JP3066407B2 - Stencil printing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hole capable of writing a plurality of original images in a well-balanced manner in an image writing area.
The present invention relates to a plate making and printing apparatus .

[0002]

2. Description of the Related Art Heretofore, for example, a copying machine and a stencil type stencil printing apparatus have been known as image forming apparatuses for writing and processing a document image signal read by a CCD or the like in a document reading section.

In the above-described copying apparatus, an original image signal is sent to an original image writing section including a laser or a light emitting diode to write an image on a photoreceptor to form an electrostatic latent image. The toner added to the image is transferred to a copy sheet to create a copy.

In a stencil type stencil printing machine, etc.,
Making a stencil on the stencil at the stencil writing section consisting of a thermal head and a platen roller based on the original image signal, winding the stencil on the printing drum,
Thereafter, printing is performed by transferring the ink that has been extruded from the printing drum and passed through the original image formed on the stencil sheet to the printing paper.

In the above-described image forming apparatus, for example, a so-called continuous shooting function of writing two images of a B5 size document side by side on a copy having a B4 size document writing area may be used. is there.

When these continuous shooting functions are used, for example, in the case of a stencil type stencil printing machine, the following control is performed.

First, after a continuous shooting key is set, the first shot to be continuously shot is set.
At the same time when the original is read by the plate making reading unit, the original image is written on the stencil paper by the plate making writing unit composed of the thermal head and the platen roller, and the plate making reading unit detects the end of reading of the first document. Is
The rotation of the platen roller is stopped, and the writing by the thermal head is temporarily stopped.

Next, when the reading of the second document is started, writing is started by the thermal head in the same manner as described above to make a plurality of pages of stencil printing of a plurality of documents, and then the stencil sheet is wound around a drum to perform printing.

[0009]

By the way, in the conventional image forming apparatus as described above, the continuous shooting function is used, and for example, a B5 image is formed on a copy having an image writing area of A3 size.
When two size originals are copied side by side, the copied B5
The image of the original of the size is left-aligned with respect to the copy of the A3 size.

In other words, the image of the B5 size document, which is the second document, is copied across the center line of the A3 size copy.
There is a drawback that inconveniences occur when a three-size copy is cut from the center line and used, or when used in bag binding.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object the purpose of using the continuous shooting function regardless of the size of the original and the copy to be used. An object of the present invention is to provide a stencil printing machine capable of writing images of a plurality of originals in a well-balanced manner on both sides of a center line of a set copy object as a boundary.

[0012]

According to a first aspect of the present invention, an image of a document read by a plate-making reading unit is formed on a stencil sheet by a plate-making writing unit comprising a thermal head and a platen roller. In a stencil type stencil printing apparatus that performs stencil making and stencil printing on the drum, the stencil stencil printing device performs continuous printing stencil setting means for setting stencil making of a plurality of originals in a stencil area conveying direction of the stencil sheet, and printing. Printing paper size input means for inputting paper size ;
A writing amount data storage unit for storing writing amount data indicating an area where a perforated image is to be formed in the stencil sheet transport direction in the stencil sheet in the plurality of equally divided regions for each printing paper size; When multi-sided plate making is set, a plurality of originals read by the plate making reading unit with reference to the writing amount data based on the printing paper size input by the printing paper size input means. Control means for controlling the stencil writing section so as to perform stencil making on the stencil sheet so that the original image of the stencil sheet is equally allocated to each of the plurality of equally divided areas of the printing paper, and the writing amount data The perforated image forming area shown is characterized by comprising an area that is a predetermined amount before a line for equally dividing the printing paper and an area that exceeds the line by a predetermined amount. According to a second aspect of the present invention, an original image read by a stencil reading unit is formed on a stencil sheet by a stencil writing unit including a thermal head and a platen roller, and the stencil sheet thus formed is wrapped around a drum for printing. In a stencil type stencil printing machine to be performed, a continuous printing stencil setting means for setting stencil making of a plurality of originals in a stencil area conveying direction of the stencil sheet, and a printing paper size input for inputting a size of printing paper
Means, and write amount data storing means for storing write amount data indicating an area in which a perforated image is to be formed in the direction of conveyance of the stencil sheet in the stencil sheet in a plurality of equally divided areas for each printing paper size; When multi-side plate making is set by the setting means, the input is made by the printing paper size input means.
The plate making of the original image of the first document read by the plate making reading unit is terminated at a position before the predetermined number of lines of the plurality of equally divided area lines by referring to the writing amount data based on the obtained printing paper size. And the conveyance of the stencil sheet to a position exceeding a predetermined amount of the plurality of equally divided area lines,
Control means for controlling the plate making writer so as to perform plate making of the second document image in response to the start of reading of a second document by the plate making reading unit, the control unit comprising: The formation region of the perforated image to be formed includes a region that is a predetermined amount before a line that equally divides the printing paper and a region that exceeds the line by a predetermined amount. In the invention according to claim 3, the writing amount data includes plate making amount data indicating a region where a perforated image is to be formed in the direction of the plate making region of the stencil sheet in a plurality of equally divided regions of each printing paper size, and the plate making amount data. It is characterized by comprising platen feed amount data.

