JP2003182200A - Platemaking apparatus and platemaking printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a master is bitten with peripheries of upper and lower rotary cutters in a state in which rising of the master near an opening of a flexible box is collapsed at the master cutting time, and thereby movement of an overall holder having the upper and lower rotary cutters is stopped to a cutter locking state so that a printer is stopped. <P>SOLUTION: A controller 120 controls to reversely rotate a cutter motor 219 so as to return the holder 213 to an initial position while an output signal from a home position sensor 52 is referred when the holder 213 is judged to be a locked state; then controls to drive to forward rotate a master conveying motor 24 by a master set roller 19, a platen roller 23, tension roller pair 26 and a destaticizing roller 27; and thereafter controls to drive to forward rotate the cutter motor 219 so as to cut the master 16 by reciprocating the holder 213. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate making apparatus and a plate making printing apparatus having this plate making apparatus.

[0002]

2. Description of the Related Art A heat-sensitive digital plate-making type stencil printing device is known as a plate-making printing device. In this heat-sensitive digital plate-making stencil printer, for example, a very thin thermoplastic resin film having a thickness of 1 to 2 μm and a porous support (base)
As a master, a heat-sensitive stencil master (hereinafter referred to as "master") made by laminating natural fibers such as Japanese paper, synthetic fibers, or a mixture of natural fibers and synthetic fibers is prepared by a plate making means such as a thermal head. A plate-making device is provided to convey and feed the formed master so as to wind it around a porous cylindrical plate cylinder.

In the current plate-making apparatus, the plate-making speed has been increased and the space has been saved, and along with this, the master conveyance path has become complicated from a simple straight one.
For example, a specific example will be described with reference to FIGS. 2 and 3 to be described later, as shown in FIGS.
In order to convey the master 16 that has been prepressed through the bending box 32 having the bending ducts 33a to 33c switched in three stages, two suction fans 34a having the same suction capacity are provided on the inner side of the bending box 32. In addition to 34b,
Further, suction fans similar to the suction fans 34a and 34b are arranged in the central portion in the master width direction (three suction fans in total).
Then, the master 16 which has been prepressed is assisted to be transported, and the master is transported. The flexible box 32 is provided below the master transport path XR in order to save space in the height direction, that is, in the upward direction due to layout restrictions for downsizing the stencil printing apparatus and plate making apparatus. .

[0004]

However, the suction fan alone cannot overcome the rigidity of the masters themselves or the frictional resistance between the masters, so that the masters that have been plate-prepared are not transferred to the entrance of the bending box. , A master transport jam occurred due to a problem such as when disconnecting the master. Here, with reference to FIG. 15, the above-mentioned trouble phenomenon will be described in a somewhat simplified manner. In FIGS. 15A to 15C, reference numeral 16 indicates a master. The master 16 has a laminated structure composed of, for example, a polyester-based thermoplastic resin film (hereinafter sometimes simply referred to as a “film”) and natural fibers of Japanese paper serving as a base, which are bonded together. Reference numeral 16a indicates a film surface on the film side, and reference numeral 16b indicates a Japanese paper fiber surface on the base side. Reference numeral 28 indicates a cutter unit as a cutting means for cutting the master 16.

The cutter unit 28 is a publicly known one that cuts the master 16 by moving a pair of upper and lower rotary blades in a master width direction orthogonal to the master transport direction X, for example, Japanese Patent Laid-Open No.
This is the same as the cutting means (4) shown in FIGS. That is, the cutter unit 28 is similar to that shown in FIGS.
(C), as shown by borrowing FIGS. 4 and 5 described later,
A frame 212 as a cutting means main body that extends in the master width direction Y orthogonal to the master conveyance direction X and also serves as a conveyance guide for the master 16, and a pair of upper and lower portions that are partially rotatable at opposite edges and overlap each other. Rotary blades 216a, 21
6b and has a master width direction Y across the master conveyance path XR.
A holder 213 as a cutter member movably supported by the frame 212 so as to reciprocate in the direction of the upper and lower rotary blades 216a while reciprocating the holder 213 in the master width direction Y;
It is mainly composed of a rotation moving means 214 for rotationally driving 216b.

In FIGS. 15A to 15C, reference numeral 29 is a master tip sensor for detecting the trailing edge of the master 16 and the tip of the master 16 cut by the cutting operation of the cutter unit 28. Reference numeral 213a indicates an upper blade holder that rotatably supports the disc-shaped upper rotary blade 216a, and reference numeral 213b indicates a lower blade holder that rotatably supports the lower rotary blade 216b having the same shape as the upper rotary blade 216a. Reference numeral 213c is provided in the holder 213 and is provided in each holder 213.
The connection part which connects a and 213b integrally is shown. Holder 21
3 comprises an upper blade holder 213a, a lower blade holder 213b and a connecting portion 213c, which are movably supported by the frame 212.

The upper blade holder 213a includes an upper rotary blade 216a.
Further, the upper roller 217a made of a high friction resistance member integrally provided coaxially therewith is rotatably supported. The upper rotary blade 216a is disposed at a position where a part of its blade surface overlaps the lower rotary blade 216b, and the upper roller 2
The peripheral surface of 17a is in contact with the upper surface 212a so as to sandwich the upper surface 212a with the lower roller 217b. The lower blade holder 213b rotatably supports a lower rotary blade 216b at the downstream end of the master transport direction X and a lower roller 217b formed integrally with the lower rotary blade 216b and coaxially with the lower rotary blade 216b. . The peripheral surface of the lower roller 217b is in contact with the inner wall surface of the upper surface 212a.

Reference numeral 218 indicates a bidirectional feed screw which constitutes the rotational movement means 214. The frame 212 is provided with a rotation moving means 214. Rotational movement means 214
Is mainly composed of a bidirectional feed screw 218, a cutter motor 219 as cutting drive means, and the like. Reference numeral 221
Indicates a guide member disposed upstream of the cutter unit 28 in the master conveyance direction. Guide member 221
Is composed of a guide member main body 221a, one end of which is fixed to an immovable member (not shown), and a guide piece 221b attached to the other end of the guide member main body 221a. The guide piece 221b is formed of an elastic body such as a metal thin plate or a resin thin plate, and is located above the master 16 during stand-by for plate making and during plate making conveyance, and its free end moves when the holder 213 moves. It is arranged at a position to enter between the holder 213a and the upper surface 212a. In addition, when the upper blade holder 213a is moved, the guide piece 2
An inclination for guiding 21b between the upper blade holder 213a and the upper surface 212a is formed at the tip portion in the moving direction.

With the above structure, when the holder 213 moves in the master width direction Y along the frame 212, the rollers 217a and 217b rotate in the opposite directions along with the movement, and are integrated with the rollers 217a and 217b. The upper rotary blades 216a and the lower rotary blades 216b provided on the above rotate in opposite directions.

The cutter unit 28 has a height similar to the reason for disposing the flexible box 32 described with reference to FIG. 3, particularly because of layout restrictions for downsizing the stencil printing apparatus and the plate making apparatus. In order to save space in the upward direction by suppressing the above, and by cutting while holding the master by the pair of upper and lower rotary blades, it is possible to prevent lifting, deformation, escape, etc. of the master as much as possible,
It is arranged because it is cheaper than other cutting means, has good operability during the jam processing of the master, and has an advantage that a clean and reliable cutting can be performed. In comparison with this, a so-called guillotine type cutting means which is one of the other cutting means, that is, a cutting means including a fixed lower blade fixed to the master transport path and a movable upper blade that can be moved up and down Requires a driving means such as a cam for moving the movable upper blade up and down with respect to the master transport path in the vertical direction above the fixed lower blade, and it is not possible to suppress the height and save space. Since the point requires a highly accurate movable upper blade and fixed lower blade that are even wider than the width of the master, the cost will increase, and the space between the movable upper blade and the fixed lower blade will increase. Since it is extremely narrow, the operability of the master during jam processing is significantly reduced, and it is becoming less adopted.

In FIGS. 15 (a) to 15 (c), in a bending box (not shown), the plate-making master 16 forms a downward bending bulge 16C by the suction action of the suction fan. When a predetermined amount of the plate-made master 16 is stored in the bending box, the master plate can be fed, and the reversing roller pair 40 starts to rotate in the direction of the arrow in the drawing during the master plate feeding. The leading end of the master 16 is fed toward a clamper, which is not shown, in which the plate cylinder is opened and which is in a standby state. At this time, by the rotation and conveyance of the pair of reversing rollers 40,
The master 16 on the feed side that is conveyed to the vicinity of the inlet of the bending box due to the frictional resistance between the Japanese paper fiber surfaces 16b of the master 16 that are in contact with and rub against each other around the inlet (opening) of the bending box or inside the bending box. It is raised and it gets excited.

The swelling of the master 16 that has been prepressed is roughly classified into three, as shown in FIGS. 15 (a) to 15 (c), depending on the size thereof. FIG. 15A shows
The rising 16D indicates a large state. In this state, when the master is cut, the upper rotary blade 216a passes under the bulge 16D, resulting in a cut error. When the above-mentioned cut error occurs, even if a predetermined time has elapsed from the time when the cutter motor 219 shown in FIG. , The machine was stopped because an error was displayed on the display of the operation panel.

Further, although the cutting operation (hereinafter referred to as "cutting operation") is performed, the rear end of the master 16 which has been plate-making is not actually cut, so that the reversing roller remains in the state where the above-mentioned cut error occurs. When the pair of 40 conveys and feeds to the outer peripheral surface (plate cylinder) of the printing drum, the master 16 that has been plate-making is wound around the plate cylinder in a bent or overlapping state. And the like (pressing means). For example, if an A3 size master of 1 plate is wound around the plate cylinder in a state of being folded in half, the mesh screen is exposed at the rear end of the plate cylinder. The printing paper sticks due to the force, and the trailing edge of the printing paper rolls up on the plate cylinder, resulting in a paper discharge jam. Further, in this case, when the A4 size printing paper is passed in the lateral direction, that is, the lateral printing is performed, the impression cylinder, the press roller and the like are contaminated with ink. In the worst case, the master 16 that has been prepressed may be wound around the plate cylinder in a double wound state. In such a case, the printing drum itself is stopped / locked due to the load. , It also caused the machine to stop.

FIG. 15B shows a state in which the bulge 16D is inside. In this state, when the height of the swelling 16D is about the same as the central portion of the upper rotary blade 216a when the master is cut, the master 16 that has been plate-made in the swelling 16D is crushed and crushed to the top. -Because the lower rotary blades 216a and 216b are bitten around, the entire holder 213 stops moving and becomes locked (hereinafter, referred to as "cutter lock"), or the upper and lower rotary blades of the cutter unit 28. In some cases, 216a and 216b were damaged. When the cutter lock or the like occurs, the holder 213 does not return to the home position even after a lapse of a predetermined time from the starting time of the cutter motor 219 shown in FIG. 4, and the cut master 16 after the plate making is cut off. Since the end is not detected by the master front end sensor 29, an error is displayed on the display unit of the operation panel or the like, and the machine is stopped.

According to the cutter unit 28, although the above-mentioned remarkable advantages are obtained, the upper and lower rotary blades 216 are provided.
There is a problem in the durability of a and 216b. That is, when the upper and lower rotary blades 216a and 216b become less sharp,
The frequency of occurrence of the cut error shown in FIG. 5 (a) and the cutter lock shown in FIG. 15 (b) is extremely increased.

FIG. 15C shows a state in which the swelling 16D is small because the Washi paper fiber surfaces 16b of the master 16 do not contact and rub each other, or the contact area or contact time is extremely small. And belongs to the normal master transport state. In this state, problems such as cut mistakes and cutter lock do not occur.

Further, when the sticking of the master due to static electricity occurs in the plate making device, when the master is caught in the conveying path, or when the master is not fed, the tip of the master moves from the inside of the plate making device to the plate cylinder. When the plate is not fed to the clamper, the master tip is fed from the plate making device to the clamper, but the master tip is not clamped properly to the clamper due to the skew of the master. If a clamping error occurs, the following problems will occur. That is, FIG.
In other words, the master 16 is not actually conveyed due to a step out of the master conveyance motor 24 (stepping motor) or the plate feeding motor 41 (stepping motor) for conveying the master 16. However, the controller (not shown) determines that the master 16 has been conveyed to the specified feed amount, and the holder 213 performs the cutting operation. As a result, the master 16 is cut off at the place where it is actually sent.
The cut pieces (hereinafter referred to as “master pieces”) were generated, and it was difficult to process the master pieces.

Particularly, in the flexible box 32 described with reference to FIG. 3, the plate-making master 16 is folded back into three stages and stored, so that the contact area between the Japanese paper fiber surfaces 16b of the plate-making master 16 is increased. Since it becomes larger, the degree of occurrence of cut mistakes, cutter locks, clamp mistakes, and the like increases. The above-mentioned cut mistakes at the time of master cutting, cutter lock and clamp mistakes are one of the causes of the jam of the master conveyance.

Problems such as cut mistakes, cutter locks, and clamp mistakes have a movable upper blade and a fixed lower blade, and the movable upper blade is fixed, as disclosed in, for example, Japanese Patent Publication No. 7-84086. One that moves while rotating in the master width direction with respect to the lower blade, as disclosed in Japanese Utility Model Publication No. 3-40556, has only a movable upper blade that moves while rotating with respect to the master 16. It occurs even if it does. The cut mistakes shown in FIG.
The cutter lock shown in (b) is merely an example of a specific problem phenomenon, and the cutter lock shown in FIG.
It goes without saying that problems other than the cut mistakes and cutter locks shown in (4) will also be issues to be solved.

The problem of the occurrence of defects such as cutting mistakes, cutter locks, and clamping mistakes is that the film surface of the master is wound on the master roll, that is, the so-called film in-plane winding occurs. For example, in a low-humidity environment, even if the master is a so-called film-outside film (the film is wound on a master roll with the film surface of the master being outside), the film surfaces stick to each other due to the influence of static electricity and the above-mentioned swelling occurs. 16D
(Large, Medium) may occur. On the other hand, the swelling 16 due to the Japanese paper fiber surfaces 16b of the master 16
D occurs regardless of the environment.

The conventional plate-making apparatus and plate-making printing apparatus do not have a recovery function when a failure such as a cut error, cutter lock or clamp error occurs, and the machine (plate-making apparatus or plate-making printing apparatus) sometimes stops. It was difficult and inconvenient to deal with the master fragments, and the expensive masters that were plate-made were wasted.

Therefore, the present invention has been made in order to solve the above-mentioned problems in view of the above-mentioned circumstances, and reduces troubles such as a jam occurrence due to a cutting error, a cutter lock or a clamping error, and waste of a master. A first object of the present invention is to provide a plate-making apparatus and a plate-making printing apparatus that can reduce the above-mentioned problems. A second object of the present invention is to provide a plate-making apparatus and a plate-making printing apparatus in which the recognizability (visibility etc.) of a master fragment is improved and a jam process can be easily performed when a clamping error occurs. A third object of the present invention is to provide a plate making apparatus and a plate making printing apparatus that can easily perform jam processing by clearly notifying (displaying, etc.) where the jammed master is.

[0023]

In order to solve the above-mentioned problems and to achieve the above-mentioned objects, the invention according to each claim adopts the following characteristic means and configurations. Claim 1
The invention described is a plate making means for making a master capable of feeding, a carrying means for carrying the master made by the plate making means to the downstream side in the master carrying direction, a carrying driving means for driving the carrying means, Driving means for driving the cutting means, which is provided on the downstream side of the plate making means and has at least one rotary blade for cutting the master by moving in the master width direction orthogonal to the master carrying direction. In the plate making apparatus having the cutting drive means, the position detecting means for detecting the position of the rotary blade is provided on the cutting drive means side. Here, "a plate making apparatus having a position detecting means for detecting the position of the rotary blade" corresponds to the superordinate concept of the invention according to claim 1. In this superordinate concept invention, the position detection means for detecting the position of the rotary blade is not limited to being provided on the cutting drive means side, and it may be provided, for example, on the rotary blade side. In such a case, however, the position detection means Since the arrangement configuration and the like of the above item becomes complicated, it is preferable to provide the above configuration from the viewpoint of avoiding this. Further, the “cutting drive unit side” includes not only the cutting drive unit itself but also the vicinity and the periphery thereof, and further includes the printing device main body side near and around the cutting drive unit.

