Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1995-05-12
1996-04-16
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430581, 430583, 430585, 430617, 430619, G03C 1498
Patent
active
055081622
ABSTRACT:
Improved photothermographic elements are spectrally sensitized with a combination of cyanine dyes that provides 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 dye combination utilized as a spectral sensitizer for the silver halide is a combination of a first cyanine dye containing two thiazole nuclei and a second cyanine dye containing a thiazole nucleus and an oxazole nucleus.
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Hayashi et al, "Spectral Sensitization of Thermally Processed Silver Film by Cyanine Dyes", IMAGING SCIENCE, 33, 124 (1989).
Chea Thorl
Eastman Kodak Company
Lorenzo Alfred P.
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