Silver halide photographic light-sensitive material

Details Silver halide photographic light-sensitive material Silver halide photographic light-sensitive material

1992-10-19

1994-02-01

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430487, 430598, 430566, G03C 106

Patent

active

052831582

ABSTRACT:
Disclosed is a silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, a hydrazine compound is contained in said silver emulsion layer or at least one of other layers, wherein said material contains at least one compound represented by Formula I or Formula II, ##STR1## wherein R.sub.1 and R.sub.2 each independently represent an alkyl group, an alkenyl group or an alkynyl group respectively; R.sub.1 and R.sub.2 may form a ring; R.sub.3 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; L.sub.1 represents a divalent linking group; X represents a --[S--L.sub.2 --Y--(L.sub.3)n]-- group or a [--(L.sub.3)n--Y--L.sub.2 --S--]-- group, L.sub.2 represents an alkylene group or an alkenylene group, Y represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, L.sub.3 represents ##STR2## wherein Z.sub.1, Z.sub.2 and Z.sub.3 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; n is an integer of 0 to 1; ##STR3## wherein R4, R5 and R.sub.6 each independently represent an alkyl group, an alkenyl group or an alkynyl group, further Formula II comprises a thioether structure and a --O--Y).sub.l structure, Y represents an alkylene group, an alkenylene group or an arylene group, l is an integer of 2 or more.
The silver halide photographic light-sensitive material is capable offering high contrast.

REFERENCES:
patent: 4914003 (1990-04-01), Yagihara et al.
patent: 4965169 (1990-10-01), Hirano et al.
patent: 4975354 (1990-12-01), Machonkin et al.
patent: 5030547 (1991-07-01), Katoh et al.

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