Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Patent
1991-02-19
1993-07-20
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...
430203, 430213, 430214, 430215, 430216, 430639, 430640, 430935, 430212, G03C 554, G03C 104
Patent
active
052292460
ABSTRACT:
A diffusion transfer photographic material is disclosed, which comprises a support having thereon at least a photosensitive element comprising a photosensitive silver halide emulsion and a diffusible dye donating compound, and a dye fixing element which is placed upon the said photosensitive element at the time of image transfer, wherein a natural macromolecular polysaccharide originating from red algae is included in said photosensitive element and/or in said dye fixing element, and a process of producing a diffusion transfer photographic material is disclosed, which comprises the step of using a coating liquid which contains a water soluble polymer solution comprising a natural macromolecular polysaccharide, a hydrophilic organic solvent in which the said water soluble polymer is essentially insoluble and water.
REFERENCES:
patent: 3250620 (1966-05-01), Lovett et al.
patent: 4569900 (1986-02-01), Takagi
patent: 4820622 (1989-04-01), Hirai
patent: 5051349 (1991-09-01), Taguchi et al.
Shibata Takeshi
Yokokawa Takuya
Fuji Photo Film Co. , Ltd.
Schilling Richard L.
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