US3765892A - Viscous developer for silver halid diffusion transfer processes - Google Patents
Viscous developer for silver halid diffusion transfer processes Download PDFInfo
- Publication number
- US3765892A US3765892A US00172596A US3765892DA US3765892A US 3765892 A US3765892 A US 3765892A US 00172596 A US00172596 A US 00172596A US 3765892D A US3765892D A US 3765892DA US 3765892 A US3765892 A US 3765892A
- Authority
- US
- United States
- Prior art keywords
- developer
- group
- sodium
- agent
- silver halide
- 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 - Lifetime
Links
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 27
- 239000004332 silver Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 22
- 238000009792 diffusion process Methods 0.000 title claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- -1 silver halide Chemical class 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 239000003513 alkali Substances 0.000 claims abstract description 9
- 239000002562 thickening agent Substances 0.000 claims abstract description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 15
- VJIDDJAKLVOBSE-UHFFFAOYSA-N 2-ethylbenzene-1,4-diol Chemical compound CCC1=CC(O)=CC=C1O VJIDDJAKLVOBSE-UHFFFAOYSA-N 0.000 claims description 10
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical group [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 10
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 8
- 229920002678 cellulose Polymers 0.000 claims description 7
- 239000001913 cellulose Substances 0.000 claims description 7
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 6
- 235000006708 antioxidants Nutrition 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 6
- HIGSPBFIOSHWQG-UHFFFAOYSA-N 2-Isopropyl-1,4-benzenediol Chemical compound CC(C)C1=CC(O)=CC=C1O HIGSPBFIOSHWQG-UHFFFAOYSA-N 0.000 claims description 5
- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 4
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 4
- 229920000609 methyl cellulose Polymers 0.000 claims description 4
- 239000001923 methylcellulose Substances 0.000 claims description 4
- 235000010981 methylcellulose Nutrition 0.000 claims description 4
- ZNNZYHKDIALBAK-UHFFFAOYSA-M potassium thiocyanate Chemical compound [K+].[S-]C#N ZNNZYHKDIALBAK-UHFFFAOYSA-M 0.000 claims description 4
- 229940116357 potassium thiocyanate Drugs 0.000 claims description 4
- 235000010265 sodium sulphite Nutrition 0.000 claims description 4
- XRCRJFOGPCJKPF-UHFFFAOYSA-N 2-butylbenzene-1,4-diol Chemical compound CCCCC1=CC(O)=CC=C1O XRCRJFOGPCJKPF-UHFFFAOYSA-N 0.000 claims description 3
- XPAZGLFMMUODDK-UHFFFAOYSA-N 6-nitro-1h-benzimidazole Chemical compound [O-][N+](=O)C1=CC=C2N=CNC2=C1 XPAZGLFMMUODDK-UHFFFAOYSA-N 0.000 claims description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims description 3
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 3
- 235000010323 ascorbic acid Nutrition 0.000 claims description 3
- 229960005070 ascorbic acid Drugs 0.000 claims description 3
- 239000011668 ascorbic acid Substances 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 claims description 3
- 229940077386 sodium benzenesulfonate Drugs 0.000 claims description 3
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 3
- MZSDGDXXBZSFTG-UHFFFAOYSA-M sodium;benzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=CC=C1 MZSDGDXXBZSFTG-UHFFFAOYSA-M 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 2
- HWGNBUXHKFFFIH-UHFFFAOYSA-I pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O HWGNBUXHKFFFIH-UHFFFAOYSA-I 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- HAZWCMNVIZXJNK-UHFFFAOYSA-N 4-[(4-phenyl-3H-1,2,4-triazol-2-yl)methyl]morpholine Chemical compound O1CCN(CC1)CN1CN(C=N1)C1=CC=CC=C1 HAZWCMNVIZXJNK-UHFFFAOYSA-N 0.000 claims 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 abstract description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 abstract description 4
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 38
- 239000010410 layer Substances 0.000 description 11
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N 1,4-Benzenediol Natural products OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- CNHDIAIOKMXOLK-UHFFFAOYSA-N toluquinol Chemical compound CC1=CC(O)=CC=C1O CNHDIAIOKMXOLK-UHFFFAOYSA-N 0.000 description 6
- 150000005208 1,4-dihydroxybenzenes Chemical class 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- SNTWKPAKVQFCCF-UHFFFAOYSA-N 2,3-dihydro-1h-triazole Chemical compound N1NC=CN1 SNTWKPAKVQFCCF-UHFFFAOYSA-N 0.000 description 3
