JP2006110893A - Master ejector, plate ejecting method, printer, and printing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a master ejector capable of preventing the leakage of confidential information from a used master in an ejected master storage container, even in the case of the master ejector for an inexpensive stencil printer etc., even in the case of the master ejector for a stencil printer etc. where the ejected master storage container can be freely attached to/detached in a direction orthogonal to a rotating shaft of a compression plate, and even in the case of the master ejector for a stencil printer etc. wherein the compression plate is provided on the side of an ejector body in such a manner as to be separate from the ejected master storage container. <P>SOLUTION: A control device 65 controls a compression plate driving motor 12 on the basis of an output signal from a standby position sensor 8 and a compression position sensor 10, so that a compression position can be set to be a home position of the compression plate 3, when a confidentiality preservation mode is set by pressing down a confidentiality preservation key 60. Thus, since respective protrusions 3a of the compression plate 3 are engaged with and fitted into respective notches 6b of side plates 6c and 6d, the container 6 cannot be disengaged from an ejector body 180. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a plate discharging apparatus, a plate discharging method, a printing apparatus, and a printing method, and more specifically, a plate discharging apparatus, a plate discharging method, a printing apparatus including a stencil printing apparatus, and a stencil printing method having a confidentiality maintaining function of a used master that has been discharged. The present invention relates to a printing method including

Conventionally, a heat-sensitive digital stencil printing apparatus is known as a simple printing method. This is because a porous cylinder (Japanese paper fiber or synthetic fiber, or Japanese paper and synthetic fiber) is mixed with a plate cylinder composed of a porous cylindrical support body and a thermoplastic resin film (hereinafter sometimes simply referred to as “film”). Ink supply means provided inside the plate cylinder after the film surface of the master is heated, melted, punched, and made with a thermal head, and wound around the plate cylinder. To supply an appropriate amount of ink to the inner peripheral surface of the plate cylinder, and press printing paper (hereinafter referred to as “paper”) as a sheet-like recording medium to the outer peripheral surface of the plate cylinder by pressing means such as a press roller or an impression cylinder. Thus, printing is performed by transferring and transferring the ink oozed from the plate cylinder opening portion and the master punching portion to the paper. Recently, this stencil printing apparatus continuously performs operations such as plate discharging, plate making, plate feeding, and printing, and has improved printing image accuracy and reduced printing cost. A predetermined number of copies (approximately 10 copies). The user who performs the print image formation is used instead of an electrophotographic copying machine or the like.
Although the plate cylinder is also called a printing drum, in this specification and the like, the printing drum is called a “plate cylinder”.

  In the stencil printing apparatus described above, prior to performing printing corresponding to a new document, the stencil printing apparatus first operates, and the used master used in the previous printing is peeled off from the plate cylinder, and this is also referred to as a stencil box. It is transported and stored in a so-called waste plate storage container. Thereafter, or partially in parallel with this, the plate making apparatus operates to make a plate on a new master and wind it around the plate cylinder. The used master stored in the plate-removing container is managed by the detection means (sensor) provided in the plate-removing device, and is discarded when the discharged-plate container is full. Disposal of used masters from the stencil storage container is performed manually, and the user removes and removes the stencil storage container from the stencil printing machine main body and removes the used master stored in the stencil printing machine into a predetermined disposal location or After discarding in a trash box or the like, the empty stencil storage container is mounted again on the stencil printing apparatus main body (see, for example, Patent Document 1).

  In the plate discharging apparatus disclosed in Japanese Patent Laid-Open No. 9-99621 (Patent Document 1), the used master is temporarily stored and stored in the plate discharging storage container after being peeled off from the plate cylinder, and the discharging plate storage container is full. Since it is discarded in the trash box or the like, it is possible to take out the used master stored in the evacuation container or discarded in the trash box except during the evacuation operation. In other words, a large number of unspecified persons can be obtained by taking out the used master information stored in the discharged-plate storage container and decoding it or transferring it. There was a situation that can be known. This is a big problem because there is a possibility that the secret may be leaked when the used master includes the one that should keep the secret.

As a means / method for preventing leakage of such confidential information, for example, Japanese Patent Application No. 2003-392645 filed by the applicant of the present application on November 21, 2003, or patent application filed on November 18, 2003. Japanese Patent Application No. 2003-388199 is cited. The plate discharging unit (plate discharging device) of the printing apparatus according to Japanese Patent Application No. 2003-392645 is provided with a dedicated locking means for preventing the plate discharging box (plate discharging storage container) from being detached from the main body of the stencil printing apparatus. ing.
Further, as in the technique proposed in Japanese Patent Application No. 2003-388199, in a plate discharging apparatus in which a plate discharging box (discharge plate storage container) and a compression plate are configured as one unit, the compression plate is rotated within a predetermined angle range. If the coupling that transmits the driving force for swinging has a function of a lock mechanism and the compression plate is located at a rotational position other than its home position, the coupling pin on the main body side and the release box side It has a control means and a lock mechanism for prohibiting the removal / removal of the discharge box by engaging with the joint hole.

JP-A-9-99621

However, since the plate discharging apparatus according to Japanese Patent Application No. 2003-392645 has a lock mechanism as a dedicated lock means, components (components) constituting the lock mechanism, that is, an electromagnetic solenoid and a lock lever, etc., are extra cost. In addition, there is a problem that a space for arranging these parts in the plate removal apparatus is required.
There are products with various price ranges in stencil printing machines (stencil printing devices), but for example, for models that are positioned as low-end models (low-priced models), miniaturization of machines and cost reduction are essential conditions. Yes. Therefore, it becomes very difficult to provide a dedicated locking mechanism as proposed in Japanese Patent Application No. 2003-392645 as a security maintaining means in a low-end model plate removing apparatus.

On the other hand, in the plate discharging apparatus according to Japanese Patent Application No. 2003-388199, the drive coupling itself of the compression plate is used as a lock mechanism, so that no special lock mechanism is required. However, in this example, since the coupling of the compression plate is used as a locking mechanism, it is necessary that the discharge plate box and the compression plate be a unit formed integrally, and the removal / removal direction of the discharge plate box is compressed. It was necessary to be in the axial direction of the plate rotation axis. Therefore, the coupling proposed in Japanese Patent Application No. 2003-388199 was used in the plate ejection mechanism having the compression plate on the side of the plate ejection apparatus main body and detaching the plate ejection box in the direction orthogonal to the axial direction of the compression plate rotation shaft. The lock mechanism could not be adopted.
In addition, when the platen box has a compression plate, a compression plate drive coupling is required, which incurs extra cost. Therefore, in a low-end model platen device, it is customary to provide the platen plate on the platen device body side. It was.

  The present invention has been made in view of the above-described circumstances, and even in a plate discharging apparatus such as a low-end (low price) stencil printing apparatus, which is in very strict conditions with respect to machine dimensions and cost, the plate discharging container is a compression plate. In a plate discharging apparatus such as a stencil printing apparatus that is detachable in a direction orthogonal to the rotation axis of the plate, a plate discharging apparatus such as a stencil printing apparatus in which the compression plate is provided separately from the plate discharging storage container on the apparatus main body side. In the present invention, it is also possible to provide a plate discharging apparatus, a plate discharging method, a printing apparatus including a stencil printing apparatus, and a printing method including a stencil printing method capable of preventing leakage of confidential information from a used master in a plate storing container. Main purpose.

In order to solve the problems and achieve the object, the invention according to each claim employs the following characteristic means and configuration.
The invention according to claim 1 is an apparatus main body that peels and conveys a used master on a plate cylinder around which a pre-made master is wound, and stores the used master conveyed by the discharged plate conveying means. Detachably with respect to the evacuated plate storing means, a standby position that does not interfere with the used master conveying path by the evacuated conveying means, and a compression position for compressing the used master into the evacuated storing means. In the plate discharging apparatus comprising the compression means, when the compression means occupies the standby position, the compression means and the plate storage means are not engaged with each other, and the detachment storage means is allowed to be detached from the apparatus main body. When the compressing means occupies the compression position, the disengagement prohibiting hand prohibits the disengagement of the discharged plate storing means from the apparatus main body by engaging the compressing means and the discharged plate storing means. Characterized in that it has a.

In the embodiment to be described later, as the plate discharge conveying means, a simple configuration and a low-priced plate discharge roller fixed type is adopted and described. However, if the advantage is not so desired, for example, a well-known plate discharge A roller displacement / swing type (a type in which a discharge roller or a discharge plate peeling roller is displaced to the plate cylinder side to peel and transport a used master on the plate cylinder) may be included, and this is also included in claim 1 .
Similarly, as the discharged plate storing means and the compressing means, a configuration in which the used master is compressed in the discharged plate storing means by a compression member (compression plate) swinging around the rotation shaft is simple and low cost. However, if the advantage is not required so much, for example, the compression member (compression plate) is displaced in parallel with respect to the discharge plate storing means, that is, for example, the vertical direction. A relatively large and high-priced type that compresses the used master in the discharged-plate storage means by moving up and down to the upper limit, and this is also included in claim 1. Therefore, as the disengagement prohibiting means in claim 1, when the compressing means occupies the standby position, the compressing means and the discharged plate storage means do not engage with each other, allowing the discharged plate storing means to be detached from the main body, and the compressing means. When the compression position occupies the compression position, the detachment of the discharged plate storage means from the apparatus main body may be prohibited by engaging the compression means and the discharged plate storage means.
As the separation prohibiting means, when the compression means occupies the compression position, a part of the compression means and a part of the discharge plate storage means are engaged to thereby prevent the release plate storage means from being detached from the apparatus main body. Those that are simple in structure and low in cost are preferably employed (see the further limited claims 4 and 5).

