JP2002127580A - Stencil printing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent unstableness of performances of feeding and delivery due to an excessive shift of the timing of feeding, staining of a press roll due to excessive lateral transfer of a plate cylinder or the like and others and to regulate an image position of a printing medium. SOLUTION: A stencil printing apparatus has a plate cylinder position shift control means which enables vertical and lateral relative shift of the position of the plate cylinder in relation to printing paper, an image position shift control means which enables vertical and lateral shift of the position of an image to be plated on stencil paper and a printing position regulating key which enables input of the amount of vertical and lateral shift of the image position in relation to the printing paper. When the amount of the vertical and/or lateral shift is inputted by the printing position regulating key before a plate-making operation is started, an operation of varying the position of the image to be plated on the stencil paper is executed by the image position shift control means, and when the amount of the vertical and/or lateral shift is inputted before the start of a printing operation or in this operation, an operation of varying the relative position of the plate cylinder is executed by the plate cylinder position shift control means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil sheet made of stencil, which is mounted on a plate cylinder, and the printing medium is pressed against the outer peripheral surface of a rotating plate cylinder to be conveyed. The present invention relates to a stencil printing apparatus for transferring.

[0002]

2. Description of the Related Art In a stencil printing apparatus, a stencil sheet is perforated by heat with a thermal head based on image data, the stencil sheet thus formed is wound around an outer peripheral surface of a plate cylinder, mounted, and the plate cylinder is rotated. The printing paper (printing medium) is pressed against the outer peripheral surface of the plate cylinder and conveyed in synchronization with the rotation timing of the cylinder, and the ink oozing from the perforations of the stencil paper is transferred to the printing paper in the pressing and conveying process to transfer the printing paper to the printing paper. It is known that printing is performed by forming an ink image. Such a stencil printing apparatus is often provided with a top and bottom adjustment unit for adjusting the image position in the vertical direction (top and bottom) of the printing paper, and a left and right adjustment unit for adjusting the image position in the left and right direction of the printing paper. .

[0003] The conventional top-bottom adjustment means varies the feed timing of the printing paper with respect to the rotation of the plate cylinder. If the feeding timing of the printing paper is delayed with respect to the rotation timing of the plate cylinder, the image position is shifted to the top. When the paper feed timing is advanced with respect to the rotation timing of the plate cylinder, the image position is moved in the ground direction.

Conventional left-right adjustment means include a method in which a plate cylinder is movably provided in a direction perpendicular to the direction in which the printing paper is conveyed, and a method in which the paper feed table is moved in a direction perpendicular to the direction in which the printing paper is transported. There is a method of providing it freely. As a method of moving the plate cylinder, for example, moving the plate cylinder in the front direction moves the image position to the right, for example, and moving the plate cylinder in the back direction moves the image position to the left, for example. on the other hand,
For example, moving the paper feed tray in the front direction moves the image position to the left, for example, and moving the paper feed tray in the back moves the image position to the right, for example. I do.

[0005]

However, in the above-mentioned conventional top-and-bottom adjustment means, since the feeding timing of the printing paper to the plate cylinder is made variable, if the feeding timing is shifted too much, the stable feeding and discharging will be performed. Paper performance cannot be ensured. In particular, when the sheet is adjusted in the top direction, paper ejection jamming is likely to be induced.

In the conventional left-right adjustment means, the relative position between the printing paper and the plate cylinder is variable. If the relative movement is too large (over-movement), the printing pressure is applied to the plate cylinder. Problems such as contamination of the press roll occur.

In a conventional stencil printing apparatus, when a continuous mode in which a stencil making operation and a printing operation are continuously repeated is selected, it may be desired to perform the same vertical and horizontal adjustments on a plurality of originals. For example, when a margin is provided on the left side of the printing paper to provide a binding margin for a plurality of documents, or when there is a ruled line at the top of the document, the image position needs to be slightly lowered, and the image position is lowered in the ground direction. It is.

Japanese Patent Application Laid-Open No. 7-1817 proposes a convenient means for adjusting the top, bottom, left and right in such applications. This means automatically returns the plate cylinder to a reference position (center position) each time one plate making / printing operation is completed, and automatically moves the plate cylinder to a predetermined adjustment position at the start of printing. . This eliminates the need to return the plate cylinder to the reference position for each plate-making operation to execute the plate-making operation or to input an adjustment amount for each plate-making operation.