According to a second aspect of the present invention, in the plate making apparatus according to the first aspect, the position detecting means is an incremental type pulse encoder having an encoder sensor,
And a home position detecting means for detecting an initial position of the rotary blade.

According to a third aspect of the present invention, in the plate making apparatus according to the first aspect, the position detecting means has an absolute type pulse encoder having a plurality of encoder sensors. In Claims 2 and 3, an optical pulse encoder (photoencoder) is preferable from the standpoint of stabilizing the detection performance and increasing reliability, but if this is not desired, a magnetic encoder And so on.

The invention according to claim 4 is the invention according to claim 2 or 3.
The plate making apparatus described above is characterized by further comprising control means for determining a locked state or the like of the rotary blade based on the number of pulses output from the encoder sensor.

According to a fifth aspect of the present invention, in the plate making apparatus according to the fourth aspect, the rotary blade is capable of reciprocating in the master width direction from its initial position as a starting point, and the cutting drive means is a forward / reverse rotation. When it is determined that the cutting means is in the locked state, the control means reversely drives the cutting drive means so that the rotary blade returns to the initial position, and then the master is operated by the transport means. The transport drive means is driven so as to be transported again downstream in the master transport direction, and then the cutting drive means is normally driven so that the rotary blade moves forward to cut the master. And

According to a sixth aspect of the present invention, in the plate making apparatus according to the fifth aspect, the feed amount of the master to which the master is conveyed again varies depending on the lock position of the rotary blade.

The invention according to claim 7 is the invention according to claim 5 or 6.
In the plate making apparatus described above, a master detection means for detecting the trailing end of the cut master provided on the downstream side of the master conveyance direction with respect to the cutting means, and a cut mistake notification means for notifying a cut mistake or the like of the master. Having the control means, after the cutting drive means is driven in the normal direction, and when the master detection means does not detect the rear end of the master, it is determined that a cut error has occurred, and the cut error notification means is provided. It is characterized by notifying the master of cut mistakes and the like. here,
The cut error notification means includes a cut error display means for displaying and notifying and a means for notifying by sound or voice. Specific examples of the cut error display means include a guidance section and an auxiliary display section of a liquid crystal display section using an LCD (liquid crystal display device) adopted in an embodiment described later, and as means for notifying by sound or voice, For example, there is a buzzer. Therefore, the cut error notification means may be appropriately selected from the above-described cut error display means or means for notifying by sound or voice, or a combination thereof may be used.

The invention according to claim 8 is the invention according to claim 5 or 6.
In the plate making apparatus described above, the master detecting means is provided downstream of the cutting means in the master transport direction to detect the trailing end of the cut master, and the control means is a normal rotation of the cutting drive means. After driving, when the master detection means does not detect the trailing edge of the master, it is determined that a cut error has occurred, and the transport means drives the master again to the downstream side in the master transport direction. Is driven, and then the cutting blade is driven in the forward direction so that the rotary blade moves forward again to cut the master.

The invention according to claim 9 is the invention according to claim 5 or 6.
In the plate making apparatus according to the description, there is a master detection unit that is provided on the downstream side of the cutting unit in the master conveyance direction and detects the trailing end of the cut master, and the conveyance unit is the upstream side of the master conveyance direction. It is possible to transfer the master to the rear end of the master, and the transfer drive means can rotate in the forward and reverse directions. If it is not detected, it is judged as a cut error, and after the conveyance driving means is reversely driven so that the master is conveyed to the upstream side in the master conveyance direction by the conveyance means, the rotary blade moves forward again. The cutting drive means is driven to rotate normally so as to cut the master.

According to a tenth aspect of the present invention, in the plate making apparatus according to the ninth aspect, there is provided notifying means for notifying that the master cut piece is present in the plate making apparatus, and the control means is characterized in that the rotary blade is After going back again to cut the master, the informing means is informed that the cut piece of the master is in the plate making apparatus.

The invention described in claim 11 is, in the plate making apparatus according to any one of claims 1 to 10, a master storing means for storing the master made by the plate making means, and a master storing means. A blower means provided near the entrance of the master to prevent the rise of the master by blowing air, and the rotary blade moves in the master width direction to cut the master while blowing air by the blower means. A cutting drive control means for controlling the cutting drive means.

According to a twelfth aspect of the present invention, in the plate making apparatus according to the eleventh aspect, the master storage means stores a flexure box for forming a flexure in a master that has been made, and a plate provided in the flexure box. A suction fan that sucks air in the flexible box to form a flexure in the master, and the blower means is a non-contact blowing fan for the master near the inlet, and the blowing fan and the suction fan. Can be controlled independently of each other, and the control can be changed under predetermined conditions.

According to a thirteenth aspect of the present invention, in the plate making apparatus according to any one of the first to twelfth aspects, a plate feeding means for feeding the plate-made master and a plate feeding means for driving the plate feeding means. And driving means.

According to a fourteenth aspect of the present invention, there is provided a plate making / printing apparatus comprising a plate cylinder around which the master made by plate making is wound, and a pressing means for relatively pressing the printing paper against the master on the plate cylinder. 13. The plate making apparatus according to 13, wherein the plate cylinder includes a holding unit that holds the leading end of the master made by plate making, and at the time of a clamping error in which the leading end of the master made by the holding unit is not held, The plate feeding means drives the plate feeding driving means so as to feed the plate-made master toward the holding means by a predetermined amount, and then the rotary blade moves in the master width direction to cut the master. Further, it is characterized by further comprising a plate feed cutting control means for driving the cutting drive means.

According to a fifteenth aspect of the present invention, in the plate-making / printing apparatus according to the fourteenth aspect, there is provided a jam notifying unit for notifying which of the plate-making apparatus and the plate-making printing apparatus the jammed master exists. And Here, the jam notification means includes a jam display means for displaying and notifying and a means for notifying by sound or voice. Specific examples of the jam display means include a guidance part and an auxiliary display part of a liquid crystal display part using an LCD (liquid crystal display device) adopted in an embodiment described later, or a jam occurrence display using an LED (light emitting diode). There is a lamp, and examples of means for giving notification by sound or voice include a buzzer. Therefore, the jam notification means may be appropriately selected from the jam display means or means for notifying by sound or voice according to the purpose and use, or may be used in combination as appropriate.

Structure of "pressing means for relatively pressing the paper against the master on the plate cylinder" in claims 14 and 15.
As a method, a press roller method that presses a press roller as a pressing means that can be brought into contact with and separated from the outer peripheral surface of the plate cylinder via a master that has been prepressed, and a press roller that presses the outer peripheral surface of the plate cylinder through a master that has been prepressed. The impression cylinder contact and separation method that presses the impression cylinder of to perform printing, the plate cylinder contact and separation method that presses the plate cylinder against the impression cylinder through the master that has already been prepressed for printing, and a combination of these methods. is there. The plate cylinder contact / separation method includes the entire drum contact / separation method in which the entire plate cylinder is pressed toward the impression cylinder, and the medium press roller in the plate cylinder is extruded toward the impression cylinder so that only the plate cylinder (print drum drum plate cylinder) is pressed. There is a plate cylinder extrusion method of pressing. As the plate cylinder extrusion method, for example, JP-A-1-
No. 204781, Japanese Patent Laid-Open No. 3- 197078, Japanese Patent Laid-Open No. 3-259484, etc., a so-called intermediate pressing roller system (which also serves as an ink supply roller) in which a metal screen is swollen from the inside to the outside (Including things).

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention (hereinafter referred to as "embodiments") including examples will be described below with reference to the drawings. In the above-mentioned conventional technical examples and each embodiment, the constituent elements such as members and constituent parts having the same function and shape are designated by the same reference numerals, and the description thereof will be omitted once. In order to simplify the explanation, the constituent elements that are configured as a pair in the figure and do not need to be particularly distinguished from each other will be replaced with the description by appropriately describing one of them. Further, in order to simplify the drawings and the description, even if the constituent elements are to be shown in the drawing, the constituent elements that do not need to be particularly described in the drawing may be appropriately omitted without notice. When the constituent elements of the published patent publications and the like are cited and described, the reference numerals are given in parentheses to distinguish them from those of the embodiments and the like. Note that, in FIG. 1, the illustration of the guide member 221 shown in FIG. 15 is omitted.

(Embodiment 1) FIG. 1 shows the overall construction of a stencil printing machine 1 as an example of a plate making and printing machine according to the present invention. In FIG. 1, reference numeral 1F is a stencil printing apparatus 1
The main frame which makes up the framework of is shown. Stencil printer 1
Is a contact glass 74 arranged above the main body frame 1F for placing a document (not shown) and one or a plurality of documents 73 placed on the document table 72 in a scanner unit 76 described later. AD for automatic transfer to fixed position
A document reading device 70 including an F (automatic document feeder) unit 71 and the like, and a main body frame 1 below the document reading device 70.
A plate-making device 15 for perforating the master 16 which is arranged on one side of F and is fed from a master roll 16A wound in a roll shape, and a perforated plate that is arranged substantially at the center of the main body frame 1F. The plate cylinder 2 around which the master 16 is wound around the outer peripheral surface, and the paper gripper 12 as a holding unit that is arranged below the plate cylinder 2 and holds and holds the leading end of the fed printing paper S. Prepare, plate cylinder 2
The printing pressure device 14 having an impression cylinder 9 that presses the printing paper S against the master 16 that has been prepressed, and the printing paper S that is placed below the platemaking device 15 and stacked on the paper feed tray 61, to the printing pressure device 14. Paper feeding device 60 for sending, and this paper feeding device 60
The printed sheet S printed on the printing apparatus 14 arranged below the main body frame 1F facing the sheet is discharged onto the sheet discharge tray 8
1, a sheet discharging device 80 for discharging the sheet to the sheet discharging device 1, and a sheet discharging plate for removing the used master 16 from the outer peripheral surface of the plate cylinder 2 arranged between the sheet discharging device 80 and the document reading device 70 and discharging the used master 16 into the plate discharging box 69. The apparatus 66 includes a device 66 and a control device 120 arranged between the plate making device 15 and the sheet feeding device 60 to control the operation of the plate making printing device 1.

Hereinafter, the document reading device 70, the plate making device 15,
The printing device 14, the paper feeding device 60, the plate discharging device 66, the paper discharging device 80, and the control device 120 will be described. However, since the plate making device 15 and the control device 120 are well-known configurations, they will be simply described. The plate making device 15 has a part of the structure of a plate feeding device for feeding the master 16 to the plate cylinder 2 as described later, and is also called a plate making plate feeding device. As shown in FIG. 1, the ADF unit 7 in the document reading device 70.
1 includes a document placing table 72 and a document ejecting table 75, which are arranged to be openable and closable with respect to the contact glass 74. The automatic document feeder of the ADF unit 71 is a well-known device similar to the configuration described in, for example, FIG. 1 of Japanese Patent Publication No. 7-97813. The scanner unit 76 uses the original 73
It has a well-known original scanning optical system including an image sensor 77 for performing photoelectric conversion corresponding to the reflected light imaged from the surface of the sheet through the imaging lens, a scanner motor (not shown), and the like. The image sensor 77 transmits the obtained image signal to an unillustrated analog / digital (hereinafter referred to as “A” in the body frame 1F).
(Abbreviated as "/ D") is input from a conversion unit to a plate making control unit (not shown). The scanner unit 76 has a well-known structure similar to that shown in FIG. 2 of JP-A-4-189544, for example.
The original 7 is placed on the contact glass 74 without using the portion 71.
An image reading operation can be performed by mounting 3 and driving the scanner motor. Near the lower part of the contact glass 74, a document size detection sensor (not shown) for detecting the document size is arranged in the left-right direction of FIG. 1 and in front of and behind the paper. The document size detection sensor is, for example, a reflection type optical sensor.

As shown in FIGS. 1 to 3, the plate making apparatus 15 includes a master roll 1 in which a master 16 is wound in a roll shape.
A master support member 17 as a master storage means for storing the master 16 so that the master 16 can be fed out from 6A, and the master roll 1
6A and the master set guide plate 20 for mounting the leading end portion of the master 16 and the master set guide plate 20 coming in contact with the master set guide plate 20 through the leading end portion of the master 16.
Master set roller 19 as a master conveying means for conveying 6 and master supporting member 1 in master conveying path XR
7, a thermal head 22 as a plate making means for making a heat sensitive plate of the master 16 fed from the master roll 16A according to an image signal, and a platen for rotating and carrying the master 16 while pressing the thermal head 22. A roller 23, a platen pressure releasing mechanism 25 as a contacting / separating means for contacting / separating the thermal head 22 with the platen roller 23, and a pair of upper and lower tension rollers arranged on the downstream side of the master transport path XR adjacent to the platen roller 23. 26, 26 (hereinafter abbreviated as “tension roller pair 26”), a static elimination roller 27 disposed on the downstream side of the master conveyance path XR adjacent to the tension roller pair 26,
A cutter unit 28 provided on the downstream side of the master transport path XR adjacent to the tension roller pair 26 and provided with a holder 213 as a cutting unit for cutting the unmastered or premastered master 16, and a cutter unit 28 on the master transport path XR. A pair of upper and lower reversing rollers 40, 40 (hereinafter abbreviated as "reversing roller pair 40") arranged on the downstream side of the unit 28, a tension roller pair 26, and a cutter unit 28.
And a guide transport plate 31 and the like arranged below the master transport path XR between the master storage means 30 and the master storage means 30 for storing the master 16 which has been prepressed, and an opening 32a as an inlet of the flex box 32. A master 16 which is provided near the plate and includes the opening 32a and is near the plate
And a pair of upper and lower plate feed guide plates 42, 42 (hereinafter referred to as "plate feed guide plates") disposed downstream of the reversing roller pair 40 in the master transport path XR. Pair 42 ").

At the center of the master roll 16A, there is provided a pipe-shaped core tube 16B which has the same length as the width of the master 16 and which is flush with both end faces of the master roll 16A. Is formed by winding the master 16 around the core tube 16B. The sheet-shaped master 16 corresponding to, for example, the 200th to 300th plates is wound around the master roll 16A.
A is provided so as to supply a plurality of masters 16 and enable the plate making. The master 16 has a laminated structure in which, as a base, a Japanese paper fiber is attached with an adhesive to a thin film of about 1 to 2 μm made of, for example, a polyester terephthalate (PET) system,
The film portion is heated and perforated by the heating element of the thermal head 22. The stencil printing apparatus 1 and the plate making apparatus 15 are configured so that master sizes A3, B4, and A4 can be used.

The master support member 17 is provided so as to rotatably support both ends of the core tube 16B. The master support member 17 is provided so that a braking means (not shown) such as a rubber ball is brought into contact therewith. As a result, the master 16 has the master support member 1
From the master roll 16A mounted and set on No. 7, a braking force that is not naturally paid out by vibration or the like is applied.

The master set roller 19 is connected to a master conveyance motor 24, which will be described later, as a conveyance drive means via a rotation transmission means or the like (not shown). The rotation transmission means is composed of a plurality of gears as shown in FIG. 6 of JP-A-9-226088, for example.

The structure of the master support member 17, the master set roller 19, and the master set guide plate 20 is, for example, the master holding unit (21) shown in FIGS. 1 to 6 of JP-A-9-226088. The same configuration may be used. In this case, the master support member 17 corresponds to the roll flanges (25a, 25b) shown in FIGS.

