JP2006001700A - Stencil printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stencil printer, printing two paper sheets during one rotation of a plate cylinder, restraining the occurrence of a paper transport jam of the respective paper sheets, and further delivering and loading the respective paper sheets to specified loading areas. <P>SOLUTION: This stencil printer 1 includes: a printing part 2 having the plate cylinder 9 and a pressing member 10; a paper feeding part 4; and a paper delivery part 7, wherein a split prepared master 51 is wrapped round the plate cylinder 9, two paper sheets are continuously fed from the paper feeding part 4 during one rotation of the plate cylinder 9, and the respective fed paper sheets are pressed to the respective corresponding preparation images 51a, 51b by the pressing member 10 to perform printing for two paper sheets with one rotation of the plate cylinder. The paper delivery part 7 has a paper delivery and transport means 23 and a paper delivery tray 24, and as the paper delivery tray 24, an area of a tray loaded with printed paper sheets can be divided into a first area A and a second area B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a stencil printing apparatus that performs printing by winding a master on a plate cylinder, and more specifically, a master in which a plate-making image on two sides is formed is used as a master, and two sheets are printed during one rotation of the plate cylinder. The present invention relates to a stencil printing apparatus that is capable of continuously feeding and press-contacting paper corresponding to each plate-making image to obtain two printed materials per one rotation of the plate cylinder.

  Conventionally, digital thermal stencil printing is known as a simple printing method. This is because a thermal head in which fine heating elements are arranged in a row is brought into contact with a heat-sensitive stencil master (hereinafter referred to as a master), and the master is conveyed by a platen roller or the like while energizing the heating elements in a pulsed manner. As a result, a perforated image based on image information is formed on the master by hot-melt perforation, and then the perforated master is wound around the plate cylinder, and the printing paper is applied to the outer peripheral surface of the plate cylinder by a pressing member such as a press roller. By pressing, ink is oozed out from the opening portion of the plate cylinder and the perforation portion of the master, and this ink is transferred to the printing paper to obtain a printed image.

  In order to use the master without waste in the stencil printing described above, it is desirable to cut the master according to the size of the document. However, when the master is cut short according to the original, the entire opening portion is not covered with the master, and the pressing member directly presses the plate cylinder opening portion and the pressing member is contaminated. In the opening part not covered by the master, the ink evaporates over time, and it takes time until the ink is filled in the same way as the part covered by the master. There is also a problem that a large amount of is generated.

  In order to prevent the occurrence of such problems, printing is performed using a master that covers the entire opening portion of the plate cylinder regardless of the size of the paper used and the size of the original to be read in a normal stencil printing apparatus. However, when printing is performed using a small-size original, the master plate-making portion increases, which is uneconomical. For this reason, a plate making apparatus that sequentially reads two small-size originals and makes the images side by side on the master for one plate wound around the plate cylinder, for example, “Patent Document 1” or “Patent Document”. 2 ”, respectively.

  However, in each of the above-described techniques, only one printed matter can be obtained per one rotation of the plate cylinder. For this reason, for example, when two masters of A4 size are made on a single master and printed on A4 size paper, the A3 size paper is fed and printed. Since the printed A3 size paper was cut in half, the cutting process was added to the normal printing process, resulting in a problem that work efficiency was lowered.

  Therefore, two originals are read in sequence, each image is made up of two masters arranged on one plate master wound around the plate cylinder, and two sheets are fed continuously for each rotation of the plate cylinder. For example, “Patent Document 3” or “Patent Document 4” discloses a technique in which each sheet fed is pressed against a corresponding image to obtain two printed materials per one rotation of the plate cylinder.

  Furthermore, in “Patent Document 5”, two end fences that are movable in the paper transport direction are provided on one discharge tray, and the discharge storage area on the discharge tray is divided into two by the two end fences. When the first discharge storage area is filled with printed paper, the end fence is moved to move the printed paper downstream in the paper transport direction, and the next discharge is placed on the discharge tray. A paper discharge device capable of doubling the paper discharge storage capacity by forming a storage area and continuing paper discharge is disclosed.

Japanese Patent Publication No. 2-21940 Japanese Utility Model Publication No. 1-115574 JP-A-7-137413 JP 2000-29133 A JP 2002-338126 A

  In the techniques disclosed in “Patent Document 3” and “Patent Document 4”, the master plate making can be performed without waste and printing on two sheets can be performed during one rotation of the plate cylinder. It is possible to reduce the printing time at the same time. However, when two sheets are fed during one rotation of the plate cylinder, the interval between the sheets is narrowed, and there is a problem that the probability of occurrence of a sheet conveyance jam due to the collision of the sheets increases.

  Also, when two different originals are made, different print images are discharged together on the paper discharge tray, and the paper must be sorted after printing, which reduces work efficiency. There is a problem. Further, even when two identical originals are made, manual work is required to divide them into different numbers of copies, and work efficiency is reduced as described above. Even if these techniques are simply combined with the technique disclosed in “Patent Document 3” or “Patent Document 4” and the technique disclosed in “Patent Document 5”, the sheet is transported from the sheet discharge means to the sheet discharge tray. Since the paper cannot be discharged to a specific area, it cannot be solved and improvement is desired.

  The present invention solves the above-described problems, can print on two sheets of paper during one rotation of the plate cylinder, and can suppress the occurrence of paper conveyance jam of each sheet. An object of the present invention is to provide a stencil printing apparatus capable of discharging and stacking the ink in a specific loading area.

  The invention according to claim 1 is a printing unit having a printing cylinder and a pressing member provided so as to be able to contact with and separate from the printing drum, a paper feeding unit that feeds paper toward the printing unit, and the printing A paper discharge unit that discharges the printed paper that has been printed by the printing unit, a divided plate-making master having a first plate-making image and a second plate-making image is wound around the plate cylinder, Two sheets are continuously fed from the sheet feeding unit during one rotation, and each sheet fed is pressed against the corresponding plate-making image by the pressing member, so that two sheets per one rotation of the plate cylinder. In the stencil printing apparatus for printing on the paper, the paper discharge unit includes a paper discharge transport unit that transports the printed paper, and a paper discharge tray that stacks the printed paper transported by the paper discharge transport unit. And the discharge tray has a first area for stacking the printed sheets. Characterized in that it is dividable structure in the band and the second region.

  According to a second aspect of the present invention, in the stencil printing apparatus according to the first aspect, the discharge tray further includes a first end fence and a second end fence against which a front end of the printed paper abuts. The stacked area of the printed sheets on the sheet discharge tray is divided into an upstream area in the sheet conveyance direction and a downstream area in the sheet conveyance direction.

  According to a third aspect of the present invention, in the stencil printing apparatus according to the second aspect, the paper feeding unit further includes a paper size detecting unit that detects a size of the paper, and the paper detected by the paper size detecting unit. The first and second end fence moving means for moving the respective end fences in the sheet conveying direction according to the size of the sheet.

  According to a fourth aspect of the present invention, in the stencil printing apparatus according to the second or third aspect of the present invention, the stencil printing apparatus further includes a conveyance speed control means for controlling a paper conveyance speed of the paper discharge conveyance member, The paper transport speed is increased when the printed paper is stacked in the downstream area in the paper transport direction as compared with the case where the printed paper is stacked in the upstream area in the paper transport direction.

  According to a fifth aspect of the present invention, in the stencil printing apparatus according to the fourth aspect, the transport speed control means prints the paper transport speed when the printed paper is stacked in an upstream area in the paper transport direction. When the printed paper is stacked in the downstream area in the paper conveyance direction, the paper conveyance speed is 1.5 times or more the printing speed.

