JP2011115997A - Ejected plate control device and stencil printing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent incorrect detection by a detection means to detect whether the plate ejection box which is attachable to and detachable from a stencil printing device body is positioned correctly or not to the predetermined location of the stencil printing device body. <P>SOLUTION: This ejected plate control device 1 includes: a plate ejection box which is detachably mounted at the predetermined location of the stencil printing device body and stores the ejected plate and can discard the stored ejected plate from an outlet 21 prepared on one side surface; a compression means 40 which is attached on the stencil printing device body and compresses the ejected plate brought into the plate ejection box and then contains them in the plate ejection box; and a detection means 50 which detects whether the plate ejection box is correctly mounted or not on the predetermined location of the stencil printing device body by detecting the position of a side face with the outlet 21 of the plate ejection box. In a compression period during when the compression means 40 compresses the ejected plate, the detection means 50 does not detect whether the plate ejection box is not positioned in the predetermined location. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a stencil printing apparatus and a stencil printing apparatus provided in a stencil printing apparatus for printing on a sheet by mounting a prepressed printing plate (stencil base paper) on a printing means, and more specifically, removing from the printing means. The present invention relates to a stencil printing apparatus and a stencil printing apparatus that stores a used printing plate (discharged plate) that has been carried in from a stencil printing apparatus main body after being compressed by a compressing means provided in the stencil printing apparatus main body.

  In recent years, in a stencil printing apparatus that prints on paper, the stencil printing plate (a printing plate that has become unnecessary after printing) is compressed and stored in a stencil box that is detachably attached to the stencil printing machine body. In many cases, the plate is removed from the discharge box provided at the discharge port provided in the discharge box when the plate is accumulated to some extent. The discharge port of the discharge plate box is generally a horizontal discard type in which an opening serving as an inlet through which the discharge plate is carried into the discharge plate box is also used for discharging. However, as shown in Patent Document 1, in recent years, the discharge plate is compressed. There has been proposed a vertical discard type discharge box capable of discarding a discharged plate from a discharge port provided on the side of the direction.

  In such a stencil printing apparatus, it is generally performed to detect whether the stencil box is properly attached to a predetermined position of the stencil printing apparatus main body. When the compression means provided in the main body compresses the discharged plate in the discharged plate box, if the discharged plate box is not properly attached, the position of the discharged plate box is shifted from the predetermined position of the main body due to the influence of the discharged plate compression force. This is because inconveniences such as these may occur.

  Further, conventionally, as a detection means for detecting whether or not such a stencil box is attached at a predetermined position, for example, a detected portion provided at a specific position of the stencil box is provided in the stencil printing apparatus main body. Relative position detecting means for detecting the relative positional relationship between the stencil printing apparatus main body and the stencil box, which is detected by a detection unit, is used.

JP2009-23253

  In the conventional side-discard type plate-release box, the stencil printing machine main body can support the compression force acting on the plate-release box through both side walls of the plate-release box. There was almost no risk that the box would be displaced relative to the stencil printing machine body. However, in the case of a vertical discard type discharge box, one of the side portions of the discharge box is wide open to provide a discharge port, so the side of the side portion where the discharge port is provided is compressed through the side wall. The force cannot be supported, and the side surface portion on the side where the discharge port of the discharge box is provided may be displaced relative to the stencil printing apparatus main body due to the compression force when the discharge plate is compressed.

  In this way, when the side surface portion on the side where the discharge port of the stencil box is provided is relatively displaced with respect to the stencil printing apparatus main body, the above-mentioned relative position detecting means determines the relative position of the side surface portion on the side where the evacuation box is provided with the discharge port. If it is provided to detect, inconvenience may occur. That is, even though the stencil box itself is properly attached to a predetermined position with respect to the stencil printing apparatus, the detection unit detects the displacement of the stencil box due to the stencil compression force during stencil compression, and the stencil box is stipulated. There may be a problem that it is determined that it is not attached to the position and an alarm is output or the discharge plate compression operation is stopped.

  For example, as shown in FIG. 7A, a hook-shaped locking portion 30 provided on the right side surface 24 of the plate discharging box 2 is hung on a locking shaft 31 provided on the main body of the stencil printing apparatus, so that the plate discharging box 2 is stenciled. In the plate discharging control device supported by the printing apparatus main body, whether or not the locking unit 30 is hooked on the locking shaft 31 by the detection unit 52 for detecting the detected part 51, that is, the plate discharging box 2 is in relation to the stencil printing apparatus main body. A case will be described as a specific example where it is detected whether or not it is located at a predetermined position (position of the plate removal box when the locking portion 30 is properly hooked on the locking shaft 31).

