Imageable articles having dye selective interlayers

Details Imageable articles having dye selective interlayers Imageable articles having dye selective interlayers

G - Physics

03

C

G03C 8/40 (2006.01) G03C 1/498 (2006.01)

Patent

CA 2118500

2118500 9321562 PCTABS00027 The use of copolymers of vinylidene chloride and vinyl pyrrolidone as selective diffusion media in dye-diffusive photothermographic imaging constructions is disclosed. Unoxidized phenolic leuco dye molecules diffuse into a film of these copolymers but do not readily diffuse out. In contrast, their oxidized dye forms, which are quinoidal in nature, readily diffuse through these interlayers resulting in improved image stability and color separation.

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