Photographic element for color diffusion transfer process

Details Photographic element for color diffusion transfer process Photographic element for color diffusion transfer process

1979-04-19

1981-05-19

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

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

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

428500, 428515, 428520, 428521, 428522, 430404, 430463, 430644, G03C 140, G03C 554, B32B 2708, B32B 2700

Patent

active

042686040

ABSTRACT:
In a photographic element for the color diffusion transfer process including a neutralizing system for reducing the pH of an aqueous alkaline developing solution which comprises a neutralizing layer and a timing layer wherein the timing layer is positioned on or under the neutralizing layer in direct or indirect contact therewith such that the aqueous alkaline developing solution reaches the neutralizing layer through the timing layer, the improvement which comprises said timing layer comprising a mixture of at least one polymer latex the minimum film forming temperature of which is 35.degree. C. or less (Group I) and at least one polymer latex the minimum film forming temperature of which is more than 35.degree. C. (Group II), each polymer latex being produced by emulsion polymerization of each of at least one monomer selected from the group consisting of monomers of Group (A) described below and at least one monomer selected from the group consisting of monomers of Group (B) described below, or each of at least one monomer selected from the group consisting of monomers of Group (A) described below, at least one monomer selected from the group consisting of monomers of Group (B) described below and at least one monomer selected from the group consisting of monomers of Group (C) described below:

REFERENCES:
patent: 4056394 (1977-11-01), Hannie
patent: 4061496 (1977-12-01), Hannie et al.

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