  According to the configuration of claim 1, there is no need for special locking means, the size of the apparatus is increased with a simple structure, and the waste storage means from the apparatus main body is kept in a state where cost increase is minimized. It is possible to provide a plate removal apparatus that can prevent separation and, in turn, can prevent leakage of confidential information of a used master in the plate removal storage means.

According to a second aspect of the present invention, there is provided the plate discharging apparatus according to the first aspect, wherein the compression means includes a compression member that can swing around a rotation shaft, and the mounting direction of the plate storage means is determined by the rotation shaft. It is set in the direction substantially orthogonal to the axial direction.
As a result, for example, a low-end (low-cost) plate discharging device in which a lock mechanism using the drive coupling itself of the compression member cannot be provided can be provided.

According to a third aspect of the present invention, in the plate discharging apparatus according to the first or second aspect, the compression unit is disposed on the apparatus main body side separately from the plate discharging storage unit.
As a result, for example, a low-end (low-priced) plate discharge device can be provided in which the compression means and the plate storage means do not form an integral unit in order to use the drive coupling of the compression means as a lock mechanism.

According to a fourth aspect of the present invention, in the plate discharging apparatus according to the first, second, or third aspect, the separation prohibiting means is formed in a part of the discharged plate storing means when the compression means occupies the compression position. It has a recessed part or a convex part, and the convex part or recessed part formed in a part of said compression means engaged with this, It is characterized by the above-mentioned.
As a result, it is possible to provide a low-priced plate removal apparatus with a simpler configuration.

  In an embodiment to be described later, the concave portion is formed as a part of the compressing means (for example, a compression plate), for example, as a notch portion formed in a part of the discharged plate storage means (for example, the discharged plate storage container), and For example, it is configured as a protrusion that also serves as a member to be detected (for example, a light shielding plate) of position detection means (see claim 6 described later) that detects at least one of the standby position and the compression position. Here, if it is not necessary to have the advantage of serving as a member to be detected (for example, a light shielding plate) by the convex portion (for example, a projection) of the compression means and the advantage of easily ensuring the strength, the opposite to the above. Further, for example, a protruding portion as a convex portion may be formed in a part of the discharged plate storing means (for example, a discharged plate storage container), and a notched portion as a concave portion may be formed in a part of the compressing means (for example, a compression plate). .

According to a fifth aspect of the present invention, in the plate discharging apparatus according to the fourth aspect, the concave portion is formed with a recess along a direction substantially perpendicular to the attaching / detaching direction of the plate storing means.
As a result, it is possible to provide the lowest price discharging apparatus with the simplest configuration.

  According to a sixth aspect of the present invention, in the plate discharging apparatus according to any one of the first to fifth aspects, the compression means is set so as to return to its home position, and is used in the plate discharging storage means. Detecting at least one of the standby position and the compression position, the confidentiality mode setting means for setting the confidentiality mode when it is not desired to know the information of the completed master, the compression driving means for driving the compression means, And when the confidentiality mode is set by the confidentiality mode setting means, the standby position is the home position when the confidentiality mode is not set so that the compression position is the home position. Control means for controlling the compression drive means based on an output signal from the position detection means so as to be in a position. And wherein the Rukoto.

  Thus, when the confidentiality mode is set by the confidentiality mode setting means, the control means controls the compression driving means based on the output signal from the position detection means so that the compression position becomes the home position of the compression means. Therefore, it is possible to prevent the removal of the discharged plate storage means from the main body of the device by simply setting the confidentiality mode, and the third party illegally acquires the used master confidential information stored in the discharged plate storage means. Therefore, it is possible to provide a plate removal apparatus that prevents the information from being decoded or transferred and prevents leakage of confidential information of a used master in the plate removal storage means.

  Here, when the compression driving means is a stepping motor driven by pulse input, for example, if it has a position detection means for detecting the standby position or the compression position, it detects which position the compression means occupies. However, when considering the problem at the time of stepping out of the stepping motor, it is preferable to detect both the standby position and the compression position as in the embodiments described later. Therefore, it is only necessary to have position detection means for detecting at least one of the standby position and the compression position regardless of the compression drive means. In this case, if necessary, a plate full detection means for detecting that the used master is fully accumulated may be provided in the plate stock storage means.

According to a seventh aspect of the present invention, the plate removal apparatus according to any one of the first to sixth aspects can be used to prohibit the removal of the used master in the plate removal storage means. Is the method.
Accordingly, a plate discharging method that achieves the above-described effects can be obtained by using the plate discharging device according to any one of claims 1 to 6 and prohibiting the removal of the used master in the plate discharging storage means. Can be provided.

The invention according to claim 8 includes the plate discharging apparatus according to any one of claims 1 to 6, the plate cylinder, and ink supply means for supplying ink to a master on the plate cylinder, A printing apparatus that prints on a printing sheet by pressing the printing sheet directly or indirectly against the master on the plate cylinder.
Thereby, the printing apparatus which exhibits said each effect using the plate discharging apparatus etc. as described in any one of Claim 1 thru | or 6 can be provided.
“Printing on the printing paper by directly or indirectly pressing the printing paper on the master on the plate cylinder” means printing on the printing paper by pressing the printing paper directly on the master on the plate cylinder. In addition to including a printing device, for example, after ink formed from a master on a plate cylinder is transferred to a transfer cylinder to form an ink image, the printing paper is indirectly pressed against the ink image on the transfer cylinder A printing apparatus that performs printing is also included.

According to a ninth aspect of the present invention, there is provided a printing method using the printing apparatus according to the eighth aspect, wherein the removal of the used master in the discharged-plate storing means can be prohibited.
Thus, by using the printing apparatus according to the eighth aspect, it is possible to prohibit the removal of the used master in the discharged-plate storage means, thereby providing a printing apparatus that exhibits the above-described effects.

According to the present invention, it is possible to provide a novel plate discharging apparatus, plate discharging method, printing apparatus, and printing method by solving the above-described problems of the prior art. The main effects are as follows.
According to the present invention, there is no need for special locking means, the apparatus is simply increased in size and the size of the apparatus is not increased, and the waste storage means is detached from the apparatus main body while minimizing cost increase. As a result, leakage of confidential information due to removal of the used master in the discharged-plate storage means can be prevented.

  According to the present invention, when the confidentiality mode is set by the confidentiality mode setting means, the control means compresses the compression driving means so that the compression position becomes the home position of the compression means based on the output signal from the position detection means. By controlling this, it is possible to prevent detachment of the discharged plate storing means from the main body of the apparatus by simply setting the confidentiality mode, and a third party can store the confidential information of the used master stored in the discharged plate storing means. It is possible to prevent illegal acquisition and decryption or transfer, and to prevent leakage of confidential information of the used master in the discharged-plate storage means.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention including examples will be described with reference to the drawings. In each embodiment and the like, components (members and components) having the same function, shape, and the like will be omitted by giving the same reference numerals after being described once. In the figure, components that are configured in a pair and do not need to be specifically distinguished and described are described by appropriately describing one of them for the sake of simplification of description. In order to simplify the drawings and the description, even if the components are to be represented in the drawings, the components that do not need to be specifically described in the drawings may be omitted as appropriate. When quoting and explaining constituent elements such as published patent gazettes, the reference numerals are shown in parentheses to distinguish them from those of the embodiments.

An embodiment of the present invention will be described with reference to FIGS.
First, an overall configuration of a stencil printing apparatus 100 as an example of a printing apparatus according to an embodiment will be described with reference to FIG. In the figure, reference numeral 180 denotes an apparatus main body that forms the framework of the stencil printing apparatus 100. In the upper part of the apparatus main body 180, a portion indicated by reference numeral 170 is an image reading portion, a portion indicated by reference symbol 130 at the lower right is a plate making portion, a portion indicated by reference numeral 120 at the lower center is a printing portion, and A portion indicated by reference numeral 150 indicates a discharging portion, a portion indicated by reference numeral 140 below the plate making portion 130 indicates a paper feeding portion, and a portion indicated by reference numeral 160 on the left side of the printing portion 120 indicates a paper discharge portion.

  As shown in FIG. 1, the printing unit 120 is disposed substantially at the center of the apparatus main body 180, and includes a plate cylinder 16 that winds a master 28 having a plate-making image formed thereon, and a plate cylinder. 16 and a press roller 17 as pressing means for pressing the paper P against the master 28 on the plate making. The printing unit 120 has a function of printing by directly pressing the sheet P fed from the sheet feeding unit 140 to the master 28 on the plate cylinder 16 that is rotationally driven by the press roller 17 as a pressing unit. It has a configuration.

The plate cylinder 16 has a pair of end plates (not shown) rotatably supported by a support shaft 18 that also serves as an ink supply pipe, and a large number of ink-permeable holes, and is wound around the outer peripheral surface of each end plate. It is mainly composed of an attached porous support plate (not shown) and a mesh screen (not shown) as an ink holding member wound around the outer peripheral surface of the porous support plate.
The porous support plate is formed in a cylindrical shape and has a large number of ink-permeable holes. This porous support plate is sometimes called a porous support cylinder or simply a plate cylinder.

