G - Physics – 03 – C
Patent
G - Physics
03
C
96/118
G03C 1/10 (2006.01) G03C 1/06 (2006.01) G03C 1/16 (2006.01)
Patent
CA 1331301
ABSTRACT OF THE DISCLOSURE A negative silver halide photographic material composed of a support having thereon at least one chemically sensitized silver halide emulsion layer at least one hydrophilic colloidal layer containing a hydrazine derivative and a compound having substantially all absorption maxima outside the visible light region represented by formula (I): Image (I) wherein Z11 and Z12 each represents a non-metallic atomic group necessary for completing a substituted or unsubstituted heterocyclic ring selected from benzoxazole, benzothiazole, benzoselenazole, naphthoxazole, naphthothiazole, naphthoselenazole, thiazole, thiazoline, oxazole, selsnazole, selsnazoline, pyridine, benzimidazole, and quinoline; R11 and R12 each represents a substituted or unsubstituted alkyl group, provided that at least one of them is substituted with an acid radical; X represents a counter ion necessary for charge balance; and n is 0 or 1. The photographic material exhibits high sensitivity and provides an image having high contrast and high density, with neither black pepper nor residual color in the non-image area.
575991
Bereskin & Parr
Fuji Photo Film Co. Ltd.
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