Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Imagewise heating – element or image receiving layers...
Patent
1984-02-28
1985-04-02
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Imagewise heating, element or image receiving layers...
430203, 430338, 430523, 430531, 430536, 430262, G03C 554, G03C 172
Patent
active
045088101
ABSTRACT:
A transfer medium useful for preparing duplicates of originals such as printed matter. The transfer medium comprises a light-transmissive backing sheet, a layer coated on at least one major surface thereof containing a photooxidizable reactant and an oxygen-sensitizing dye in a film-forming binder and, over said layer, a top coat of an oxygen-permeable, low tack adhesive.
Upon imagewise exposure to light, the transfer medium is desensitized in areas corresponding to the light image areas of the original, resulting in a latent image in the areas corresponding to the dark image areas of the original.
The unoxidized photooxidizable reactant is capable of inter-reacting with a second reactant material borne on the surface of a receptor sheet at a conversion temperature between 70.degree. C. and 150.degree. C. to produce a visibly distinct reaction product. The adhesive coating serves to provide close contact between the transfer medium and the original during the exposure step and between the transfer medium and receptor sheet during the image-forming step.
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patent: 4168171 (1979-09-01), Winslow et al.
"Photothermographic Element, Composition and Process", Research Disclosure, No. 11821, 2/1974, pp. 13 and 14.
Minnesota Mining and Manufacturing Company
Schilling Richard L.
Sell Donald M.
Smith James A.
Weinstein David L.
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