WO1981000922A1 - Material for obtaining photographic prints by dry process - Google Patents
Material for obtaining photographic prints by dry process Download PDFInfo
- Publication number
- WO1981000922A1 WO1981000922A1 PCT/CH1980/000113 CH8000113W WO8100922A1 WO 1981000922 A1 WO1981000922 A1 WO 1981000922A1 CH 8000113 W CH8000113 W CH 8000113W WO 8100922 A1 WO8100922 A1 WO 8100922A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image
- light
- silver
- layer
- compounds
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims description 17
- 238000001035 drying Methods 0.000 title 1
- 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 claims abstract description 9
- 239000007800 oxidant agent Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- JGBAASVQPMTVHO-UHFFFAOYSA-N 2,5-dihydroperoxy-2,5-dimethylhexane Chemical compound OOC(C)(C)CCC(C)(C)OO JGBAASVQPMTVHO-UHFFFAOYSA-N 0.000 claims description 3
- 150000001451 organic peroxides Chemical group 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 13
- 239000003638 chemical reducing agent Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 239000000975 dye Substances 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 150000003378 silver Chemical class 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 229940079877 pyrogallol Drugs 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- RCALTZPFYQMVGL-UHFFFAOYSA-N 2,6-dicyclohexyl-4-methylphenol Chemical compound OC=1C(C2CCCCC2)=CC(C)=CC=1C1CCCCC1 RCALTZPFYQMVGL-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- IINNWAYUJNWZRM-UHFFFAOYSA-L erythrosin B Chemical compound [Na+].[Na+].[O-]C(=O)C1=CC=CC=C1C1=C2C=C(I)C(=O)C(I)=C2OC2=C(I)C([O-])=C(I)C=C21 IINNWAYUJNWZRM-UHFFFAOYSA-L 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 125000000623 heterocyclic group Chemical group 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052757 nitrogen Chemical group 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- IJAPPYDYQCXOEF-UHFFFAOYSA-N phthalazin-1(2H)-one Chemical compound C1=CC=C2C(=O)NN=CC2=C1 IJAPPYDYQCXOEF-UHFFFAOYSA-N 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- AQRYNYUOKMNDDV-UHFFFAOYSA-M silver behenate Chemical compound [Ag+].CCCCCCCCCCCCCCCCCCCCCC([O-])=O AQRYNYUOKMNDDV-UHFFFAOYSA-M 0.000 description 2
- ORYURPRSXLUCSS-UHFFFAOYSA-M silver;octadecanoate Chemical compound [Ag+].CCCCCCCCCCCCCCCCCC([O-])=O ORYURPRSXLUCSS-UHFFFAOYSA-M 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- XBYRMPXUBGMOJC-UHFFFAOYSA-N 1,2-dihydropyrazol-3-one Chemical class OC=1C=CNN=1 XBYRMPXUBGMOJC-UHFFFAOYSA-N 0.000 description 1
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 1
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- POTBKLVBOJZRNG-UHFFFAOYSA-N 1-hydroxy-2h-naphthalene-1-carboxylic acid Chemical compound C1=CC=C2C(C(=O)O)(O)CC=CC2=C1 POTBKLVBOJZRNG-UHFFFAOYSA-N 0.000 description 1
- XIROXSOOOAZHLL-UHFFFAOYSA-N 2',3',4'-Trihydroxyacetophenone Chemical compound CC(=O)C1=CC=C(O)C(O)=C1O XIROXSOOOAZHLL-UHFFFAOYSA-N 0.000 description 1
- FLFWJIBUZQARMD-UHFFFAOYSA-N 2-mercapto-1,3-benzoxazole Chemical compound C1=CC=C2OC(S)=NC2=C1 FLFWJIBUZQARMD-UHFFFAOYSA-N 0.000 description 1
- 150000004786 2-naphthols Chemical class 0.000 description 1
- OPXYNEYEDHAXOM-UHFFFAOYSA-N 3-oxobutanenitrile Chemical class CC(=O)CC#N OPXYNEYEDHAXOM-UHFFFAOYSA-N 0.000 description 1
- OUBZKZQULSHJLW-UHFFFAOYSA-N 4-(4-chlorophenyl)-3-oxobutanenitrile Chemical compound ClC1=CC=C(CC(=O)CC#N)C=C1 OUBZKZQULSHJLW-UHFFFAOYSA-N 0.000 description 1
- BOTGCZBEERTTDQ-UHFFFAOYSA-N 4-Methoxy-1-naphthol Chemical compound C1=CC=C2C(OC)=CC=C(O)C2=C1 BOTGCZBEERTTDQ-UHFFFAOYSA-N 0.000 description 1
- PZSCUHISJBQKSN-UHFFFAOYSA-N 4-methoxy-1,2-dihydronaphthalen-1-ol Chemical compound C1=CC=C2C(OC)=CCC(O)C2=C1 PZSCUHISJBQKSN-UHFFFAOYSA-N 0.000 description 1
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical class NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical class C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 235000021357 Behenic acid Nutrition 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical group O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- RPWFJAMTCNSJKK-UHFFFAOYSA-N Dodecyl gallate Chemical compound CCCCCCCCCCCCOC(=O)C1=CC(O)=C(O)C(O)=C1 RPWFJAMTCNSJKK-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- JPYHHZQJCSQRJY-UHFFFAOYSA-N Phloroglucinol Natural products CCC=CCC=CCC=CCC=CCCCCC(=O)C1=C(O)C=C(O)C=C1O JPYHHZQJCSQRJY-UHFFFAOYSA-N 0.000 description 1
- 229920002845 Poly(methacrylic acid) Chemical class 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920002125 Sokalan® Chemical class 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- QLVHFTGKDGTJDH-UHFFFAOYSA-N acetic acid;ethenyl acetate Chemical compound CC(O)=O.CC(=O)OC=C QLVHFTGKDGTJDH-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 235000010443 alginic acid Nutrition 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