However, every time a plate is made in the continuous mode, the plate cylinder returns to the reference position and moves to the predetermined adjustment position again at the start of printing, so that there is a problem that the total printing time becomes very long.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it has been found that the paper feed / discharge performance is unstable due to an excessive shift of the paper feed timing and the press due to the excessive movement of the plate cylinder in the left-right direction. An object of the present invention is to provide a stencil printing machine capable of adjusting the image position of a printing medium while preventing various inconveniences caused by mechanical overshifting such as contamination of a roll.

Another object of the present invention is to provide a stencil printing apparatus capable of reducing the total printing time when the image position of a printing medium is adjusted in a continuous mode in which plate making and printing are repeated.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a stencil printing apparatus according to the present invention comprises a stencil making section for making a stencil based on image data, and a stencil made by the stencil making section. A printing cylinder fed in synchronization with the rotation of the plate cylinder and pressed against the outer circumference of the plate cylinder to print an image on the printing medium at a predetermined image position. And a vertical / left / right moving amount input unit for inputting moving amount information indicating a moving amount of the image position with respect to the print medium in the vertical and / or left / right directions. Plate cylinder position moving means for moving the position of the plate cylinder relative to the print medium in the top and bottom and / or left and right directions based on the movement amount information, and movement amount information from the top and bottom / left and right movement amount input means Based on the stencil paper Image position moving means for controlling the stencil making unit to move the image position to be stenciled in the vertical and / or right and left directions, and the stencil making the stencil based on the image data on the stencil in the stencil making the stencil If the movement amount information is input from the top / bottom / left / right movement amount input means before the stencil making operation to form a plate on the plate cylinder, the image position moving means moves the image position to be made on the stencil sheet by the image position movement means. When the movement amount information is input after the start of the plate making operation but before the start of the printing operation and at the time of the printing operation, the relative position of the plate cylinder is moved by the plate cylinder position moving means. And control means for controlling so as to perform the control.

In the stencil printing apparatus, when performing vertical / horizontal movement adjustment before the start of the stencil making operation, the image position of the stencil sheet is changed by the image position movement control means. When performing vertical / horizontal movement adjustment during the printing operation, the relative position of the plate cylinder with respect to the print medium is changed by the plate cylinder position movement control means.

Further, in the stencil printing machine according to the present invention, the control means may be arranged so that when a continuous mode in which the plate making operation by the plate making section and the plate cylinder and the printing operation by the printing section are continuously repeated is selected. Controls the image position to be moved by the image position moving means each time a stencil sheet is made on the basis of new image data. In the stencil printing apparatus, in the continuous mode, when performing stencil making with new image data, the image position of the stencil sheet is changed to change the image position of the printing medium.

Further, in the stencil printing machine according to the present invention, the image position moving means moves the image position by adjusting the stencil making timing by the stencil making section.

Still further, in the stencil printing machine according to the present invention, the plate cylinder position moving means adjusts the timing at which the printing unit feeds the printing medium to the plate cylinder to move the image position vertically. Do.

Further, in the stencil printing machine according to the present invention, the image data used for plate making in the plate making section is data read by a document reading section.

Still further, in the stencil printing machine according to the present invention, the image data used for the stencil making of the stencil making unit is data transmitted from an externally connected information terminal device.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 13 show an embodiment of the present invention, and FIG. 1 is a schematic configuration diagram of a digital stencil printing apparatus.

In FIG. 1, the digital stencil printing apparatus mainly comprises a document reading section 1, a plate making section 2, a printing section 3, a paper feeding section 4, a paper discharging section 5, and a plate discharging section 6.

The document reading section 1 has an automatic document feed / read section 7 for automatically feeding a document to obtain image data, and a document placing / reading section 8 for obtaining image data from a placed document.

The automatic document feeder / reader 7 includes an obliquely inclined original plate 9 on which the original is placed, a pair of original transport rolls 10 for transporting the original placed on the original inclined plate 9, and a transported original. A line image sensor 11 converts the content into an electric signal to obtain image data. The line image sensor 11 is also used as the one of the original placing / reading unit 8.

The original placing and reading section 8 includes a horizontal original placing glass table 12 on which an original is placed, and an original placing glass table 12.
A pressure plate (not shown) provided to be openable and closable above, and a guide belt 15 which is arranged below the original placing glass table 12 and is moved by a driving force of a read pulse motor (not shown).
And a line image sensor 11 that moves below the original placing glass table 12 under the guidance of the guide belt 15.

In the automatic document feeder / reader 7, the line image sensor 11 is located at the substantially right end in FIG. The original placing / reading unit 8 reads the contents of the original by moving the line image sensor 11 guided by the guide belt 15 and scanning under the original. As a result, the automatic original feed reading unit 7 and the original placing reading unit 8 generate image data to be subjected to plate making processing.

