JPS62149476A - Color forming method for thermal color forming paper - Google Patents

Abstract

PURPOSE:To enable multiple colors to be formed by a thermal color forming paper, by a method wherein two or more kinds of thermal color forming elements are applied to the surface of a base paper, heat is applied to the paper to form colors, at least one kind of the color forming elements are fixed to fix a first color, and heat is again applied to form a color by the remaining thermal color forming elements. CONSTITUTION:Two kinds of color forming elements 2, 3 having different photo- fixation characteristics are applied to the surface of a base paper 1. When the base paper 1 thus coated is passed through a printer to heat a part thereof in contact with a thermal head, the color forming elements 2 form a green color, whereas the color forming elements 3 form a red color. By the colors formed by the two kinds of the color forming elements 2, 3, black characters or symbols are developed on the surface of a season ticket 6. When being irradiated with UV rays, a diasonium salt in the color forming elements 2 at a part not heated is photo-decomposed to be a non-color-forming phenol compound. The color forming elements 3 are not photo- decomposed under irradiation with UV rays, and photo-fixation is effected by the irradiation with UV rays. When the season ticket 6 is again passed through the printer, only the color forming elements 3 at the heated part form a color to develop red characters.

Description

[Detailed description of the invention] r Industrial application field] The present invention is used in computers, word processors 4+, etc. to display characters and symbols by applying heat.
The present invention relates to a coloring method for thermosensitive coloring paper that can simultaneously produce a plurality of colors on the same paper surface.

[Conventional technology]

Conventionally, various printers have been used in combiators, word processors, and the like to display characters, figures, symbols, etc. as output. This printer uses the dot method, which fixes the ink from the ink ribbon directly onto the paper, the natural method, which uses heat to develop colors on thermal paper, and the brush transfer method, which transfers the ink from the ribbon onto the paper using heat. Various methods were adopted such as tags. However, conventional printers can only mark the surface of paper with heavy colors such as black or blue, and can display multiple colors such as red and black or red and green. It was something that could not be done. Also,
In the second transfer method, which adds an effect to the ink ribbon and transfers the ink that adheres to the surface of the paper, it is possible to make the ribbon thinner, and also: divide the ribbon into two colors at the top and bottom. It is possible to transfer multiple types of dyes onto the surface of paper by applying a ribbon.
It is time-consuming to use f or holding t:'l''t 'J +f>, and the transferred dye can easily be left behind by a knife or a container. After printing, there is a risk that characters, symbols, figures, etc. may be altered or forged.

On the other hand, thermal coloring paper, in which a coloring dye is applied to the surface of the recording paper in advance and the color is developed from the surface by applying heat, is highly reliable, easy to maintain, and has good contrast. There is. Additionally, paper is inexpensive and the recording speed is extremely high compared to dot printing methods and thermal transfer methods. Although this thermosensitive coloring paper is widely used because of the above-mentioned excellent features, it has the drawback that it is completely unable to develop multiple types of colors.

[Problem that the invention seeks to solve]

The present invention aims to maintain the above-mentioned characteristics of the thermosensitive coloring paper as they are, and to enable the development of multiple colors using the thermosensitive coloring paper, which was not possible in the past.

(Means for Solving the Lij Problems) In the present invention, at least two or more types of heat-sensitive coloring elements having different photofixing times are applied to the surface of a mount, and heat is applied to the surface of the mount using a thermal head to completely separate all the pigments. After coloring the dye in the heat-sensitive coloring element, the first color is fixed by fixing at least one type of 8-thermal coloring element, and then heat is applied to the surface of the mount again using a thermal head. To provide a coloring method for thermosensitive coloring paper, characterized in that a plurality of colors are developed by developing a second color using the remaining types of thermosensitive coloring elements that are not fixed when added.

[Effect]

In the present invention, a heat-sensitive coloring element is applied in advance to the surface of a backing paper, which is heat-sensitive 212 paper. When applying heat, the first color is displayed by coloring all the coloring elements in the area where heat is applied, and after that, the coloring elements of a specific color are fixed and other coloring elements are not fixed. put. By applying heat again after this fixation, the remaining unfixed pigments can be colored to reveal other colors.

(Example〕 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the cross-sectional structure of the heat-sensitive coloring paper in this example, and this heat-sensitive coloring paper is divided into three layers.

First, on the surface of a stiff and somewhat thick mount 1, two coloring elements 2.3 having different light fixing properties are mixed and applied to an even thickness. A protective layer 4 for Ohakko I is coated on the surface of the hemlock to prevent abrasion of the hemlock. This heat-sensitive coloring element 2.3 is a well-known pudding 1, for example, a mixture of diazonium salt, coupler salt JS, binder, pigment, etc., and coloring element 2 is one that develops a green color when heated. The coloring element 3 has the property of developing a red color when heated. Each layer of the thermosensitive coloring paper having a three-layer structure is dried and fixed.

