JPH08164596A - Mineograph base paper printing plate making apparatus - Google Patents

Abstract

PURPOSE: To make correctly a printing plate at a designated position on a mimeograph base paper sheet irrespective of the position of a manuscript image on a manuscript. CONSTITUTION: In an effective printing plate making area in which a printing plate of a manuscript image is made on a mimeograph base paper sheet 1, an initial end use mark 4a and a terminal end use mark are made at upper and lower limit positions, respectively. In a printing plate making apparatus 10, a mark sensor for detecting these marks is installed on the mimeograph base paper sheet 1. In a controlling part, until the initial end used mark being detected and after time terminal end use mark being detected, the mimeograph base paper sheet 1 is moved at a high speed. Besides, when the manuscript image is outside the effective printing plate making area, the part is cut off or shifted so that the whole manuscript image is placed within the area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil sheet making apparatus for making a stencil sheet used in a stencil printing machine.

[0002]

2. Description of the Related Art At present, there is an apparatus for timely recording both thermal paper and stencil paper by using one line type thermal head. Conventionally, when recording both thermal paper and stencil paper, both the thermal paper width and the stencil paper width are almost the same as those of the line type thermal head, and it is possible to switch between thermal paper and stencil paper recording by the switch of the device. It has become.

[0003]

However, when there is a stencil sheet narrower than the line type thermal head at the time of plate making for the stencil sheet using the line type thermal head, the data position of the original to be copied and the stencil sheet. It became very difficult to align the plate-making data position above and perform plate-making. Further, if the close contact between the line type thermal head and the stencil sheet is poor, the perforation will be defective. If the pressing pressure is not uniform, poor perforation will occur and wrinkles will occur on the stencil sheet. The melted material of the thermoplastic resin adheres to the thermal head, resulting in poor conveyance of the stencil sheet. The melt remains in the perforated portion, hindering the ink from passing therethrough, resulting in defective printing. There was a problem such as.

SUMMARY OF THE INVENTION In order to solve the above problems, it is an object of the present invention to provide a stencil sheet plate making apparatus capable of correctly making a plate at a predetermined position on the stencil sheet regardless of the state of the original.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and is equipped with a print head,
A stencil sheet plate making apparatus capable of combined use of printing on a printing paper or a stencil sheet as an object to be printed, wherein in the stencil sheet, a detection indicating an upper limit and a lower limit position of an effective plate making area at the time of plate making is detected. Mark is provided, the plate making apparatus, a mark sensor for detecting the detection mark,
A control unit for determining the plate making position of the stencil sheet based on the detection signal of the mark sensor is provided.

Further, according to a second aspect of the present invention, the control unit is based on the plate making position of the stencil sheet detected by the mark sensor, even if the printable area of the print head is outside the area of the stencil sheet. When a certain plate-making data is sent, the data outside the area of the stencil sheet may be cut to perform plate-making control.

Further, according to a third aspect of the present invention, the control section is based on the plate making position of the stencil sheet detected by the mark sensor, even if the printable area of the print head is outside the area of the stencil sheet. When a certain plate-making data is sent, it is possible to shift the data outside the area of the stencil sheet to the area of the stencil sheet and control the plate making.

According to a fourth aspect of the present invention, the control section can determine whether the printing paper or the stencil sheet is used, depending on whether or not the detection mark is detected.
If it is determined that the recording target is stencil paper,
The data sent to the print head may be controlled to be mirror image data.

Further, as described in claim 5, the stencil sheet is preliminarily provided with a start end mark indicating a plate making start position and an end mark indicating a plate making end position, and the control unit sets the start end mark. The feeding speed of the stencil sheet in the area up to detection and in the area after the end mark is detected may be controlled to move faster than the speed during plate making.

According to a sixth aspect of the present invention, in the printing object, an effective plate making area portion at the time of plate making is a stencil sheet,
A portion outside the effective plate making area is configured as a printing sheet, and the control unit performs plate making on the stencil sheet within the effective plate making area, and outside the effective plate making area, the content of the plate making of the stencil sheet. It may be configured to control the printing of various types of information indicating the.

According to a seventh aspect of the present invention, the print head provided in the plate making device may be a line type thermal head, and the print paper may be a thermal paper.

In this case, the control unit controls the platen pressure applied to the thermal head to a pressure suitable for the stencil sheet at the time of plate making of the stencil sheet. be able to.

When it is determined that the recording target is a stencil sheet, the control unit changes the heat energy of the thermal head to a value corresponding to the stencil sheet making process. It may be configured to.