The stencil making section 2 includes a stencil container 17 for accommodating a rolled long stencil sheet 16 and a thermal head, which is a writing head disposed downstream of the stencil sheet 16 in the conveying direction of the stencil sheet 16. A platen roll 1 disposed at a position facing the head 18 and the thermal head 18 and rotated by a driving force of a write pulse motor (not shown);
9, a pair of stencil feed rolls 20 arranged downstream of the platen roll 19 and the thermal head 18 in the transport direction of the stencil sheet 16 and rotated by the driving force of a write pulse motor (not shown); A pair of base paper feed rolls 21 disposed further downstream of the roll 20;
And a document cutter 22 disposed downstream of the pair of base paper feed rolls 20 for conveyance.

The thermal head 18 has a plurality of point heating elements arranged in a direction perpendicular to the direction of transport of the stencil sheet 16, and drives each point heating element based on image data. Since the maximum printing paper is A3, the thermal head 18 in this example is configured by arranging dot heating elements over the range of the A3 width.

The stencil sheet 16 is conveyed by the rotation of the platen roll 19 and the stencil feed rolls 20 and 21, and each point heating element of the thermal head 18 selectively generates heat based on image data read by the line image sensor 11. When the stencil sheet 16 is operated, the stencil sheet 16 is heat-sensitively perforated to form a stencil sheet, and a stencil sheet 22 having a predetermined length is formed by cutting the downstream portion of the stencil sheet 16 having been made by the stencil cutter 22.

The printing section 3 is formed of an ink-permeable member having an outer peripheral portion having a porous structure. The printing cylinder 3 is rotated by a driving force of a main motor (not shown) in a direction indicated by an arrow A in FIG. The stencil sheet 1 provided on the outer peripheral surface of the cylinder 25
And a clamp part 26 for clamping the tip of the sixth part.

The printing unit 3 includes a squeegee roll 30 and a doctor roll 31 disposed inside the plate cylinder 25.
And an ink supply unit (not shown) for supplying ink 32 between the two rolls 30 and 31, and the printing paper 34 conveyed in synchronization with the rotation of the plate cylinder 25, and the stencil sheet 16 of the plate cylinder 25. Roller 35 for pressing the roller and press roll 3
Plunger 36 for moving 5 to a pressing position and a standby position
And

Then, the leading end of the stencil sheet 16 conveyed from the stencil making section 2 is clamped by the clamp section 26. In this clamped state, the plate cylinder 25 is rotated and the stencil sheet 16 is wound around the outer peripheral surface of the plate cylinder 25 and mounted. The printing paper 34 conveyed in synchronization with the rotation of the plate cylinder 25 is pressed by a press roll 35.
The ink 32 is transferred from the perforated portion of the stencil sheet 16 onto the printing paper 34 by pressing the stencil sheet 16 of the plate cylinder 25 with the, and an image is printed.

The paper supply unit 4 is provided with a printing paper 34 as a printing medium.
And a primary paper feed roll 38 for moving only the uppermost printing paper 34 from the paper supply table 37.
And a pair of secondary paper feed rolls 39 for transporting the printing paper 34 moved by the primary paper supply roll 38 between the plate cylinder 25 and the press roller 35 in synchronization with the rotation of the plate cylinder 25. The rotation of a main motor (not shown) is selectively transmitted to the primary paper feed roller 38 and the secondary paper feed roller 39 via each paper feed clutch (not shown).

The paper discharging unit 5 is a printing paper 34 on which printing has been completed.
From the plate cylinder 25, a belt conveyor transport mechanism 43 that transports the printing paper 34 that has been peeled off by the paper peel nails 42, and printing that has been transported by the belt conveyor transport mechanism 43. Printed paper 34
And a paper discharge table 44 on which the sheets are placed in a stacked state.

The plate discharging section 6 is a plate discharging separation claw 4 for peeling off the stencil sheet 16 wound around and mounted on the plate cylinder 25 from the plate cylinder 25.
5, a pair of stencil rolls 46 for transporting the stencil paper 16 peeled off by the stencil separation pawls 45, and a stencil discharge box 47 for accommodating the stencil paper 16 transported by the pair of stencil rolls 46.

Next, a control system of the stencil printing apparatus will be described with reference to FIG.

In the stencil printing apparatus, as described above, the original reading unit 1, the stencil making unit 2, the printing unit 3, the paper feeding unit 4, the paper discharging unit 5, and the stencil discharging unit 6 are connected to the control unit 51 for controlling them. It is configured. The stencil printing apparatus includes an external interface (I / F) 71 for transmitting and receiving data by connecting to an external information terminal device 61. Further, the stencil printing apparatus includes an operation panel 81 operated by a user.