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- UQTCSFPVHNDUOG-UHFFFAOYSA-N azanium 4-carboxy-2,6-dihydroxyphenolate Chemical compound [NH4+].OC(=O)C1=CC(O)=C([O-])C(O)=C1 UQTCSFPVHNDUOG-UHFFFAOYSA-N 0.000 description 1
- HNYOPLTXPVRDBG-UHFFFAOYSA-N barbituric acid Chemical compound O=C1CC(=O)NC(=O)N1 HNYOPLTXPVRDBG-UHFFFAOYSA-N 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
- 229940116226 behenic acid Drugs 0.000 description 1
- VCCBEIPGXKNHFW-UHFFFAOYSA-N biphenyl-4,4'-diol Chemical group C1=CC(O)=CC=C1C1=CC=C(O)C=C1 VCCBEIPGXKNHFW-UHFFFAOYSA-N 0.000 description 1
- XOPOEBVTQYAOSV-UHFFFAOYSA-N butyl 3,4,5-trihydroxybenzoate Chemical compound CCCCOC(=O)C1=CC(O)=C(O)C(O)=C1 XOPOEBVTQYAOSV-UHFFFAOYSA-N 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 235000010386 dodecyl gallate Nutrition 0.000 description 1
- 229940080643 dodecyl gallate Drugs 0.000 description 1
- 239000000555 dodecyl gallate Substances 0.000 description 1
- 239000004174 erythrosine Substances 0.000 description 1
- 229940011411 erythrosine Drugs 0.000 description 1
- 235000012732 erythrosine Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 150000004668 long chain fatty acids Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Chemical group 0.000 description 1
- CMCWWLVWPDLCRM-UHFFFAOYSA-N phenidone Chemical compound N1C(=O)CCN1C1=CC=CC=C1 CMCWWLVWPDLCRM-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- QCDYQQDYXPDABM-UHFFFAOYSA-N phloroglucinol Chemical compound OC1=CC(O)=CC(O)=C1 QCDYQQDYXPDABM-UHFFFAOYSA-N 0.000 description 1
- 229960001553 phloroglucinol Drugs 0.000 description 1
- 239000004584 polyacrylic acid Chemical class 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000120 polyethyl acrylate Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- CVHZOJJKTDOEJC-UHFFFAOYSA-N saccharin Chemical compound C1=CC=C2C(=O)NS(=O)(=O)C2=C1 CVHZOJJKTDOEJC-UHFFFAOYSA-N 0.000 description 1
- 229940081974 saccharin Drugs 0.000 description 1
- 235000019204 saccharin Nutrition 0.000 description 1
- 239000000901 saccharin and its Na,K and Ca salt Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229940100890 silver compound Drugs 0.000 description 1
- 150000003379 silver compounds Chemical class 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000101 thioether group Chemical group 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000011787 zinc oxide 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
- G03C1/00—Photosensitive materials
- G03C1/494—Silver salt compositions other than silver halide emulsions; Photothermographic systems ; Thermographic systems using noble metal compounds
- G03C1/498—Photothermographic systems, e.g. dry silver
Definitions
- the invention relates to an image-receiving material for the production of photographic copies in a dry way, which contains a light-insensitive silver salt.
- the invention relates to a thermo-photographic copying material for producing copies by, by means of heat-activated reduction of a silver salt of an organic acid, in the presence of a light-sensitive reducing agent, which copying material contains in at least one layer a silver salt of an organic acid and a light-resistant reducing agent for the silver ion.
- the photosensitive, reducing organic compound is first made inactive and non-transferable by light by exposing imagewise in the presence of a compound which contributes to inactivating the reducing compound.
- the reducing compound still remaining in the unexposed or less strongly exposed areas is then transferred to the rapid receiving layer by heat.
- connections are e.g. 1 (2H) -phala zinone, barbituric acid, saccharin and 2-mercaptobenzoxazole.
- 1 (2H) phthalazinone is preferably used, since these images have a deep black color.
- the invention is based on the object of stabilizing the image-receiving material in such a way that the background remains white at the uncopied areas, but the image still appears deep black.
- Organic dihydroperoxides have proven to be particularly suitable, preferably 2,5-dimethylhexane 2,5 dihydroperoxide.
- the oxidizing agents can be added to the layers in various amounts. The optimal amount depends on the desired effect and the layer composition. Generally, additions of 0.1-10 moles, preferably 0.5-5 moles, per mole of toner have been found to be most effective.
- the oxidizing agents can be used in combination with the materials and compounds known for the respective heat development process, e.g. Reducing agents, binders, silver salts and other heavy metal salts, white pigments and stabilizers are used.
- Silver compounds which have largely proven to be insensitive to light under the conditions of the process, e.g. the silver salts of aliphatic carboxylic acids with a thioether group or silver salts of long-chain fatty acids such as silver behenate, silver plaatitation, silver stearate described in the British patent GB P 1,111,492.
