US3674481A - Image receiving material for the silver salt diffusion process - Google Patents
Image receiving material for the silver salt diffusion process Download PDFInfo
- Publication number
- US3674481A US3674481A US41085A US3674481DA US3674481A US 3674481 A US3674481 A US 3674481A US 41085 A US41085 A US 41085A US 3674481D A US3674481D A US 3674481DA US 3674481 A US3674481 A US 3674481A
- Authority
- US
- United States
- Prior art keywords
- image receiving
- silver
- silver salt
- diffusion process
- receiving layer
- 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
- 239000000463 material Substances 0.000 title abstract description 17
- 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 title abstract description 13
- 238000009792 diffusion process Methods 0.000 title abstract description 10
- 150000001875 compounds Chemical class 0.000 abstract description 15
- LLCOQBODWBFTDD-UHFFFAOYSA-N 1h-triazol-1-ium-4-thiolate Chemical class SC1=CNN=N1 LLCOQBODWBFTDD-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052709 silver Inorganic materials 0.000 description 23
- 239000004332 silver Substances 0.000 description 23
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 14
- -1 silver halide Chemical class 0.000 description 14
- 239000000243 solution Substances 0.000 description 10
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 8
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 7
- 235000019345 sodium thiosulphate Nutrition 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 6
- 108010010803 Gelatin Proteins 0.000 description 5
- 239000012190 activator Substances 0.000 description 5
- 125000003277 amino group Chemical group 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 229920000159 gelatin Polymers 0.000 description 5
- 239000008273 gelatin Substances 0.000 description 5
- 235000019322 gelatine Nutrition 0.000 description 5
- 235000011852 gelatine desserts Nutrition 0.000 description 5
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 239000013068 control sample Substances 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 150000003346 selenoethers Chemical class 0.000 description 3
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 3
- 125000003396 thiol group Chemical group [H]S* 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- 125000003710 aryl alkyl group Chemical group 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229910001864 baryta Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 125000000753 cycloalkyl group Chemical group 0.000 description 2
- 125000001841 imino group Chemical group [H]N=* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 2
- 229930182490 saponin Natural products 0.000 description 2
- 150000007949 saponins Chemical class 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 150000004763 sulfides Chemical class 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- AOSZTAHDEDLTLQ-AZKQZHLXSA-N (1S,2S,4R,8S,9S,11S,12R,13S,19S)-6-[(3-chlorophenyl)methyl]-12,19-difluoro-11-hydroxy-8-(2-hydroxyacetyl)-9,13-dimethyl-6-azapentacyclo[10.8.0.02,9.04,8.013,18]icosa-14,17-dien-16-one Chemical compound C([C@@H]1C[C@H]2[C@H]3[C@]([C@]4(C=CC(=O)C=C4[C@@H](F)C3)C)(F)[C@@H](O)C[C@@]2([C@@]1(C1)C(=O)CO)C)N1CC1=CC=CC(Cl)=C1 AOSZTAHDEDLTLQ-AZKQZHLXSA-N 0.000 description 1
- JCHBUIXYMNDGGW-UHFFFAOYSA-N 1-(disulfanyl)pyrazole Chemical group SSN1C=CC=N1 JCHBUIXYMNDGGW-UHFFFAOYSA-N 0.000 description 1
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 1
- OTVCBBXLGYYSNC-UHFFFAOYSA-N 3,4-dimethyl-1h-1,2,4-triazole-5-thione Chemical compound CC1=NN=C(S)N1C OTVCBBXLGYYSNC-UHFFFAOYSA-N 0.000 description 1
- 241000857945 Anita Species 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229940126657 Compound 17 Drugs 0.000 description 1
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical group [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- HDSBZMRLPLPFLQ-UHFFFAOYSA-N Propylene glycol alginate Chemical compound OC1C(O)C(OC)OC(C(O)=O)C1OC1C(O)C(O)C(C)C(C(=O)OCC(C)O)O1 HDSBZMRLPLPFLQ-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 241001061127 Thione Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052946 acanthite Inorganic materials 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 229960001126 alginic acid Drugs 0.000 description 1
- 150000004781 alginic acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229940101006 anhydrous sodium sulfite Drugs 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- CMCWWLVWPDLCRM-UHFFFAOYSA-N phenidone Chemical compound N1C(=O)CCN1C1=CC=CC=C1 CMCWWLVWPDLCRM-UHFFFAOYSA-N 0.000 description 1
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000770 propane-1,2-diol alginate Substances 0.000 description 1
- 235000010409 propane-1,2-diol alginate Nutrition 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- XUARKZBEFFVFRG-UHFFFAOYSA-N silver sulfide Chemical compound [S-2].[Ag+].[Ag+] XUARKZBEFFVFRG-UHFFFAOYSA-N 0.000 description 1
- 229940056910 silver sulfide Drugs 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 229940001482 sodium sulfite Drugs 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- G03C8/24—Photosensitive materials characterised by the image-receiving section
- G03C8/243—Toners for the silver image
Definitions
- the invention relates to an image receiving material for the silver salt diffusion process which contains heterocyclic dimercapto compounds for improving the stability of the finished silver images.
