EP1435298A2 - Toning agents for use in thermographic and photothermographic recording materials - Google Patents
Toning agents for use in thermographic and photothermographic recording materials Download PDFInfo
- Publication number
- EP1435298A2 EP1435298A2 EP03104600A EP03104600A EP1435298A2 EP 1435298 A2 EP1435298 A2 EP 1435298A2 EP 03104600 A EP03104600 A EP 03104600A EP 03104600 A EP03104600 A EP 03104600A EP 1435298 A2 EP1435298 A2 EP 1435298A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- group
- alkyl
- optionally substituted
- heterocyclic
- recording material
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims abstract description 143
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 78
- 229910052709 silver Inorganic materials 0.000 claims abstract description 64
- 239000004332 silver Substances 0.000 claims abstract description 64
- -1 silver halide Chemical class 0.000 claims abstract description 64
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 38
- 125000000623 heterocyclic group Chemical group 0.000 claims abstract description 37
- 125000003118 aryl group Chemical group 0.000 claims abstract description 30
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 27
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 26
- 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 24
- 239000011230 binding agent Substances 0.000 claims abstract description 22
- 125000001072 heteroaryl group Chemical group 0.000 claims abstract description 22
- 125000004429 atom Chemical group 0.000 claims abstract description 17
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 15
- 239000001257 hydrogen Substances 0.000 claims abstract description 15
- 125000000753 cycloalkyl group Chemical group 0.000 claims abstract description 14
- 150000002148 esters Chemical class 0.000 claims abstract description 14
- 125000003342 alkenyl group Chemical group 0.000 claims abstract description 13
- 125000002877 alkyl aryl group Chemical group 0.000 claims abstract description 13
- 125000000304 alkynyl group Chemical group 0.000 claims abstract description 13
- 125000005587 carbonate group Chemical group 0.000 claims abstract description 12
- 125000005843 halogen group Chemical group 0.000 claims abstract description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 125000004433 nitrogen atom Chemical group N* 0.000 claims abstract description 7
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 125000002723 alicyclic group Chemical group 0.000 claims abstract description 6
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 31
- 150000001875 compounds Chemical class 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 19
- UXTZUUVTGMDXNG-UHFFFAOYSA-N 1,2-benzoxazine-3,4-dione Chemical compound C1=CC=C2C(=O)C(=O)NOC2=C1 UXTZUUVTGMDXNG-UHFFFAOYSA-N 0.000 claims description 14
- 238000003384 imaging method Methods 0.000 claims description 13
- 125000003545 alkoxy group Chemical group 0.000 claims description 12
- IJAPPYDYQCXOEF-UHFFFAOYSA-N phthalazin-1(2H)-one Chemical compound C1=CC=C2C(=O)NN=CC2=C1 IJAPPYDYQCXOEF-UHFFFAOYSA-N 0.000 claims description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 8
- 125000001424 substituent group Chemical group 0.000 claims description 8
- 125000002252 acyl group Chemical group 0.000 claims description 7
- 125000000547 substituted alkyl group Chemical group 0.000 claims description 7
- 150000001408 amides Chemical class 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims description 6
- 125000004964 sulfoalkyl group Chemical group 0.000 claims description 6
- 125000004442 acylamino group Chemical group 0.000 claims description 5
- 125000002837 carbocyclic group Chemical group 0.000 claims description 5
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 5
- CCGGDOVGIDSGQN-UHFFFAOYSA-N benzo[f][1,2]benzoxazine-1,2-dione Chemical compound C1=CC=CC2=C(C(C(=O)NO3)=O)C3=CC=C21 CCGGDOVGIDSGQN-UHFFFAOYSA-N 0.000 claims description 4
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 125000005309 thioalkoxy group Chemical group 0.000 claims description 4
- OAYRYNVEFFWSHK-UHFFFAOYSA-N carsalam Chemical compound C1=CC=C2OC(=O)NC(=O)C2=C1 OAYRYNVEFFWSHK-UHFFFAOYSA-N 0.000 claims description 3
- JVNPADFXSNGAAN-UHFFFAOYSA-N 7-butoxy-1,3-benzoxazine-2,4-dione Chemical compound O1C(=O)NC(=O)C=2C1=CC(OCCCC)=CC=2 JVNPADFXSNGAAN-UHFFFAOYSA-N 0.000 claims description 2
- YFURRWKTIKKJEF-UHFFFAOYSA-N 7-methoxy-1,3-benzoxazine-2,4-dione Chemical compound O1C(=O)NC(=O)C=2C1=CC(OC)=CC=2 YFURRWKTIKKJEF-UHFFFAOYSA-N 0.000 claims description 2
- HQUVXRFXGBZDNB-UHFFFAOYSA-N 7-methyl-1,3-benzoxazine-2,4-dione Chemical compound O1C(=O)NC(=O)C=2C1=CC(C)=CC=2 HQUVXRFXGBZDNB-UHFFFAOYSA-N 0.000 claims description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims 2
- 239000000203 mixture Substances 0.000 description 44
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 37
- 239000010410 layer Substances 0.000 description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 32
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 27
- 238000010438 heat treatment Methods 0.000 description 27
- 238000009792 diffusion process Methods 0.000 description 26
- 239000000243 solution Substances 0.000 description 21
- 230000002776 aggregation Effects 0.000 description 19
- 238000004220 aggregation Methods 0.000 description 19
- 239000004615 ingredient Substances 0.000 description 18
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 16
- 238000001035 drying Methods 0.000 description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 15
- 238000001914 filtration Methods 0.000 description 15
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 14
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 14
- 150000003378 silver Chemical class 0.000 description 13
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 12
- 238000011161 development Methods 0.000 description 12
- 238000001931 thermography Methods 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 11
- 229960004132 diethyl ether Drugs 0.000 description 11
- 230000009467 reduction Effects 0.000 description 11
- ISAKRJDGNUQOIC-UHFFFAOYSA-N Uracil Chemical compound O=C1C=CNC(=O)N1 ISAKRJDGNUQOIC-UHFFFAOYSA-N 0.000 description 10
- 239000011241 protective layer Substances 0.000 description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 9
- 125000004432 carbon atom Chemical group C* 0.000 description 9
- 238000001816 cooling Methods 0.000 description 9
- 239000011521 glass Substances 0.000 description 9
- 239000002609 medium Substances 0.000 description 9
- 239000011541 reaction mixture Substances 0.000 description 9
- 239000000523 sample Substances 0.000 description 9
- 230000002195 synergetic effect Effects 0.000 description 9
- OKJPEAGHQZHRQV-UHFFFAOYSA-N Triiodomethane Natural products IC(I)I OKJPEAGHQZHRQV-UHFFFAOYSA-N 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 8
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 description 8
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 6
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 6
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- 238000007639 printing Methods 0.000 description 6
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- 239000003381 stabilizer Substances 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- 239000000454 talc Substances 0.000 description 6
- 229910052623 talc Inorganic materials 0.000 description 6
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 150000008319 1H-pyrimidin-2-ones Chemical class 0.000 description 5
- SDQJTWBNWQABLE-UHFFFAOYSA-N 1h-quinazoline-2,4-dione Chemical compound C1=CC=C2C(=O)NC(=O)NC2=C1 SDQJTWBNWQABLE-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
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- 229920000159 gelatin Polymers 0.000 description 5
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- 150000003839 salts Chemical class 0.000 description 5
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 108010010803 Gelatin Proteins 0.000 description 4
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 4
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 4
- 241001061127 Thione Species 0.000 description 4
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- 229940042795 hydrazides for tuberculosis treatment Drugs 0.000 description 4
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- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 4
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- 238000000039 preparative column chromatography Methods 0.000 description 4
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- AQRYNYUOKMNDDV-UHFFFAOYSA-M silver behenate Chemical compound [Ag+].CCCCCCCCCCCCCCCCCCCCCC([O-])=O AQRYNYUOKMNDDV-UHFFFAOYSA-M 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 125000003107 substituted aryl group Chemical group 0.000 description 4
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- DQXNTSXKIUZJJS-UHFFFAOYSA-N 2,4-dichloro-5-methylpyrimidine Chemical compound CC1=CN=C(Cl)N=C1Cl DQXNTSXKIUZJJS-UHFFFAOYSA-N 0.000 description 2
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- XEWINPXUCNYESQ-UHFFFAOYSA-N 2,4-dimethoxy-6-methylpyrimidine Chemical compound COC1=CC(C)=NC(OC)=N1 XEWINPXUCNYESQ-UHFFFAOYSA-N 0.000 description 2
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- 229910019213 POCl3 Inorganic materials 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
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- ZTHYODDOHIVTJV-UHFFFAOYSA-N Propyl gallate Chemical compound CCCOC(=O)C1=CC(O)=C(O)C(O)=C1 ZTHYODDOHIVTJV-UHFFFAOYSA-N 0.000 description 2
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- JTXUVYOABGUBMX-UHFFFAOYSA-N didodecyl hydrogen phosphate Chemical compound CCCCCCCCCCCCOP(O)(=O)OCCCCCCCCCCCC JTXUVYOABGUBMX-UHFFFAOYSA-N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- BXUKAXFDABMVND-UHFFFAOYSA-L disodium;1,2-dihydroxyethane-1,2-disulfonate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)C(O)C(O)S([O-])(=O)=O BXUKAXFDABMVND-UHFFFAOYSA-L 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- TVACALAUIQMRDF-UHFFFAOYSA-N dodecyl dihydrogen phosphate Chemical group CCCCCCCCCCCCOP(O)(O)=O TVACALAUIQMRDF-UHFFFAOYSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 229940052303 ethers for general anesthesia Drugs 0.000 description 1
- DQYBDCGIPTYXML-UHFFFAOYSA-N ethoxyethane;hydrate Chemical compound O.CCOCC DQYBDCGIPTYXML-UHFFFAOYSA-N 0.000 description 1
- 239000002038 ethyl acetate fraction Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 235000019277 ethyl gallate Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
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- 235000004515 gallic acid Nutrition 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 229920001600 hydrophobic polymer Polymers 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- 229940083747 low-ceiling diuretics xanthine derivative Drugs 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- DZVCFNFOPIZQKX-LTHRDKTGSA-M merocyanine Chemical compound [Na+].O=C1N(CCCC)C(=O)N(CCCC)C(=O)C1=C\C=C\C=C/1N(CCCS([O-])(=O)=O)C2=CC=CC=C2O\1 DZVCFNFOPIZQKX-LTHRDKTGSA-M 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- SMCVPMKCDDNUCQ-UHFFFAOYSA-N methyl 3,3-dimethoxypropanoate Chemical compound COC(OC)CC(=O)OC SMCVPMKCDDNUCQ-UHFFFAOYSA-N 0.000 description 1
- IBKQQKPQRYUGBJ-UHFFFAOYSA-N methyl gallate Natural products CC(=O)C1=CC(O)=C(O)C(O)=C1 IBKQQKPQRYUGBJ-UHFFFAOYSA-N 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 150000002832 nitroso derivatives Chemical class 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical group 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 229940083251 peripheral vasodilators purine derivative Drugs 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- LFSXCDWNBUNEEM-UHFFFAOYSA-N phthalazine Chemical compound C1=NN=CC2=CC=CC=C21 LFSXCDWNBUNEEM-UHFFFAOYSA-N 0.000 description 1
- XKJCHHZQLQNZHY-UHFFFAOYSA-N phthalimide Chemical compound C1=CC=C2C(=O)NC(=O)C2=C1 XKJCHHZQLQNZHY-UHFFFAOYSA-N 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 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
- 238000012805 post-processing Methods 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- GKKCIDNWFBPDBW-UHFFFAOYSA-M potassium cyanate Chemical compound [K]OC#N GKKCIDNWFBPDBW-UHFFFAOYSA-M 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 235000010388 propyl gallate Nutrition 0.000 description 1
- 239000000473 propyl gallate Substances 0.000 description 1
- 229940075579 propyl gallate Drugs 0.000 description 1
- 150000003212 purines Chemical class 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- HBCQSNAFLVXVAY-UHFFFAOYSA-N pyrimidine-2-thiol Chemical compound SC1=NC=CC=N1 HBCQSNAFLVXVAY-UHFFFAOYSA-N 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 1
- ZUNKMNLKJXRCDM-UHFFFAOYSA-N silver bromoiodide Chemical compound [Ag].IBr ZUNKMNLKJXRCDM-UHFFFAOYSA-N 0.000 description 1
- 229940054334 silver cation Drugs 0.000 description 1
- 229940045105 silver iodide Drugs 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- YRSQDSCQMOUOKO-KVVVOXFISA-M silver;(z)-octadec-9-enoate Chemical compound [Ag+].CCCCCCCC\C=C/CCCCCCCC([O-])=O YRSQDSCQMOUOKO-KVVVOXFISA-M 0.000 description 1
- CLDWGXZGFUNWKB-UHFFFAOYSA-M silver;benzoate Chemical compound [Ag+].[O-]C(=O)C1=CC=CC=C1 CLDWGXZGFUNWKB-UHFFFAOYSA-M 0.000 description 1
- LTYHQUJGIQUHMS-UHFFFAOYSA-M silver;hexadecanoate Chemical compound [Ag+].CCCCCCCCCCCCCCCC([O-])=O LTYHQUJGIQUHMS-UHFFFAOYSA-M 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 241000894007 species Species 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
- 239000007858 starting material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 150000003456 sulfonamides Chemical class 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000000479 surface-enhanced Raman spectrum Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- 229940033123 tannic acid Drugs 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- AUHHYELHRWCWEZ-UHFFFAOYSA-N tetrachlorophthalic anhydride Chemical compound ClC1=C(Cl)C(Cl)=C2C(=O)OC(=O)C2=C1Cl AUHHYELHRWCWEZ-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 125000003396 thiol group Chemical class [H]S* 0.000 description 1
- 150000007944 thiolates Chemical group 0.000 description 1
- ZEMGGZBWXRYJHK-UHFFFAOYSA-N thiouracil Chemical compound O=C1C=CNC(=S)N1 ZEMGGZBWXRYJHK-UHFFFAOYSA-N 0.000 description 1
- 229950000329 thiouracil Drugs 0.000 description 1
- 229940113082 thymine Drugs 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000016776 visual perception Effects 0.000 description 1
- 239000003232 water-soluble binding agent 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
- G03C1/4989—Photothermographic systems, e.g. dry silver characterised by a thermal imaging step, with or without exposure to light, e.g. with a thermal head, using a laser
-
- 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
- G03C1/49836—Additives
- G03C1/49845—Active additives, e.g. toners, stabilisers, sensitisers
-
- 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
- G03C2200/00—Details
- G03C2200/40—Mercapto compound
Definitions
- the present invention concerns toning agents for use in thermographic recording materials.
