Color image forming method using leuco dyes and recording materi

Details Color image forming method using leuco dyes and recording materi Color image forming method using leuco dyes and recording materi

1988-05-27

1991-03-05

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

430211, 430222, 430235, 430241, 503204, 503221, G03C 172

Patent

active

049977415

ABSTRACT:
A color image forming method comprises bringing a developer into contact with a recording material comprising a support and a recording layer containing at least two kinds of leuco dyes being capable of forming colors different in hue from each other on contact with the developer. The leuco dyes are a yellow color forming leuco dye, a magenta color forming leuco dye and/or a cyan color forming leuco dye. The equilibrium constants of the reactions between these dyes contained in the recording layer and the developer are not lower than 0.05.

REFERENCES:
patent: 4622565 (1986-11-01), Watanabe et al.
patent: 4629676 (1986-12-01), Hayakawa et al.
patent: 4775656 (1988-10-01), Harada et al.
Translation, Japanese Patent Public Disclosure 45084/1983 to Mitsubishi Paper Mills, Ltd.

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