The thermal head 22 is the platen roller 2
A plurality of heating elements arranged along the main scanning direction corresponding to the axial direction of 3 are provided, and are digitally processed and sent out by the A / D conversion section, the plate making control section, etc. of the document reading apparatus 70. It has a well-known function of selectively heating the heating element by selectively energizing the heating element based on the image signal to heat and melt the film portion of the master 16 corresponding to the heating position to perforate. The thermal head 22 is provided so as to be able to come into contact with and separate from the platen roller 23 by a platen pressure release mechanism 25.

The platen pressure release mechanism 25 includes, for example, the pressure release motor (34) and the contact / separation detection sensor (3) shown in FIGS. 1 to 7 of JP-A-10-157052.
5) has the same structure as the contacting / separating means (28), etc., but in FIG. 1 and FIG. 2, the components such as springs and cams are not shown. The operations relating to the platen pressure release mechanism 25 and the contact / separation detection sensor (35) are described in paragraph No. (00) of Japanese Patent Application Laid-Open No. 10-157052.
44) to (0046). By rotating the pressure release motor (34) by a predetermined amount in the direction occupying the pressure release rotation position, the platen pressure of the thermal head 22 with respect to the platen roller 23 is released (turned off) through the detailed operation of the specification. The Rukoto. At this time, the contact / separation detection sensor (35) is turned off to generate a separation signal. By turning on a power switch (not shown), the home position of the pressure release motor (34) and the contact / separation detection sensor (35) is set, and the platen pressure is released at these home positions. Has been done. On the other hand, the pressure release motor (3
When 4) is rotationally driven by a predetermined amount in the direction occupying the pressing rotational position, the thermal head 22 comes into contact with the platen roller 23 and the predetermined platen pressure is turned on through the detailed operation of the specification. It will be. At this time, the contact / separation detection sensor (35) is turned on to eliminate the separation signal.

The platen roller 23 is integrally formed on the outer peripheral portion of the roller shaft, and is rotatably supported by a pair of plate-making side plates (not shown) fixedly mounted on the body frame 1F side via the roller shaft. . The platen roller 23 includes a pulley arranged on the roller shaft, a drive pulley provided on the master conveyance motor 24 side, and a timing belt (not shown) wound between these pulleys and the drive pulley. It has a function as a transporting unit that is rotated by a master transport motor 24 connected via the master transport motor 24 and transports the master 16 to the master storage unit 30 on the downstream side in the master transport direction X while pressing the master 16 against the thermal head 22. Master transport motor 2
4 is a stepping motor.

The tension roller pair 26 has a function and structure for applying a predetermined front tension (tension) to the master 16 which has been plate-formed from the nip portion between the thermal head 22 and the platen roller 23 to the tension roller pair 26. Each shaft is rotatably supported by the plate making side plate pair. The tension roller pair 26 is configured such that an upper roller thereof is a driving roller and a lower roller thereof is a driven roller, and the upper driving roller is provided with a rotation transmitting means such as a pulley and an endless belt (both not shown). Is connected to the master transport motor 24. Therefore, the tension roller pair 26 also has a function as the above-mentioned conveying means. The lower driven roller of the tension roller pair 26 is incorporated in, for example, the platen pressure releasing mechanism 25, and can be brought into contact with and separated from the upper driving roller similarly to the operation of the platen pressure releasing mechanism 25. There is.

The charge eliminating roller 27 is made of, for example, conductive acrylic + copper sulfide, and is arranged so as to contact the upper surface 212a of the frame 212 of the cutter unit 28. The static elimination roller 27 is designed to let static electricity charged on the master 16 escape from the frame 212 made of a conductive metal. The static elimination roller 27 is connected to the master conveyance motor 24 via a rotation transmission means such as a pulley and an endless belt (both not shown). Therefore, the static elimination roller 27 also has a function as the above-mentioned conveying means.

The cutter unit 28 is the same as that shown in FIG. 15, as shown in detail in FIGS. Hereinafter, a detailed configuration around the cutter unit 28, which has not been described with reference to FIG. 15, will be supplementarily described, and a configuration unique to the first embodiment will be described. The holder 213 (cutter member) of the cutter unit 28 has one end (the right end portion in FIG. 4) that is off the master conveyance path XR so as not to hinder the conveyance of the master 16 when the holder 213 is not cut (not operated). , And on the back side of the paper surface of FIG. 5), this is the initial position of the holder 213, that is, the home position.

The frame 212 is formed, for example, by bending a plate material made of sheet metal into a substantially U-shape, has a length exceeding the width of the master 16, and the plate making is such that its longitudinal direction is along the master width direction Y. It is fixed to the pair of side plates. Frame 2
The upper surface 212a of the plate 12 is formed flat and also serves as a guide plate for conveying and guiding the master 16 that has been prepressed, and forms a master conveying path XR. One side end of the frame 212 is folded back to form a side wall 212b,
A bracket 215 is attached to the other side end portion to form a side wall. The frame 212 has a stopper 212d formed by bending an end of the lower surface 212c of the frame 212 on the downstream side in the master conveyance direction X upward.

As shown in FIGS. 4 and 5, the frame 212 is provided with a rotation moving means 214. The rotation moving means 214 is mainly composed of a bidirectional feed screw 218 and a cutter motor 219. The bidirectional feed screw 218 has a well-known configuration in which an X-shaped groove is formed,
By rotating in one direction, the bidirectional screw bushing 213d screwed into this is reciprocated. Bidirectional feed screw 21
8 has one end on the side wall 212b and the other end on the bracket 2
Each of them is rotatably supported by 15. A drive gear 218a is integrally attached to a position where the bidirectional feed screw 218 penetrates the bracket 215.

The bracket 215 forming the side wall on the other end side of the frame 212 is formed by bending, for example, a metal plate, and a portion continuous with the side wall is abutted against the lower surface 212c, and one end continuous with the abutting surface is the side wall. It is launched vertically so that it is parallel to. The other end connected to the side wall is bent at a right angle so that it is parallel to the upper surface 212a and has a predetermined gap with the upper surface 212a.

A cutter motor 219 is attached and fixed to one end of the bracket 215, as shown in FIG. The cutter motor 219 is a forward / reverse DC motor that is driven to rotate by being supplied with power from a power supply (not shown) via a motor drive circuit (not shown). The cutter motor 219 has a function as a cutting drive unit that drives the holder 213 (cutter member). A pinion 219a that meshes with the drive gear 218a is attached to the output shaft 219b of the cutter motor 219.

The cutter motor 219 is a pinion 219a.
And the drive gear 218a are meshed with each other, the rotational driving force is transmitted to the bidirectional feed screw 218 and the bidirectional feed screw 21
By rotating the bidirectional screw bushing 213
The upper and lower rotary blades 216 of the holder 213 through the reciprocating motion of d.
Holder 2 while rotating a and 216b in opposite directions
The master 16 is cut by reciprocating 13 in the master width direction Y.

A home position sensor 52 as a home position detecting means for detecting the initial position of the holder 213 is mounted between the other end of the bracket 215 on the right end side of FIG. 4 and the upper surface 212a. The home position sensor 52 includes upper and lower rotary blades 216a and 216b.
The position detecting means for detecting the position of the holder 213 including the above is configured, and is, for example, a limit switch.

Further, the output shaft 219 of the cutter motor 219
An encoder 50 is attached and fixed to b.
The encoder 50 is an incremental type photo encoder in the first embodiment, and is a one-channel photo encoder in which a large number of slits are radially arranged on the outer peripheral portion.

On the other hand, the encoder sensor 51 is attached and fixed to the bracket 215 near the encoder 50 so as to sandwich the outer peripheral portion of the encoder 50 at a predetermined interval. The encoder sensor 51 is a transmissive optical sensor (transmissive photointerrupter) including a light emitting unit and a light receiving unit. The encoder 50 and the encoder sensor 51 are the home position sensor 5
Together with 2, the position detecting means for detecting the position of the holder 213 is configured. The encoder 50 and the encoder sensor 51 are incremental pulse encoders that detect the position of the holder 213 by counting the number of pulses of light passing through the slits of the encoder 50 according to the rotation speed of the cutter motor 219. Are configured.

As described above, in the first embodiment, the position detecting means for detecting the position of the holder 213 is composed of the home position sensor 52 and the incremental type pulse encoder (encoder 50, encoder sensor 51). Then, in the first embodiment, the holder 2
The position detecting means for detecting the position of 13 is the cutter motor 21.
One of the features is that it is provided on the 9 side. As described above, the holder 213 including the upper and lower rotary blades 216a and 216b is reciprocally movable in the master width direction Y with the initial position as the starting point.

The cutter unit 28 is disclosed in Japanese Patent Laid-Open No. 2000-6.
Paragraph Nos. (0085) to (0) of the specification of Japanese Patent Publication No. 510
087) has the same advantages as the effects described in 087).
If this advantage is not desired, for example, as disclosed in Japanese Patent Publication No. 7-84086, the movable upper blade has a movable upper blade and a fixed lower blade as rotary blades, and the movable upper blade is fixed. Those that move while rotating in the master width direction Y with respect to the lower blade, Jikkei 3-40556 and Jikkai 61-9259
As disclosed in Japanese Patent Publication No. 1, a movable upper blade (disc-shaped thin blade) as a rotary blade may be provided, which is configured to move while rotating in the master width direction Y. As the position detecting means for detecting the positions of these rotary blades, the home position sensor 52 and the incremental type pulse encoder (encoder 5 described above) are used.
0, the encoder sensor 51) may be arranged in the same manner as described above.

The reversing roller pair 40 has each shaft rotatably supported by the plate making side plate pair, and the upper roller is a driving roller and the lower roller is a driven roller. The reversing roller pair 40 serves to clamp the plate-making master 16 stored in the master storing means 30 to the clamper 4 of the plate cylinder 2.
It has a function as a plate feeding means for plate feeding. The reversing roller 40 as an upper driving roller is a sheet feeding driving unit that is driven by a pulse input different from the master transport motor 24 via a rotation transmitting unit such as a pulley and an endless belt (both not shown). It is connected to the plate motor 41. The plate feeding motor 41 is a stepping motor. The master conveyance speed by the reversing roller pair 40 is equal to the platen roller 23.
It is set in advance to be slightly faster than the master transport speed according to.

As shown in FIGS. 1 to 3, the master storage means 30 is mainly composed of a three-stage switched bending box 32, a guide transfer plate 31, a transfer plate solenoid (not shown), and suction fans 34a and 34b. There is. The flexure box 32 has a function of storing the flexure 16C while forming the flexure 16C in the plate-making master 16. In the flexible box 32,
A plurality of masters 16 that have been prepressed (in the first embodiment, 3
Two switching plates 32b, 32 for folding back to
c is integrally formed, and by these, the three flexible ducts 33a, 33b serving as a plurality of folded-back storage portions,
33c is formed. In the bending duct 33c on the far right side of the bending box 32 in FIG. 2, two suction fans 34a and 34b each having a slit, a mesh-shaped suction port and an exhaust port (both not shown) and having an electric motor built therein are arranged. ing. Due to the rotation of these suction fans 34a and 34b, an air flow that flows from the left side to the right side in the drawing is generated,
Bending is gradually formed on the master 16 that has been plate-making.

The guide carrying plate 31 is displaced from the guide carrying position as shown in FIG. 1 just below the master carrying path XR and the guide carrying position as shown in FIG. It can be swung and opened / closed between itself and the bending forming position located below. When the guide transport plate 31 occupies the bending formation position, the upper side of the bending box 31 is opened, and an opening 32a is formed as an inlet for introducing the master 16 that has been prepressed. The drive mechanism of the guide transport plate 31 is, for example, FIG. 1 of JP-A-10-202996.
The guide plate drive mechanism (130) shown in FIG. 2 is used, and it is driven by a solenoid (131) shown in FIG. 12 of the publication.

The guide carrying plate 31 is lifted from the bending forming position through the detailed operation of the publication by energizing (turning on) the solenoid after the master is cut after the plate making operation. Occupy the guide conveyance position, and thereby the leading end of the master 16 does not fall into the bending box 32 from the opening 32a, and the leading end of the master 16 reaches the plate feed standby position (reversing roller pair 40) shown in FIG. The guide is designed so that the paper is conveyed to a position (a little protruding from the nip part). Also,
After the leading end of the master 16 is clamped by the nip portion of the reversing roller pair 40 and reaches the plate feeding standby position, the guide conveying plate 31
By turning off the power to the solenoid,
Through the self-weight of the guide transport plate 31 and the detailed operation of the publication, the guide transport plate 31 descends and occupies the bending formation position again.

The blowing fan 35 is a suction fan 34.
It has the same electric motor as a and 34b. The electric motors of the suction fans 34a, 34b and the blowing fan 35 are, for example, DC motors. The blowing fan 35 is formed on the master feeding side in the vicinity of the opening 32a of the bending box 32, and the swell 16D (large, 16D) of the plate-finished master 16 shown in FIGS.
It is arranged to prevent the occurrence of (middle). The blowing fan 35 is a common fan having the same blowing / sucking capabilities as the suction fans 34a and 34b. The blowing fan 35 is arranged almost directly above the opening 32a of the bending box 32 with the suction side and the blowing side of the suction fans 34a and 34b being reversed. Suction fans 34a, 34
Each of the DC motors of the b and the blowing fan 35 is electrically connected to the control device 120 as will be described later, is turned on / off by the control device 120, and is controlled by a known PWM (pulse width modulation) control. The air volume of the fan is variably controlled.

As described in part with reference to FIG. 15, in the conventional plate-making apparatus, in addition to the two suction fans 34a and 34b having the same suction capacity on the inner side of the bending box 32,
Further, suction fans similar to the suction fans 34a and 34b are arranged in the central portion in the master width direction (three suction fans in total).
Then, the master 16 which has been prepressed is assisted to be transported, and the master is transported. However, in the first embodiment, since the blowing fan 35 is attached as described above, the opening 32a is provided at the time of plate making and plate feeding as shown in FIG.
The swelling 16D of the plate-finished master 16 (Fig. 15 (a))
(See FIG. 15 (b)), and at the time of plate making, while the plate making master 16 is bent 16C by the suction action of the suction fans 34a, 34b, the bending ducts 33a, 33 of the bending box 32 are formed.
Since it is assisted in being conveyed into the b and 33c, it is possible to reduce one of the three suction fans in total and transfer it to the blowing fan 35.

After all, in comparison with the conventional three suction fans,
The blower fan 35 as a blower fan can be realized by changing the attachment site and attaching it reversely as described above, without adding the supplement, and the master has been a major factor of the above-mentioned conventional problems. It became possible to eliminate 16 excitement 16D itself.
As described above, the number of the blowing fans 35 on the blowing side (one) is set to be smaller than the number of the suction fans 34a, 34b on the suction side (two), and the balance between the wind power and the suction force is set. Is also one of the features.

The plate feeding guide plate 42 changes the direction of the leading end of the master 16 so that the master 16 moves downward to the left and obliquely downward in the drawing.
Has the function of guiding. In FIGS. 1 and 2, reference numeral 18 is a master end sensor. The master end sensor 18 is the master 1 wound around the master roll 16A.
6 is for detecting that the remaining amount is so small that it needs to be replaced. For example, a reflective optical sensor similar to the third sensor 38 shown in FIGS. 1 to 3 of JP-A-10-202996. Consists of. Reference numeral 21 is a master set sensor. The master set sensor 21 detects that the master 16 is set between the master set roller 19 and the master set guide plate 20, and is a reflective optical sensor.

