discharge space DK in which a front plate 4a and a left side plate 4c at an upper intermediate portion that is slightly lower than the top plate 4e are opened to the outside. A paper discharge tray 61 of a paper discharge unit 60 that is rotatable about two axes is provided in the paper space DK, and is configured as an in-body paper discharge structure.

  In the sheet processing apparatus 1, the first internal paper feed tray 31A and the second internal paper feed tray 31B are vertically separated and housed in a lower part of the front plate 4a on the front side, and can be pulled out. An original reading unit 10 is provided on the plate 4e.

  Furthermore, an operation panel unit 20 for a user to operate is provided on the front side of the sheet processing apparatus 1 and in the upper right part below the top plate 4 e of the apparatus housing 4.

  In this embodiment, the document reading unit 10 is provided on the top plate 4e of the apparatus housing 4. However, instead of the document reading unit 10, a sheet feeder or an operation panel unit may be provided.

  Here, the overall configuration of the sheet processing apparatus 1 according to the present invention will be described with reference to FIG.

  FIG. 3 shows the overall configuration of the sheet processing apparatus according to the present invention.

  As shown in FIG. 3, the paper processing apparatus 1 according to the present invention is configured as an ink jet printer, and an image can be printed on a paper P by simplex printing or duplex printing by an ink jet method.

  The sheet processing apparatus 1 includes a document reading unit 10 that reads a document, an operation panel unit 20 that operates the entire apparatus, and an internal sheet feeding unit that is installed in the apparatus housing 4 and feeds sheets P one by one. 30, a belt platen unit 40 that is installed on the downstream side of the internal paper feeding unit 30 in the paper conveyance direction and conveys the paper P, and a plurality of inks that discharge a plurality of colors facing the belt platen unit 40. An image forming unit (printing unit) 50 in which the line-type inkjet head 51 is installed, and a paper discharge tray 61 that discharges and stacks the image-formed paper Pg formed by the image forming unit 50 along the paper discharge direction. And a paper discharge tray 61 are rotated about a first rotation shaft 71 along a paper width direction orthogonal to the paper discharge direction and a second rotation shaft 72 parallel to the paper discharge direction. Biaxial turning means 70 and And a control unit 80 which controls the entire apparatus.

  In addition, a sheet conveyance path for conveying the sheet P at a constant speed in the sheet processing apparatus 1 is for first and second branch sheet feeding from the internal sheet feeding unit 30 to the belt platen unit 40 and the image forming unit 50. The conveyance paths KR1 and KR2 and the common sheet feeding conveyance path KR3, and the circulation conveyance path formed in a loop connected to the common sheet feeding conveyance path KR3 to perform single-sided printing or double-sided printing on the paper P JR, a paper discharge conveyance path HR for discharging the image-formed paper Pg, and a left side plate 4c side of the apparatus housing 4 for manually feeding the paper P are connected to the upstream side of the circulation conveyance path JR. It comprises a manual feed path TR.

  At this time, the loop-shaped circulation conveyance path JR described above is an image forming conveyance path JR1 formed horizontally between the belt platen unit 40 and the image forming unit 50 in order to form an image on the paper P. Switchback for branching downward from the downstream side of the image forming conveyance path JR1 and switching back the sheet P on which single-sided printing has been performed so that the leading edge of the sheet P is changed from the leading edge to the trailing edge. The conveyance path JR2 and the single-side printed paper P that has been switched back are turned upside down so that the single-side printed paper P is provided on the upstream side of the image forming conveyance path JR1 along the belt platen 40 below. A front / back reversing conveyance path JR3 that conveys to the registration roller pair 35 is connected in this order.

  In addition, a plurality of paper conveyance roller pairs R that convey the paper P at a constant speed are provided on the paper conveyance path at intervals so as to convey the smallest paper among a plurality of types of paper P having different paper sizes. is set up.

  A plurality of sheet sensors S that detect the passage of the sheet P are installed at appropriate positions in the sheet conveyance path, and the plurality of sheet sensors S use a light reflection type sensor or a light transmission sensor at a constant speed. In the case where the paper P transported in step S1 does not reach the preset time at each sensor position, it can be detected via the control unit 80 that a paper jam has occurred.