- Thermography is an image-forming process including a heating step and hence includes photothermography in which the image-forming process includes image-wise exposure and direct thermal processes in which the image-forming process includes an image-wise heating step.
- direct thermal printing a visible image pattern is produced by image-wise heating of a recording material.
- US 3,080,254 discloses a typical heat-sensitive copy paper including in the heat-sensitive layer a thermoplastic binder, e.g ethyl cellulose, a water-insoluble silver salt, e.g. silver stearate and an appropriate organic reductor, of which 4-methoxy-1-hydroxy-dihydronaphthalene is a representative.
- a thermoplastic binder e.g ethyl cellulose
- a water-insoluble silver salt e.g. silver stearate
- an appropriate organic reductor of which 4-methoxy-1-hydroxy-dihydronaphthalene is a representative.
- Localized heating of the sheet in the thermographic reproduction process, or for test purposes by momentary contact with a metal test bar heated to a suitable conversion temperature in the range of about 90-150 °C causes a visible change to occur in the heat-sensitive layer.
- the initially white or lightly coloured layer is darkened to a brownish appearance at the heated area.
- thermographic imaging element comprising a substrate having coated on at least one surface thereof a thermographic imaging system comprising at least one layer comprising light-insensitive organic silver salt; reducing agent for silver ion; binder; toner; and a dye which absorbs radiation in the wavelength range of 750-1100 n, wherein said at least one layer comprising said light-insensitive organic silver salt forms an image density greater than about 1.0 when exposed to 0.10 to 2.0 joules/cm 2 of said radiation in 0.20 to 200 microseconds.
- the thermographic imaging system of Examples 2, 3, 5 and 6 contained barbituric acid in association with known toning agents such as phthalazinone and succinimide.
- US 3,893,860 discloses in a photothermographic element comprising a support having thereon (I): (a) photographic silver halide in association with (b) a silver salt of a heterocyclic thione, said heterocyclic thione being represented by the formula: wherein R represents atoms completing a 5-member heterocyclic nucleus and Z is alkylene containing 1 to 30 carbon atoms, (c) an organic reducing agent for said silver salt of a heterocyclic thione, and (d) a polymeric, synthetic binder and contiguous to (I), at least one polymer layer (II), the improvement wherein said polymer (A) comprising at least 50% by weight of a polymer (A) comprising the repeating units represented by the formulas: wherein: R 1 is hydrogen or alkyl containing 1 to 4 carbon atoms; R 2 is an imidazoyl, N-substituted carbamoyl, 2-pyrrolidinyl, acetoacetoxyethoxycarbon
- EP-A 0 921 433 also discloses the use of pyrimidine and asymmetric triazines such as 2,4-dihydroxypyrimidine (uracil), 2-hydroxy-4-amino-pyrimidine and azauracil in the thermographic recording element disclosed therein.
- uracil 2,4-dihydroxypyrimidine
- 2-hydroxy-4-amino-pyrimidine 2-hydroxy-4-amino-pyrimidine
- azauracil in the thermographic recording element disclosed therein.
- thermographic recording element comprising: a support having a pair of opposed surfaces, at least one antistatic layer containing conductive metal oxide particles and at least one thermographic recording layer containing an organic silver salt and a reducing agent on the first surface of the support, and at least two layers on the other surface of the support, wherein the outermost layer of said at least two layers contains a hydrophobic polymer binder and at least one layer of said at least two layers other than said outermost layer contains a matte agent, wherein: said conductive metal oxide particles are acicular particles having a major axis to minor axis ratio of from 3/1 to 50/1, and said thermographic recording element further comprises a nucleating agent.
- US 6,479,227 also discloses the use of 2,4-dimercaptopyrimidine, pyrimidine and asymmetric triazines such as 2,4-dihydroxypyrimidine (uracil), 2-hydroxy-4-amino-pyrimidine, azauracil, 4-hydroxy-2-mercaptopyrimidine, 2-mercaptopyrimidine, 4,6-diamino-2-mercaptopryimidine, and 2-mercapto-4-methylpyrimidine hydrochloride in the thermographic recording element disclosed therein.
- 2,4-dihydroxypyrimidine uracil
- 2-hydroxy-4-amino-pyrimidine azauracil
- 4-hydroxy-2-mercaptopyrimidine 2-mercaptopyrimidine
- 2-mercaptopyrimidine 2,6-diamino-2-mercaptopryimidine
- 2-mercapto-4-methylpyrimidine hydrochloride in the thermographic recording element disclosed therein.
- US 3,951,660 discloses a photographic radiation sensitive recording material having therein a radiation sensitive composition and at least one layer containing dispersed in a binding agent a substantially non-light sensitive silver salt, a reducing agent for the non-light sensitive silver salt, and a toner compound, the improvement which comprises the toner being a heterocyclic toner compound of the following formula: in which X represents O or N-R 5 ; R 1 , R 2 , R 3 or R 4 represent hydrogen, alkyl, cycloalkyl, alkoxy, alkylthio, hydroxy, dialkylamino or halogen, in addition to which R 1 and R 2 or R 2 and R 3 or R 3 and R 4 can represent the ring members required to complete an anellated aromatic ring, and R 5 represents alkyl.
- US 3,951,660 discloses 2,4(1 H ,3 H )-quinazolinedione and various 2,4(1 H ,3 H )-quinazolinedione (benzoyleneurea) derivatives substituted at the nitrogen atom in the 1-position i.e. 2-hydroxy-pyrimidine derivatives annelated at the 5,6 positions with a benzene ring: INVENTION EXAMPLES are disclosed in US 3,951,660 in which the use of compounds 1, 3 and 26 as toning agents in thermographic recording materials is exemplified.
- US-P 3,885,967 discloses a photosensitive material for a thermally developable lightsensitive element which comprises: a) a silver salt component comprising silver laurate or silver caprate, b) a catalytic amount of a photosensitive silver halide component comprising a photosensitive silver halide, or a compound which reacts with silver laurate or silver caprate to form a photosensitive silver halide, c) a reducing agent, d) a binder, and e) a toning agent comprising a compound represented by the formula: wherein R 1 , R 2 , R 3 and R 4 each represents a hydrogen atom, an alkyl group, an aryl group, an acylamido group, a halogen atom, a hydroxyl group or a nitro group.
- thermography comprising both photothermography and substantially light-insensitive thermography are clearly distinct from that of photography.
- Photothermographic and substantially light-insensitive thermographic materials differ significantly from conventional silver halide photographic materials which require processing using aqueous processing solutions.
- thermographic imaging materials In photothermographic and substantially light-insensitive thermographic imaging materials, a visible image is created by heat as a result of the reaction of a developer incorporated within the element. Heat at 50°C or more is essential for this development process and temperatures of over 100°C are routinely required for photothermographic materials and still higher temperatures are routinely required for substantially light-insensitive thermographic materials.
- conventional wet-processed photographic imaging elements require processing in aqueous processing baths to provide a visible image (e.g., developing and fixing baths) and development is usually performed at more moderate temperatures (e.g., 30° to 50°C) to provide a visible image.
- photothermographic elements only a small amount of silver halide is used to capture light and a different sort of silver (e.g., silver behenate) is used to generate the image with heat.
- the silver halide serves as a catalyst for the physical development process involving the non-photosensitive, reducible silver source and the incorporated reducing agent.
- conventional wet-processed black-and-white photographic materials use only one form of silver (i.e. silver halide) that, upon chemical development, is itself converted into the silver image, or upon physical development requires addition of an external silver source (or other reducible metal ions that form black images upon reduction to the corresponding metal).
- photothermographic materials require an amount of silver halide per unit area that is only a fraction of that used (as little as one-hundredth) of that used in a conventional wet-processed photographic material.
- thermothermographic materials all of the "chemistry" for imaging is incorporated within the material itself.
- such materials include a developer (i.e. a reducing agent for the reducible silver ions) while photographic materials usually do not.
- a developer i.e. a reducing agent for the reducible silver ions
- photographic materials usually do not.
- the developer chemistry is physically separated from the photosensitive silver halide until development is desired.
- the incorporation of the developer into substantially light-insensitive thermographic and photothermographic materials can lead to the increased formation of various types of "fog” or other undesirable sensitometric side effects. Therefore, much effort has gone into the preparation and manufacture of substantially light-insensitive thermographic and photothermographic materials to minimize these problems during the preparation of the substantially light-insensitive thermographic and photothermographic dispersions as well as during coating, storage, and post-processing handling.
- the unexposed silver halide generally remains intact after development and the material must be stabilized against further imaging and development.
- silver halide is removed from conventional photographic materials after solution development to prevent further imaging (i.e. in the aqueous fixing step).
- the binder is capable of wide variation and a number of binders (both hydrophilic and hydrophobic) are useful.
- conventional photographic materials are limited almost exclusively to hydrophilic binders such as gelatin.
- thermographic and substantially light-insensitive thermographic elements require thermal processing, they pose different considerations and present distinctly different problems in manufacture and use, compared to conventional wet-processed silver halide photographic materials.
- Additives that have one effect in conventional silver halide photographic materials may behave quite differently when incorporated in substantially light-insensitive thermographic or photothermographic materials where the underlying chemistry is significantly more complex.
- the incorporation of such additives as, for example, stabilizers, antifoggants, speed enhancers, sensitizers, supersensitizers and spectral and chemical sensitizers in conventional photographic materials is not predictive of whether such additives will prove beneficial or detrimental in substantially light-insensitive thermographic or photothermographic materials.
- a photographic antifoggant useful in conventional photographic materials to cause various types of fog when incorporated into substantially light-insensitive thermographic or photothermographic materials, or for supersensitizers that are effective in photographic materials to be inactive in photothermographic materials.
- thermographic materials are described in Imaging Processes and Materials (Neblette's Eighth Edition); J. Sturge et al, Ed; Van Nostrand Rheinhold: New York, 1989; Chapter 9 and in Unconventional Imaging processes; E. Brinckman et al., Ed: The focal Press: London and New York: 1978: pp. 74-75, and in Zou, Sahyun, Levy and Serpone, J. Imaging Sci. Technol. 1996, 40, pp. 94-103.
- thermographic recording materials Differences between substantially light-insensitive thermographic recording materials and photothermographic recording materials
- thermographic materials in which image formation is based on the reduction of organic silver salts is significantly different from that of photothermographic recording materials, despite the fact that in both cases the image results from the reduction of organic silver salts.
- this a superficial similarity masking the fact that the realization of the species which catalyze this reduction is completely different, being image-wise exposure of photosensitive silver halide-containing photo-addressable thermally developable elements in the case of photothermographic recording materials and image-wise heating of thermosensitive elements which do not contain photosensitive silver halide in the case of thermographic recording materials.
- Thermographic and photothermographic materials with prior art toning agents exhibit poor storage properties, as is the case with e.g. phthalazinone, and/or an image colour which has an insufficiently neutral tone for black and white images, as is the case with e.g. succinimide, phthalimide, phthalic acid and phthalazine.
- thermographic materials as disclosed in US-P 3,951,660, represented an improvement in storage properties and in the neutrality of the image tone, whether substituted, as disclosed in US-P 3,885,967 and US-P 3,951,660, or unsubstituted, as disclosed in US-P 3,951,660.
- Such toning agents are insufficiently soluble in ecologically acceptable coating solvents and thermographic materials containing these toning agents exhibit a undesirably strong deterioration in image colour and an undesirable increase in image background (fog) upon storage.
- thermographic materials diffuse through the thermographic materials to the thermal head resulting in cloudiness in the imaging material, deposits of ingredients and by-products from the image-forming process on the surface of the thermographic material and, in the case of substantially light-insensitive thermographic materials in thermal head printers, image degradation due to thermal head contamination.
- thermographic recording materials suitable for use in thermographic printers without adverse effect on the image tone.
- thermographic materials which adsorb particularly rapidly on silver nano-particles as demonstrated by time-resolved SERS measurements and bring about rapid aggregation thereof render the image tone of thermographic materials more neutral in thermographic materials, whose image forming process is based upon the image-wise reduction of substantially light-insensitive organic silver salts, i.e. exhibit so-called toning properties.
- thermographic materials a combination of toning agents both exhibiting rapid adsorption on silver nano-particles and capable of bringing about rapid aggregation thereof, but exhibiting slow and fast diffusion respectively in the particular polymer matrix, exhibit favourable synergistic effects with respect to image tone and diffusion thereof to the surface of the thermographic materials.
- a black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, characterized in that the at least one toning agent is represented by formula (I): wherein R 1 is a hydrogen atom or an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted; R 2 and R 3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonato, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, heterocyclic or heteroaryl group all of which may be optionally substituted; R 2 and R 3
- thermographic material as used in disclosing the present invention includes both photothermographic materials and substantially light-insensitive thermographic materials.
- alkyl means all variants possible for each number of carbon atoms in the alkyl group i.e. for three carbon atoms: n-propyl and isopropyl; for four carbon atoms: n-butyl, isobutyl and tertiary-butyl; for five carbon atoms: n-pentyl, 1,1-dimethylpropyl, 2,2-dimethylpropyl and 2-methyl-butyl etc.
- carbocyclic ring includes both alicylic rings and aromatic rings.
- Substantially light-insensitive means not intentionally light sensitive.
- the L*, a* and b* CIELAB-values are defined in ASTM Norm E179-90 in a R(45/0) geometry with evaluation according to ASTM Norm E308-90 and have been used to characterize the image tone of thermographic materials of the present invention.
- substantially water-free condition means heating at a temperature of 80 to 250°C.
- substantially water-free condition means that the reaction system is approximately in equilibrium with water in the air, and water for inducing or promoting the reaction is not particularly or positively supplied from the exterior to the element. Such a condition is described in T.H. James, "The Theory of the Photographic Process", Fourth Edition, Macmillan 1977, page 374.
- thermosensitive element as used herein is that element which contains all the ingredients which contribute to image formation.
- the thermosensitive element contains one or more substantially light-insensitive organic silver salts, one or more reducing agents therefor in thermal working relationship therewith and a binder.
- the element may comprise a layer system in which the above-mentioned ingredients may be dispersed in different layers, with the proviso that the substantially light-insensitive organic silver salts are in reactive association with the reducing agents i.e. during the thermal development process the reducing agent must be present in such a way that it is able to diffuse to the particles of substantially light-insensitive organic silver salt so that reduction to silver can occur.
- Such materials include the possibility of one or more substantially light-insensitive organic silver salts and/or one of more organic reducing agents therefor being encapsulated in heat-responsive microcapsules, such as disclosed in EP-A 0 736 799 herein incorporated by reference.
- thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, characterized in that the at least one toning agent is a compound represented by formula (I).
- R 1 is an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted.
