Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product
Patent
1990-05-11
1991-09-24
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Silver halide colloid tanning process, composition, or product
430265, 430434, 430564, 430600, 430603, 430611, 430613, G03C 128, G03C 110, G03C 134, G03C 529
Patent
active
050513362
ABSTRACT:
A negative type silver halide photographic material is disclosed. The material comprises a support having provided thereon at least one silver halide emulsion layer containing silver halide grains sensitized with gold and sulfur sensitizers, the emulsion layer or at least one other hydrophilic colloid layer containing at least one high contrast-imparting hydrazine derivative and at least one compound represented by the following general formula (I): ##STR1## wherein Z represents N or C--X wherein X represents a substituted or unsubstituted alkyl or aryl group, Y represents a substituted or unsubstituted alkyl or aryl group, and M represents a hydrogen atom, a metallic atom, or ammonium which may be substituted.
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patent: 4681836 (1987-07-01), Inoue et al.
patent: 4705738 (1987-11-01), Balestru
patent: 4737442 (1988-04-01), Yagihara et al.
Inoue Nobuaki
Sasaoka Senzo
Yoshida Tetsuo
Bowers Jr. Charles L.
Fuji Photo Film Co. , Ltd.
Wright Lee C.
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