- silver behenate and silver steate are preferable because, together with free behenic acid or stearic acid, they increase the moisture resistance of the image-receiving layer.
- Reducing compounds which have proven suitable for the thermally initiated reduction of these silver salts include, for example, pyrogallol, 4-3tearoyl-pyrogallol, galloacetophenone, di-tert-butyl-pyrogallol, butyl gallate, dodecyl gallate, gallic acid, ammonium gallate, 2.5- Dihydroxy-benzoic acid, - And ß-naphthols, 1-hydroxy-naphthoic acid (2), phloroglucinol, catechol, hydroquinone, 1-phenyl-pyrazolidin-3-one, 4,4'-dihydroxybiphenyl, 1-hydroxy-4-methoxy-naphthalene , 1-Hydroxy-4-methoxy-dihydronaphthalene, o
- reducing agents that are suitable for use at higher temperatures are pyrazolin-5-one compounds with at least one hydrogen atom in the 4-position. Suitable compounds of the latter type are described in German Offenlegungsschrift 2 117 053.
- these reducing compounds are organic compounds in which an active hydrogen atom is bonded to a carbon, oxygen or nitrogen atom, which in turn is bonded to an atom of an aromatic or heterocyclic ring or in If the nitrogen atom can also be part of a heterocyclic ring.
- Halogen-containing fluorescein dyes such as Erythrosine and the dyes described in German patent applications P 20 42 054.6, 20 42 531.4, 20 42 663.5 and 21.06 577.0.
- compounds which act as auxiliary reducing agents can be used.
- examples of such compounds are phenols with steric hindrance which actively participate in the reduction reaction when heated, such as 2,6-di-tert-butyl-4-methylphenol or 2,6-dicyclohexyl-p-cresol.
- the image tone and the image density of the image-receiving material can be influenced by certain metal salts, e.g. Lead II stearate can be improved.
- metal salts e.g. Lead II stearate
- Such metal ion image intensifiers and their use are described in German Patent Specification 1,572,209.
- the usual natural or synthetic film-forming polymers are suitable as binders for the light-sensitive layer or for the image-receiving layer, e.g. Proteins, in particular gelatin, cellulose derivatives, in particular cellulose ethers, cellulose esters or carboxymethyl cellulose, alginic acid and derivatives thereof, starch ether or gallactomannan, furthermore polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl chloride, copolymers of vinyl chloride and vinyl acetate, polyvinyl acetate or wholly or partly saponified polyvinyl acetate vinyl acetate or copolymer of acrylonitrile and acrylamide, polyacrylic acid esters, polymethacrylic acid esters, polyethylene and others
- the layers can be used as self-supporting layers or applied to a layer support.
- Suitable supports are e.g. Paper, especially baryta or laminated paper, cellulose esters, e.g. Cellulose triacetate, polyester, in particular based on ethylene terephthalate, glass, etc.
- the layers can also contain white pigments, such as zinc oxide, silicon dioxide or titanium dioxide as fillers, to improve the whiteness and to influence the adhesiveness of the layers.
- white pigments such as zinc oxide, silicon dioxide or titanium dioxide as fillers
- the reactants can also be placed in a fibrous web.
- pigments, fillers, fusible substances such as Waxes, dyes and various other additives can be incorporated.
- the silver salt and the toner are preferably mixed together before pouring. However, they can also be applied separately in adjacent layers from which the toner - e.g. when heating the carrier film - can diffuse to the metal salt.
- the light sources customary in reproduction technology such as halogen lamps, iodine quartz lamps or incandescent lamps, can be used to expose the light-sensitive layers.
- the spectral sensitivity of the light-sensitive material depends on the nature of the sensitizer dyes used.
- the transfer of the image-forming compounds from the unexposed areas of the light-sensitive layers into the image-receiving layer takes place in the heat at temperatures between 80 and 200 ° C.
- the heating can take place, for example, by guiding the exposed light-sensitive layer in contact with the image-receiving layer over hot plates or rollers or by irradiation with UR light.
- the most favorable temperature and heating time of course depend on the nature of the image-forming compound or the composition of the light-insensitive silver salt-containing copying material; it can be determined by a few simple experiments. example
- a transparent paper is coated in an amount of 25 g / m 2 with the following mixture
- This mixture is ground in a ball mill for 24 h. To this ground mass are added before pouring
- the ready-to-use mixture is then poured onto a paper support in an amount of 150 g / m 2 and dried.
- the photosensitive layer is exposed to light.
- the exposure lasts 30 seconds and is carried out with a tungsten filament lamp of 1500 watts, which is attached at a distance of 5 cm from the light-sensitive material.
- the exposed layer is then 5 at 125 ° C. 5 Brought into contact with the image-receiving layer for seconds. Deep black images with high density are obtained, although the background is dotted gray-black.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
The layer contains a photoresistant silver salt. In order to obtain well contrasted black images on white background, the layer receives an oxidation means, particularly an organic peroxyde which contains the white background.