Further, as described in claim 10, the print head provided in the plate making apparatus may be an ink jet head.

In this case, as described in claim 11, when it is determined that the recording target is the stencil sheet, the control section sets the ink discharge amount of the ink jet head to a value corresponding to the stencil sheet making. It can be configured to control change.

[0016]

The stencil sheet is previously provided with a detection mark indicating the range in which the stencil can be made, and the stencil making machine can easily detect whether the sheet is a printing paper or a stencil sheet by detecting the detection mark. Can be determined. The detection mark is composed of a start end mark and an end end mark, and the mark sensor detects this and the control unit judges that the space between them is an effective plate making area. The original image projected from the effective plate-making area is cut or shifted to form a plate on the stencil sheet. Further, when the structure is moved at a high speed outside the effective plate making area, the time required for plate making of the stencil sheet can be shortened. Further, if the effective plate-making area is composed of a stencil sheet, and the original image is made into a plate, and the outside of the stencil sheet is used as a printing paper, and a printing area showing the contents of the original image is provided, the original image is printed together with the original image. It is possible to describe the contents and contents at the time of printing after plate making.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a diagram showing a stencil sheet (master) with a frame. FIG. 1B is an enlarged view of a portion surrounded by a one-dot chain line in FIG. A stencil sheet with frame 1 shown in FIG.
Is fixed with a frame 3 provided around the stencil sheet 2. Detection marks 4 (4a, 4b) are provided at upper and lower ends of the frame 3 around the stencil sheet 2.
As shown in FIG. 2B, the detection mark 4 is provided outside the effective plate-making area where the stencil sheet 2 can be plate-made, and the plate-making upper end of the stencil sheet 2 is the start-end detection mark 4a. And the lower end capable of plate making is set as the end detection mark 4b. Also, the detection mark 4
Is set as the start position in the width direction of the effective plate making area of the stencil sheet 2 at one end in the width direction of the document.

Next, FIG. 2 is a view showing a roll-shaped stencil sheet in which the stencil sheet without the frame 3 is formed in a roll shape. On the roll-shaped stencil sheet 5, the detection marks 6 (6a, 6a) are formed on the upper and lower sides corresponding to the effective plate making area.
b) is provided in advance. A plurality of start edge detection marks 6a and end edge detection marks 6b are provided in pairs in the length direction of the roll-shaped stencil sheet 5. The effective plate making areas (widths) of the framed stencil sheet 1 and the roll-shaped stencil sheet 5 are set in advance corresponding to the width of the original. Therefore, the detection marks 4 and 6 are provided in advance above and below these effective plate making regions, that is, corresponding to the vertical positions in the moving direction of the stencil sheet during plate making. The width of the roll-shaped stencil sheet 5 may be wider than that of the original 20. In this case, the roll-shaped stencil sheet 5 is cut into a width corresponding to the effective plate-making area after plate making.

The stencil sheet with frame 1 and the roll-shaped stencil sheet 5 are mounted on the plate making apparatus 10 shown in FIG. 3 and the original 20 is set to perform plate making while reading the data of the original 20. This stencil making device 10 comprises stencil sheets 1, 5
A plate making unit 11 for making the plate and a reading unit 13 for reading the original 20 are provided. The plate making unit 11 is a stencil sheet 1, 5
It comprises a printing head (line thermal head) provided in the width direction and a platen for moving the stencil sheets 1 and 5. The stencil sheets 1 and 5 are made by main scanning of the line thermal head and sub-scanning by the platen. Reading unit 13
Is composed of a line scanner provided in the width direction of the document 20 and a platen for moving the document 20. The document 20 is read by main scanning of the line scanner and sub-scanning by the platen.

The plate making section 11 is provided with a mark sensor 12 for reading the detection marks 4, 6 of the stencil sheets 1, 5. A detection signal when the mark sensor 12 detects the detection marks 4 and 6 is sent to a control unit (not shown). When the detection marks 4 and 6 are detected, the control unit performs plate making on the stencil sheet, and when the detection marks 4 and 6 are not detected, it is determined to be normal printing using thermal paper.

FIG. 4 is a block diagram showing an electric circuit configuration of the plate making apparatus 10. The line scanner 13a of the reading unit 13 has a row of n dots. The dot line of one line output from the line scanner 13a is synchronized with the clock and input to the shift register 15 having n dot lines. The output data from the shift register 15 is output by the selector 16 in either a normal image state or a reverse image state.