  According to a sixth aspect of the present invention, in the stencil printing apparatus according to any one of the second to fifth aspects, the paper discharge section is further printed with respect to the paper discharge tray of the paper discharge conveying member. A discharge angle changing unit that changes a discharge angle of the paper, and the discharge angle changing unit stacks the printed paper in the upstream region in the paper transport direction and in the downstream region in the paper transport direction. And changing the discharge angle.

  According to a seventh aspect of the present invention, in the stencil printing apparatus according to any one of the second to fifth aspects, the discharge conveyance member further includes a discharge angle of the printed sheet with respect to the discharge tray. And a guide plate angle changing means for changing the angle of the guide plate, and the guide plate angle changing means stacks the printed paper in the upstream area in the paper conveyance direction. In this case, the angle of the guide plate is changed depending on whether or not the sheet is stacked in the downstream area in the sheet conveyance direction.

  According to an eighth aspect of the present invention, in the stencil printing apparatus according to any one of the second to seventh aspects, when the printed paper is further stacked in the upstream area in the paper conveyance direction, An external force applying unit that applies an external force in a direction in which the paper is directed toward the upstream side in the paper transport direction with respect to the printed paper discharged from the paper discharge transport member.

  According to a ninth aspect of the present invention, in the stencil printing apparatus according to the eighth aspect, the external force is an air flow, and the external force applying means is a blowing means.

  The invention described in claim 10 is the stencil printing apparatus according to any one of claims 1 to 9, wherein the first plate-making image and the second plate-making image are images different from each other. The first sheet pressed by the first plate-making image and the second sheet pressed by the second plate-making image are stacked in different stacking areas.

  The invention described in claim 11 is the stencil printing apparatus according to any one of claims 1 to 9, wherein the first plate-making image and the second plate-making image are images different from each other. And a setting unit that individually sets in which stacking area the first sheet pressed by the first plate-making image and the second sheet pressed by the second plate-making image are stacked. And

  The invention described in claim 12 is the stencil printing apparatus according to any one of claims 1 to 9, wherein the first plate-making image and the second plate-making image are the same image, And a setting unit that individually sets in which stacking area the first sheet pressed by the first plate-making image and the second sheet pressed by the second plate-making image are stacked. And

  According to the present invention, in the first printing mode, two sheets that are continuously fed are discharged to the discharge tray satisfactorily while suppressing the occurrence of conveyance jam, thereby greatly improving the printing efficiency. In addition, in the second printing mode, sorting according to the number of copies can be performed, and in the third printing mode, sorting can be performed according to images. Thus, an easy-to-use stencil printing apparatus can be provided.

FIG. 1 shows a stencil printing apparatus that employs a first embodiment of the present invention. In FIG. 1, a stencil printing apparatus 1 includes a printing unit 2, a plate making unit 3, a paper feeding unit 4, a plate discharging unit 5, an image reading unit 6, a paper discharge unit 7, and the like.
The printing unit 2 disposed almost at the center of the apparatus main body 8 includes a plate cylinder 9 and a press roller 10 as a pressing member. The plate cylinder 9 having a porous support plate having an aperture portion in which a large number of apertures are formed and a non-aperture portion on the outer peripheral surface corresponds to the printing speed set by the plate cylinder drive motor 83 (see FIG. 9). It is driven to rotate at the rotating peripheral speed. In the present embodiment, the printing speed can be set to any one of the first speed to the fifth speed. A plurality of mesh screens made of resin or metal mesh are wound on the aperture of the porous support plate, and the leading end of the master is sandwiched on the non-open portion of the porous support plate (not shown) A clamper is provided to be openable and closable. Inside the plate cylinder 9, known ink supply means (not shown) having an ink roller and a doctor roller for supplying ink to the inner peripheral surface of the plate cylinder 9 is disposed.

  Below the plate cylinder 15 is disposed a press roller 10 in which both ends of the support shaft are rotatably supported by a pair of arm members (not shown). The press roller 10 is configured such that each arm member is swung by a swinging means (not shown) so that the outer peripheral surface thereof can be brought into contact with and separated from the outer peripheral surface of the plate cylinder 9.

  A plate making unit 3 is disposed on the upper right side of the printing unit 2. The plate making unit 3 includes a thermal head 12 and a platen roller 13 that perform punch plate making on the master 11, master cutting means (not shown) that cuts the master 11 to a predetermined length, and a master transport roller that transports the master 11 toward the printing unit 2. It has 14 pairs. As shown in FIG. 4, the plate-making part 3 is formed by arranging two surfaces side by side in the conveying direction, as in the plate-making part disclosed in Japanese Patent Publication No. 2-21940 or Japanese Utility Model Laid-Open No. 1-115574. It has a function of making a plate-making master 51 having a plate-making image 51a and a second plate-making image 51b. The divided master-making master 51 made by the plate-making unit 3 is sent to the plate cylinder 9 and then wound on the outer peripheral surface of the plate cylinder 9.

  A sheet feeding unit 4 is disposed below the plate making unit 3. The paper feed unit 4 includes a paper feed tray 15, a paper feed roller 16, a separation pad 17, a registration roller pair 18, and the like that are moved up and down with paper P loaded thereon. The paper feed tray 15 is provided with a plurality of sensors 15a and 15b as paper size detection means for detecting the size of the stacked paper P. The paper feed unit 4 is configured to be capable of continuously feeding two sheets of paper P per one rotation of the plate cylinder 9 as in the paper feed unit disclosed in Japanese Patent Laid-Open No. 7-137413. Yes.

  A plate discharging unit 5 is disposed on the upper left side of the printing unit 2. The plate removal unit 5 includes an upper plate discharge roller 19 and a lower plate discharge roller 20 that peel and convey a used master from the outer peripheral surface, a plate discharge box (not shown) that houses the used master and is detachable from the apparatus main body 8. This is a well-known configuration having a compression plate or the like (not shown) that pushes a used master into the discharge box.

  An image reading unit 6 is disposed on the upper part of the apparatus main body 8. The image reading unit 6 includes a contact glass on which a document to be printed is placed, a scanning unit that scans and reads a document image, an imaging lens that focuses the scanned image, an image sensor that recognizes the focused image, and an image sensor This is a well-known configuration including an A / D converter that performs A / D conversion on the output image, an ADF unit that continuously processes a plurality of documents, and the like.

Disposed on the lower left side of the printing unit 2 is a paper discharge unit 7 which is a characteristic part of the present invention. The paper discharge unit 7 includes a peeling claw 21, a blower fan 22, a paper discharge transport unit 23, a paper discharge tray 24, a blower unit 25 as an external force applying unit, and the like.
The peeling claw 21 is swingably attached to the apparatus main body 8 and selectively occupies a position where its tip is close to the outer peripheral surface of the plate cylinder 9 and a position where it is separated by the operation of a claw swinging means (not shown). . The blower fan 22 disposed above the peeling claw 21 blows air toward a proximity portion between the tip of the peeling claw 21 and the outer peripheral surface of the plate cylinder 9. The printed paper P is peeled from the outer peripheral surface of the plate cylinder 9 by the action of the peeling claw 21 and the blower fan 22.