- the compound according to formula (I) is represented by formula (II): wherein R 1 is a hydrogen atom or an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted; R 2 and R 3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonato, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, heterocyclic or heteroaryl group all of which may be optionally substituted; R 2 and R 3 may together represent the atoms necessary to complete a heteroaromatic ring with no more than one nitrogen atom, an alicyclic ring or a heterocyclic ring which all may be optionally substituted; and with the provis
- the 2-hydroxy-pyrimidine derivative is selected from the group consisting of 2-hydroxy-pyrimidines annelated with a heterocyclic ring, 2-hydroxy-pyrimidine derivatives annelated with a carbocyclic ring including purine derivatives.
- the substituent for R 1 is selected from the group consisting of alkyl, aryl, alkoxy, hydroxy, carboxy, ester, amide, sulfo and sulfoalkyl groups.
- the substituent for R 2 is selected from the group consisting of alkyl, aryl, alkoxy, hydroxy, carboxy, ester, amide, sulfo and sulfoalkyl groups.
- the substituent for R 3 is selected from the group consisting of alkyl, aryl, alkoxy, hydroxy, carboxy, ester, amide, sulfo and sulfoalkyl groups.
- the compound according to formula (I) is selected from the group consisting of: xanthine (2,6-dihydroxy-purine), xanthine derivatives and 2,6,8-trihydroxy-purine (uric acid).
- the compound according to formula (I) is selected from the group consisting of
- Suitable compounds according to formula (I), according to the present invention include:
- the thermosensitive element further contains at least one toning agent selected from the group consisting of compounds according to formula (III), wherein R 5 is an alkyl group optionally substituted with a hydroxy, carboxy, carboxy ester, acyl or carbonato group; X is S, O or N-R 10 ; R 6 is an optionally substituted alkyl group; R 6 , R 7 , R 8 and R 9 independently represent a hydrogen atom, a halogen atom or an alkyl, an alkoxy, a thio-alkoxy, a nitro, a cyano, a carboxy, a carboxy ester, an acyl, an aldehyde, an acylamido, a sulphonamido, an acylamino, a carbonato, a hydroxy or an aryl group or at least one of R 6 and R 7 , R 7 and R 8
- Suitable co-toning agents according to formula (I) are:
- Suitable co-toning agents represented by formula (II) according to the present invention include:
- Suitable benzoxazine dione co-toning agents are:
- a further toning agent such as benzoxazine dione, a benzoxazine dione derivative, phthalazinone, a phthalazinone derivative, pyridazone or a pyridazone derivative
- the thermosensitive element contains at least two toning agents with a diffusion in the binder differing by at least a factor of 2, but less than a factor of 1000 and preferably by at least a factor of 10.
- the thermosensitive element further contains at least one toning agent selected from the group consisting of benzo[e][1,3]oxazine-2,4-dione, 7-methyl-benzo[e][1,3]oxazine-2,4-dione, 7-methoxy-benzo[e][1,3]oxazine-2,4-dione, 7-butoxy-benzo[e][1,3]oxazine-2,4-dione, 7-(ethylcarbonato)-benzo[e][1,3]oxazine-2,4-dione,
- the organic silver salts are not double organic salts containing a silver cation associated with a second cation e.g. magnesium or iron ions.
- At least one of the organic silver salts is a substantially light-insensitive silver salt of an organic carboxylic acid.
- At least one of the organic silver salts is a substantially light-insensitive silver salt of an aliphatic carboxylic acids known as a fatty acid, wherein the aliphatic carbon chain has preferably at least 12 C-atoms, e.g. silver laurate, silver palmitate, silver stearate, silver hydroxystearate, silver oleate and silver behenate, which silver salts are also called "silver soaps".
- Other silver salts of an organic carboxylic acid as described in GB-P 1,439,478, e.g. silver benzoate may likewise be used to produce a thermally developable silver image.
- Combinations of different silver salt of an organic carboxylic acids may also be used in the present invention, as disclosed in EP-A 964 300.
- Organic silver salts may be dispersed by standard dispersion techniques. Ball mills, bead mills, microfluidizers, ultrasonic apparatuses, rotor stator mixers etc. have been found to be useful in this regard. Mixtures of organic silver salt dispersions produced by different techniques may also be used to obtain the desired thermographic properties e.g. of coarser and more finely ground dispersions of organic silver salts.
- the reducing agent is an organic compound containing at least one active hydrogen atom linked to O, N or C, such as is the case with, aromatic di- and tri-hydroxy compounds.
- 1,2-dihydroxy-benzene derivatives such as catechol, 3-(3,4-dihydroxyphenyl) propionic acid, 1,2-dihydroxybenzoic acid, gallic acid and esters e.g.
- methyl gallate, ethyl gallate, propyl gallate and 3,4-dihydroxy-benzoic acid esters are preferred, with those described in EP-A 0 692 733, EP-A 0 903 625, EP-A 1 245 403 and EP-A 1 245 404 herein incorporated by reference being particularly preferred e.g.
- Combinations of reducing agents may also be used that on heating become reactive partners in the reduction of the one or more substantially light-insensitive organic silver salt.
- combinations of sterically hindered phenols with sulfonyl hydrazide reducing agents such as disclosed in US 5,464,738; trityl hydrazides and formyl-phenyl-hydrazides such as disclosed in US 5,496,695; trityl hydrazides and formyl-phenyl-hydrazides with diverse auxiliary reducing agents as disclosed in US 5,545,505, US 5,545,507 and US 5,558,983; acrylonitrile compounds as disclosed in US 5,545,515 and US 5,635,339; and 2-substituted malonodialdehyde compounds as disclosed in US 5,654,130.
- thermosensitive element Binder of the thermosensitive element
- the film-forming binder of the thermosensitive element may be all kinds of natural, modified natural or synthetic resins or mixtures of such resins, in which the at least one organic silver salt can be dispersed homogeneously either in aqueous or solvent media: e.g.
- cellulose derivatives starch ethers, galactomannan, polymers derived from ⁇ , ⁇ -ethylenically unsaturated compounds such as polyvinyl chloride, after-chlorinated polyvinyl chloride, copolymers of vinyl chloride and vinylidene chloride, copolymers of vinyl chloride and vinyl acetate, polyvinyl acetate and partially hydrolyzed polyvinyl acetate, polyvinyl alcohol, polyvinyl acetals that are made from polyvinyl alcohol as starting material in which only a part of the repeating vinyl alcohol units may have reacted with an aldehyde, preferably polyvinyl butyral, copolymers of acrylonitrile and acrylamide, polyacrylates, polymethacrylates, polystyrene and polyethylene or mixtures thereof.
- aldehyde preferably polyvinyl butyral
- copolymers of acrylonitrile and acrylamide copolymers of acrylonitrile and
- thermographic recording materials are: polyvinyl alcohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polyvinylpyrrolidone, polyethyleneglycol, proteinaceous binders, polysaccharides and water-soluble cellulose derivatives.
- a preferred water-soluble binder for use in the thermographic recording materials of the present invention is gelatine.
- the binder to organic silver salt weight ratio is preferably in the range of 0.2 to 7, and the thickness of the thermosensitive element is preferably in the range of 5 to 50 ⁇ m. Binders are preferred which do not contain additives, such as certain antioxidants (e.g. 2,6-di-tert-butyl-4-methylphenol), or impurities which adversely affect the thermographic properties of the thermographic recording materials in which they are used.
- additives such as certain antioxidants (e.g. 2,6-di-tert-butyl-4-methylphenol), or impurities which adversely affect the thermographic properties of the thermographic recording materials in which they are used.
- thermosensitive element further contains a stabilizer.
- the thermosensitive element further contains a stabilizer selected from the group consisting of benzotriazole; substituted benzotriazoles; aromatic polycarboxylic acid, such as ortho-phthalic acid, 3-nitro-phthalic acid, tetrachlorophthalic acid, mellitic acid, pyromellitic acid and trimellitic acid and anhydrides thereof; 1-phenyl-5-mercaptotetrazole compounds in which the phenyl group is substituted with a substituent containing an optionally substituted aryl group, 1-(5-mercapto-1-tetrazolyl)-acetyl compounds represented by formula (V): wherein R 3 is -NR 4 R 5 , -OR 6 or an optionally substituted aryl or heteroaryl group; R 4 is hydrogen or an optionally substituted alkyl, aryl or heteroaryl group; R 5 is an optionally substituted aryl or heteroaryl
- the thermosensitive element further contains at least one optionally substituted aliphatic or carbocyclic polycarboxylic acid and/or anhydride thereof in a molar percentage of at least 15 with respect to all the organic silver salt(s) present and in thermal working relationship therewith.
- the polycarboxylic acid may be used in anhydride form or partially esterified on the condition that at least two free carboxylic acids remain or are available during the heat recording step.
- thermosensitive element further contains photosensitive silver halide, thereby rendering the thermographic material photothermographic.
- the photosensitive silver halide used in the present invention may be employed in a range of 0.1 to 100 mol percent; preferably, from 0.2 to 80 mol percent; particularly preferably from 0.3 to 50 mol percent; especially preferably from 0.5 to 35 mol %; and especially from 1 to 12 mol % of substantially light-insensitive organic silver salt.
- the silver halide may be any photosensitive silver halide such as silver bromide, silver iodide, silver chloride, silver bromoiodide, silver chlorobromoiodide, silver chlorobromide etc.
- the silver halide may be in any form which is photosensitive including, but not limited to, cubic, orthorhombic, tabular, tetrahedral, octagonal etc. and may have epitaxial growth of crystals thereon.
- the silver halide used in the present invention may be chemically sensitized with a chemical sensitising merocyanine dye containing a thione group, and optionally with a chemical sensitizing agent such as a compound containing sulphur, selenium, tellurium etc., or a compound containing gold, platinum, palladium, iron, ruthenium, rhodium or iridium etc. in addition to sensitization with specific reducing agents, according to the present invention.
- a chemical sensitizing agent such as a compound containing sulphur, selenium, tellurium etc., or a compound containing gold, platinum, palladium, iron, ruthenium, rhodium or iridium etc.
- the grain size of the silver halide particles can be determined by the Moeller Teller method in which the sample containing silver halide particles is sedimented upon a filter paper, which is submerged in electrolyte together with a negative platinum needle-shaped electrode and a reference electrode. The silver halide particles on the filter paper are slowly scanned individually with the needle-shaped electrode, whereupon the silver halide grains are individually electrochemically reduced at the cathode. This electrochemical reduction is accompanied by a current pulse, which is registered as a function of time and integrated to give the charge transfer Q for the electrochemical reduction of the silver halide particle, which is proportional to its volume. From their volume the equivalent circular grain diameter of each grain can be determined and therefrom the average particle size and size distribution.
- the substantially light-insensitive thermographic material used in the present invention may contain one or more surfactants, which may be anionic, non-ionic or cationic surfactants and/or one or more dispersants.
- Suitable dispersants are natural polymeric substances, synthetic polymeric substances and finely divided powders, e.g. finely divided non-metallic inorganic powders such as silica.
- the support is transparent or translucent. It is preferably a thin flexible carrier made transparent resin film, e.g. made of a cellulose ester, e.g. cellulose triacetate, polypropylene, polycarbonate or polyester, e.g. polyethylene terephthalate.
- the support may be in sheet, ribbon or web form and subbed if needs be to improve the adherence to the thereon coated thermosensitive element.
- the support may be dyed or pigmented to provide a transparent coloured background for the image.
- thermosensitive element is provided with a protective layer.
- a protective layer In general this protects the thermosensitive element from atmospheric humidity and from surface damage by scratching etc. and prevents direct contact of printheads or heat sources with the recording layers.
- Protective layers for thermosensitive elements which come into contact with and have to be transported past a heat source under pressure, have to exhibit resistance to local deformation and good slipping characteristics during transport past the heat source during heating.
- a slipping layer being the outermost layer, may comprise a dissolved lubricating material and/or particulate material, e.g. talc particles, optionally protruding from the outermost layer. Examples of suitable lubricating materials are a surface active agent, a liquid lubricant, a solid lubricant or mixtures thereof, with or without a polymeric binder.
- any layer of the substantially light-insensitive thermographic material used in the present invention may proceed by any coating technique e.g. such as described in Modern Coating and Drying Technology, edited by Edward D. Cohen and Edgar B. Gutoff, (1992) VCH Publishers Inc., 220 East 23rd Street, Suite 909 New York, NY 10010, USA. Coating may proceed from aqueous or solvent media with overcoating of dried, partially dried or undried layers.
- Thermographic imaging is carried out by the image-wise application of heat either in analogue fashion by direct exposure through an image or by reflection from an image, or in digital fashion pixel by pixel either by using an infra-red heat source, for example with a Nd-YAG laser or other infra-red laser, with a substantially light-insensitive thermographic material preferably containing an infra-red absorbing compound, or by direct thermal imaging with a thermal head.
- thermal printing image signals are converted into electric pulses and then through a driver circuit selectively transferred to a thermal printhead.
- the thermal printhead consists of microscopic heat resistor elements, which convert the electrical energy into heat via Joule effect.
- the operating temperature of common thermal printheads is in the range of 300 to 400°C and the heating time per picture element (pixel) may be less than 1.0ms, the pressure contact of the thermal printhead with the recording material being e.g. 200-1000g/linear cm, i.e. with a contact zone (nip) of 200 to 300 ⁇ m a pressure of 5000 to 50,000 g/cm 2 , to ensure a good transfer of heat.
- Activation of the heating elements can be power-modulated or pulse-length modulated at constant power.
- EP-A 654 355 discloses a method for making an image by image-wise heating by means of a thermal head having energizable heating elements, wherein the activation of the heating elements is executed duty cycled pulsewise.
- EP-A 622 217 discloses a method for making an image using a direct thermal imaging element producing improvements in continuous tone reproduction.
- Image-wise heating of the recording material can also be carried out using an electrically resistive ribbon incorporated into the material.
- Image- or pattern-wise heating of the recording material may also proceed by means of pixel-wise modulated ultrasound.
- Photothermographic recording materials may be exposed with radiation of wavelength between an X-ray wavelength and a 5 microns wavelength with the image either being obtained by pixel-wise exposure with a finely focused light source, such as a CRT light source; a UV, visible or IR wavelength laser, such as a Violet-laser, a He/Ne-laser or an IR-laser diode, e.g. emitting at 400nm, 630nm, 650nm, 780nm, 830nm or 850nm; or a light emitting diode, for example one emitting at 659nm; or by direct exposure to the object itself or an image therefrom with appropriate illumination e.g.
- a finely focused light source such as a CRT light source
- a UV, visible or IR wavelength laser such as a Violet-laser, a He/Ne-laser or an IR-laser diode, e.g. emitting at 400nm, 630
- any sort of heat source can be used that enables the recording materials to be uniformly heated to the development temperature in a time acceptable for the application concerned e.g. contact heating, radiative heating, microwave heating etc.