[0013]

According to the present invention, the data is indicated by the write amount data.
The area where the perforated image to be formed is
Area before the specified amount, and after exceeding the line by the specified amount
Area and marked by the continuous printing plate making setting means.
When multiple surface plate making for printing paper is set, together based on the size of the printing paper control means detected, the mark
Based on the writing amount data to be divided into a plurality of planes, which is called from the writing amount data storage means in the original image writing area corresponding to the size of the printing paper , control is performed so that multiple writing of the original image is equally allocated. regardless of the size of the document to be used in plane writing, a plurality of images to be copied, without straddling a plurality equipartition regions lines of printing paper to be used, yet each of the plurality equipartition regions line as a central The images are equally allocated and copied so that the images are always accommodated in the plurality of equally divided areas without being connected. Therefore, bag binding using equal division lines
When stitching, the image may be hidden by the stitched part.
It is convenient for stapling.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a stencil type stencil printing machine according to the present invention.
Is a side sectional view showing an embodiment, the apparatus as shown in the figure, plate making reading unit as an original reading portion 1, the document image stencil making writing unit 2 is a writing unit, a cutter unit 3 is the copying unit It comprises a printing unit 4.

The plate making reading section 1 includes a document set table 12 on which a document 7 to be copied is set, and a document sensor 1 for detecting the document 7 set on the document set table 12.
7, a document feed roller pair 14 that is driven to rotate by a detection signal of a document sensor 17, a contact image sensor 11 that optically reads an image of the fed document 7 and converts it into an electric signal, and an image sensor 11. And a document discharge roller pair 15 for discharging the document 7 read by the scanner 7 to a document discharge tray 19.

The original IN sensor 16 detects the conveyed original 7 to determine the start of the plate making writing unit 2 described later.

The pair of original transport rollers 14 and the pair of original discharge rollers 15 are driven to rotate by a stepping motor 18 as shown by dotted lines in FIG.

The stencil making unit 2 includes a thermal head 21 having a plurality of heating elements 21 a, a platen roller 24 that conveys the stencil sheet 23 sent from the stencil sheet roll 22 against the thermal head 21, and a thermal head 21. The stencil sheet 23 is made up of a pair of stencil conveying rollers 26 that convey the stencil sheet 23 that has been stenciled toward a clamp portion 32 of a drum 33 described later.

Note that the write motor 25 shown by a dotted line
Denotes a stepping motor, which rotationally drives the platen roller 24 and the stencil conveying roller pair 26.

The cutter unit 3 includes a cutter 31 for cutting the stencil sheet 23 when the stencil sheet 23 produced by the thermal head 21 has a predetermined length wound around the drum 33.

The printing section 4 is loaded on a drum 33 having an ink supply section for supplying a fixed amount of ink to an inner surface thereof from an ink reservoir 58 formed between a doctor roller 56 and a squeegee roller 57, and a paper feed table 44. A pickup roller 46 that picks up and conveys the printing paper 43 one by one from the printing papers 43 to be copied, a timing roller 42 that sends out the printing paper 43 conveyed from the pickup roller 46 at a predetermined timing, and a timing roller The press roller 35 presses the printing paper 43 sent from the drum 42 against the outer peripheral surface of the drum 33, the separation claw 55 for peeling the printed printing paper 43 from the drum 33, and the printing paper 43 peeled and discharged from the drum 33. It comprises a discharge tray 49 for discharging and stacking the printing paper 43.

A clamp 32 is provided on the outer peripheral surface of the drum 33 to clamp the leading end of the stencil sheet 23 made and conveyed by the thermal head 21. Is wound around its outer peripheral surface by rotating.

The main motor 34 indicated by a dotted line in FIG.
Is a DC motor for rotating the drum 33. Reference numeral 41 denotes a transport path.