Next, in this embodiment, a commuter pass sheet will be taken as a specific example, and a thermal coloring paper cut into the shape of a commuter pass will be described.

Figure 2 shows the commuter pass paper 5 in this embodiment, which is cut into a slightly rectangular shape, and by applying heat to appropriate locations on its surface with a printer, characters, symbols, etc. are displayed. It can be used as a commuter pass 6.

Next, in order to pass this commuter pass paper 5 through a printer to display characters and figures created by a computer, word processor, etc. on the surface of the commuter pass wc5,
When passing through a printer, a thermal head contacts the printer and applies heat to the corresponding location, causing the thermal head to display characters, graphics, etc. at predetermined locations. Figure 3 shows the state in which the commuter pass paper 5 is passed through the printer for the first time, and the two hairs added to the surface of the commuter pass paper 5 are given to each coloring element 2.3 to represent the characters and symbols specified in advance. Expressed in form - known. For example, in Figure 3, from the top row,
Riding section 7, Validity period 8, Starting date of ride 9, Last day of validity of the commuter pass 10, Fare corresponding to the period of validity 11, Name of issuing station 12, Name of holder 13, Age of holder 14 will be colored and will be accepted as the standard jjjl ticket 6. In this case, both of the two coloring elements 2 and 3 coated on the surface of the commuter pass paper 5 are colored by heat, and the coloring element 2 is colored green, and the coloring element 3 is colored red.

Therefore, a black color is synthesized by the colors produced by the two coloring elements 2.3, and black characters and symbols appear on the surface of the commuter pass 6 shown in FIG.

After the black characters in FIG. 3 are colored, the surface of the commuter pass 6 is irradiated with ultraviolet rays for a predetermined period of time. When irradiated with ultraviolet rays,
The diazonium salt in the part of the chromophoric element 2 that is not heated is photodecomposed, its color forming ability is removed, and it changes into a phenol compound that does not develop color even if heat is applied again. However, the coloring element 3, which develops a red color, is not photodecomposed by this ultraviolet irradiation and maintains its coloring ability as it is. Photofixing is performed by irradiating this ultraviolet light. Then, the commuter pass 6 shown in FIG. 3 is passed through the printer again, and a packet is added to a predetermined location to develop color E. In other words, green coloring? ``The ability of F2 to develop color is not photofixed, so only the coloring element 3, which is not photofixed and develops a red color, is colored, and in the part where the orbit is added, only the coloring element 3 is colored. It develops color and appears as red letters.Figure 1 shows the second time the printer is used to display only the red color, and shows the predetermined mark 15 and its commuter pass. 6, the gender sign 16 will be colored red. Therefore, on the surface of the commuter pass 6 that has passed through the printer twice in Fig. 4, there will be a black part and a red part. The colored part remains, and the red color can be clearly distinguished when used in the fixed!IJI? becomes easier.

In addition, in this example, it is fixed! Although the explanation has been made regarding the application to the tJl ticket 6, it can be applied not only to the commuter pass 6, but also to anything that is not used for recording, or to display the contents of the ε means. I can do it. Also,
In this embodiment, certain characters are displayed on the surface of the commuter pass 6, but it is also possible to display, for example, the distinction between adults, students, and children, or the gender of the holder. do not have.

〔Effect of the invention〕

Since the present invention is constructed as described above, it is possible to easily produce multiple types of colors on heat-sensitive coloring paper that can be produced stably and at low cost, making it easy to distinguish the contents when reading characters and symbols. Therefore, color display using heat-sensitive coloring paper can be easily performed.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view showing the structure of the heat-sensitive coloring paper of the present invention, Figure 2 is a plan view showing the state in which the present invention is applied to commuter pass paper, and Figure 3 is a black color in designated areas of Meishun paper. Figure 4 is a surface view of a commuter pass showing the state in which characters such as . be. DESCRIPTION OF SYMBOLS 1... Mounting paper, 2.3... Coloring element, 4... Protective layer, 5... Commuter pass paper, 6... Commuter pass. Patent Applicant Convenience Store Co., Ltd. Agent Patent Attorney Japan Philippines 11 Ming Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] After applying at least two or more types of heat-sensitive dyes with different photofixing times to the surface of the mount, and applying heat to the surface of the mount with a thermal head to develop the color of each heat-sensitive dye,
The first color is fixed by fixing at least one type of heat-sensitive coloring element, and then the second color is fixed by applying heat to the surface of the mount again using a thermal head, using the remaining types of heat-sensitive coloring elements that are not fixed. A coloring method for heat-sensitive coloring paper, which is characterized by developing multiple types of colors by coloring.