- Thermographic imaging can be used for the production of reflection type prints and transparencies, in particular for use in the medical diagnostic field in which black-imaged transparencies are widely used in inspection techniques operating with a light box.
- isobutylurea prepared from potassium cyanate and isobutylamine by refluxing the mixture at pH 4 to 5 for 1 hour
- 12.7 g (0.149 mol) cyanoacetic acid were dissolved in 39 mL acetic anhydride and heated to 80°C for 2 hours. After cooling the mixture was treated with 70 mL diethylether, then cooled to 0°C whereupon 1-cyanoacetyl-3-isobutylurea precipitates out.
- Subbing layer Nr. 01 on the emulsion side of the support had the composition: copolymer of 88% vinylidene chloride, 10% methyl acrylate and 2% itaconic acid 79.1 mg/m 2 Kieselsol® 100F, a colloidal silica from BAYER 18.6 mg/m 2 Mersolat® H, a surfactant from BAYER 0.4 mg/m 2 Ultravon® W, a surfactant from CIBA-GEIGY 1.9 mg/m 2
- thermosensitive element Ingredients in the thermosensitive element in addition to the above-mentioned ingredients:
- a screening method was developed using a silver hydrosol, which was prepared 20 to 30 minutes before the compound TA-1 was screened. 1 mL of a 0.001M solution of the compound being screened was then added to 10 mL of this yellow silver hydrosol. If the silver hydrosol changed colour within one hour, 10 mL of a 0.5% aqueous gelatin solution was added 10s after this change of colour to prevent further silver aggregation. If no change in colour was observed after 1 hour, the concentration of the compound being screened in the hydrosol was increased from 10 -4 M to 10 -3 M. Control experiments were carried out with each batch of silver hydrosol to check its performance with a 10 -3 M solution of BOD06, a compound giving immediate aggregation.
- the degrees of aggregation obtained with TA-1 is given in Table 1A below and the degrees of aggregation for BOD01 to BOD05 are given in Table 1B below.
- the diffusion experiments were carried out with the surface of a 15g/m 2 layer of S-LEC BL5HP containing the compound being screened in a concentration of 15 mol% with respect to a quantity of silver behenate a quarter of that of the S-LEC BL5HP coverage coated on a glass support in contact with the surface of a 10g/m 2 layer of S-LEC BL5HP containing glutaric acid in a concentration of 24 mol% with respect to a quantity of silver behenate a quarter of that of the S-LEC BL5HP coverage coated on a SERS-probe. In this configuration the SERS-probe was uppermost.
- the diffusion experiment was carried out by heating the S-LEC BL5HP-coated glass support with the glass support in contact with an electrically heated plate at a temperature of 150°C for a predetermined time. The configuration was then removed from the heated plate and a Raman spectrum was taken by Dilor XY-laser spectroscopy with the 514 nm line of a Coherent Innova 70C argon/krypton mixed gas laser at 12mW through the glass plate to ascertain whether the ingredient being screened had diffused to the silver nano-particles in the SERS-probe on the basis of its surface-enhanced Raman spectrum due to contact with silver using the so-called "Surface Enhanced Raman Scattering" (SERS)-effect.
- SERS Surface Enhanced Raman Scattering
- coated glass support and the coated SERS-probe were prepared by coating the glass support and SERS-probe respectively with a 2-butanone solution of S-LEC BL5HP and the ingredient being screened and glutaric acid respectively, drying at room temperature and finally heating the coated glass support and the coated SERS-probe for 10 minutes at 85°C.
- the SERS-probe was prepared by adding an aqueous solution of silver nitrate to an aqueous solution of potassium borohydride and stabilizing the 5 to 10 nm silver nuclei by adding polyvinyl alcohol, the final composition being 0.01M in silver nitrate, 0.015M in potassium borohydride and 1% in polyvinyl alcohol.
- the resulting silver hydrosol was then added to a solution of gelatin containing a hardener, a biocide, an inorganic pigment and a hardening regulator.
- the resulting mixture was coated to a dry thickness of 100 nm onto glass plates giving a thin, yellow transparent film containing silver nuclei 5 to 10 nm in diameter.
- the coated glass plate was then immersed in deionised water at 40°C for 15 minutes and then in a 0.001M aqueous solution of silver nitrate containing 0.5% of gelatin and 0.001M in ascorbic acid, a reducing agent for silver cations, at 25°C. Electroless deposition of silver occurred on the silver nuclei rather than nucleation of new particle, because nucleation requires much more energy than growth of the silver nuclei already present. Finally the layer containing 90 nm silver particles was rinsed with deionised water and dried. These 90nm silver particles were required for the laser wavelength used in these experiments (514.5 nm). Other silver particle sizes can be obtained, depending upon the composition of the bath, its temperature and the time of immersion.
- TA-1 produced a degree of silver particle aggregation of +++ within 10s and exhibited a diffusion time at 150°C through S-LEC BL5HP in the presence of glutaric acid of 120s.
- thermographic materials of COMPARATIVE EXAMPLES 6 to 13 and INVENTION EXAMPLES 2 to 6 were prepared by coating a dispersion with the following ingredients in 2-butanone onto a 175 ⁇ m thick blue-pigmented polyethylene terephthalate support with CIELAB a*- and b*- values of -9.5 and -17.9 respectively subbed on the emulsion-coated side with subbing layer 01 giving layers after drying at 85°C for 3 minutes in a drying cupboard with the compositions given in Table 2 below.
- thermosensitive elements were then coated with an aqueous composition with the following ingredients, which was adjusted to a pH of 3.8 with 1N nitric acid, to a wet layer thickness of 85 ⁇ m and then dried at 50°C for 15 minutes to produce a protective layer with the composition: ERCOLTM 48 20 2.1g/m 2 LEVASILTM VP AC 4055 1.05g/m 2 ULTRAVONTM W 0.075g/m 2 SYLOIDTM 72 0.09 g/m 2 SERVOXYL
- thermographic recording materials of COMPARATIVE EXAMPLES 6 to 13 and INVENTION EXAMPLES 2 to 6 were printed using a DRYSTARTM 4500 printer from AGFA-GEVAERT with a resolution of 508 dpi which had been modified to operate at a printing speed of 14 mm/s and a line-time of 3.5 ms instead of 7.1 ms and in which the 75 ⁇ m long (in the transport direction) and 50 ⁇ m wide thermal head resistors were power-modulated to produce different image densities.
- Table 7 show that a combinations of two benzoxazine dione toning agents does not exhibit the synergetic more negative a* and b* CIELAB values or the synergetic reduction in diffusion exhibited by a combination of a toning agent, according to the present invention, and a benzoxazine dione toning agent.
- the results in Table 8 show that toning agents, according to the present invention, exhibit in a particular thermosensitive element a marginally more neutral a* CIELAB-value.
- the a* CIELAB-value observed is strongly dependent upon the ingredients used in the substantially light-insensitive thermographic material, which means that with other ingredients a similar difference in a* CIELAB-value would mean the difference between tone neutrality i.e. an a* CIELAB value in the neighbourhood of 0 and a strongly reddish image tone i.e. a strongly positive a* CIELAB-value.
- thermographic materials of COMPARATIVE EXAMPLES 14 to 18 and INVENTION EXAMPLES 7 to 20 were prepared by coating a dispersion with the following ingredients in 2-butanone onto a 175 ⁇ m thick blue-pigmented polyethylene terephthalate support with CIELAB a*- and b*- values of -9.5 and -17.9 respectively subbed on the emulsion-coated side with subbing layer 01 giving layers after drying at 85°C for 3 minutes in a drying cupboard with the compositions given in Table 9 below.
- thermographic recording materials of COMPARATIVE EXAMPLES 14 to 18 and INVENTION EXAMPLES 7 to 20 as described for the thermographic recording materials of COMPARATIVE EXAMPLE 6 to 13 and INVENTION EXAMPLES 2 to 6 and the image tone of fresh prints assessed as for the thermographic recording materials of COMPARATIVE EXAMPLE 6 to 13 and INVENTION EXAMPLES 2 to 6.
- the results are given in Tables 10 and 11. Comparative Example Nr.
- thermographic recording materials of INVENTION EXAMPLES 7 to 19 were all more blue and hence more acceptable for a radiologist viewing images in transmission than those of the thermographic recording materials of COMPARATIVE EXAMPLES 14 to 16 and 18.
- toning agents TA-1, TA-3 to TA-12, TA 15 and TA-16 exhibit more favourable image toning properties as indicated by the less positive a*- and b*-values of the corresponding thermographic recording materials compared with those of the thermographic recording material of COMPARATIVE EXAMPLE 17 which does not contain a toning agent.
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Abstract
Description
- The present invention concerns toning agents for use in thermographic recording materials.
- Thermography is an image-forming process including a heating step and hence includes photothermography in which the image-forming process includes image-wise exposure and direct thermal processes in which the image-forming process includes an image-wise heating step. In direct thermal printing a visible image pattern is produced by image-wise heating of a recording material.
- US 3,080,254 discloses a typical heat-sensitive copy paper including in the heat-sensitive layer a thermoplastic binder, e.g ethyl cellulose, a water-insoluble silver salt, e.g. silver stearate and an appropriate organic reductor, of which 4-methoxy-1-hydroxy-dihydronaphthalene is a representative. Localized heating of the sheet in the thermographic reproduction process, or for test purposes by momentary contact with a metal test bar heated to a suitable conversion temperature in the range of about 90-150 °C, causes a visible change to occur in the heat-sensitive layer. The initially white or lightly coloured layer is darkened to a brownish appearance at the heated area. In order to obtain a more neutral colour tone a heterocyclic organic toning agent such as phthalazinone is added to the composition of the heat-sensitive layer. Example 2 discloses the use of barbituric acid in heat-sensitive copy sheet to improve the image tone.
- WO 96/010213 discloses a thermographic imaging element comprising a substrate having coated on at least one surface thereof a thermographic imaging system comprising at least one layer comprising light-insensitive organic silver salt; reducing agent for silver ion; binder; toner; and a dye which absorbs radiation in the wavelength range of 750-1100 n, wherein said at least one layer comprising said light-insensitive organic silver salt forms an image density greater than about 1.0 when exposed to 0.10 to 2.0 joules/cm2 of said radiation in 0.20 to 200 microseconds. The thermographic imaging system of Examples 2, 3, 5 and 6 contained barbituric acid in association with known toning agents such as phthalazinone and succinimide.
- US 3,893,860 discloses in a photothermographic element comprising a support having thereon (I): (a) photographic silver halide in association with (b) a silver salt of a heterocyclic thione, said heterocyclic thione being represented by the formula: wherein R represents atoms completing a 5-member heterocyclic nucleus and Z is alkylene containing 1 to 30 carbon atoms, (c) an organic reducing agent for said silver salt of a heterocyclic thione, and (d) a polymeric, synthetic binder and contiguous to (I), at least one polymer layer (II), the improvement wherein said polymer (A) comprising at least 50% by weight of a polymer (A) comprising the repeating units represented by the formulas: wherein: R1 is hydrogen or alkyl containing 1 to 4 carbon atoms; R2 is an imidazoyl, N-substituted carbamoyl, 2-pyrrolidinyl, acetoacetoxyethoxycarbonyl, acetoacetonylmethylphenyl, ethoxycarbonylaceto, pyridyl, hydroxy, hydroxalkyl containing 1 to 4 carbon atoms, carboxy, carboxyethoxycarbonyl, a heterocyclic ammonium salt group having a 5- or 6-membered azonia nitrogen-containing ring, or a pyridinium salt group, and the weight ratio of starting monomers for said units B and C is, respectively, about 60:40 to 100:0. US 3,893,860 also discloses the use of 2,4-dimercaptopyrimidine as a toning agent for use in photothermographic elements disclosed therein.
- EP-A 0 921 433 discloses a thermographic recording element having at least one image forming layer and comprising an organic silver salt, an reducing agent, and at least one of compounds of the following formulas (A) and (B): wherein Z1 and Z2 each are a group of non-metallic atoms capable of forming a 5- to 7-membered ring structure with the carbon atoms, Y1 and Y2 each as -C(=O)- or -SO2-, X1 and X2 each ar a hydroxy or salt thereof, alkoxy, aryloxy, heterocyclic oxy, mercapto or salt thereof, alkylthio, arylthio, heterocyclic thio, amino, alkylamino, arylamino, heterocyclic amino, acylamino, sulfonamide or heterocyclic group, and Y3 is hydrogen or a substituent. EP-A 0 921 433 also discloses the use of pyrimidine and asymmetric triazines such as 2,4-dihydroxypyrimidine (uracil), 2-hydroxy-4-amino-pyrimidine and azauracil in the thermographic recording element disclosed therein.
- US 6,479,227 discloses a thermographic recording element comprising: a support having a pair of opposed surfaces, at least one antistatic layer containing conductive metal oxide particles and at least one thermographic recording layer containing an organic silver salt and a reducing agent on the first surface of the support, and at least two layers on the other surface of the support, wherein the outermost layer of said at least two layers contains a hydrophobic polymer binder and at least one layer of said at least two layers other than said outermost layer contains a matte agent, wherein: said conductive metal oxide particles are acicular particles having a major axis to minor axis ratio of from 3/1 to 50/1, and said thermographic recording element further comprises a nucleating agent. US 6,479,227 also discloses the use of 2,4-dimercaptopyrimidine, pyrimidine and asymmetric triazines such as 2,4-dihydroxypyrimidine (uracil), 2-hydroxy-4-amino-pyrimidine, azauracil, 4-hydroxy-2-mercaptopyrimidine, 2-mercaptopyrimidine, 4,6-diamino-2-mercaptopryimidine, and 2-mercapto-4-methylpyrimidine hydrochloride in the thermographic recording element disclosed therein.
- US 3,951,660 discloses a photographic radiation sensitive recording material having therein a radiation sensitive composition and at least one layer containing dispersed in a binding agent a substantially non-light sensitive silver salt, a reducing agent for the non-light sensitive silver salt, and a toner compound, the improvement which comprises the toner being a heterocyclic toner compound of the following formula: in which X represents O or N-R5; R1, R2, R3 or R4 represent hydrogen, alkyl, cycloalkyl, alkoxy, alkylthio, hydroxy, dialkylamino or halogen, in addition to which R1 and R2 or R2 and R3 or R3 and R4 can represent the ring members required to complete an anellated aromatic ring, and R5 represents alkyl. US 3,951,660 discloses 2,4(1H,3H)-quinazolinedione and various 2,4(1H,3H)-quinazolinedione (benzoyleneurea) derivatives substituted at the nitrogen atom in the 1-position i.e. 2-hydroxy-pyrimidine derivatives annelated at the 5,6 positions with a benzene ring: INVENTION EXAMPLES are disclosed in US 3,951,660 in which the use of compounds 1, 3 and 26 as toning agents in thermographic recording materials is exemplified.