A paper discharge conveying means 23 is disposed below the peeling claw 21. The paper discharge transport unit 23 includes a driving roller 26, a driven roller 27, an endless belt 28, a suction fan 29, a jump plate 30, and the like.
As shown in FIG. 2, three drive rollers 26, which are finely divided rollers, are attached to the drive roller shaft 26a. Both ends of the drive roller shaft 26a are rotatably supported by the apparatus main body 8, and the conveyance means main body 31 is rotatably supported via a bearing (not shown). A timing pulley 32 for transmitting a rotational driving force is attached to one end side of the driving roller shaft 26a.

  Three driven rollers 27, which are finely divided rollers, are attached to the driven roller shaft 27 a corresponding to the driving roller 26. Both ends of the driven roller shaft 27a are rotatably supported by the conveying means body 31 via a bearing (not shown). Between the driving roller 26 and the corresponding driven roller 27, an endless belt 28 made of a friction resistance member such as rubber is stretched.

  Near the one end side of the drive roller shaft 26a, a variable rotation speed type drive motor 33 having a pinion 33a on its output shaft is disposed. The rotational speed of the drive motor 33 is controlled by a control means 84 to be described later. At this time, the control means 84 functions as a conveyance speed control means. A two-stage gear 34 integrally having a gear 34a and a timing pulley 34b is rotatably provided in the vicinity of the pinion 33a, and the gear 34a meshes with the pinion 33a. Further, a timing belt 35 is stretched between the timing pulley 34b and the timing pulley 32. With this configuration, the rotational driving force of the drive motor 33 is the pinion 33a, the gear 34a, the timing pulley 34b, the timing belt 35, and the timing pulley 32. To the driving roller shaft 26a, and each driving roller 26 is rotationally driven. Thereby, each endless belt 28 stretched between each drive roller 26 and each driven roller 27 is moved in the direction indicated by the arrow in FIG.

  A plurality of upper surface plates 31a divided by the endless belts 28 are provided on the upper surface of the conveying means body 31, and a plurality of hole portions 31b are formed in each upper surface plate 31a. Below one upper surface plate 31a, two sensors 36a and 36b for detecting the printed paper P to be conveyed are arranged. Signals from the sensors 36a and 36b are output to the control means 84 described later.

  A suction fan 29 is fixed to the lower surface of the transport means body 31. The suction fan 29 causes the inside of the transport means body 31 formed in a box shape by its operation to be a negative pressure, and sucks the printed paper P transported on the endless belt 28 through each hole 31b. On both outer sides of the upper surface plates 31a located on both outer sides, jump plates 30 for placing the printed paper P conveyed by the paper discharge conveying means 23 are disposed. In this embodiment, the jump plate 30 is fixed to the transport means body 31 at a predetermined angle, and has the same function and configuration as the conventional one.

As shown in FIG. 3, a discharge angle changing means 37 is disposed below the paper discharge conveying means 23. The discharge angle changing means 37 includes a stepping motor 38, two-stage gears 39 and 40, a timing pulley 41, a link mechanism 42, and the like.
A pinion 38 a is attached to the output shaft of the stepping motor 38, and the pinion 38 a meshes with the large-diameter gear 39 a of the two-stage gear 39. The two-stage gear 39 has a small-diameter gear 39b integrally with the large-diameter gear 39a. The small-diameter gear 39b meshes with the gear 40a of the two-stage gear 40. The two-stage gear 40 includes a timing pulley 40b that is integral with the gear 40a. A timing belt 50 is stretched between the timing pulley 40b and a timing pulley 41 that is rotatably supported by the apparatus main body 8.

  One end of the first link 43 is rotatably attached to the timing pulley 41, and the other end of the first link 43 is rotatable to the other end of the second link 45 that is rotatably supported by the support plate 44. Is attached. The support plate 44 is rotatably supported by a bracket 46 fixed to the apparatus main body 8, and has one end rotatably supported by the other end of a third link 47 that is rotatably attached to the transport means main body 31. Yes. The link mechanism 42 is comprised by the 1st link 43, the support plate 44, the 2nd link 45, the bracket 46, and the 3rd link 47 among the above-mentioned structures.

  With the above-described configuration, when the stepping motor 38 rotates by a predetermined number of steps, the rotational force is transmitted to the timing pulley 41 via the second gear 39, the second gear 40, and the timing belt 50, and the timing pulley 41 is rotationally driven. Is done. By this rotation, the first link 43 connected to the timing pulley 41 rotates, and the conveying means body 31 connected via the second link 45, the support plate 44, and the third link 47 swings around the drive roller shaft 26a. As a result, the sheet delivery means 23 is selectively positioned at one of the first, second, and third positions described below.

  A detection piece 48 is attached to the end of the conveying means body 31 on the drive roller 26 side, and a sensor 49a and a sensor 49b are provided above and below the detection piece 48, respectively. As shown in FIG. 3 (a), the sensor 49a is disposed when the paper discharge conveying means 23 occupies a first position where the driven roller 27 is swung downward from the driving roller 26, and FIG. ), The detection piece 48 is detected when the driven roller 27 and the driving roller 26 occupy a second position occupying a horizontal position. The sensor 49b has a third position in which the driven roller 27 is swung upward from the driving roller 26 when the paper discharge conveyance means 23 occupies the second position and as shown in FIG. The detection piece 48 is detected when occupied. Here, the first position and the third position are set such that the inclination angle from the second position is within 30 degrees.

  A paper discharge tray 24 is disposed on the downstream side in the paper transport direction of the paper discharge transport means 23. As shown in FIG. 5, the paper discharge tray 24 includes a paper discharge tray main body 52, a pair of side fences 53 a and 53 b, and two end fences 54 and 55. The end fence 54 is formed to be lower than the end fence 55.

  A hollow box-shaped discharge tray main body 52 on which the printed paper P is stacked on the upper surface is fixedly or detachably attached to the apparatus main body 8 at its upstream end in the paper transport direction. Long holes 52a, 52b, 52c, and 52d are formed as movement paths for the fences 53a and 53b and the end fences 54 and 55, respectively.

  Inside the discharge tray main body 52, rack portions 53c and 53d extending in the width direction of the paper P are disposed as shown in FIG. 6, and the side fence 53a and the rack portion 53c are connected through an elongated hole 52a. The side fence 53b and the rack portion 53d are integrally coupled to each other through a long hole 52b. Each rack part 53c, 53d is arranged at a predetermined interval so that the respective tooth faces face each other, and a detection piece 53e is attached to the side facing the tooth face of the rack part 53d.

  Between each rack part 53c, 53d, the two-stage gear 56 which has the pinion 56a which each meshes | engages with the tooth surface of each rack part 53c, 53d is arrange | positioned. The two-stage gear 56 integrally includes a pinion 56 a and a timing pulley 56 b having a diameter larger than that of the pinion 56 a and is rotatably supported by the discharge tray main body 52.

  A drive motor 57 having a worm 57a on the output shaft is disposed on the right side of the rack portion 53c, and in the vicinity thereof, a worm wheel 58a meshing with the worm 57a and a timing pulley 58b provided integrally therewith are provided. A two-stage gear 58 is provided. The two-stage gear 58 is rotatably supported by the paper discharge tray body 52, and a timing belt 59 is stretched between the timing pulleys 56b and 58b. With this configuration, the rotational driving force from the drive motor 57 is transmitted to the pinion 56a via the worm 57a, the worm wheel 58a, the timing pulley 58b, the timing belt 59, and the timing pulley 56b, and each rack portion 53c meshing with the pinion 56a, The side fences 53a and 53b integrated therewith are moved in the same direction as the rack portions 53c and 53d.