  On the outer peripheral surface of the plate cylinder 16, a stage 19 </ b> A disposed along one generatrix of the outer peripheral surface of the plate cylinder 16, a rotation shaft provided in parallel with the stage 19 </ b> A, and a plate attached to the rotation shaft A clamper 19 that is openable and closable with respect to the stage 19 </ b> A is provided as a holding means for holding and fixing the master 28 on the cylinder 16. The clamper 19 can peel the used master 28 from the plate feeding position shown in FIG. 1 where the tip of the master 28 conveyed and fed from the plate making unit 130 can be received and on the plate cylinder 16. When the plate cylinder 16 selectively occupies a plate discharging position (not shown) that is not shown in the figure (a position substantially opposite to the upper plate conveying roller 2), a well-known well-known device provided with a clamper opening / closing motor is provided on the apparatus main body 180 side. Opened and closed by the opening / closing means. The home position of the plate cylinder 16 is set in advance, for example, at a position where the rotation center axis of the clamper 19 is located directly above in FIG.

  The plate cylinder 16 is rotationally driven by a plate cylinder drive motor 69 schematically shown in FIG. More specifically, the plate cylinder 16 is driven in the same manner as the drive mechanism of the plate cylinder (7) shown in FIG. 2 of JP-A-8-183238 and described in paragraphs “0016” to “0020”. The mechanism is rotationally driven in the arrow direction (clockwise) in FIG.

  The detection of the home position, the feeding position, and the discharging position of the plate cylinder 16 and the stop control thereof are performed by a known control configuration similar to that shown in FIGS. 2 and 4 of JP-A-8-183238, for example. . That is, the home position and the plate feeding position are detected by the home position sensor (26) and a plate feeding position sensor similar thereto (however, only the arrangement position around the plate cylinder 16 is different), and the plate cylinder driving motor (12). Is stopped. On the other hand, the plate displacement position is detected by the pulse detection sensor (23), and the rotation position signal (angle signal) of the motor (12) transmitted through a pulse counter and a comparator (not shown) and the home position sensor (26). ) From the signal related to the home position.

Around the clamper 19, for example, components similar to those disclosed in JP-A-6-247031 or JP-A-2002-137520 are disposed. That is, a claw-like portion (not shown) that is disposed in the vicinity of the stage 19 </ b> A so as to be swingable and kicks out the tip of the used master 28 on the plate cylinder 16 in the substantially centrifugal direction of the plate cylinder 16. A plurality of elastic thin plates are provided along the axial direction of 16 and open and close in conjunction with the opening and closing operation of the clamper 19. Therefore, the clamper 19 can be opened at a predetermined angle required for the plate feeding and discharging, so that it is possible to use the automatic plate feeding and automatic plate discharging device having a relatively simple mechanism and the clamper only at the plate discharging position. 19 is opened at a large angle required for discharging the plate, and the elastic thin plate that swings in conjunction with the clamper 19 is swung in a direction protruding from the recessed portion in the centrifugal direction of the plate cylinder 16. It is possible to realize a reliable plate removal.
A known ink supply means 22 having an ink roller 20 and a doctor roller 21 is arranged inside the plate cylinder 16.

A press roller 17 is disposed below the plate cylinder 16 so as to face the ink roller 20. Both ends of the press roller 17 are rotatably supported between a pair of press roller arms 23, and the press roller arms 23 are swung by a not-shown press roller rocking means so that the press roller 17 is placed on the outer peripheral surface of the plate cylinder 16. It is approached and separated. The press roller 17 includes a printing position indicated by a broken line in FIG. 1 that is pressed against the outer peripheral surface of the plate cylinder 16 by the operation of the press roller oscillating means, and an obstacle such as a clamper 19 that moves as the plate cylinder 16 rotates. It selectively occupies a non-printing position shown by a solid line in FIG. 1 separated from the printing position where it does not interfere. Around the press roller arm 23, a well-known locking means for holding the press roller 17 in the non-printing position is also provided.
Control target drive means such as the plate cylinder drive motor 69 in the printing unit 120 is generally represented by a main drive unit 70 in FIG. As will be described later, the main drive unit 70 also includes control target drive means (actuators such as electric motors) for the paper feed unit 140 and the paper discharge unit 160.

The plate making unit 130 has a function and a structure for making the master 28 and transporting and feeding the master 28 after the plate making to the outer peripheral surface of the plate cylinder 16. As shown in FIG. 1, the plate making unit 130 includes a master roll support member 24, a platen roller 25, a thermal head 26 as plate making means, a cutting means 27, and the like.
The master roll support member 24 rotatably and detachably supports the core pipe of the master roll formed by winding the master 28 around the core pipe.

  Any known master 28 may be used. For example, Japanese Patent Application Laid-Open No. 10-147075 discloses, for example, that a relatively small amount of ink is adhered, printing unevenness is small, the back stain of the printed matter is small, and image quality deterioration due to fibers can be reduced. A master or, for example, a polyethylene terephthalate (PET) -based film having a laminate structure in which Japanese paper fiber or synthetic fiber as a support or a mixture of Japanese paper and synthetic fiber is bonded with an adhesive, A conventional master (specifically, for example, a polyethylene terephthalate (PET) film or the like has a thickness of about 1 to 2 μm, a support has a thickness of about 45 to 55 μm, and a total thickness of about 50 to 60 μm. Compared to those used, the thickness is relatively thin and low strength (specifically, For example, the film structure is the same, and the support has a thickness of about 25 to 30 μm and a total thickness of about 30 to 35 μm is used), or a master consisting essentially of a thermoplastic resin film can be used. Good.

The platen roller 25 is rotationally driven by a stepping motor 29. The thermal head 26 has a large number of heating elements and is configured to be able to come into contact with and separate from the platen roller 25 by means of contact and separation means (not shown), and is pressed against the platen roller 25 during plate making. The thermal head 26 controls each heating element while contacting the surface of the thermoplastic resin film of the master 28 based on an image data signal as image information transmitted via a plate making control unit (not shown) and a thermal head drive circuit. By selectively generating heat, the thermoplastic resin film portion of the master 28 is subjected to hot melt perforation plate making, and a plate making image corresponding to the image data signal is formed.
As the image information, in addition to the image information of the original read by the image sensor 44 of the image reading unit 170, a computer such as a personal computer when connected to the stencil printing apparatus 100 via a network or the like is possible. Image information transmitted from (external image information input means) is also included.

The cutting means 27 has a movable blade and a fixed blade, and cuts the master 28 when the movable blade moves up and down or rotates relative to the fixed blade. Two sets of master conveyance rollers for conveying the master 28 and a master guide plate for guiding the conveyance are disposed downstream of the cutting means 27 in the conveyance direction of the master 28. The two sets of master conveying rollers are connected to a stepping motor 29 via a gear train or a drive transmission means such as a belt spanned between a plurality of pulleys and pulleys, and are driven to rotate by the stepping motor 29. . An electromagnetic clutch (not shown) as drive connecting / disconnecting means is disposed on, for example, the upper shaft portion of the most downstream master transport roller pair in the transport path of the master 28, and the stepping motor 29 of the stepping motor 29 is appropriately timed. The driving force is cut off.
Each of the control target drive means such as the thermal head 26, the stepping motor 29, the drive means (for example, a cutter motor not shown) in the plate making section 130, the electromagnetic clutch, and the like is generally represented by a plate making drive section 73 in FIG. .

  As shown in FIG. 1, the paper feed unit 140 includes a paper feed tray 30 as a paper feed table, a paper feed roller 31, a separation roller 32, a separation roller 33, a registration roller pair 34, and the like. The sheet feed tray 30 is loaded with a large number of sheets P on its upper surface and is supported by the apparatus main body 180 so as to be movable up and down, and is moved up and down by a lifting means (not shown). The paper feed roller 31 and the separation roller 32 each have a high friction resistance member on the surface thereof, and are brought into pressure contact with the paper P on the paper feed tray 30 at a predetermined pressure and rotated in synchronization with each other by a common stepping motor 35. Driven. The separation roller 33 is pressed against the separation roller 32 and is intermittently rotated in the same direction as the separation roller 32. The registration roller pair 34 includes a driving roller and a driven roller, and is rotationally driven in synchronization with the rotation of the plate cylinder 16 to feed the paper P toward the printing unit 120 at a predetermined timing.

  As shown in FIG. 1, the paper discharge unit 160 has a function and a configuration in which the paper P printed by the printing unit 120 is peeled off from the outer peripheral surface of the plate cylinder 16 and discharged to a paper discharge tray 39 as a paper discharge table. The paper discharge unit 160 includes a separation blower fan 36, a separation claw 37, a paper discharge conveyance unit 38, the paper discharge tray 39, and the like.

  The peeling claw 37 has a function of peeling the printed paper P from the outer peripheral surface of the plate cylinder 16 and is supported by the apparatus main body 180 so as to be swingable. It selectively occupies a position close to the outer peripheral surface of the plate cylinder 16 and a position where the tip does not interfere with an obstacle such as the clamper 19 that moves as the plate cylinder 16 rotates. The peeling fan 36 blows the air compressed from the blower opening between the master 28 on the plate cylinder 16 and the leading end of the paper P, and assists the peeling action of the paper P by the peeling claw 37. Have

The paper discharge conveyance unit 38 includes a driving roller, a driven roller, an endless belt having a large number of air suction holes, a suction fan, and the like. The sheet P peeled off from the surface is sucked onto the endless belt and conveyed in the direction indicated by the arrow in FIG. The drive roller and the endless belt are rotationally driven by a belt drive motor (not shown). The paper discharge tray 39 stacks the paper P conveyed by the paper discharge conveyance unit 38 on its upper surface, and has a pair of side fences movable in the paper width direction and one end fence movable in the paper conveyance direction. And have.
The control target drive means such as the stepping motor 35 in the paper feed unit 140, the belt drive motor in the paper discharge unit 160, the suction fan, and the plate cylinder drive motor 69 in the printing unit 120 described above are mainly shown in FIG. This is represented by the drive unit 70.