- US-P 3,885,967 discloses a photosensitive material for a thermally developable lightsensitive element which comprises: a) a silver salt component comprising silver laurate or silver caprate, b) a catalytic amount of a photosensitive silver halide component comprising a photosensitive silver halide, or a compound which reacts with silver laurate or silver caprate to form a photosensitive silver halide, c) a reducing agent, d) a binder, and e) a toning agent comprising a compound represented by the formula: wherein R1, R2, R3 and R4 each represents a hydrogen atom, an alkyl group, an aryl group, an acylamido group, a halogen atom, a hydroxyl group or a nitro group.
- EP-A 0 752 616 discloses a thermographic material comprising at least one element and wherein said element(s) contain(s) therein a substantially light-insensitive organic heavy metal salt and an organic reductor therefor, the said material being capable of thermally producing an image from said organic heavy metal salt and reductor, wherein said material contains a 1,3-benzoxazine-2,4-dione toning agent having general formula (I): wherein R1 represents hydrogen, -CH2OH, -(C=O)-R, -CONHR, or M; R2, R3, R4 and R5 each independently represents hydrogen, -O-(C=O)-OR or -NH-(C=O)-OR and at least one of which is not hydrogen if R1 is also hydrogen; R represents an alkyl or aryl group either of which may be substituted; and M represents a monovalent heavy metal ion.
- The imaging arts have long recognized that the field of thermography comprising both photothermography and substantially light-insensitive thermography are clearly distinct from that of photography. Photothermographic and substantially light-insensitive thermographic materials differ significantly from conventional silver halide photographic materials which require processing using aqueous processing solutions.
- In photothermographic and substantially light-insensitive thermographic imaging materials, a visible image is created by heat as a result of the reaction of a developer incorporated within the element. Heat at 50°C or more is essential for this development process and temperatures of over 100°C are routinely required for photothermographic materials and still higher temperatures are routinely required for substantially light-insensitive thermographic materials. In contrast, conventional wet-processed photographic imaging elements require processing in aqueous processing baths to provide a visible image (e.g., developing and fixing baths) and development is usually performed at more moderate temperatures (e.g., 30° to 50°C) to provide a visible image.
- In photothermographic elements only a small amount of silver halide is used to capture light and a different sort of silver (e.g., silver behenate) is used to generate the image with heat. Thus imaged, the silver halide serves as a catalyst for the physical development process involving the non-photosensitive, reducible silver source and the incorporated reducing agent. In contrast, conventional wet-processed black-and-white photographic materials use only one form of silver (i.e. silver halide) that, upon chemical development, is itself converted into the silver image, or upon physical development requires addition of an external silver source (or other reducible metal ions that form black images upon reduction to the corresponding metal). Thus, photothermographic materials require an amount of silver halide per unit area that is only a fraction of that used (as little as one-hundredth) of that used in a conventional wet-processed photographic material.
- Moreover, in photothermographic systems, all of the "chemistry" for imaging is incorporated within the material itself. For example, such materials include a developer (i.e. a reducing agent for the reducible silver ions) while photographic materials usually do not. Even in so-called "instant photography", the developer chemistry is physically separated from the photosensitive silver halide until development is desired. The incorporation of the developer into substantially light-insensitive thermographic and photothermographic materials can lead to the increased formation of various types of "fog" or other undesirable sensitometric side effects. Therefore, much effort has gone into the preparation and manufacture of substantially light-insensitive thermographic and photothermographic materials to minimize these problems during the preparation of the substantially light-insensitive thermographic and photothermographic dispersions as well as during coating, storage, and post-processing handling.
- Moreover, in photothermographic materials, the unexposed silver halide generally remains intact after development and the material must be stabilized against further imaging and development. In contrast, silver halide is removed from conventional photographic materials after solution development to prevent further imaging (i.e. in the aqueous fixing step).
- In photothermographic and substantially light-insensitive thermographic materials, the binder is capable of wide variation and a number of binders (both hydrophilic and hydrophobic) are useful. In contrast, conventional photographic materials are limited almost exclusively to hydrophilic binders such as gelatin.
- Because photothermographic and substantially light-insensitive thermographic elements require thermal processing, they pose different considerations and present distinctly different problems in manufacture and use, compared to conventional wet-processed silver halide photographic materials. Additives that have one effect in conventional silver halide photographic materials may behave quite differently when incorporated in substantially light-insensitive thermographic or photothermographic materials where the underlying chemistry is significantly more complex. The incorporation of such additives as, for example, stabilizers, antifoggants, speed enhancers, sensitizers, supersensitizers and spectral and chemical sensitizers in conventional photographic materials is not predictive of whether such additives will prove beneficial or detrimental in substantially light-insensitive thermographic or photothermographic materials. For example, it is not uncommon for a photographic antifoggant useful in conventional photographic materials to cause various types of fog when incorporated into substantially light-insensitive thermographic or photothermographic materials, or for supersensitizers that are effective in photographic materials to be inactive in photothermographic materials.
- These and other distinctions between photothermographic and substantially light-insensitive thermographic materials and photographic materials are described in Imaging Processes and Materials (Neblette's Eighth Edition); J. Sturge et al, Ed; Van Nostrand Rheinhold: New York, 1989; Chapter 9 and in Unconventional Imaging processes; E. Brinckman et al., Ed: The focal Press: London and New York: 1978: pp. 74-75, and in Zou, Sahyun, Levy and Serpone, J. Imaging Sci. Technol. 1996, 40, pp. 94-103.
- The technology of substantially light-insensitive thermographic materials in which image formation is based on the reduction of organic silver salts is significantly different from that of photothermographic recording materials, despite the fact that in both cases the image results from the reduction of organic silver salts. However, this a superficial similarity masking the fact that the realization of the species which catalyze this reduction is completely different, being image-wise exposure of photosensitive silver halide-containing photo-addressable thermally developable elements in the case of photothermographic recording materials and image-wise heating of thermosensitive elements which do not contain photosensitive silver halide in the case of thermographic recording materials. This difference in technology is further underlined by the nature of the ingredients used in the two types of materials, the most significant difference being the absence of photosensitive silver halide and spectral sensitizing agents in substantially light-insensitive thermographic recording materials, but also reflected in the different reducing agents used, stronger reducing agents being used in substantially light-insensitive thermographic recording materials, the different stabilizers, the different toning agents etc. Furthermore, the thermal development processes themselves are significantly different in that the whole material is heated at temperatures of less than 150°C for periods of seconds (e.g. 10s) in the case of photothermographic recording materials, whereas in the case of substantially light-insensitive thermographic recording materials the materials are image-wise heated at much higher temperatures for periods of ms (e.g. 10-20 ms). Realization of a neutral image tone is a major problem in the case of substantially light-insensitive thermographic recording materials due to the very short heating times, whereas it is much less of a problem in photothermographic recording materials due to the much longer heating times.
- Thermographic and photothermographic materials with prior art toning agents exhibit poor storage properties, as is the case with e.g. phthalazinone, and/or an image colour which has an insufficiently neutral tone for black and white images, as is the case with e.g. succinimide, phthalimide, phthalic acid and phthalazine. The use of 3,4-dihydro-2,4-dioxo-1,3,2H-benzoxazine as a toning agent in thermographic materials, as disclosed in US-P 3,951,660, represented an improvement in storage properties and in the neutrality of the image tone, whether substituted, as disclosed in US-P 3,885,967 and US-P 3,951,660, or unsubstituted, as disclosed in US-P 3,951,660. Such toning agents are insufficiently soluble in ecologically acceptable coating solvents and thermographic materials containing these toning agents exhibit a undesirably strong deterioration in image colour and an undesirable increase in image background (fog) upon storage. Furthermore, such toning agents diffuse through the thermographic materials to the thermal head resulting in cloudiness in the imaging material, deposits of ingredients and by-products from the image-forming process on the surface of the thermographic material and, in the case of substantially light-insensitive thermographic materials in thermal head printers, image degradation due to thermal head contamination.
- It is therefore an aspect of the present invention to provide toning agents for use in substantially light-insensitive thermographic recording materials suitable for use in thermographic printers without adverse effect on the image tone.
- It is therefore an aspect of the present invention to provide toning agents for use in photothermographic materials suitable for use in photothermographic printers without adverse effect on the image tone.
- Further aspects and advantages of the invention will become apparent from the description hereinafter.
- It has been surprisingly found that 2-hydroxy-pyrimidine derivatives which adsorb particularly rapidly on silver nano-particles as demonstrated by time-resolved SERS measurements and bring about rapid aggregation thereof render the image tone of thermographic materials more neutral in thermographic materials, whose image forming process is based upon the image-wise reduction of substantially light-insensitive organic silver salts, i.e. exhibit so-called toning properties. Moreover, it has been surprisingly found that in a particular binder matrix a combination of toning agents both exhibiting rapid adsorption on silver nano-particles and capable of bringing about rapid aggregation thereof, but exhibiting slow and fast diffusion respectively in the particular polymer matrix, exhibit favourable synergistic effects with respect to image tone and diffusion thereof to the surface of the thermographic materials.
- Aspects of the present invention are realized with a black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, characterized in that the at least one toning agent is represented by formula (I): wherein R1 is a hydrogen atom or an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted; R2 and R3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonato, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, heterocyclic or heteroaryl group all of which may be optionally substituted; R2 and R3 may together represent the atoms necessary to complete a heteroaromatic ring with no more than one nitrogen atom, an alicyclic ring or a heterocyclic ring which all may be optionally substituted; X is a carbonyl group, or is -N-R4, where R4 is an alkyl group; and with the proviso that R1 may not be a hydrogen atom if both R2 and R3 are both hydrogen atoms.
- Aspects of the present invention are also realized by the use of compounds according to the above-mentioned formula (I) as toning agents in imaging processes involving silver particles.
- Preferred embodiments of the present invention are disclosed in the detailed description of the invention.
- The term thermographic material as used in disclosing the present invention includes both photothermographic materials and substantially light-insensitive thermographic materials.
- The term alkyl means all variants possible for each number of carbon atoms in the alkyl group i.e. for three carbon atoms: n-propyl and isopropyl; for four carbon atoms: n-butyl, isobutyl and tertiary-butyl; for five carbon atoms: n-pentyl, 1,1-dimethylpropyl, 2,2-dimethylpropyl and 2-methyl-butyl etc.
- The term acyl group as used in disclosing the present invention means -(C=O)-aryl and -(C=O)-alkyl groups.
- The term carbocyclic ring includes both alicylic rings and aromatic rings.
- Substantially light-insensitive means not intentionally light sensitive.
- The L*, a* and b* CIELAB-values are defined in ASTM Norm E179-90 in a R(45/0) geometry with evaluation according to ASTM Norm E308-90 and have been used to characterize the image tone of thermographic materials of the present invention.
- Heating in association with the expression a substantially water-free condition as used herein, means heating at a temperature of 80 to 250°C. The term "substantially water-free condition" as used herein means that the reaction system is approximately in equilibrium with water in the air, and water for inducing or promoting the reaction is not particularly or positively supplied from the exterior to the element. Such a condition is described in T.H. James, "The Theory of the Photographic Process", Fourth Edition, Macmillan 1977, page 374.
- The term thermosensitive element as used herein is that element which contains all the ingredients which contribute to image formation. According to the present invention, the thermosensitive element contains one or more substantially light-insensitive organic silver salts, one or more reducing agents therefor in thermal working relationship therewith and a binder. The element may comprise a layer system in which the above-mentioned ingredients may be dispersed in different layers, with the proviso that the substantially light-insensitive organic silver salts are in reactive association with the reducing agents i.e. during the thermal development process the reducing agent must be present in such a way that it is able to diffuse to the particles of substantially light-insensitive organic silver salt so that reduction to silver can occur. Such materials include the possibility of one or more substantially light-insensitive organic silver salts and/or one of more organic reducing agents therefor being encapsulated in heat-responsive microcapsules, such as disclosed in EP-A 0 736 799 herein incorporated by reference.
- Aspects of the present invention are realized with a black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, characterized in that the at least one toning agent is a compound represented by formula (I).
- According to a first embodiment of the black and white monosheet thermographic recording material, according to the present invention, R1 is an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted.
- According to a second embodiment of the black and white monosheet thermographic recording material, according to the present invention, the compound according to formula (I) is represented by formula (II): wherein R1 is a hydrogen atom or an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted; R2 and R3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonato, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, heterocyclic or heteroaryl group all of which may be optionally substituted; R2 and R3 may together represent the atoms necessary to complete a heteroaromatic ring with no more than one nitrogen atom, an alicyclic ring or a heterocyclic ring which all may be optionally substituted; and with the proviso that R1 may not be a hydrogen atom if both R2 and R3 are both hydrogen atoms.
- According to a third embodiment of the black and white monosheet thermographic recording material, according to the present invention, the 2-hydroxy-pyrimidine derivative is selected from the group consisting of 2-hydroxy-pyrimidines annelated with a heterocyclic ring, 2-hydroxy-pyrimidine derivatives annelated with a carbocyclic ring including purine derivatives.
- According to a fourth embodiment of the black and white monosheet thermographic recording material, according to the present invention, the substituent for R1 is selected from the group consisting of alkyl, aryl, alkoxy, hydroxy, carboxy, ester, amide, sulfo and sulfoalkyl groups.
- According to a fifth embodiment of the black and white monosheet thermographic recording material, according to the present invention, the substituent for R2 is selected from the group consisting of alkyl, aryl, alkoxy, hydroxy, carboxy, ester, amide, sulfo and sulfoalkyl groups.
- According to a sixth embodiment of the black and white monosheet thermographic recording material, according to the present invention, the substituent for R3 is selected from the group consisting of alkyl, aryl, alkoxy, hydroxy, carboxy, ester, amide, sulfo and sulfoalkyl groups.
- According to a seventh embodiment of the black and white monosheet thermographic recording material, according to the present invention, the compound according to formula (I) is selected from the group consisting of: xanthine (2,6-dihydroxy-purine), xanthine derivatives and 2,6,8-trihydroxy-purine (uric acid).