- NJRNUAVVFBHIPT-UHFFFAOYSA-N 2-propylbenzene-1,4-diol Chemical compound CCCC1=CC(O)=CC=C1O NJRNUAVVFBHIPT-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- NWVVVBRKAWDGAB-UHFFFAOYSA-N hydroquinone methyl ether Natural products COC1=CC=C(O)C=C1 NWVVVBRKAWDGAB-UHFFFAOYSA-N 0.000 description 3
- 235000010724 Wisteria floribunda Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- BHZRJJOHZFYXTO-UHFFFAOYSA-L potassium sulfite Chemical compound [K+].[K+].[O-]S([O-])=O BHZRJJOHZFYXTO-UHFFFAOYSA-L 0.000 description 2
- 235000019252 potassium sulphite Nutrition 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 229920001174 Diethylhydroxylamine Polymers 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- DTEOMCPEBUHOLA-UHFFFAOYSA-K S(=O)([O-])[O-].[Na+].[OH-].[Na+].S(=S)(=O)(O)O.[Na+] Chemical compound S(=O)([O-])[O-].[Na+].[OH-].[Na+].S(=S)(=O)(O)O.[Na+] DTEOMCPEBUHOLA-UHFFFAOYSA-K 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 229910001864 baryta Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229920003123 carboxymethyl cellulose sodium Polymers 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- FVCOIAYSJZGECG-UHFFFAOYSA-N diethylhydroxylamine Chemical compound CCN(O)CC FVCOIAYSJZGECG-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-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
- G03C8/02—Photosensitive materials characterised by the image-forming section
- G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
- G03C8/06—Silver salt diffusion transfer
-
- 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/30—Developers
- G03C5/3021—Developers with oxydisable hydroxyl or amine groups linked to an aromatic ring
Definitions
- ABSTRACT There is provided a viscous developer for a diffusion transfer process, which contains (a) a developing agent, (b) a silver halide solvent, (0) a thickening agent and (d) an alkali agent, said developing agent represented by the formula:
- R is a member selected from the group consisting of an ethyl group, a propyl group, and a butyl group.
- This invention relates to a processing of silver halide photographic material, in particular, to a developer composition for the diffusion transfer process of silver halide photographic material.
- a negative material for the silver halide diffusion transfer process is prepared by coating gelation silver halide emulsion layer on a support and a positive material therefor is prepared by coating a layer containing silver precipitating nuclei such as metal sulfide, colloidal silica (popularly called silica gel), etc. on a support.
- a developing agent, a solvent for silver halide, an alkali agent, an antifogging agent, an antioxidant, a toning agent, etc. are contained in a developer used for the diffusion transfer process.
- an exposed silver halide in the negative material is developed with a developing agent contained in a developer, while a non-exposed silver halide in the material is reacted with a silver halide solvent to form soluble silver complex, which is diffused to a positive material and is deposited on the silver-precipitating nuclei to give positive silver images.
- the treatment is carried out by superposing, usually an exposed negative material on a positive material and dipping them in a developer
- the negative and positive materials are not stained by the developer and can be quickly dried because the developer is not impregnated into supports of the negative material and the positive material.
- the viscous developer is not split from the contacted materials and hence handly or portable processings is possible by the diffusion transfer process using such viscous developer.
- a developing agent, a silver halide solvent and an alkali agent are contained in the developer remaining on the surface of the positive material, which cause stain and fading of images.
- a viscous developer is usually so adhesive that it often becomes impossible to strip the positive material off the negative material.
- An object of the invention is to provide highly active viscous developer with which silver images of high density can be obtained.
- Another object of the invention is to provide a developer which does not remain on the surface of a positive 5 is described in U.S. Pat. No. 3,214,469. Structurally,
- R represents ethyl, propyl or butyl group.
- the developing agents used in this invention are ethylhydroquinone, isopropylhydroquinone, nbutylhydroquinone, t-butylhydroquinone, etc.
- a developing agent represented by the following formula I .Alkylene-X this is a derivative of the compound of this invention, but, the compound of this invention which is simple in structure and can be prepared cheaply is far superior to the compound described therein.
