Silver halide photographic material comprising two kinds of mono

Details Silver halide photographic material comprising two kinds of mono Silver halide photographic material comprising two kinds of mono

1987-10-26

1988-11-22

Shah, Mukund J.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430264, 430267, 430567, 430598, 430948, G03C 106, G03C 102

Patent

active

047865873

ABSTRACT:
A silver halide photographic material comprising at least one negative type silver halide emulsion layer coated on a support, said emulsion comprising two kinds of monodisperse emulsions each having a means grain sizes of not more than 0.5 micron and, differing in mean grain size from each other at least by 0.1 micron, and said photographic material further comprising a hydrazine derivative in at least one photographic layer, whereby negative images of high density and very high contrast can be obtained with a high photographic speed and without black spots.

REFERENCES:
patent: 4166742 (1979-09-01), Mifune et al.
patent: 4168977 (1979-09-01), Takada et al.
patent: 4221857 (1980-09-01), Okutsu et al.
patent: 4224401 (1980-09-01), Takada et al.
patent: 4269929 (1981-05-01), Nothnagle
patent: 4272606 (1981-06-01), Mifune et al.
patent: 4311781 (1982-01-01), Mifune et al.
patent: 4385108 (1983-05-01), Takagi et al.

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