Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1987-07-16
1989-03-21
Shah, Mukund J.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430505, 430552, 430553, 430558, 430956, 430957, 430966, G03C 146, G03C 108, G03C 726, G03C 732
Patent
active
048142611
ABSTRACT:
A silver halide photographic material is disclosed. The photographic material comprises a support having provided thereon at least one light-sensitive silver halide emulsion layer, the silver halide emulsion layer or a layer adjacent to the emulsion layer comprising a compound represented by the following formula (I): ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3, which may be the same or different, each represents a hydrogen atom or a group cleaved by an alkali; R.sub.4 represents an electron attracting group having .sigma..rho. value of Hammett's substituent constant of 0.3 or more; R.sub.5 represents a group substitutable on the benzene ring; n represents 0 or 1; and DI represents a development restrainer or a precursor thereof; and when any two of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are adjacent each other, each of the two groups may represent a divalent group and the two groups may be bonded to form a heterocyclic group.
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Hirano Shigeo
Ichijima Seiji
Fuji Photo Film Co. , Ltd.
Shah Mukund J.
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