  Further, between the paper discharge transport path HR and the switchback transport path JR2 branched from the downstream side of the image forming transport path JR1, and between the switchback transport path JR2 and the front / back reversal transport path JR3, Flippers F for switching the transport direction of the paper P are each installed rotatably.

  First, the above-described document reading unit 10 is installed on the top plate 4e of the apparatus housing 4. Although detailed illustration is omitted here, the document is read by the scanner and the read document image information is controlled. The image is sent to the image forming unit 50 via the unit 80.

  Next, the above-described operation panel unit 20 is installed on the upper right side on the front side of the apparatus housing 4. Although not shown in detail here, a single-sided / double-sided printing selection key, a start key, and a stop key are omitted. A numeric keypad, a print number setting key, an alarm display, a liquid crystal panel, and the like.

  Next, the internal paper feeding unit 30 described above is installed in a lower part in the apparatus housing 4, and the first and second internal paper feeding trays 31 </ b> A and 31 </ b> B are provided separately in the vertical direction. In this embodiment, two types of paper P having different outer sizes are stacked in the first and second internal paper feed trays 31A and 31B, respectively, but when an image is formed on two or more types of paper P. In this case, the number of internal paper feed trays may be increased, or paper may be fed using the manual feed path TR.

  Further, among the plurality of sheets P stacked on the first and second internal sheet feed trays 31A and 31B, the sheet P is brought into contact with the uppermost sheet P so that the sheet feed rollers 32A and 32B can rotate freely. Each feeds selectively.

  The fed paper P is separated one by one when it is nipped and conveyed between the separating rollers 33A and 33B provided downstream of the sheet supply rollers 32A and 32B and the separating plates 34A and 34B. Then, it is sent to the common paper feed transport path KR3 via the first and second branch paper feed transport paths KR1 and KR2.

  Further, the leading end portion of the sheet P sent to the common paper feed transport path KR3 is installed on the upstream side of the image forming transport path JR1 toward the image forming transport path JR1 in the circulation transport path JR. It is sent to the registration roller pair 35.

  Here, the leading end of the fed paper P in the conveying direction hits the registration roller pair 35 that is stopped from rotating, and a slack is formed. It's aligned. Then, the skew of the sheet P is corrected by the registration roller pair 35 and the conveyance timing of the sheet P is adjusted.

  Thereafter, when the registration roller pair 35 starts to rotate, the sheet P whose skew has been corrected is conveyed toward the belt platen unit 40 and the image forming unit 50.

  In the internal paper feeding unit 30, the paper feeding rollers 32A and 32B, the rolling rollers 33A and 33B, and the rolling plates 34A and 34B are stacked on the first and second internal paper feeding trays 31A and 31B. This is a primary paper feeding means for feeding the paper P one by one.

  On the other hand, the registration roller pair 35 corrects the skew of the paper P fed by the primary paper feeding means and adjusts the conveyance timing to direct the paper P toward the belt platen unit 40 and the image forming unit 50. Secondary sheet feeding means for transporting.

  Next, in the belt platen section 40 described above, a belt platen 43 having a plurality of air suction holes (not shown) in a frame 42 that can be moved up and down by an elevating mechanism section 41 is formed into a belt shape, and a plurality of pulleys 44. The paper P transported on the belt platen 43 is transported downstream while being sucked and mounted by the air suction unit 45.

  The reason why the frame 42 is moved up and down by the lifting mechanism 41 is that a head cleaning mechanism (not shown) for cleaning a plurality of line inkjet heads 51 provided in the image forming unit 50 described later is used for the line inkjet head 51. This is to advance or retract downward.

  Next, the above-described image forming unit (printing unit) 50 is provided above the belt platen unit 40 at a substantially central portion in the apparatus housing 4 and is used when an image is formed on the paper P (at the time of printing). ) Is opposed to the belt platen 40 with a slight gap.

  In this image forming unit 50, a plurality of line-type inkjet heads 51 corresponding to a plurality of colors of ink IK are used for C (cyan), K (black), Fixed for M (magenta) and Y (yellow).

  Then, a color image is printed on the paper P by the plurality of line-type ink-jet heads 51 while the paper P is conveyed in the direction of the arrow by the rotation of the belt platen 43 while the paper P is fixed on the belt platen 43 by air suction. Yes.