  In the apparatus shown in FIG. 7A, when the locking part 30 is properly hooked on the locking shaft 31, the detection part 52 and the detected part 51 are arranged so that the detection part 52 detects the detected part 51. Yes. However, as shown in FIG. 7B, during the plate discharging compression operation, the compression plate moves in the direction of the arrow, and the compression force acts on the plate discharging box 2. In the plate discharging box 2, the engaging portion 30 is attached to the side surface of the plate discharging box 2 main body by a shaft 30a provided at the hook-shaped base portion. Acts on direction.

  However, since the hook-shaped tip portion 30b of the locking portion 30 is locked to the locking shaft 31 provided on the stencil printing apparatus main body side, the hook locked to the locking shaft 31 is attached to the locking portion 30. A tensile force due to the discharged plate compression force acts between the shape tip portion and the shaft 30a. As a result, the locking portion 30 is stretched, and further, due to distortion of the main body of the plate ejection box 2 and a minute position shift of the plate ejection box 2, the detected portion 51 is operated in the direction of action of the plate ejection compression force ( There may be a case where the detection unit 52 moves to a position where the detection unit 51 cannot be detected (rightward in the figure). In other words, the detection unit 52 cannot detect the detected portion 51 even though the locking portion 30 is properly hooked on the locking shaft 31, and erroneous detection occurs.

  In the present invention, in view of the above circumstances, the detected portion is moved from a predetermined position at the time of discharging plate compression even though the discharging plate box is properly attached, and the discharging box is not properly attached to the main body. An object of the present invention is to provide a stencil printing apparatus and a stencil printing apparatus that can prevent a detection unit from making an erroneous determination.

  The stencil discharge control device according to the present invention is detachably attached to a predetermined position of the stencil printing apparatus main body, stores the stencil transported from the stencil printing apparatus main body, and stores the stencil from the discharge port provided on one side surface portion. A plate discharge box capable of discarding the plate release, a compression unit attached to the stencil printing apparatus main body, compressing the plate discharged into the plate release box and storing it in the plate release box, and the discharge port of the plate release box A plate discharging control device comprising: a detecting means for detecting whether or not the plate discharging box is positioned at the predetermined position of the stencil printing apparatus main body by detecting the position of the side surface portion provided with During the compression period in which the discharged discharged plate is compressed by the compression unit, the detection unit does not detect that the discharged box is not located at the predetermined position. It is an feature.

  The stencil printing apparatus according to the present invention is detachably attached to a predetermined position of the stencil printing apparatus main body, stores the discharged plate carried from the stencil printing apparatus main body, and stores the stencil printing apparatus from the discharge port provided on one side surface portion. A plate discharging box capable of discarding the discharged plate, compression means attached to the stencil printing apparatus main body, compressing the discharged plate carried into the plate discharging box and storing it in the plate discharging box, and the discharging of the plate discharging box. Detecting a position of a side surface portion provided with an outlet, thereby detecting whether or not the stencil box is located at the predetermined position of the stencil printing apparatus main body, and the detecting means includes the carry-in In the compression period in which the discharged plate is compressed by the compression means, it is not detected that the discharged box is not located at the predetermined position. Than is.

  Here, the “side surface portion” in the present invention refers to the side surface portion of the stencil box when the stencil box is viewed from the stencil compression direction, and “position detection” refers to the stencil printing apparatus main body of the stencil printing apparatus in the stencil printing apparatus body. The position is detected. This detection may be performed by directly detecting the position of the side surface portion of the discharging box or indirectly using an index or the like that can detect the position of the side surface portion of the discharging box. In addition, if detection by the detection means is performed during the compression period, there is a risk of erroneous detection due to displacement of the discharge box caused by the discharge compression force. Therefore, “the discharge box by the detection means is positioned at a predetermined position during the compression period. The period during which the detection unit does not detect that the discharge box is not located at the predetermined position does not need to cover the entire compression period. May be a partial compression period, or may be a partial period in one compression period.

