Thermal imaging method

Details Thermal imaging method Thermal imaging method

1986-05-14

1988-01-19

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

Composition or product

430343, 430945, 430955, 430964, 503218, 503221, 503222, 548207, G03C 172

Patent

active

047204494

ABSTRACT:
A thermal imaging method is provided which comprises heating imagewise a di- or triarylmethane compound possessing within its di- or triarylmethane structure an aryl group substituted in the ortho position to the meso carbon atom with a moiety ring-closed on the meso carbon atom directly through a nitrogen atom, which nitrogen atom is also bound to a group with a masked acyl substituent that undergoes fragmentation upon heating to liberate the acyl group for effecting intramolecular acylation of said nitrogen atom to form a new group in the ortho position whereby the di- or triarylmethane compound is rendered colored in an imagewise pattern corresponding to said imagewise heating.

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patent: 4380629 (1983-04-01), Yamashita et al.
patent: 4500897 (1985-02-01), Matsuda et al.
Kosar, J., Light-Sensitive System: Chemistry and Application of Nonsilver Halide Photographic Processes, New York, NY John Wiley and Sons, Inc., 1976, pp. 402-419.

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