  A plurality of position detection sensors 60 are arranged on the left side of the rack portion 53d. Each position detection sensor 60 is disposed at a position corresponding to a standard sheet width (for example, A5, B5, A4, B4, A3), detects the detection piece 53e, and outputs a signal to the control means 84 described later. To do.

  Inside the discharge tray main body 52 and on the downstream side of the rack portions 53c and 53d in the paper transport direction, rack portions 54a and 55a extending in the paper transport direction are disposed. The end fence 55 and the rack portion 55a are integrally coupled to the portion 54a through a long hole 52c, and the end fence 55 and the rack portion 55a through a long hole 52d, respectively. Each rack part 54a, 55a is arranged at a predetermined interval so that the respective tooth surfaces face each other, and detection pieces 54b, 55b are respectively provided on the sides facing the tooth surfaces of each rack part 54a, 55a. It is attached.

  A two-stage gear 61 having a pinion 61a that meshes with the rack portion 54a is disposed in the vicinity of the rack portion 54a. The two-stage gear 61 integrally includes a pinion 61a and a gear 61b having a larger diameter than the pinion 61a, and is rotatably supported by the discharge tray main body 52. The two-stage gear 61 includes an electromagnetic clutch 61c that connects and disconnects the pinion 61a and the gear 61b. The operation of the electromagnetic clutch 61c is controlled by the control means 84 described later.

  A two-stage gear 62 having a pinion 62a that meshes with the rack portion 55a is disposed in the vicinity of the rack portion 55a. The two-stage gear 62 integrally includes a pinion 62a and a gear 62b having a larger diameter than the pinion 62a, and is rotatably supported by the paper discharge tray main body 52. The two-stage gear 62 includes an electromagnetic clutch 62c that connects and disconnects the pinion 62a and the gear 62b. The operation of the electromagnetic clutch 62c is controlled by the control means 84 described later.

  A two-stage gear 63 and an idle gear 64 are disposed between the two-stage gears 61 and 62. The two-stage gear 63 integrally includes a gear 63a that meshes with the gear 61b and a timing pulley 63b having a larger diameter than the gear 63b, and is rotatably supported by the paper discharge tray body 52. The idle gear 64 meshes with the gear 63a and the gear 62b, respectively, and is rotatably supported by the paper discharge tray main body 52.

  A drive motor 65 having a worm 65a on the output shaft is disposed on the left side of the idle gear 64, and in the vicinity thereof, a worm wheel 66a meshing with the worm 65a and a timing pulley 66b provided integrally therewith are provided. A two-stage gear 66 is provided. The two-stage gear 66 is rotatably supported by the discharge tray main body 52, and a timing belt 67 is stretched between the timing pulleys 63b and 66b. With this configuration, the rotational driving force from the drive motor 65 is transmitted to the gear 63a via the worm 65a, the worm wheel 66a, the timing pulley 66b, the timing belt 67, and the timing pulley 63b, and the electromagnetic clutch 61c is on and the electromagnetic clutch 62c. When is turned off, the rotational force from the gear 63a is transmitted to the rack portion 54a via the gear 61b and the pinion 61a, and the end fence 54 integrated therewith is moved in the sheet conveying direction. Further, when the electromagnetic clutch 61c is off and the electromagnetic clutch 62c is on, the rotational force from the gear 63a is transmitted to the rack portion 55a via the idle gear 64, the gear 62b, and the pinion 62a, and the end fence 55 integrated therewith. Is moved in the paper transport direction. The drive motor 65, the worm 65a, the two-stage gear 66, the timing belt 67, the two-stage gears 61, 62, 63, the idle gear 64, and the rack portions 54a, 55a form the first and second end fence moving means 104. It is configured.

  A plurality of position detection sensors 68 are disposed at positions facing the tooth surfaces of the rack portion 54a, and a plurality of position detection sensors 69 are disposed at positions facing the tooth surfaces of the rack portion 55a. Each of the position detection sensors 68 and 69 is disposed at a position corresponding to the fixed sheet length. Each position detection sensor 68 detects the detection piece 54b, and each position detection sensor 69 detects the detection piece 55b. Then, a signal is output to each control means 84 described later.

  A blower unit 25 is disposed above the discharge tray 24. The blower means 25 has a blower drive mechanism 70 shown in FIG. 7 and a blower member 71 shown in FIG. The blower drive mechanism 70 includes a drive motor 72, a blower pump 73, and the like. The drive motor 72 is attached to the apparatus main body 8, and the timing pulley 72a is attached to the output shaft. In the vicinity of the drive motor 72, a two-stage gear 74 having a timing pulley 74a and a gear 74b integrally is disposed. The two-stage gear 74 is rotatably supported by the apparatus body 8, and a timing belt 75 is stretched between the timing pulleys 72a and 74a.

  A gear 76 is disposed in the vicinity of the two-stage gear 74. The gear 76 is rotatably supported by the apparatus main body 8 while meshing with the gear 74b, and one end of a rod 77 connected to a piston (not shown) of the pump 73 is rotatably attached near the periphery of the gear 76. Yes. A hose 78 is connected to an air discharge port (not shown) of the pump 73, and the rotational driving force of the drive motor 72 is transmitted to the rod 77 via the timing pulley 72 a, the timing belt 75, the timing pulley 74 a, the gear 74 b, and the gear 76. As the rod 77 reciprocates, air is discharged from the hose 78.

  The blower member 71 is mainly composed of mounting brackets 79a and 79b, a main pipe 80, and a plurality of branch pipes 81. One end of each of the mounting brackets 79a and 79b is fixed to the outside of the apparatus main body 8 and above the sheet discharge tray 24, and the other end is pivoted by a main pipe 80 which is a hollow rod closed at both ends. It is attached freely. The connection portion between each mounting bracket 79a, 79b and the main pipe 80 is configured to generate a certain holding force so that the main pipe 80 is fixed in an arbitrary state (angle). One end of a plurality of branch pipes 81, which are hollow rods whose both ends are released, are integrally fixed to the main pipe 80 at equal intervals by welding or the like. Further, a connection port 80a to which the hose 78 is connected is provided at a portion of the main pipe 80 facing the branch 81 attachment portion. Further, as shown in FIG. 1, a hood 82 that covers the blowing member 71 is provided outside the blowing member 71.

  With the above-described configuration, when the drive motor 72 is driven to rotate, the pump 73 discharges air, and the discharged air is discharged uniformly from each branch pipe 81 through the hose 78 and the main pipe 80. The discharge direction of the air from the branch pipe 81 can be arbitrarily changed by swinging the main pipe 80. The operation of the drive motor 72 that discharges air is controlled by a control unit 84 described later.

  FIG. 9 shows an operation panel disposed on the upper front surface of the apparatus main body 8. In the figure, the operation panel 85 includes a select switch in addition to a known configuration such as a plate making start key 86, a printing start key 87, a stop key 88, a numeric keypad 89, a display device 90 including a 7-segment LED, a display device 91 including an LCD. A printing mode switching unit 92 and a printing speed setting unit 93.

The printing mode switching unit 92 has a function of switching the printing mode by the stencil printing apparatus 1 to any one of the first to third printing modes described below.
In the first printing mode, as shown in FIG. 1, the end fences 54 and 55 are joined to each other, and the stacking area of the printed paper P on the paper discharge tray main body 52 is one. This is the method.