Description
Bildempfangsmaterial für die Herstellung von photographischen Kopien auf trockenem Wege Image receiving material for the production of photographic copies by dry means
Die Erfindung bezieht sich auf ein Bildempfangsmaterial für die Herstellung von photographischen Kopien auf trockenem Wege, das ein lichtunempfindliches Silbersalz enthält. Insbesondere betrifft die Erfindung ein thermophotographisches Kopiermaterial zur Herstellung von Kopien, durch, mittels Wärme aktivierte Reduktion eines Silbersalzes einer organischen Säure, in Gegenwart eines lichtempfindlichen Reduktionsmittels, welches Kopiermaterial in mindestens einer Schicht ein Silbersalz einer organischen Säure und ein lichtbeständiges Reduktionsmittel für das Silberion enthält.The invention relates to an image-receiving material for the production of photographic copies in a dry way, which contains a light-insensitive silver salt. In particular, the invention relates to a thermo-photographic copying material for producing copies by, by means of heat-activated reduction of a silver salt of an organic acid, in the presence of a light-sensitive reducing agent, which copying material contains in at least one layer a silver salt of an organic acid and a light-resistant reducing agent for the silver ion.
Die lichtempfindliche, reduzierende organische Verbindung wird zunächst durch Licht inaktiv und nicht überträgbar gemacht, indem man bildmässig in Gegenwart einer Verbindung belichtet, die zur Inaktivierung der reduzierenden Verbindung beiträgt. Die in den unbelIchteten oder weniger stark belichteten Stellen noch verbleibende, reduzierende Verbindung wird dann durch Wärme auf die Eildempfangsschicht mit. dem Silbersalz einer organischen Säure und dem lichtbeständigen Reduktionsmittel für das Silberion übertragen, auf der die Farbbildung zustande kommt.The photosensitive, reducing organic compound is first made inactive and non-transferable by light by exposing imagewise in the presence of a compound which contributes to inactivating the reducing compound. The reducing compound still remaining in the unexposed or less strongly exposed areas is then transferred to the rapid receiving layer by heat. the silver salt of an organic acid and the light-resistant reducing agent for the silver ion on which the color is formed.
Bei diesem Verfahren werden nur gelbe bis hellbraune Silberbilder von geringem Kontrast erhalten. Es ist deshalb bekannt, dass man um Bilder mit genügender optischer Dichte zu erhalten, der BildempfangsSchicht sogenannte Toner zusetzt, die den Bildton nach braun bis schwarz verschieben.With this method, only yellow to light brown silver images of low contrast are obtained. It is therefore known that in order to obtain images with sufficient optical density, so-called toners are added to the image-receiving layer, which shift the image tone from brown to black.
Derartige Verbindungen sind z.B. 1 (2H)-Phtala zinon, Barbitursäure, Saccharin und 2-Mercaptobenzoxazol. Wobei vorzugsweise 1 (2H)-Phtalazinon eingesetzt wird, dadiese Bilder eine tiefschwarze Farbe aufweisen.Such connections are e.g. 1 (2H) -phala zinone, barbituric acid, saccharin and 2-mercaptobenzoxazole. 1 (2H) phthalazinone is preferably used, since these images have a deep black color.
Durch den Zusatz dieser Toner wird jedoch das Bildempfangsmaterial empfindlicher gemacht, so dass der Grund
der Kopie ebenfalls eine leichte Schwärzung erleidet. Gewünscht wird aber ein schwarzes Bild auf weissem Grund.However, by adding these toners, the image-receiving material is made more sensitive, so the reason the copy also suffers from a slight blackening. However, a black image on a white background is desired.
Der Erfindung liegt nun die Aufgabe zu Grunde, das Bildempfangsmaterial so zu stabilisieren, dass an den unkopierten Stellen der Grund weiss bleibt, das Bild jedoch immer noch tief schwarz erscheint.The invention is based on the object of stabilizing the image-receiving material in such a way that the background remains white at the uncopied areas, but the image still appears deep black.
Es wurde nun gefunden, dass die Zugabe eines geeigneten Oxidationsmittels die Reduktion des Silbers an den unerwünschten Stellen verhindert, jedoch das Bild und die Bilddiehte nicht beeinflusst.It has now been found that the addition of a suitable oxidizing agent prevents the reduction of the silver at the undesired points, but does not affect the image and the image.
Als besonders geeignet haben sich organische Dihydroperoxide erwiesen, vorzugsweise 2,5-Dimethylhexan 2,5 dihydroperoxid.Organic dihydroperoxides have proven to be particularly suitable, preferably 2,5-dimethylhexane 2,5 dihydroperoxide.
Die Oxidationsmittel können den Schichten in verschiedenen Mengen zugesetzt werden. Die optimale Menge hängt von dem gewünschten Effekt und der Schichtzusammensetzung ab. Im Allgemeinen haben sich Zusätze von 0,1-10 Mol vorzugsweise 0,5-5 Mol pro Mol Toner als am wirksamsten erwiesen.The oxidizing agents can be added to the layers in various amounts. The optimal amount depends on the desired effect and the layer composition. Generally, additions of 0.1-10 moles, preferably 0.5-5 moles, per mole of toner have been found to be most effective.
Die Oxidationsmittel können in Kombination mit den, für das jeweilige Wärmeentwicklungsverfahren bekannten Materialien und Verbindungen, z.B. Reduktionsmitteln, Bindemitteln, Silbersalzen und sonstigen Schwermetallsalzen, Weis pigmenten und Stabilisatoren angewandt werden.The oxidizing agents can be used in combination with the materials and compounds known for the respective heat development process, e.g. Reducing agents, binders, silver salts and other heavy metal salts, white pigments and stabilizers are used.
