Silver halide photographic materials.

摘要

Disclosed is a silver halide photographic material containing a compound of a general formula (1) or (2): ED - (Time)t - Y - L - Z (1> wherein ED represents a group that releases the moiety (Time)t-Y-L-Z by reaction with an oxidation product of a developing agent; Time represents a divalent linking group; t represents 0 or 1; Y represents a divalent group comprising a hetero atom through which Y bonds to the moiety ED-(Time)t; L represents a divalent group which is capable of being cleaved by reaction with components in a developer; and Z represents a monovalent functional group that expresses a development inhibiting effect; wherein Time, t, L and Z have the same meanings as above; Y represents a divalent group comprising a hetero atom through which Y bonds to the moiety R1 represents an aliphatic group or an aromatic group; G1 represents is G2 represents a mere bond, -O-, -S- or R2 has the same meaning as R1 or represents a hydrogen atom; when the compound has plural R2's, they may be same as or different from each other; and one of A1 and A2 represents a hydrogen atom, and the other represents a hydrogen atom, or an acyl group, an alkylsulfonyl group or an arylsulfonyl group. The material may reproduce excellently a line original to form an ultra-hard image having a high background density. It also has a broad exposure latitude in halftone dot image-taking work and can form an ultra-hard halftone dot image with a high image quality. The material is useful in formation of ultra-hard negative images by photomechanical process.