Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1993-04-14
1995-10-24
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430558, 430384, 430385, 430570, 430581, 430583, 430585, 430587, 430588, G03C 146
Patent
active
054609291
ABSTRACT:
There is disclosed a silver halide color photographic material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer, which comprises a cyan dye-forming coupler represented by formula (Ia) and (a) a sensitizing dye containing a sulfonamide group, (b) negative-type internal latent image-type silver halide grains chemically sensitized to a defined depth from the surface, (c) grains each having a defined spectral sensitivity distribution and a DIR-hydroquinone, (d) a monodisperse silver halide emulsion, (e) non-photosensitive silver halide emulsion wherein the inside or the surface of grains is fogged, (f) a colloidal silver, or (g) a DIR-hydroquinone: ##STR1## wherein Za represents --NH-- or --CH(R.sub.3)--, Zb and Zc each represent --C(R.sub.4).dbd. or --N.dbd., R.sub.1, R.sub.2, and R.sub.3 each represent an electron-attracting group wherein the Hammett substituent constant .sigma..sub.p value is 0.20 or more, provided that the sum of the .sigma..sub.p value of R.sub.1 and the .sigma..sub.p value of R.sub.2 is 0.65 or more, R.sub.4 represents a hydrogen atom or a substituent, if there are two groups R.sub.4 in the formula, they may be the same or different, and X represents a hydrogen atom or a group capable of being released upon a coupling reaction with the oxidized product of an aromatic primary amine color-developing agent, provided that R.sub.1, R.sub.2, R.sub.3, R.sub.4, or X may be a divalent group to form a homopolymer or a copolymer by bonding with a dimer or higher polymer or polymer chain.
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Hara Takefumi
Ikeda Hideo
Nagaoka Katsuro
Nagaoka Satoshi
Shimada Yasuhiro
Bowers Jr. Charles L.
Fuji Photo Film Co. , Ltd.
Letscher Geraldine
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