Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1995-04-26
1996-05-14
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430567, 430581, 430587, G03C 116
Patent
active
055166288
ABSTRACT:
A photographic element with a silver halide emulsion having a maximum sensitivity in the visible region at less than 480 nm and being sensitized by a dye of formula (I): ##STR1## wherein: X.sub.1 and X.sub.2 each independently represent S, Se or O; R.sub.1 and R.sub.2 are, independently, an alkyl group; Z represents an aromatic group or heteroaromatic group that is directly appended to the benzene ring shown or is attached through a linking group provided that the atoms of the linking group are sp.sup.2 hybridized, or Z can be a fused aromatic ring group; the benzene rings shown can be further substituted or unsubstituted, and; A' is one or more ions as needed to balance the charge on the molecule.
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Chand Vishwakarma L.
Parton Richard L.
Stegman David A.
Williams Kevin W.
Chea Thorl
Eastman Kodak Company
Rice Edith A.
Stewart Gordon M.
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