  Further, the detection means according to the present invention detects a position of the detected portion attached to either the side surface portion of the discharge box with the discharge port or the stencil printing apparatus main body, and the position of the detected portion. And a detection unit attached to the other side of the stencil printing apparatus main body with the discharge port, and detecting the relative position of the detected part with respect to the detection unit by the detection unit, It may be one that detects whether or not the box is located at the predetermined position of the stencil printing apparatus main body.

  Further, in the present invention, only when the number of discharged plates carried in is greater than or equal to a predetermined number, during the compression period, the detection means does not detect that the discharge control device is not located at the predetermined position. Also good.

  According to the stencil printing control apparatus and the stencil printing apparatus of the present invention, the stencil printing apparatus main body is detachably attached to a predetermined position, accommodates the stencil transported from the stencil printing apparatus main body, and is disposed on one side surface portion. A plate discharging box that can discard the discharged plate stored from the outlet, a compression unit that is attached to the stencil printing apparatus main body, compresses the discharged plate carried into the discharged plate box, and stores it in the discharged plate box, and a discharge port of the discharged plate box. A detection period for detecting whether or not the plate discharge box is located at a predetermined position of the stencil printing apparatus main body by detecting the position of the side portion provided, and a compression period in which the discharged plate is compressed by the compression unit Since the detection means does not detect that the discharge box is not located at a predetermined position, the discharge box is caused by the displacement of the discharge box due to the discharge compression force. It can be prevented from being judged erroneously as detector is not properly attached to the body.

  When the plate ejection control device and the stencil printing device of the present invention do not detect that the plate ejection box is not located at a predetermined position during the compression period only when the number of carried-in plate ejections is a predetermined number or more. By setting the predetermined number of sheets so that the plate discharging compression force is large enough to contribute to the displacement of the plate discharging box, the time during which it is not detected that the plate discharging box is not positioned at a predetermined position is made longer than necessary. Therefore, it is possible to prevent the detection unit from erroneously determining that the discharge box is not properly attached to the main body.

1 is an overall perspective view of a stencil printing apparatus main body to which a stencil box according to an embodiment of the present invention is mounted (a state in which the stencil box is attached). 1 is an overall perspective view of a main body of a stencil printing apparatus to which a discharge box according to an embodiment of the present invention is mounted (a state where the discharge box is removed). Side view of the plate removal control device according to the present embodiment Overall perspective view of a waste box according to this embodiment The top view (at the time of non-compression) of the discharged-plate control apparatus by embodiment of this invention 4B-4B sectional view of FIG. 4A (when not compressed) The top view (at the time of compression) of the discharged-plate control apparatus by embodiment of this invention 5B-5B sectional view of FIG. 5A (when compressed) Schematic of locking means according to an embodiment of the present invention (properly locked state) Schematic of locking means according to an embodiment of the present invention (state not properly locked) Schematic of locking means according to an embodiment of the present invention (state not properly locked) Schematic of detection means according to an embodiment of the present invention (a state where a detection unit detects a detected portion) Schematic diagram of detection means according to an embodiment of the present invention (a state where the detection unit does not detect the detected portion) The schematic perspective view of the detection part by embodiment of this invention Control flow chart of detection means according to an embodiment of the present invention

  Hereinafter, embodiments of the stencil printing apparatus of the present invention will be described in detail with reference to the drawings.

  1A and 1B are overall perspective views of a stencil printing apparatus to which a plate discharging box according to an embodiment of the present invention is mounted. FIG. 1A shows a state in which the plate discharging box is mounted, and FIG. 1B shows a state in which the plate discharging box is removed. Each is shown.

  Although the detailed internal structure is not shown, the stencil printing apparatus 100 shown in FIGS. 1A and 1B includes a reading unit that reads a document as image information, and plate making that punches an image on a stencil sheet based on image information acquired by the reading unit. A printing unit that prints printing paper using a stencil sheet that has been stenciled, that is, a printing plate, a paper feeding unit that transports printing paper stacked on the paper feed tray 3 to the printing unit, and printing by the printing unit A paper discharge unit that discharges the printed printing paper and stacks it on the paper discharge tray 4; a plate discharge control device 1 that peels the used printing plate from the printing unit, sends it to the plate discharge box 2 and compresses and stores it; The operation panel 5 allows the operator to select a printing method and the like, and a control unit that controls the above-described units.

