JP2652011B2 - Stencil printing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a stencil printing plate directly produced by a thermal transfer printer such as a word processor.

[Prior art] A method of printing using a mount coated with a conventional thermoplastic resin film as an original for stencil printing is described in detail in, for example, Japanese Utility Model Publication No. 51-132007 and Japanese Patent Publication No. 51-15779. Has been stated. According to these methods and the conventional copy printing method, printed matter can be produced at a relatively low speed with a simple operation at low running cost. It can be said that this method is suitable for creating several hundred simple printed matter. However, when creating the original plate, it was directly engraved on the backing coated with a resin film with an iron brush or the like, or a handwritten or printed original was cut and pasted as an original, and this original was coated with a thermoplastic resin film by optical means The original is created by printing on the mount. Either method makes it difficult to create an original using typeface. In addition, there is no effective means for saving the original, making a partial change later, and reusing the original.

Word processors (hereinafter abbreviated as WP) and typewriters have become widespread as machines that can quickly create text-based documents by simple methods. Needless to say, WP can easily save, recall, and process documents, and can improve document creation efficiency sufficiently. If the document data created by WP is printed by the attached printer, it is possible to create many documents having the same contents. However, printing with a WP printer is much more expensive than stencil printing as described above, and the printing speed is very slow. Basically, it is a suitable method for creating one copy of a document. It is not suitable for producing a large amount of printed matter. It is possible to create and print a manuscript with WP etc., create a master using this printed thing as a manuscript, and print it in large quantity with a stencil printing machine, but this method does not directly create the master. Since the indirect work of creating a paper document is involved, it takes time and also degrades the quality of printing.

Japanese Patent Application Laid-Open No. 54-33043 discloses a method in which a printed image is directly engraved on a mount on which a thermoplastic resin film is applied by energizing an array of heating elements by an electric signal. If a computer typesetting machine or WP is connected to such a device, the editing work of the manuscript is very easy, the document can be easily stored, modified / changed, and managed, and a large amount of printed matter can be created at low cost. However, the advantage is small unless the apparatus is generally large-scale and a very large amount of printed matter is produced.

[Problems to be Solved by the Invention] According to the same principle as in JP-A-54-33043, it is possible to imprint a print image directly on a mount having a thermoplastic resin film by a WP equipped with a thermal transfer printer. However, engraving a print image directly with a general WP thermal transfer printer designed for printing on plain paper has the following problems.

One of the reasons is that the mount in which a thermoplastic resin film is applied to a porous sheet is extremely thin. During printing by a printer, the print head rubs the backing paper, causing the backing paper to wrinkle. Also, assuming that it is used in general WP, it is desirable that the mount or the original plate can be easily attached to the WP printer or stencil printing machine manually without any special jig or device,
If the mount is very fragile and you don't take much care in handling, it can wrinkle and tear. The backing paper may be reinforced with a backing paper or the like, and after printing with a printer, the backing paper may be peeled off, and the outer edge portion may be reinforced, for example, so that it can be mounted on a stencil printer. However, handling for this reinforcement involves great difficulty. That is, the thermoplastic resin sheet may be wrinkled, or the resin sheet may be damaged in an attempt to remove the entire backing paper. Further, since the printer is premised on printing on plain paper, the paper feed roller 301 (FIG. 3) is also adjusted according to plain paper, and it is very difficult to smoothly feed extremely thin backing paper.

Secondly, general WP printers are designed for printing on plain paper, so if the size of the mount is small, the paper feed mechanism will not work properly and the mount will meander. In addition, there is a non-printable area at the periphery of the paper, especially at the lower part. This is because the paper feed roller 301 of the printer is located below the platen 302 as shown in FIG. 3, and the lower end of the paper cannot be fed to the position of the print head 303. In the figure, the range a from the lower end of the paper is the non-printable area.

The present invention solves the above-mentioned problems, and provides an improved mount having a thermoplastic resin film that can be directly engraved on a WP equipped with a general thermal transfer printer, and a stencil using the engraved mount. An object of the present invention is to provide a stencil printing plate creating apparatus for creating a stencil printing plate and a stencil printing plate.

