GB1590957A - Sheet materials for colour photothermographic transfer processes - Google Patents
Sheet materials for colour photothermographic transfer processes Download PDFInfo
- Publication number
- GB1590957A GB1590957A GB4727876A GB4727876A GB1590957A GB 1590957 A GB1590957 A GB 1590957A GB 4727876 A GB4727876 A GB 4727876A GB 4727876 A GB4727876 A GB 4727876A GB 1590957 A GB1590957 A GB 1590957A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- receiving
- photothermographic
- composition
- dye
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 title claims description 46
- 238000000034 method Methods 0.000 title claims description 23
- 239000000203 mixture Substances 0.000 claims description 32
- 239000002243 precursor Substances 0.000 claims description 21
- 239000000126 substance Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 16
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 15
- 239000004202 carbamide Substances 0.000 claims description 11
- 229920001223 polyethylene glycol Polymers 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 11
- 239000002202 Polyethylene glycol Substances 0.000 claims description 10
- 238000009792 diffusion process Methods 0.000 claims description 10
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 9
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 9
- 239000001856 Ethyl cellulose Substances 0.000 claims description 7
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 7
- 235000013871 bee wax Nutrition 0.000 claims description 7
- 239000012166 beeswax Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229920001249 ethyl cellulose Polymers 0.000 claims description 7
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 7
- 239000001993 wax Substances 0.000 claims description 7
- FLYFLESWJKLOMD-UHFFFAOYSA-N henicosane-1,2,3-triol Chemical compound CCCCCCCCCCCCCCCCCCC(O)C(O)CO FLYFLESWJKLOMD-UHFFFAOYSA-N 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 claims description 6
- 235000021355 Stearic acid Nutrition 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 229940037312 stearamide Drugs 0.000 claims description 5
- 239000008117 stearic acid Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 claims description 2
- 108010010803 Gelatin Proteins 0.000 claims description 2
- 239000004677 Nylon Substances 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 229920006097 Ultramide® Polymers 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- PFBODVVRAXRVHJ-UHFFFAOYSA-M benzyl-ethenyl-methyl-(2-phenylethyl)azanium;chloride Chemical compound [Cl-].C=1C=CC=CC=1C[N+](C=C)(C)CCC1=CC=CC=C1 PFBODVVRAXRVHJ-UHFFFAOYSA-M 0.000 claims description 2
- 125000002091 cationic group Chemical group 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 2
- 229920000159 gelatin Polymers 0.000 claims description 2
- 239000008273 gelatin Substances 0.000 claims description 2
- 235000019322 gelatine Nutrition 0.000 claims description 2
- 235000011852 gelatine desserts Nutrition 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- KZJPVUDYAMEDRM-UHFFFAOYSA-M silver;2,2,2-trifluoroacetate Chemical compound [Ag+].[O-]C(=O)C(F)(F)F KZJPVUDYAMEDRM-UHFFFAOYSA-M 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000000975 dye Substances 0.000 description 29
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- DFPAKSUCGFBDDF-UHFFFAOYSA-N Nicotinamide Chemical compound NC(=O)C1=CC=CN=C1 DFPAKSUCGFBDDF-UHFFFAOYSA-N 0.000 description 2
- 239000000987 azo dye Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- ORWQBKPSGDRPPA-UHFFFAOYSA-N 3-[2-[ethyl(methyl)amino]ethyl]-1h-indol-4-ol Chemical compound C1=CC(O)=C2C(CCN(C)CC)=CNC2=C1 ORWQBKPSGDRPPA-UHFFFAOYSA-N 0.000 description 1
- MGJKQDOBUOMPEZ-UHFFFAOYSA-N N,N'-dimethylurea Chemical compound CNC(=O)NC MGJKQDOBUOMPEZ-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229960003966 nicotinamide Drugs 0.000 description 1
- 235000005152 nicotinamide Nutrition 0.000 description 1
- 239000011570 nicotinamide Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- CMCWWLVWPDLCRM-UHFFFAOYSA-N phenidone Chemical compound N1C(=O)CCN1C1=CC=CC=C1 CMCWWLVWPDLCRM-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 description 1
- 229910001488 sodium perchlorate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
- G03C8/40—Development by heat ; Photo-thermographic processes
- G03C8/4013—Development by heat ; Photo-thermographic processes using photothermographic silver salt systems, e.g. dry silver
- G03C8/4046—Non-photosensitive layers
- G03C8/406—Covering or backing layers
Description
(54) SHEET MATERIALS FOR COLOUR
PHOTOTHERMOGRAPHIC TRANSFER PROCESSES
(71) We, KODAK LIMITED, a Company registered under the law of
England, of Kodak House, Station Road, Hemel Hempstead, Hertfordshire, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to sheet materials for photothermographic transfer processes.