The image reading unit 170 has a function / configuration for reading an image of a document. As shown in FIG. 1, the image reading unit 170 includes a contact glass 40 for placing a document, a pressure plate 41, a scanning unit 42 that scans and reads the document, a lens 43 that focuses the scanned image, and the focused image. An image sensor 44 such as a CCD (charge coupled device) to be processed is provided. An ADF unit 45 including a document transport motor (not shown) that automatically transports a document to a document reading unit is disposed above the pressure plate 41.
Control target driving means such as the document conveying motor in the image reading unit 170 is generally represented as an image reading drive unit 72 in FIG.

The plate removal unit 150 has a function and configuration as a plate removal device that peels and removes the used master 28 wound around the outer peripheral surface of the plate cylinder 16. Hereinafter, with reference to FIGS. 1 to 5, the plate discharging unit 150 (hereinafter referred to as “plate discharging device 150”) will be described in detail.
As shown in FIG. 1, the plate discharge device 150 includes a plate discharge roller pair 1 </ b> A as a plate discharge conveyance unit that peels and conveys a used master 28 (hereinafter simply referred to as “master 28”) on the plate cylinder 16. Interference with the waste-plate storage container 6 as a waste-plate storage means for storing the master 28 transported by the pair of plate-rolling rollers 1A, and the used master transport path (hereinafter sometimes referred to as a "plate-release path") by the pair of plate-rolling rollers 1A. A compression plate 3 as compression means that selectively occupies the standby position shown in FIGS. 1 and 2 and the compression position shown in FIGS. 3 and 4 for compressing the used master 28 into the discharged-plate storage container 6, and compression When the plate 3 occupies the standby position, the compression plate 3 and the discharged plate storage container 6 do not engage with each other, and the detachment of the discharged plate storage container 6 from the apparatus main body 180 is permitted, and the compressed plate 3 occupies the compressed position. , Compression plate By part of the a portion of the plate discharge container 6 is engaged, and a detachment inhibiting means to be described later to prohibit withdrawal from the apparatus main body 180 of the plate discharge container 6.

  The discharge roller pair 1 </ b> A is similar to the discharge roller pair (5) disclosed in, for example, Japanese Patent Laid-Open No. 2000-43394, FIG. 1 to FIG. 3, and is used wound around the outer peripheral surface of the plate cylinder 16. The platen roller is of a fixed type in which the master 28 is sandwiched and pulled in while being peeled off. The pair of discharged plate rollers 1A has a lower discharged plate conveying roller 1 and an upper discharged plate conveying roller 2 which are in pressure contact with each other. The rotation shafts 1a and 2a forming the shaft portions of these rollers are arranged on the paper surface of FIGS. It is rotatably supported by a pair of unit side plates 9a and 9b disposed on the back side and the near side. The unit side plate pairs 9a and 9b are fixed to the apparatus main body 180.

  In FIG. 2, a driven gear (rotating shaft 2a) and a driving gear (rotating shaft 1a) (not shown) that mesh with each other are fixed to end portions of the rotating shafts 1a and 2a on the back side of the drawing. The lower plate conveying roller 1 is connected to a plate driving motor 11 composed of, for example, a stepping motor as a plate driving means via a drive transmission means such as a gear train (not shown) that meshes with the driving gear. As a result, the lower plate conveying roller 1 and the upper plate conveying roller 2 are rotated in opposite directions by the plate driving motor 11 as shown by arrows in FIGS. 1 and 2, and in FIG. 2, the upper plate conveying roller 2 is rotated clockwise. In addition, the lower discharge plate conveying roller 1 is driven to rotate counterclockwise. The plate removal drive motor 11 is driven at a predetermined timing as will be described later.

  A plurality of discharge roller pairs 1A are provided at intervals in the axial direction of the plate cylinder 16, and a blade member that rotates in synchronization with the upper discharge conveyance roller 2 beside the upper discharge conveyance roller 2 in each discharge roller pair 1A. The impeller 2B is provided. The impeller 2B has a roller-like base portion fixed to the rotation shaft 2a of the upper discharge plate conveying roller 2 and extends radially from the base portion in the centrifugal direction (radial direction) of the upper discharge plate conveying roller 2. A plurality of elastic blades 2Ba having a length protruding outward from the outer peripheral surface / outer diameter are provided. The upper plate transport roller 2 and the impeller 2B are formed of an elastic body such as nitrile rubber having ink corrosion resistance (oil resistance).

As shown in FIG. 1 and FIG. 2, the elastic blade 2Ba is deformed so as to be bent in contact with the lower plate conveying roller 1 during the plate discharging. The elastic blade 2Ba is in contact with the leading end portion of the master 28 and draws the master 28 into the nip portion between the lower plate conveying roller 1 and the upper plate conveying roller 2, and the periphery of the upper plate conveying roller 2 by hitting the master 28. It has a function of preventing the peeled master 28 from sticking to the surface.
The lower discharge plate conveying roller 1 is formed of a resin having ink corrosion resistance (oil resistance) (for example, ABS resin or polyacetal resin), and reduces the sticking of the master 28 containing ink on the outer peripheral surface thereof. Therefore, in order to reduce the contact area with the master 28, tooth profile processing and knurling processing that are not shown are performed. The pair of discharge rollers 1A extends in the axial direction of the rotary shafts 1a and 2a so that the master 28 having the maximum size can be conveyed in the master width direction usable in the stencil printing apparatus 100.

  In the plate discharging path on the left side of the plate discharging roller pair 1A, the base end side is attached and fixed to the rotating shaft 4 rotatably supported in a predetermined angle range between the unit side plate pairs 9a and 9b. A compression plate 3 as a compression member that swings in the direction of the arrow in FIGS. 1 and 2 is provided at the center. A standby position sensor 8 and a compression position sensor 10 including a light transmission type optical sensor having a light emitting part and a light receiving part are attached and fixed at predetermined positions on the inner side (inner wall) of the unit side plate 9a on the back side of the drawing.

The free end side of the compression plate 3 passes through a position close to the bottom of the nip portion of the plate discharge roller pair 1A, and the used master 28 conveyed by the plate discharge roller pair 1A is placed on the plate discharge container 6 It swings approximately 180 degrees toward the upper surface of the discharged-plate storing portion 6a (a position near the upper position where the discharged-plate storing portion 6a is filled with the used master 28), and the used master 28 is sequentially compressed and stored in the discharged-plate storing portion 6a. It is supposed to be.
As shown in detail in FIG. 2, the compression plate 3 is integrally formed with ribs in a lattice shape in plan view to prevent sticking to the used master 28 to which ink is adhered and to ensure a predetermined strength. Is formed. The compression plate 3 extends in the axial direction of the rotary shaft 4 so as to compress the master 28 having the maximum size in the master width direction that can be used in the stencil printing apparatus 100, and is below the guide plate 5 described later. A notch groove is formed on the free end side to prevent interference between the protruding portion of the roller and the roller portion of the lower discharged plate conveying roller 1.

  The compression plate 3 is connected to the compression plate drive motor 12 via a drive transmission means such as a gear (not shown) attached to one end of the rotary shaft 4, and is thereby oscillated and driven at a predetermined timing. The compression plate drive motor 12 is, for example, a stepping motor. The discharged-plate storage container 6 is detachably attached to the unit side plate pair 9a, 9b. When the master 28 compressed by the compression plate 3 is full, a fullness detection unit (not shown) (master over-storage prevention device described later) is provided. And the compression position sensor 10 constitutes a full detection means when the time required for the compression plate 3 to reach the compression position exceeds a predetermined time. However, it can be disposed of appropriately by detecting this and informing the user. In the present embodiment, in order to obtain an inexpensive plate removal apparatus 150, a drive coupling mechanism for the compression plate is not employed, and the attachment / detachment direction (detachment direction Xa) of the plate removal container 6 is thereby changed as shown in FIGS. For example, it is set in a direction orthogonal to the axial direction of the rotating shaft 4 of the compression plate 3 indicated by an arrow.

  On the front side and the back side of the paper surface of the compression plate 3, protrusions 3a protruding outward are integrally formed. The pair of protrusions 3a has a function as a convex portion constituting the above-described detachment prohibiting means. When the used master 28 is transported by the pair of discharge rollers 1A, the front end side of the protrusion 3a on the back side of the compression plate 3 blocks the optical path of the standby position sensor 8 provided on the unit side plate 9a on the back side, thereby discharging the plate. It occupies the standby position shown in FIG. 1 and FIG. 2 that does not interfere with the path (master transport path).

  2 and 3, reference numeral 14 is supported so as to be swingable around the rotation shaft 4 in order to keep the storage compression amount of the master 28 stored and compressed in the discharged plate storage container 6 within a certain range. Reference numeral 15 denotes a lever-like master compression amount holding member. Reference numeral 15 denotes a predetermined range of biasing force in the discharge plate storage container 6 in order to hold the storage compression amount of the master 28 stored and compressed in the plate discharge storage container 6 within a certain range. Each of the springs (tensile springs) applied to the stored and compressed master 28 is shown. The master compression amount holding member 14, the spring 15 and the like constitute a known master over-storage prevention device.

  The discharged plate storage container 6 engages and fits with the discharged plate storage portion 6a for storing and accumulating the used master 28 and the pair of protrusions 3a of the compression plate 3 when the compression plate 3 occupies the compression position. Side walls 6c and 6d each having a notch portion 6b to be joined, a handle 6e for operating the plate storage container 6 to be attached and detached, and the tip of the used master 28 conveyed by the plate discharge roller pair 1A are abutted and discharged. There is a stop wall 6f for guiding into the storage portion 6a.