The operation panel 81 generates an operation input signal indicating the operation content according to the operation content of the user, and
Output to As shown in FIG. 3A, the operation panel 81 includes a prepress / print selection key 91, a start key 92, a stop key 93, a menu key 94, a ten key 95, a continuous mode key 96, a top / bottom / left / right movement amount input unit. Are provided, and a display panel 98 for displaying various data is provided.

The operation panel 81 is provided with a plate making / printing selection key 9
When an operation 1 is performed, an operation input signal for selecting a plate making operation or a printing operation is generated and output to the control unit 51. When the start key 92 is pressed, the operation panel 81 outputs a control signal for starting the plate making process or the printing process selected by the plate making / printing selection key 91 to the plate making unit 2 or the printing unit 3.

When the continuous mode is selected by operating the continuous mode key 63, the operation panel 81 sends to the control unit 51 an operation input signal indicating that the plate making operation and the printing operation are to be continuously repeated. Output. Thereby, the control unit 51 outputs a control signal that operates in the continuous mode to the plate making unit 2 and the printing unit 3.

Further, on the operation panel 81, the print position adjustment key 97 includes a center reference position return key 97a and a pair of top and bottom direction keys 97 for moving the print position in the vertical direction.
b, a pair of left / right keys 97c for moving the printing position in the left / right direction. Print position adjustment key 97
Generates an operation input signal indicating the amount of movement of the print position in the top-to-bottom direction and the left-right direction when operated by the user, and outputs it to the control unit 51.

In this example, the vertical and horizontal movement amounts are
When the print position adjustment key 97 is operated, the control unit 51 recognizes the amount of movement, and display data indicating the amount of movement is output from the control unit 51 to the display panel 98. By doing so, the display panel 98
As shown in FIG. 3B, the input moving direction and moving amount are displayed.

The control unit 51 includes, for example, a CPU, and controls each unit constituting the stencil printing apparatus in accordance with an operation input signal from the operation panel 81. The control unit 51 includes an image position movement processing unit 51a that controls movement of the position of the plate cylinder 25, and a plate cylinder position movement processing unit 51b that controls the image position when plate making is performed by the plate making unit 2. The image position movement processing unit 51a and the plate cylinder position movement processing unit 51b
Processing is performed by a program stored in an internal storage area.

The plate cylinder position movement processing section 51b prints the printing paper 3
4 is a means for relatively moving the image position with respect to the top and bottom and / or the left and right directions. When the image position is moved in the top and bottom directions, a control signal for controlling the feeding timing by the secondary feeding roll 39 is supplied to the feeding unit. 4 is output.

That is, as shown in FIG. 4, if the timing at which the leading end of the printing paper 34 is located at the reference rotation position of the stencil sheet 16 mounted on the plate cylinder 25 is the normal paper feeding timing, the predetermined timing By feeding paper at a timing advanced by the distance L1 or feeding paper at a timing delayed by a predetermined distance L2, the position of the plate cylinder 25 in the vertical direction with respect to the printing paper 34 is changed.

The plate cylinder position movement processing section 51b moves the plate cylinder 25 in the horizontal direction relative to the apparatus main body when moving the image position in the horizontal direction. That is,
As shown in FIG. 5A and the like, a nut portion 101 rotatably supported by a fixed portion of the plate cylinder 25, and the nut portion 101
And a ball screw 104 which is screwed into the nut part 101, is fed in the direction perpendicular to the sheet conveying direction by the rotation of the nut part 101, and is supported on the apparatus main body 103 side. Cage, nut part 10
When the ball screw 104 is pitch-fed by one rotation, the horizontal position of the plate cylinder 25 with respect to the apparatus main body 103 is changed. FIG. 5A shows the positional relationship between the position in the left-right direction of the printing paper 34 and the plate cylinder 25 at the reference position where the stencil sheet 16 having the normal image position S is mounted.
As shown in (B) and (C), by moving the plate cylinder 25 rightward or leftward, the plate cylinder 2 with respect to the printing paper 34 is moved.
5 can be adjusted left and right.

The image position movement processing section 51a is a stencil sheet 1
6 is a means that can move the image position S to be plate-made in the vertical and / or right and left directions. In this embodiment, the image position S to be written by outputting a control signal to the thermal head 18
To move. FIG. 6A shows a case where writing is performed on the thermal head 18 at a normal writing timing.
The image position S is located at the center of the stencil sheet 16. And
By shifting the write timing of the thermal head 18 to the right by a predetermined amount L11 for each line, FIG.
As shown in FIG. 6B, the image position S is moved rightward from the center, and the write timing of the thermal head 18 for each line is shifted to the left by a predetermined amount L12, as shown in FIG. Image position S left from center
To move.