[MEANS FOR SOLVING THE PROBLEMS] An apparatus for producing a stencil printing plate according to the present invention comprises a porous sheet and a predetermined printing hole formed on the surface of the porous sheet in accordance with a printing operation of a heating head of a thermal transfer printer. A base paper comprising a thermoplastic resin film to be melt-punched and a backing paper for reinforcement weakly bonded to the back surface of the porous sheet, and a heating head to melt-punch a predetermined printing hole in the thermoplastic resin film. A thermal transfer printer having a paper feed roller for feeding the base paper to the heating head, a frame having a frame shape formed in an ink reservoir having a central portion opened to be adhered to the backing paper at the time of stencil printing, and A transparent film adhered to a frame and covering the ink filled in the ink reservoir, a stencil printing plate producing apparatus, comprising: a stencil printing machine at a boundary between a central portion and a peripheral portion of the backing paper. In A first frame-shaped perforation that facilitates peeling of the center portion is formed, and the frame having the frame shape is configured to be adhered to a peripheral portion of the first frame-shaped perforation. And, a second frame-shaped perforation is formed on the base paper for facilitating cutting of the protruding portion of the base paper protruding from the frame.
In performing a printing operation on the base paper by the thermal transfer printer, the first frame formed on the backing paper in order to feed the paper so that printing can be performed on the entire area within the first frame-shaped perforation. The length b from one pair of adjacent sides to the edge of the base paper is defined as the length a from the heating head to the paper feed roller in the thermal transfer printer.
It is characterized by being longer.

[Operation] According to the stencil printing plate prepared by the plate forming apparatus of the present invention, the backing paper for reinforcement is weakly bonded to an extremely thin backing obtained by applying a thermoplastic resin film to a porous sheet. Since the base paper is used, the base paper does not wrinkle even when rubbed by the print head at the time of printing by the printer, and does not wrinkle or break even when handling the base paper in a normal manner. By adding backing paper, the thickness of the base paper will be close to the thickness of plain paper,
The paper feed of the base paper at the time of printing is very smooth, and as a result, the print quality is improved. Since the first frame-shaped perforation is provided, it is not necessary to peel off the entire backing paper when bonding the ink reservoir for printing after printing, and the base paper may be wrinkled or damaged even in the normal handling. I don't have to.
Since the length b from a pair of adjacent two sides of one set of the first frame-shaped perforations to the edge of the base paper is longer than the length a from the heating head to the paper feed roller in the thermal transfer printer, Can be printed over the entire printing area, and the second frame-shaped perforation makes it very easy to cut the base paper protruding from the frame after bonding the ink reservoir frame.

Embodiment FIG. 1 is a diagram showing an editing unit and a printer unit of a WP for creating a stencil master according to the present invention. The operator inputs a character string to be printed from the keyboard 101 while looking at the display unit 102 to create document data. CPU103 is RO
The keyboard 101 is scanned according to the program stored in the M104 to detect that a key is pressed, and the character string of the corresponding key is developed and displayed on the display unit 102 according to the character font data stored in the ROM 104. The CPU 103 also performs operations such as kana-to-kanji conversion, correction, and editing in accordance with the operation input from the keyboard 101, and the determined character string is stored in the RAM 105 as a document file. Reference numeral 106 stores a document file created on a floppy disk drive (hereinafter abbreviated as FDD). When the operator instructs the storage of the document file by the keyboard 101, the CPU 103 activates the FDD 106 and sends the document data temporarily stored in the RAM 105 to the FDD 106 to store. In addition, the CPU 103 operates the FDD 106 according to a command from the keyboard 101 by the operator.
And call the saved document file RA
Transfer to M105. This allows the saved document file to be reused with new changes.