The pair of notches 6b have a function as a recess that constitutes the above-described detachment prohibiting means, and form a recess whose upper part is open along the vertical direction in the figure orthogonal to the attaching / detaching direction of the discharged plate storage container 6. . The side walls 6c and 6d, the handle 6e, and the stop wall 6f are formed integrally with the plate removal storage portion 6a.
A unit base 7 that removably guides and supports the discharged plate storage container 6 is fixed between the lower portions of the unit side plate pairs 9a and 9b, and the discharged plate is discharged between the upper portions of the unit side plate pairs 9a and 9b. A guide plate 5 for guiding the used master 28 is fixed. As shown in FIG. 5, the discharged plate storage container 6 is guided by well-known guide means such as a guide groove (not shown) formed integrally with the unit base 7, while being mounted. It is possible to occupy the separation position where the apparatus main body 180 is detached from the unit base 7. When the discharged plate storage container 6 occupies the mounting position, it is positioned by a known positioning means. When the discharged plate storage container 6 is detached from the apparatus main body 180 and occupies the separation position, the remaining portion of the discharged plate apparatus 150 on the apparatus main body 180 side becomes the discharged plate unit main body 13. That is, it can be expressed that the plate discharging apparatus 150 is mainly composed of the plate discharging unit main body 13 and the plate discharging storage container 6 detachably attached to the plate discharging unit main body 13.

As shown in FIG. 1 and FIG. 2, when the discharged plate storage container 6 occupies the mounting position, the notches 6b formed in the side walls 6c and 6d face the compression position sensor 10 attached to the unit side plate 9a. As described above, the respective positions and shapes are set. When the compression plate 3 shown in FIGS. 1 and 2 swings counterclockwise from the standby position to occupy the compression position as shown in FIGS. 3 and 4, the protrusions 3a on both sides of the compression plate 3 The respective positions and shapes are set so as to be located in the notches 6b of the side walls 6c and 6d provided so as not to interfere with the swing locus.
As shown in FIG. 3 and FIG. 4, the optical path of the compression position sensor 10 provided on the unit side plate 9a on the back side where the oscillation end point of the compression plate 3, that is, the base end side of the protrusion 3a on the back side of the compression plate 3 is provided. The compression position is detected by shielding

As described above, when the compression plate 3 occupies the compression position, the pair of protrusions 3a of the compression plate 3 and the pair of notches 6b of the discharged-plate storage container 6 are engaged and fitted to each other from the apparatus main body 180. Accordingly, the material, shape, dimensions, and the like of the compression plate 3 and the discharged plate storage container 6 are selected and set so as to ensure an appropriate strength.
Control target drive means such as the plate release drive motor 11 and the compression plate drive motor 12 in the plate release apparatus 150 are generally represented by a plate release drive unit 71 in FIG.

FIG. 5 shows an operation panel 46 for operating the stencil printing apparatus 100. The operation panel 46 is provided on the upper front surface of the apparatus main body 180. On the upper surface of the operation panel 46, a plate making start key 47, a printing start key 48, a trial printing key 49, a continuous key 50, a clear / stop key 51, a numeric key 52, an enter key. 53, a program key 54, a mode clear key 55, a printing speed setting key 56, a four-direction key 57, a display device 58 composed of a 7-segment LED (light emitting diode), a display device 59 composed of an LCD (liquid crystal display device), and a security key. 60 etc.
The confidentiality key 60 has a function as a confidentiality mode setting means for setting the confidentiality mode when it is not desired to know the information of the used master 28 discarded in the discharged-plate storage container 6. When the secret key 60 is pressed, an LED built in the key 60 is lit to indicate that the secret key mode is set.

  In this embodiment, the confidentiality mode canceling means for canceling the confidentiality mode setting state is set so that only a person who should retain confidential information can be canceled by a combination of the numeric keypad 52 and the enter key 53. . Specifically, for example, by pressing “6, 7, 8, 9” in this order as a secret code (security release code) with the numeric keypad 52, pressing the enter key 53 causes the secret code “6, 7, By confirming and inputting “8, 9”, the confidentiality mode setting state can be canceled.

With reference to FIG. 7, the control structure of the principal part of this embodiment is demonstrated.
In FIG. 7, reference numeral 65 denotes a control device as a control unit that controls the main part of the stencil printing apparatus 100 according to the present embodiment. The control device 65 includes a CPU 66 (central processing unit), a RAM 67 (read / write storage device) as storage means, a ROM 68 (read only storage device) as storage means, a timer (not shown), and an I / O / I (not shown). / F (input / output port interface) and the like, and a microcomputer having a configuration in which they are connected by a signal bus (not shown).

The control device 65 is provided in a control board placement unit (not shown) in the device main body 180. The CPU 66 (hereinafter sometimes referred to as “control device 65” for the sake of simplicity) is read by the image sensor 44 of the image reading unit 170 via the input port interface or the like, and is not shown in the drawing image reading circuit. And an image data signal processed by the image signal processing unit and an angle signal (rotation position / angle signal of the plate cylinder 16) detected by the pulse detection sensor and passed through the pulse counter and the comparator. The output signal from the various keys on the operation panel 46, the output signal from the home position sensor, the output signal from the confidential mode position sensor, the standby position sensor 8 and the compression position sensor 10. Output signal is input.
Each signal input to the CPU 66 is arithmetically processed by the CPU 66 based on the operation program and the related data stored in the ROM 68, and the above-mentioned signals of the main drive unit 70 are output via the output port interface and various motor drive circuits (not shown). Each control target drive means is connected to each control target drive means of the image reading drive section 72 via various motor drive circuits (not shown), and the plate making drive section 73 via various motor drive circuits and thermal head drive circuits (not shown). The display device of the operation panel 46 via the liquid crystal drive circuit and the light emitting diode drive circuit (not shown) to the control target drive means of the discharge plate driving unit 71 via the various motor drive circuits (not shown). 58 and 59 are output as operation / command signals from the CPU 66, respectively.

The ROM 68 stores in advance an operation program related to operations to be described later, a program for exhibiting the control function by the CPU 66, related data, and the like. The RAM 67 temporarily stores the judgment results and calculation results in the CPU 66 and stores the output signals from the sensors and the keys as needed to input and output these signals. The called operation program is temporarily written and has a backup memory.
That is, each output signal (the security key 60 of the operation panel 46, the standby position sensor 8 and the compression position sensor 10) input to the CPU 66 is processed by the CPU 66 based on the operation program and the related data stored in the ROM 68. The CPU 66 outputs an operation / command signal to the compression plate drive motor 12 via a motor drive circuit (not shown). In the RAM 67, an operation program called from the ROM 68 by the CPU 66 is temporarily written, and when the security key 60 is pressed by the user, a security mode program is written. The RAM 67 has a backup memory, and the written confidentiality mode program is configured not to be erased even when the power switch of the stencil printing apparatus 100 is turned off.

The confidentiality mode program written in the RAM 67 is erased only by the confidentiality mode canceling means and enters the confidentiality mode cancel state. Based on the signal from the security key 60, the CPU 66 serves as a control means for controlling the compression plate drive motor 12 via a motor drive circuit (not shown) so as to prevent the release plate container 6 from being detached from the apparatus main body 180. It has a function. That is, when the confidentiality mode is set by pressing the confidentiality key 60, the control device 65 (CPU 66) does not set the confidentiality mode so that the compression position becomes the home position of the compression plate 3 (the confidentiality mode). Control means for controlling the compression plate drive motor 12 based on the output signals from the standby position sensor 8 and the compression position sensor 10 so that the standby position becomes the home position of the compression plate 3 when the mode is released. As a control function.
As described above, when the security key 60 on the operation panel 46 is pressed, the CPU 66 controls the compression plate drive motor 12 so that the compression plate 3 is positioned at the compression position. It can be held at a position where it cannot be detached from the apparatus main body 180 (a mounting position in this embodiment).

  As described above, the plate discharging apparatus 150 in the stencil printing apparatus 100 according to the present embodiment has a compression plate compared to a low price series stencil printing machine currently produced, for example, a plate discharging apparatus in a preport JP750 manufactured by Ricoh Co., Ltd. In place of the above, the plate has a different compression plate 3 only in that it has a protruding portion 3a having an appropriate strength, and is different in that it has a cutout portion 6b having an appropriate strength in place of the discharge plate storage container. The only difference is that it has a control device 65 that differs only in that it has the specific control function described above, instead of the control device that mainly controls the plate discharging operation. Providing low-priced, plate-removing device 150 and stencil printing device 100 that have the function of maintaining the confidentiality of a used master that has been discharged, with minimal cost increase due to changes. It is those that can be.

Based on the above configuration, the operation of the stencil printing apparatus 100 will be described.
First, the case of a normal print mode setting state (security release mode release state) will be described. In the normal print mode setting state, based on output signals from the standby position sensor 8 and the compression position sensor 10 so that the standby position becomes the home position of the compression plate 3 by a command signal from the control device 65 (CPU 66). Since the compression plate drive motor 12 is controlled, the compression plate 3 automatically returns to the standby position as its home position and occupies the standby position after completion of the predetermined plate discharging operation (compression operation). is there.
The user sets a document to be printed on the image reading unit 170, sets platemaking conditions using various keys on the operation panel 46, and then presses the platemaking start key 47.