Als bevorzugt brauchbar haben sich Silberverbindungen erwiesen, die unter den Bedingungen des Verfahrens weitgehend lichtunempfindlich sind, z.B. die in der englischen Patentschrift GB P 1.111.492 beschriebenen Silbersalze von aliphatischen Carbonsäuren mit einer Thioäthergruppierung oder Silbersalze von langkettigen Fettsäuren wie Silberbehenat, Silberplamitat, Silberstearat.Silver compounds which have largely proven to be insensitive to light under the conditions of the process, e.g. the silver salts of aliphatic carboxylic acids with a thioether group or silver salts of long-chain fatty acids such as silver behenate, silver plaatitation, silver stearate described in the British patent GB P 1,111,492.
Die Verwendung von Silberbehenat und Silberste rat ist vorzuziehen, da sie zusammen mit freier Behensäure, bzw. Stearinsäure, die Feuchtigkeitsbeständigkeit der Bildempfangsschicht erhöhen.
Zu reduzierenden Verbindungen, die sich zur thermisch initiierten Reduktion dieser Silbersalze als geeignet erwiesen haben, gehören z.B. Pyrogallol, 4-3tearoyl- pyrogallol, Galloacetophenon, Di-tert.-butyl-pyrogallol, Butylgallat, Dodecylgallat, Gallussäure, Ammoniumgallat, 2,5-Dihydroxy-benzoesäure,
- und ß -Naphthole, 1-Hydroxy- naphthoesäure-(2), Phloroglucinol, Brenzcatechin, Hydro- chinon, 1-Phenyl-pyrazolidin-3-on, 4,4'-Dihydroxybiphenyl, 1-Hydroxy-4-methoxy-naphthalin, 1-Hydroxy-4-methoxy-dihydro- naphthalin, o- und p-Phenylendiamin und AcetoacetonitrilDerivate, z.B. gemäss US-Patentschrift 3 619 239 oder deutscher Offenlegungschrift 2 010 837.The use of silver behenate and silver steate is preferable because, together with free behenic acid or stearic acid, they increase the moisture resistance of the image-receiving layer. Reducing compounds which have proven suitable for the thermally initiated reduction of these silver salts include, for example, pyrogallol, 4-3tearoyl-pyrogallol, galloacetophenone, di-tert-butyl-pyrogallol, butyl gallate, dodecyl gallate, gallic acid, ammonium gallate, 2.5- Dihydroxy-benzoic acid, - And ß-naphthols, 1-hydroxy-naphthoic acid (2), phloroglucinol, catechol, hydroquinone, 1-phenyl-pyrazolidin-3-one, 4,4'-dihydroxybiphenyl, 1-hydroxy-4-methoxy-naphthalene , 1-Hydroxy-4-methoxy-dihydronaphthalene, o- and p-phenylenediamine and acetoacetonitrile derivatives, for example according to US Pat. No. 3,619,239 or German Offenlegungsschrift 2,010,837.
Andere Reduktionsmittel, die sich zur Verwendung bei höherer Temperatur eignen, sind Pyrazolin-5-on- Verbindungen mit zumindest einem Wasserstoffatom in der 4- Steilung. Geeignete Verbindungen der letztgenannten Art sind in der deutschen Offenlegungsschrift 2 117 053 beschrieben.Other reducing agents that are suitable for use at higher temperatures are pyrazolin-5-one compounds with at least one hydrogen atom in the 4-position. Suitable compounds of the latter type are described in German Offenlegungsschrift 2 117 053.
Wie aus der vorstehenden Aufzählung zu ersehen ist, handelt es sich bei diesen reduzierenden Verbindungen um organische Verbindungen, bei denen ein aktives Wasserstoffatom an ein Kohlenstoff-, Sauerstoff- oder Stickstoffatom gebunden ist, das seinerseits an ein Atom eines aromatischen oder heterocyclischen Ringes gebunden oder im Falle des Stickstoffatoms auch Bestandteil eines heterocyclischen Ringes sein kann.As can be seen from the above list, these reducing compounds are organic compounds in which an active hydrogen atom is bonded to a carbon, oxygen or nitrogen atom, which in turn is bonded to an atom of an aromatic or heterocyclic ring or in If the nitrogen atom can also be part of a heterocyclic ring.
Verbindungen, die zur Photo-Desaktivierung dieser reduzierenden Verbindungen beitragen können, sind z.B. in der britischen Patentschrift 1 002 350 beschrieben. Besonders gut geeignet sind halogenhaltige Fluoreszein-Farbstoffe, wie z.B. Erythrosin und die in den deutschen Patentanmeldung P 20 42 054.6, 20 42 531.4, 20 42 663.5 und 21.06 577.0 beschriebenen Farbstoffe.Compounds that can contribute to the photo-deactivation of these reducing compounds are e.g. in British Patent 1 002 350. Halogen-containing fluorescein dyes, such as Erythrosine and the dyes described in German patent applications P 20 42 054.6, 20 42 531.4, 20 42 663.5 and 21.06 577.0.
Zusätzlich zu den oben angegebenen Reduktionsmitteln können Verbindungen zur Anwendung kommen, die als Hilfs-Reduktionsmittel wirken.
Beispiele für derartige Verbindungen sind Phenole mit sterischer Hinderung, die beim Erhitzen aktiv an der Reduktionsreaktion teilnehmen, wie 2,6-Di-tert.-butyl- 4-methyl-phenol oder 2,6-Dicyclohexyl-p-cresol.In addition to the reducing agents mentioned above, compounds which act as auxiliary reducing agents can be used. Examples of such compounds are phenols with steric hindrance which actively participate in the reduction reaction when heated, such as 2,6-di-tert-butyl-4-methylphenol or 2,6-dicyclohexyl-p-cresol.
