Diffusion transfer photographic elements

Details Diffusion transfer photographic elements Diffusion transfer photographic elements

Filed on

1990-06-26

Date issued

1991-12-24

Examiner

Schilling, Richard L.

Patent Class

Radiation imagery chemistry: process, composition, or product th

SubClass

Transfer procedure between image and image layer, image...

SubSubClass

Diffusion transfer process, element, or identified image...

Other Related Categories

430216, 430941, 430214, G03L 554

Type

Patent

Status

active

Patent number

050751972

Description

ABSTRACT:
A diffusion transfer photographic element wherein there is included at least one layer which contains a water based polymer dispersion obtained by adding at least one ethylenic unsaturated monomer which contains a sulfinic acid group to a polymer dispersion which contains repeating units which have at least one quaternary ammonium salt and carrying out a polymerization.

REFERENCES:
patent: 4358534 (1982-11-01), Sasaki et al.
patent: 4511643 (1985-04-01), Toya
patent: 4547452 (1985-10-01), Toya
patent: 4636455 (1987-01-01), Aono et al.
patent: 4957848 (1990-09-01), Takahashi et al.

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