Stabilized leuco phenazine dyes and their use in an imaging syst

Details Stabilized leuco phenazine dyes and their use in an imaging syst Stabilized leuco phenazine dyes and their use in an imaging syst

1984-10-01

1987-03-03

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

430338, 430336, 430332, 430340, G03C 152

Patent

active

046475257

ABSTRACT:
3,7-Diamino phenazine leuco dyes stabilized in the 10-position with acyl substituents, said acyl substituents being themselves substituted with electron withdrawing groups. These dyes are suitable for use in thermographic imaging systems wherein the leuco dye is in a composition containing a nitrate salt.

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patent: 4379835 (1983-04-01), Lowrey et al.
patent: 4386154 (1983-05-01), Smith et al.
patent: 4423139 (1983-12-01), Isbrandt et al.
patent: 4460677 (1984-07-01), Smith et al.

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