  A stencil printing apparatus 100 shown in FIGS. 1A and 1B is a stencil printing apparatus capable of duplex printing, and includes a first printing unit that prints the surface and a first stencil printing control device that discards the used printing plate. , A second printing unit for printing the back surface and a second plate removal control device for discarding the used printing plate. In FIG. 1A, the plate removal box of the first plate removal control device is a housing of the stencil printing device 100. The left side surface, the plate ejection box 2 of the second plate ejection control device, is detachably attached to the right side surface of the casing. In the present embodiment, the configuration of only the second plate ejection control device will be described, but the first plate ejection control device is configured in the same manner.

  FIG. 2 is a right side view of the plate removal control apparatus 1 according to the embodiment of the present invention. FIG. 3 is a perspective view of the plate removal box 2 in a removed state. As shown in FIGS. 2 and 3, the plate discharge control device 1 according to the embodiment of the present invention stores the plate discharge M carried from the main body of the stencil printing apparatus 100 in the storage space, and the right side surface portion 36 which is one side surface portion. The plate-discarding box 2 that can be discarded outside (before drawing) and the plate-discarding box 2 attached to the main body of the stencil printing apparatus 100 and carried into the plate-discarding box 2 By detecting the position of the compressing means 40 for compressing M and storing it in the stencil box 2, and the position of the side surface portion 36 provided with the discharge port 21 of the stencil box 2, the stencil box is positioned at a predetermined position of the stencil printing apparatus main body. A detecting hand comprising a light shielding plate 51 (detected portion) provided in the discharge box 2 and an optical sensor portion 52 (detecting portion) provided in the main body of the stencil printing apparatus 100 for detecting whether or not It is equipped with a 50. 2 shows a state in which the compression plate 42 provided in the compression means 40 is moved to a position where it can be easily seen from the horizontal state described later.

  The storage area for storing the discharged plate of the discharged plate box 2 has a curved bottom plate portion 22b having a curved shape corresponding to an operation locus (rotation locus about the drive shaft 41) in which the compression plate 42 of the compression means 40 compresses the discharged plate. And a bottom plate 22 composed of a flat plate bottom plate portion 22a on a substantially flat plate, and a rear plate 26 provided so as to be opposed to the compression direction (the direction of arrow P in FIG. 2) (on the side where the compressed discharged plate is stored) A space defined by an asymmetric right side plate and a left side plate (not shown) provided in parallel with the compression direction. Both side plates and the rear plate 26 are erected vertically on the bottom plate 22. The compression direction is the direction in which the discharged plate is compressed at the final compression operation position during one discharged plate compression operation of the compression plate 42, and is the direction from left to right in FIG. The compression direction is substantially the same as the direction in which the plate discharge box 2 is attached to and detached from the stencil printing apparatus 100 main body.

  On the outer surface of the rear plate 26, the plate release box 2 is provided with a gripping portion 27 that serves as a handle for supporting the plate release box 2 when the plate release box 2 is attached or detached. The main body of the stencil printing apparatus 100 is provided with a locking shaft 31 for attaching the discharge box 2 to the main body, and the discharging box 2 is provided with a locking portion 30 so as to be locked to the locking shaft 31. Yes. The locking portion 30 and the locking shaft 31 constitute locking means 29. Regardless of the present embodiment, the locking means 29 is not particularly limited as long as it attaches a discharge box to the stencil printing apparatus main body.

  The locking portion 30 is fixed to a shaft 30 a that is rotatably supported by the right side plate 24 at a position behind the rear plate 26 and adjacent to the right side plate 24. The shaft 30a is urged to rotate counterclockwise in FIG. 2 by a spring (not shown), and when the locking portion 30 is in a free state, the locking portion 30 almost stops at the position shown in FIG. The rotation of the shaft 30a by the spring is restricted. The shaft 30a is linked to the above-described detachable lever 28. When the detachable lever 28 is depressed, the shaft 30a rotates clockwise, and the locking portion 30 rotates upward about the shaft 30a to lock the locking shaft 31. It is configured to deviate from.