When the plate-making start key 47 is pressed, a start signal is generated and this is used as a trigger. First, the used master 28 is peeled off from the outer peripheral surface of the plate cylinder 16 used in the previous printing in the plate discharging device 150. A series of discharging operations for discharging and compressing is performed.
The plate cylinder 16 on which the used master 28 is wound on the outer peripheral surface reaches a plate discharging position where the tip portion of the master 28 (portion sandwiched by the clamper 19) faces the plate discharging roller pair 1A. Is driven to rotate. When the plate cylinder 16 reaches the plate discharge position, the rotation of the plate cylinder 16 is stopped, and the plate discharge drive motor 11 (stepping motor) is started by a command from the control device 65 immediately before the clamper drive motor of the opening / closing means is started. Thus, the plate discharge roller pair 1A is started to rotate.

  Then, immediately, the clamper driving motor is driven, so that the clamper 19 is opened to the stage 19A at an angle larger than that at the time of feeding, and in conjunction with this, the tip of the master 28 is kicked up by the elastic thin plate. Operation is performed. As a result, the leading end of the master 28 is kicked up and released in the entire master width direction Y to be in a free state. In this state, the leading end of the master 28 is transferred to the discharge roller pair 1A.

  Then, by the rotating plate discharge roller pair 1 </ b> A, the opened front end portion of the master 28 is brought into contact with the elastic blade 2 </ b> Ba of the impeller 2 </ b> B and drawn into the nip portion between the upper plate discharge conveyance roller 2 and the lower plate discharge conveyance roller 1. The leading end of the master 28 is inserted into the plate discharge roller pair 1A, and the rotation operation of the plate discharging roller pair 1A elapses for a predetermined time (which is also a predetermined number of steps of the plate discharging drive motor 11). The leading end of the master 28 peeled off by a plate removal sensor (not shown) (for example, a reflection type optical sensor disposed in the vicinity of the plate discharge roller pair 1A) as a detection means for detecting the clamping is drawn into the nip portion. Is detected, the discharge roller pair 1A temporarily stops rotating. Thereafter, when the clamper 19 is closed by the operation of the opening / closing means, the plate cylinder driving motor is started immediately, so that the plate cylinder 16 is moved around the support shaft 18 as shown in FIG. 3 starts rotating in the direction of the arrow (clockwise), and at the same time, the plate discharge roller pair 1A is driven to rotate again in the direction of the arrow in FIG. While being peeled from the surface of the plate cylinder 1 while being sandwiched between the plate discharge conveyance roller 1 and the upper plate discharge conveyance roller 2 and being prevented from adhering to the upper plate discharge conveyance roller 2 by the impeller 2B, to the downstream side of the plate discharge path. It is conveyed.

At this time, the rotational speed of the discharge plate drive motor 11 is controlled by the control device 65 so that the rotational peripheral speed of the pair of discharge rollers 1 </ b> A exceeds the rotational peripheral speed of the plate cylinder 16. Then, the master 28 wound on the plate cylinder 16 is peeled and conveyed while tension is applied between both by the rotation of the plate cylinder 16 and the rotation of the plate discharge roller pair 1A.
During the conveyance of the master 28 by the rotational drive of the pair of discharge rollers 1A, the compression plate drive motor 12 remains stopped, the compression plate 3 is at the standby position, and the compression plate 3 is released from the security mode by the standby position sensor 8. It is detected that it occupies the standby position which is the home position at the time of. That is, when the used master 28 is conveyed by the pair of discharge rollers 1A, the protrusion 3a on the back side of the compression plate 3 shields the standby position sensor 8 provided on the unit side plate 9a on the back side. It occupies the standby position shown in FIG. 1 and FIG.

  In FIG. 1 and FIG. 2, the master 28 peeled and conveyed by the plate discharge roller pair 1A hits the stop wall 6f of the plate storage container 6 and then folded into a loose bellows shape while being folded into a loose bellows shape. It is discharged into the discharged plate storage portion 6a and onto the compression plate 3. When the controller 65 determines that approximately one plate of the master 28 on the plate cylinder 16 has been conveyed by the discharge roller pair 1A due to the rotational drive of the predetermined number of steps of the discharge plate drive motor 11, a command from the control device 65 The compression plate drive motor 12 (stepping motor) is started.

  When the compression plate drive motor 12 (stepping motor) is started, the compression plate 3 is swung in the counterclockwise direction indicated by an arrow in FIGS. The master 28 is stored while being compressed into the discharged plate storage portion 6 a of the discharged plate storage container 6. When the compression operation of the used master 28 for one plate is completed in this way, as shown in FIGS. 3 and 4, the rocking end point of the compression plate 3, that is, the compression position is the unit side plate 9a on the back side shown in FIG. The optical path of the compression position sensor 10 provided on the compression plate 3 is detected by the proximal end of the projection 3a on the back side of the compression plate 3 being shielded.

  When the compression plate 3 occupying the compression position is detected by the compression position sensor 10, the projections 3a on the front side and the back side of the compression plate 3 do not interfere with the swinging locus of the projection 3a. In the notch portions 6b formed in the side plates 6c and 6d of the plate-discharging storage container 6 provided on the plate, the disengagement direction Xa (see FIG. Leftward and upward movement is hindered by protrusions 3 a on both sides of the compression plate 3. That is, in a state where the compression plate 3 is in the compression position, the discharged plate storage container 6 cannot be detached from the apparatus main body 180.

  When it is determined that the plate cylinder 16 occupies a predetermined position and all the masters 28 are peeled off from the plate cylinder 16 and stored in the discharge plate storage container 6, the rotation of the discharge roller pair 1A and the plate cylinder 16 is stopped. . Thereafter, the free end of the compression plate 3 swings approximately 180 degrees clockwise toward the standby position sensor 8 and again occupies the home position, which is the standby position. Is rotated again, and when the plate cylinder 16 reaches the plate feeding position shown in FIG. 1 and the clamper 19 is opened as indicated by a two-dot chain line, the plate discharging operation is completed.

  When the plate discharging operation is completed, the image reading unit 170 performs a document reading operation. The read image is focused by the lens 43 and then input to the image sensor 44 and subjected to photoelectric conversion. The image sensor 44 sends the input image data to an A / D converter (not shown) and a plate making control unit.

  In parallel with the reading operation, the platen roller 25 and the thermal head 26 are operated in the plate making unit 130, and the plate making operation to the master 28 based on the image data is performed to form a plate making image. The master 28 that has been subjected to plate making is sent to the clamper 19 by two pairs of master conveying rollers that start rotating simultaneously with the platen roller 25, and it is determined from the number of steps of the stepping motor 29 that the tip of the master 28 has reached the clamper 19. Then, the clamper 19 is closed by the operation of the opening / closing means. Thereafter, the plate cylinder 16 is driven to rotate clockwise in FIG. 1 at the same rotational speed as the conveying speed of the master 28 that has been subjected to plate making, and the winding operation of the master 28 that has been subjected to plate making is performed. When the image data signal from the image reading unit 170 is interrupted, the operation of the thermal head 26 is stopped. Thereafter, when it is determined that the master 28 for one plate has been transported by plate making based on the number of steps of the stepping motor 29, plate making is completed. The conveyance of the master 28 is stopped, and the cutting means 27 is operated to cut the master 28. The cut master 28 is pulled out from the plate making section 130 by the rotation of the plate cylinder 16, and the plate cylinder 16 is stopped at the home position to complete the plate feeding operation.

  The printing operation is performed following the plate feeding operation. After the plate cylinder 16 stops at the home position, the plate cylinder 16 is driven to rotate at a low speed, and the paper feed roller 31, the separation roller 32, and the paper discharge transport unit 38 are driven to be positioned at the uppermost position from the paper feed tray 30. Only one sheet P to be fed is separated and fed, and the leading end of the sheet P is brought into contact with the nip portion of the registration roller pair 34, whereby a predetermined curved deflection is formed at the leading end portion of the sheet P. The registration roller pair 34 feeds the paper P to the plate cylinder 16 at a predetermined timing when the leading end of the image area in the plate cylinder rotation direction of the master 28 that has been wound around the plate cylinder 16 reaches the position corresponding to the press roller 17. And is fed toward the press roller 17. At substantially the same time, the press roller 17 swings as shown by the broken line in FIG. 1 and its peripheral surface is pressed against the outer peripheral surface of the plate cylinder 16 with a predetermined pressing force.

  The paper P is pressed by the press roller 17 against the master 28 that has been wound around the plate cylinder 16, so that the press roller 17, the paper P, the master 28 that has been made, and the plate cylinder 16 are in pressure contact with each other, and the ink supply means. 22, the ink supplied to the inner peripheral surface of the plate cylinder 16 oozes out from the opening portion of the porous support plate of the plate cylinder 16 and the mesh portion of the mesh screen, and the outer peripheral surface of the plate cylinder 16 and the master 28 that has been subjected to the plate-making process. After filling the gap with the porous support, it is transferred and transferred to the paper P through the perforated portion of the thermoplastic resin film, and so-called printing is performed. The paper P to which the ink has been transferred is peeled off from the outer peripheral surface of the plate cylinder 16 by the peeling action by the blowing air by the operation of the peeling blower fan 36 and the tip of the peeling claw 37 and falls downward, and the paper discharge transport unit 38. Is sucked and conveyed to the left and discharged onto the paper discharge tray 39. Thereafter, the plate cylinder 16 again occupies the home position and stops, and the plate making operation is completed, and the stencil printing apparatus 100 enters a print standby state.