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- According to a ninth embodiment of the black and white monosheet thermographic recording material, according to the present invention, the thermosensitive element further contains at least one toning agent selected from the group consisting of compounds according to formula (III), wherein R5 is an alkyl group optionally substituted with a hydroxy, carboxy, carboxy ester, acyl or carbonato group; X is S, O or N-R10; R6 is an optionally substituted alkyl group; R6, R7, R8 and R9 independently represent a hydrogen atom, a halogen atom or an alkyl, an alkoxy, a thio-alkoxy, a nitro, a cyano, a carboxy, a carboxy ester, an acyl, an aldehyde, an acylamido, a sulphonamido, an acylamino, a carbonato, a hydroxy or an aryl group or at least one of R6 and R7, R7 and R8 and R8 and R9 independently represent the atoms necessary to form a carbocyclic or heterocyclic group or at least one of R5 and R9 and R6 and R10 independently represent the atoms necessary to form a heterocyclic ring; compounds represented by formula (IV): wherein R11 is an optionally substituted alkyl group; Y is S, O or N-R14; R14 is an optionally substituted alkyl group; R12 and R13 independently represent a hydrogen atom, a halogen atom or an alkyl, an alkoxy, a thio-alkoxy, a nitro, a cyano, a carboxy, a carboxy ester, an acyl, an aldehyde, an acylamido, a sulphonamido, an acylamino, a carbonato, a hydroxy or an aryl group or R12 and R13 represent the atoms necessary to form a heterocyclic or a non-aromatic carbocyclic ring or at least one of R12 and R14 and R13 and R11 independently represent the atoms necessary to form a heterocyclic ring; and both R12 and R13 cannot both be an alkyl group, phthalazinone, phthalazinone derivatives, pyridazone, pyridazone derivatives, benzoxazine dione, benzoxazine dione derivatives, naphthoxazine dione and naphthoxazine dione derivatives.
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- The synergetic effect of a combination of two toning agents, according to the present invention, or one toning agent according to the present invention, together with a further toning agent, such as benzoxazine dione, a benzoxazine dione derivative, phthalazinone, a phthalazinone derivative, pyridazone or a pyridazone derivative, in obtaining a more neutral image tone than would be expected by additive combination of the image tone obtained with the toning agents separately may, we believe, be due to combining toning agents which exhibit good silver nanoparticle-aggregating properties but have very different diffusion coefficients.
- According to a tenth embodiment of the black and white monosheet thermographic recording material, according to the present invention, the thermosensitive element contains at least two toning agents with a diffusion in the binder differing by at least a factor of 2, but less than a factor of 1000 and preferably by at least a factor of 10.
- According to an eleventh embodiment of the black and white monosheet thermographic recording material, according to the present invention, the thermosensitive element further contains at least one toning agent selected from the group consisting of benzo[e][1,3]oxazine-2,4-dione, 7-methyl-benzo[e][1,3]oxazine-2,4-dione, 7-methoxy-benzo[e][1,3]oxazine-2,4-dione, 7-butoxy-benzo[e][1,3]oxazine-2,4-dione, 7-(ethylcarbonato)-benzo[e][1,3]oxazine-2,4-dione,
- According to a twelfth embodiment of the black and white monosheet thermographic recording material of the present invention, the organic silver salts are not double organic salts containing a silver cation associated with a second cation e.g. magnesium or iron ions.
- According to a thirteenth embodiment of the black and white monosheet thermographic recording material of the present invention, at least one of the organic silver salts is a substantially light-insensitive silver salt of an organic carboxylic acid.
- According to a fourteenth embodiment of the black and white monosheet thermographic recording material of the present invention, at least one of the organic silver salts is a substantially light-insensitive silver salt of an aliphatic carboxylic acids known as a fatty acid, wherein the aliphatic carbon chain has preferably at least 12 C-atoms, e.g. silver laurate, silver palmitate, silver stearate, silver hydroxystearate, silver oleate and silver behenate, which silver salts are also called "silver soaps". Other silver salts of an organic carboxylic acid as described in GB-P 1,439,478, e.g. silver benzoate, may likewise be used to produce a thermally developable silver image. Combinations of different silver salt of an organic carboxylic acids may also be used in the present invention, as disclosed in EP-A 964 300.
- Organic silver salts may be dispersed by standard dispersion techniques. Ball mills, bead mills, microfluidizers, ultrasonic apparatuses, rotor stator mixers etc. have been found to be useful in this regard. Mixtures of organic silver salt dispersions produced by different techniques may also be used to obtain the desired thermographic properties e.g. of coarser and more finely ground dispersions of organic silver salts.
- According to a fifteenth embodiment of the black and white thermographic recording material, according to the present invention, the reducing agent is an organic compound containing at least one active hydrogen atom linked to O, N or C, such as is the case with, aromatic di- and tri-hydroxy compounds. 1,2-dihydroxy-benzene derivatives, such as catechol, 3-(3,4-dihydroxyphenyl) propionic acid, 1,2-dihydroxybenzoic acid, gallic acid and esters e.g. methyl gallate, ethyl gallate, propyl gallate and 3,4-dihydroxy-benzoic acid esters are preferred, with those described in EP-A 0 692 733, EP-A 0 903 625, EP-A 1 245 403 and EP-A 1 245 404 herein incorporated by reference being particularly preferred e.g. ethyl 3,4-dihydroxybenzoate, n-butyl 3,4-dihydroxybenzoate, 3,4-dihydroxy-benzaldehyde, 3,4-dihydroxy-acetophenone, 3,4-butyrophenone, 3,4-dihydroxy-benzophenone, 3,4-dihydroxybenzophenone derivatives, 3,4-dihydroxy-benzonitrile, and tannic acid.
- Combinations of reducing agents may also be used that on heating become reactive partners in the reduction of the one or more substantially light-insensitive organic silver salt. For example, combinations of sterically hindered phenols with sulfonyl hydrazide reducing agents such as disclosed in US 5,464,738; trityl hydrazides and formyl-phenyl-hydrazides such as disclosed in US 5,496,695; trityl hydrazides and formyl-phenyl-hydrazides with diverse auxiliary reducing agents as disclosed in US 5,545,505, US 5,545,507 and US 5,558,983; acrylonitrile compounds as disclosed in US 5,545,515 and US 5,635,339; and 2-substituted malonodialdehyde compounds as disclosed in US 5,654,130.
- The film-forming binder of the thermosensitive element may be all kinds of natural, modified natural or synthetic resins or mixtures of such resins, in which the at least one organic silver salt can be dispersed homogeneously either in aqueous or solvent media: e.g. cellulose derivatives, starch ethers, galactomannan, polymers derived from α,β-ethylenically unsaturated compounds such as polyvinyl chloride, after-chlorinated polyvinyl chloride, copolymers of vinyl chloride and vinylidene chloride, copolymers of vinyl chloride and vinyl acetate, polyvinyl acetate and partially hydrolyzed polyvinyl acetate, polyvinyl alcohol, polyvinyl acetals that are made from polyvinyl alcohol as starting material in which only a part of the repeating vinyl alcohol units may have reacted with an aldehyde, preferably polyvinyl butyral, copolymers of acrylonitrile and acrylamide, polyacrylates, polymethacrylates, polystyrene and polyethylene or mixtures thereof.
- Suitable water-soluble film-forming binders for use in thermographic recording materials according to the present invention are: polyvinyl alcohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polyvinylpyrrolidone, polyethyleneglycol, proteinaceous binders, polysaccharides and water-soluble cellulose derivatives. A preferred water-soluble binder for use in the thermographic recording materials of the present invention is gelatine.
- The binder to organic silver salt weight ratio is preferably in the range of 0.2 to 7, and the thickness of the thermosensitive element is preferably in the range of 5 to 50 µm. Binders are preferred which do not contain additives, such as certain antioxidants (e.g. 2,6-di-tert-butyl-4-methylphenol), or impurities which adversely affect the thermographic properties of the thermographic recording materials in which they are used.
- According to a sixteenth embodiment of the black and white monosheet thermographic recording material, according to the present invention, the thermosensitive element further contains a stabilizer.
- According to a seventeenth embodiment of the black and white monosheet thermographic recording material, according to the present invention, the thermosensitive element further contains a stabilizer selected from the group consisting of benzotriazole; substituted benzotriazoles; aromatic polycarboxylic acid, such as ortho-phthalic acid, 3-nitro-phthalic acid, tetrachlorophthalic acid, mellitic acid, pyromellitic acid and trimellitic acid and anhydrides thereof; 1-phenyl-5-mercaptotetrazole compounds in which the phenyl group is substituted with a substituent containing an optionally substituted aryl group, 1-(5-mercapto-1-tetrazolyl)-acetyl compounds represented by formula (V): wherein R3 is -NR4R5, -OR6 or an optionally substituted aryl or heteroaryl group; R4 is hydrogen or an optionally substituted alkyl, aryl or heteroaryl group; R5 is an optionally substituted aryl or heteroaryl group; and R6 is an optionally substituted aryl group; and compounds with two or more groups represented by formula (VI): where Q comprises the necessary atoms to form a 5- or 6-membered unsaturated heterocyclic ring, A is hydrogen, a counterion to compensate the negative charge of the thiolate group or two or more A groups provide a linking group between the two or more groups represented by formula (VI).
- According to an eighteenth embodiment of the black and white monosheet thermographic recording material, according to the present invention, the thermosensitive element further contains at least one optionally substituted aliphatic or carbocyclic polycarboxylic acid and/or anhydride thereof in a molar percentage of at least 15 with respect to all the organic silver salt(s) present and in thermal working relationship therewith. The polycarboxylic acid may be used in anhydride form or partially esterified on the condition that at least two free carboxylic acids remain or are available during the heat recording step.
- According to a nineteenth embodiment of the black and white monosheet thermographic material, according to the present invention, the thermosensitive element further contains photosensitive silver halide, thereby rendering the thermographic material photothermographic.
- The photosensitive silver halide used in the present invention may be employed in a range of 0.1 to 100 mol percent; preferably, from 0.2 to 80 mol percent; particularly preferably from 0.3 to 50 mol percent; especially preferably from 0.5 to 35 mol %; and especially from 1 to 12 mol % of substantially light-insensitive organic silver salt.
- The silver halide may be any photosensitive silver halide such as silver bromide, silver iodide, silver chloride, silver bromoiodide, silver chlorobromoiodide, silver chlorobromide etc. The silver halide may be in any form which is photosensitive including, but not limited to, cubic, orthorhombic, tabular, tetrahedral, octagonal etc. and may have epitaxial growth of crystals thereon.
- The silver halide used in the present invention may be chemically sensitized with a chemical sensitising merocyanine dye containing a thione group, and optionally with a chemical sensitizing agent such as a compound containing sulphur, selenium, tellurium etc., or a compound containing gold, platinum, palladium, iron, ruthenium, rhodium or iridium etc. in addition to sensitization with specific reducing agents, according to the present invention. The details of these procedures are described in T. H. James, "The Theory of the Photographic Process", Fourth Edition, Macmillan Publishing Co. Inc., New York (1977), Chapter 5, pages 149 to 169.
- The grain size of the silver halide particles can be determined by the Moeller Teller method in which the sample containing silver halide particles is sedimented upon a filter paper, which is submerged in electrolyte together with a negative platinum needle-shaped electrode and a reference electrode. The silver halide particles on the filter paper are slowly scanned individually with the needle-shaped electrode, whereupon the silver halide grains are individually electrochemically reduced at the cathode. This electrochemical reduction is accompanied by a current pulse, which is registered as a function of time and integrated to give the charge transfer Q for the electrochemical reduction of the silver halide particle, which is proportional to its volume. From their volume the equivalent circular grain diameter of each grain can be determined and therefrom the average particle size and size distribution.
- Surfactants and dispersants aid the dispersion of ingredients which are insoluble in the particular dispersion medium. The substantially light-insensitive thermographic material used in the present invention may contain one or more surfactants, which may be anionic, non-ionic or cationic surfactants and/or one or more dispersants. Suitable dispersants are natural polymeric substances, synthetic polymeric substances and finely divided powders, e.g. finely divided non-metallic inorganic powders such as silica.
- According to a twentieth embodiment of the black and white monosheet thermographic recording material, according to the present invention, the support is transparent or translucent. It is preferably a thin flexible carrier made transparent resin film, e.g. made of a cellulose ester, e.g. cellulose triacetate, polypropylene, polycarbonate or polyester, e.g. polyethylene terephthalate. The support may be in sheet, ribbon or web form and subbed if needs be to improve the adherence to the thereon coated thermosensitive element. The support may be dyed or pigmented to provide a transparent coloured background for the image.
- According to a twenty-first embodiment of the black and white monosheet thermographic recording material, according to the present invention, the thermosensitive element is provided with a protective layer. In general this protects the thermosensitive element from atmospheric humidity and from surface damage by scratching etc. and prevents direct contact of printheads or heat sources with the recording layers. Protective layers for thermosensitive elements which come into contact with and have to be transported past a heat source under pressure, have to exhibit resistance to local deformation and good slipping characteristics during transport past the heat source during heating. A slipping layer, being the outermost layer, may comprise a dissolved lubricating material and/or particulate material, e.g. talc particles, optionally protruding from the outermost layer.
Examples of suitable lubricating materials are a surface active agent, a liquid lubricant, a solid lubricant or mixtures thereof, with or without a polymeric binder. - The coating of any layer of the substantially light-insensitive thermographic material used in the present invention may proceed by any coating technique e.g. such as described in Modern Coating and Drying Technology, edited by Edward D. Cohen and Edgar B. Gutoff, (1992) VCH Publishers Inc., 220 East 23rd Street, Suite 909 New York, NY 10010, USA. Coating may proceed from aqueous or solvent media with overcoating of dried, partially dried or undried layers.
- Thermographic imaging is carried out by the image-wise application of heat either in analogue fashion by direct exposure through an image or by reflection from an image, or in digital fashion pixel by pixel either by using an infra-red heat source, for example with a Nd-YAG laser or other infra-red laser, with a substantially light-insensitive thermographic material preferably containing an infra-red absorbing compound, or by direct thermal imaging with a thermal head.
- In thermal printing image signals are converted into electric pulses and then through a driver circuit selectively transferred to a thermal printhead. The thermal printhead consists of microscopic heat resistor elements, which convert the electrical energy into heat via Joule effect. The operating temperature of common thermal printheads is in the range of 300 to 400°C and the heating time per picture element (pixel) may be less than 1.0ms, the pressure contact of the thermal printhead with the recording material being e.g. 200-1000g/linear cm, i.e. with a contact zone (nip) of 200 to 300 µm a pressure of 5000 to 50,000 g/cm2, to ensure a good transfer of heat.
- Activation of the heating elements can be power-modulated or pulse-length modulated at constant power. EP-A 654 355 discloses a method for making an image by image-wise heating by means of a thermal head having energizable heating elements, wherein the activation of the heating elements is executed duty cycled pulsewise. EP-A 622 217 discloses a method for making an image using a direct thermal imaging element producing improvements in continuous tone reproduction.