Ferner kann der Bildton und die Bilddichte de Bildempfangsmaterials durch bestimmte Metallsalze, z.B. Blei II-Stearat verbessert werden. Derartige Metallionen-Bildverstärker und ihre Anwendung sind in der deutschen Auslegeschrift 1 572 209 beschrieben.Furthermore, the image tone and the image density of the image-receiving material can be influenced by certain metal salts, e.g. Lead II stearate can be improved. Such metal ion image intensifiers and their use are described in German Patent Specification 1,572,209.
Als Bindemittel für die lichtempfindliche Schicht bzw. für die Bildempfangsschicht sind die üblichen natürlichen oder synthetischen filmbildenden Polymeren geeignet, z.B. Proteine, insbesondere Gelatine, Cellulosederivate, insbesondere Celluloseäther, Celluloseester oder Carboxymethylcellulose, Alginsäure und Derivate davon, Stärkeäther oder Gallactomannan, ferner Polyvinylalkohol, Polyvinylpyrrolidon, Polyvinylchlorid, Copolymerisate von Vinylchlorid und Vinylacetat, Polyvinylacetat oder ganz oder teilweise verseiftes Polyvinylacetat bzw. Copolymerisate von Vinylacetat, Mischpolymerisate des Acrylnitrils und Acrylamids, Polyacrylsäureester, Polymethacrylsäureester, Polyäthylen u.a.The usual natural or synthetic film-forming polymers are suitable as binders for the light-sensitive layer or for the image-receiving layer, e.g. Proteins, in particular gelatin, cellulose derivatives, in particular cellulose ethers, cellulose esters or carboxymethyl cellulose, alginic acid and derivatives thereof, starch ether or gallactomannan, furthermore polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl chloride, copolymers of vinyl chloride and vinyl acetate, polyvinyl acetate or wholly or partly saponified polyvinyl acetate vinyl acetate or copolymer of acrylonitrile and acrylamide, polyacrylic acid esters, polymethacrylic acid esters, polyethylene and others
Die Schichten können als selbsttragende Schich ten angewendet werden oder auf einen Schichtträger aufgetragen werden. Geeignete Schichtträger sind z.B. Papier, ins besondere barytiertes oder kaschiertes Papier, Celluloseester, z.B. Cellulosetriacetat, Polyester, insbesondere auf der Basis von Aethylenterephthalat, Glas usw.The layers can be used as self-supporting layers or applied to a layer support. Suitable supports are e.g. Paper, especially baryta or laminated paper, cellulose esters, e.g. Cellulose triacetate, polyester, in particular based on ethylene terephthalate, glass, etc.
Bei der Auswahl der Bindemittel für die lichtempfindliche Schicht und die Bildempfangsschicht ist darauf zu achten, dass in der Wärme die Schichten nicht kleben. Diese Schwierigkeiten sind jedoch von anderen bekannten Verfahren, z.B. dem Silbersalzdiffusionsverfahren oder Wärmeεntwicklungs verfahren, bekannt und unter Ausnutzung der Erfahrung auf diesen bekannten Gebieten ohne weiteres zu lösen.
Die Schichten können auch Weisspigmente, wie Zinkoxyd, Siliciumdioxyd oder Titandioxyd als Füllstoffe, zur Verbesserung der Weissen und zur Beeinflussung der Klebeeignung der Schichten enthalten. Derartige Schichten sind in den US-Patentschriften 3074 809 und 3107 174 beschrieben.When selecting the binders for the light-sensitive layer and the image-receiving layer, care must be taken to ensure that the layers do not stick in the heat. However, these difficulties are known from other known processes, for example the silver salt diffusion process or heat development process, and can be easily solved using the experience in these known fields. The layers can also contain white pigments, such as zinc oxide, silicon dioxide or titanium dioxide as fillers, to improve the whiteness and to influence the adhesiveness of the layers. Such layers are described in U.S. Patents 3,074,809 and 3,107,174.
In Abwesenheit eines Bindemittels können die Reaktionsteilnehmer auch in eine faserige Bahn eingebracht werden. Um angestrebte Spezialeffekte zu erhalten, können Pigmente, Füllstoffe, schmelzbare Substanzen, wie z.B. Wachse, Farbstoffe und verschiedene andere Zusätze einverleibt werden.In the absence of a binder, the reactants can also be placed in a fibrous web. To obtain the desired special effects, pigments, fillers, fusible substances such as Waxes, dyes and various other additives can be incorporated.
Das Silbersalz und der Toner werden vorzugsweise vor dem Vergiessen miteinander vermischt. Sie können jedoch auch getrennt in benachbarten Schichten aufgebracht werden, aus denen der Toner - z.B. beim Erhitzen der Trägerfolie - zum Metallsalz diffundieren kann. Zur Belichtung der lichtempfindlichen Schichten können die in der Reproduktionstechnik üblichen Lichtquellen, wie Halogenlampen, Jodquarzlampen oder Glühlampen verwendet werden. Die spektrale Empfindlichkeit des lichtempfindlichen Materials hängt von der Natur der verwendeten Sensibilisatorfarbstoffe ab.The silver salt and the toner are preferably mixed together before pouring. However, they can also be applied separately in adjacent layers from which the toner - e.g. when heating the carrier film - can diffuse to the metal salt. The light sources customary in reproduction technology, such as halogen lamps, iodine quartz lamps or incandescent lamps, can be used to expose the light-sensitive layers. The spectral sensitivity of the light-sensitive material depends on the nature of the sensitizer dyes used.