FIG. 2 shows an operation panel 5 in the stencil type stencil printing apparatus configured as described above. On this operation panel 5, a start key 50 for starting stencil making or printing and a continuous shooting mode are set. A multi-surface writing setting means for copying and setting a continuous image key 51, that is, a document image signal optically read by the plate making reading unit 1 so as to write a plurality of surfaces on the printing paper 43 in the plate making writing unit 2; Numerical keys 52 for inputting the number of sheets and size data of the printing paper 43 to be used, the number of prints input from the ten keys 52 and a display on an LCD or the like for displaying that the continuous shooting mode is set by pressing the continuous shooting key 51 Device 5
4 are arranged.

FIG. 3 is a control block diagram of the stencil type stencil printing apparatus constructed as described above. In FIG. 3, reference numeral 60 denotes a control means having a CPU for controlling the operation of the entire apparatus.

Reference numeral 61 denotes a storage unit constituted by a RAM, which stores the number of print sheets data, continuous shooting mode setting data, and the like input from the operation panel.

Reference numeral 62 denotes a write amount data composed of a ROM.
Data storage means.
As writing amount data, first edition amount of and feed amount data of the platen roller 24 of the stencil sheet 23, when the continuous shooting mode is executed, the equally divided areas in accordance with the size of the printing paper 43 to be used The table stores stencil making amount data indicating an area where a stencil image is to be formed , platen roller feed amount data related thereto, and also stores a program shown in the flowchart of FIG.

Reference numeral 52 denotes the printing paper 43 as described above.
Numeral keypad as a copy size input means for inputting the size data of the plate, 63 is a plate making reader driving circuit for driving the plate making reader 1, 64 is a plate making writer driving circuit for driving the plate making writer 2, 65 Reference numeral denotes a printing unit driving circuit that drives the printing unit 4.

Next, the operation of the stencil type stencil printing apparatus having the above-described configuration will be described with reference to the flow charts shown in FIGS.

In this case, as shown in FIG. 6 (b), the stencil making area 23a of the stencil sheet 23 has a size of X ′ × Y ′.
X × Y B as shown in FIG.
A case will be described in which one sheet of a 5-size document 7 is used and plate making and printing in which the images of the document 7 are arranged side by side on two sides as shown in FIG. 6C.

First, when the original 7 is set on the original table 12 and the leading end of the original 7 abuts against the original transport roller pair 14, the original sensor 1
7 detects this original 7 and displays on the display device 54 that the plate-making operation is possible, and enters a start state.

When the continuous shooting key 51 is depressed, several types of numbered printing paper sizes are displayed on the display device 53 (step 100).

Next, the size signal of the set printing paper is determined by detecting which size of the numeric keypad 52 is pressed.

That is, whether the numeric keypad indicating the A3 size printing paper 43 has been pressed (step 101), whether the numeric keypad indicating the B4 size printing paper 43 has been pressed (step 102), or the numeric keypad indicating the A4 size printing paper 43 Is pressed (step 103) or a numeric key indicating the A4R size printing paper 43 is pressed (step 10).
4) is determined.

In this embodiment, A3 size printing paper 43
Is set on the sheet feeding table 43, the numeric keypad 52 for specifying the A3 size is pressed.

When the input by the ten keys 52 is completed, the display device 54 indicates that the continuous shooting operation is possible.
The setting completion operation is displayed above (step 10).
5).

Next, as shown in FIG.
N is determined (step 106). If YES, the process proceeds to the next step, and it is determined whether the document sensor is ON (step 10).
7) Again, in the case of YES, the original transport roller pair 14
Is rotated by the drive of the writing motor 18 to start document feeding (step 108).

Subsequently, it is determined whether or not the document IN sensor is ON (step 109). If YES, it is determined whether or not the document has been sent for L (see FIG. 1) (step 110). The stencil sheet 23 is conveyed by the driving of the platen roller 24, and stencil sheet feeding is started (step 111).

At the same time, the image of the original 7 is optically read by the contact image sensor 11, converted into an electric signal and sent to the control means 60, and the image information sent from the control means 60 to the stencil sheet 23. A corresponding molten perforation image is formed, and a so-called plate making process is performed (step 112).

Note that the leading end of the stencil sheet 23 before the above-described stencil making is started is held in a state of being cut by the cutter 31 of the cutter unit 3 during the previous stencil making operation. , Waiting at this cutting position.

As described above, the plate making process is performed according to the image information of the original 7, but the complete plate making process is performed in the above-described step 1.
12, the size of the print paper 43 set on the paper feed tray 44, that is, the print paper size signal sent from the copy object size input means 66, is not terminated at the time when the plate making reading and writing of the original 7 is completed. It is determined whether or not the plate making amount data stored in the plate making amount data storage means 62 has been sent (step 113). If YES, the plate making process is completed completely thereafter (step 114).