In a photothermographic transfer process, an imagewise distribution of an imageproviding substance is produced by exposing and uniformly heating an appropriate sensitive sheet material and transfers by diffusion to a receiving layer. The image providing substance may be an image dye or it may be a precursor of the image dye which is caused to give the image dye by a chemical reaction which takes place in the receiving layer. The present invention is concerned with a process of this kind where the receiving layer is part of a separate sheet material and the diffusion transfer is effected by maintaining the sensitive and receiving sheet materials in face to face contact at an elevated temperature.
In the present invention the diffusion transfer is facilitated by providing between the sensitive and receiving layers a layer of a composition comprising a substance which is molten at the transfer temperature and allows the two sheet materials to be peeled apart at ambient temperatures after transfer has been effected. The diffusionaiding layer may be provided by overcoating the sensitive material, the receiving layer, or both, with the chosen composition. Accordingly there are provided in accordance with the invention a sensitive photothermographic material comprising a composition which on imagewise exposure to light and overall heating produces an imagewise distribution of a diffusable image dye (or dye precursor) and a diffusion-aiding overcoat layer, a mordant-containing receiving material comprising such a layer, and methods of forming images in which either or both such materials are used.
A wide range of meltable substances are suitable for use in the method of the invention, the main criteria in selection being that the substance should be substantially inert with respect to the sensitive and receiving layers and should differ in polarity from the binder of at least one of the layers to be peeled apart following diffusion transfer. Substances of intermediate polarity, such as dimethylurea and nicotinamide tend to bond the sensitive and receiving layers together, possibly through diffusing into and softening their surfaces.
Examples of suitable meltable substances are natural waxes, e.g. beeswax, synthetic polymers, such as polyethylene glycols, and simple organic compounds such as urea, stearic acid, acetylated stearyl glycerol, stearamide, and esters of fatty acids.
A meltable composition for the method of the invention may contain more than one substance. A mixture of a natural wax and ethyl cellulose is very satisfactory. Mix- tures of this kind are described in Chapter 3 of 'Industrial Waxes', Volume 2, H.
Bennett, Chemical Publishing Co. Inc., New York, 1963.
The coverage of meltable substance in a diffusion-aiding layer of the invention is not critical, convenient values being in the range 0.5 to 10 grams per square metre.
In forming an image by a method of the invention, a sensitive photothermographic material is exposed imagewise to light and heated to produce an imagewise distribution of a diffusible image dye or diffusable image dye precursor and the material is heated in contact with a receiving material, the sensitive material and/or the receiving material being coated with a layer of a composition which comprises a substance which is molten at a temperature at which the dye or dye precursor can transfer by diffusion to the receiving material, whereby the imagewise distribution of dye or dye precursor is caused to transfer to the receiving material. The production of the imagewise distribution of dye or dye precursor and the transfer of that distribution to the receiving material may take place during a single heating step or may be brought about in separate stages in which different heating temperatures may be employed. During the first stage the exposed sensitive layer need not be in contact with the receiving material.
Such a two-stage procedure may be desirable, for example, if prolonged heating at the temperature required to form the imagewise distribution of dye or dye precursor tends to form fog, and diffusion transfer can be effected at a lower temperature.
The method of the invention may be used for the process described and claimed in United Kingdom Patent Application 47277/76 (Serial No. 1,590,956). In one embodiment of that process, a latent image is produced by exposing a layer containing a photographic silver halide, a non-diffusible silver salt of a diffusible dye (or dye precursor), a reducing agent and a binder imagewise to light, and the layer is uniformly heated in contact with a receiving layer carried by a separate support, whereupon the reducing agent reacts with the silver salt in the latent image areas to produce an imagewise distribution of the diffusible dye or dye precursor which diffuses to the receiving layer. If the transferred substance is a dye precursor, the corresponding dye is formed therefrom either by reaction with one or more substances incorporated in the receiving layer for the purpose, or by treating the receiving layer with the necessary reagent. The receiving layer is preferably a mordant layer for the image dye and is preferably formed by coating a support with a layer of a mixture of a polymeric binder and a mordant, or a layer of a polymeric mordant.
The invention is illustrated by the following Examples.
Example 1.
A dispersion (i) was prepared by ball-milling for 18 hours the following:
Silver dye salt 0.4 g
Polyvinyl butyral 0.4 g
Dichloromethane 40 ml
The silver dye salt was the silver salt of the azo dye N-(benzotriazol-5-yl)-4-(1- hydroxy-4-methoxynaphth- 2-ylazo benzamide:
The azo dye was prepared as described in United Kingdom Patent Application No.
