Photographic light-sensitive material

Details Photographic light-sensitive material Photographic light-sensitive material

1984-08-15

1986-10-21

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430212, 430218, 430222, 430223, 430443, 430543, 430559, 430562, 430564, 430566, 430598, 430611, 430614, 430955, 430957, 430958, 430959, G03C 140, G03C 554, G03C 108, G03C 134

Patent

active

046185631

ABSTRACT:
A silver halide photographic light-sensitive material is described, comprising a support having thereon a light-sensitive silver halide emulsion layer having associated therewith a blocked photographic agent represented by formula (I) ##STR1## wherein A represents a photographically useful agent moiety, which may have a timing group; X.sup.1 and X.sup.2 each represents a carbonyl group, a sulfonyl group, or a sulfinyl group; Z represents an atomic group forming a 5-membered, 6-membered, or 7-membered ring; R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, an alkoxy group, an acyl group, a sulfonyl group, or a heterocyclic group; R.sup.3 represents an alkyl group, an alkenyl group, a cycloalkyl group, a heterocyclic group, an aryl group, or an aralkyl group; m represents 0, 1, or 2; n represents 0 or 1; and the total of m+n is 1, 2, or 3. The precursor of photographic agent is completely stable during the preservation of the photographic light-sensitive material and releases a photographically useful agent at a desired time during processing of the photographic light-sensitive material. The precursor can exhibit its function to a substantial degree under mild conditions, such as in a pH range of from 9 to 12.

REFERENCES:
patent: 3888677 (1975-06-01), Abele et al.
patent: 4263393 (1981-04-01), Chen
patent: 4350752 (1982-09-01), Reczek et al.
patent: 4363865 (1982-12-01), Reczek et al.
patent: 4410618 (1983-10-01), Van Meter et al.

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