The master tip sensor 29 is provided on the downstream side of the cutter unit 28 in the master transport direction X, and detects the trailing edge of the master 16 cut by the cutting operation of the holder 213 and the leading edge of the master 16. It has a function as a detection means. The master tip sensor 29 is
The reflection type optical sensor includes a light emitting unit and a light receiving unit.

As shown in FIG. 1, the printing pressure device 14 is an ink supply for supplying ink to the plate cylinder 2, the impression cylinder 9 and the master 16 on the plate cylinder 2 which has been prepressed. It has a device 5 and the like. The plate cylinder 2 has a support cylindrical body having a porous structure and a plurality of layers of mesh screens (not shown) wound around the outer peripheral surface thereof, and is rotatably supported around the support shaft 3. The plate cylinder 2 is provided with a drive system including a main motor (not shown) connected via a gear train (not shown) and a belt transmission so that the rotational speed of the plate cylinder 2 can be changed in response to a plurality of printing speeds. Is rotated. The main motor is composed of a DC motor, which is a control motor, and does not transmit a driving force to the sheet feeding drive system as will be described later. Therefore, the main motor is smaller than the conventional main motors. An encoder (not shown) is attached to the output shaft of the main motor. An encoder sensor (not shown) is arranged near the encoder on the body frame 1F side, and a predetermined pulse generated in cooperation with the rotation operation of the encoder by the rotation drive of the main motor is generated by the encoder sensor. By detecting the rotation speed, the rotation speed of the plate cylinder 2 is detected. As a result, the rotation speed of the plate cylinder 2 is controlled via the main motor.

The leading end of the master 16 is locked on the plate cylinder 2.
A clamper 4 as a holding means for holding is arranged along one generatrix of the outer peripheral portion of the plate cylinder 2. The clamper 4 is pivotally attached to the outer peripheral portion of the plate cylinder 2 by a shaft 4a that is rotatable by a predetermined angle, and is swingable / openable / closable. The clamper 4 has a rubber magnet, and when the plate cylinder 2 occupies a plate discharge position or a plate supply position, which will be described later, is proposed by the applicant of the present application.
A stage unit made of a ferromagnetic material provided on the outer peripheral portion of the plate cylinder 2 by an opening / closing device having a configuration similar to that of the base paper locking device (60) shown in FIGS. Is opened and closed against. A configuration may be used in which the closing force is assisted by an urging means such as a torsion coil spring wound around the shaft 4a when the clamper 4 is closed.

As shown in FIG. 1, on the side of the main body frame 1F in the vicinity of the right side of the plate cylinder 2, a master 16 that has been prepressed or a master 16 that has not yet been prepressed (hereinafter simply referred to as "master 1
6 ”) is arranged on the plate cylinder 2 to detect whether or not the plate cylinder master presence / absence sensor 54 is provided. The plate cylinder master presence / absence sensor 54 is, for example, the second patent.
901082 (Japanese Patent Laid-Open No. 3-193351) and the like, and is substantially the same as that on a black sensor pattern (not shown) as a light absorbing member provided on the mesh screen of the plate cylinder 2. A light emitting element (not shown) as a light emitting means for reflecting light on the surface of the master 16 having a film as a surface for reflecting light, and a light receiving means for receiving the reflected light on the film surface of the master 16 And a light receiving element (not shown) as a reflection type optical sensor (reflection type photo interrupter).

When there is no master 16 on the plate cylinder 2, the light from the light emitting element is absorbed by the sensor pattern and no reflected light is generated, so that the plate cylinder master presence / absence sensor 54 is turned off. On the other hand, when the master 16 is present on the plate cylinder 2, the light from the light emitting element is reflected (accurately irregularly reflected) on the film surface of the master 16 and the reflected light is received by the light receiving element. The master presence / absence sensor 54 is turned on. In order to judge whether or not the front end of the master 16 is actually clamped by the clamper 4 at the time of plate feeding / plate mounting, when the clamper 4 is closed and the plate cylinder 2 starts to rotate, the plate cylinder master presence / absence sensor The presence or absence of the master 16 on the plate cylinder 2 is detected by 54 instead.

At a predetermined position on the side of the main body frame 1F facing one end plate of the plate cylinder 2, when the plate cylinder 2 occupies the plate feeding position for positioning the clamper 4 on the right side of the plate cylinder 2, A plate feed position detection sensor (not shown) for detecting the plate feed position and the home when the plate cylinder 2 occupies a home position for positioning the clamper 4 directly below the plate cylinder 2 as shown in FIG. A home position detection sensor (not shown) for detecting the position is arranged. The plate supply position detection sensor and the home position detection sensor are transmissive optical sensors, and are disclosed in, for example, Japanese Patent Application Laid-Open No. HEI-1.
The configuration is the same as that shown in FIG. 11 of Japanese Patent Publication No. 1-91227. At the plate ejection position, the plate cylinder 2 has its clamper 4
Is a position opposed to the plate discharge peeling roller 67 and the plate discharge roller 68 toward the downstream side in the rotation direction of the plate cylinder 2.
The detection unit for detecting the plate ejection position also serves as the home position detection sensor, and the plate ejection position is when an on signal is output from the home position detection sensor when the plate cylinder 2 occupies the home position. Starting from, the rotation amount (rotation angle) of the plate cylinder 2 is detected by the encoder and the like attached to the main motor.

An ink supply device 5 is arranged inside the plate cylinder 2. The ink supply device 5 is arranged in parallel with the ink roller 6 that supplies ink to the inner peripheral surface of the plate cylinder 2 and a small gap with the ink roller 6, and forms an ink reservoir 8 between the ink roller 6. Doctor roller 7 to be formed
And an ink supply pipe 3 which also serves as the support shaft 3 and supplies ink to the ink reservoir 8. The ink roller 6 and the doctor roller 7 are connected to the main motor of the drive system via rotation transmission means such as gears and belts, and are driven by the main motor. The ink supplied from the ink pool 8 to the outer peripheral surface of the ink roller 6 is supplied to the inner peripheral surface of the plate cylinder 2 because a slight gap is provided between the plate cylinder 2 and the outer peripheral surface of the ink roller 6. . The ink is pressure-fed by an ink pump from an ink pack arranged at an appropriate position, and is supplied to the ink reservoir 8 from a supply hole of the ink supply pipe 3.

The plate cylinder 2 is, for example, disclosed in JP-A-5-229243.
Plate cylinder device (5
Similar to 5), a plate cylinder unit (not shown) is formed together with the ink supply device 5 and the like. This plate cylinder unit has a body frame through a mounting / demounting means provided on the side of the body frame 1F having the same structure as the holding means (36) shown in FIG. 2 of JP-A-5-229243. It is detachable from the 1st floor.

The impression cylinder 9 has a structure and function as a pressing means which is rotated at the same peripheral speed as the plate cylinder 2 and in a predetermined synchronization with the plate cylinder 2. The printing paper S that is arranged near the lower part of the plate cylinder 2 and is fed from the paper feeding device 60.
It has a well-known function of pressing the front end portion of the paper cylinder 2 with the paper gripper clamper 12 against the outer peripheral surface of the plate cylinder 2. The impression cylinder 9 has an outer peripheral portion having the same diameter as that of the plate cylinder 2, and a recess 1 for avoiding interference with the clamper 4 portion of the plate cylinder 2 is formed in a part of the outer peripheral portion.
1 is formed. The paper gripper 12 is adapted to be opened and closed by contact with a cam (not shown) provided on the body frame 1F side.

The impression cylinder 9 is a cam drive mechanism for swinging an impression cylinder shaft 10 provided at the center of the impression cylinder 9 to selectively press the outer peripheral surface of the plate cylinder 2 and the outer circumference of the plate cylinder 2. A well-known impression cylinder contacting / separating means (both not shown) provided with a holding arm rotatably holding the surface apart from the surface, a biasing means such as a spring, and a holding means such as a solenoid (neither shown). Thus, it is configured so as to be able to come into contact with and separate from the plate cylinder 2. The detailed structure of the drive system including the main motor, the impression cylinder contacting / separating means, and the like is the same as that shown in FIGS. 1 to 5 of JP-A-9-216448, for example. . As the impression cylinder contacting / separating means, one using an eccentric shaft disclosed in, for example, FIG. 1 of JP-A-5-201115 can be used. A well-known press roller is also used as the pressing means.

The sheet feeding device 60 mainly includes a sheet feeding tray 61, a sheet feeding roller 62, a separating roller 63, a separating roller 63a, a pair of guide plates 65a and 65b, a pair of registration rollers 64, and a tray elevating motor (not shown). It is configured. The paper feed tray 61 is loaded with print paper S thereon and is supported movably up and down with respect to the main body frame 1F, and is moved up and down by a tray lifting motor (not shown) in conjunction with increase and decrease of the print paper S. .

The paper feed roller 62 has a well-known function of bringing the print paper P into contact with the uppermost print paper S, and feeding the print paper P. It has a well-known function of separating and feeding S one by one. Paper feed roller 62, separation roller 6
The 3 and the separating roller 63a constitute a paper feeding unit that separates and feeds the printing paper S one by one.

The paper feed roller 62 and the separation roller 63 are
It is connected to a sheet feeding motor (not shown) via a rotation transmission means including a pulley and an endless belt (not shown), and is rotated by the sheet feeding motor. The paper feed motor is
It is a stepping motor. The sheet feeding means is driven by a sheet feeding means independent driving method that is rotated by the sheet feeding motor independent of the rotation driving force of the main motor, instead of the sector gear method that is a conventional driving method of the sheet feeding means. It is adopted. A one-way clutch (not shown) is interposed between the pulleys and the shafts of the rollers 62, 63.
When the paper feed motor is off, the printing paper S is in a free state in which it can rotate in the feeding direction. As a result, when only the registration motor, which will be described later, is turned on, the paper feed roller 62 and the separation roller 63 are rotated together in the feeding direction of the printing paper S.

A pair of upper and lower registration rollers 64 are disposed on the downstream side of the separation roller 63 in the printing paper conveyance direction. The registration roller pair 64 abuts the leading edge of one sheet of printing paper S separated and fed by the above-mentioned paper feeding means to a portion immediately before the nip portion thereof, and the plate-making on the rotating plate cylinder 2 is completed. It has a function as a paper conveyance synchronizing means that conveys the paper to the widened paper gripper clamper 12 at a timing while synchronizing with the image writing start position of the master 16. In the registration roller pair 64, the upper roller is a driven roller, the lower roller is a drive roller, and the lower drive roller is a registration motor (not shown) via a rotation transmission means including a pulley and an endless belt (not shown). No.) and is rotated by the registration motor. The registration motor is a stepping motor.

The pair of guide plates 65a and 65b are fixed to a paper feed side plate (not shown) fixedly arranged on the main body frame 1F side and guide the printing paper S to be fed. When an impression cylinder without the paper gripper 12 or a well-known press roller is used, the image writing start position (plate making start position) of the plate-making master 16 on the rotating plate cylinder 2
In synchronism with the above, it may be conveyed between the outer peripheral surface of the plate cylinder 2 and the impression cylinder, or between the outer peripheral surface of the plate cylinder 2 and the press roller. As the rotation driving means for the sheet feeding roller 62 and the separation roller 63, a mechanical cam driving means utilizing the rotation driving force of the main motor may be used instead of the sheet feeding motor. Similarly, as the rotation driving means of the registration roller pair 64, a mechanical cam driving means using the rotation driving force of the main motor is used instead of the registration motor.

The paper discharge device 80 includes a paper discharge tray 81, a paper discharge claw 82, a suction paper discharge inlet roller 83, and a suction paper discharge outlet roller 8.
4, a conveyor belt 85, a suction fan 86, and a paper discharge drive motor (not shown). The paper ejection claw 82 is
A paper grip clamper 12 is provided near the outer peripheral surface of the impression cylinder 9.
By the opening operation of, the printed printing paper S released from the paper gripper 12 is peeled off and guided. The suction paper discharge inlet roller 83 and the suction paper discharge outlet roller 84 are used for the paper discharge device 8
It is rotatably supported by a sheet-discharging side plate (not shown) of No. 0, and a conveyor belt 85 having a plurality of openings on its surface is stretched between the rollers 83 and 84. The suction / discharge outlet roller 84 is driven to rotate by the discharge drive motor, and the rotational force of the suction / discharge outlet roller 84 is transferred via the conveyor belt 85.
3 is transmitted. A suction fan 86 having a built-in fan motor is disposed between the rollers 83 and 84 and below the sheet discharge side plate. The suction fan 86 generates a downward airflow in the drawing by its rotation, and sucks the printing paper S that has been printed on the surface of the conveyor belt 85. It should be noted that, in addition to the paper ejection pawl 82, in addition to the paper ejection claw 82, the outer circumference of the plate cylinder 2 can be reliably prevented when the leading edge of the printing paper S is ejected by the paper gripper 12 when a paper ejection error occurs. A peeling claw (not shown), which is disposed near the surface and is capable of separating the printed printing paper S from the plate cylinder 2, and between the plate-made master 16 and the printing paper S on the plate cylinder 2. There is also one provided with a peeling fan (not shown) for blowing air to peel the printing paper S from the plate cylinder 2.

The plate discharging device 66 is mainly composed of a plate discharging box 69, a plate discharging peeling roller 67, a plate discharging roller 68, a plate discharging motor (not shown), a compression plate (not shown) and a compression plate drive motor (not shown). Has been done. Plate discharge peeling roller 67
Is in pressure contact with the plate discharge roller 68 and is rotated by the plate discharge motor. The plate discharge peeling roller 67 is displaceable between a peeling position where it comes into pressure contact with the outer peripheral surface of the plate cylinder 2 and a separation position which is separated from this peeling position, through a moving means having a swing arm. The moving means is locked and held by a locking means (not shown) when the plate discharge peeling roller 67 is at the separated position. The structure of these main parts is similar to that shown in FIGS. 1 to 5 of Japanese Utility Model Publication No. 2-274, for example. The compression plate is housed in the plate discharge box 69 via an elevating mechanism (not shown) so as to be vertically movable, and the compression plate is moved up and down in the plate discharge box 69 by rotational driving of the compression plate drive motor. Has become.

Next, the operation panel 90 will be described with reference to FIG. The operation panel 90 is used to give an instruction to each device of the stencil printing apparatus 1 to perform a desired operation, and to confirm / recognize the state of each device / section and the like. It is arranged on one side of the upper part of the document reading device 70 shown in FIG. On the operation panel 90, as shown in FIG. 6, reading of an image of an original document, plate ejection, plate making, plate feeding,
A plate-making start key 91 as a plate-making start setting means for activating a series of processes (operations) from the sheet feeding process, the plate-making printing process to the paper discharge process, that is, for starting the plate-making operation, the number of printed sheets, etc. Numeric keypad 9 for input / setting
3, a print start key 92 for starting a printing operation for the number of copies (input / setting) made with the ten keys 93, a message such as a state of operation to be performed by the user, a warning, or selection. The function of the master 16 and the jamming of the master 16 and the printing paper S by appropriately displaying and notifying the jam location of the master 16 and the printing paper S. A jam occurrence display lamp 96 and the like for lighting and blinking are arranged.

The liquid crystal display unit 95 is composed of an LCD (liquid crystal display device) and is driven by a liquid crystal drive circuit (not shown). The liquid crystal display unit 95 notifies the user of an operation to be performed, gives a warning to the operation result,
Guidance section 95A for appropriately displaying the jam occurrence location of the master 16 and the jam occurrence location of the printing paper S
Further, the operation contents displayed in characters by the guidance section 95A are sequentially displayed in the figure, and the jam location of the master 16 in the stencil printing apparatus 1, the jam location of the printing paper S, the failure location, the failure content, etc. are specifically described. It has an auxiliary display portion 95B for displaying a picture. The guidance unit 95A and the auxiliary display unit 95B serve as a cut error display unit for displaying and notifying a cut error or the like of the master 16, and the jammed master 16 is provided on either the plate making device 15 side or the other main body frame 1F side. It has a function / structure as a jam display means for displaying and notifying whether or not it exists.

