G - Physics – 03 – C
Patent
G - Physics
03
C
96/116
G03C 1/14 (2006.01) G03C 1/29 (2006.01)
Patent
CA 1086546
ABSTRACT OF THE DISCLOSURE A silver halide photographic emulsion is provided which contains in combination at least one sensitizing dye of formula (I) and at least one sensitizing dye of formula (II): Image (I) wherein Z1 represents a methyl or ethyl group, R1 and R2 each represent an alkyl or sulfoalkyl group, X1? represents acid anions, and n represents an integer of 1 or 2, but n is 1 when the sensitizing dye forms an intramolecular salt, Image (II) wherein Z2 represents a lower alkyl group, W1 and W2 each represent a hydrogen or halogen atom or an alkyl group, W3 and W4 each represent a hydrogen or halogen atom or an alkyl, alkoxy, hydroxy or phenyl group, where W3 and W4 may be joined to form a benzene ring, but at least one of said W1, W2, W3 and W4 is a halogen atom, R3 and R4 each represent an alkyl, sulfoalkyl or carboxyalkyl group, X2? represents acid anions, and m represents an integer of 1 or 2, but m is 1 when the sensitizing dye forms an intramolecular salt.
259022
Itoh Shigemasa
Obikawa Tadahiko
Konishiroku Photo Industry Co. Ltd.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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