The document data completed by such a procedure is printed on a thermoplastic resin film by the thermal transfer printer 107,
The resin film is melt-punched according to the printed image. The thermal transfer printer 107 includes a paper feed roller 108, a heating head 109, a head feed mechanism 110, and the like, and is controlled by the CPU 103. When receiving a print command from the keyboard 101, the CPU 103 activates the thermal transfer printer 107, calls one line of character string data from the document file, and develops a print image in the print buffer 111. When the paper feed roller 108 of the thermal transfer printer 107 operates and the base paper 112 coated with the thermoplastic resin film comes to a predetermined position, the head feed mechanism 110 is activated to move the heating head 109. When the heating head 109 reaches a predetermined position, the CPU 103 sequentially energizes the heating head 109 in accordance with the print image of the print buffer 111, and prints the print image of the print buffer 111 on a thermoplastic resin film. The thermoplastic resin shrinks when heated, and a hole is formed in the heated portion to form a stencil printing plate. When the head feed mechanism 110 sends the heating head 109 and completes printing of one line, the CPU 103 sets the head feed mechanism.
110 is activated to return the heat generating head 109 to the first position of the line, clear the print buffer 111, develop the next line of the document file into the print buffer 111, and start printing the next line.

By the way, the heating head 109 is usually applied from the side of the thermoplastic resin film for printing, but the copy ink is loaded from the side of the porous sheet. Therefore, the image to be printed by the printer 107 needs to be mirror-inverted and printed unlike normal transfer printing on paper with a thermal transfer ribbon. It is very easy to print in this way, and the order in which the print image is developed in the print buffer 111 is reversed, or the print buffer 11
The order in which power is supplied to the read-out heating head 109 from 1 may be reversed. Plain paper is used in place of the original with a thermoplastic resin film on the thermal transfer printer 107, and a thermal transfer ribbon is loaded between the heating head 109 and the plain paper for printing. Can be used as A normal WP and a WP having both functions as a stencil printing machine can be realized by simply switching the development or reading / reading order of the print buffer 111 by software.

FIG. 2A is a cross-sectional view of a stencil sheet used as a stencil printing plate. A thermoplastic resin film 202 is applied to a porous sheet 201 to form a base paper, and the back surface is reinforced with a backing paper 203 to form a base paper. In the present application, the porous sheet 201 coated with the thermoplastic resin film 202 is referred to as a backing sheet, and the sheet obtained by reinforcing the backing sheet with a backing sheet 203 is referred to as a base paper. Since the porous sheet 201 and the thermoplastic resin film 202 are extremely thin, the paper feed roller 108 cannot feed the mount smoothly. Therefore, the base paper was reinforced with a backing paper 203 so that the paper could be fed smoothly with the thickness close to that of plain paper. Note that the porous sheet 201 and the thermoplastic resin film 202 are adhered and cannot be easily separated. On the other hand, the backing paper 203 and the porous sheet 201 are adhered with a weak glue, and can be easily peeled off after engraving by the thermal transfer printer 107. Porous sheet
For 201, use Japanese paper, silk, mesh fine mesh, or the like. Further, as the thermoplastic resin film 202, polyvinylidene chloride or the like is used.

FIG. 2B is a perspective view of the base paper, and a rectangular area surrounded by the perforation line 204 is an effective area to be engraved by the printer. The backing paper 203 has a perforation line 204 inserted therein, and is peeled off from the backing paper along the perforation line 204 after the engraving by the printer is completed. The reason for leaving the outer edge of the backing paper 203 is that if the whole is peeled off, the backing will be fragile,
This is because it is difficult to perform later work (described later) due to wrinkles or the like. In order to make it possible to engrave the entire effective area, in other words, to prevent the above-described non-printable area of the printer from entering the inside of the effective area, the sewing line 204 is used.
The length b from the edge to the edge of the base paper is larger than the value of a in FIG. As described above, the length b from the perforation line 204 to the edge of the base paper should be larger than the value a, as shown in FIG.
It is good to keep in the direction of two adjacent sides of the set. This is WP
This is because it is necessary to insert the base paper vertically or horizontally when attaching the base paper to the printer in accordance with the setting of whether the paper is to be placed vertically or horizontally in the format described above.

FIG. 2 (c) is an assembly diagram of a stencil printing plate.
The base paper shown in FIG. 2 (b) is engraved, the backing paper 203 is removed along the center sewing line, and only the outer edge is left.
Adhered to. At this time, if the perforation line 204 is inserted in a size larger than the inner edge of the frame 206 and smaller than the outer edge, the frame 206 is bonded so as to simultaneously fix the porous sheet 201 and the backing paper 203. After the frame 206 is bonded, a part of the base paper protruding from the outer edge of the frame is cut off. For this reason, it is preferable to insert a second sewing line 208 for convenient cutting off.
In this case, it is necessary to put the sheet in both the porous sheet 201 and the backing paper 203. The frame 206 is provided with a transparent sheet 207, and the printing ink is filled between the transparent sheet and the porous sheet 201 by lifting the transparent sheet 207.

