High-contrast photographic element

Details High-contrast photographic element High-contrast photographic element

1989-01-23

1990-02-27

Le, Hoa V.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430510, 430513, 430515, 430517, G03C 106

Patent

active

049045652

ABSTRACT:
A high-contrast photographic element is disclosed comprising a support having thereon in order, a layer comprising a filter dye (A), at least one silver halide emulsion layer having a gamma of at least 10, and a layer comprising a filter dye (B), which is the same as or different from dye (A), wherein filter dyes (A) and (B) absorb light in the region of the spectrum to which the silver halide emulsion layer is sensitive.

REFERENCES:
patent: 4200464 (1980-04-01), Shishido et al.
patent: 4574115 (1986-03-01), Adachi et al.
patent: 4803149 (1989-02-01), Takabashi et al.

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