- Image-wise heating of the recording material can also be carried out using an electrically resistive ribbon incorporated into the material. Image- or pattern-wise heating of the recording material may also proceed by means of pixel-wise modulated ultrasound.
- Photothermographic recording materials, according to the present invention, may be exposed with radiation of wavelength between an X-ray wavelength and a 5 microns wavelength with the image either being obtained by pixel-wise exposure with a finely focused light source, such as a CRT light source; a UV, visible or IR wavelength laser, such as a Violet-laser, a He/Ne-laser or an IR-laser diode, e.g. emitting at 400nm, 630nm, 650nm, 780nm, 830nm or 850nm; or a light emitting diode, for example one emitting at 659nm; or by direct exposure to the object itself or an image therefrom with appropriate illumination e.g. with UV, visible or IR light.
For the thermal development of image-wise exposed photothermographic recording materials, according to the present invention, any sort of heat source can be used that enables the recording materials to be uniformly heated to the development temperature in a time acceptable for the application concerned e.g. contact heating, radiative heating, microwave heating etc. - Thermographic imaging can be used for the production of reflection type prints and transparencies, in particular for use in the medical diagnostic field in which black-imaged transparencies are widely used in inspection techniques operating with a light box.
- The invention is illustrated hereinafter by way of comparative examples and invention examples. The percentages and ratios given in these examples are by weight unless otherwise indicated. 2.05 g NaH (41 mmol as 50 % suspension in mineral oil) was added to 55 ml dry dioxane. 3.87 g (28.4 mmol) phenylurea was then added portionwise while keeping the reaction mixture under an argon atmosphere and then was heated for a few minutes to 50°C. After cooling the resulting mixture to room temperature, 6.31 g (42.6 mmol) of methyl 3,3-dimethoxypropionate was added, the mixture then refluxed for 2 hours, after which the resulting mixture was allowed to cool to room temperature. The cooled mixture was then poured into 280 ml 40% acetic acid, stored overnight in a refrigerator and then extracted twice with 140 ml chloroform. The collected chloroform fractions were dried over MgSO4 and evaporated under reduced pressure. The residue was crystallized from methanol using after treatment with activated carbon yielding 0.88 g (16%) of 1-phenyluracil (m.p. 244-245°C, Lit. 244-255°C (Winckelmann et al., Synthesis 1986, 1041)). 2.5 g (104 mmol, 80 % suspension) of NaH was added to a suspension of 10.5 g (93 mmol) uracil in 100 ml DMF and the reaction allowed to continue for 2 hours at room temperature. After 2 hours 10.73 mL (15 g, 123 mmol) allylbromide was added and the mixture heated for 2 hours at 70°C. The solvent was removed under reduced pressure and the residue treated with methylene chloride. The residue from the methylene chloride extract was a mixture of mono-allyl- and di-allyl-uracil. 5.5 g (39%) of 1-allyluracil was isolated by preparative column chromatography, using chlormoform/methanol 40:1 as eluant (m.p. 108-109°C, Lit. 105-109°C, Beilstein). A suspension of 10 g (89 mmol) of uracil and 24.6 g of potassium carbonate in 350 mL DMF was stirred for 12 hours at room temperature, after which 16.5 mL (139 mmol) of benzyl bromide was added and the reaction allowed to continue for 2 days at room temperature. The undissolved residue was removed by filtration and the solvent removed from the filtrate under reduced pressure. 150 mL water was added to the residue and the mixture extracted 3 times with 100 mL methylene chloride. The collected methylene chloride fractions were washed with water, dried over MgSO4 and evaporated to dryness under reduced pressure. The residue was treated with a small amount of chloroform/methanol 40:1 from which 1-benzyluracil partially crystallizes. 2.6 g 1-benzyluracil was isolated by filtration and the rest was isolated by preparative column chromatography, using chloroform/methanol 40:1 giving a yield of 3.95 g (22 %)(m.p. 168-170°C, Lit. 168-170°C, Kundu et al., J. Chem. Soc. Perkin Trans 1, 1985, 1295). 18.31 g (0.112 mol) of 2,4-dichloro-6-methylpyrimidine was added portionwise to 115 mL of a solution of sodium methanolate in methanol containing 0.23 mol sodium methanolate. After 1 hour at room temperature the reaction mixture was refluxed for 30 minutes. The solvent was removed under reduced pressure, the residue treated with 100 mL water and then extracted twice with 100 mL diethylether. The collected ether fractions were dried over MgSO4 and evaporated under reduced pressure. 14.2 g (82 %) of the crude intermediate 2,4-dimethoxy-6-methylpyrimidine was isolated, which was sufficiently pure to be used without further purification.
- 14.2 g (92 mmol) 2,4-dimethoxy-6-methylpyrimidine was dissolved in 210 mL iodomethane and the reaction allowed to continue for 2 days at room temperature. After 2 days, the excess of iodomethane was evaporated off under reduced pressure, the residue treated with 675 mL 1 N HCl and the resulting mixture refluxed for one and a half hours. After cooling to room temperature and neutralization with a concentrated sodium hydroxide solution, the water was removed under reduced pressure and the residue extracted with chloroform using a Soxhlet extractor. The chloroform was evaporated under reduced pressure and the crude compound recrystallized first from ethanol and then from water yielding 4.03 g (31%) of 1,6-dimethyluracil (m.p. 221-223°C). 10 g (79.3 mmol) of thymine was dissolved in 80 mL POCl3 and the mixture is refluxed for 5 hours. The excess of POCl3 was evaporated off under reduced pressure and the residue treated with ice-water and extracted 4 times with 100 mL diethylether. The collected ether fractions were extracted once with water, once with 1 N NaOH, a second time with water, dried over MgSO4 and finally evaporated under reduced pressure. 9.5 g (74 %) of the intermediate, 2,4-dichloro-5-methylpyrimidine, was isolated and could be used without further purification.
- 9.5 g (58.5 mmol) of 2,4-dichloro-5-methylpyrimidine was added portionwise to 45 mL of a solution of sodium methanolate in methanol containing 145 mmol sodium methanolate. After 10 minutes at room temperature, the reaction mixture was refluxed for 5 minutes, after which the solvent was evaporated under reduced pressure. The residue was treated with 100 mL water and the mixture extracted twice with diethylether. The collected diethylether fractions were washed with water, dried over MgSO4 and then evaporated under reduced pressure yielding 5.9 g (66%) of the intermediate 2,4-dimethoxy-5-methylpyrimidine (m.p. 61°C, Lit. m.p. 61°C).
- 5.9 g (18.7 mmol) of 2,4-dimethoxy-5-methylpyrimidine was dissolved in 80 mL iodomethane and the reaction allowed to continue for 2 days at room temperature. The excess iodomethane was evaporated under reduced pressure, the residue treated with 140 mL 1 N HCl and the mixture refluxed for one and a half hour. 1,5-dimethyluracil crystallized from the medium and was isolated by filtration, washed twice with water and dried yielding 4.4 g of 1,4-dimethyluracil (m.p. unsharp 273-291, Lit. 280-291). A solution of 13.1 g (0.10 mol) ethoxycarbonylisothiocyanaat in 15 mL diethylether was added dropwise to a solution of 15.3 g (0.10 mol) 1-morpholinocyclopentene in 60 mL diethylether. After 1 hour at room temperature, 1-(ethoxycarbonylthiocarbamoyl)-2-morpholino-cyclopentene precipitated from the medium and was isolated by filtration. The isolated intermediate, 1-(ethoxycarbonylthio-carbamoyl)-2-morpholinocyclopentene, was washed with diethylether and dried yielding 24.7 g (87%) of 1-(ethoxycarbonylthiocarbamoy)-2-morpholinocyclopentene (m.p. 114-118°C, Lit. 124-125°C).
- 14.6 g (51 mmol) 1-(ethoxycarbonylthiocarbamoy)-2-morpholinocyclopentene was dissolved in 145 mL of a 40% solution of methylamine in water. After 12 hours at room temperature, the excess of methylamine was removed under reduced pressure and the pH of the residual solution adjusted to pH = 3 with concentrated hydrochloric acid. 1-methyl-2-oxo-4-thiono-1,2,3,4,6,7-hexahydro-5H-cyclopenta[d]pyrimidine precipitated from the medium, was isolated by filtration, washed with water and finally dried yielding 8 g (86 %) of the intermediate 1-methyl-2-oxo-4-thiono-1,2,3,4,6,7-hexahydro-5H-cyclopenta[d]pyrimidine (m.p. 245-250°C, Lit. 245-249°C).
- 5.47 g (30 mmol) 1-methyl-2-oxo-4-thiono-1,2,3,4,6,7-hexahydro-5H-cyclopenta[d]pyrimidine was dissolved in 30 mL 1N NaOH. 2.18 mL (5.0 g, 35 mmol) iodomethane was added and the reaction allowed to continue for 30 minutes at room temperature during which the iodomethane gradually dissolved. The pH of the reaction mixture was adjusted to pH = 7 with 2N HCl and then extracted 3 times with 50 mL chloroform. The collected chloroform fractions were washed with water, dried over MgSO4 and evaporated under reduced pressure. The residue was treated with 40 mL diethylether/hexane (1:1) and 5.16 g (88 %) of the intermidiate 1-methyl-4-methylthio-2-oxo-1,2,6,7-tetrahydro-5H-cyclopenta[d]pyrimidine was obtained after filtration and drying (m.p. 139-140°C, Lit. 141-142°C).
- 7.54 g (38.5 mmol) of 1-methyl-4-methylthio-2-oxo-1,2,6,7-tetrahydro-5H-cyclopenta[d]pyrimidine was refluxed for 2 hours in 200 mL 2N HCl. After cooling to room temperature, 1-methyl-2,4-dioxo-1,2,3,4,6,7-hexahydro-5H-cyclopenta[d]pyrimidine precipitated from the medium, was filtered off, washed with water and dried to yield 3.13 g (49 %) of1-methyl-2,4-dioxo-1,2,3,4,6,7-hexahydro-5H-cyclopenta[d]pyrimidine (m.p. 250-251°C, Lit. 248-249°C). 6.00 g (42.9 mmol) 5,6-dimethyluracil was dissolved in 26 mL of hexamethyldisilazane and 2.1 mL DMF. The mixture was heated for 11 hours at 150°C and the excess of hexamethyldisilazane was removed under reduced pressure. Toluene was added to the mixture and evaporated off under reduced pressure to remove any residual hexamethyldisilazane. The residue was dissolved in 25 mL of iodomethane, refluxed for 2 hours, the excess iodomethane then evaporated off under reduced pressure and the residue recrystallized from deionised water yielding after drying 5.76 g (87%) of 1,5,6-trimethyluracil (m.p. 254-257°C, lit. 256-258°C). 2.12 g (15 mmol) 6-amino-1-methyluracil was suspended in 30 mL 1N HCl and a solution of 1.38 g NaNO2 in 10 mL water added over 10 minutes. After 1 hour at room temperature, the pH was adjusted to 5 with a concentrated ammonia solution and the purple nitroso-intermediate precipitated from the medium. After filtering off, washing with water and drying 2.42 g (92%) of the intermediate 6-amino-1-methyl-5-nitrosouracil was obtained.
- To a suspersion of 2.42 g (14.3 mmol) of the 6-amino-1-methyl-5-nitrosouracil in water heated to 90°C, was added 30 mL of a 38% solution of NaHSO3 over 10 minutes and the reaction allowed to continue until the reaction mixture was completely decolourized. After cooling the reaction mixture to 0°C, 5,6-diamino-1-methyluracil crystallized from the medium. After filtering off, washing with water, ethanol and diethylether and drying 2.14 g (80%) of the intermediate 5,6-diamino-1-methyluracil was isolated.
- 8.71 g (55.8 mmol) of 5,6-diamino-1-methyluracil was dissolved in 100 mL water and 50 mL acetic acid upon heating. After cooling to room temperature, a solution of 3.86 g (55.9 mmol) NaNO2 in 17 mL water was added over 5 minutes. The mixture was stirred for 5 minutes and then refluxed for a short time. After standing for two days at room temperature, 3-methyl-8-aza-9H-xanthine crystallized from the mixture. After filtering off, drying, recrystallization from water/ethanol 1:1 and drying 3.57 g (38%) of 3-methyl-8-aza-9H-xanthine was obtained (m.p. 313-320°C). 15.8 g (0.136 mol) isobutylurea (prepared from potassium cyanate and isobutylamine by refluxing the mixture at pH 4 to 5 for 1 hour) and 12.7 g (0.149 mol) cyanoacetic acid were dissolved in 39 mL acetic anhydride and heated to 80°C for 2 hours. After cooling the mixture was treated with 70 mL diethylether, then cooled to 0°C whereupon 1-cyanoacetyl-3-isobutylurea precipitates out. After filtering off, washing with diethylether and drying, 16.23 g (0.089 mol) of 1-cyanoacetyl-3-isobutylurea was suspended in 40 mL water and 20 mL ethanol and the mixture heated to 85°C. 10.5 mL of a 10%-NaOH solution was then added dropwise and the reaction allowed to continue for 45 minutes at 85°C, keeping the reaction mixture slightly alkaline. After cooling to room temperature, the reaction mixture was acidified with a 2N HCl-solution and the mixture then further cooled to 0°C whereupon 6-amino-1-isobutyluracil precipitates out. After filtering off, washing with water and drying 6.46 g (26%) of the intermediate 6-amino-1-isobutyluracil was obtained (m.p. 269-272°C, Lit. 271-272°C).
- 15.0 g (81.9 mmol) of 6-amino-1-isobutyluracil was suspended in 165 mL 1N HCl and a solution of 7.54 g (109 mmol) NaNO2 in 55 mL water then added over 10 minutes. After 1 hour at room temperature, the pH was adjusted to 5 with a concentrated ammonia solution, whereupon the purple nitroso-compound precipitated from the medium. After filtering off, washing with water and drying 14.1 g (81%) of the intermediate 6-amino-1-isobutyl-5-nitrosouracil was obtained (m.p. 238-242°C, Lit. 235-236°C).
- After suspending 19.4 (91.5 mmol) 6-amino-1-isobutyl-5-nitrosouracil in 195 mL water and heating the mixture heated 90°C, 214 mL of a 38% solution of NaHSO3 was added dropwise and the reaction is allowed to continue until the mixture was completely decolourized. The reaction mixture was then concentrated to one fifth of its volume, whereupon 5,6-diamino-1-isobutyluracil crystallized out from the medium. After filtering, washing with water and drying 15.4 g (85 %) of the intermediate 5,6-diamino-1-isobutyluracil was obtained.