- hydroquinone derivatives As is described above, quite many hydroquinone derivatives are known. However, it has not been known that lower alkyl hydroquinone which is far simpler than those described in these specifications is effective for the high speed diffusion transfer process using such kind of viscous developer as is used in this invention.
- the superior characters of the compound of this invention compared with the known hydroquinone derivatives are as follows.
- a film which can be easily stripped off is formed by the mutual action of the cellulose derivative and the oxidized product of said alkylhydroquinone. Therefore, the surface of the positive image is smooth and clean. This action is especially remarkable when tbutylhydroquinone is used, and other hydroquinone derivatives are inferior in this point.
- supplementary developing agents are not used, and quite high transfer density to the imagereceiving layer can be obtained by the independent use.
- white part of the resulting image fully keeps its whiteness, and a good gradation can be obtained.
- alkylhydroquinone exhibits especially great effects in a developer wherein cellulose derivative is used as a thickening agent.
- substituent R in the alkylhydroquinone is hydrogen atom or methyl group
- such derivative has no film-forming ability, has a weak activity as a developing agent for diffusion transfer treatment and the transfer density thereby obtained is low.
- substituent R is alkyl group having more than 4 carbon atoms, the solubility thereof is small and cannot be dissolved in such an amount that gives sufficient transfer density.
- cellulose derivatives used in this invention are methyl cellulose, hydroxyethyl cellulose, and carboxymethyl cellulose. These may be used independently or in combination.
- the developing agent of this invention is, as is illustrated in the following Examples, active especially as a developing agent for diffusion transfer treatment.
- the developing agents used in a usual photographic treatment such as hydroquinone, etc. do not give contrast high transfer density.
- the oxidized product of the developing agent used in this invention has the capability to react with the cellulose derivative and form a film. Therefore, when the viscous developer is spread between the negative material and positive material, the developer is exposed to air and the developing agent therein is oxidized. For this reason, upon stripping the negative material off the positive material after the treatment, the developer layer adheres to the surface of the gelatin protective layer of the negative material-in a form of film and is stripped off the positive material without remaining on the surface thereof. Therefore, prints stable for storage can be obtained. Besides, the developer loses its adhesivity because of the film formation due to the abovementioned reason, and there is no possibility that it becomes impossible to strip the negative material off the positive material.
- the viscosity of the viscous developer suitable to spread it uniformly is in the range of from 1,000 cp to 200,000 cp (at 25).
- the amount of the thickening agent added is adjusted so as to give the viscosity within this range.
- Sodium thiosulfate is the most effective as a silver halide solvent. Potassium thiocyanate may be used together.
- Potassium hydroxide, sodium hydroxide, sodium triphosphate, triethanolamine, etc. are used as alkali agents.
- Potassium bromide, 6-nitrobenzimidazole, etc. are used as antifogging agents.
- Potassium sulfite, sodium sulfite, sodium bisulfite, metapotassium metabisulfite, sodium benzene-sulfonate, ascorbic acid, diethylhydroxylamine, etc. are used as antioxidants.
- As a toning agent any kind of toning agent used for conventional diffusion transfer treatment is used.
- triazole compounds described in the specification of the Japanese Patent No. 523,043 are effective.
- EXAMPLE 1 Exposure is conducted stepwise using Neopan SSS (made by Fuji Photo Film Co., Ltd.) as a negative material.
- a positive material is prepared by coating a solution having the following composition onto a baryta paper, and drying it.
- Silica gel (SANTOCEL C, made by Monsanto Chemical Co.) 300 g Sodium sulfide (1% aqueous solution) 2800 cc Cadmium acetate-2I-l,0 30 g Water cc Viscous developers are prepared by mixing ingredients described in Table 1 under nitrogenous atmosphere. Samples to which hydroquinone and methyl hydroquinone alone is added are set forth for comparison.
- the transfer density obtained by using npropylhydroquinone or t-butylhydr'oquinone is higher than that obtained by using hydroquinone or methylhydroquinone.
- n-propylhydroquinone and tbutylhydroquinone have a property to react with cellulose and form film. Accordingly, the developer is stripper off adhering to the surface of the negative material in a film form, and no developer remains on the positive print.
- Example 3 In the Example 1, a solution having the following composition is used as a viscous developer.
- a viscous developer for the diffusion transfer process which contains:
- a thickening agent selected from the group consisting of methyl cellulose, hydroxyethyl cellulose, and carboxymethyl cellulose,
- R is a member selected from the group consisting of an ethyl group, a propyl group, and a butyl group.
