Patent US4439294A successfully refreshed from Google Patents.
US4033770A
Expired / Lapsed
US
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Production of adhesive transfers by diffusion transfer
Assignee: Agfa Gevaert NV
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Filing: 1975-04-04
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Granted: 1977-07-05
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Expires: 1995-04-04
Abstract
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.
Inventors
- 👤 Louis Maria De Haes
- 👤 Leon Louis Vermeulen
- 👤 Hugo Karel Gevers
- 👤 Walter Frans De Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:40
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/24; G03C8/26; G03C11/00; G03C11/12; Y; Y10; Y10S; Y10S428/00; Y10S428/914
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
222 words
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.
Claim 2
Dependent Claim
222 words
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.
Claim 3
Dependent Claim
41 words
A process according to claim 1 wherein said pressure is applied at room temperature and with a magnitude at least 3 times as high as the pressure applied in the contacting step between the exposed photographic material and the image-receiving material.
Claim 4
Dependent Claim
14 words
A process according to claim 2, wherein the image-receiving layer is a water-permeable layer.
Claim 5
Dependent Claim
55 words
A process according to claim 3, wherein said thermoplastic polymer is of the group consisting of: polymers of styrene and its homologues, acrylic acid esters, methacrylic acid esters, vinyl halides, vinyl ethers, vinyl esters, vinyl acetals and vinyl alcohol, cellulose esters and ethers, polycarbonates, natural unvulcanised rubber, vulcanised rubber, rubber hydrochloride, polyisobutylene, polychloroprene, and polybutadiene.
Claim 6
Dependent Claim
29 words
A process according to claim 1, wherein said plasticizer is dimethyl phthalate, diethyl phthalate, dipropylene glycol dibenzoate, dibutoxyethyl phthalate, triacetin, butylbenzyl phthalate, methyl phthalyl ethyl glycolate or tricresyl phosphate.
Claim 7
Dependent Claim
35 words
A process according to claim 4, wherein the image-receiving layer contains as said tackifying resin rosin or a rosin derivative, a liquid polymeric styrene or homologue, polymerized pinene, ketone resin, or low molecular weight polyisobutylene.
Claim 8
Dependent Claim
47 words
A process according to claim 4, wherein the image-receiving layer contains as an additional tack-controlling agent a long-chain hydrocarbon of at least 12 carbon atoms, a fatty acid or a derivative thereof, a polyethylene glycol, a polypropylene glycol or a fatty alcohol ester of a polyethylene glycol.
Claim 9
Dependent Claim
12 words
A process according to claim 1, wherein the image-receiving layer contains gelatin.
Claim 10
Dependent Claim
14 words
A process according to claim 1, wherein the image-receiving layer contains a wetting agent.
Claim 11
Dependent Claim
21 words
A process according to claim 1, wherein the image-receiving layer contains a toner to obtain a silver image with neutral tint.
Claim 12
Dependent Claim
17 words
A process according to claim 1, wherein the support of the image-receiving material is translucent or transparent.
Claim 13
Dependent Claim
20 words
A process according to claim 1, wherein the emulsion layer of the photographic material contains silver chloride or silver chlorobromide.
Claim 14
Dependent Claim
46 words
A process according to claim 1, wherein the liquid is an alkaline aqueous liquid containing an alkali metal or ammonium thiosulphate, and a developing agent for exposed silver halide is contained in said liquid or introduced therein from the photographic material and/or image-receiving material during contacting.
Claim 15
Dependent Claim
37 words
A process according to claim 1, wherein the pressing is effected by rubbing a pointed member in close strokes against the rear-side of the image-receiving material while having the image-receiving layer in contact with the receptor material.
Claim 16
Dependent Claim
218 words
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.
Claim 17
Dependent Claim
218 words
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.
Claim 18
Dependent Claim
41 words
A process according to claim 15, wherein said pressure is applied at room temperature and with a magnitude at least 3 times as high as the pressure applied in the contacting step between the exposed photographic material and the image-receiving material.
Claim 19
Dependent Claim
14 words
A process according to claim 16, wherein the image-receiving layer is a water-permeable layer.
Claim 20
Dependent Claim
55 words
A process according to claim 15, wherein said thermosplastic polymer is of the group consisting of polymers of styrene and its homologues, acrylic acid esters, methacrylic acid esters, vinyl halides, vinyl ethers, vinyl esters, vinyl acetals and vinyl alcohol, cellulose esters and ethers, polycarbonates, natural unvulcanised rubber, vulcanised rubber, rubber hydrochloride, polyisobutylene, polychloroprene, and polybutadiene.
Claim 21
Dependent Claim
29 words
A process according to claim 15, wherein said plasticizer is dimethyl phthalate, diethyl phthalate, dipropylene glycol dibenzoate, dibutoxyethyl phthalate, triacetin, butylbenzyl phthalate, methyl phthalyl ethyl glycolate or tricresyl phosphate.
Claim 22
Dependent Claim
35 words
A process according to claim 18, wherein the image-receiving layer contains as said tackifying resin rosin or a rosin derivative, a liquid polymeric styrene or homologue, polymerized pinene, ketone resin, or low molecular weight polyisobutylene.
Claim 23
Dependent Claim
47 words
A process according to claim 18, wherein the image-receiving layer contains as an additional tack-controlling agent a long-chain hydrocarbon of at least 12 carbon atoms, a fatty acid or a derivative thereof, a polyethylene glycol, a polypropylene glycol or a fatty alcohol ester of a polyethylene glycol.
Claim 24
Dependent Claim
12 words
A process according to claim 15, wherein the image-receiving layer contains gelatin.
Claim 25
Dependent Claim
37 words
A process according to claim 15, wherein the pressing is effected by rubbing a pointed member in close strokes against the rear-side of the image-receiving material while having the image-receiving layer in contact with the receptor material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |