Photographic reversal process

Details Photographic reversal process Photographic reversal process

1978-04-25

1980-01-22

Kelley, Mary F.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Positive

430379, 430410, 430449, G03C 550, G03C 716

Patent

active

041848756

ABSTRACT:
Positive images including color images are obtained by a photographic reversal process by imagewise exposure of a material which comprises at least one light-sensitive silver halide emulsion layer, black and white development, fogging and color development characterized in that the fogging is carried out in the presence of a compound of the formula ##STR1## wherein the symbols are defined as hereinafter.

REFERENCES:
patent: 2495000 (1950-01-01), Hanford
patent: 2498418 (1950-02-01), Hanford
patent: 3186840 (1965-06-01), Puschel et al.
patent: 3565620 (1971-02-01), Willems et al.
patent: 3576633 (1971-04-01), Henn et al.
patent: 3597199 (1971-08-01), Glockner et al.
patent: 3640717 (1972-02-01), Gallet et al.
patent: 3809563 (1974-05-01), Nimura et al.

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