  At this time, when a color image is printed on one side of the sheet P, the sheet P is discharged once to the sheet discharge unit 60 described below through the image forming transport path JR1. On the other hand, when color images are printed on both sides of the paper P, the paper is discharged to the paper discharge unit 60 through the image forming transport path JR1 twice in total via the circulation transport path JR.

  Next, the paper discharge unit 60 described above is provided at an upper portion in the apparatus housing 4 downstream of the belt platen unit 40 and the image forming unit 50.

  In the paper discharge unit 60, a paper discharge space DK (FIGS. 1 and 2) is provided via a paper discharge roller pair Rh provided on the most downstream side in the paper discharge conveyance path HR. The paper is discharged onto a paper discharge tray 61 provided in the inside.

  The paper discharge tray 61 can be rotated about two axes by a biaxial rotation means 70 described later in a paper discharge space DK (FIGS. 1 and 2). At this time, the upstream end of the paper discharge tray 61 in the paper discharge direction can be rotated to a fixed support portion 74 (FIG. 4) provided in the apparatus housing 4 via a biaxial rotation means 70 described later. The downstream end side of the paper discharge direction in the paper discharge tray 61 is suspended by a detachable hook member 63 (FIGS. 2 and 4) on a lower portion of the top plate 4e of the apparatus housing 4. Has been.

  The paper discharge tray 61 and the biaxial rotating means 70 for rotating the paper discharge tray 61 about two axes are used for a large number of image-formed sheets P stacked on the paper discharge tray 61. The paper discharge tray 61 can be taken out easily without being protruded to the outside of the paper discharge space DK (FIGS. 1 and 2) to be used in the space for use of the paper processing apparatus 1. In contrast, improvements have been made to save space.

  Here, the paper discharge tray 61 and the biaxial rotating means 70 will be described in detail with reference to FIGS.

  FIG. 4 is a perspective view of the paper discharge tray and the biaxial turning means in the paper discharge section shown in FIG. FIG. 5 is a perspective view showing a state in which a large number of sheets stacked on the paper discharge tray shown in FIG.

  As shown in FIG. 4, the paper discharge tray 61 of the paper discharge unit 60 is a member that is a main part of this embodiment, and is integrally formed using an ABS resin material.

  Further, the paper discharge tray 61 is formed in a long length so that the longitudinal direction of, for example, the A3 size paper P as the maximum size among the papers P having different outer sizes is along the paper discharge direction. The orthogonal paper width direction is also formed widely corresponding to the A3 size paper P.

  On the upper surface side of the paper discharge tray 61, a horizontal surface 61a, a first inclined surface 61b, and a second inclined surface 61c are connected in this order from the upstream side to the downstream side in the paper discharge direction. Yes.

  At this time, the horizontal surface 61a on the paper discharge tray 61 is substantially parallel to the base 2 (FIGS. 1 and 2) of the paper processing apparatus 1 when the image-formed paper Pg is discharged, and the image has been formed. The sheet Pg is formed in a short length with respect to the longitudinal direction of the sheet Pg.

  Further, the first inclined surface 61b on the paper discharge tray 61 is formed in a long length with an inclination of the first inclination angle α upward from the horizontal surface 61a.

  In addition, the second inclined surface 61c on the paper discharge tray 61 is gentler than the first inclined surface 61b from the first inclined surface 61b and further upward relative to the horizontal surface 61a. It is formed in a long length with an inclination of 2 inclination angles β.

  Further, the paper discharge tray 61 has a rear wall 61d that regulates a rear end portion that is an upstream end portion in the paper discharge direction of the image-formed paper Pg, and extends upward from the end portion of the horizontal surface 61a along the paper width direction. It is formed vertically. When the image-formed paper Pg discharged from the paper discharge roller pair Rh (FIG. 3) falls on the paper discharge tray 61, it slides down the second inclined surface 61c, the first inclined surface 61b, and the horizontal surface 61a by gravity. As a result, the position of the rear end of the image-formed paper Pg is regulated along the inside of the rear wall 61d.

  Further, a hook mounting member 62 is fixed to the front end portion 61e on the downstream side of the paper discharge direction of the paper discharge tray 61, and the lower end portion of the hook member 63 is rotatably supported by the hook mounting member 62. Has been.