The jam occurrence display lamp 96 is composed of an LED (light emitting diode), and is driven via a light emitting diode drive circuit (not shown). The jam occurrence display lamp 96 has a function as a cut mistake display means for displaying and notifying a jam occurrence of the master 16, such as a jam occurrence of the master 16 in the plate making device 15 or the plate cylinder 2.
Have a configuration. Although not shown, the operation panel 90 includes three master size setting keys for manually setting the master sizes A3, B4, and A4 that can be used in the stencil printing apparatus 1 and the plate making apparatus 15, and a variable magnification. Keys and the like are provided.

Next, with reference to FIG. 7, a control configuration characteristic of the first embodiment will be described. As shown in FIG. 7, the control device 120 includes a CPU (Central Processing Unit) 121,
I / O (input / output) port / I / F (interface)
124 (hereinafter referred to as "input port interface 124" or "output port interface 124") and ROM (read-only storage device) 122, RAM
A microcomputer having a (readable / writable storage device) 123 and the like and connected by a signal bus (not shown) is provided.

The CPU 121 of the control device 120 (hereinafter sometimes simply referred to as the “control device 120”) uses a sensor input circuit (not shown) including an appropriate electronic circuit and the like, an input port interface 124, and the like to operate as a master. ON / OFF signals and data signals from various keys of the leading edge sensor 29, the encoder sensor 51, the home position sensor 52, the plate cylinder master presence / absence sensor 54, and the operation panel 90 are received. The control device 120, via the output port interface 124, the liquid crystal drive circuit, the light emitting diode drive circuit, various motor drive circuits, and the like, the guidance section 95A and the auxiliary display section 95B of the operation panel 90, the jam occurrence display lamp 96, the master conveyance. A command signal is transmitted to the motor 24, the plate feeding motor 41, the suction fans 34a and 34b, the blowing fan 35, and the cutter motor 219 to perform the characteristic control described later.

The RAM 123 temporarily stores the calculation result of the CPU 121, and stores the ON / OFF signals and data signals input from the sensors and the keys as needed.
The ROM 122 stores in advance programs, data, etc. for executing characteristic operations as shown in the flowcharts shown in FIGS. The ROM 122 is used to set the above programs and data.
Is given in advance as data, or the ROM chip is exchanged.

The control device 120 cooperates with the encoder 50 of the cutter motor 219 to detect the position of the holder 213 based on the number of pulses output from the encoder sensor 51, thereby determining the locked state or the like. Has a basic function as (claim 4). The control device 120 has the following characteristic control functions in addition to the basic control functions described above. The control functions of the control device 120 will be briefly described below by omitting various drive circuits.

First, the control device 120 has the holder 213.
When it is determined that the holder 213 is in the locked state, the holder 213 is referred to while referring to the output signal from the home position sensor 52.
After reversely driving and controlling the cutter motor 219 to return the cutter motor 219 to the initial position, the master set roller 19, the platen roller 23, the tension roller pair 26, and the discharging roller 27
The master conveyance motor 24 is driven and controlled in the normal direction so that the master 16 is conveyed again to the downstream side in the master conveyance direction X, and then the cutter motor 219 is moved so that the holder 213 moves forward to cut the master 16. It has a function of driving and controlling the normal rotation (Claim 5). At this time, the feed amount of the master 16 to which the master 16 is conveyed again changes depending on the lock position of the holder 213 (claim 6).

Secondly, the control device 120 cuts when the master tip sensor 29 does not detect the rear end of the master 16 after the control operation by the first function, that is, after the normal rotation driving of the cutter motor 219. Master 1
Guidance part 95A to display 6 cut mistakes, etc.
And a function of controlling the auxiliary display portion 95B (claim 7).

Thirdly, the control device 120 performs the cut operation after the control operation by the first function, that is, after the cutter motor 219 is driven in the normal direction and the master front end sensor 29 does not detect the rear end of the master 16. It is determined as a mistake and the master set roller 19, the platen roller 23, the tension roller pair 26, and the charge eliminating roller 27 drive and control the master carrying motor 24 in the normal direction so that the master 16 is carried again downstream in the master carrying direction X. After that, the cutter motor 2 is moved so that the holder 213 moves forward again to cut the master 16.
It has a function of driving and controlling 19 in the normal direction (claim 8).

Fourth, the control device 120 cuts after the control operation by the first function, that is, after the cutter motor 219 is driven in the normal direction and the master front end sensor 29 does not detect the rear end of the master 16. When judged as a mistake, the master conveyance motor 24 is reversely driven and controlled so that the master 16 is conveyed to the upstream side in the master conveyance direction X by the master set roller 19, the platen roller 23, the tension roller pair 26 and the charge eliminating roller 27. After that, the cutter motor 21 is moved so that the holder 213 moves forward again to cut the master 16.
It has a function of driving and controlling 9 in the forward direction (claim 9).

Fifth, after the control operation by the fourth function, that is, after the control motor 120 drives and controls the cutter motor 219 in the normal direction so that the holder 213 moves forward again to cut the master 16, 16 cut pieces are plate making equipment 1
Guidance unit 9 to display and inform that it is in 5
5A and a function as an informing means for controlling the auxiliary display section 95B (claim 10).

Sixth, in addition to the control function of any one of the first to the fifth, the control device 120 includes the bending box 32.
The blower fan 35 so as to blow air to the master 16 in the vicinity of the opening 32a of the cutter, while the holder motor 213 reciprocates in the master width direction Y to cut the master 16 in the forward and reverse directions. It has a function as a cutting drive control unit (claim 11).

Seventh, in addition to the sixth control function, the control device 120 can independently control the suction fans 34a, 34b and the blowing fan 35, and has a function of changing the control under predetermined conditions. (Claim 12).

The seventh control function of the controller 120 will be described in more detail below. The control device 120 drives and controls the suction fans 34 a and 34 b to be turned on and controlled prior to the blowing fan 35. The control device 120 includes the stencil printing device 1 and the plate making device 1.
The suction fans 34a and 34b and the blowing fan 35 are driven and controlled so that the air flow rate is in accordance with the operation speed and the plate making speed specific to No. 5.

In FIG. 2, the control device 120 reduces the air volume at the beginning of the plate making so that the plate-made master 16 sucked and conveyed reaches the bending duct 33a from the opening 32a of the bending box 32. The suction fans 34a and 34b are controlled so as to stabilize the suction conveyance of 16 so that the master 16 which has been preliminarily sucked and conveyed has the maximum air volume from the vicinity of the switching of the bending box 32 in FIG. 2 to the plate 32b. Suction fans 34a, 34b
To control. The control device 120 detects the document size detected by the document size detection sensor (the same master size when the magnification is provided and the magnification is equal, and the master size of the magnification when the magnification is scaled by the scaling key). Alternatively, the suction fan 34a, so as to change the respective air volumes according to the master size (A3, B4, A4) set by the master size setting key,
34b and the blowing fan 35 are controlled. For example, when the master size A3 is large, the air volume is increased in order to secure a relatively large suction force and wind force, and conversely, when the master size A4 is small, a relatively small suction force and wind force are required. Reduce the air volume.

The controller 120 controls the cutter motor 21 so that the holder 213 reciprocates to cut the master 16.
9 is driven / controlled in the forward / reverse direction, the suction fans 34a, 34b and the blowing fan 35 are always operated, and the suction fans 34a, 34b and the blowing fan 35 are blown so as to reduce the respective air volumes in order to eliminate the fluttering of the master 16. The fan 35 is controlled. The control device 120 operates the blowing fan 35 during plate feeding by the pair of reversing rollers 40 based on the start signal from the plate feeding motor 41.

Eighth, the control device 120 reverses at the time of a clamp error in which the front end portion of the master 16 which has been prepressed by the clamper 4 is not held, that is, based on the master no (OFF) signal from the plate cylinder master presence / absence sensor 54. After the roller pair 40 drives and controls the plate feed motor 41 so as to feed the master 16 just for plate making toward the clamper 4 of the plate cylinder 2, the holder 213 moves in the master width direction Y to make the plate. Cutter motor 219 to cut the finished master 16
It has a function as a plate feed cutting control means for driving and controlling (Claim 14).

Ninth, in the controller 120, the jammed master 16 is controlled by the plate making device 15 at the time of the above-mentioned clamping error.
Also, it has a function of controlling the guidance part 95A and the auxiliary display part 95B so as to display / notify which of the other body frames 1A is present (claim 15).

Next, the operation of the stencil printing machine 1 will be described with reference to FIGS. The operation described below is
It is performed by a command from the control device 120. At first,
The normal operation including the operation peculiar to the present invention will be mainly described. Step S of the flowchart shown in FIG.
It should be additionally noted that a part of the operation similar to the conventional one is included like 12. An example of this operation is disclosed in JP 2001-1507 A.
Based on the timing chart (when the energy saving mode is not taken into consideration in the operation example 1 related to the high speed 1 mode) shown in FIG. However, in order to simplify the explanation, part of the description of the operation described in the above publication is omitted. Master transport motor 24 and plate feed motor 4 described above
1, suction fans 34a, 34b and blowing fan 3
In describing the operation of various controlled object driving means such as No. 5, "on" is when the various controlled object driving means are driven.
When the driving is stopped, it is sometimes referred to as “off”. Further, after the ON / OFF operation by the various controlled object driving means has been described once, the detailed description of the ON / OFF operation by the controlled object driving means will be omitted.

The initial state of the stencil printing machine 1 is shown in FIG.
As shown in FIG. 1, in the plate making device 15, the master roll 1
The leading end of the master 16 fed from 6A is set to a plate feed standby position held by the nip portion of the reversing roller pair 40, and the plate cylinder 2 and the impression cylinder 9 are set to the home position. In the initial state of FIG. 1, first,
When the user turns on a power switch (not shown), initialization is performed and the high speed 1 mode is initialized.
Before and after this, a plurality of originals 73 are placed and set on the original placing table 72 of the original reading device 70, and when the printing paper S is insufficient or not on the paper feed tray 61, the printing paper S Replenish and set as appropriate. The plate supply standby position of the plate making device 15 is not limited to the above position, and for example, the upper surface 212 of the frame 212 in the cutter unit 28.
There is also one that is set at the left end of FIG.

Next, an operation for starting plate making / printing is performed. First, when the user presses the plate making start key 91, a plate making start signal is generated and transmitted to the control device 120. This enables plate ejection, document image reading,
A series of operations including plate making, plate feeding, sheet feeding, plate printing, sheet discharging, and idling after plate printing are performed. The plate-making start signal generated by pressing the plate-making start key 91 triggers the subsequent operation flow. The manual operation by the user is until the plate-making start key 91 is pressed, and the subsequent operation up to the idle rotation after the plate making is automatically performed. Here, the ink is supplied by the ink supply device 5 in the plate cylinder 2 and an appropriate ink pool 8 is formed.
And the elevating motor of the sheet feeding device 60 is driven on to set a predetermined sheet feeding pressure, separation pressure, and the like.

First, the plate cylinder 2 in which the used master 16 of the previous plate is wound on the outer peripheral surface and occupies the home position is turned on by the main motor being turned on.
The rotation starts in the clockwise direction indicated by the middle arrow, and the main motor is turned off in accordance with the plate ejection position to stop at the plate ejection position. Hereinafter, the on / off operation of the main motor will be omitted. During the plate discharge and plate feeding operations, the plate cylinder 2 rotates while being separated from the outer peripheral surface of the impression cylinder 9.
When the plate cylinder 2 stops at the plate ejection position, the clamper motor is turned on to open the clamper 4 at a predetermined angle, so that the clamper 4 is expanded. The locking state of the moving means by the locking means is released, and the plate discharge peeling roller 67 is released.
Occupies a peeling position where it comes into contact with the used master 16 on the plate cylinder 2, and at the same time, the plate discharge motor is turned on. As a result, the plate discharge peeling roller 67 is rotated and pressed against the outer peripheral surface of the plate cylinder 2 corresponding to the front end of the used master 16 held by the clamper 4, and the front end of the used master 16 is pressed. Is discharged by the plate discharge peeling roller 67.
Is scooped up from the outer peripheral surface and peeled off. Immediately after this,
The plate discharging / peeling roller 67 is returned to the original state shown in FIG.
It is returned to the separated position shown in FIG. 1 and is rotatably held together with the plate discharge roller 68. Immediately after the plate discharge peeling roller 67 is returned to the separated position, when the clamper motor is turned on to close the clamper 4, the clamper 4 is closed by the biasing force of the torsion coil spring and the magnetic force of the rubber magnet.
Hereinafter, on / off operations of the clamper motor and the plate discharge motor will be omitted. Plate cylinder 2 after clamper 4 is closed
When the is rotated in the clockwise direction, the substantial plate ejection operation starts. The used master 16 that has been peeled off is conveyed while being peeled from the outer peripheral surface of the plate cylinder 2 by the rotation / conveying operation while being held by the nip portion of the plate ejection peeling roller 67 and the plate ejection roller 68, and inside the plate ejection box 69. Discharged to
It will be housed.

On the other hand, the plate making apparatus 1 immediately after the plate making start signal is generated.
In No. 5, when the pressure release motor (34) is turned on and rotated, the platen pressure is applied to the master 16 between the platen roller 23 and the thermal head 22, and the state of the application of the platen pressure is detected. The sensor (35) detects off. Since the platen pressure is released in the plate-making standby state, the platen roller 23 and the thermal head 22 are separated from each other, and the upper and lower rollers of the tension roller pair 26 are separated from each other.
The slack occurs in the master 16 from the master set roller 19 to the reversing roller pair 40. If the master 16 is directly mounted on the plate cylinder 2 for printing, winding wrinkles may occur, or the plate making start position may become unstable and the plate making start position may shift. Therefore, the platen pressure is applied. Immediately after that, the master feeding motor 24 is not driven and only the plate feeding motor 41 is turned on for a predetermined time to feed the master 16 a little and remove the slack of the master 16. At this time, between the master set roller 19 and the master set guide plate 20, between the platen roller 23 and the thermal head 22, between the nip portion of the tension roller pair 26, between the charge eliminating roller 27 and the upper surface 212a of the frame 212. The master 16 is transported to the downstream side in the master transport direction X while sliding between each member while appropriately rotating each roller. After that, until the plate feeding motor 41 is driven during plate feeding, the motor 41 is controlled to be excited. As described above, since the plate feed motor 41 is excited at a predetermined timing, the reversing roller pair 40 is free to rotate, and it is possible to prevent the master 16 that has performed the plate making start alignment from being displaced due to vibration or the like.

Next, in parallel with the movement of the plate cylinder 2 to the plate ejection position and the plate ejection operation, the image reading operation and the plate making (writing) operation of the original document 73 are started by the document reading device 70 and the plate making device 15. The lowest document 73 of the plurality of documents 73 set on the document table 72 is automatically conveyed to a predetermined position on the contact glass 74, and the image of the document 73 is read by the document scanning optical system. The analog image signal photoelectrically converted by the image sensor 77 is input to the A / D converter. The document 73 from which the image has been read is discharged onto the document discharge tray 75. Above A / D
The analog image signal input to the conversion unit is converted into a digital image signal, and the digital image signal is transmitted to the plate making control unit via an image signal processing unit (not shown).