When moving the image position in the vertical direction, the image position moving processing unit 51a shifts the write timing of the thermal head 18 for one screen (field) in line units, thereby shifting the image position from the center to the vertical direction. Move S.

Next, a specific method of adjusting the vertical and horizontal directions by the image position moving processing unit 51a will be described.

The image position movement processing section 51a changes the write start timing with respect to the read start timing when adjusting the vertical direction. For example, when performing plate making by moving the plate making position by 5 mm in the top direction, the image position movement processing unit 51a sets the plate making position 5
The start of the light pulse motor is delayed by an amount equivalent to mm conveyance. When performing the plate making by moving the plate making position by 5 mm in the ground direction, the image position movement processing section 51a advances the start of the write pulse motor by a distance equivalent to 5 mm conveyance from the reference writing start timing.

When making adjustments in the left-right direction, the image position movement processing unit 51a shifts the image data to the left or right direction when making stencils on the stencil sheet 16, and performs stencil making.
As shown in FIG. 7, for example, 5 m from the plate making position to the right.
If the user wants to make a plate by moving the image position, the image position movement processing unit 51
In a, the image data for one line is first stored once in the line memory 111 in the image conversion device, subjected to various image processings, and then transferred to the thermal head 18. When extracting image data from the line memory 111, the image position movement processing unit 51a transfers white (empty) data corresponding to 5 mm on the left side to the writing unit, and then extracts the image data from the left end and transfers the image data to the thermal head 18.

In this case, when there is image data at a position corresponding to the right end of the line memory 111, the thermal head 1
There is a possibility that image data that cannot be made by exceeding the number of pixels of 8 may be generated. However, since the plate cannot be made beyond the maximum width of the thermal head 18 (for example, A3 size in the case of A3 equipment), the printing paper 34 The image to be printed is an image with the right end missing.

If it is desired to move the image data by 5 mm to the left to make a stencil, the image position movement processing unit 51a sets the image data at a position 5 mm from the right end to the left end when taking out the image data from the line memory 111. Transfer to head 18.

Next, the processing of the control unit 51 will be described with reference to the flow charts of FIGS.

First, an overall schematic operation will be described. As shown in FIG. 8, when the power is turned on, the control unit 51 executes a predetermined initial process (step S1). When the print position adjustment key 64 is operated, the control unit 51 executes a print position movement amount setting process for setting the image position movement amount by the image position movement processing unit 51a or the plate cylinder position movement processing unit 51b. (Steps S2 and S3) When the plate making operation is selected by the plate making / printing selection key 58, the plate making unit 2 controls the plate making process (Steps S4 and S3).
5) When the printing operation is selected by the prepress / print selection key 58, the printing unit 3 controls the printing process (steps S6 and S7).

Next, the printing position moving amount setting process will be described. As shown in FIG. 9, when the operator operates the vertical direction key 64b to input the vertical movement amount (step S8), the control unit 51 determines the vertical movement amount. The controller 51 stores the amount of vertical movement in a memory (not shown), and displays the amount of movement on the operation panel 81 (steps S9 and S9).
10, S11). When the user operates the left / right direction key 64c to input a left / right movement amount (step S1).
2), the control unit 51 determines the left / right movement amount. Control unit 5
1 stores the amount of left and right movement in a memory (not shown) and displays the amount of movement on the operation panel 81 (step S13,
S14, S15). Thus, the print moving distance setting process ends (step S16).

Next, the plate making operation will be described. As shown in FIG. 10, when the plate making operation is selected, the control unit 51
First, the vertical / horizontal movement amount is called from a memory (not shown) (step 20). If the movement amount of the printing position has been input before the start of the plate making operation, the up-down movement amount and the left-right movement amount are stored in the memory. If there is a vertical movement amount, the control unit 51
Performs a top-side moving process or a ground-side moving process according to the moving direction. If there is a lateral movement amount, the control unit 51
Performs a read position changing process of the line memory 111 according to the moving direction. As shown in FIG. 11, the top direction movement process determines the writing start time from the top direction movement amount (step S32), and sets this writing start time in the timer (step S33), and is completed (step S34). . The ground direction movement process is performed as shown in FIG.
The write feed amount is determined based on the ground direction movement amount (step S35), the feed of the write pulse motor is started (step S36), and the drive is completed until the write feed amount is reached (steps S37 and S38).

