CA1064309A - Diazotype a deux composants avec couche exterieure de resine - Google Patents
Diazotype a deux composants avec couche exterieure de resineInfo
- Publication number
- CA1064309A CA1064309A CA233,293A CA233293A CA1064309A CA 1064309 A CA1064309 A CA 1064309A CA 233293 A CA233293 A CA 233293A CA 1064309 A CA1064309 A CA 1064309A
- Authority
- CA
- Canada
- Prior art keywords
- diazotype
- resin
- material according
- diazotype material
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 30
- 239000011347 resin Substances 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 64
- 230000001235 sensitizing effect Effects 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 229920003180 amino resin Polymers 0.000 claims abstract description 9
- 239000003822 epoxy resin Substances 0.000 claims abstract description 9
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 13
- 125000000664 diazo group Chemical class [N-]=[N+]=[*] 0.000 claims description 13
- 239000004922 lacquer Substances 0.000 claims description 11
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 8
- 229920002301 cellulose acetate Polymers 0.000 claims description 8
- 229920000728 polyester Polymers 0.000 claims description 8
- 150000001299 aldehydes Chemical class 0.000 claims description 7
- 150000008049 diazo compounds Chemical class 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- -1 amino compound Chemical class 0.000 claims description 6
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N butyric aldehyde Natural products CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 6
- 238000006149 azo coupling reaction Methods 0.000 claims description 5
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 5
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 claims description 4
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 4
- 239000007795 chemical reaction product Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 238000010424 printmaking Methods 0.000 claims description 4
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 239000004634 thermosetting polymer Substances 0.000 claims description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 claims description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 2
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 2
- 231100000202 sensitizing Toxicity 0.000 abstract description 17
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000654 additive Substances 0.000 description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000008199 coating composition Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 150000001989 diazonium salts Chemical class 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- OJGMBLNIHDZDGS-UHFFFAOYSA-N N-Ethylaniline Chemical compound CCNC1=CC=CC=C1 OJGMBLNIHDZDGS-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- YKYOUMDCQGMQQO-UHFFFAOYSA-L cadmium dichloride Chemical compound Cl[Cd]Cl YKYOUMDCQGMQQO-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012954 diazonium Substances 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 229920003986 novolac Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 239000011592 zinc chloride Substances 0.000 description 2
- 235000005074 zinc chloride Nutrition 0.000 description 2
- NJLLALPCADBTIS-UHFFFAOYSA-N 2,5-dibutoxy-4-morpholin-4-ylbenzenediazonium Chemical compound C1=C([N+]#N)C(OCCCC)=CC(N2CCOCC2)=C1OCCCC NJLLALPCADBTIS-UHFFFAOYSA-N 0.000 description 1
- WFXLRLQSHRNHCE-UHFFFAOYSA-N 2-(4-amino-n-ethylanilino)ethanol Chemical compound OCCN(CC)C1=CC=C(N)C=C1 WFXLRLQSHRNHCE-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- WXHLLJAMBQLULT-UHFFFAOYSA-N 2-[[6-[4-(2-hydroxyethyl)piperazin-1-yl]-2-methylpyrimidin-4-yl]amino]-n-(2-methyl-6-sulfanylphenyl)-1,3-thiazole-5-carboxamide;hydrate Chemical compound O.C=1C(N2CCN(CCO)CC2)=NC(C)=NC=1NC(S1)=NC=C1C(=O)NC1=C(C)C=CC=C1S WXHLLJAMBQLULT-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- RGCITEKHKXPDDH-UHFFFAOYSA-N 4-(diethylamino)benzenediazonium Chemical compound CCN(CC)C1=CC=C([N+]#N)C=C1 RGCITEKHKXPDDH-UHFFFAOYSA-N 0.000 description 1
- PHNDZBFLOPIMSM-UHFFFAOYSA-N 4-morpholin-4-ylaniline Chemical compound C1=CC(N)=CC=C1N1CCOCC1 PHNDZBFLOPIMSM-UHFFFAOYSA-N 0.000 description 1
- QNGVNLMMEQUVQK-UHFFFAOYSA-N 4-n,4-n-diethylbenzene-1,4-diamine Chemical compound CCN(CC)C1=CC=C(N)C=C1 QNGVNLMMEQUVQK-UHFFFAOYSA-N 0.000 description 1