- said developing agent is a member selected from the group consisting of ethylhydroquinone, isopropylhydroquinone, nbutylhydroquinone and t-butylhydroquinone.
- said silver halide solvent is a combination of sodium thiosulfate and potassium thiocyanate.
- alkali agent is a member selected from the group consisting of potassium hydroxide, soidum hydroxide, sodium thiphosphate, and triethanolamine.
- said antifogging agent is a member selected from the group consisting of potassium bromide and 6-nitrobenzimidazole.
- said antioxidant is a member sleected from the group consisting of potassium fulfite, sodium sulfite, sodium bisulfite, metapotassium metabisulfite, sodium benzenesulfonate, ascorbic acid, and diethylhydroxlamine.
- said toner is a member selected from the group consisting of 3- morpholinomethyl-l-phenyl-l,3,4-triazole, S-methyl- 3 morpholinomethyl-l-phenyl-1,3,4-triazole-4-in-2- thione, and 3-hydroxymethyl-5-methyl-l,3,4-triazole- 4-in-2-thione.
- a viscous developer for the diffusion transfer process which contains:
- a developing agent selected from the group consisting of ethylhydroquinone, isopropylhydroquinone, n-butylhydroquinone and tbutylhydroquinone,
- a silver halide solvent selected from the group consisting of sodium thiosulfate and a mixture of so-
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP45071961A JPS4911574B1 (enrdf_load_stackoverflow) | 1970-08-17 | 1970-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3765892A true US3765892A (en) | 1973-10-16 |
Family
ID=13475563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00172596A Expired - Lifetime US3765892A (en) | 1970-08-17 | 1971-08-17 | Viscous developer for silver halid diffusion transfer processes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3765892A (enrdf_load_stackoverflow) |
| JP (1) | JPS4911574B1 (enrdf_load_stackoverflow) |
| DE (1) | DE2141197A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2104426A5 (enrdf_load_stackoverflow) |
| GB (1) | GB1334127A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040046556A1 (en) * | 2002-05-08 | 2004-03-11 | Michiya Okada | Supersensitive nuclear magnetic resonance imaging apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345166A (en) * | 1961-03-09 | 1967-10-03 | Polaroid Corp | Photographic process whereby a fully developed and fixed negative is formed concurrently with a positive silver transfer image |
| US3392019A (en) * | 1963-04-08 | 1968-07-09 | Eastman Kodak Co | Viscous silver halide photographid monobath solutions |
| US3615513A (en) * | 1965-11-01 | 1971-10-26 | Eastman Kodak Co | Inhibition of silvering in photographic processing solutions |
| US3620728A (en) * | 1969-04-03 | 1971-11-16 | Eastman Kodak Co | Receiving sheet for diffusion transfer processes |
-
1970
- 1970-08-17 JP JP45071961A patent/JPS4911574B1/ja active Pending
-
1971
- 1971-08-13 GB GB3821471A patent/GB1334127A/en not_active Expired
- 1971-08-17 FR FR7129966A patent/FR2104426A5/fr not_active Expired
- 1971-08-17 US US00172596A patent/US3765892A/en not_active Expired - Lifetime
- 1971-08-17 DE DE19712141197 patent/DE2141197A1/de active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345166A (en) * | 1961-03-09 | 1967-10-03 | Polaroid Corp | Photographic process whereby a fully developed and fixed negative is formed concurrently with a positive silver transfer image |
| US3392019A (en) * | 1963-04-08 | 1968-07-09 | Eastman Kodak Co | Viscous silver halide photographid monobath solutions |
| US3615513A (en) * | 1965-11-01 | 1971-10-26 | Eastman Kodak Co | Inhibition of silvering in photographic processing solutions |
| US3620728A (en) * | 1969-04-03 | 1971-11-16 | Eastman Kodak Co | Receiving sheet for diffusion transfer processes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040046556A1 (en) * | 2002-05-08 | 2004-03-11 | Michiya Okada | Supersensitive nuclear magnetic resonance imaging apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4911574B1 (enrdf_load_stackoverflow) | 1974-03-18 |
| DE2141197A1 (de) | 1972-03-09 |
| FR2104426A5 (enrdf_load_stackoverflow) | 1972-04-14 |
| GB1334127A (en) | 1973-10-17 |
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