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Recording materials field

(Black color, colored) color formers

<heat sensitive paper>

<Pressure sensitive paper>

Dye precursors which have been applying to heat color development transparent films, heat sensitive paints and others beside the application to color development materials for heat sensitive recording papers and pressure sensitive copying papers are called as “Color formers”.

Especially, the color former “ODB” which was developed by the joint research of NCR company in U.S.A. with us in 1970 has been enjoying fine reputation in not only the domestic market but also the overseas market, and has obtained world-wide market share in the field of dyes for information recording materials as the epoch-making world’s first product which could develop black color by single compound.

Products Line-up

Black (Developed hue : black color)

  • ODB


  • ODB-2


  • ODB-4


  • ODB-250


  • Black-XV


Blue (Developed hue : blue color)

  • Blue-63


  • Blue-502


Green (Developed hue : green color)

  • GN-169


  • GN-2


  • Green-118


Red (Developed hue : red color)

  • Red-40


  • Red-8


Application examples of color formers

Dyes for heat sensitive and pressure sensitive papers

Heat sensitive recording papers have structure that dyes (color formers), developers and others are dispersed by poly-vinyl alcohol or others as texturizers and coated on papers. The mechanism of color development is the melt mixing of dyes and developers by heating.
On the other hand, in case of pressure sensitive copying papers, a paper coated by a capsule including dyes and a paper coated by developers are superimposed. By press these papers, the capsule is destroyed and dyes and developers are contacted each other and color is developed.
In dyes (color formers), there are black color developing one, green color developing one, red color developing one and yellow color developing one. Furthermore, there are dyes having the absorption area in near-infrared rays, and they have been applying to OCR application.

Dyes for heat sensitive materials

Heat sensitive materials which change color with temperature by utilizing the reversible reaction between dyes (color formers) and developers compose of dyes, developers and the material which control the color development (such as alcohol type texturizer). As this dye changes its color reversibly at the fixed temperature, it has been applying to indication of the suitable temperature of foods or drinks and the color indication of toys.

Transparent heat sensitive dyes for medical use

The image is created by the thermal generation reaction of dyes (color formers) and developers. We can realize high gradation by selecting multi-dyes and the kind of binder resins. Furthermore, by adjusting the amount of binders and the grain size of developers, we can obtain transparency by melting dyes. For this purpose, our dyes have been applying.

Dyes for printing

In place of PS plate which needs complicated steps and long time in plate making process, CTP method which prepares the printing plate by laser directly from the data in the computer has become the main stream. Among them, especially the thermal CTP method which can be applied in a bright room and has same or better printability than PS plate has become popular. And as the dyes for photo-thermal agent for CTP which is required for manufacturing CTP, our own cyanine dyes have been applying.
Furthermore, sublimation printer having high resolution and high gradation and enabling to create photographic printing easily has been receiving high reputations. As the sublimation dyes, our dyes have been applying widely.

Application examples of dyes for printing

Sublimation dyes

The sublimation transfer printing method is the printing method of the image by making thermal transfer ink ribbons melt and making dyes sublimate by the heated head. Compared with the conventional ink jet printing system, this method has excellent concentration gradation properties and is possible to develop the high image quality full color image which is almost same level with the silver halide photography. Our sublimation dyes can be applied to this sublimation transfer printing method and have excellent definition and toughness in various respects. Especially, our dyes in this line are suitable for application to thermal transfer ink ribbons to create full color image having excellent concentration gradation properties of the developed color and light fastness.

  • Sublimation printing looks just like the real one

  • Conventional ink-jet printing

Photo-thermal conversion dyes for CTP

In the plate making process for printing, the process to print the printing plate directly from the data such as accumulated and treated images electronically by computer is called as “Computer To Plate”. We call it as “CTP” for short. In case of CTP system, we can expect remarkable rationalization such as save sources and save man power as the film making process can be eliminated. Recently, by increasing the types of the materials for plate, we can have a lot of options. The plate materials for CTP can divided broadly into 2 categories. One is the optical mode type applicable to visible-light lasers, and the other is the thermal mode type (heat type) applicable to infrared ray lasers. Our dyes for CTP are photo-sensitive dyes for preparation of the original plate for CTP, which absorb effectively light irradiated from the exposing source.

Product Name :YKR-2000 Series

CTP-printing plate