On the other hand, in parallel with the image reading operation of the original 73, the plate making operation and the plate ejecting operation are performed while the thermal head 22 is controlled by the plate making control section which receives the digital image signal from the image signal processing section. Automatically proceed in parallel. The heating element of the thermal head 22 is selectively heated according to the digital image signal, and the film portion of the master 16 pressed by the thermal head 22 against the platen roller 23 is selectively heated and melted to be punched. Meanwhile, when the master transport motor 24 is turned on, the master set roller 19, the platen roller 23, the tension roller pair 26, and the charge eliminating roller 27 are respectively rotated in the direction of the arrow in the drawing as shown in FIG. The plate-made master 16 after plate-making is conveyed to the downstream side of the master conveyance path XR without sticking due to static electricity or the like. On the other hand, the plate feeding motor 41 remains off, which causes the reversing roller pair 40 to stop.

Simultaneously with this, in step S1 of FIGS. 2 and 8, first, the suction fans 34a and 34b are turned on. The suction fan 34a, 34b is blown to the fan 35
What is operated before is that the master 16 that has been prepressed causes fluttering and unstable behavior due to the air blown by the blowing fan 35, which causes the suction fan 34 to operate.
This is to prevent the normal bending 16C as shown in FIG.
By operating the suction fans 34a and 34b before the blowing fan 35, the air flowing along the plates 32b and 32c is switched from left to right and from left to right in FIG. 2 due to the difference in atmospheric pressure in the flexible box 32. Is normally formed, and the air blown by the blowing fan 35 that operates after that is effectively and synergistically actuated.

When the normal flexure 16C as shown in FIG. 2 is being formed, the blowing fan 35 is turned on at an appropriate timing. As a result, the blowing fan 35 is located near the upper portion of the opening 32a, that is, the frame 212.
The air is blown from above the normal flexure 16C formed on the master 16 that has been plate-formed between the left end of the upper surface 212a of the sheet and the reversing roller pair 40, and the master 16 that has been plate-made is sucked by the suction action of the suction fans 34a and 34b. Deflection 16C
The flexing box 3 while gradually increasing
The two flexible ducts 33a, 33b, 33c are conveyed in a manner of being sequentially folded back. In this way, the master 16 that has been prepressed is stored in the bending ducts 33a, 33b, 33c of the bending box 32 (step S in FIG. 8).
2).

In steps S1 and S2, the suction fans 34a and 34b and the blowing fan 3 are used.
More specifically, the controller 5 controls the controller 12 to perform the following operations.
Controlled by 0. That is, the above-mentioned Japanese Patent Laid-Open No. 2001-
Corresponding to the stencil printing apparatus 1 and the plate making apparatus 15 capable of performing the operation example 1 and the like relating to the high speed 1 mode shown in FIG. 5 of JP 150786, the operation speed peculiar to the stencil printing apparatus 1 and the plate making apparatus 15 and The suction fans 34a, 34b and the blowing fan 35 are driven and controlled so that the air flow rate is according to the plate making speed. In addition, at the beginning of plate making such that the plate-making master 16 that is sucked and conveyed reaches the bending duct 33a from the opening 32a of the bending box 32, the suction fans 34a and 34b are rotationally driven so as to reduce the air volume. In addition to further stabilizing the suction conveyance of the plate-making master 16, the plate-making master 16 that is sucked and conveyed is driven to rotate at a high speed so as to maximize the air volume from the vicinity of the switching of the bending box 32 in FIG. 2 to the plate 32b. It Further, the suction fans 34a and 34b and the blowing fan 35 are provided with an original size detected by the original size detection sensor (the same master size when the magnification is provided and the magnification is the same, and when the magnification is changed by the magnification key). Is the master size of the scaling factor) or the master size (A3, B4, A4) set by the master size setting key, and the rotation speed can be changed so as to change the respective air volumes. For example, in the case of a large master size A3, the rotation speed is increased so as to increase the air volume in order to secure a relatively large suction force and wind force, and conversely, in the case of a small master size A4, a relatively small suction force. Also, the control is performed such that the rotation speed is reduced so that the amount of airflow is reduced because the wind power supply is sufficient.

Although explained before and after, during the plate making operation, the plate feeding and clamping operations shown in step S3 of FIG. 8 are proceeded, and the plate cylinder 2 rotates clockwise and stops at the plate feeding position (step of FIG. 9). See S10). The details of the plate supply and the clamp operation are shown in the flowchart of the pre-clamp operation process in FIG. The flow of FIG. 9 starts from step S10. During this period, the plate discharge device 66 is used to discharge the plate separation roller 6
7 and the plate discharge roller 68 are continuously operated, and the used master 16 corresponding to the rotation amount of the plate cylinder 2 is peeled and conveyed and discharged into the plate discharge box 69.
Be accommodated. During this period, in the plate making device 15, the master transport motor 24 is driven on, and the plate making operation is continued while the flexure 16C is formed in the master 16 which has been made by the master storing means 30.

On the other hand, during the plate making (writing) operation,
While the plate cylinder 2 is rotationally moving to the plate feeding position, the sheet feeding device 60
Then, by turning on the paper feed motor to rotate the paper feed roller 62 and the separation roller 63, and by the cooperative action of the separation roller 63 and the separation roller 63a, the topmost sheet of the paper feed tray 61 is The printing paper S is fed, and the leading end of the printing paper S is abutted against the portion of the registration roller pair 64 immediately before the nip portion. Thereafter, the paper feed motor is turned off and the rotations of the paper feed roller 62 and the separation roller 63 are stopped, whereby the leading edge of the print paper S is brought into contact with and held by the nip portion of the registration roller pair 64, and The rear end portion of S comes into contact with and is held by the paper feed roller 62 and the separation roller pair 63.

As soon as the plate cylinder 2 stops at the plate feeding position, the clamper 4 is ready for the plate feeding operation, that is, for the plate loading.
Is expanded and the plate cylinder 2 is in a plate supply standby state. During the plate supply standby state, the plate discharging operation by the plate discharging peeling roller 67 and the plate discharging roller 68 in the plate discharging device 66 is suspended. At this time, the plate feed motor 41 is turned on at a predetermined timing, and the pair of reversing rollers 40 is rotated by this, so that the leading end of the plate-making master 16 spreads while being guided by the plate feed guide plate 42. It is conveyed to the clamper 4 that has been cut. When it is determined that the leading end of the plate-making master 16 has reached the clamper 4 due to the on operation of the plate feeding motor 41 for a predetermined number of steps, the plate feeding motor 41 is turned off and the operation of the reversing roller pair 40 is stopped. At the same time, the clamper 4 is closed. As a result, the tip of the master 16 that has been plate-made is locked by the clamper 4.

At the time of printing, the master transport speed v2 by the plate feed motor 41 is changed to the master transport speed v by the master transport motor 24 in response to a command from the control device 120.
Pulse frequency (pps) to be supplied to the plate feeding motor 41 and the master transport motor 24 so as to be 1 or more.
By changing, the plate feeding motor 41 and the master transport motor 24 are controlled so that the master transport speed v2 ≧ the master transport speed v1.

As described above, during the plate feeding including the period when the plate feeding motor 41 is turned on and the reversing roller pair 40 is rotating, in other words, the master 16 which has been plate-made after the plate feeding motor 41 is turned on. Pair of reversing rollers to be wound around the plate cylinder 2
During the plate feeding operation during the movement of the nip portion of 0, the blowing fan 35 blows air from above the master 16 that has been prepressed in the vicinity including the opening 32a, so that the force by this blowing is prepressed on the sending side. 15 (a) and 15 (b) because the Washi paper fiber surfaces 16b of the master 16 and the master 16 on the sending side do not come into contact with each other and separate from each other. The Washi paper fiber surfaces 16b of the master 16 that have been prepressed do not come into contact with and rub against each other around the opening 32a from inside the bending box 32, and thus the frictional resistance thereof causes the stencil on the sending side to be conveyed near the opening 32a of the bending box 32. It is possible to prevent the completed master 16 from being raised and rising.

Then, a master winding operation for plate feeding is performed (see step S11). When the plate cylinder 2 is rotated clockwise by a predetermined angle from the plate feeding position, the plate cylinder master presence / absence sensor 54 detects the presence / absence of the plate-finished master 16 on the plate cylinder 2 (see step S12). In step S12, when the master 16 is present on the plate cylinder 2, the plate cylinder master presence / absence sensor 54 is turned on, and the control device 120 receives this signal and determines that the normal clamping operation has been performed. On the other hand, the master 16 that has been prepressed on the plate cylinder 2
If there is not, the plate cylinder master presence / absence sensor 54 is turned off,
In response to this signal, the control device 120 judges that a clamp miss jam has occurred, controls the main motor so as to stop / interrupt the master winding operation due to the rotation of the plate cylinder 2, and at the same time, the clamp miss jam occurs. The guidance unit 95A, the auxiliary display unit 95B, and the jam occurrence display lamp 96 are controlled to display the occurrence. That is, the jam occurrence display lamp 96 of the operation panel 90 lights up and blinks, and a message indicating that a clamp error jam has occurred and the location of the occurrence are displayed on the guidance section 95A and the auxiliary display section 95B of the liquid crystal display section 95, respectively. (See step S13). At this time, conventionally,
Due to the step-out of the master transport motor 24 or the plate feed motor 41, etc., it is determined that the master 16 has been transported to the specified feed amount even though the master 16 is not actually transported, and the holder 213 cuts. By performing the operation, the master 16 is cut at the place where the master 16 is actually sent, so that short master pieces called “strips” are generated, and it is difficult to process the master pieces. In order to solve this problem, the control device 120 is configured to execute the flow relating to the cutter operation post-processing shown in FIG. 12, which will be described later. The cause of occurrence of the clamp error jam is as described in the related art.

As described above, the clamping operation is normally performed, the plate cylinder 2 is rotated in the clockwise direction, and at the same time, the plate feeding motor 41 is excited, so that the reversing roller pair 40 is rotated.
The rotation of the upper roller is stopped, and a load is applied to the plate-making master 16 to be wound around the outer peripheral surface of the plate cylinder 2, so that winding wrinkles are prevented from occurring. After exciting the plate feeding motor 41,
The upper roller of the reversing roller pair 40 is brought into a stopped (locked) state by receiving a holding load due to the excitation of the plate feeding motor 41, and the lower roller of the reversing roller pair 40 is rotated by the plate cylinder 2 to complete the mastermaking 2 It is rotated and driven by receiving the carrying force. Due to the rotational force of the plate cylinder 2, the plate-made master 16 stored in the flexible box 32 is pulled out and wound around the outer peripheral surface of the plate cylinder 2 without causing wrinkles or the like. At this time, the peripheral speed v of the plate cylinder 2 is sufficiently higher than the master transport speed v ′ by the platen roller 23 in the plate making apparatus 15 (v> v ′), and the controller 120 controls the main motor and the master transport motor. The rotation speed of 24 is controlled.

On the other hand, at the same time when the plate feeding operation is performed,
In the plate discharge device 66, the plate discharge operation is restarted, and the used master 16 corresponding to the rotation amount of the plate cylinder 2 is separated and conveyed from the outer peripheral surface of the plate cylinder 2 by the operation of the plate discharge peeling roller 67 and the plate discharge roller 68. Then, it is discharged to the plate discharge box 69 and discharged. On the other hand, the reading operation by the document reading device 70 and the writing operation by the plate making device 15 progress, the reading operation ends, and then the master transport motor 2
Master 16 that has already been plate-prepared for 1 plate by the number of steps of 4
When the control device 120 determines that the master printing has been performed, the master transport motor 24 is turned off by a command from the control device 120. As a result, the rotations of the master set roller 19, the platen roller 23, the tension roller pair 26, and the charge eliminating roller 27 are stopped, and the plate making (writing) operation is completed. At this time, the amount of flexure 16C of the master 16 that has been prepressed in the master storage means 30 is gradually reduced, and there is no room for the swelling 16D to occur, and the flexure is smaller than that shown in FIG. 15C, for example. 16C, and before the final flexure 16C of the plate-made master 16 disappears due to the rotation of the plate cylinder 2, that is, when the flexure amount of the plate-made master 16 becomes the minimum, the cutting is performed in step S4 of FIG. The action is taken. Details of the cutting operation are shown in the flowchart relating to the plate-making post-processing operation in FIG. The flow of FIG. 10 starts from step S15, and the operations from step S15 to step S21 represent the normal cutting operation.

In step S15 of FIG. 10, the cutter motor 219 is turned on and is driven to rotate normally or reversely (expressed as "(normal rotation → reverse rotation)" in step S15), so that the holder 213 is moved to the frame 212. Along with the reciprocating motion in the master width direction Y at a high speed, the upper and lower rotary blades 216a and 216b reciprocate at a high speed in the master width direction Y while rotating at a high speed, so that the rear end of the master 16 which has been plate-made can be moved. The operation of disconnecting is performed. At this time, in step S16, the control device 120 determines that the number of pulses from the encoder sensor 51 (hereinafter sometimes referred to as “moving pulse number”) is within a certain time set by a timer (not shown) incorporated therein. It is determined whether or not a predetermined number has been input to the CPU 121 (expressed as "Encoder pulse input?" In step S16). In other words, the movement speed when the holder 213 reciprocates at high speed in the master width direction Y by the forward rotation → reverse rotation drive of the cutter motor 219 is set in advance so as to be substantially constant. If reciprocating, the number of movement pulses output from the encoder sensor 51 will be within a certain range while the holder 213 is moving a certain distance within a certain time.

In step S16, when the holder 213 normally reciprocates at high speed in the master width direction Y, the number of pulses output from the encoder sensor 51 is incremented by 1 and the number of movement pulses A of the holder 213 (cutter member) is increased. The following calculation (when the cutter motor 219 is driven in reverse, the absolute value of the negative movement pulse number) is executed by the control device 120 (CPU 121) (step S17).
reference).

Next, in step S18, it is determined whether or not the number of movement pulses A ≧ the specified number of pulses. here,
The specified number of pulses means the holder 213 when the holder 213 reciprocates at high speed in the master width direction Y and the home position sensor 52 is turned on to occupy the original initial position.
It means the absolute value of the number of pulses during a normal cutting operation, which is output from the encoder sensor 51 during forward and backward movement, and is stored in the ROM 122 as data in advance. When the number of moving pulses A <the number of specified pulses, the series of processing operations from step S15 to step S18 described above are repeatedly executed.

When the number of movement pulses A ≧ the specified number of pulses, the holder 213 reciprocates in the master width direction Y at high speed, and at the same time, the upper and lower rotary blades 216a and 216b rotate in the master width direction Y at high speed. By reciprocating at a high speed, it is determined that after cutting the rear end of the plate-making master 16, the cutter motor 219 is turned off, so that the holder 213 stops at the initial position (step (See S19). Then, step S20
In, the number of movement pulses of the holder 213 is cleared by substituting 0 (zero) into the number of movement pulses A.

Next, in step S21, the rear end of the cut master 16 which has been plate-cut is the master front end sensor 29.
It is determined whether or not it is detected by (step S2
In No. 1, this is expressed as "master rear end detection / on?"). If the master leading edge sensor 29 is turned on and the trailing edge of the cut master 16 which has been plate-cut is detected, it is determined that a normal cutting operation has been performed.

When the cutter motor 219 is driven in the forward / reverse rotation so that the holder 213 reciprocates to cut the master 16, the suction fans 34a, 34 are always driven.
b and the blowing fan 35 are operating, and the suction fans 34a and 34b and the blowing fan 35 are controlled so as to reduce the respective air volumes in order to eliminate the fluttering of the master 16. Further, during the plate feeding by the reversing roller pair 40, in other words, regardless of whether the reversing roller pair 40 is rotated by the rotation of the reversing roller pair 40, the blowing fan 35 is operated while the plate-making master 16 is moving in the nip portion of the reversing roller pair 40. ing. The winding operation is completed when the cut master 16 which has been plate-cut is completely pulled out from the plate-making device 15 by the rotation of the plate cylinder 2 and wound around the outer peripheral surface of the plate cylinder 2. After the winding operation is completed, the blowing fan 35 and the suction fans 34a and 34b are turned off.