  Further, on the paper discharge tray 61, first, second and third concave portions 61g, 61h and 61i are formed in a concave shape. These first, second, and third recesses 61g, 61h, and 61i allow a human hand or a finger to enter the back side of the lowest sheet Pg among the many sheets Pg stacked on the sheet discharge tray 61. Is formed.

  At this time, the first and second concave portions 61g and 61h are formed on the first and second inclined surfaces 61b and 61c from the end portion 61f on the front side of the apparatus in the sheet width direction toward the central portion in the sheet width direction. ing. Further, the third recess 61i is formed in the longitudinal direction along the longitudinal direction at the central portion in the paper width direction on the first and second inclined surfaces 61b and 61c so as to be able to cope with the paper Pg having a short length. ing.

  When taking out a large number of sheets Pg stacked on the discharge tray 61, the user's right hand is inserted into the first recess 61g from the front side of the apparatus housing 4, and the left hand is inserted into the second recess 61h or the third recess. By inserting it into the recess 61i and holding the bottom of a large number of sheets Pg while lifting them upward, as shown in FIG. 5, the large number of sheets Pg can be seated.

  Here, in the state where the sheet Pg (or the sheet P) on which the image has been formed is placed, the front end in the width direction of the sheet Pg (P) is held with the right hand, and the downstream end in the sheet discharge direction. When the front end portion is gripped with the left hand, the diagonal line portion of the paper Pg (P) located between the right hand and the left hand is recessed.

  When a large number of sheets Pg stacked on the paper discharge tray 61 are taken out while being manually placed, the large number of sheets Pg does not collapse and can be prevented from falling downward.

  Next, the biaxial turning means 70 also constitutes a main part of this embodiment, and is provided on the outer side surface 61 d 1 side of the rear wall 61 d formed on the paper discharge tray 61.

  In the biaxial rotation means 70 described above, the first rotation shaft 71 along the paper width direction orthogonal to the paper discharge direction and the second rotation shaft 72 parallel to the paper discharge direction are joined in a T shape in advance. In other words, one end portion of the second rotation shaft 72 is orthogonally joined to the central portion of the first rotation shaft 71 in the longitudinal direction, and the first rotation shaft 71 and the second rotation shaft 72 are connected to each other. Is composed of one part with a simple structure.

  A pair of L-shapes in which the end of the first rotation shaft 71 is formed symmetrically with respect to the front-rear direction of the apparatus housing 4 along the longitudinal direction of the first rotation shaft 71 along the paper width direction. The pair of L-shaped brackets 73F and 73R are pivotally supported in the respective holes of the brackets 73F and 73R, and the pair of L-shaped brackets 73F and 73R is long on the outer side surface 61d1 of the rear wall 61d formed on the sheet discharge tray 61. They are attached symmetrically in the front-rear direction across the central part of the direction.

  On the other hand, the other end portion of the second rotation shaft 72 is pivotally supported by a bearing member 75 attached to a fixed support portion 74 provided in the apparatus housing 4.

  As a result, the first and second rotating shafts 71 and 72 joined in a T-shape are connected to the outer surface 61 d 1 of the rear wall 61 d formed on the paper discharge tray 61, the fixed support portion 74 in the apparatus housing 4, and the like. Will be linked between.

  Further, in order to detect the initial position when the first and second rotating shafts 71 and 72 are rotated in correspondence with the time when the paper discharge tray 61 is in the paper discharge state, the first and second detection pieces 76a and 77a are provided. The first and second cylindrical members 76 and 77 are integrally fixed to the first and second rotating shafts 71 and 72.

  A first optical sensor 78 is attached to an outer surface 61 d 1 of the rear wall 61 d formed on the paper discharge tray 61 so as to face the first detection piece 76 a of the first cylindrical member 76. On the other hand, a second optical sensor 79 is attached to a fixed support portion 74 provided in the apparatus housing 4 so as to face the second detection piece 77 a of the second cylindrical member 77.

  When the first and second optical sensors 78 and 79 are shielded from light by the first and second detection pieces 76 a and 77 a of the first and second cylindrical members 76 and 77, the control unit 80 has the biaxial rotation means 70. Is displayed on a liquid crystal panel (not shown) in the operation panel unit 20, the user confirms that the paper discharge tray 61 is in the paper discharge state shown in FIGS. I can confirm.