  In the second printing mode, as shown in FIG. 11 or FIG. 12, the end fences 54 and 55 are separated from each other, and the stacked area of the printed sheets P on the discharge tray main body 52 is positioned downstream in the sheet conveying direction. This is a method in which the number of sheets to be stacked is set for each of the areas A and B that are positioned upstream of the sheet conveyance direction. Here, FIG. 11 shows a case where the first plate-making image 51a and the second plate-making image 51b formed on the divided plate-making master 51 are the same image (both are printed paper a), and FIG. 12 is the first plate-making image. The case where 51a and the 2nd platemaking image 51b are mutually different images (printed paper a and printed paper b) is shown. In the second printing mode, the printed paper a or printed paper b discharged from the paper discharge transport unit 23 is stacked after the number of sheets set in one of the areas (A or B) is stacked. The rest is loaded in the area (B or A).

  In the third printing mode, as shown in FIG. 13, the end fences 54 and 55 are separated from each other, and an area A in which the stacked area of printed sheets P on the discharge tray main body 52 is located downstream in the sheet conveying direction. And the area B located upstream in the sheet conveyance direction, and the two printed sheets P discharged every rotation of the plate cylinder are distributed to each area. In the example shown in FIG. 13, the first platemaking image 51a and the second platemaking image 51b are different from each other.

  The printing speed setting means 93 is used when setting the printing speed in the stencil printing apparatus 1, and is a deceleration key 93a that is pressed to decrease the printing speed, an acceleration key 93b that is pressed to increase the printing speed, It has a speed display device 93c composed of LEDs for displaying the current printing speed. In this embodiment, the printing speed of the stencil printing apparatus 1 is configured to select one of the first speed to the fifth speed, and the example shown in FIG. 9 indicates that the current printing speed is three speeds. .

  FIG. 10 shows a block diagram of the control means 84 used in the stencil printing apparatus 1. A control means 84 comprising a well-known microcomputer having a CPU, ROM, RAM, and the like is based on output signals from the operation panel 85 and various sensors, the printing unit 2, the plate making unit 3, the paper feeding unit 4, the plate discharging unit 5, and the image. It has a function of controlling operations of the reading unit 6 and the paper discharge unit 7.

Based on the above configuration, the operation of the stencil printing apparatus 1 will be described below.
Prior to printing, the operator uses the print mode switching unit 92 to select which of the first to third print modes is to be used for printing. First, a case where the first print mode is selected will be described.

  The operator sets a document to be printed on the image reading unit 6, loads the paper P to be used for printing on the paper feed tray 15, and presses the plate making start key 86. At this time, the image reading unit 6 is provided with whether or not the size of the original is a size that can be made by the divided master-making master 51 and whether or not the size of the original and the size of the paper P are equal. This is confirmed by the original size detection sensor and the sensors 15a and 15b. If the size of the document is not a size that can be made by the divided master plate 51, or if the size of the document and the size of the paper P are different, this is displayed on the display device 91, and the following operations are performed. Absent.

  When the sizes of the original and the paper P are confirmed and it is determined that printing is possible, the control means 84 to which signals from the sensors 15a and 15b are input sends an operation command to the drive motor 57, and the side fences 53a and 53b move. Is done. When the control means 84 determines that each side fence 53a, 53b has reached a position corresponding to the size of the paper P based on the signal from the position detection sensor 60 that has detected the detection piece 53e, the operation of the drive motor 57 is stopped. Is done.

  With the operation of the drive motor 57, an operation command is sent from the control means 84 to the drive motor 65 and the electromagnetic clutches 61c and 62c, and the end fences 54 and 55 are moved. When the control means 84 determines that the end fences 54 and 55 have reached the position shown in FIG. 1 located on the most downstream side in the sheet conveyance direction, the operation of the drive motor 65 is stopped.

  Thereafter, when the plate making start key 86 is pressed again by the operator, the plate cylinder 9 and the plate discharging unit 5 are operated, and the used master is peeled off from the outer peripheral surface of the plate cylinder 9. In parallel with the plate removal operation, the image reading unit 6 performs a document image reading operation, and the plate-making unit 3 makes a plate-making master 51 based on the read document image. The master plate 51 that has been subjected to plate making is wound around the outer peripheral surface of the plate cylinder 9 after the plate discharging operation is completed.

  When the winding operation is completed, a command is sent from the control means 84, the stepping motor 38 is activated, and the paper discharge conveying means 23 occupies the second position shown in FIG. After positioning the paper discharge conveyance means 23, the plate cylinder 9 is driven to rotate at a predetermined low speed, and two sheets of paper P are continuously fed from the paper feed unit 4. Each fed paper P is timed by the registration roller pair 18 and then sent to the printing unit 2 one after another, and is pressed by the press roller 10 against the divided plate-making master 51 on the plate cylinder 9. By this pressing, the first sheet P and the first plate-making image 51a are pressed, and then the second sheet P and the second plate-making image 51b are pressed. From the ink supply means, the inner peripheral surface of the plate cylinder 9 is pressed. The ink supplied to the sheet P is transferred onto each sheet P via a porous support plate, a mesh screen, and a porous support body of the divided master plate 51, and printing is performed.

  The first sheet P to which the ink has been transferred is peeled off from the outer peripheral surface of the plate cylinder 9 by the peeling claw 21 and the blower fan 22, and is discharged at the same sheet conveying speed as the rotational peripheral speed of the plate cylinder 9. It falls on the conveying means 23. When the sensor 36a detects the leading edge of the first sheet P, a command is sent from the control means 84 to the drive motor 33, the rotational peripheral speed of the drive motor 33 is increased, and the sheet conveyance speed of the sheet conveyance means 23 is increased. The speed is increased by 1.5 times. The first sheet P is conveyed by the accelerated sheet conveying means 23 and discharged to the sheet discharge tray 24.

  After the first sheet P is sent to the sheet conveying means 23, the second sheet P is separated from the outer peripheral surface of the plate cylinder 9 by the separation claw 21 and the blower fan 22. The peeled second sheet P falls onto the sheet conveying means 23, and when the sensor 36a detects the leading edge of the second sheet P, a command is sent from the control means 84 to the drive motor 33, and the drive motor 33 The rotational peripheral speed is reduced and the paper transport speed of the paper transport means 23 is reduced to the initial speed. The second sheet P is conveyed by the decelerated sheet conveying means 23 while maintaining a predetermined distance from the first sheet P, and is discharged to the sheet discharge tray 24.

  When the printing operation is completed, the printing operation is subsequently performed. The operator depresses the numeric keypad 89 to set the number of prints on the display device 90, and depresses the deceleration key 93a or the acceleration key 93b to set the printing speed. In this embodiment, the printing linear speed (rotational peripheral speed) of the plate cylinder 9 corresponding to the printing speed (1st to 5th speed), the paper transport speed of the paper discharge transport means 23 for the first paper P, and the second paper Table 1 shows the sheet conveyance speed of the sheet discharge conveyance unit 23 with respect to the sheet P.

  When the print start key 87 is pressed by the operator after the number of prints and the print speed are set, the plate cylinder 9 is driven to rotate at a rotational peripheral speed corresponding to the set print speed and the paper is fed from the paper supply unit 4. P is continuously fed by two sheets, and a printing operation is performed. When the set number of prints is consumed, the operation of each part of the stencil printing apparatus 1 is stopped, and the stencil printing apparatus 1 again enters a print standby state.

Next, a case where the second print mode is selected will be described.
The operator sets a document to be printed on the image reading unit 6, loads the paper P to be used for printing on the paper feed tray 15, and presses the plate making start key 86. At this time, as in the first printing mode, both the size of the original is a size that can be made by the divided master-making master 51 and whether the size of the original and the size of the paper P are equal. If it is confirmed that the size of the document is not a size that can be made by the divided master-making master 51, or if the size of the document is different from the size of the paper P, this is displayed on the display device 91, and the following operations are performed. Not done.