Die Ueberführung der bilderzeugenden Verbindungen von den unbelichteten Stellen der lichtempfindlichen Schichten in die BildempfangsSchicht geschieht in der Wärme bei Temperaturen zwischen 80 und 200°C. Die Erwärmung kann erfolgen z.B. durch Führung der belichteten lichtempfindlichen Schicht in Kontakt mit der Bildempfangsschicht über heisse Platten oder Walzen oder auch durch Bestrahlung mit UR-Licht. Die günstigste Temperatur und Erwärmungszeit hängt selbstverständlich von der Natur der bilderzeugenden Verbindung bzw. der Zusammensetzung des lichtunempfindlichen silbersalzhaltigen Kopiermaterials ab; sie kann durch wenige einfache Versuche ermittelt werden.
BeispielThe transfer of the image-forming compounds from the unexposed areas of the light-sensitive layers into the image-receiving layer takes place in the heat at temperatures between 80 and 200 ° C. The heating can take place, for example, by guiding the exposed light-sensitive layer in contact with the image-receiving layer over hot plates or rollers or by irradiation with UR light. The most favorable temperature and heating time of course depend on the nature of the image-forming compound or the composition of the light-insensitive silver salt-containing copying material; it can be determined by a few simple experiments. example
A . Herstellung des lichtempfindlichen MaterialsA. Production of the photosensitive material
Ein Transparentpapier wird in einer Menge von 25 g/m2 mit der folgenden Mischung beschichtetA transparent paper is coated in an amount of 25 g / m 2 with the following mixture
(p-Chlorphenyl)-acetoacetonitrile 1, 0 g(p-Chlorophenyl) acetoacetonitrile 1.0 g
Erythrosin 440 mgErythrosin 440 mg
Aethylce-Llulose 50, 0 gAethylce-Llulose 50.0 g
Methyläthylketon 500 g anschliessend wie üblich trocknenThen dry methyl ethyl ketone 500 g as usual
B. Herstellung des BildempfangsmaterialsB. Preparation of Image Receiving Material
Aethylacetat 40 gEthyl acetate 40 g
Stearinsäure 4 g Silberstearat 5 gStearic acid 4 g silver stearate 5 g
Polyäthylacrylat 5 g Phtalazinon 1 gPolyethyl acrylate 5 g phthalazinone 1 g
Diese Mischung wird 24 h in einer Kugelmühle gemahlen. Zu dieser gemahlenen Masse werden vor dem Vergiessen zugegebenThis mixture is ground in a ball mill for 24 h. To this ground mass are added before pouring
Aceton 20 gAcetone 20 g
2,6-Di-cyclohexyl-p-Kresol 1 g2,6-di-cyclohexyl-p-cresol 1 g
Die gebrauchsfertige Mischung wird dann in einer Menge von 150 g/m2 auf einen Papierträger gegossen und getrocknet.The ready-to-use mixture is then poured onto a paper support in an amount of 150 g / m 2 and dried.
Verarbeitung : Die lichtempfindliche Schicht wird bild mässig belichtet. Die Belichtung dauert 30 Sekunden und wird mit einer Wolframfadenlampe von 1500 Watt durchgeführt, die in einem Abstand von 5 cm vom lichtempfindlichen Material angebracht ist.Processing: The photosensitive layer is exposed to light. The exposure lasts 30 seconds and is carried out with a tungsten filament lamp of 1500 watts, which is attached at a distance of 5 cm from the light-sensitive material.
Anschliessend wird die belichtete Schicht bei 125°C 5
Sek. lang mit der Bildempfangsschicht in Kontakt gebracht. Es werden tief schwarze Bilder mit Hoher Dichte erhalten, wobei jedoch der Grund grau-schwarz punkiert ist.The exposed layer is then 5 at 125 ° C. 5 Brought into contact with the image-receiving layer for seconds. Deep black images with high density are obtained, although the background is dotted gray-black.
Falls man wie oben verfährt, jedoch vor dem Vergiessen 1,5 g 2,5-Dimethylhexan-2,5-dihydroperoxid zugibt, erhält man ebenfalls ein tief schwarzes Bild, jedoch auf weissem Grund.
If the procedure is as above, but 1.5 g of 2,5-dimethylhexane-2,5-dihydroperoxide is added before casting, a deep black image is also obtained, but on a white background.
Claims
1. Bildempfangsmaterial für die Herstellung von photographischen Kopien auf trockenem Wege mit einer Schicht, die ein lichtunempfindliches Silbersalz enthält, dadurch ge kennzeichnet, dass diese Schicht ein Oxidationsmittel enthält.1. Image receiving material for the production of photographic copies in a dry way with a layer containing a light-insensitive silver salt, characterized in that this layer contains an oxidizing agent.
2. Material nach Anspruch 1, dadurch gekennzeichnet, dass das Oxidationsmittel ein organisches Peroxid ist.2. Material according to claim 1, characterized in that the oxidizing agent is an organic peroxide.
