JP2005097761A - Photographic printing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photographic printing method, by which the pattern of a photographic color positive film can be printed on a fabric such as a polyester fiber fabric with sublimable dyes by a photomechanical technique. <P>SOLUTION: This photographic printing method is characterized by photomechanically forming at least three printing plates 6 having separated at least three primary colors, respectively, from a color positive film 1, printing transfer paper sheets 16 with sublimable dyes by the use of the printing plates 6 to make the transfer-printed paper sheets 16, and then thermally transferring the dyes of the transfer paper sheets 16 to a fabric 18 with a heater 19. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a photographic dyeing method for dyeing a photographic pattern onto a fabric, and more particularly to a photographic dyeing method for dyeing a photograph of a color positive film on a fabric using a photolithography technique.

In general, textile printing and screen printing are known as methods for dyeing colored designs on fabrics. Normally, in the case of textile printing, a corrugated surface with a pattern engraved on the surface of a metal roller is formed by corrosion, such rollers are prepared for each color, dye is applied to the corrugated surface of the roller, and excess dye is applied to the spatula plate. Scraping, the roller is pressed against the cloth, and the dye remaining in the concave surface is transferred and printed on the cloth to dye the design. In addition, as shown in Patent Document 2, in the case of screen printing, a screen plate through which dye passes is prepared for each color according to the design, and this screen plate is installed in a turntable screen printing machine. The dye is printed on the cloth while rotating the plate in a rotary manner.
JP-A-5-5285 JP-A-5-138856

  However, the printing and screen printing as described above must be a large-scale apparatus itself, which is very expensive and takes time to produce a printing roller and screen plate. .

  On the other hand, when multicolor printing is performed on a T-shirt, a trainer or the like, a color pattern is also printed with a pigment using a photolithography. Photoengraving using such pigments has the advantage that it can be printed at low cost because color matching is easy and printing is simple. However, in the case of photoengraving using such pigments, the printing surface is raised and the pigments are stiff, so it is not good for those who wear T-shirts and trainers, and it is easy to lose color, and the print surface is cracked. It has the disadvantage of becoming unsightly.

  The present invention has been made to solve such problems, and it is an object of the present invention to provide a photographic dyeing method capable of dyeing a photographic pattern on a fabric by a very simple method and dyeing the fabric with a good texture. It is said.

  In order to solve the above-mentioned problems, the photographic dyeing method of the present invention is a method for photoengraving a printing plate that has been color-separated into at least three primary colors from a color positive film and printing the sublimation dye on transfer paper using this printing plate. It is characterized in that paper is produced and this transfer paper is heated and transferred to a cloth by a heating device.

  According to the said structure, since it dyes | stains with a sublimable dye, it can dye | stain without impairing the feeling of cloth | dough in a fabric without a burr feeling. Also, the print does not peel off or lose color.

The photographic dyeing method of the present invention is characterized by heating at a superheated temperature of about 200 ° C. for about 20 seconds in the process of heating and transferring the sublimable dye on the transfer paper to the fabric by a heating device.
Further, the photographic dyeing method of the present invention judges the color of the sublimation dye dyed on the fabric as a trial, and determines the concentration of the sublimation dye as the three primary colors of cyan (C), magenta (M), and yellow (Y). The operation of adjusting the color to the color of the color positive film is repeated while finely adjusting the density ratio of black (BK). With the above configuration, a color close to a color positive film can be reproduced on the fabric.

  In the photographic dyeing method of the present invention, the pigment is not fixed with glue as in the conventional thermal transfer, but is dyed with a sublimation dye, so there is no crispness and the texture of the fabric is not impaired, and the print is peeled off. It is possible to manufacture high quality products with high fastness without fading or fading. Furthermore, dyeing can be easily performed at low cost by using a press apparatus for the heat treatment.