Returning to FIG. 10, if the movement amount of the printing position has been input before the start of the prepress operation (when the printing position is adjusted), the control unit 51 performs the above-described processing. Thereafter, when the moving amount of the printing position is not input (when there is no printing position adjustment), the plate discharging operation is performed without performing the above-described processing (step 27). That is, when the stencil sheet 16 is wound around the plate cylinder 25, the stencil sheet 16 is removed from the plate cylinder 25 and discarded in the plate discharge box 47.

When the plate discharging process is completed, a plate making operation is performed based on the vertical / horizontal movement process together with the original reading operation (steps S28 and S29). Specifically, the document reading unit 1
After applying various image conversion processes to the image data read line by line, the thermal head 1 is applied to the stencil paper 16 based on the image data subjected to the image conversion processes.
At 8 a thermal perforation is made. Therefore, as the stencil sheet 16 made based on the upside-down / left-right movement procedure, a stencil sheet 16 whose image position is moved in the up-down direction or the left-right direction is created. Then, a stencil printing process is performed in which the stencil sheet 16 thus formed is wound around the plate cylinder 25 (step S30), and the stencil making operation is completed (step S31). In the printing operation described below, if the vertical movement amount is set, the image position of the stencil sheet 16 is moved in the vertical direction or the horizontal direction. A directionally displaced print is obtained.

Next, the printing operation will be described. As shown in FIG. 13, the control unit 51
4 is determined (step S40), and if there is no printing paper 34, an out-of-paper error process is performed (step S4).
1). Further, the control unit 51 determines whether the stencil sheet 16 has been set on the plate cylinder 25 (step S42), and if the stencil sheet 16 has not been set, performs a no-plate error process (step S43). . Further, the control unit 51 determines whether or not there is ink 32 in the ink pool between the squeegee roll 30 and the doctor roll 31 (step 44).
If there is no ink 32, an ink-out error process is performed (step 45). The control unit 51 determines whether or not the top / bottom / left / right movement amount has been input after the start of plate making and before the start of printing, together with these checks (step S4).
6) When the top / bottom / left / right movement amount is input (when the print position is adjusted), the plate cylinder position movement control means 50 performs the setting change processing of the sheet feeding timing and the left / right movement of the plate cylinder 25. Perform (Step S47).

The control section 51 controls the rotation of the plate cylinder 26, feeds the printing paper 37 from the paper feeding section 4 in synchronization with the rotation, and feeds the fed printing paper 34 to the press roll 3.
In step S48, control is performed to transfer the ink image to the printing paper 34 by pressing the stencil sheet 16 of the plate cylinder 25 and discharge the printed printing paper 34 to the paper output unit 5 (step S48). .

In this printing operation, if the vertical movement amount is set, the feed timing of the printing paper 34 is changed, so that a printed material in which the image position of the printing paper 34 is shifted in the vertical direction is obtained. . When the left-right movement amount is set, the left-right position of the plate cylinder 25 is shifted, so that a printed matter in which the image position of the printing paper 34 is shifted in the left-right direction is obtained. That is, when the print position is adjusted before and after the start of the plate making operation, a printed matter based on the total adjustment amount of the print position adjustment before the start of the plate making operation and the print position adjustment after the start of the plate making operation is obtained.

Further, even when the vertical / horizontal movement amount is input during the printing operation, the plate cylinder position movement control means 50 immediately performs the setting change processing of the sheet feeding timing and the right / left movement of the plate cylinder 25. Therefore, as described above, the printing paper 34
Is obtained, the image position of which is shifted in the vertical direction and / or the horizontal direction. Such printing processing ends when the set number of remaining prints becomes zero (step S).
49).

As described above, in general, when performing vertical / horizontal movement adjustment before starting the plate-making operation, it is a case where the amount to be moved is known in advance such as to secure a binding margin. In this case, the image position movement processing unit When the image position of the stencil sheet 16 is changed by 51a, and the top and bottom and right and left movements are adjusted after the start of the stencil making operation but before the start of the printing and during the printing operation, the actual printing state is checked with respect to the printing paper 34. Fine adjustment is performed. In this case, the relative position of the plate cylinder 25 with respect to the printing paper 34 is changed by the plate cylinder position movement processing unit 51b.
Therefore, various shifts due to mechanical excessive shift such as instability of the feed / discharge performance due to excessive shift of the feed timing and contamination of the press roll 35 due to excessive lateral movement of the plate cylinder 25 or the like. Of printing paper 3
4 can be adjusted.