The stencil assembled in this way is mounted on a stencil printing machine,
Printing can be performed by placing paper on the lower part of FIG. 2 (c) and applying pressure from the upper part. The reason why the outer edge of the backing paper 203 is left and adhered to the frame 206 is that it is very difficult to adhere to the frame 206 so that the backing paper is weak and does not wrinkle.

[Effects of the Invention] As described above in detail, according to the stencil printing plate created by the stencil printing plate creating apparatus of the present invention, a porous resin sheet is coated with a thermoplastic resin film. Since the base paper is made by weakly bonding the backing paper for reinforcement to the thin base paper, the base paper does not wrinkle even if it is rubbed by the print head during printing by the printer, and it can be handled normally when handling the base paper. It doesn't break or break. By adding the backing paper, the thickness of the base paper becomes close to the thickness of plain paper, so that the paper feed of the base paper at the time of printing becomes very smooth, and as a result, the print quality is improved. Since the first frame-shaped perforation is provided, it is not necessary to peel off the entire backing paper when bonding the ink reservoir for printing after printing, and the base paper may be wrinkled or damaged even in the normal handling. I don't have to. Since the length b from a pair of adjacent two sides of one set of the first frame-shaped perforations to the edge of the base paper is longer than the length a from the heating head to the paper feed roller in the thermal transfer printer, Can be printed over the entire printing area, and the second frame-shaped perforation makes it very easy to cut the base paper protruding from the frame after bonding the ink reservoir frame. As mentioned above, the conventional
Since stencil printing plates with good printing quality can be created very easily without changing the mechanisms and functions of the WP or stencil printing machine, running costs and printing time are greatly reduced, and A large number of good printed matter can be created by a simple method.

[Brief description of the drawings]

FIG. 1 shows a stencil printing plate according to the present invention.
FIG. 3 is a diagram illustrating an editing unit and a printer unit of the WP. 2 (a) is a sectional view of the base paper, FIG. 2 (b) is a perspective view of the base paper, and FIG. 2 (c) is an assembly view of a stencil printing master. FIG. 3 is a diagram showing a non-printable area a of the printer. 101 Keyboard 102 Display 103 CPU 105 ROM 105 RAM 106 FDD 107 Thermal transfer printer 108 Paper feed roller 109 Heating head 110 Head feed mechanism 111 Print buffer 201: Porous sheet 202: Thermoplastic resin film 203: Backing paper 204: Perforation line 206: Frame 207: Transparent sheet 208: Second perforation line

Claims (1)

(57) [Claims] 1. A porous sheet, a thermoplastic resin film formed on the surface of the porous sheet and having a predetermined printing hole melt-punched with a printing operation of a heating head of a thermal transfer printer; A base paper comprising a backing paper for reinforcement weakly adhered to the back surface, a heating head for melting and perforating a predetermined printing hole in the thermoplastic resin film, and a paper feed roller for feeding the base paper to the heating head were provided. A thermal transfer printer, a frame having a frame shape formed in an ink reservoir having a central portion opened to be adhered to the backing paper at the time of stencil printing, and a transparent film which is adhered to the frame and covers the ink filled in the ink reservoir. A stencil printing machine comprising: a film; and a first frame-shaped sewing machine that facilitates peeling of the center portion before stencil printing at a boundary portion between a center portion and a peripheral portion of the backing paper. Eyes Being formed, the frame-shaped frame is configured to be adhered to the peripheral portion of the first frame-shaped perforation,
Further, the base paper is formed with a second frame-shaped perforation that facilitates cutting of the protruding portion of the base paper protruding from the frame.Furthermore, when the thermal transfer printer performs a printing operation on the base paper, In order to feed the paper so that printing can be performed on the entire area within one frame-shaped perforation, a pair of adjacent two of the first frame-shaped perforations formed on the backing paper
An apparatus for producing a stencil printing plate, wherein a length b from a side to an edge of the stencil sheet is longer than a length a from the heating head to a paper feed roller in the thermal transfer printer.