  When the trial printing key 49 is pressed after the stencil printing apparatus 100 is in a print standby state, only the topmost sheet P on the sheet feed tray 30 is separated and fed as in the case of printing, and the registration is performed. While being sandwiched between the roller pair 34, the plate cylinder 16 is driven to rotate at a higher speed than at the time of printing. The registration roller pair 34 feeds the paper P at a predetermined timing between the plate cylinder 16 and the press roller 17 rotating at high speed in the same manner as described above, and the fed paper P is fed by the press roller 17 to the plate cylinder 16. After the ink is transferred to the master 28 wound around the paper, the ink is transferred onto the paper discharge tray 39 in the same manner as described above. The plate cylinder 16 is then returned to the home position again to complete the trial printing operation.

  The test print confirms the density of the print image and the print image position, adjusts these appropriately with the various keys on the operation panel 46, performs test print again, and sets the number of prints on the display device 58 using the numeric keypad 52. When a desired print speed is set with the print speed setting key 56 and the print start key 48 is pressed, the paper P is continuously fed from the paper feed unit 140 and printed with the numeric keypad 52. The printing operation for the number of sheets is repeated similarly to the paper feeding, printing, and paper discharging operations. When the set number of prints is consumed, the plate cylinder 16 returns to the home position and stops again, the printing operation is completed, and the stencil printing apparatus 100 enters the plate making standby state again.

Next, the operation of the stencil printing apparatus 100 when the confidentiality key 60 is used will be described. First, an operation example in which the confidentiality mode is set and no additional printing is performed, that is, a case where the master wound on the plate cylinder 16 is a used master 28 that needs to maintain confidentiality will be described.
In the same manner as described above, the user obtains a printed material through the steps of plate making, appropriately performed printing and trial printing, and printing. When the content of this printed matter requires confidentiality, users who should keep confidentiality (hereinafter simply referred to as “users”) who are in danger of leaking confidentiality to a third party, of course, must send the printed matter requiring confidentiality to the third party. In the same manner as described above, the plate making, plate-making, trial printing, and printing steps are performed in the same manner as described above. After completion of the printing operation to maintain confidentiality, the used master 28 wound on the plate cylinder 16 naturally has confidential information. Press the confidentiality key 60.

  When the confidentiality key 60 is pressed, a signal relating to the confidentiality mode setting is transmitted from the operation panel 46 to the CPU 66. The CPU 66 calls the security mode program from the ROM 68, writes the security mode program in the RAM 67, sends a command signal to the operation panel 46, and lights up and displays the LED built in the security key 60 to set the security mode. Tell the user that it is in a state. After writing the confidentiality mode program to the RAM 67, the CPU 66 sends an operation / command signal to the plate cylinder drive motor 69 in the main drive unit 70, so that the plate cylinder 16 stopped at the home position is detected. By performing the same operation as described in detail in paragraph “0049” of Japanese Patent No. 183238, that is, by a predetermined angle until the dog (25) is detected by the confidential mode position sensor (27) (Japanese Patent Laid-Open No. Hei 8- It is rotated by a distance L) in FIG.

  As a result, it becomes impossible to extract and remove the plate cylinder unit in which the plate cylinder 16 and the ink supply means 22 shown in FIG. 1 are substantially integrated in the extraction direction on the front side of the sheet. By removing and removing the plate cylinder unit including the plate cylinder 16, a situation in which confidentiality is leaked by performing printing using another stencil printing apparatus of the same type, or the used master 28 is peeled off from the plate cylinder 16 is removed. When the master itself is decrypted, the secret is leaked, or the master-making image of the used master 28 that is still wound around the plate cylinder 16 (usually a mirror image but a normal image in a double-sided printing device or the like). In some cases, it is also possible to prevent the collection of confidential information such as viewing confidential information itself or transferring it to paper.

At the same time that the plate cylinder unit cannot be detached from the apparatus main body 180, an operation unique to the present invention is performed. That is, the compression position is set to the home position of the compression plate 3 by the command signal from the CPU 66 based on the output signal related to the security mode setting from the security key 60 and the output signals from the standby position sensor 8 and the compression position sensor 10. The compression plate drive motor 12 is controlled so that
Thus, the front and back projections 3a of the compression plate 3 are formed on the side plates 6c and 6d of the plate discharge storage container 6 provided so as not to interfere with the swinging locus of the projection 3a. Since each cutout portion 6b is in an engaged / fitted state, the detachment direction Xa (leftward in the drawing) and upward movement of the discharged plate storage container 6 are caused by the protruding portions 3a on both sides of the compression plate 3. Is hindered by In other words, in a state where the compression plate 3 is in the compression position, the discharged plate storage container 6 cannot be detached from the unit base 7 which is the device main body of the plate discharging device 150 and from the device main body 180 of the stencil printing apparatus 100. Therefore, the compressed used master 28, which is the previous print information stored and accumulated in the discharge plate storage section 6b of the discharge plate storage container 6, is taken out from the discharge plate storage container 6 and decoded, or It is possible to reliably prevent a third party or an unspecified number of people from knowing by transferring, and the confidentiality is not leaked.

Therefore, even if the power switch of the stencil printing apparatus 100 is turned off, the security mode program is retained by the RAM 67, so that the same or a confidential member who knows to release the security mode, for example, is to be released. Unless the mutual users cancel the confidentiality mode, the confidentiality mode setting state is maintained.
Thereafter, when the user presses the print start key 48 or the trial printing key 49, a signal is sent from the operation panel 46 to the CPU 66. The CPU 66 recognizes that the confidential mode program is written in the RAM 67, and the main drive unit. Since no command signal to be operated is output to each of the control target drive means in 70, the stencil printing apparatus 100 does not perform the printing operation and the trial printing operation under the control of the CPU 66.

  When the print start key 48 or the trial printing key 49 is pressed and a signal is input from the operation panel 46, the CPU 66 sends a signal to the operation panel 46 and causes the display device 59 to display a message indicating that printing is not possible. This confidentiality mode state is continued until the confidentiality mode is canceled by the above-described confidentiality mode canceling means. Since the RAM 67 is a backup memory as described above, it goes without saying that the confidentiality setting state is maintained even after the power switch for supplying power to the stencil printing apparatus 100 is turned off.

Next, an example of an operation for performing additional printing by setting the security mode using the security key 60, that is, the master 28 that has been pre-printed that requires the master wound on the plate cylinder 16 to maintain security. A case where
There is a case where it is desired to perform additional printing after the printing operation for a predetermined number of prints to be kept confidential is completed. In such a case, in order to cancel the confidentiality mode setting state, the user uses a combination of the numeric keypad 52 and the enter key 53 as the confidentiality mode canceling means. After pressing “6, 7, 8, 9” in this order, pressing “Enter key 53” to confirm and set “6, 7, 8, 9” will cause the CPU 66 to release the confidentiality mode from the operation panel 46. A signal is transmitted. As a result, the CPU 66 erases the confidential mode program written in the RAM 67, turns off the LED built in the confidentiality key 60, and displays that the confidentiality mode is released, and the main drive unit By sending the operation / command signal to 70, the control target drive means of the printing unit 120, paper feed unit 140, and paper discharge unit 160 of the stencil printing apparatus 100 are controlled, so that an additional printing operation is possible. Become.

As described above, the user sets the number of prints on the display device 58 with the numeric keypad 52, sets the print speed with the print speed setting key 56, and presses the scaling key or the like as appropriate according to the desired printed matter. By pressing 48, the paper feeding, printing, and paper ejection processes are repeated for the number of additional prints set and set in the same process as the above-described plate printing and test printing, and all the processes of stencil printing are completed. To do. After the printing operation is completed, the plate cylinder 16 returns to the home position again. After completion of the additional printing operation that should maintain confidentiality, the used master 28 wound on the plate cylinder 16 has confidential information as a matter of course, so that the user should perform additional printing operation that should maintain confidentiality. After the completion, the confidentiality key 60 is pressed again.
When the used plate storage container 6 is filled with the used master 28 compressed by the compression plate 3, the control means 65 (CPU 66) having an internal timer having the function of the full detection means causes the compression plate 3 to wait. When the time required from the position to the compression position exceeds a predetermined time, it is detected that the container is full and a command signal is sent to the display device 59. The message “Please discard this because it is full.” Is displayed, and the user sees the display and discards the used master 28 that has been compressed in the discharge container 6.

That is, when in the confidentiality mode setting state, in order to cancel this, the user depresses the numeric keypad 52 and the enter key 53 to generate an output signal related to the password and transmit it to the CPU 66. Based on the output signal relating to the code code and the output signals from the standby position sensor 8 and the compression position sensor 10, the CPU 66 turns the compression plate drive motor 12 into a position where the standby position becomes the home position of the compression plate 3. Sends operation / command signals. As a result, the projections 3a on the front side and the back side of the compression plate 3 are swung from the notches 6b of the side plates 6c and 6d to be released from the engaged / fitted state. Can be detached from the apparatus main body 180 in the separation direction Xa (left side in the figure) by holding the handle 6e of the plate storage container 6.
At this time, the user must perform incineration processing or other appropriate processing that does not leak confidential information because the compressed used master 28 in the discharged-plate storage container 6 contains confidential information. Needless to say.
As described above, in the present embodiment, it can be said that the plate removing method of claim 7 and the printing method of claim 9 described in the section for solving the problems are used.

Therefore, according to the present embodiment, there is no need for special locking means, the size of the apparatus is increased with a simple configuration, and the plate is removed from the apparatus main body 180 in a state in which the cost increase is minimized. A plate discharging apparatus 180, a plate discharging method, a stencil printing apparatus 100, and a stencil printing method capable of preventing the storage container 6 from being detached and preventing leakage of confidential information of a used master 28 in the plate discharging storage container 6 are provided. Can be provided.
According to the present embodiment, the compression plate 3 can swing around the rotation shaft 4, and the attaching / detaching direction of the discharged plate storage container 6 is set in a direction substantially orthogonal to the axial direction of the rotation shaft 4. Thus, for example, it is possible to provide a low-end (low-cost) plate discharging apparatus 150 and a stencil printing apparatus 100 in which it is impossible to dispose a lock mechanism using the drive coupling of the compression member itself.