On the other hand, in the printing pressure device 14, the paper feeding operation is started in synchronization with the rotational movement operation in which the plate cylinder 2 occupies the home position. When the registration motor is turned on, the printing paper S is printed by the registration roller pair 64.
The paper clamper 12 is fed after being fed at a predetermined timing in synchronization with the rotation of the paper gripper 12
After the printing paper S is gripped, the paper gripper clamper 12 is closed, the impression cylinder 9 is rotated while the printing paper S is held on the outer peripheral surface of the impression cylinder 9, and the plate cylinder 2 and the impression cylinder 9 are rotated. The printing paper S is fed to the nip portion between and. In accordance with this timing, the outer peripheral surface of the impression cylinder 9 can be brought into contact with and separated from the outer peripheral surface of the plate cylinder 2. After the printing operation, the outer peripheral surface of the impression cylinder 9 is the plate cylinder 2.
Is separated from the outer peripheral surface of. The nip portion between the plate cylinder 2 and the impression cylinder 9 is pressed by the urging force of the elastic printing pressure spring (not shown) provided in the impression cylinder contacting / separating means, whereby the printing paper is printed. S is pressed by the master 16 that has been plate-formed and is wound around the outer peripheral surface of the plate cylinder 2. At the time of this pressing, the ink supplied to the inner peripheral surface of the plate cylinder 2 by the ink roller 6 bleeds through the perforated portion of the plate-finished master 16 on which the plate-making image has been formed, and this bleeding ink Is transferred to the surface of the printing paper S, and a printed image is formed.

The printed printing paper S on which the print image is formed is mounted on the paper discharge nail 82 and is peeled off when the pressure drum 9 rotates and the paper gripper 12 opens before the paper discharge nail 82. While being sucked by the suction fan 86, it is discharged onto the conveyor belt 85 located below. Conveyor belt 8
The printed printing paper S on 5 is conveyed by the rotation of the suction paper ejection outlet roller 84 while being sucked onto the conveyance belt 85 by the suction fan 86, and is ejected onto the paper ejection tray 81 to complete the so-called plate printing. To do. The printed matter discharged by this plate printing is not counted as a regular printed matter.

The printing operation and the paper discharge operation are performed as described above, and in the vicinity of the plate cylinder 2 occupying the plate feeding position, the winding of the master 16 for one plate, which has been completed for one plate, is completed on the plate cylinder 2. The plate feeding operation ends. Next, the printed printing paper S is ejected onto the paper ejection tray 81, and the trial printing (printing printing) is performed.
Ends. After this, the plate cylinder 2 rotates to the home position and stops at the home position.

After completion of the plate-making printing, the user appropriately views the discharged printed matter (printing paper S) to appropriately judge whether or not the normal printing operation may be performed, and confirms the image quality and confirms the image position. If the user presses the print start key 92 when the confirmation is appropriately performed and if these are OK, the same paper feed as described above is performed to feed and print the first printing paper S for normal printing. The operation, the printing operation, and the paper discharge operation are performed.

On the other hand, when the rotation operation of the registration roller pair 64 is stopped and the printing operation is completed, in the plate making device 15,
The guide transport plate 31 is displaced from the bending formation position and occupies the guide transport position shown in FIG. At the same time, when the master transport motor 24 is turned on, the master set roller 19, the platen roller 23, the tension roller pair 26, and the charge eliminating roller 27 rotate, and at the same time, the plate feeding motor 41
Is turned on and the reversing roller pair 40 is rotated,
The leading end of the master 16 of the next plate, which is cut by the holder 213, is transported to the downstream side of the master transport path XR while being guided by the guide transport plate 31 and the plate feed guide plate 42.
Then, when it is determined that the leading end of the master 16 of the next plate has occupied the plate-making standby position corresponding to the plate-making start position shown in FIG. 1 by the operation of the master conveying motor 24 and the plate feeding motor 41 for the predetermined number of steps. When the master transport motor 24 and the plate feed motor 41 are both turned off, the master set roller 19, the platen roller 23, the tension roller pair 26, the charge eliminating roller 27, and the reversing roller pair 40 are stopped from rotating, and the standby state is established. . Further, the thermal head 22 is separated from the platen roller 23. Also in the document reading device 70, the scanner motor and the like are turned on to move to the home position and then turned off.

Next, the operation mainly at the time of abnormality including the operation peculiar to the present invention will be described. According to the first embodiment, as described above, the peculiar blowing fan 35 and the suction fans 34a and 34b are actuated at the optimum time, so that the cut mistake and the cutter as shown in FIGS. It is possible to significantly reduce the jam of the master and the clamping error due to the lock as compared with the conventional one. However, it is assumed that dust and the like adhere to the blowing fan 35 and / or the suction fans 34a and 34b due to long-term use of the stencil printing machine 1, and the air blowing and / or suction ability thereof is deteriorated. Clamping errors may occur due to various causes as described above, and in such a case, arrow cutting errors, cutter locks, clamping errors, etc. are likely to occur. Given this, the operation at the time of abnormality will be described in detail below.

In step S21 of FIG. 10, the rear end of the cut master 16 which has been plate-cut is the master front end sensor 2
If it is determined by the controller 9 that the master tip sensor 29 remains off when it is detected by the controller 9,
In the case of 0, since the trailing end of the cut master 16 which has been plate-cut is not detected, it is determined that a cut error (see FIG. 15A) has occurred. Then, the control device 120 controls the guidance unit 95A and the auxiliary display unit 95B so as to display the cut mistakes of the master 16, so that the message indicating that the cut mistakes have occurred and their occurrence contents are
They are displayed on the guidance section 95A and the auxiliary display section 95B of the liquid crystal display section 95 (see step S26).

On the other hand, in step S15 of FIG. 10, the cutter motor 219 is turned on (forward rotation → reverse rotation), and in step S16, the control device 120 moves from the encoder sensor 51 within the fixed time set by the timer. When the predetermined number of pulses has not been input to the CPU 121 (timeout), it is determined that the holder 213 is in the locked state, and the cutter motor 219 is turned off, so that the holder 213 temporarily stops at the locked position (see step S22). ). Steps S22 to S
The processing operations up to 25 represent the locked state of the holder 213, and the basic control function of the control device 120, the first
And the second control function is mainly used.

Next, the controller 120 immediately drives and controls the cutter motor 219 so that the holder 213 returns to the initial position so as to rotate in the reverse direction, and the home position sensor 5
When 2 is turned on, it is determined that the holder 213 has returned to the initial position, and the cutter motor 219 is turned off (see steps S23 to S25). In step S24, when the home position sensor 52 is off, the cutter motor 219 is reversely driven / on-driven until the home position sensor 52 is turned on (see steps S23 to S24).

After that, the master set roller 19, the platen roller 23, the tension roller pair 26, and the charge eliminating roller 27 drive the master carrying motor 24 in the normal direction so that the master 16 is carried again downstream in the master carrying direction X. Control or reversely to the above, the master conveyance motor 24 is reversely rotated so that the master 16 is conveyed to the upstream side in the master conveyance direction X by the master set roller 19, the platen roller 23, the tension roller pair 26 and the charge eliminating roller 27. The cutter motor 219 is driven and controlled, and then the cutter motor 219 is driven and controlled in the forward and reverse directions so that the holder 213 reciprocates to cut the master 16. Here, the feed amount of the master 16 to which the master 16 is conveyed again varies depending on the lock position of the holder 213, which will be described with reference to the flowchart relating to the re-master conveyance pretreatment operation shown in FIG. In the remastered transport pretreatment operation, the third and fourth control functions of the control device 120 are mainly used.

The flow of FIG. 11 starts from step S30. In step S30, the symbol B indicates the number of determination pulses for driving the master transport motor 24 in the forward or reverse rotation (hereinafter referred to as "master transport motor forward / reverse rotation determination pulse number B"). The master conveyance motor forward / reverse rotation determination pulse number B is preset by an experiment or the like and is stored in advance in the ROM 122 of the control device 120. In step S30, the number A of movement pulses representing the position of the holder 213 ≧ the number B of pulses for determining the forward / reverse rotation of the master conveyance motor B
Is determined. When the movement pulse number A is smaller than the master conveyance motor forward / reverse rotation determination pulse number B,
That is, in the lock at the initial cutting position stage where the lock position of the holder 213 is less than half of the master 16 in the plate width direction, the process proceeds to step S32, the flexure 16C is eliminated, and then the master 16 is completed. Is selected (in step S32, it is expressed as "selecting the feed amount for master transport again"). The feed amount at the time of carrying the master again is preset by an experiment or the like, and is set in the ROM 1 of the control device 120.
22 is stored in advance.

Next, the master carrying motor 24 is driven in the normal direction and driven by the number of pulses related to the feed amount for master carrying again selected by the control device 120. As a result, the master set roller 19, the platen roller 23, the tension roller pair 26, and the charge eliminating roller 27 should rotate in the directions of the arrows shown in FIG. 2 in correspondence with the amount of normal rotation / drive of the master transport motor 24. As a result, the master 16 is transported again to the downstream side in the master transport direction X (see step S33).

Then, the process proceeds to step S34, and the same cutting operation as shown in steps S15 to S21 of FIG. 10 is performed. In the cutting operation at this time, the cut master pieces are inevitably shorter than the original length of the master 16 of the first version (called a “strip”). Therefore, the liquid crystal display unit 9 displays a message indicating that there are cut master pieces in the plate-making device 15 and the location of those pieces.
5 are displayed on the guidance section 95A and the auxiliary display section 95B (see step S35).

On the other hand, in step S30, when the movement pulse number A is greater than or equal to the master conveyance motor forward / reverse rotation determination pulse number B, that is, the holder 213.
When the lock position of the master 16 is a half-cut in the master width direction Y of the plate-making master 16 or more, the process proceeds to step S31 and the master transport motor 24
Then, a selection for reverse driving is made, and thereafter, the same step S32 as described above is performed, and the feed amount when the plate-making master 16 is conveyed again after eliminating the bending 16C is selected.

Next, the master transport motor 24 is driven in the reverse direction and driven by the number of pulses related to the feed amount for master transport again selected by the control device 120. As a result, the master set roller 19, the platen roller 23, the tension roller pair 26, and the charge eliminating roller 27 are moved in the directions opposite to the respective arrow directions shown in FIG. By rotating, the master 16 is conveyed to the upstream side in the master conveyance direction X (step S3).
3).

Next, in step S34, the same cutting operation as that shown in steps S15 to S21 of FIG. 10 is performed. In the cutting operation at this time, the cut master pieces are inevitably shorter than the original length of the master 16 of the first version (called a “strip”). Therefore, the liquid crystal display unit 9 displays a message indicating that there are cut master pieces in the plate-making device 15 and the location of those pieces.
5 are displayed on the guidance section 95A and the auxiliary display section 95B (see step S35).

Next, the flow of the cutter operation post-processing shown in FIG. 12 will be described. In the cutter operation post-processing, the eighth and ninth control functions of the control device 120 are used. Figure 1
The flow shown in 2 starts from step S40. In step S40, an operation similar to the flow of the clamp operation preprocessing of FIG. 9 showing the details of the plate supply and the clamp operation is performed, and then, in step S41, as in step S12 of the flow of FIG. The master presence / absence sensor 54 determines the presence / absence of the plate-making master 16 on the plate cylinder 2, that is, whether or not a clamp error has occurred (in step S41, it is expressed as "clamp error?"). In step S41, when the master 16 is present on the plate cylinder 2, the plate cylinder master presence / absence sensor 54 is turned on, and the control device 120 receives this signal and determines that the normal clamping operation has been performed, and the steps S15 to S15 of FIG. Step S
The same cutting operation as shown in 21 is performed (see step S42).

On the other hand, in step S41, when there is no master 16 on the plate cylinder 2 which has been prepressed, the plate cylinder master presence / absence sensor 54 is turned off, and the control device 12 receives this signal.
0 determines that a clamp error or jam has occurred in which the tip of the master 16 that has been prepressed by the clamper 4 is not held, and controls the main motor to stop / interrupt the master winding operation due to the rotation of the plate cylinder 2. At the same time, the pair of reversing rollers 40 feeds the master 16 just for plate making toward the clamper 4 of the plate cylinder 2 by a predetermined amount (the rear end of the master 16 is detected by the master front end sensor 29, and the rear end of the master 16 is The plate feeding motor 41 is turned on so that the master leading edge sensor 29 is removed. As a result, the master 16 that has been prepressed is fed by a predetermined amount toward the plate cylinder 2 side.

Then, the cutter motor 219 is driven to rotate in the forward and reverse directions so that the holder 213 moves in the master width direction Y and cuts the master 16 that has been prepressed, whereby master fragments of the jammed master 16 occur. At the time of such a clamp error, the guidance section 95A and the auxiliary display section 95B appropriately indicate on which side of the plate making apparatus 15 and the other main body frame 1A the master fragments are present (see step S43 to step S45). ).

Conventionally, when a clamp error occurs,
Assuming that the user is facing the stencil printing machine 1 on the front side of the paper surface of FIG. 1 in order to pull out the plate cylinder unit and perform an operation such as a jam treatment, the user pulls out the plate cylinder unit from the main frame 1F. Even when the inside of the master 16 is checked, the master 16 which has been erroneously clamped has poor visibility and often cannot be seen well. However, in the first embodiment, as described above, the reversing roller pair 40 directs the plate-making master 16 toward the clamper 4 of the plate cylinder 2, and the master front end sensor 29 detects the rear end of the master 16 and the master 16 Since a relatively large amount is sent until the trailing edge of the trailing edge passes through the master leading edge sensor 29, the visibility is improved from the user's side of operation, and the master leading edge sensor 29 does not turn on after that, so that the control can be easily configured.

(Second Embodiment) FIGS. 13 and 14 show a second embodiment. In FIG. 1, reference numeral 1A shown with parentheses indicates a stencil printing apparatus according to the second embodiment, and reference numeral 15A also shown with parentheses indicates the same as that of the plate making apparatus according to the second embodiment. 120A represents each control device of the second embodiment. The stencil printing machine 1A is shown in FIG.
In comparison with the stencil printing machine 1 of the first embodiment, as shown in FIG.
The only difference is having.

Compared with the plate making apparatus 15 in the first embodiment, the plate making apparatus 15A has an encoder 56 in place of the encoder 50, and an encoder sensor 57 in place of the encoder sensor 51, as shown in FIG. The main difference is that it has and that the home position sensor 52 is removed.

Encoder 56 and encoder sensor 5
7 detects the absolute rotation amount and rotation position of the cutter motor 219, as shown in FIG.
The position detecting means for detecting the absolute position of the holder 213 having the lower rotary blades 216a and 216b is configured. That is, the encoder 56 and the encoder sensor 57
Constitutes an absolute type pulse encoder (hereinafter, referred to as “absolute type pulse encoder”) capable of detecting an absolute position including an initial position and a lock position of the holder 213. In the second embodiment, the encoder 56 and the encoder sensor 57 are connected to the cutter motor 2
The feature is that it is provided on the 19 side.

The encoder 56, as shown in FIG.
It is a multi-channel photo encoder in which a large number of slits are radially arranged in multiple stages on the outer peripheral portion, and the cutter motor 2
The output shaft 219b of 19 is attached and fixed. The encoder sensor 57 is composed of a plurality of encoder sensors 57a, 57b, 57c fixedly provided on the plate-making side plate pair side with the outer peripheral portion of the encoder 56 interposed therebetween, and these are collectively referred to as an encoder sensor 57.

FIG. 14 shows a control configuration characteristic of the second embodiment. The control configuration of the second embodiment has an encoder sensor 57 instead of the encoder sensor 51, the home position sensor 52 is removed, and the control device 12 is different from that of the first embodiment shown in FIG.
The main difference is that the controller 120A is provided instead of 0. The control device 120A is the control device 12 of the first embodiment.
It has a microcomputer similar to that of 0. The control device 120A has a CPU compared to the control device 120.
The difference is that a CPU 121A is provided instead of the 121, and a ROM 122A is provided instead of the ROM 122.