Next, it is determined whether or not the platen roller feed amount data has been sent (step 115). If YES, the stencil sheet feeding is stopped (step 116), and thereafter, it is determined whether or not the original has been discharged (step 116). Step 11
7) In the case of YES, the original feeding is stopped (step 118), whereby the primary plate making operation is completed.

In this embodiment, the set printing paper 43
Whatever the size is, the data is stored in the writing amount data storage means 62 as a plate making amount before a predetermined amount, for example, about 2 mm before the center line for equally dividing it, and write amount feed rate of the roller 24 a predetermined amount beyond the central line, for example up to about 7 millimeters as feed amount data of the platen roller 24
It is stored in the data storage means 62.

Accordingly, the plate making process is started from the point A shown in FIG. 6C (the plate making start position is always constant), but the subsequent plate making operation is based on the size data of the printing paper 43 inputted by the ten keys 52. According to the plate making amount data storage means 62
The plate making roller driving circuit 64 is controlled by the control unit 60 based on the plate making amount data and the platen roller feed amount data stored in the memory.

That is, regardless of whether the reading of the original 7 is completed or not, the plate making operation is performed up to the point B just before the center line shown in FIG. The transport roller 14 and the document discharge roller 15 are driven.

On the other hand, the rotation of the platen roller 24 exceeds the point B, and is continued until the next plate making start point C beyond the center line is reached.

Thereafter, the secondary plate making operation is performed. First, a display to the effect that the original 7 is set is displayed on the display device 54 of the operation panel 5 and it is determined whether or not the original sensor is ON (step 119). In the case of (1), the document feed is started so that the document 7 abuts the document feed roller pair 14 within a predetermined time, for example, 17 seconds (step 121), and then it is determined whether the document IN sensor is ON (step 12).
2) In the case of YES, it is determined whether the original has been fed by L (step 123), and in the case of YES also, stencil sheet feeding is started in the same manner as in step 111 of the primary plate making operation described above (step 123). 124).

Subsequent steps 125 to 129
Are performed in the same manner as in steps 112 to 116 described above.

Thereafter, the stencil sheet 23 is fed by the stencil sheet feeding roller 2.
6 (Step 130), one end of which is fixed by the clamp 32 (Step 131), and the stencil sheet 23 is wound around the outer peripheral surface of the drum 33 by rotating the drum 33 (Step 130). 1
32), after being wound by a predetermined amount, cut by the cutter 31 (step 133).

As a result, the stencil sheet 33 is completely wound around the outer peripheral surface of the drum 33, the secondary stencil making operation is completed, and the printing operation is in a standby state.

On the other hand, if it is determined in step 119 that the document sensor is not ON, that is, if NO, it is determined whether 17 seconds have elapsed, and if it is determined that 17 seconds have elapsed, that is, if YES, Step 1 immediately
Go to 30. Thereafter, as described above, step 13
The processing from 0 to 133 is performed, and the operation proceeds to the printing operation.

Next, the printing operation will be described.

When the number of prints is input using the ten keys 52, the data is displayed on the display device 54.

In this state, when the start key 50 is pressed, the printing paper 43 is conveyed one by one to the timing roller 42 by the pickup roll 46, and after a temporary standby, the timing roller 42 is rotated at a predetermined timing with the rotation of the drum 33. It is driven and sent to the transport path 41.

The printing paper 43 sent to the transport path 41
The ink is transferred by pressing the outer peripheral surface of the drum 33 by the press roller 35 and passed through the perforated image formed on the stencil sheet 23 to perform printing.

The printing paper 43 on which the printing has been performed is
5, the sheet is removed from the outer peripheral surface of the drum 33,
It is discharged to 9.

As described above, A3 size printing paper 4
The plurality of printed images of the B5 size original 7 printed on
As shown in FIG. 6D, the printing paper 43 of A3 size does not straddle the equally-divided center line.
As shown in (1), printing is carried out in a well-balanced manner in a state of being equally allocated in each of the two divided areas.

Further, since the continuous shooting control section according to the present embodiment is determined in the plate making area according to the sheet size, even if the size of the original is twice as large as the printing sheet size, the plate making area exceeds the printing sheet size. And the press roller is not stained by printing.

Although the present embodiment has been described with respect to continuous shooting on two screens, the present invention is not limited to this, and writing of images on two or more screens can be similarly performed. In this case, data indicating three- or four-faced characters may be input from the operation panel, and the plate making amount data and the platen roller feed amount data may be accessed accordingly.