This selection is based on the normal image /
The reverse image select signal is input to the selector 16 and switched. That is, the original image is in a normal image state when the plate making device 10 prints on the thermal paper, and is in a reverse image state when the plate is made on the stencil sheets 1 and 5. At this time, at the same time, the control unit responds to the switching between the thermal paper and the stencil paper,
The contact pressure of the platen provided in the plate making unit 11 with respect to the thermal head is switched correspondingly. Specifically, when the stencil sheets 1 and 5 are made, the pressure applied to the thermal head of the platen is increased to increase the thermal head 11
The heat energy of b is increased to a value suitable for stencil plate making. The output data of the selector 16 is input to m (n> m) shift registers 11a provided in the plate making unit 11, and a heating unit of the thermal head 11b generates heat by giving a strobe signal from the control unit to generate thermal paper. Or perform stencil stencil plate making.

As will be described later, the control unit shifts the data output from the shift register 15 when more data than the heating element number m of the thermal head 11b per line is received. In this shift control, the data at the head is overflowed or the data at the back is cut off. The control unit selects whether the m-cut valid signal is output to the m-counter 17. . When shifting the entire image data, the input head data is invalidated by the specified count number and then shifted. At this time, an invalid count number is set in the shift counter 18. In this way, the control unit controls the reading unit 13
The data read by is shiftably output to the plate making unit 11, and the plate making control as described below is performed in response to the detection signal of the mark sensor 12.

That is, with respect to the plate making portion 11, first, the position of the mark 4a for detecting the leading edge of the stencil sheet 1 is set to the mark sensor 1.
The plate is not controlled until it is detected in step 2. And
After the detection mark 4a is confirmed by the mark sensor 12,
The thermal head 11b is heated according to the original image (read data) of the original 20 input from the reading unit 13 to perform plate making. Next, when the mark sensor 12 detects the end detection mark 4b, the driving of the thermal head 11b is stopped and the plate making is completed. The platen is controlled so as to continuously move the stencil sheet 1 regardless of the presence or absence of plate making.

At this time, the control unit controls the start edge detection mark 4a.
Control between changing the moving speed of the stencil sheet 1 may be performed between the end detection mark 4b and the end detection mark 4b and other portions (before and after plate making). For example, as shown in the operation flowchart of FIG. 5, the stencil sheet 1 is moved in the high speed mode until the start edge detection mark 4a is detected. As a result, the processing time required for plate making can be shortened. Further, the stencil sheet can be moved in the high speed mode after the end detection mark 4b is detected.

In addition, the control section uses the stencil sheet 1 as the plate making section 11
It is also possible to perform a control in which the stencil sheet 1 is moved (taken into the inside) immediately after being mounted on and the waiting control is performed until the read data arrives at the start edge detection mark 4a. Even in the case of the roll-shaped stencil sheet 5, the above control operation is
Detection mark 6 provided on this roll-shaped stencil sheet 5.
The same is done by (6a, 6b).

Next, the case where the original image of the original 20 is larger than the effective plate making area F of the stencil sheet 1 will be described. That is, as shown in FIG. 6A, when the valid document image is larger than the dot number m of the thermal head 11b among the data read by the line scanner 13a of the reading unit 13 with n dots, control is performed. The section cuts data outside the effective plate making area F of the stencil sheet 1. As a result, the stencil sheet 1 of the plate making section 11 shows a stencil-making result as shown in FIG. 6 (b), and the thermal head 11b does not generate heat at a place other than the stencil sheet, and it is possible to prevent damage to the thermal head 11b. .

Next, the original image on the original 20 is the stencil sheet 1.
The case where it deviates from the effective plate making area F will be described. When the position of the stencil sheet 1 and the original image of the original 20 are deviated as shown in FIG. 7A, the control unit converts the original image of the original 20 into the effective stencil sheet of the original 20 as shown in FIG. 7B. It is possible to shift to the area F and perform plate making within the effective plate making area of the stencil sheet 1.

At this time, the control section detects the protrusion amount of the original image outside the effective plate-making area F and outputs the m-cut effective signal to the m counter 17 by that amount. Further, a count value corresponding to the protrusion amount is output to the shift counter 18. As a result, the shift counter 18 invalidates the input head data by the designated count number,
Shift the data. As a result, the thermal head 1
Data of m dots is input to the shift register 11a therein, and the thermal head 11b can plate the original image corresponding to the effective plate making area F. Normally, the size ratio of the original image on the original 20 is set to 1: 1 so that the original image is stored in the effective plate making area F of the stencil sheet 1. Therefore, if the shift control is performed, the original image is changed. Stencil base paper 1
Can be accommodated within the effective plate-making area F.