- the silver salt diffusion process for the direct production of positives is described in French Pat. No. 879,995.
- the unexposed and undeveloped silver halide of an exposed silver halide emulsion layer is dissolved during development, and transferred to an image receiving layer, which is in close contact with the exposed silver halide emulsion layer, so as to produce a positive image in the image receiving layer upon development of the transferred silver halide in the presence of development nuclei which are uniformly distributed in the image receiving layer.
- the terms negative and positive are to be understood as being only in relation to one another, i.e. direct negatives can also be obtained from a negative original by the same process.
- the complex forming agent required for dissolving the unexposed and undeveloped silver halide is added either to the developer or to the image receiving layer.
- the finished copy therefore, still contains thiosulfate in quantities of about 0.5 to 1.5 g./m.
- the presence of compounds which form complexes with the silver salt gives rise to the disadvantages that these complex forming agents reduce the concentration of silver ions and thereby facilitate the oxidation of the metallic silver.
- the image silver is, therefore, easily attacked by oxidation and converted into a complex or simple silver salt. This causes particularly in a moist atmosphere fading of the silver image or a brown discoloration of the silver in the image.
- an image receiving material for the silver salt diffusion process which comprises an image receiving layer which may contain development nuclei, the image receiving layer containing a mercapto triazole derivative of the following formula:
- Y an alkylene chain containing 3 to 10 methylene groups which are interrupted by hetero atoms such as oxygen or sulfur or imino groups.
- the concentration of the mercaptotriazole compounds in the image receiving layer may vary within wide limits. This depends on the requirements of the reproduction process and eifectivenes of the particular compounds. Quantities of between 1 and 300 mg./m. and preferably between 5 and 100 mg./m. of image receiving layer, have generally been found to be sufficient.
- the triazole derivatives are soluble in aqueous alkalies or dimethylformamide and may be added in form of solution to the casting solutions for the production of the image receiving layer.
- the image receiving material generally consists of an image receiving layer on a suitable support.
- the support may be the known sheet-like materials, particularly paper, preferably baryta-coated paper.
- Suitable binders for the image receiving layer are the hydrophilic film-forming materials usually used for this purpose, e.g. proteins, particularly gelatin, also starch or starch derivatives, alginic acid or derivatives thereof such as salts, esters or amides, also carragenates or synthetic binders such as polyvinyl alcohol, polyvinyl pyrrolidone, partially saponified polyvinyl acetate, etc.
- hydrophilic film-forming materials usually used for this purpose, e.g. proteins, particularly gelatin, also starch or starch derivatives, alginic acid or derivatives thereof such as salts, esters or amides, also carragenates or synthetic binders such as polyvinyl alcohol, polyvinyl pyrrolidone, partially saponified polyvinyl acetate, etc.
- the image receiving layer contains development nuclei of the usual type, e.g. sulfides or selenides of heavy metals such as cobalt, nickel, zinc or silver, and, furthermore nuclei of these metals.
- Modified nuclei of heavy metal sulfides or heavy metal selenides consisting of a core of an inert material, of a metal or of a sulfide or selenide other than that present in the surface are also suitable. Nuclei of this type have been described in German Pat. No. 1,201,997 or in US. Pats. Nos. 2,698,236; 2,698,238 or 2,698,245.
- the image receiving layers may, of course, contain the usual additives, particularly blue toners. Image receiving layers of this type have been described in German Pats. Nos. 1,108,563; 1,124,355; 1,124,354 and 1,153,247.
- the usual light-sensitive materials which generally contain a light-sensitive silver halide gelatin emulsion layer are suitable for the modification of the silver salt diffusion Quantities or 1 to 300 mg., preferably 50 to 250 mg./l.
- EXAMPLE 1 Image receiving material A baryta-coating of the following solution is applied to a support of paper (80 g. per m?);
- the baryta layer is dried and then coated with an image receiving layer of the following casting solution:
- the layer is applied in such a thickness that it contains about 1.1 g. of sodium thiosulfate per m9.