  When the sizes of the original and the paper P are confirmed and it is determined that printing is possible, the control means 84 to which signals from the sensors 15a and 15b are inputted sends an operation command to the drive motor 57 and moves the side fences 53a and 53b. Let When the control means 84 determines that each side fence 53a, 53b has reached a position corresponding to the size of the paper P based on the signal from the position detection sensor 60 that has detected the detection piece 53e, the operation of the drive motor 57 is stopped. Is done.

  With the operation of the drive motor 57, an operation command is sent from the control means 84 to the drive motor 65 and the electromagnetic clutches 61c and 62c, and the end fences 54 and 55 are moved. Then, when the control means 84 determines that the end fences 54 and 55 have reached the position corresponding to the size of the paper P based on the signals from the position detection sensors 68 and 69 that detect the detection pieces 54b and 55b, the driving is performed. The operation of the motor 65 is stopped. As the end fences 54 and 55 are moved, as shown in FIG. 14, on the paper discharge tray main body 52, an area A on the downstream side in the paper transport direction and a paper transport direction are stacked as areas on which the printed paper P is stacked. A region B located on the upstream side is formed.

  Thereafter, when the plate making start key 86 is pressed again by the operator, the plate cylinder 9 and the plate discharging unit 5 are operated to perform the plate discharging operation. In parallel with the plate removal operation, the image reading unit 6 performs a document image reading operation, and the plate-making unit 3 makes a plate-making master 51 based on the read document image. The master plate 51 that has been subjected to plate making is wound around the outer peripheral surface of the plate cylinder 9 after the plate discharging operation is completed.

  When the winding operation is completed, a command is sent from the control means 84, the stepping motor 38 is operated, and the paper discharge conveying means 23 occupies the third position shown in FIG. After positioning of the paper discharge conveying means 23, the plate cylinder 9 is driven to rotate at a predetermined low speed, and two sheets of paper P are continuously fed from the paper feed section 4, and the plate is printed in the same manner as in the first printing mode. The attachment is done.

  The first sheet P to which the ink has been transferred is peeled off from the outer peripheral surface of the plate cylinder 9 by the peeling claw 21 and the blower fan 22, and is discharged at the same sheet conveying speed as the rotational peripheral speed of the plate cylinder 9. It falls on the conveying means 23. When the sensor 36a detects the leading edge of the first sheet P, a command is sent from the control means 84 to the drive motor 33, the rotational peripheral speed of the drive motor 33 is increased, and the sheet conveyance speed of the sheet conveyance means 23 is increased. The speed is increased by 1.5 times. The first sheet P is conveyed by the accelerated sheet conveying means 23 and discharged to the area A on the sheet discharge tray 24.

  After the first sheet P is sent to the sheet conveying means 23, the second sheet P is separated from the outer peripheral surface of the plate cylinder 9 by the separation claw 21 and the blower fan 22. The peeled second sheet P falls onto the sheet conveying means 23, and when the sensor 36a detects the leading edge of the second sheet P, a command is sent from the control means 84 to the drive motor 33, and the drive motor 33 The rotational peripheral speed is reduced and the paper transport speed of the paper transport means 23 is reduced to the initial speed. The second sheet P is conveyed by the decelerated sheet conveying means 23 while maintaining a predetermined distance from the first sheet P, and is discharged to the area A on the sheet discharge tray 24.

  When the printing operation is completed, the printing operation is subsequently performed. The operator depresses the numeric keypad 89 to set the number of prints on the display device 90, and depresses the deceleration key 93a or the acceleration key 93b to set the printing speed. Next, the operator uses the numeric keypad 89 and the display device 91 to individually set the number of sheets discharged to the area A and the number of sheets discharged to the area B. For example, after the plate-making operation is completed, a message “Please set the number of sheets to be ejected to the area A” is displayed on the display device 91. After the confirmation, the display device 91 displays “Please set the number of sheets to be ejected to the area B” and input in the same manner. As a result, the number of printed sheets stacked in the area A and the area B is set. At the time of this setting, the numeric keypad 89 and the display device 91 function as setting means. Note that the total number of sheets set in each of the areas A and B is the same value as the number of printed sheets set at the most location.

  After setting the number of printed sheets, the printing speed, and the number of discharged sheets for each area, when the printing start key 87 is pressed by the operator after the paper P used for printing is removed from the area A, the plate cylinder 9 is set. The sheet P is rotated at a rotational peripheral speed corresponding to the printing speed, and two sheets of paper P are continuously fed from the sheet feeding unit 4 to perform a printing operation. The printed paper P is continuously discharged to the area A by the paper discharge conveying means occupying the third position as shown in FIG.

  Then, when the number of discharged sheets to the area A is achieved, a command is sent from the control means 84 to the drive motor 33, the drive motor 33 is operated, and the discharge conveying means 23 is moved to the first position shown in FIG. Is positioned. During this time, the plate cylinder 9 and the paper feeding unit 4 continue to operate, and the paper P printed by the printing unit 2 is discharged by the paper discharge conveying means 23 occupying the first position as shown in FIG. It is discharged to the area B on the tray 24. When the paper P is discharged to the area B, a command is sent from the control means 84 to the drive motor 72, and the drive motor 72 is operated to reciprocate the rod 77, whereby air is sent from the pump 73 to the hose 78. Sent. The sent air is discharged from each branch pipe 81 through the main pipe 80, and the paper P discharged from the paper conveying means 23 is dropped into the region B. Then, when the number of discharged sheets to the area B is achieved and the set number of printed sheets is consumed, the operation of each part of the stencil printing apparatus 1 is stopped, and the stencil printing apparatus 1 again enters a print standby state.

  In the second printing mode, when the first plate making image 51a and the second plate making image 51b formed on the divided plate making master 51 are the same image, the mode shown in FIG. When the two plate-making images 51b are different from each other, the mode shown in FIG.

Next, a case where the third print mode is selected will be described.
The operator sets a document to be printed on the image reading unit 6, loads the paper P to be used for printing on the paper feed tray 15, and presses the plate making start key 86. At this time, in the same way as in the first printing mode and the second printing mode, whether the size of the document is a size that can be subjected to the plate-making master 51, and the size of the document and the size of the paper P Are equal to each other, and if the size of the document is not a size that can be subjected to the plate-making by the divided master-making master 51, or if the size of the document and the size of the paper P are different, the display device 91 notifies the fact. The following operations are not performed.

  When the sizes of the original and the paper P are confirmed and it is determined that printing is possible, the control means 84 to which the signals from the sensors 15a and 15b are inputted issues an operation command to the drive motors 57 and 65 and the electromagnetic clutches 61c and 62c. In the same manner as in the second printing mode, the side fences 53a and 53b and the end fences 54 and 55 are moved. On the discharge tray main body 52, as in the second printing mode, an area A located downstream in the paper conveyance direction and an area B located upstream in the paper conveyance direction as areas for stacking printed paper P And are formed.

  Thereafter, when the plate making start key is pressed again by the operator, the plate removing operation, the reading operation, and the plate making operation are continuously performed as in the second printing mode. In the plate making unit 3, a divided pre-made master 51 having images in which the first plate making image 51 a and the second plate making image 51 b are different from each other is wound around the outer peripheral surface of the plate cylinder 9.