Next, FIG. 8 shows a sheet in which a printing area P is provided outside the effective plate making area F. This paper is
The effective plate-making area F is composed of the stencil sheet 2, and the printing area P is composed of the thermal paper 25. In addition, the whole is composed of thermal paper 25, and the stencil sheet 2 is placed in the effective plate-making area F.
May be attached. This thermal paper 25
Then, it is possible to write various information 26 relating to the plate-made original image on the thermal paper 25 by the same thermal head 11b as that used in the plate-making. The various information 26 includes content information 26a indicating the content of the document image and color information 26b indicating the print color. In the figure, the content information 26a is "Momiji", which is an original image, written in characters, and the color information 26b is information for printing in the "Cyan" color. Incidentally, the one shown in the figure shows one of the color prints using the three colors of cyan, magenta and yellow.

The various information 26 may be written on the manuscript 20 in advance and read by the reading unit 13, or may be input by an operation unit (not shown). By writing this various information 26, it is possible to confirm what the plate making data is. In this case, plate making can be performed directly on the stencil sheet, and when printing is performed using the stencil sheets 1 and 5, it is possible to prevent mistakes in the colors used. After the plate making, the thermal paper 25 portion is cut.

The plate making apparatus 10 described in the above embodiment can use a word processor, a printer, a facsimile, a stencil printing machine, etc., the original information on the original 20 is read by the reading section, and the stencil sheet 1, 5 can be applied to other devices as long as the plate is made on the plate 5.

In FIG. 9, an ink jet nozzle is used in place of the thermal head used as the print head of the plate making section. In this way, the plate making unit of the plate making apparatus may be configured by an inkjet printer. In this case, as the stencil base paper, the stencil base paper described above or the stencil base paper with ink 1 filed in Japanese Patent Application No. 6-207044
02 is used. The inked stencil sheet 102 is composed of a dissolution layer 104a and a support 104b.
Reference character a has a configuration in which the ink is dissolved by the dissolving liquid 107 discharged from the nozzle 106 of the inkjet printer 101 to form perforations corresponding to the original image. Incidentally, in the case of only the stencil sheet, it corresponds to the dissolution layer 104a. A pad 105 containing ink is provided between the stencil sheet 104 and the film 103, and the ink is printed on the printing paper via the perforated portion of the dissolving layer 104a.

The control unit of the above ink jet printer is
When performing plate making on the stencil base paper or the ink-containing stencil base paper, control is performed to change the ejection amount of the inkjet to a value suitable for making the stencil base paper or the ink-containing stencil base paper.

[0035]

According to the present invention, when the stencil sheet is made by the recording apparatus using the printing head as described above, the stencil sheet is previously provided with a detection mark indicating an effective plate making area.
Since the mark sensor on the device side is configured to detect this and determine the effective stencil making area by the control unit, the stencil of the original image can be made on the stencil stencil without worrying about the positional relationship between the original and the stencil stencil. It is possible to position and easily carry out plate making. Further, since the original image outside the effective plate making area can be cut or shifted to make a plate on the stencil sheet, the original image on the original sheet is positioned at an appropriate position on the stencil sheet without pre-positioning. It becomes possible to make a plate in the state. Further, if the detection mark is composed of the start mark and the end mark, it can be judged that the space between these is the effective plate making area, and outside the effective plate making area, the stencil sheet can be moved faster and the time required for plate making is shortened. It can also be timed.

The print head may be either a line type or a serial type, and either a thermal head or an ink jet head may be used. In either case, when printing on printing paper, At the time of plate making on the stencil sheet, the control value for the head is changed so that the plate making can be performed well. At this time, the thermal head changes the value of heat generation energy, and the inkjet head changes the discharge of the dissolving liquid to a compatible value. Also,
When using a thermal head, to improve the plate making condition,
Increase the contact pressure of the platen.

Further, a stencil sheet is provided in the effective plate making area, and a paper sheet provided with a printing paper outside the effective plate making area is used. Original information is made in the effective plate making area, and the contents at the time of plate making are shown on the outer part. If the information is printed, characters or the like indicating the contents of the plate making can be written at the same time as the plate making, and the contents effective at the time of printing after the plate making can be written.