When the continuous mode in which the stencil making operation and the printing operation are continuously repeated is selected, every time the stencil making operation is performed on the stencil sheet 16 based on the new image data, the image position moving processing section 51a performs the stencil sheet printing operation. To change the position of the image to be made. In this manner, in the continuous mode, when performing stencil making with new image data, the position of the image to be stencil-formed on the stencil sheet 16 is changed, so that the printing paper 3
It is not necessary to perform the operation of changing the image position of No. 4 and returning the plate cylinder 25 to the reference position every time plate making is performed. Therefore, the total printing time can be reduced when the image position of the printing paper 34 is adjusted in the continuous mode.

In the above-described embodiment, the image data used for plate making of the plate making unit 2 is not limited to the one read by the document reading unit 1 but the one sent from the information terminal device 61 connected to the outside. Since the image data transferred from the information terminal device 61 can be
4 can be adjusted.

Further, according to the above-described embodiment, the left and right moving means of the plate cylinder position moving processing unit 51b is constituted by the means for moving the plate cylinder 25 left and right, but the sheet feeding table 37 (including the sheet discharging table 44). ), The plate cylinder 25 and the paper feed table 37
(Including the paper discharge tray 44).

The vertical movement means of the plate cylinder position movement processing unit 51b is constituted by means for varying the timing of feeding the printing paper 34 to the plate cylinder 25, but shifts the rotational phase position of the plate cylinder 25. You may comprise by means.

The stencil sheet 1 by the thermal head (writing head) 18 before and after the start of the stencil making operation.
It is conceivable to adjust the printing position in the up / down / horizontal direction by changing the image position of No. 6; however, with this means, if the printing position in the up / down / left / right direction is adjusted after the start of the stencil making operation, the stencil making is performed again Need and not practical.

[0069]

According to the first aspect of the present invention, plate cylinder position movement control means for relatively moving the position of the plate cylinder with respect to the print medium in the vertical and / or horizontal directions, and the position of the image formed on the stencil sheet Image position movement control means capable of moving the image position in the top and bottom and / or left and right directions, and top and bottom and left and right movement amount input means capable of inputting the movement amount of the image position with respect to the print medium in the top and bottom and / or left and right directions. If the top and bottom and / or left and right movement amounts are input from the top and bottom and left and right movement amount input means before the start of the operation, the image position movement control means executes the operation of changing the image position to be made on the stencil sheet, After the start of the operation and before the start of the printing operation and during the printing operation, when the top and bottom and / or the left and right movement amount is input from the top and bottom and left and right movement amount input means, the relative position of the plate cylinder is controlled by the plate cylinder position movement control means. Variable position In general, when performing vertical and horizontal movement adjustment before starting the plate-making operation, it is a case where the amount to be moved such as to secure a binding margin is known in advance, and in this case, the image position movement control is performed. If the image position of the stencil sheet is changed by the means, and the top and bottom and right and left movement adjustment is performed after the start of the stencil making operation but before the start of the printing or during the printing operation, fine adjustment to the printing medium by checking the actual printing state In this case, the position of the plate cylinder relative to the print medium is changed by the plate cylinder position movement control means.
Therefore, various inconveniences caused by mechanical over-shifting, such as instability of the paper feeding / discharging performance due to excessive shift of the paper feed timing and contamination of the press roll due to excessive lateral movement of the plate cylinder and the like. Is prevented, and the image position of the print medium can be adjusted.

According to the second aspect of the present invention, when the continuous mode in which the stencil making operation and the printing operation are continuously repeated is selected, the image position movement control is performed every time the stencil making is performed based on the new image data. Means for changing the position of the image to be made on the stencil sheet by the means, so in the continuous mode, the image position of the printing medium is changed by changing the image position to be made on the stencil sheet when performing stencil making with new image data. Since it is not necessary to perform the operation of returning the printing drum to the reference position every time the printing is performed, the total printing time can be reduced even when the image position of the printing medium is adjusted in the continuous mode.

According to the third aspect of the present invention, the image position moving means is configured to change the image position by changing the write timing by the write head.
The image position movement control means adjusts the image position of the stencil sheet by changing the writing position on the stencil sheet by the writing head.

According to the fourth aspect of the present invention, the plate-cylinder position movement control means performs top-to-bottom movement by changing the timing at which the print medium is fed to the plate cylinder. The vertical position of the plate cylinder with respect to the print medium is adjusted by changing the timing of feeding the print medium to the plate cylinder.

According to the fifth aspect of the invention, since the image data used for plate making in the plate making section is read by the document reading section, the image position of the printing medium is adjusted with respect to the image data read by the document reading section. it can.