  The present invention relates to a method for photographic dyeing on synthetic fibers such as polyester using a sublimable dye. The sublimable dye is a dye which is sublimated at high temperature and high pressure (changes the dye from a solid to a gas) to be dyed on a fabric. The sublimable dye generally vaporizes at around 150 ° C. to 200 ° C., becomes a molecular level, and is dyed on the fiber. Sublimation dyes have good dyeing properties on polyester fibers. Once dyed, they do not lose color, and there is no crisp and stiff feeling when printed with pigment-based inks. Absent. Moreover, the prints are not peeled off or discolored, and dyeing with excellent fastness is possible. Furthermore, since the color of the sublimation dye does not fade even after washing, it is possible to wash white clothes together during washing, and it is not necessary to pay attention to washing because it does not change color due to washing. Further, when dyeing using this sublimation dye, a large amount of water is not required as compared with conventional chemical dyes, so that there is no problem of water pollution and it is excellent as dyeing.

Hereinafter, embodiments of the photographic dyeing method of the present invention will be described with reference to the drawings.
FIG. 1 is a flowchart showing an embodiment of the photographic dyeing method of the invention. 2-6 is explanatory drawing for demonstrating the said flowchart. FIG. 2 is an explanatory diagram in the case of color separation of a positive film into four colors, FIG. 3 is a process diagram showing an example of photoengraving, FIG. 4 is an explanatory diagram in the case of printing transfer paper with a printing machine, and FIG. FIG. 6 is an explanatory perspective view when sublimation dyeing is performed from transfer paper onto a fabric, and FIG. 6 is a perspective view of a product after dyeing is completed.

  As shown in FIG. 1, first, in step 1 (S1), a color positive film is prepared. 2 in FIG. 2 indicates a color positive film. The production of the color positive film 1 is the same as that produced by a conventional photographic technique. That is, in this embodiment, for example, a subject is photographed using a film having an eye larger than that of a normal photographic film. However, the design is free, and you can shoot flowers as shown in Fig. 1, shoot people, landscapes, animals, etc. There are no restrictions on the subject. In addition, there is no limitation on the color of the subject, and even complex combinations of multiple colors can be handled.

  Next, in step 2 (S2), the color positive film photographed in step 1 (S1) is color-separated into at least three kinds of films which are the three primary colors. In this embodiment, black is added to the three primary colors. Color separation into four colors. The three primary colors of colored light are red (R), green (G), and blue (B), but the three primary colors of color materials such as paint and printing ink are cyan (C blue-green), magenta (M reddish purple), and yellow ( Y yellow), the color separation of the above-described color positive film 1 separates the three primary colors of cyan (C), magenta (M), yellow (Y) and black (BK) into four colors. .

  Next, in step 3 (S3), cyan (C), magenta (M), yellow (Y), and black are used in photoengraving using the four positive films 2 to 5 color-separated in step 2 (S2). (BK) printing plates 6 are respectively produced. The conventional photoengraving method is also used as the photoengraving method for producing the printing plate 6. FIG. 3 is a process diagram showing the processing steps of the positive type PS plate, but the present invention is not limited to such a plate method.

  Next, the manufacturing process of the printing plate will be described with reference to FIGS. In FIG. 3A, 6 indicates a PS plate, and a photosensitive resin 8 is applied to the surface of the metal plate 7. In FIG. 3 (b), one positive film 2 out of the four positive films 2 to 5 is placed on the surface of the PS plate 6. FIG. 3C shows a baking process. In the positive type PS plate 6, the portion of the photosensitive layer exposed to light (ultraviolet rays) 9 is photodecomposed and dissolved by development to become a non-image portion 8a, and the portion not exposed to light becomes an image portion 8b. FIG. 3D shows a process for developing. In this development processing, the photosensitive resin layer of the non-image area 8a that has been exposed to light is removed. Usually, the non-image portion 8a is alkali-soluble, and is dissolved and removed with an alkaline aqueous solution such as sodium phosphate or sodium silicate. FIG. 3E shows a rubber-drawing process, in which the rubber liquid 10 is drawn on the non-image portion 8a in order to protect the surface of the non-image portion 8a and increase the hydrophilicity. In this way, printing plates of cyan (C), magenta (M), yellow (Y), and black (BK) are produced.