- GZVHEAJQGPRDLQ-UHFFFAOYSA-N 6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 GZVHEAJQGPRDLQ-UHFFFAOYSA-N 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 229920008347 Cellulose acetate propionate Polymers 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001756 Polyvinyl chloride acetate Polymers 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- UGZICOVULPINFH-UHFFFAOYSA-N acetic acid;butanoic acid Chemical compound CC(O)=O.CCCC(O)=O UGZICOVULPINFH-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000008043 acidic salts Chemical class 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229920000402 bisphenol A polycarbonate polymer Polymers 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229920006217 cellulose acetate butyrate Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000006193 diazotization reaction Methods 0.000 description 1
- GGSUCNLOZRCGPQ-UHFFFAOYSA-N diethylaniline Chemical compound CCN(CC)C1=CC=CC=C1 GGSUCNLOZRCGPQ-UHFFFAOYSA-N 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical class C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- YAMHXTCMCPHKLN-UHFFFAOYSA-N imidazolidin-2-one Chemical compound O=C1NCCN1 YAMHXTCMCPHKLN-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 229920001169 thermoplastic Polymers 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
- G03C1/52—Compositions containing diazo compounds as photosensitive substances
- G03C1/60—Compositions containing diazo compounds as photosensitive substances with macromolecular additives
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52492374A | 1974-11-18 | 1974-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1064309A true CA1064309A (fr) | 1979-10-16 |
Family
ID=24091200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA233,293A Expired CA1064309A (fr) | 1974-11-18 | 1975-08-12 | Diazotype a deux composants avec couche exterieure de resine |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5168223A (fr) |
| BE (1) | BE835645A (fr) |
| CA (1) | CA1064309A (fr) |
| CH (1) | CH613786A5 (fr) |
| DE (1) | DE2541469A1 (fr) |
| FR (1) | FR2291526A1 (fr) |
| GB (1) | GB1526812A (fr) |
| NL (1) | NL7513438A (fr) |
-
1975
- 1975-08-12 CA CA233,293A patent/CA1064309A/fr not_active Expired
- 1975-09-09 GB GB3708775A patent/GB1526812A/en not_active Expired
- 1975-09-17 DE DE19752541469 patent/DE2541469A1/de not_active Withdrawn
- 1975-10-06 CH CH1296975A patent/CH613786A5/xx not_active IP Right Cessation
- 1975-10-24 JP JP12827175A patent/JPS5168223A/ja active Pending
- 1975-11-14 FR FR7534809A patent/FR2291526A1/fr not_active Withdrawn
- 1975-11-17 BE BE161931A patent/BE835645A/fr unknown
- 1975-11-18 NL NL7513438A patent/NL7513438A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| CH613786A5 (en) | 1979-10-15 |
| NL7513438A (nl) | 1976-05-20 |
| GB1526812A (en) | 1978-10-04 |
| FR2291526A1 (fr) | 1976-06-11 |
| JPS5168223A (ja) | 1976-06-12 |
| BE835645A (fr) | 1976-05-17 |
| DE2541469A1 (de) | 1976-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2501874A (en) | Photographic diazo-sensitized glassine paper | |
| US3102811A (en) | Process for producing images, using light sensitive aromatic 1,2-dialdehydes and elements therefor | |
| US3224878A (en) | Thermographic diazotype reproduction material, method of making and method of using | |
| CA1064309A (fr) | Diazotype a deux composants avec couche exterieure de resine | |
| US3661591A (en) | Diazotype materials | |
| EP0080241B1 (fr) | Matériau diazotype | |
| EP0002323B1 (fr) | Matériaux d'enregistrement vésiculaire | |
| US2873207A (en) | Diazotype reproduction material and method | |
| US4403028A (en) | Light sensitive diazonium salts and diazotype materials | |
| US2536989A (en) | Diazotype layers containing resorcinol derivatives | |
| US4131468A (en) | Diazotype materials | |
| US4152156A (en) | Duplication-proof photographic film | |
| US4088492A (en) | Diazotype materials with hydroxypropyl cellulose ether as anti-slip material | |
| US3754916A (en) | Heat developable diazo type sheets | |
| US3679413A (en) | Photographic process which produces neutral dye image in diazotype material | |
| US2162456A (en) | Photographic printing material | |
| US3836369A (en) | Diazo photosensitive composition | |
| US2542566A (en) | 2, 2', 4, 4'-tetrahydroxybiphenyl coupling component for diazotype layers | |
| US3113865A (en) | Heat developable diazo sulfones | |
| US3915709A (en) | Backwetting coating for diazo microfilm | |
| US3191030A (en) | Process of making and using thermographic reproduction paper | |
| US4108664A (en) | Light-sensitive negative-working film containing a diazo oxide sensitizer and a p-toluenesulfonyl halide or a 2,4-dihalo-S-triazine | |
| US2437868A (en) | Diazotype layers containing resorcinol monoesters | |
| US3485631A (en) | Vesicular photographic materials | |
| US3694247A (en) | Heat-sensitive copying material |