Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1995-05-12
1996-04-23
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430581, 430583, 430585, 430617, G03C 1498
Patent
active
055102360
ABSTRACT:
Improved photothermographic elements are spectrally sensitized with cyanine dyes that provide efficient sensitization together with excellent keeping stability and low dye stain. The photothermographic elements comprise a photosensitive silver halide, an organic silver salt, such as silver behenate, and a reducing agent. The cyanine dye utilized as a spectral sensitizer for the silver halide is an anionic cyanine dye comprising two thiazole nuclei each of which is substituted with an N-sulfoalkyl group wherein at least one of the thiazole nuclei is a 5,6-dihalobenzothiazole nucleus.
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Chea Thorl
Eastman Kodak Company
Lorenzo Alfred P.
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