[Brief description of drawings]

FIG. 1A is a diagram showing a stencil sheet with a frame. (B)
Is an enlarged view of a portion surrounded by a one-dot chain line in FIG.

FIG. 2 is a diagram showing a roll-shaped stencil sheet.

FIG. 3 is a diagram showing a plate making device.

FIG. 4 is a block diagram showing an electrical circuit configuration of a plate making device.

FIG. 5 is a flowchart showing the operation of the plate making device.

FIG. 6A is a diagram showing a document image. FIG. 3B is a diagram showing a state in which a part of the original image is cut to make a plate.

FIG. 7A is a diagram showing a document image. FIG. 6B is a diagram showing a state in which an original image is shifted to make a plate.

FIG. 8 is a diagram showing a printing (plate making) state using another printing paper.

FIG. 9 is a diagram showing an example in which a plate making unit is configured by an inkjet printer.

[Explanation of symbols]

1 ... Stencil stencil with frame, 5 ... Roll stencil stencil, 4, 6 ...
Marks for detection, 4a, 6a ... Marks for start end, 4b, 6b
... Termination mark, 10 ... Plate making device, 11 ... Plate making part, 12
... mark sensor, 11b ... thermal head, 13a ... line scanner, 20 ... original, 25 ... printing paper with stencil base paper, 102 ... stencil base paper with ink, 105 ... pad, 1
06 ... Nozzle, 107 ... Dissolution liquid.

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location B41L 13/04 F

Claims (11)

[Claims] 1. A stencil sheet plate making apparatus which is equipped with a print head and is capable of being used together with printing sheet as a printing object or stencil sheet sheet, wherein the stencil sheet sheet has an upper limit of an effective plate making area at the time of plate making. And a detection mark indicating a lower limit position, and the plate making apparatus includes a mark sensor that detects the detection mark and a control unit that determines the plate making position of the stencil sheet based on the detection signal of the mark sensor. A stencil plate making device characterized by being provided. 2. The control unit, based on the plate making position of the stencil sheet detected by the mark sensor, sends plate making data that is outside the area of the stencil sheet even in the printable area of the print head. The stencil sheet plate making apparatus according to claim 1, wherein the stencil sheet making device is controlled by cutting data outside the area of the stencil sheet. 3. The control section sends plate-making data that is outside the area of the stencil sheet even in the printable area of the print head based on the plate-making position of the stencil sheet detected by the mark sensor. The control for shifting the data outside the area of the stencil sheet to the area of the stencil sheet and performing plate making is carried out.
The stencil plate making apparatus described. 4. The control unit can determine whether the printing paper or the stencil sheet is used based on the presence or absence of detection of the detection mark, and when it is determined that the recording target is the stencil sheet. 2. The stencil sheet plate making apparatus according to claim 1, wherein the data sent to the print head is controlled to be mirror image data. 5. The stencil sheet is preliminarily provided with a start end mark indicating a plate making start position and a terminating end mark indicating a plate making end position, and the control unit has an area until a start end mark is detected,
2. The stencil sheet plate making apparatus according to claim 1, wherein the feeding speed of the stencil sheet in the area after the end mark is detected is controlled to move at a higher speed than the speed at the time of plate making. 6. The object to be printed is configured such that an effective plate-making area portion at the time of plate-making is a stencil sheet and a portion outside the effective plate-making area is configured as a printing paper, and the control unit is an effective plate-making area. 2. The stencil sheet plate making apparatus according to claim 1, wherein the stencil sheet is made inside the plate, and outside the effective plate making area, various information indicating the contents of the stencil sheet is printed. 7. The stencil plate making plate according to claim 1, wherein the printing head provided in the plate making device is a line-type thermal head, and the printing paper is made of thermal paper. apparatus. 8. The stencil sheet plate making apparatus according to claim 7, wherein the control unit controls the platen pressure applied to the thermal head to a pressure suitable for the stencil sheet during plate making of the stencil sheet. 9. The stencil sheet according to claim 7, wherein, when it is determined that the recording target is a stencil sheet, the control unit changes the heat energy of the thermal head to a value corresponding to the stencil sheet making process. Plate making equipment. 10. The stencil sheet plate making apparatus according to claim 1, wherein the print head provided in the plate making apparatus is an ink jet head. 11. The control unit, when it is determined that the recording target is a stencil sheet, controls the ink ejection amount of the ink jet head to a value corresponding to the stencil sheet making process. Stencil making machine.