  When the winding operation is completed, a command is sent from the control means 84, the stepping motor 38 is actuated, and the paper discharge conveying means 23 occupies the third position. Thereafter, the plate cylinder 9 is rotationally driven at a predetermined low speed, and two sheets of paper P are continuously fed from the sheet feeding unit 4. Each fed paper P is timed by the registration roller pair 18 and then sent to the printing unit 2 one after another, and is pressed by the press master 10 onto the divided plate-making master 51 on the plate cylinder 9. The attachment is done.

  The first sheet P to which the ink has been transferred is peeled off from the outer peripheral surface of the plate cylinder 9 by the peeling claw 21 and the blower fan 22, and is discharged at the same sheet conveying speed as the rotational peripheral speed of the plate cylinder 9. It falls on the conveying means 23. When the sensor 36a detects the leading edge of the first sheet P, the rotational peripheral speed of the drive motor 33 is increased and the sheet conveying speed of the sheet conveying means 23 is increased by 1.5 times. The first sheet P is conveyed by the accelerated sheet conveying means 23 and discharged to the area A on the sheet discharge tray 24.

  When the first sheet P is sent to the sheet conveying means 23, when the trailing edge of the first sheet P passes the sensor 36b, a command is sent from the control means 84, the stepping motor 38 is activated, and the sheet is conveyed and conveyed. Means 23 occupy the first position. Around that time, the second sheet P is separated from the outer peripheral surface of the plate cylinder 9 by the separation claw 21 and the blower fan 22 and falls onto the sheet conveying means 23. When the sensor 36a detects the leading edge of the second sheet P, the rotational peripheral speed of the drive motor 33 is reduced and the sheet conveying speed of the sheet conveying means 23 is reduced to the initial speed. The second sheet P is conveyed by the decelerated sheet conveying means 23 while maintaining a predetermined distance from the first sheet P, and is discharged to the area B on the sheet discharge tray 24. When the paper P is discharged to the area B, the drive motor 72 is operated based on a command from the control means 84 and air is blown out from the blower means 25 toward the paper P. Fall into

  When the printing operation is completed, the printing operation is subsequently performed. The operator depresses the numeric keypad 89 to set the number of prints on the display device 90, and depresses the deceleration key 93a or the acceleration key 93b to set the printing speed. When the print start key 87 is pressed by the operator after the number of prints and the print speed are set, the plate cylinder 9 is driven to rotate at a rotational peripheral speed corresponding to the set print speed and the paper is fed from the paper supply unit 4. P is continuously fed two by two, and the printing operation is performed in the same manner as in the printing. When the set number of prints is consumed, the operation of each part of the stencil printing apparatus 1 is stopped, and the stencil printing apparatus 1 again enters a print standby state.

  With the above-described configuration, in the first printing mode, the two sheets of paper P that are continuously fed are discharged to the discharge tray 24 satisfactorily while suppressing the occurrence of jamming, thereby greatly improving printing efficiency. In addition, in the second printing mode, sorting by the number of copies is possible, and in the third printing mode, sorting by image is possible, so that the stencil printing apparatus 1 that is easy to use can be provided.

  In the first printing mode, when the paper P on the paper discharge tray 24 reaches a predetermined amount, the end fence 54 is moved to the upstream side in the paper transport direction, and the paper P stacked therewith is also moved. A new stacking area may be formed between the end fences 54 and 55. In this case, similarly to the discharge to the area A in the second print mode, the discharge conveyance means 23 is positioned at the third position. As a result, the amount of paper discharged to the paper discharge tray 24 can be doubled, and work efficiency can be improved by continuously performing a large number of printing operations.

  17, FIG. 18, and FIG. 19 show the paper discharge conveying means used in the second embodiment of the present invention. Compared with the paper discharge transport means 23 shown in the first embodiment, the paper discharge transport means 94 is a pair of jump plates 95 functioning as a guide plate instead of the jump plate 30 and a pair of jumps functioning as a guide plate. The difference is only in the point having the plate 96 and the point having the guide plate angle changing means 97, and the other configurations are the same. In the second embodiment, the discharge angle changing means 37 is not provided, and the paper discharge transport means 94 is fixed at a second position in the paper discharge transport means 23.

  As shown in FIG. 19, one end of each jump plate 96 is swingably supported on the upstream side in the sheet conveying direction of the conveying means body 31 by a support shaft 98, and the other end is supported as shown by a solid line in FIG. The first position protruding on the endless belt 28 and the second position where the other end is positioned below the endless belt 28 as indicated by a two-dot chain line in FIG. Although not shown, each jump plate 95 is also supported at its one end by a support shaft 98 so as to be swingable, and the other end side is a first position and a second position below the first position. Selectively occupy.

  A support shaft 99 that is rotatably supported by the transport means body 31 is disposed inside the transport means body 31 and in the vicinity of the support shaft 98. A timing pulley 100 is attached to one end of the support shaft 99, and an eccentric cam 101 that contacts the jump plates 95, 96 is attached to a position corresponding to each jump plate 95, 96 of the support shaft 99. Yes. In the vicinity of the timing pulley 100, a stepping motor 102 having a timing pulley 102a on the output shaft is disposed. The stepping motor 102 is attached to the conveying means main body 31, and a timing belt 103 is stretched between the timing pulleys 100 and 102a.

  With the above-described configuration, the stepping motor 102 operates and the eccentric cams 101 are moved to the positions indicated by the solid lines in FIG. 19, whereby the jump plates 95 and 96 occupy the first positions, respectively. Each jump plate 95, 96 occupies the second position by being moved to the position indicated by the two-dot chain line in FIG. These support shaft 99, timing pulley 100, each eccentric cam 101, stepping motor 102, timing pulley 102a, and timing belt 103 constitute a guide plate angle changing means 97.

  Based on the above-described configuration, the operation of the stencil printing apparatus 1 in the second embodiment will be described below. Similar to the first embodiment, prior to printing, the operator sets the print mode to any one of first to third by the print mode switching means 92.

  After the printing mode is set, when the plate making start key 86 is pressed after the original is set in the image reading unit 6 and the paper P is set on the paper feed tray 15, the plate discharging operation is performed as in the first embodiment. The document reading operation and the plate making operation are continuously performed, and the plate making operation is performed after the winding operation is completed. After the printing operation is completed, the printing operation is performed by pressing the print start key after the printing number and the printing speed are set. When the set number of printings is consumed, the operation of each unit of the stencil printing apparatus 1 is performed. The stencil printing apparatus 1 is put into a print standby state again.

  In the first embodiment, during the operation during printing and printing described above, the discharge angle changing means 37 is replaced with the paper discharge conveying means 23 swinging to the first position or the third position. In the embodiment, the guide plate angle changing means 97 swings each jump plate 95, 96 to the second position or the first position. That is, when the paper P is discharged to the area A formed on the paper discharge tray 24, the guide plates 95 and 96 are positioned at the second position as shown in FIG. When discharging, the guide plates 95 and 96 are positioned at the first position as shown in FIG. When the paper P is discharged to the area B, air may be blown from the blower means 25. Also with this configuration, the same effects as those of the first embodiment can be obtained.

  As a modified example of each of the above-described embodiments, an apparatus including both a discharge angle changing unit and a guide plate angle changing unit may be used as a discharge conveyance unit. In this case, when the paper P is discharged to the area A, the paper discharge conveying means is positioned at the third position by the discharge angle changing means, and when the paper P is discharged to the area B, the paper is discharged by the discharge angle changing means. The conveying means is positioned at the first position. The guide plate angle changing means is positioned according to the characteristics (for example, type, size, thickness, etc.) of the paper P to be used, and is adjusted so that the paper P can be easily discharged to the designated area. With this configuration, fine control can be performed according to the characteristics of the paper P, and operability can be further improved.

