Silver halide photographic material

Details Silver halide photographic material Silver halide photographic material

1987-11-16

1990-01-09

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430218, 430219, 430222, 430251, 430223, 430543, 430559, 430564, 430566, 430607, 430611, 430613, 430598, 430955, 430957, 430958, 430959, G03C 554, G03C 142, G03C 726, G03C 134

Patent

active

048928119

ABSTRACT:
A silver halide photographic material which comprises a support having coated thereon a light-sensitive silver halide emulsion layer, wherein the photographic material contains a blocked photographic agent represented by the following general formula (I): ##STR1## wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom, or a precursor thereof; R.sup.1 represents a hydrogen atom or a substituent group; and Z represents atoms necessary to form a carboxylic ring or a heterocyclic ring. The blocked photographic agent is completely stable upon storage of the photographic material, and releases a photographic agent at a desired time upon processing of the photographic material. The blocked photographic agent also exhibits its function to a substantial degree over a wide range.

REFERENCES:
patent: 2322027 (1943-06-01), Jelley et al.
patent: 2857274 (1958-10-01), Land et al.
patent: 3497502 (1970-02-01), Taber et al.
patent: 4186012 (1980-01-01), Odenwalder et al.
patent: 4371604 (1983-02-01), Van de Sande et al.
patent: 4420554 (1983-12-01), Ohashi et al.
patent: 4518685 (1985-05-01), Yagihara et al.

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