Optical image forming material

Details Optical image forming material Optical image forming material

1995-09-14

1997-01-21

Angebranndt, Martin J.

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

503225, 503226, 503216, 430337, 430338, 430350, 430348, G03C 1675

Patent

active

055958532

ABSTRACT:
An optical image forming material in which the background portions thereof are not color developed (not fogged) during storage in the dark after fixing, comprising a support having thereon at least a coating layer containing (1) microcapsules containing a leuco dye which is form color when it is oxidized and a photooxidizing agent, and (2) a reducing agent and a fixing accelerator present outside of the microcapsules. The reducing agent is a hydroquinone derivative substituted by an alkyl group at each of 2- and 5-positions thereof, and the fixing accelerator is 2,2-bis(4-hydroxy-phenyl)propane.

REFERENCES:
patent: 4803192 (1989-02-01), Saeki et al.
patent: 4929530 (1990-05-01), Saeki et al.
patent: 4962009 (1990-10-01), Washizu et al.
patent: 4985331 (1991-01-01), Saeki et al.
patent: 5389489 (1995-02-01), Yanagihara et al.
JP 03-191341 (abstract only) Aug. 1991 (Saeki et al.).
JP 02-143252 (abstract only) Jun. 1990 (Ozawa et al.).

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