47276/76 (Serial No. 1,590,955) concerned with sensitizing dyes, being identified therein as Compound XVIII. The silver salt was prepared by dissolving the dye (4.38 g) in dimethylformamide (120 ml) containing aqueous ammonia (24 ml., S.G.
0.88) and adding, with stirring, to the solution so obtained a solution of silver nitrate (1.70 g) in a mixture of dimethylformamide (20 ml), water (4 ml) and aqueous ammonia (4 ml, S.G. 0.88). Water (120 ml) was dripped into the mixture over a period of 30 mins and the resulting silver salt (5.7 g) was filtered off and washed successively with very dilute aqueous ammonia, water, and methanol.
The polyvinyl butyral used in all the compositions described in the Examples was 'Butvar' B76 marketed by Monsanto Chemicals Ltd. ('Butvar' is a trade mark).
A solution (ii) was made up as follows:
polyvinyl butyral 2.1 g 1 phenyl-3-pyrazolidone 0.65 g
triphenylphosphate 0.7 g
acetylated stearylglycerol 0.7 g
sodium perchlorate 0.09 g
methanol 5 ml
dichloromethane 115 ml
poly(dimethylsiloxane) 0.012 g
A photographic silver bromide dispersion (iii) was made by mixing acetone solutions of silver trifluoracetate and lithium bromide in the presence of polyvinyl butyral (see 'Research Disclosure' September 1974, Item No. 12537). The grains were approximately cubic in shape and had an average edge length of 80 nm. The dispersion contained 0.37 mole of silver bromide and 33 grams of polyvinyl butyral per kilogram.
Coatings were prepared by coating portions of composition of the following formula:
silver dye salt dispersion (i) 1.5 ml
solution (ii) 8 ml
silver bromide dispersion (iii) 0.3 ml at a wet thickness of approximately 0.1 mm on a polyester photographic film support and drying.
The sample coatings were exposed through a pattern of opaque bars to an electronic flash unit and were held for 20 seconds in firm contact with receiving sheets on a curved metal block maintained at 120"C. Two kinds of receiving sheet A and
B were used and each of these was tested both unsupercoated and supercoated.
A. A layer of gelatin containing the cationic polymeric mordant copoly[styrene- (N-vinylbenzyl-N-benzyl-N,N-dimethylammonium chloride)] coated on polyethylene coated paper.
B. Soluble nylon ('Ultramid 6A'-trade mark-supplied by B.A.S.F.) coated from a solution in ethanol-water (80--20 by volume) of pH 7 on paper.
The supercoat composition, applied at a wet-thickness of 0.10 mm, was:
ethyl cellulose 2g beeswax 3g 1,1, 1-trichloroethane 100 ml
poly(dimethylsiloxane) 0.006 g
The following results were obtained. The unsupercoated receiving layer A adhered to the photothermographic layer so that when the layers were torn apart a patchy brown on brown image was revealed. The corresponding supercoated receiving layer separated cleanly from the photothermographic layer to reveal a clean, continuous tone magenta image on a very pale magenta background. Except that the unsupercoated receiving layer did not adhere all over to the photothermographic layer, similar results were obtained for receiving layer B.
Example 2.
Receiving sheets of type A, Example 1, were wetted with water, with 20% w/v aqueous urea solution or with 20% w/v aqueous solution of polyethylene glycol, average molecular weight 4000, and then dried. When dry the urea and polyethylene glycol treated sheets had films of solid on the surface, which films melted during use of the sheets as described below.
Strips of photothermographic material prepared and exposed as described in
Example 1 were held for 5 seconds in firm contact with strips of the unsupercoated and supercoated receiving sheets on a curved metal block maintained at 140"C. The unsupercoated receiver adhered to the photothermographic layer and on separation of the strips a patchy brown on brown image was revealed. The urea and polyethylene glycol treated strips peeled cleanly from the photothermographic layer revealing magenta images on pale magenta background areas.
WHAT WE CLAIM IS:- 1. A method of facilitating the transfer by diffusion at an elevated temperature of an imagewise distribution of dye or dye precursor from a sensitive photothermographic material in which said distribution is formed by exposure and uniform heating to a receiving material, which comprises overcoating the photothermographic and/or the receiving material with a layer of a composition which comprises a substance which is melted on heating to the transfer temperature and allows the photothermographic and receiving materials to be peeled apart at ambient temperatures after transfer has been effected.