  The plate discharging box 2 according to the present embodiment includes an upper opening 37 through which the compression plate 42 of the compression means 40 attached to the main body enters the plate discharging box 2. Further, a cover member 33 which is a plate that substantially covers the upper second half of the storage area of the plate-discharging box 2 is provided above the rear plate 26, and is provided so as to be rotatable to approximately the same width as the plate-discharging box 2. An operation lever 32 for lifting the cover member 33 is provided so that the discharged plate can be easily taken out from the discharge port 21 provided on the right side surface portion 36 of the first plate. Specifically, when the stencil box 2 is removed from the stencil printing apparatus main body and the operation lever 32 is pushed downward in the drawing, the cover member 33 provided on the opposite side across the operation lever and the rotation shaft is lifted. With the cover member 33 lifted, the discharged plate box 2 is tilted to the discharge port 21 side (arrow side) so that the discharged plate is discharged from the discharge port 21 to the outside of the discharged plate box 2 by its own weight. The

  In addition, a locking mechanism is provided at one end of the upper surface of the detachable lever 28. The lock mechanism includes a slide lever 34 that allows a lock member (not shown) to protrude and retract between the grip portion 27 and the detachable lever 28. When the slide lever 34 is slid to the lock side, a lock member (not shown) protrudes between the grip portion 27 and the detachable lever 28 and the detachable lever 28 collides with the lock member even when the detachable lever 28 is pushed to the grip portion 27 side. Therefore, the detachable lever 28 cannot be pushed down toward the grip portion 27. If the detachable lever 28 is not pushed down as described above, the locking portion 30 cannot be removed from the locking shaft 31, so the stencil box 2 is locked by the locking member so that it cannot be removed from the stencil printing apparatus 100. On the other hand, when removing the stencil box 2 from the main body of the stencil printing apparatus 100, the slide lever 34 is first slid to the non-lock side to bring the lock member into the detachable lever 28, and then the detachable lever 28 is pushed downward. By removing the locking portion 30 from the locking shaft 31, it can be removed.

  In addition, since the component of the same name in each figure is substantially the same about the function, detailed description is abbreviate | omitted about the same part (in the following embodiment similarly).

  4A is a plan view of the plate ejection control apparatus 1 (when not compressed) according to the embodiment of the present invention, and FIG. 4B is a cross-sectional view taken along the line 4B-4B of FIG. 4A. FIG. 5A is a plan view of the plate ejection control apparatus 1 (during compression) according to the embodiment of the present invention, and FIG. 5B is a cross-sectional view taken along line 5B-5B of FIG. 5A. As shown in FIG. 4B, the plate discharging control device 1 includes two conveying rollers and one pressing roller that hang a conveying belt at a position on the main body side of the stencil printing device 100 corresponding to the front end portion of the discharging box 2. Is further provided. The conveying means 23 has a function of feeding the discharged plate M peeled off from a printing unit (not shown) between the conveying belt and the pressing roller and feeding it to the discharged plate box 2.

  As shown in FIGS. 4A and 4B, the compression means 40 includes a horizontal drive shaft 41 orthogonal to the conveying direction (feeding direction) of the discharged plate and a compression plate 42 attached to the drive shaft 41, and rotates the drive shaft 41. The compression plate 42 is configured to be rotatable by being moved. The compression plate 42 is composed of a plate-like portion and a plurality of arms arranged at appropriate intervals on the plate-like portion. The compression plate 42 moves from the horizontal state (non-compressed state) in which the arm is directed leftward from the drive shaft 41 outside the plate discharging box 2 shown in FIGS. 4A and 4B, as shown in FIGS. 5A and 5B. By turning the angle of about 90 degrees into the vertical state (compressed state) with the arm facing downward while entering the inside, while sending the discharged plate M in the substantially same direction as the discharged plate M is sent in the discharged plate box 2 Compress. Here, the rear plate 26 receives the discharged plate M compressed at a position facing the compression direction (arrow P direction) of the compression means inside the discharged plate box 2 and functions to compress the discharged plate M. After compression, the compression plate 42 rotates clockwise and returns to the standby position shown in FIGS. 4A and 4B. In this manner, the storage and compression of the discharged plate M are repeated until the discharged plate M stored in the discharged plate box 2 reaches a predetermined number. When the number of the discharged plates M reaches a predetermined number, it is detected by a detecting means (not shown) that the discharged plate M has reached the predetermined number, a warning is displayed on the operation panel 5 of the stencil printing apparatus 100, and the user discards the discharged plate M. Prompt.