According to the present embodiment, the compression plate 3 is disposed on the apparatus main body 180 side separately from the plate discharge storage container 6, so that, for example, the drive coupling of the compression means is used as a lock mechanism. It is possible to provide a low-end (low-cost) plate discharge device 150 and stencil printing device 100 in which the compression unit and the plate storage unit do not form an integral unit.
According to the present embodiment, when the compression plate 3 occupies the compression position, the detachment prohibiting means engages with the pair of notch portions 6b as recesses formed in a part of the discharged plate storage container 6. By having the pair of protrusions 3a as convex portions formed on a part of the compression plate 3, it is possible to provide the plate discharging apparatus 150 and the stencil printing apparatus 100 at a lower cost with a simpler configuration. In this embodiment, the protrusion 3a of the compression plate 3 also serves as a detection member (light-shielding plate) detected by the standby position sensor 8 and the compression position sensor 10 as position detection means, thereby suppressing an increase in cost. Working favorably.
According to the present embodiment, the pair of cutout portions 6b as the recesses are formed with a recess along a direction substantially perpendicular to the attaching / detaching direction of the discharged plate storage container 6, and thus the simplest configuration and the lowest price. The plate discharging apparatus 150 and the stencil printing apparatus 100 can be provided.

According to the present embodiment, the compression plate 3 is set to return to its home position when, for example, the discharge plate compression operation is completed, and when the security mode is set by the security key 60, the compression plate 3 is compressed. When the security mode is not set so that the position becomes the home position, the compression plate drive motor 12 is controlled based on the output signals from the standby position sensor 8 and the compression position sensor 10 so that the standby position becomes the home position. By having the control device 65 (CPU 66) and the like to control, the release plate storage container 6 can be prevented from being detached from the apparatus main body 180 only by setting the confidentiality mode. Unauthorized acquisition of stored confidential information of used master 28 to prevent it from being decrypted or transferred, The used master 28 in 6 confidential information leakage can be provided a stencil discharging apparatus 150 and the stencil printing apparatus 100 can be prevented.
According to the present embodiment, by using the above-described plate discharging apparatus 150, the removal of the used master 28 in the plate discharging storage container 6 can be prohibited, so that it is possible to provide an example of a plate discharging method that exhibits the above-described effects. .
According to the present embodiment, by using the stencil printing apparatus 100 to prohibit the removal of the used master 28 in the discharged plate storage container 6, it is possible to provide an example of a printing apparatus that exhibits the above-described effects.

  In the above-described embodiment, as the discharged plate storing means and the compressing means, the compression plate 3, which is a simple and low-cost compression member, swings around the rotation shaft 4, and is used in the discharged plate storage container 6. However, if it is not necessary to have the advantages and effects, the compression member (compression plate) is moved up and down in the vertical direction to store the discharged plate storage means. A known type of compressing a used master may be used, and applying the invention thereto is only a design matter that can be easily made by those skilled in the art.

  In Japanese Patent Application No. 2003-392645, the applicant of the present application is provided with a printing drum around which a prepressed plate is wound, a drum unit that is detachable from the apparatus main body, and an original reading unit that reads an image of the original. The apparatus main body includes a reading unit that can be opened and closed, a plate making means for making a plate, a plate making unit that is detachable from the apparatus main body, and a storage means that stores a used plate peeled from the printing drum. On the other hand, in a printing apparatus having at least one unit other than the drum unit alone among the detachable plate discharging unit, information on the pre-printed plate on the printing drum and information on the printed matter other than those who perform printing A security mode setting means for setting a security mode when it is not desired to be known, and the function by the security mode setting means. A printing apparatus comprising: a locking unit arranged for each of the at least one unit for preventing the at least one unit from being detached from the apparatus main body when the holding mode is set. Such technology was proposed.

According to this technology, the master and ink are not wasted because a new unfinished master is wound around a printing drum (plate cylinder), and regardless of the layout depending on the type of printing apparatus. Since the confidential information of the plate on the plate cylinder (printing drum) cannot be viewed or transferred, the confidential information can be prevented from being leaked to the outside, and the confidentiality can be reliably maintained. It was a thing.
Therefore, if it is not necessary to raise the cost of the entire stencil printing apparatus as much as a problem, instead of the plate discharging lock mechanism (89) as the locking unit of the plate discharging unit (82) in the Japanese Patent Application No. 2003-392645, The detachment prohibiting means of this embodiment may be adopted. That is, by applying a combination of the above-described technique from which the plate-release lock mechanism (89) is removed and the detachment prohibiting means of the present embodiment, it is wound around the plate cylinder 16 by a third party who is in danger of leaking confidential information. It is possible to completely prevent the master 28 from being confirmed by viewing or transferring the used master 28 stored and stored in the discharged-plate storage container 6, including the master 28.

It is a front view of the principal part of the whole stencil printing apparatus which shows one Embodiment of this invention. FIG. 2 is an enlarged front view showing a partially broken configuration and operation around a plate discharging apparatus in the stencil printing apparatus of FIG. 1. FIG. 3 is a partially cutaway front view showing a state where a compression plate occupies a compression position in the plate discharging apparatus of FIG. 2. FIG. 3 is a perspective view of a main part showing a state where a compression plate occupies a compression position in the plate discharging apparatus of FIG. 2. FIG. 3 is an exploded perspective view showing an operation state in which the discharged plate storage container is detached from the apparatus main body in the discharged plate apparatus of FIG. 2. It is a top view of the operation panel used for this embodiment. It is a block diagram which shows the control structure of the principal part of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A Plate discharge roller pair 3 as a plate discharge conveyance means Compression means, Compression plate 3a as a compression member Projection 4 as a convex portion constituting a detachment prohibiting means Rotating shaft 6 Plate discharge storage container 6b as a stencil storage means Structure constituting a detachment prohibiting means Notch portion 8 as concave portion to be held Standby position sensor 10 as position detection means Compression position sensor 12 as position detection means Compression plate drive motor 16 as compression drive means Plate cylinder 17 Press roller 22 as press means Ink supply means 28 Master 52 Numeric Keypad 53 Constructing Confidentiality Mode Canceling Means Enter Key 60 Constructing Confidentiality Mode Canceling Means Confidentiality Key 65 as Confidentiality Mode Setting Means Control Device 66 as Control Means CPU Constructing Control Means
67 RAM constituting control means
68 ROM constituting the control means
100 Stencil Printing Device 150 as an Example of Printing Device
180 Device main body P Paper Xa Removal direction of discharged plate storage container

Claims (9)

By means of a plate discharging transport means for peeling and transporting a used master on the plate cylinder, a plate discharging storage means detachably attached to an apparatus main body for storing the used master transported by the plate transporting means, and the plate discharging transport means A plate discharging apparatus comprising: a compression unit that selectively occupies a standby position that does not interfere with a used master conveyance path and a compression position that compresses the used master into the plate storage unit;
When the compression means occupies the standby position, the compression means and the discharged plate storage means do not engage with each other, and the removal of the discharged plate storage means from the apparatus main body is permitted, and the compression means sets the compressed position. A plate discharging apparatus comprising: a disengagement prohibiting means for prohibiting the disengagement of the discharged plate storage means from the main body of the apparatus by engaging the compression means and the discharged plate storage means when occupied. The plate discharging apparatus according to claim 1,
The compression means has a compression member that can swing around a rotation shaft, and the attaching / detaching direction of the discharged plate storage means is set in a direction substantially orthogonal to the axial direction of the rotation shaft. Plate removal equipment. In the plate discharging apparatus according to claim 1 or 2,
The plate discharging apparatus is characterized in that the compression means is disposed on the apparatus main body side separately from the plate discharging storage means. In the plate discharging apparatus according to claim 1, 2, or 3,
The detachment prohibiting means is formed in a concave portion or a convex portion formed in a part of the discharged plate storing means and a part of the compressing means engaged with the concave portion storing means when the compressing means occupies the compression position. A plate discharging apparatus having a convex portion or a concave portion. In the plate discharging apparatus according to claim 4,
2. The plate removing apparatus according to claim 1, wherein the recess is formed with a recess along a direction substantially perpendicular to a direction in which the plate storing means is attached and detached. The plate discharging apparatus according to any one of claims 1 to 5,
The compression means is set to return to its home position;
A confidentiality mode setting means for setting a confidentiality mode when it is not desired to know the information of the used master in the discharged-plate storage means;
Compression driving means for driving the compression means;
Position detection means for detecting at least one of the standby position and the compression position;
When the security mode is set by the security mode setting means, the compression position is the home position, and when the security mode is not set, the standby position is the home position. And a control unit that controls the compression drive unit based on an output signal from the position detection unit.   7. A plate discharging method using the plate discharging apparatus according to claim 1, wherein removal of a used master in the plate storage unit can be prohibited.   A plate discharging apparatus according to any one of claims 1 to 6, the plate cylinder, and ink supply means for supplying ink to a master on the plate cylinder, and directly to the master on the plate cylinder A printing apparatus that performs printing on a printing sheet by pressing the printing sheet manually or indirectly.   9. A printing method using the printing apparatus according to claim 8, wherein removal of a used master in the discharged-plate storage means can be prohibited.

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