Method of image formation

Details Method of image formation Method of image formation

1991-09-10

1993-08-24

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430267, 430449, 430517, 430598, G03C 106

Patent

active

052387801

ABSTRACT:
A method for forming images having a contrast of greater than G 8, comprising the step of developing an imagewise exposed silver halide photographic material with a developing solution having a pH of 11.2 or less. The silver halide photographic material comprises a support having thereon a hydrophilic colloid layer containing a redox compound which releases a development inhibitor upon oxidation and at least one photosensitive silver halide emulsion layer containing a hydrazine derivative. The at least one photosensitive silver halide emulsion layer containing a hydrazine derivative is different from the hydrophilic colloid layer containing a redox compound.

REFERENCES:
patent: 5085971 (1992-02-01), Katoh et al.
patent: 5139921 (1992-08-01), Takagi et al.

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