Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Reexamination Certificate
2005-01-25
2005-01-25
Schilling, Richard L. (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
C430S551000
Reexamination Certificate
active
06846620
ABSTRACT:
Photographic elements are disclosed comprising a silver halide emulsion layer having associated therewith a dye forming coupler and a compound of the following Formula I:in-line-formulae description="In-line Formulae" end="lead"?R1R2N—C(O)—(R)p—C(O)—NR3R4in-line-formulae description="In-line Formulae" end="tail"?wherein R represents a hydrocarbon linking group; p=0 or 1; and each of R1, R2, R3and R4independently represents an aromatic, cyclic, linear or branched chain hydrocarbon group, or R1and R2or R3and R4combine together to form a ring with the associated nitrogen atom to which they are attached; with the proviso (i) at least one of R1, R2, R3and R4comprises an aromatic, cyclic, secondary alkyl, or otherwise or branched hydrocarbon group, or (ii) at least R1and R2or R3and R4combine together to form a ring with the associated nitrogen atom. Photographic elements of the present invention upon exposure and photographic processing exhibit good activity and yield dye images that have unexpected and substantial improvements in the stability of the formed image dyes.
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Eiff Shari L.
Mura, Jr. Albert J.
Russo Gary M.
Vargas J. Ramon
Anderson Andrew J.
Schilling Richard L.
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