- This layer is applied in such a thickness that it contains about 0.6 g. of sodium thiosulfate per 111. .Y
- the above image receiving layer is brought into contact with an exposed silver chloride gelatin emulsion layer and developed in the following developer bath, using a conventional processing apparatus:
- the contact time is 15 seconds.
- the negative is separated from the image receiving layer.
- a portion cut out of the finished copy is stored for 24 hours in a vessel over water.
- Several of these uniformly moist portions of copies are introduced into a polyethylene bag which is inserted into a second bag containing 30 ml. of Water and the bags are sealed.
- the sealed bags are stored in a heating cupboard at 60 C. for 24 hours and 48 hours, respectively, and the alteration in the silver image is judged at the end of this time.
- the comparison sample shows a discoloration varying from brown to pale brown.
- the maximum density of the various materials is determined on fresh, air dried copies and copies which have been stored in moist heat, using a densitometer customarily employed in the art. The following results are obtained:
- the light-sensitive silver halide layer contains about 600 mg. of hydroquinone an 150 g. of l-phenylpyrazolidone-(3) per m.
- the light-sensitive layer is exposed, contacted with an image receiving layer as described in Example 1 and developed in the following activator solution instead of in the developer bath indicated in Example 1:
- a light-insensitive image receiving material for the silver salt difiusion process comprising an image receiving layer which contains a compound of the following formula:
- Y an alkylene chain containing 3 to 10 methylene groups which are interrupted by oxygen, sulfur or imino groups.
- Patent NO. 8 Dated Agril 13, 1971 Inventor(s) James A. Pyne, Jr. e't. a1.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691930339 DE1930339A1 (de) | 1969-06-14 | 1969-06-14 | Bildempfangsmaterial fuer Silbersalzdiffusionsverfahren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3674481A true US3674481A (en) | 1972-07-04 |
Family
ID=5737050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US41085A Expired - Lifetime US3674481A (en) | 1969-06-14 | 1970-05-27 | Image receiving material for the silver salt diffusion process |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3674481A (en, 2012) |
| JP (1) | JPS4832732B1 (en, 2012) |
| BE (1) | BE751788A (en, 2012) |
| CA (1) | CA934594A (en, 2012) |
| DE (1) | DE1930339A1 (en, 2012) |
| FR (1) | FR2052525A5 (en, 2012) |
| GB (1) | GB1276961A (en, 2012) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4242436A (en) * | 1977-12-15 | 1980-12-30 | Agfa-Gevaert N.V. | Photographic material for continuous tone reproduction |
| US4731410A (en) * | 1985-07-08 | 1988-03-15 | Basf Aktiengesellschaft | Polyurethane adhesive mixtures |
| US4760015A (en) * | 1986-04-23 | 1988-07-26 | Agfa Gevaert Aktiengesellschaft | Stabilization of a photographically produced silver image using an amino-1,2,4-triazole |
-
1969
- 1969-06-14 DE DE19691930339 patent/DE1930339A1/de active Pending
-
1970
- 1970-05-27 US US41085A patent/US3674481A/en not_active Expired - Lifetime
- 1970-05-28 CA CA083960A patent/CA934594A/en not_active Expired
- 1970-06-02 GB GB26511/70A patent/GB1276961A/en not_active Expired
- 1970-06-11 BE BE751788D patent/BE751788A/xx unknown
- 1970-06-12 FR FR7021760A patent/FR2052525A5/fr not_active Expired
- 1970-06-15 JP JP45051099A patent/JPS4832732B1/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4242436A (en) * | 1977-12-15 | 1980-12-30 | Agfa-Gevaert N.V. | Photographic material for continuous tone reproduction |
| US4731410A (en) * | 1985-07-08 | 1988-03-15 | Basf Aktiengesellschaft | Polyurethane adhesive mixtures |
| US4760015A (en) * | 1986-04-23 | 1988-07-26 | Agfa Gevaert Aktiengesellschaft | Stabilization of a photographically produced silver image using an amino-1,2,4-triazole |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1930339A1 (de) | 1970-12-17 |
| GB1276961A (en) | 1972-06-07 |
| BE751788A (en, 2012) | 1970-12-11 |
| FR2052525A5 (en, 2012) | 1971-04-09 |
| CA934594A (en) | 1973-10-02 |
| JPS4832732B1 (en, 2012) | 1973-10-08 |
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