2. A method according to Claim 1 wherein the composition which is coated over the photothermographic and/or receiving material comprises urea, stearic acid, stearamide, acetylated stearyl glycerol, a polyethylene glycol, beeswax or a mixture of a natural wax and ethyl cellulose.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (9)
1. A method of facilitating the transfer by diffusion at an elevated temperature of an imagewise distribution of dye or dye precursor from a sensitive photothermographic material in which said distribution is formed by exposure and uniform heating to a receiving material, which comprises overcoating the photothermographic and/or the receiving material with a layer of a composition which comprises a substance which is melted on heating to the transfer temperature and allows the photothermographic and receiving materials to be peeled apart at ambient temperatures after transfer has been effected.
2. A method according to Claim 1 wherein the composition which is coated over the photothermographic and/or receiving material comprises urea, stearic acid, stearamide, acetylated stearyl glycerol, a polyethylene glycol, beeswax or a mixture of a natural wax and ethyl cellulose.
3. A sensitive photothermographic material suitable for a method according to
Claim 1 which comprises a support and, incorporated in a layer or layers coated on one side thereof, a sensitive composition which on imagewise exposure to light and overall heating produces an imagewise distribution of a diffusible image dye or a diffusible image dye precursor, and, coated over said layer or layers, a layer of a composition which comprises a substance which is molten at a temperature at which the image dye or image dye precursor will diffuse.
4. A material according to Claim 3 wherein the composition which is coated over the said layer or layers comprises urea, stearic acid, stearamide, acetylated stearyl glycerol, a polyethylene glycol, beeswax or a mixture of a natural wax and ethyl cellulose.
5. A non-light-sensitive receiving material suitable for a method according to
Claim 1 which comprises a support coated with a receiving layer which contains a mordant and is overcoated with a layer of a composition which comprises a substance which is molten at a temperature at which an image dye or image dye precursor can be caused to diffuse to the receiving layer.
6. A material according to Claim 5 wherein the composition coated over the receiving layer comprises urea, stearic acid, stearamide, acetylated stearyl glycerol, a polyethylene glycol, beeswax, or a mixture of a natural wax and ethyl cellulose.
7. A method of forming an image which comprises imagewise exposing to light a sensitive photothermographic material according to Claim 3 or 4, heating the exposed material overall to produce an imagewise distribution of a diffusible image dye or a diffusible image dye precursor, and heating the material in contact with a receiving material whereby the composition coated over the layer or layers containing the sensitive composition is kept molten and the imagewise distribution of image dye or image dye precursor is caused to transfer by diffusion to the receiving material.
8. A method of forming an image which comprises imagewise exposing to light a sensitive photographic material which comprises a support and, incorporated in a layer or layers coated on one side thereof, a sensitive composition which on such exposure and overall heating produces an imagewise distribution of a diffusible image dye or a diffusible image dye precursor, heating the material to produce such a distribution of dye or dye precursor, and heating the material in contact with a receiving material according to Claim 5 or 6 whereby the composition coated over the receiving layer is kept molten and the imagewise distribution of dye or dye precursor is caused to transfer by diffusion to the receiving layer.
9. A method according to Claim 7 or 8 wherein the imagewise distribution of diffusible image dye or diffusible image dye precursor is produced and caused to transfer to the receiving material during a single heating step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4727876A GB1590957A (en) | 1977-11-14 | 1977-11-14 | Sheet materials for colour photothermographic transfer processes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4727876A GB1590957A (en) | 1977-11-14 | 1977-11-14 | Sheet materials for colour photothermographic transfer processes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1590957A true GB1590957A (en) | 1981-06-10 |
Family
ID=10444385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4727876A Expired GB1590957A (en) | 1977-11-14 | 1977-11-14 | Sheet materials for colour photothermographic transfer processes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1590957A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0109537A2 (en) * | 1982-10-25 | 1984-05-30 | Fuji Photo Film Co., Ltd. | Apparatus for thermal developing and transferring |
| US4704344A (en) * | 1983-12-05 | 1987-11-03 | Fuji Photo Film Co., Ltd. | Heat developable light-sensitive material with protective layer |
| EP0336688A2 (en) * | 1988-04-04 | 1989-10-11 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Photothermographic element and process |
-
1977
- 1977-11-14 GB GB4727876A patent/GB1590957A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0109537A2 (en) * | 1982-10-25 | 1984-05-30 | Fuji Photo Film Co., Ltd. | Apparatus for thermal developing and transferring |
| EP0109537A3 (en) * | 1982-10-25 | 1985-07-03 | Fuji Photo Film Co., Ltd. | Method and apparatus for thermal developing and transferring |
| US4704344A (en) * | 1983-12-05 | 1987-11-03 | Fuji Photo Film Co., Ltd. | Heat developable light-sensitive material with protective layer |
| EP0336688A2 (en) * | 1988-04-04 | 1989-10-11 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Photothermographic element and process |
| EP0336688A3 (en) * | 1988-04-04 | 1991-01-02 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Photothermographic element and process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |