Silver halide photographic material and method for forming image

Details Silver halide photographic material and method for forming image Silver halide photographic material and method for forming image

1990-01-08

1991-03-05

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430438, 430464, 430481, 430566, G03C 142

Patent

active

049977431

ABSTRACT:
Silver halide photographic material and method of forming an image using the same are disclosed. The material comprises one or more silver halide emulsion layers on a support, with a hydrazine derivative and a developing agent being incorporated in at least one of said emulsion layers. The image forming method comprises performing imagewise exposure of the above-described photographic material and developing said material with a developing solution that contains sulfite ions in a concentration of not less than 0.15 mole per liter and which has a pH within the range of from 9.5 to 12.3, and provides a supercontrasty negative image that has a very contrasty photographic characteristic of a gamma (.gamma.) of 10 or more and which is not highly susceptible to the occurrence of "black spots".

REFERENCES:
patent: 4377634 (1983-03-01), Mifune et al.
patent: 4385108 (1983-05-01), Takagi et al.
patent: 4447522 (1984-05-01), Hirano et al.
patent: 4560638 (1985-12-01), Loblaw et al.

Affiliated with

Also associated with

Rating

Silver halide photographic material and method for forming image does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Silver halide photographic material and method for forming image, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silver halide photographic material and method for forming image will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-496091