1 is a schematic front view of a stencil printing apparatus to which a first embodiment of the present invention is applied. It is a top view of the paper discharge conveyance means used for the 1st Embodiment of the present invention. It is the schematic explaining the discharge angle change means used for the 1st Embodiment of this invention. It is the schematic of the division | segmentation pre-printing master used for the 1st and 2nd embodiment of this invention. It is a top view of the paper discharge tray used in the first and second embodiments of the present invention. It is the schematic explaining the internal structure of the paper discharge tray used for the 1st and 2nd embodiment of this invention. It is the schematic of the ventilation drive mechanism used for the 1st and 2nd embodiment of this invention. It is a schematic perspective view of the ventilation member used for the 1st and 2nd embodiment of this invention. It is the schematic of the operation panel used for the 1st and 2nd embodiment of this invention. It is a block diagram of the control means used for the 1st Embodiment of this invention. FIG. 10 is a schematic diagram for explaining a discharge state of a sheet onto a discharge tray in a second printing mode according to the first and second embodiments of the present invention. FIG. 10 is a schematic diagram for explaining a discharge state of a sheet onto a discharge tray in a second printing mode according to the first and second embodiments of the present invention. FIG. 10 is a schematic diagram for explaining a discharge state of a sheet onto a discharge tray in a third printing mode in the first and second embodiments of the present invention. It is the schematic for demonstrating the paper discharge area | region formed on the paper discharge tray in the 1st and 2nd embodiment of this invention. FIG. 5 is a schematic diagram for explaining a position of a paper discharge transport unit when a paper is discharged to a region A in the first embodiment of the present invention. FIG. 5 is a schematic diagram for explaining the position of a paper discharge transport unit when a paper is discharged to a region B in the first embodiment of the present invention. It is a top view of the paper discharge conveyance means used for the 2nd Embodiment of this invention. It is a side view of the paper discharge conveyance means used for the 2nd Embodiment of this invention. It is a front view of the paper discharge conveyance means and guide plate angle change means used for the 2nd Embodiment of this invention. It is the schematic for demonstrating the position of each jump board at the time of discharge | emission of the paper to the area | region A in the 2nd Embodiment of this invention. It is the schematic for demonstrating the position of each jump board at the time of discharge | emission of the paper to the area | region B in the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stencil printing apparatus 2 Printing part 4 Paper feed part 7 Paper discharge part 9 Plate cylinder 10 Press member (press roller)
15a, 15b Paper size detection means (sensor)
23, 94 Paper discharge transport means 24 Paper discharge tray 25 External force applying means (blower means)
37 Discharge angle changing means 51 Divided master-making master 51a First plate-making image 51b Second plate-making image 54, 55 End fence 84 Conveyance speed control means (control means)
89 Setting means (numeric keypad)
91 Setting means (display device comprising LCD)
95,96 Guide plate (jump plate)
97 Guide plate angle changing means 104 First and second end fence moving means A A downstream area in the paper transport direction B B upstream area in the paper transport direction P paper

Claims (12)

A printing unit having a plate cylinder and a pressing member provided so as to be able to contact with and separate from the plate cylinder, a paper feeding unit that feeds paper toward the printing unit, and printed in the printing unit A paper discharge unit that discharges paper, a divided plate-making master having a first plate-making image and a second plate-making image is wound around the plate cylinder, and the paper feed unit is rotated during one rotation of the plate cylinder. Stencil printing in which two sheets are continuously fed, and each fed sheet is pressed against the corresponding plate-making image by the pressing member, and printing is performed on two sheets per one rotation of the plate cylinder. In the device
The paper discharge unit includes a paper discharge transport unit that transports the printed paper, and a paper discharge tray on which the printed paper transported by the paper discharge transport unit is stacked. A stencil printing apparatus, wherein an area for stacking used sheets is divided into a first area and a second area. In the stencil printing apparatus according to claim 1,
The paper discharge tray has first and second end fences with which the front end of the printed paper abuts, and the end fences move the printed paper stacking area on the paper discharge tray to the upstream side in the paper conveyance direction. 2. A stencil printing apparatus, characterized in that it is divided into an area and a downstream area in the paper transport direction. In the stencil printing apparatus according to claim 2,
The paper feeding unit includes a paper size detecting unit that detects the size of the paper, and each of the end fences is moved in the paper transport direction according to the size of the paper detected by the paper size detecting unit. And a second end fence moving means. In the stencil printing apparatus according to claim 2 or 3,
Conveyance speed control means for controlling the paper conveyance speed of the paper discharge conveyance member, and the conveyance speed control means compared to the case where the printed paper is stacked in the upstream area in the paper conveyance direction. The stencil printing apparatus is characterized in that the paper transport speed is increased when the paper is stacked in the downstream area in the paper transport direction. In the stencil printing apparatus according to claim 4,
The transport speed control means sets the paper transport speed to the same speed as the print speed when the printed paper is stacked in the upstream area in the paper transport direction, and sets the printed paper in the downstream area in the paper transport direction. In the case of stacking, the stencil printing apparatus is characterized in that the paper conveyance speed is 1.5 times or more the printing speed. In the stencil printing apparatus according to any one of claims 2 to 5,
The paper discharge unit includes a discharge angle changing unit that changes a discharge angle of the printed paper with respect to the paper discharge tray of the paper discharge conveying member, and the discharge angle changing unit moves the printed paper upstream in the paper conveyance direction. The stencil printing apparatus, wherein the discharge angle is changed depending on whether the sheet is stacked on the side area or on the downstream area in the sheet conveying direction. In the stencil printing apparatus according to any one of claims 2 to 5,
The paper discharge conveying member includes a guide plate capable of changing the discharge angle of the printed paper with respect to the paper discharge tray, and a guide plate angle changing means for changing the angle of the guide plate, and the guide The stencil printing is characterized in that the plate angle changing means changes the angle of the guide plate between when the printed paper is stacked in the upstream area in the paper transport direction and when the paper is stacked in the downstream area in the paper transport direction. apparatus. In the stencil printing apparatus according to any one of claims 2 to 7,
When the printed paper is stacked in the upstream area in the paper conveyance direction, an external force in the direction of the paper toward the upstream area in the paper conveyance direction with respect to the printed paper discharged from the paper discharge conveyance member A stencil printing apparatus comprising an external force applying means for applying a stencil. The stencil printing apparatus according to claim 8,
The stencil printing apparatus, wherein the external force is an air flow, and the external force applying means is a blowing means. In the stencil printing apparatus according to any one of claims 1 to 9,
When the first plate-making image and the second plate-making image are different from each other, the first paper pressed by the first plate-making image and the second paper pressed by the second plate-making image are different from each other. A stencil printing apparatus, wherein the stencil printing apparatus is loaded in the loading area. In the stencil printing apparatus according to any one of claims 1 to 9,
When the first plate-making image and the second plate-making image are different from each other, whichever of the first paper pressed by the first plate-making image and the second paper pressed by the second plate-making image is used A stencil printing apparatus comprising setting means for individually setting whether to load in the stacking area. In the stencil printing apparatus according to any one of claims 1 to 9,
When the first plate-making image and the second plate-making image are the same image, whichever of the first sheet pressed by the first plate-making image and the second sheet pressed by the second plate-making image is used A stencil printing apparatus comprising setting means for individually setting whether to load in the stacking area.

Images