  6A, 6B, and 6C are schematic views of the locking means 29 according to the embodiment of the present invention. FIG. 6A shows a properly locked state, and FIGS. 6B and 6C show a properly locked state. ing. 7A and 7B are schematic views of the side surface of the detecting means 50 according to the embodiment of the present invention. FIG. 7A shows a state in which the detected portion 51 is detected by the detecting portion 52, and FIG. The state which is not detected by 52 is shown. FIG. 8 is a perspective view of a detection unit according to an embodiment of the present invention.

  As shown in FIGS. 3, 7A, and 7B, the detection means 50 according to the present embodiment has a compression direction (arrow P) on the right side plate 24 of the right side surface portion 36 provided with the discharge port 21 of the discharge box 2. A light-shielding plate 51 (detected portion) attached in parallel to the direction) and a photosensor portion 52 (detection portion) attached to the main body of the stencil printing apparatus 100 for detecting the position (presence / absence) of the light-shielding plate 51. Then, by detecting the position of the light shielding plate 51 by the optical sensor unit 52, it is detected whether or not the plate ejection box 2 is located at a predetermined mounting position of the main body of the stencil printing apparatus 100.

  As shown in FIG. 8, the optical sensor unit 52 of this embodiment includes a light source 52a that emits inspection light in the direction of arrow L and an optical sensor 52b that detects the inspection light. When the light shielding plate 51 blocks the inspection light from the light source 52a and the optical sensor 52b cannot receive the light, the optical sensor 52b can receive the inspection light from the light source 52a when the optical sensor 52 detects the light shielding plate 51. Is equivalent to a state in which the light sensor unit 52 cannot detect the light shielding plate 51. In the present embodiment, a control unit (not shown) provided in the stencil printing apparatus 100 serves as a function for controlling other parts of the stencil printing apparatus and a photosensor control unit for controlling the photosensor unit 52. The optical sensor 52 is configured such that when the stencil box 2 is attached to the main body of the stencil printing apparatus 100, the stencil box 2 is attached to and detached from the inner wall surface of the main body of the stencil printing apparatus 100 corresponding to the right side plate 24 of the stencil printing box 2. It is attached so that the position in the direction to be adjusted with a screw or the like. An arrow E in FIG. 8 indicates the insertion direction of the light shielding plate 51 when the plate discharging box 2 is attached to the main body of the stencil printing apparatus 100.

  As shown in FIG. 6A, the optical sensor 52 is in a state in which the locking portion 30 provided on the right side surface portion 36 of the plate discharging box is in a state where the hook-shaped tip portion 30b of the locking portion 30 is hooked on the locking shaft 31. When the box 2 is in a predetermined position (position of the plate removal box when the locking portion 30 is properly hooked on the locking shaft 31), the light shielding plate 51 blocks the inspection light, as shown in FIGS. 6B and 6C. When the hook-shaped tip portion 30b of the locking portion 30 is not sufficiently locked to the locking shaft 31, that is, when the discharge box 2 is not in a predetermined position, the light shielding plate 51 does not block the inspection light. The position is adjusted in millimeters.

  The detection of the relative position of the side surface portion 36 with respect to the main body of the stencil printing apparatus 100 may directly detect the position of the side surface portion 36 as in the present embodiment. You may detect the position of a side part indirectly using the parameter | index etc. which show a position indirectly. However, when the detection means 50 is disposed in the vicinity of the locking means 29 that locks the stencil box 2 to the main body of the stencil printing apparatus 100 as in this embodiment, the stencil box 2 and the stencil printing apparatus 100 are disposed. The attachment / detachment to / from the main body can be detected more accurately and quickly, which is preferable.

  Further, the detecting means 50 determines whether or not the position of the side surface portion 36 provided with the discharge port 21 of the vertical discard type plate ejection box 2 is at a predetermined position of the main body of the stencil printing device 100. The detected portion may be provided in the main body of the stencil printing apparatus 100, and the detection portion may be attached to the side surface portion 36 of the stencil box. Furthermore, not only an optical sensor but various sensors can be used. As in the present embodiment, when the light shielding plate 51 is provided in the plate removal box 2 and the optical sensor unit 52 is provided in the main body of the stencil printing apparatus 100, an optical sensor that requires wiring and a power source and requires a certain location. The part 52 is provided in the main body of the stencil printing apparatus 100, and the plate removing box 2 side is provided with a light shielding plate 51 which is smaller than the optical sensor part 52 and does not require a power source or the like. A certain discharge box 2 can be made light and simple, which is preferable.

