Process for forming an amplified dye image

Details Process for forming an amplified dye image Process for forming an amplified dye image

Filed on

1976-10-01

Date issued

1980-03-11

Examiner

Kelley, Mary F.

Patent Class

Radiation imagery chemistry: process, composition, or product th

SubClass

Color imaging process

SubSubClass

Intensifying

Other Related Categories

G03C 532, G03C 700

Type

Patent

Status

active

Patent number

041926811

Description

ABSTRACT:
An improved process for forming an amplified dye image on an image-wise, exposed light-sensitive silver halide photographic material is described, which, after developing, is processed with an amplifying solution the improvement being in that (a) the coupler is in stoichiometric excess of at least 50% relative to the amount of silver halide, (b) the dry thickness ratio of the hydrophilic colloid layer to the silver halide emulsion layer is 1 to 10 and (c) the amplifying solution contains hydrogen peroxide.

REFERENCES:
patent: 3411904 (1968-11-01), Becker
patent: 3822129 (1974-07-01), Dunn et al.
patent: 3841873 (1974-10-01), Mowrey et al.
patent: 4062684 (1977-12-01), Hara et al.

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