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US 4,033,770 AGranted
Production of adhesive transfers by diffusion transfer
AssigneeAgfa-Gevaert
InventorsLouis Maria De Haes, Leon Louis Vermeulen, Hugo Karel Gevers, Walter Frans De Winter
Life of this patent
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Abstract
Process and material for the production and use of pressure sensitive and for heat sensitive and/or solvent sensitive decalcomanias, formed according to the principles of the silver complex diffusion transfer process.
Claims23
A process for the production of transfer images comprising the steps of:
- (1photographically exposing a photographic material carrying a light-sensitive silver halide emulsion layer;
- (2contacting the emulsion layer side of the exposed photographic material with a supported image-receiving layer of an image-receiving material, said image-receiving layer containing developing or precipitating nuclei, in the presence of a developing liquid for the exposed silver halide and a silver halide solvent to diffuse developed silver halide image-wise from the photographic material into the receiving layer to form therein a visible silver image;
- (3separating the exposed and developed photographic material from the receiving layer carrying said visible silver image;
- (4pressing said receiving layer carrying said visible image at least partly into contact with a receptor material, said image-receiving layer comprising a mixture of a hydrophilic colloid, a thermoplastc polymer latex, and at least one of a plasticizer or a tackifying resin, and being adapted to undergo an increase in sticking power upon the application of pressure and optionally with heat and/or solvents sufficient to make the pressure-receiving regions of said image-receiving layer remain adhered on the receptor material upon separation of the image-receiving material from the receptor material;
- and
- (5) separating said image-receiving material from the receptor material to leave at least a portion of the pressure-receiving regions of said image-receiving layer upon said receptor material.
3 more elements
A process for the production of transfer images comprising the steps of:
- (1photographically exposing a photographic material containing a light-sensitive silver halide emulsion layer and a releasable dye-image-forming substance;
- (2contacting the emulsion layer side of the exposed photographic material with a supported image-receiving layer of an image-receiving material, in the presence of a liquid for developing the exposed silver halide and releasing said dye-image-forming substance image-wise from the photographic material for diffusion into the receiving layer to form therein a visible dyestuff image;
- (3separating the exposed and developed photographic material from the receiving material carrying the visible dyestuff image;
- (4pressing said receiving material containing said visible dyestuff image at least partly into contact with a receptor material, said image-receiving layer comprising a mixture of a hydrophilic colloid, a thermoplastic polymer, latex and at least one of a plasticizer or a tackifying resin, and being adapted to undergo an increase in sticking power upon the application of presssure and optionally with heat and/or solvents sufficient to make the pressure-receiving regions of said image-receiving layer to remain adhered on the receptor material upon separation of the image-receiving material from the receptor material;
- and
- (5) separating said image-receiving material from the receptor material to leave at least a portion of the pressure-receiving regions of said image-receiving layer upon said receptor material.
3 more elements
Dependencies are inferred from the claim text.