According to the sixth aspect of the present invention, since the image data used for plate making in the plate making section is transmitted from an externally connected information terminal device, the image data transferred from the information terminal device is transmitted. Can adjust the image position of the print medium.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is an overall schematic configuration diagram of a stencil printing apparatus.

FIGS. 2A and 2B show an embodiment of the present invention, wherein FIG. 2A is a front view of an operation panel, and FIG. 2B is a view showing display contents of a display panel. It is.

FIG. 3 is a circuit block diagram illustrating a control system of the stencil printing apparatus according to the embodiment of the present invention.

FIG. 4 illustrates one embodiment of the present invention and is a diagram illustrating a change in a sheet feeding timing of printing paper by a plate cylinder position movement control unit.

5A and 5B show an embodiment of the present invention, in which FIG. 5A shows a positional relationship between printing paper and a plate cylinder at a reference position, and FIG. 5B shows the plate cylinder moved rightward by plate cylinder position movement control means. (C) is a diagram showing a state in which the plate cylinder has been moved to the left by the plate cylinder position movement control means.

6A and 6B show an embodiment of the present invention, in which FIG. 6A shows an image position of a stencil sheet made at a reference position by a thermal head, and FIG. FIG. 7C is a diagram showing the image position of the stencil sheet obtained by using the thermal head, and FIG.

FIG. 7 shows one embodiment of the present invention, and is a diagram showing the read timing from the line memory when the image position of the stencil sheet is shifted rightward or leftward.

FIG. 8 is an overall schematic flowchart showing one embodiment of the present invention.

FIG. 9 is a flowchart illustrating a print moving distance setting process according to an embodiment of the present invention.

FIG. 10 is a flowchart of a plate making operation according to the embodiment of the present invention.

FIG. 11 is a flowchart illustrating a top direction moving process according to an embodiment of the present invention.

FIG. 12 is a flowchart of a ground direction moving process according to the embodiment of the present invention.

FIG. 13 is a flowchart illustrating a print processing operation according to an embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 original reading section 2 plate making section 3 printing section 4 paper feeding section 5 paper discharging section 6 plate discharging section 16 stencil sheet 18 thermal head (writing head) 25 plate cylinder 34 printing paper (print medium) 35 press roll 51 control section 61 information terminal Device 71 External interface 81 Operation panel 97 Printing position adjustment key

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B41F 33/06 B41F 33/06 S 33/14 33/14 K

Claims (6)

[Claims] 1. A stencil making section on a stencil sheet based on image data, a stencil wrapping the stencil sheet made by the stencil section around an outer peripheral surface thereof, and printing in synchronization with rotation of the stencil sheet. A printing unit that feeds a medium, presses against the outer peripheral surface of the plate cylinder, and prints an image on the print medium at a predetermined image position, and moves the image position with respect to the print medium in the vertical and / or left / right directions A top / bottom / left / right movement amount input unit for inputting movement amount information indicating an amount; and a position of the plate cylinder relative to the print medium based on movement amount information from the top / bottom / left / right movement amount input unit. And / or plate cylinder position moving means for moving in the left-right direction, and, based on the moving amount information from the top / bottom / left / right moving amount input means, the image position to be made on the stencil sheet,
Or an image position moving means for controlling the stencil unit so as to move in the left-right direction; and a stencil operation for making a stencil based on image data on the stencil sheet at the stencil unit and applying the stencil sheet to the plate cylinder. If the movement amount information is input from the top / bottom / left / right movement amount input means before the start of the operation, the image position movement means is controlled to move the image position to be made on the stencil sheet, and the stencil making operation is performed. And control means for controlling the plate cylinder position moving means to move the relative position of the plate cylinder when the movement amount information is input before the start of the printing operation and during the printing operation. A stencil printing apparatus, comprising: 2. The control unit according to claim 1, wherein a continuous mode in which a plate making operation by said plate making unit and said plate cylinder and a printing operation by said printing unit are continuously repeated is selected based on new image data. 2. The stencil printing apparatus according to claim 1, wherein each time a stencil is made on the stencil sheet, the image position is moved by the image position moving means. 3. The stencil printing apparatus according to claim 1, wherein said image position moving means moves the image position by adjusting the timing of plate making by said plate making section. 4. The apparatus according to claim 1, wherein the plate cylinder position moving means moves the image position upside down by adjusting a timing at which the printing unit feeds the printing medium to the plate cylinder. Stencil printing equipment. 5. The stencil printing apparatus according to claim 1, wherein the image data used for plate making in the plate making section is data read by a document reading section. 6. The stencil printing apparatus according to claim 1, wherein the image data used for the stencil making of the stencil making unit is transmitted from an externally connected information terminal device.