  Next, in step 4 (S4), the design of the color positive film 1 is printed on the transfer paper using the sublimation dye, using the printing plate produced in step 3 (S3). FIG. 4 shows a simplified case of offset printing. The printing plate 6 (not shown in FIG. 4) produced in step 3 (S3) is wound around the plate cylinder 11. The surface of the printing plate 6 is moistened with water by the dampening roller 12, and the sublimation dye 14 is applied to the surface of the printing plate 6 by the ink roller 13. The sublimable dye 14 on the surface of the printing plate 6 is transferred to the surface of the blanket cylinder 14 by the rotation of the plate cylinder 11. The transfer paper 17 is passed between the rotating blanket cylinder 15 and the impression cylinder 16, and the sublimation dye 14 on the blanket surface of the blanket cylinder 15 is printed on the surface of the transfer paper 17. Using four printing plates of cyan (C), magenta (M), yellow (Y), and black (BK), the above printing process is repeated to print four colors of sublimation dye on one transfer paper. To do.

  Next, in step 5 (S5), trial printing is performed on the fabric using the transfer paper printed in step 4 (S4). Since this test printing method is the same as the process of thermocompression bonding the transfer paper to the fabric in step 8 (S8), details of thermocompression bonding will be described in step 8 (S8). In step 5 (S5), a color matching method will be described. When the transfer paper 17 is thermocompression bonded to the fabric, the color is different from that of the original color positive film 1 in most cases. Difficulties in color matching when dyeing using a dye, unlike a pigment, is that the color in which the dye is dissolved in water or other solvent is different from the color after dyeing on the fabric. That is, the color of the photograph printed on the transfer paper 17 is completely different from the color of the photograph dyed on the fabric 18. Therefore, the density of the sublimation dye when printing on the transfer paper 16 is changed assuming the color of the dye after the thermosublimation dye is thermocompression bonded. It is determined from the test printed fabric which cyan (C), magenta (M), yellow (Y), and black (BK) sublimation dye concentration is too dark or too light. In this case, for example, whether yellow (Y) is a strong yellow (Y) of cyan (C) or a strong yellow (Y) of magenta (M) is determined while considering the three primary colors of the color material. Further, when enhancing the shadow, the black (BK) sublimation dye is increased.

  In step 6 (S6), the density of the sublimation dyes of cyan (C), magenta (M), yellow (Y), and black (BK) is changed according to the determination of the sublimation dye density in step 5 (S5). . For example, if the density of cyan (C) is too high and the density of yellow (Y) is too low, the density of cyan (C) is reduced to increase the density of yellow (Y). However, if the density of cyan (C) and yellow (Y) is changed, the relationship between cyan (C) and magenta (M) and the relationship between yellow (Y) and magenta (M) will also differ slightly. There is. If the relationship between cyan (C) and magenta (M) and the relationship between yellow (Y) and magenta (M) differ from the color of color positive film 1, the density of magenta (M) may have to be increased or decreased. is there. Then, the density of cyan (C) and yellow (Y) is further changed to match the color of the color positive film 1. That is, the hue is matched with the actual color of the color positive film 1 while finely adjusting the density ratio of the three primary colors of cyan (C), magenta (M), and yellow (Y). Furthermore, highlights are adjusted by changing the density of black (BK).

  The color matching operation described above is performed by repeating the steps of step 4 (S4) → step 5 (S5) → step 6 (S6) → step 4 (S4) many times to obtain the color of the color positive film 1 and the fabric 18. It is necessary to match the dyed colors.