The CPU 121A of the control device 120A (hereinafter sometimes simply referred to as "control device 120A")
In the above-described first to ninth control functions of the control device 120, “encoder 50” is replaced with “encoder 56”,
"Encoder sensor 51" is replaced with "Encoder sensor 57"
And the home position sensor 52 is deleted and replaced. ROM1
22A stores in advance programs, data, and the like for performing characteristic operations that are substantially the same as those shown in the flowcharts shown in FIGS. 8 to 12 for the control of the control device 120A. ing.

The control operation in the second embodiment is performed by the encoder 50 and the encoder sensor 51 in the first embodiment.
Also, the only difference is that the position detection of the holder 213 by the home position sensor 52 is performed by one of the absolute type pulse encoders, and since it is technically obvious, further detailed description will be omitted. In the above description of the operations in the flowcharts of FIGS. 8 to 12, “encoder 50” is replaced with “encoder 56” and “encoder sensor 51” is replaced with “encoder sensor 57”, and steps S18 and S24 of FIG. 10 are performed. At "Home Position Sensor 52 On"
Can be read as "the number of pulses corresponding to when the holder 213 occupies the initial position was output from the encoder sensor 57". Therefore, according to the second embodiment,
In addition to the effects to be described later in the first embodiment, the number of parts in the control configuration can be reduced although the current technical level requires expensive and complicated control.

The operation examples of the first and second embodiments are not limited to those described above, and are based on the timing charts shown in FIGS. 7, 8 and 9 of JP 2001-150786 A, for example. The operation of the specific configuration of the first and second embodiments may be reflected by folding. In addition, the first and second embodiments
In FIG. 12 and FIG. 2 of Japanese Patent Laid-Open No. 2001-150786, an electromagnetic clutch is used instead of the plate feeding motor 41.
Based on the timing chart shown in FIG. 2, the operation due to the unique configuration of the first or second embodiment may be reflected by folding.

The master 16 is not limited to the above-mentioned one using Japanese paper fiber as the base, but has a thickness of 0.5 to 3 μm, for example.
, A master substantially consisting of a thermoplastic resin film, a master in which the thickness of the base of the master 16 is thin, or a composite as described in, for example, JP-A-11-77949 proposed by the applicant of the present application. A fiber-based master may be used, or the swelling 16D of the master 16 at the time of plate feeding caused by using a master in which a molten resin is applied to the film to integrally form a resin film on the film, Embodiment 1 by effectively preventing the rising 16D
It is possible to obtain the effects described later due to No. 2 and No. 2. In the first and second embodiments and the like, the master 16 is provided so as to be able to be fed out from the master roll 16A wound in the film plane. For the swelling 16D of the master 16 at the time of plate feeding that occurs in a low humidity environment, for example, the swelling 16D can be effectively prevented and the effects described below can be obtained.

The plate making means is not limited to the thermal head 22 of the first and second embodiments, but may be replaced by a plate making means such as flash plate making or laser plate making.
The master storage unit 30 is not limited to this, and may be, for example, JP 20
As shown in FIGS. 1 and 2 and the like of Japanese Patent Publication No. 01-150786, there is only one switch for folding back the master 16 that has been prepressed, or plate feeding even in the vicinity of the inlet of a flexible box having two masters. Since the swelling 16D at the time occurs to some extent, it can be applied to a plate making apparatus or a plate making printing apparatus equipped with such a bending box. Further, the plate-making printing apparatus equipped with the plate-making apparatus according to the present invention is not limited to the stencil printing apparatuses 1 and 1A described above, and is, for example, Japanese Patent Laid-Open No. 7-1.
The printing apparatus may be configured to supply ink from the outside of the plate cylinder as shown in Japanese Patent Publication No. 7013.
It can be effectively applied to a case where the plate making apparatus constitutes a plate making section unit and the whole plate making section unit can be attached and detached as in the technique described in JP-A-10-202996.

[0161]

As described above, according to the present invention,
It is possible to solve the conventional problems and provide a novel plate making apparatus and a plate making printing apparatus having the same. The effects of each claim are as follows. According to the invention described in claims 1 to 4, since the position detecting means for detecting the position of the rotary blade is provided on the cutting drive means side, it is relatively possible to detect the position of the rotary blade stopped by the cutter lock or the like. Since it becomes possible for the control means to judge based on the output from the position detection means having a simple structure, for example, the number of pulses output from the encoder sensor, it is possible to prevent jams due to cutter lock or cutter mistakes or clamp mistakes. It is possible to reduce waste of the master.

According to the invention described in claims 5 to 9, it is possible to reduce troubles such as a cutter lock, a cutter error, a clamp error, or the like, which causes a jam, and waste of the master.

According to the tenth aspect of the present invention, the control means causes the rotary blade to move forward again to cut the master, and then causes the notifying means to notify that the cut piece of the master is in the plate making device. Therefore, when a clamp error occurs, the recognition (visibility etc.) of the cut piece of the master is improved and the jam processing can be easily performed.

According to the eleventh aspect of the present invention, in addition to the effects of each of the above-mentioned aspects, the cutting drive control means is provided near the master inlet to the master storage means and prevents the rising of the master by blowing air. By controlling the cutting drive means so that the rotary blade moves in the master width direction and cuts the master while using the blowing means to blow air, the rise of the master is prevented and the master near the inlet of the master storage means Since the master can be cut while the behavior is stable, it is possible to further reduce the trouble of jam occurrence due to cutter lock, cutter mistake or clamp mistake, and waste of the master.

According to the twelfth aspect of the present invention, the blowing fan and the suction fan that are not in contact with the master near the entrance of the master to the master storage means can be controlled independently, and can be controlled under predetermined conditions. Therefore, in addition to the effect of the invention described in claim 11, for example, by operating the suction fan before the blowing fan, the bending of the master due to the suction action of the suction fan is stably formed, or the plate making thereof is performed. It is also possible to perform variable control of the air volume according to the plate making speed peculiar to the apparatus and the size of the master.

According to the thirteenth aspect of the present invention, there is provided the plate feeding means for feeding the plate-made master, and the plate feeding driving means for driving the plate feeding means. Therefore, any one of claims 1 to 12 is provided. In addition to the effect of the invention described in one aspect, when the plate making apparatus is mounted on, for example, a plate making printing apparatus equipped with a plate cylinder and pressing means, it is possible to feed the master made into the plate cylinder. .

According to the fourteenth aspect of the present invention, the plate feeding cutting control means directs the master made by the plate feeding means to the holding means at the time of a clamp error in which the leading end of the master made by the holding means is not held. 14. The invention according to claim 13, wherein the plate feed drive means is driven to feed a predetermined amount, and the cutting drive means is driven so that the rotary blade moves in the master width direction to cut the master. In addition to the effect, the recognizability including the visibility of the master cut piece (master shard) when a clamp error occurs is improved, and the jam processing can be easily performed.

According to the fifteenth aspect of the present invention, the jam notification means for notifying whether the jammed master exists in the plate making apparatus or the plate making printing apparatus is provided.
Since it is possible to clearly recognize where the jammed master is, the jam processing can be performed more easily.

[Brief description of drawings]

FIG. 1 is a schematic front view of a stencil printing machine showing a first embodiment of a plate making printing machine according to the present invention.

FIG. 2 is an enlarged front sectional view of a plate making apparatus of the stencil printing apparatus in FIG.

FIG. 3 is a perspective view of a main part of the plate making device in FIG. 1.

FIG. 4 is an enlarged side view showing the periphery of a cutter unit of the plate making apparatus in FIG.

5 is a front view around the cutter unit of the plate making apparatus in FIG. 2. FIG.

FIG. 6 is a plan view of an operation panel of the stencil printing apparatus in FIG.

7 is a block diagram showing a control configuration of the stencil printing apparatus in FIG.

FIG. 8 is a flowchart of a master transport post-processing operation according to the first embodiment and the like.

FIG. 9 is a flowchart of a clamp operation preprocessing operation according to the first embodiment and the like.

FIG. 10 is a flowchart relating to a post-plate making processing operation in the first embodiment and the like.

FIG. 11 is a flowchart relating to a remaster transport preprocessing operation in the first embodiment and the like.

FIG. 12 is a flowchart of a post-cutter operation processing operation according to the first embodiment.

FIG. 13 is a perspective view of a main part around a cutter motor and a pulse encoder in the second embodiment.

FIG. 14 is a block diagram showing a control configuration of a stencil printing machine according to a second embodiment.

FIG. 15 is a front view of a main part of a plate making device for explaining a conventional problem.

[Explanation of symbols]

1, 1A Stencil printing device 2 as a plate making printing device 2 Plate cylinder 4 Clamper 9 as a holding means 15 Cylinder as pressing means 15, 15A Plate making device 16 Master 16a Film surface 16b Japanese paper fiber surface 16C as a base surface side Deflection of master 16D Swelling of master 19 Master set roller 22 as a conveying means 22 Thermal head 23 as a plate making means A platen roller 24 as a conveying means A master conveying motor 26 as a conveying driving means 26 A tension roller pair 27 as a conveying means A discharging roller as a conveying means 28 Cutter Unit 29 Master Tip Sensor 30 as Master Detection Means 30 Master Reserving Means 32 Deflection Box 32a Opening 33a, 33b, 33c as Master Inlet to Master Reserving Means Bending Ducts 34a, 34b, 34c as Folding Reservoir Suction Fan 35 Blowing fan 40 as blower 40 Reversing roller pair 41 as plate feeding means Plate feeding motor 50 as plate feeding driving means Incremental encoder 51 constituting position detecting means Encoder sensor 52 constituting position detecting means Home position Home position sensor 54 as detection means Plate cylinder master presence / absence sensor 56 Absolute encoder 57 that constitutes position detection means Encoder sensor 60 that constitutes position detection means Paper feeding device 90 Operation panel 95 Cut error notification means, notification means, jam Liquid crystal display unit 95A as notifying means Cut miss notifying unit, notifying unit, guidance unit 95B as jam notifying unit Cut miss notifying unit, notifying unit, auxiliary display unit 96 as jam notifying unit As cut miss notifying unit, jam notifying unit Jam occurrence display lamps 120, 120A, control device 213 as control means, cutting drive control means and plate feed cutting control means 213 cutting means, holders 216a, 216b as cutter members upper and lower rotary blades 219 cutter motor as cutting drive means S Printing paper X Master transport direction XR Master transport path Y Master width direction

Claims (15)

[Claims] 1. A plate making means for making a master capable of feeding out, a carrying means for carrying the master made by the plate making means to a downstream side in the master carrying direction, a carrying driving means for driving the carrying means, A cutting unit provided downstream of the plate making unit in the master carrying direction and provided with at least one rotary blade for moving the master width direction orthogonal to the master carrying direction to cut the master, and driving the cutting unit. A plate making apparatus having a cutting drive means for controlling the position of the rotary blade, the position detecting means being provided on the side of the cutting drive means. 2. The plate making apparatus according to claim 1, wherein the position detecting means includes an incremental type pulse encoder having an encoder sensor, and home position detecting means for detecting an initial position of the rotary blade. Characteristic plate making equipment. 3. The plate making apparatus according to claim 1, wherein the position detecting means includes an absolute type pulse encoder having a plurality of encoder sensors. 4. The plate making apparatus according to claim 2 or 3, further comprising control means for judging a locked state or the like of the rotary blade based on the number of pulses output from the encoder sensor. . 5. The plate making apparatus according to claim 4, wherein the rotary blade can reciprocate in the master width direction from an initial position of the rotary blade, and the cutting drive means can rotate forward and backward. When the cutting means is in the locked state, the means reversely drives the cutting driving means so that the rotary blade returns to the initial position, and then the conveying means causes the master to move downstream in the master conveying direction. A plate making apparatus, characterized in that the conveying drive means is driven so as to be conveyed again to the side, and then the cutting drive means is driven in the normal direction so that the rotary blade moves forward to cut the master. 6. The plate making apparatus according to claim 5, wherein the feed amount of the master to which the master is conveyed again varies depending on the lock position of the rotary blade. 7. The plate making apparatus according to claim 5, wherein the master detecting means is provided downstream of the cutting means in the master conveying direction and detects a trailing end of the cut master, and a master cut error. And the like, and the control means determines that there is a cut mistake when the master detection means does not detect the rear end of the master after the normal rotation driving of the cutting drive means. A plate making apparatus characterized in that the cut error notification means is used to notify the master of cut errors and the like. 8. The plate making apparatus according to claim 5 or 6, further comprising a master detecting unit provided downstream of the cutting unit in the master conveying direction to detect a rear end of the cut master, The means, after the normal rotation drive of the cutting drive means, when the master detection means does not detect the rear end of the master, it is determined that there is a cut error, the transfer means moves the master to the downstream side in the master transfer direction. A plate making apparatus, characterized in that, after driving the carrying driving means so as to be carried again, the cutting driving means is driven in the normal direction so that the rotary blade moves forward again to cut the master. 9. The plate making apparatus according to claim 5 or 6, further comprising a master detecting unit provided downstream of the cutting unit in the master conveying direction for detecting a trailing end of the cut master, The means is capable of transporting the master upstream in the master transport direction, the transport drive means is capable of forward and reverse rotation, and the control means is configured to operate after the forward drive of the cutting drive means. When the master detection unit does not detect the rear end of the master, it is determined that a cut error has occurred, and the conveyance drive unit is reversely driven so that the conveyance unit conveys the master to the upstream side in the master conveyance direction. After that, the plate making apparatus is characterized in that the cutting drive means is driven in the normal direction so that the rotary blade moves forward again to cut the master. 10. The plate making apparatus according to claim 9, further comprising an informing means for informing that a cut piece of the master is present in the plate making apparatus, and the control means is arranged such that the rotary blade retreats again to move the master. After cutting, the plate making apparatus is characterized by making the notifying means notify that the master cut piece is in the plate making apparatus. 11. The plate making apparatus according to any one of claims 1 to 10, wherein a master storing means for storing the master made by the plate making means, and a master storage means provided in the vicinity of an inlet of the master. The
A blower that prevents the rise of the master by blowing air, and a cutting that controls the cutting drive unit so that the rotary blade moves in the master width direction and cuts the master while blowing air by using the blower. A plate making apparatus comprising: a drive control unit. 12. The plate making apparatus according to claim 11, wherein the master storing means forms a flexure in a flexure formed in the plate-making master and stores the flexure in the master made in the flexure box. In order to do so, a suction fan that sucks air in the flexible box is provided, and the blower unit is a blower fan that is not in contact with the master near the inlet, and the blower fan and the suction fan are independent of each other. A plate-making apparatus that is controllable and that changes control under predetermined conditions. 13. The plate making apparatus according to any one of claims 1 to 12, further comprising: a plate feeding unit that feeds the plate-made master; and a plate feeding driving unit that drives the plate feeding unit. A plate making device characterized by: 14. A plate making printing apparatus comprising: a plate cylinder around which a master made by plate making is wound; and pressing means for relatively pressing a printing sheet against the master on the plate cylinder. The plate cylinder has a holding means for holding the leading end of the master made by plate making, and the plate feeding means makes the plate making at the time of a clamping error in which the leading end of the master made by the holding means is not held. After driving the plate feeding drive means so as to feed a predetermined amount of the master toward the holding means, the cutting drive means is operated so that the rotary blade moves in the master width direction to cut the master. A plate making / printing apparatus comprising a plate feed cutting control means for driving. 15. The plate-making printing apparatus according to claim 14, further comprising a jam notifying unit for notifying whether the jammed master exists in the plate-making apparatus or the plate-making printing apparatus.