As a means for inputting the size data of the printing paper 43, a ten key provided on the operation panel is used, but an independent key is provided on the operation panel.
The size data of the printing paper 43 may be input by operating the key.

[0062]

[0063]

As described above, according to the present invention,
When the multi-plane writing setting means is set to perform multi-sided document writing, the control means sets a plurality of equal divisions corresponding to the size of the copy based on the size of the copy detected by the document copy size input means. Since the writing data to form an image in the area is called from the writing amount data storage means and the writing of the original image signal is controlled in the original writing section based on these data, a plurality of transferred Regardless of the size of the document used for continuous shooting, the image can always be contained in a plurality of equally divided areas of the copy to be used in a state where the images are equally allocated.

Therefore, it is possible to perform multi-side writing corresponding to a plurality of originals in a well-balanced manner, so that even when the object to be used is cut into a plurality of equal parts and used, a plurality of sheets of the same size are obtained. While being able to
It is also possible to perform double-folding on the copy object to perform bag binding.

Further, in the continuous shooting control according to the present invention, the writing area is determined according to the paper size. Therefore, even when the size of the document is twice as large as the size of the copy, the size of the copy exceeds the size of the copy. It also has the effect of not being transferred.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of a stencil printing machine according to the present invention.

FIG. 2 is a front view showing an operation panel of the stencil printing machine shown in FIG. 1;

FIG. 3 is a control block diagram of the stencil printing machine shown in FIG. 1;

FIG. 4 is a flowchart showing the first-stage operation of the stencil printing machine shown in FIG. 1;

FIG. 5 is a flowchart showing the second stage operation of the stencil printing machine shown in FIG. 1;

FIG. 6 is an explanatory diagram of a continuous shooting function of the stencil printing machine shown in FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 plate making reading section 2 plate making writing section 7 manuscript 23 stencil sheet 60 control means 61 storage means 62 plate making data storage means

────────────────────────────────────────────────── ─── Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B41C 1/00-1/18 B41L 13/04 H04N 1/38-1/393

Claims (3)

(57) [Claims] An original image read by a plate-making reading section is
Plate making book consisting of thermal head and platen roller
Make a stencil on the stencil paper at
A stencil type stencil printing machine that wraps and prints on a drum
Perform stencil making of a plurality of originals in the direction of conveyance of the stencil sheet.
And the size of the printing paper.Printing paper size input means to input
The stencil master in a plurality of equally divided areas for each printing paper size.
Indicates the area where the perforated image is to be formed in the papermaking area transport direction.
Write amount data storage means for storing write amount data
And that the multi-sided plate making is set by the continuous plate making setting means
ComeEntered by the print paper size input meansFor printing
Referring to the writing amount data based on the paper size,
The original images of a plurality of originals read by the plate
Equally allocated to each within multiple equally divided areas of print paper
The stencil sheet is made into a stencil
Control means for controlling a plate writing unit, wherein a formation area of a perforated image indicated by the writing amount data is provided.
The area is an area that is a predetermined amount before the line that divides the printing paper equally
And the area after the line has exceeded the predetermined amount
A stencil type stencil printing machine characterized by the following. 2. An original image read by a plate making reading unit
Plate making book consisting of thermal head and platen roller
Make a stencil on the stencil paper at
A stencil type stencil printing machine that wraps and prints on a drum
Perform stencil making of a plurality of originals in the direction of conveyance of the stencil sheet.
And the size of the printing paper.Printing paper size input means to input
The stencil master in a plurality of equally divided areas for each printing paper size.
Indicates the area where the perforated image is to be formed in the papermaking area transport direction.
Write amount data storage means for storing write amount data
And that the multi-sided plate making is set by the continuous plate making setting means
ComeEntered by the print paper size input meansFor printing
Referring to the writing amount data based on the paper size,
Production of the original image of the first original read by the plate reading unit
The plate is terminated at a position before a predetermined amount of the plurality of equally divided area lines.
And divide the transfer of the stencil sheet into a plurality of
Move to a position beyond the predetermined amount of the area line, and
According to the start of reading of the draft by the plate making reading unit,
The stencil making unit is used to make a stencil for the second original image
Control means for controlling the size of the perforated image indicated by the writing amount data.
The area is an area that is a predetermined amount before the line that divides the printing paper equally
And the area after the line has exceeded the predetermined amount
A stencil type stencil printing machine characterized by the following. 3. The writing amount data is stored in a plurality of equally divided areas of each printing paper size in the direction of the stencil area of the stencil sheet.
3. The stencil printing machine according to claim 1, wherein the stencil printing machine comprises plate making amount data indicating an area where a perforated image is to be formed and platen feed amount data at the time of plate making.