  It should be noted that the driving force for rotating the paper discharge tray 61 around the first and second second rotation shafts 71 and 72 by the biaxial rotation means 70 configured as described above is manual. Alternatively, a rotational drive source such as a motor may be used.

  Here, regarding the operation of rotating the paper discharge tray 61 about the two axes by the two-axis rotating means 70, the above-described FIGS. 1 to 4 and the new FIGS. 6 to 8 are used in combination. explain.

  FIGS. 6A and 6B show a state in which the paper discharge tray is rotated counterclockwise around the first rotation axis provided in the biaxial rotation means. FIGS. 7A and 7B show a state in which the paper discharge tray is rotated counterclockwise around the second rotation shaft provided in the biaxial rotation means. 8A and 8B show a state in which the paper discharge tray is rotated counterclockwise around the first and second rotation shafts provided in the biaxial rotation means. Yes.

  As shown in FIGS. 1 and 2, when the image-formed paper Pg is discharged onto the paper discharge tray 61, the biaxial turning means 70 has reached the initial position, and accordingly, the paper discharge space DK Thus, the paper discharge tray 61 is in a paper discharge state.

  At this time, on the paper discharge tray 61, the horizontal surface 61a is substantially parallel to the base 2 of the sheet processing apparatus 1, and the first and second inclined surfaces 61b and 61c are located above the inside of the apparatus housing 4. Heading to The paper discharge tray 61 is suspended from the upper portion of the apparatus housing 4 via a hook member 63 attached to the front end 61e on the downstream side in the paper discharge direction.

  Then, when the image-formed paper Pg is discharged from the paper discharge roller pair Rh in the paper discharge direction, the image-formed paper Pg falls onto the paper discharge tray 61 by its own weight, and the paper of this paper Pg The position of the upstream rear end in the discharge direction is regulated along the inner side of the rear wall 61 d of the discharge tray 61.

  Thereafter, when a large number of sheets Pg stacked on the sheet discharge tray 61 are manually removed, the position of the sheet discharge tray 61 is in the sheet discharge state in the sheet discharge space DK. It is difficult to take out because there is no room in the space above the paper Pg.

  Therefore, in the present embodiment, when a large number of sheets Pg are taken out from the sheet discharge tray 61, the sheet discharge tray 61 is rotated and the sheet discharge tray 61 is rotated in any one of FIGS. Taking a dynamic posture.

  First, as shown in FIGS. 6A and 6B, after the user removes the hook member 63 suspending the paper discharge tray 61 from the apparatus housing 4, the paper is discharged while a large number of sheets Pg are stacked. The tray 61 is rotated about 10 ° to 20 °, for example, counterclockwise about a first rotation shaft 71 provided in the biaxial rotation means 70.

  Along with this, the front end portion 61e on the downstream side in the paper discharge direction in the paper discharge tray 61 is lowered downward in the paper discharge space DK without protruding outside.

  As a result, there is a margin in the space above the uppermost sheet Pg stacked on the sheet discharge tray 61.

  Thereafter, the user inserts the right hand from the front plate 4 a side, which is the front side of the device housing 4, into the first recess 61 g formed on the paper discharge tray 61, and the left hand from the left plate 4 c of the device housing 4. Is inserted into the second concave portion 61h or the third concave portion 61i formed on the paper discharge tray 61, and the lowermost portion of the large number of sheets Pg is lifted upward and gripped, so that the lower end of the large number of sheets Pg is not supported. Can be easily removed while attaching.

  Next, as shown in FIGS. 7A and 7B, after the user removes the hook member 63, which suspends the paper discharge tray 61, from the apparatus housing 4, the paper Pg is discharged while being stacked. The paper tray 61 is rotated counterclockwise by, for example, about 10 ° to 20 ° about the second rotation shaft 72 provided in the biaxial rotation means 70.

  Along with this, the end 61f side of the front side of the apparatus in the paper width direction in the paper discharge tray 61 is lowered downward in the paper discharge space DK without protruding outside.

  As a result, there is a margin in the space above the front of the apparatus housing 4 among the uppermost sheets Pg stacked on the sheet discharge tray 61.

  Thereafter, the user can easily take out a large number of sheets Pg with his / her left and right hands while sitting down by the same method as in FIG.