  The accurate detection of the locking state between the main body of the stencil printing apparatus 100 and the plate ejection box 2 by the above-described detection means 50 is particularly important in the vertical discard type plate ejection control device as described in the background. In the present embodiment, the detection means 50 is controlled in view of the following circumstances, particularly in the right side surface portion 36 provided with the discharge port 21.

  That is, in the plate removal control apparatus 1 according to the present embodiment, as shown in FIG. 7B, during the plate removal compression operation, the compression plate 42 moves in the direction of the arrow P, and the compression force acts on the plate removal box 2. At this time, on the left side of the plate removal box 2, the drive shaft 41 is engaged with a recess formed on the upper edge of the left side plate 25 (not shown). For this reason, the compression force by the compression plate 42 can be received by the drive shaft 41 via the left side plate 25.

  However, since the large discharge port 21 is provided on the right side surface portion 36, the right side plate 24 does not have a portion that engages with the drive shaft 41. For this reason, the compression force applied to the plate ejection box 2 cannot be supported by the right side surface 24, and the compression force applied to the plate ejection box 2 is all supported by the locking shaft 31 via the locking portion 30. Therefore, the right side surface portion 36 with the discharge port 21 is more affected by the extension of the locking portion 30 due to the compressive force or the distortion of the main body than the left side surface without the discharge port 21. The displacement of 31 with respect to the main body of the stencil printing apparatus 100 is likely to occur from the left side surface portion. That is, the light-shielding plate 51 attached to the right side surface portion 36 of the plate removal box 2 by the compressive force acting on the plate removal box 2 even though the lock portion 30 is properly hooked on the lock shaft 31 is provided with the optical sensor. It is likely that the part 52 is displaced rightward to a position where the light shielding plate 51 cannot be detected, and the detection means 50 erroneously determines that the plate removal box 2 is not disposed at the predetermined position. Therefore, in this embodiment, in order to prevent such erroneous determination, the detection unit 50 is controlled as follows.

  The control flow of the detection means 50 will be described with reference to FIG. FIG. 9 is a control flowchart of the detecting means 50 of the plate removal control apparatus 1 according to the embodiment of the present invention. In the present embodiment, a period during which the compression unit is operating is a compression period. First, when the power of the stencil printing apparatus 100 is turned on, the detection unit 50 starts detection (S01). Next, it is confirmed whether or not the compression operation is performed (S02). If the compression operation is not performed (N in S02), the confirmation whether or not the compression operation is performed (S02) is repeated. If the compression operation has been performed (Y in S02), the detection by the detection means 50 is stopped (S03). Next, it is confirmed whether or not the compression operation is performed (S04). If the compression operation is performed (Y in S04), it is confirmed whether or not the compression operation is performed until the compression operation is completed. (S04) is repeated. Next, if the compression operation is not performed, that is, if the compression operation is completed (N in S04), the detection by the detection means 50 is resumed (S05). The steps from S02 to S05 are repeated until the power of the stencil printing apparatus 100 is turned off. In the present embodiment, setting the optical sensor unit 52 to start / stop detection corresponds to starting / stopping detection by the optical sensor unit 52 by a control circuit or a program.

  According to the control of the detection means 50 of the present embodiment, the optical sensor unit 52 always detects the presence or absence of the light shielding plate 51 regardless of whether or not the compression operation is being performed. In the compression period in which the discharged plate is compressed by the compression plate 42, it is not detected that the discharged plate control device 1 is not positioned at a predetermined position. In spite of being attached to the stencil plate, the light-shielding plate 51 moves from a predetermined position during the stencil compression, and the detection means 50 erroneously determines that the stencil box 2 is not properly attached to the main body of the stencil printing apparatus 100. Can be prevented. As a result, since the occurrence rate of inconvenience such as interruption of printing of the stencil printing apparatus 100 due to erroneous determination is reduced, the reliability of the stencil printing apparatus 100 can be further improved.

  In this embodiment, the detection is stopped during the compression operation so that the detection that the discharge box 2 is not in the predetermined position is not performed, but only that the discharge box 2 is in the predetermined position during the compression operation. Detection may not be performed to detect that it is not in a predetermined position. As an example, even if the process of detecting the light shielding plate 51 by the optical sensor unit 52 is always performed, if the optical sensor unit 52 receives inspection light by a program during the compression period, the detection result is ignored. May function.

