Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Patent
1992-04-20
1993-08-31
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Diffusion transfer process, element, or identified image...
430214, 430215, G03C 554
Patent
active
052408094
ABSTRACT:
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 copolyers 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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Ishida Takuzo
Prementine Glenn S.
Evearitt Gregory A.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Schilling Richard L.
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