  Next, as shown in FIGS. 8A and 8B, after the user removes the hook member 63, which suspends the paper discharge tray 61, from the apparatus housing 4, the paper Pg is discharged while being stacked. The paper tray 61 is rotated about, for example, 10 ° to 20 ° counterclockwise around the first and second rotation shafts 71 and 72 provided in the biaxial rotation means 70.

  Along with this, the front end portion 61e on the downstream side in the paper discharge direction in the paper discharge tray 61 falls downward in the paper discharge space DK without projecting to the outside, and the front side of the apparatus in the paper width direction. The end portion 61f side of the paper also falls downward in the paper discharge space DK without protruding outward.

  As a result, there is a margin in the space above the uppermost sheet Pg stacked on the paper discharge tray 61, and there is a margin in the space above the front of the apparatus housing 4 in the uppermost sheet Pg. It is easier to take out the paper Pg in the two-way rotation posture than in the one-way rotation posture described with reference to FIGS.

  Thereafter, the user lifts a large number of sheets Pg upward with his / her left and right hands and removes them more easily than in the case of FIGS. 6 and 7 by the same method as in FIGS. be able to.

  From the above, when the paper discharge tray 61 is set to any one of the three rotation postures shown in FIGS. 6 to 8 when paper is discharged, a large number of sheets Pg are lifted upward by the user's hands to sit down. It can be easily removed. As a result, since the large number of sheets Pg does not collapse and does not fall downward, the large number of sheets Pg can be taken out from the discharge tray 61 with confidence.

  Furthermore, when the rotation posture of the paper discharge tray 61 is set to any one of FIGS. 6 to 8, the paper discharge tray 61 does not protrude outside the paper discharge space DK and does not protrude inside the paper discharge space DK. Since each rotation posture can be taken, it is possible to save space with respect to the use space of the sheet processing apparatus 1, and therefore it is possible to provide the sheet processing apparatus 1 that is easy to use.

1 ... paper processing device, 2 ... base,
4 ... device housing, 4a ... front plate, 4b ... rear plate, 4c ... left side plate, 4d ... right side plate, 4e ... top plate,
10: Document reading unit, 20: Operation panel unit,
30 ... Internal paper feed unit, 31A, 31B ... First and second internal paper feed trays,
32A, 32B ... paper feed roller, 33A, 33B ... paper roller,
34A, 34B ... thatched board, 35 ... registration roller pair,
40 ... belt platen, 43 ... belt platen,
50: Image forming section (printing section), 51: Line-type inkjet head,
60 ... paper discharge unit, 61 ... paper discharge tray, 61a ... horizontal surface, 61b ... first inclined surface,
61c ... second inclined surface, 61d ... rear wall, 61d1 ... outer surface of the rear wall, 61e ... front end,
61f ... device front side end, 61g, 61h, 61i ... first, second and third recesses,
62 ... Hook attachment member, 63 ... Hook member,
70... Two-axis rotating means, 71... First rotating shaft, 72.
73F, 73R ... a pair of L-shaped brackets, 74 ... a fixed support part, 75 ... a bearing member,
76, 77 ... first and second cylinder members, 76a, 77a ... first and second detection pieces,
78, 79 ... first and second photosensors,
80 ... control unit,
DK: space for paper discharge, P: paper, Pg: paper on which images have been formed,
R: paper transport roller pair, Rh: paper discharge roller pair, S: sensor.

Claims (2)

In a paper processing apparatus provided with a paper discharge tray for stacking processed paper along the paper discharge direction,
A first rotating shaft along a paper width direction orthogonal to the paper discharge direction, between an upstream end in the paper discharge direction in the paper discharge tray and a fixed support portion in the paper processing apparatus; 2. A paper processing apparatus, comprising: a biaxial rotation unit that rotates the paper discharge tray about a second rotation axis that is parallel to the paper discharge direction.   The biaxial pivot means pivots the first pivot axis in the direction of lowering the front end portion on the downstream side of the paper discharge direction in the paper discharge tray and the second pivot. 2. The apparatus according to claim 1, wherein the sheet is rotated in a direction of lowering the front end side of the sheet processing apparatus in the sheet width direction perpendicular to the sheet discharge direction in the sheet discharge tray around the axis. The paper processing apparatus as described.

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