Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1989-11-28
1991-08-06
Le, Hoa Van
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430264, 430567, 430600, 430603, 430607, 430611, G03C 120
Patent
active
050377337
ABSTRACT:
A silver halide photosensitive material comprising a support having thereon at least one silver halide emulsion layer containing silver halide grains. These silver halide grains are obtained by subjecting the surface of silver halide grains to halogen conversion. These silver halide grains are essentially silver iodide free silver chlorobromide. They have a plurality of internal layers of different halogen compositions and contain at least one bridged pentamethine cyanine dye compound represented by the general formula (I) or (I'): ##STR1## and one compound represented by general formula (II): ##STR2## The variables in the above formulas are defined in the instant specification.
REFERENCES:
patent: 4618570 (1986-10-01), Kadowaki et al.
patent: 4849324 (1989-07-01), Aida et al.
patent: 4912029 (1990-03-01), Asami
Fuji Photo Film Co. , Ltd.
Le Hoa Van
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