  Further, in Step 7 (S7), the transfer paper 16 is subjected to actual printing at the concentration of the sublimation dye determined by the color matching completed in Step 4 (S4), Step 5 (S5), and Step 6 (S6). The method of printing with the printing machine is performed as described in step 4 (S4).

  In step 8 (S8), a sublimation dye is thermocompression-bonded to the polyester fabric 18 with a press device using the transfer paper 16 printed in step 7 (S7). FIG. 5 shows a state in which the sublimation dye of the transfer paper 16 is thermocompression bonded to the polyester-based T-shirt 18 by the press device 19. As shown in FIG. 5, the press device 19 for thermocompression bonding is a very simple device. As a basic configuration, the device main body 20 including a power supply device and a control device, and the device main body 20 are provided. A work table 21 and a heating plate 23 provided on the apparatus main body 20 so as to be movable up and down by a handle 22 are constituted. The heating plate 23 is maintained at a predetermined temperature, specifically, a temperature around 200 ° C. Further, a timer is attached to the apparatus main body 20 so as to notify the operator when the time comes. The T-shirt 18 is placed on the work table 21 of the press device 19, and the transfer paper 16 is placed on the T-shirt 18. Then, the handle 22 is pulled and the heating plate 23 is used to sublimate the sublimation dye on the transfer paper 16 to be dyed on the fabric 18. This dyeing for sublimation dyeing is as described above. The optimum heating temperature is about 200 ° C. Even if the temperature is somewhat below 200 ° C. or above, normal colors are not produced. The temperature of the heating plate is preferably in the range of ± 5% at 200 ° C. The heating time is optimally about 20 seconds at 200 ° C. If the heating time is too shorter than 20 seconds, the dyeing is insufficient, and if it is too long, the color changes.

When the dyeing is completed, the same subject as the colorful color positive film 1 can be dyed on the cloth as shown in FIG. Further finishing work is performed and the process is completed in step 9 (S9).
As described above, the present invention enables photographic dyeing with a simple operation, and is excellent in dyeing various varieties in a relatively small amount. Moreover, instead of fixing the pigment with glue as in conventional thermal transfer, the dyeing and coloring occurs by printing the sublimation dye on the transfer paper 16 and sublimating the fabric 18 with high pressure and high heat. It does not impair the texture of the fabric, and does not peel off or lose color, making it possible to produce a high-quality product with high fastness. Further, by using the press device 19 for the heat treatment, it can be dyed easily at low cost.

It is a flowchart showing embodiment of the photographic dyeing | staining method of this invention. It is explanatory drawing in the case of carrying out color separation of the positive film of the photographic dyeing | staining method of this invention into four colors. It is process drawing which manufactures the photoengraving of the photographic dyeing | staining method of this invention. It is explanatory drawing at the time of printing the transfer paper of the photographic dyeing | staining method of this invention. It is a description perspective view at the time of sublimation dyeing from transfer paper to fabric in the photographic dyeing method of the present invention. It is a perspective view of the product which dyeing | staining of the photographic dyeing | staining method of this invention was completed.

Explanation of symbols

1 Color positive film 6 Printing plate 14 Sublimation dye 16 Transfer paper 18 Fabric 19 Heating device

Claims (3)

A printing plate that has been color-separated into at least three primary colors from a color positive film is photoengraved, and a transfer paper is produced by printing a sublimation dye on the transfer paper using this printing plate, and this transfer paper is heated and transferred to a fabric by a heating device. A photographic dyeing method comprising: 2. The photographic dyeing method according to claim 1, wherein the heating temperature is about 200 [deg.] C. for about 20 seconds in the process of heating and transferring the sublimation dye on the transfer paper to the fabric by a heating device. The color of the sublimation dye that was dyed on the fabric as a trial was judged, and the density of the sublimation dye was subtly determined from the three primary colors of cyan (C), magenta (M), and yellow (Y) and black (BK). The photographic dyeing method according to claim 1, wherein the process of adjusting the color to the color of the color positive film is repeated while adjusting the color.

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