| 摘要 |
A silver halide photographic material composed of a support having thereon at least one silver halide photosensitive emulsion layer, at least one layer of the material containing a blocked photographic reagent precursor represented by formula (I): (I) wherein X1 represents a divalent linking group containing a hetero atom bonded to the carbon atom, provided that X1 is linked to the carbon atom by a group other than or -SSO2-; PUG represents a photographically useful group containing a hetero atom bonded to X1; W represents =N- or ; Y1 represents hydrogen or a group capaable of being substituted; Z represents an atomic group necessary for forming a heterocyclic ring, provided that when W represents a group, the group adjacent to W in the heterocyclic ring is a group other than (2) or wherein R1, R2, R3, R4 and R5 each represents hydrogen or or group capable of being substituted; and m is 0 or 1, with proviso that when m is 0, the photographically useful group represented by PUG is bonded to a carbon atom via heteroatom of PUG. The photographic materials have superior stability during storage, and are capable of releasing a photographic reagent with specifically required timing during processing, and in a wide pH range.
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