3. Material nach Anspruch 2, dadurch gekennzeichnet, dass es 2,5-Dimethylhexan-2,5-dihydroperoxid enthält. 3. Material according to claim 2, characterized in that it contains 2,5-dimethylhexane-2,5-dihydroperoxide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU63353/80A AU6335380A (en) | 1979-09-28 | 1980-09-26 | Material for obtaining photographic prints by dry process |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH872479 | 1979-09-28 | ||
CH8724/79 | 1979-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1981000922A1 true WO1981000922A1 (en) | 1981-04-02 |
Family
ID=4343995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH1980/000113 WO1981000922A1 (en) | 1979-09-28 | 1980-09-26 | Material for obtaining photographic prints by dry process |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0039338A1 (en) |
WO (1) | WO1981000922A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0486246A1 (en) * | 1990-11-14 | 1992-05-20 | Canon Kabushiki Kaisha | Heat-developable photosensitive material |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3798039A (en) * | 1972-03-08 | 1974-03-19 | Nashua Corp | Copy sheet containing silver soap and an organic peroxygen oxidizing compound |
DE2500508A1 (en) * | 1974-01-08 | 1975-11-20 | Fuji Photo Film Co Ltd | HEAT DEVELOPMENT LIGHT SENSITIVE MATERIAL |
DE2547723A1 (en) * | 1974-10-24 | 1976-04-29 | Fuji Photo Film Co Ltd | PROCESS FOR PRODUCING THERMALLY DEVELOPABLE, LIGHT SENSITIVE MIXTURES |
GB1455271A (en) * | 1973-04-19 | 1976-11-10 | Kodak Ltd | Heat-processable-radiation sensitive material |
-
1980
- 1980-09-26 WO PCT/CH1980/000113 patent/WO1981000922A1/en unknown
- 1980-09-26 EP EP19800901790 patent/EP0039338A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3798039A (en) * | 1972-03-08 | 1974-03-19 | Nashua Corp | Copy sheet containing silver soap and an organic peroxygen oxidizing compound |
GB1455271A (en) * | 1973-04-19 | 1976-11-10 | Kodak Ltd | Heat-processable-radiation sensitive material |
DE2500508A1 (en) * | 1974-01-08 | 1975-11-20 | Fuji Photo Film Co Ltd | HEAT DEVELOPMENT LIGHT SENSITIVE MATERIAL |
DE2547723A1 (en) * | 1974-10-24 | 1976-04-29 | Fuji Photo Film Co Ltd | PROCESS FOR PRODUCING THERMALLY DEVELOPABLE, LIGHT SENSITIVE MIXTURES |
Non-Patent Citations (1)
Title |
---|
CHEMICAL ABSTRACTS, Band 88, Nr. 6, 06. Februar 1978 (Columbus, Ohio, US), V. MORITO et al. "Photothermographic materials", siehe Seiten 407-408, Zusammenfassung Nr. 43751c, JP, A, 7793319, veroffentlicht am 05. August 1977, siehe Seite 127, Verbindung 7 Konishiroku Photo Industry. * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0486246A1 (en) * | 1990-11-14 | 1992-05-20 | Canon Kabushiki Kaisha | Heat-developable photosensitive material |
US5258281A (en) * | 1990-11-14 | 1993-11-02 | Canon Kabushiki Kaisha | Heat-developable photosensitive material |
Also Published As
Publication number | Publication date |
---|---|
EP0039338A1 (en) | 1981-11-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4123282A (en) | Photothermographic toners | |
DE2506815C3 (en) | Photothermographic recording material | |
DE2220597C3 (en) | Thermophotographic recording material | |
DE1572203A1 (en) | Copy sheet and method of making the same | |
DE1547871A1 (en) | Thermally developable photosensitive element | |
DE2302462B2 (en) | Thermophotographic recording material | |
DE2020939B2 (en) | Photographic recording material | |
DE2536887A1 (en) | THERMALLY DEVELOPABLE, LIGHT-SENSITIVE RECORDING MATERIALS | |
DE2205263A1 (en) | Stabilization of dry silver layers | |
DE2251554A1 (en) | LIGHT STABLE PHOTOGRAPHIC RECORDING MATERIAL AND METHOD OF MANUFACTURING THEREOF | |
DE2531640A1 (en) | LIGHT SENSITIVE RECORDING MATERIALS DEVELOPED BY THE EFFECT OF HEAT | |
DE2300344A1 (en) | COLOR FORMING DRY PHOTOGRAPHIC SHEETS | |
DE2521989A1 (en) | HEAT DEVELOPMENT LIGHT SENSITIVE MATERIAL | |
WO1981000922A1 (en) | Material for obtaining photographic prints by dry process | |
DE2321329A1 (en) | IMPROVED IMAGE RECEIVING MATERIAL | |
US3409438A (en) | Photosensitive heat developable copysheet | |
EP0038802A1 (en) | Material for obtaining photographic prints by dry process | |
WO1981000919A1 (en) | Material for obtaining photographic prints by dry process | |
EP0039337A1 (en) | Material for obtaining photographic prints by dry process | |
DE2141063A1 (en) | IMPROVED PHOTOGRAPHIC MATERIAL | |
DE2220618C2 (en) | Image receiving material | |
DE2023629A1 (en) | Photographic dry copying process | |
DE2140406A1 (en) | IMPROVED PHOTOGRAPHIC MATERIAL | |
US3515559A (en) | Dry process proof sheet composition | |
US4038083A (en) | Photothermographic recording sheet |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Designated state(s): AU BR JP SU US |
|
AL | Designated countries for regional patents |
Designated state(s): AT CH DE FR GB LU NL SE |