  Further, the period during which the detection unit 50 does not detect that the discharge box 2 is not located at the predetermined position does not have to cover all the compression periods, but is a part of the compression periods. It may also be a part of one compression period. As an example, when the compression force has a magnitude that does not affect the erroneous detection of the detection means 50 among a plurality of compression periods or one compression period, the light sensor unit 52 always detects the light shielding plate 51. The optical sensor unit 52 may not detect the light shielding plate 51 only when a large compressive force that affects erroneous detection of the detection unit 50 is applied. Here, the magnitude of the compressive force that affects the erroneous detection of the detection means 50 is determined by the type of discharged plate and the type of stencil printing apparatus. Specifically, among the plurality of compression periods, the detection of the absence of the light shielding plate 51 by the optical sensor unit 52 is not performed during the compression period only when a predetermined number or more of the discharged sheets are accumulated in the discharge box. Also good. In addition, a period during which the compressing force of a predetermined force or more is applied during a period of time during which the compression operation is performed by attaching a pressure sensor to the discharging box, etc., during which the detection means 50 does not detect the position of the discharging box 2 It is good. In this way, the period during which the detection means 50 does not detect that the plate removal box is not located at a predetermined position is more than necessary when the compression force is large enough to cause erroneous detection. Without stopping the detection of the optical sensor unit 52, it is possible to prevent the detection unit 50 from erroneously determining that the plate ejection box 2 is not properly attached to the main body of the stencil printing apparatus 100.

  In the present embodiment, the double-sided stencil printing apparatus 100 has been described. However, the applicable printing apparatus is not limited to this, and can be similarly applied to a single-color stencil printing apparatus or a multi-color stencil printing apparatus.

DESCRIPTION OF SYMBOLS 1 Discharge control apparatus 2 Discharge box 3 Sheet feed stand 4 Discharge stand 21 Discharge port 24 Right side plate 26 Rear plate 30 Locking part 31 Locking shaft 36 Side face part 40 Compression means 41 Drive shaft 42 Compression plate 50 Detection means 51 Detected Part 52 detecting part 100 stencil printing machine M discharging plate

Claims (4)

A stencil box that is detachably attached to a predetermined position of the stencil printing apparatus main body, stores the stencil transported from the stencil printing apparatus main body, and can discard the stored stencil from a discharge port provided on one side surface portion When,
Compression means attached to the stencil printing apparatus main body and compressing the discharged plate carried into the discharged plate box and storing it in the discharged plate box;
Discharge plate comprising detection means for detecting whether or not the discharge plate box is located at the predetermined position of the main body of the stencil printing apparatus by detecting the position of the side surface portion provided with the discharge port of the discharge plate box. A control device,
In the compression period in which the discharged discharged plate is compressed by the compression unit, the detection unit does not detect that the discharged box is not positioned at the predetermined position.   The detection means includes a detected portion attached to either the side surface portion of the discharge box with the discharge port or the stencil printing apparatus main body, and the discharge port for detecting the position of the detected portion. And a detection unit attached to the other side of the stencil printing apparatus main body, and the detection unit detects the relative position of the detected unit with respect to the detection unit, whereby the stencil printing box is 2. The apparatus according to claim 1, wherein it detects whether or not the apparatus main body is located at the predetermined position.   3. The detection means that the detection unit does not detect that the discharge box is not located at the predetermined position during the compression period only when the discharged plate is carried in a predetermined number or more. The plate removal control device described. A stencil box that is detachably attached to a predetermined position of the stencil printing apparatus main body, stores the stencil transported from the stencil printing apparatus main body, and can discard the stored stencil from a discharge port provided on one side surface portion When,
Compression means attached to the stencil printing apparatus main body and compressing the discharged plate carried into the discharged plate box and storing it in the discharged plate box;
Detecting means for detecting whether or not the plate discharging box is located at the predetermined position of the main body of the stencil printing apparatus by detecting the position of the side surface portion provided with the discharge port of the plate discharging box;
The stencil printing is characterized in that the detection means does not detect that the discharge box is not located at the predetermined position during the compression period in which the discharged discharge plate is compressed by the compression means. apparatus.