- After dissolving 19.8 g (100 mmol) 5,6-diamino-1-isobutyluracil in 1 liter of 1N HCl at 70°C, 186.3 g of glyoxal sodium bisulfite addition compound hydrate was added and the mixture refluxed for 1 hour. After extracting the mixture several times with ethyl acetate, the collected ethyl acetate fractions were washed with water, dried over MgSO4 and evaporated. The crude product was purified by preparative column chromatography using chloroform/methanol 9:1 as eluant yielding 4.25 g (18%)of 1-isobutyl-1H-pteridine-2,4-dione (m.p. 200-201°C, Lit. 195-197°C).
- 14.34 g (101.7 mmol) 6-amino-1-methyluracil and 26 mL (108 mmol) 1,1,3,3-tetraethoxypropane are dissolved in a mixture of 250 mL ethanol and 1 liter water and refluxed for 3 hours. After cooling down to room temperature, the precipitated intermediate is isolated by filtration washed with water and dried. 7.71 g of the condensation product of the acetal and the amino group is added to 12.5 mL concentrated sulfuric acid and the mixture is heated to 160°C. After cooling down to room temperature, the mixture is poured into 125 g ice. The crude product precipitates from the medium, is isolated by filtration, washed to neutral pH and dried. 4.84 g of the crude product is dissolved in 2 1 refluxing methanol. 300 mL silicagel is added and the mixture is evaporated under reduced pressure. The crude product loaded onto the silicagel is purified by preparative column chromatography using chloroform/methanol 9:1. 3.49g (19%) 1-methylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione is isolated (m.p. 277-285°C, Lit. 285°C).
- Subbing layer Nr. 01 on the emulsion side of the support had the composition:
copolymer of 88% vinylidene chloride, 10% methyl acrylate and 2% itaconic acid 79.1 mg/m2 Kieselsol® 100F, a colloidal silica from BAYER 18.6 mg/m2 Mersolat® H, a surfactant from BAYER 0.4 mg/m2 Ultravon® W, a surfactant from CIBA-GEIGY 1.9 mg/m2 - Ingredients in the thermosensitive element in addition to the above-mentioned ingredients:
- BL5HP =
- S-LEC BL5HP, a polyvinyl butyral from SEKISUI;
- Oil =
- BAYSILON, a silicone oil from BAYER;
- VL =
- DESMODUR VL, a 4,4'-diisocyanatodiphenylmethane from BAYER;
-
- R01 =
- 3,4-dihydroxybenzonitrile;
- R02 =
- 3,4-dihydroxybenzophenone;
-
- S01 =
- glutaric acid
- S02 =
- tetrachlorophthalic acid anhydride
- S03 =
- benzotriazole
- Ingredients in the protective layer:
- ERCOL™ 48 20 =
- a polyvinylalcohol from ACETEX EUROPE;
- LEVASIL™ VP AC 4055 =
- a 15% aqueous dispersion of colloidal silica with acid groups predominantly neutralized with sodium ions and a specific surface are of 500 m2/g, from BAYER AG has been converted into the ammonium salt;
- ULTRAVON™ W =
- 75-85% concentrate of a sodium arylsulfonate from Ciba Geigy converted into acid form by passing through an ion exchange column;
- SYLOID™ 72 =
- a silica from Grace;
- SERVOXYL™ VPDZ 3/100 =
- a mono [isotridecyl polyglycolether (3 EO)] phosphate, from SERVO DELBEN B.V.;
- SERVOXYL™ VPAZ 100 =
- a mixture of monolauryl and dilauryl phosphate, from SERVO DELDEN B.V.;
- MICROACE TALC P3 =
- an Indian talc from NIPPON TALC;
- RILANIT™ GMS =
- a glycerine monotallow acid ester, from HENKEL AG
- TMOS =
- tetramethylorthosilicate hydrolyzed in the presence of methanesulfonic acid.
- A screening method was developed using a silver hydrosol, which was prepared 20 to 30 minutes before the compound TA-1 was screened. 1 mL of a 0.001M solution of the compound being screened was then added to 10 mL of this yellow silver hydrosol. If the silver hydrosol changed colour within one hour, 10 mL of a 0.5% aqueous gelatin solution was added 10s after this change of colour to prevent further silver aggregation. If no change in colour was observed after 1 hour, the concentration of the compound being screened in the hydrosol was increased from 10-4M to 10-3M. Control experiments were carried out with each batch of silver hydrosol to check its performance with a 10-3M solution of BOD06, a compound giving immediate aggregation.
- It is well known that the absorption of silver nano-particles shifts upon aggregation to ever longer wavelengths with ever increasing aggregate size. This shift is perceived as a change in colour from a very pale yellow colour for 10 nm silver particles to orange to red to purple to blue. The degree of aggregation was therefore assessed visually on a scale of 6 levels ranging from ++++ to --, according to the following criteria:
Degree of aggregation of ++++ = Strong dark purple-blue colour Degree of aggregation of +++ = Dark red to purple colour Degree of aggregation of ++ = Red colour Degree of aggregation of + = Orange-red colour Degree of aggregation of - = Weak orange colour Degree of aggregation of -- = No colour change - The diffusion experiments were carried out with the surface of a 15g/m2 layer of S-LEC BL5HP containing the compound being screened in a concentration of 15 mol% with respect to a quantity of silver behenate a quarter of that of the S-LEC BL5HP coverage coated on a glass support in contact with the surface of a 10g/m2 layer of S-LEC BL5HP containing glutaric acid in a concentration of 24 mol% with respect to a quantity of silver behenate a quarter of that of the S-LEC BL5HP coverage coated on a SERS-probe. In this configuration the SERS-probe was uppermost. The diffusion experiment was carried out by heating the S-LEC BL5HP-coated glass support with the glass support in contact with an electrically heated plate at a temperature of 150°C for a predetermined time. The configuration was then removed from the heated plate and a Raman spectrum was taken by Dilor XY-laser spectroscopy with the 514 nm line of a Coherent Innova 70C argon/krypton mixed gas laser at 12mW through the glass plate to ascertain whether the ingredient being screened had diffused to the silver nano-particles in the SERS-probe on the basis of its surface-enhanced Raman spectrum due to contact with silver using the so-called "Surface Enhanced Raman Scattering" (SERS)-effect.
- The coated glass support and the coated SERS-probe were prepared by coating the glass support and SERS-probe respectively with a 2-butanone solution of S-LEC BL5HP and the ingredient being screened and glutaric acid respectively, drying at room temperature and finally heating the coated glass support and the coated SERS-probe for 10 minutes at 85°C.
- The SERS-probe was prepared by adding an aqueous solution of silver nitrate to an aqueous solution of potassium borohydride and stabilizing the 5 to 10 nm silver nuclei by adding polyvinyl alcohol, the final composition being 0.01M in silver nitrate, 0.015M in potassium borohydride and 1% in polyvinyl alcohol. The resulting silver hydrosol was then added to a solution of gelatin containing a hardener, a biocide, an inorganic pigment and a hardening regulator. The resulting mixture was coated to a dry thickness of 100 nm onto glass plates giving a thin, yellow transparent film containing silver nuclei 5 to 10 nm in diameter. The coated glass plate was then immersed in deionised water at 40°C for 15 minutes and then in a 0.001M aqueous solution of silver nitrate containing 0.5% of gelatin and 0.001M in ascorbic acid, a reducing agent for silver cations, at 25°C. Electroless deposition of silver occurred on the silver nuclei rather than nucleation of new particle, because nucleation requires much more energy than growth of the silver nuclei already present. Finally the layer containing 90 nm silver particles was rinsed with deionised water and dried. These 90nm silver particles were required for the laser wavelength used in these experiments (514.5 nm). Other silver particle sizes can be obtained, depending upon the composition of the bath, its temperature and the time of immersion.
- Reference Raman spectra were obtained by placing a drop of an aqueous solution of the molecules given in Table 1 for the particular INVENTION or COMPARATIVE EXAMPLE onto the SERS-probe and measuring the Raman spectrum by Dilor XY-laser spectroscopy with the 514 nm line of a Coherent Innova 70C argon/krypton mixed gas laser at 12mW measured surface-enhanced as a result of the "Surface Enhanced Raman Scattering" (SERS)-effect with silver.
- The diffusion result obtained with TA-1 and those for BOD01 to BOD05 are given in Table 1 below.
Invention example nr. aggregation assessment aggregation time of silver nano-particles [s] Diffusion time through BL5HP with glutaric acid at 150°C [s] 1 TA-1 +++ 10 120 Comparative example nr. 1 BOD01 +++ 10 5 2 BOD02 ++ 10 30 3 BOD03 + 10 30 4 BOD04 + 10 10 5 BOD05 + 10 - - TA-1, according to the present invention, produced a degree of silver particle aggregation of +++ within 10s and exhibited a diffusion time at 150°C through S-LEC BL5HP in the presence of glutaric acid of 120s.
- Compounds BOD01 to BOD05 all belong to the prior art and produced degrees of silver particle aggregation between + and +++ within 10s and exhibited diffusion times at 150°C through S-LEC BL5HP in the presence of glutaric acid between 5 and 30s, which results in undesirable rapid diffusion to the surface of thermographic materials.
- The substantially light-insensitive thermographic materials of COMPARATIVE EXAMPLES 6 to 13 and INVENTION EXAMPLES 2 to 6 were prepared by coating a dispersion with the following ingredients in 2-butanone onto a 175µm thick blue-pigmented polyethylene terephthalate support with CIELAB a*- and b*- values of -9.5 and -17.9 respectively subbed on the emulsion-coated side with subbing layer 01 giving layers after drying at 85°C for 3 minutes in a drying cupboard with the compositions given in Table 2 below.
Comparative example nr. toning agent of present invention AgBeh cover age [g/m2] BL5HP [g/ m2] R01 mol% vs AgB R02 mol% vs AgB S01 mol% vs AgB S02 mol% vs AgB S03 mol% vs AgB VL [g /m2] Oil [g/ m2] type mol% vs AgB 6 BOD01 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 7 BOD02 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 8 BOD03 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 9 BOD04 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 10 BOD01/BOD05 5/10 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 11 BOD05 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 12 - - 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 13 CTA-I-2 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 Invention example nr. 2 CTA-I-2/TA-1 5/10 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 3 TA-1 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 4 TA-1/BOD02 5/10 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 5 TA-1/BOD03 10/5 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 6 TA-1/BOD04 10/5 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 ERCOL™ 48 20 2.1g/m2 LEVASIL™ VP AC 4055 1.05g/m2 ULTRAVON™ W 0.075g/m2 SYLOID™ 72 0.09 g/m2 SERVOXYL™ VPDZ 3/100 0.075g/m2 SERVOXYL™ VPAZ 100 0.075g/m2 MICROACE TALC P3 0.045g/m2 RILANIT™ GMS 0.15g/m2 TMOS 0.87g/m2 (assuming that the TMOS was completely converted to SiO2) - The substantially light-insensitive thermographic recording materials of COMPARATIVE EXAMPLES 6 to 13 and INVENTION EXAMPLES 2 to 6 were printed using a DRYSTAR™ 4500 printer from AGFA-GEVAERT with a resolution of 508 dpi which had been modified to operate at a printing speed of 14 mm/s and a line-time of 3.5 ms instead of 7.1 ms and in which the 75 µm long (in the transport direction) and 50 µm wide thermal head resistors were power-modulated to produce different image densities.
- The image tone of fresh prints made with the substantially light-insensitive thermographic recording materials of COMPARATIVE EXAMPLES 6 to 13 and INVENTION EXAMPLES 2 to 6 was assessed on the basis of the L*, a* and b* CIELAB-values at optical densities, D, of 1.0 and 2.0 and the results given in Tables 3 to 8.
- The diffusion of ingredients and reaction products of the imaging forming process to the surface of the protective layer was assessed visually according to a scale of 0 to 5 according to the following criteria:
diffusion assessment of 0: no diffusion diffusion assessment of 1: first indication of diffusion upon examination under an intense lighting after rubbing with a paper tissue diffusion assessment of 2: visible in daylight after rubbing with a paper tissue diffusion assessment of 3: just visible in daylight without rubbing with a paper tissue diffusion assessment of 4: moderately strong deposition without rubbing with a paper tissue diffusion assessment of 5: very strong deposition without rubbing with a paper tissue Comparative Example Nr. Toning agent CIELAB values for fresh prints assessment of post-printing diffusion after 3d/57°C/34%RH type mol% vs AgB for D=1.0 for D=2.0 a* b* a* b* 13 CTA-I-2 15 +10.16 -0.38 +11.60 +0.70 5 Invention Example Nr. 2 CTA-I-2/TA-1 5/10 +4.94 -3.5 +8.61 -2.98 3 3 TA-1 15 +7.71 -2.64 +11.93 -0.01 5 Invention Example Nr. Toning agent CIELAB values for fresh prints assessment of post-printing diffusion after 3d/57°C/34%RH type mol% vs AgB for D=1.0 for D=2.0 a* b* a* b* 3 TA-1 15 +7.71 -2.64 +11.93 -0.01 5 4 TA-1/BOD02 5/10 -1.37 -8.42 +1.99 -5.03 4 Comparative Example nr. 7 BOD02 15 +0.99 -7.90 +2.67 -5.25 5 Invention Example Nr. Toning agent CIELAB values for fresh prints for D=1.0 for D=2.0 type mol% vs AgB a* b* a* b* 3 TA-1 15 +7.71 -2.64 +11.93 -0.01 5 TA-1/BOD03 10/5 -1.77 -7.6 +1.08 -3.85 Comparative Example nr. 8 BOD03 15 -1.89 -6.95 -1.64 -3.96 Invention Example Nr. Toning agent CIELAB values for fresh prints type mol% vs AgB for D=1.0 for D=2.0 a* b* a* b* 3 TA-1 15 +7.71 -2.64 +11.93 -0.01 6 TA-1/BOD04 10/5 -1.54 -6.53 +1.61 -2.62 Comparative Example nr. 9 BOD04 15 -4.37 -5.24 -2.52 -3.10 Comparative Example Nr. Toning agent CIELAB values for fresh prints assessment of post-printing diffusion after 3d/57°C/34%RH type mol% vs AgB for D=1.0 for D=2.0 a* b* a* b* 6 BOD01 15 -3.63 -8.75 -2.41 -5.73 5 10 BOD01/BOD05 5/10 -3.74 -6.39 -1.25 -4.37 5 11 BOD05 15 -3.67 -7.48 -1.66 -5.24 5 Invention Example Nr. Toning agent a* CIELAB-values for fresh prints type mol% vs AgB for D=1.0 for D=2.0 3 TA-1 15 +7.71 +11.93 Comparative Example nr. 12 - - +11.71 +14.81 - The substantially light-insensitive thermographic materials of COMPARATIVE EXAMPLES 14 to 18 and INVENTION EXAMPLES 7 to 20 were prepared by coating a dispersion with the following ingredients in 2-butanone onto a 175µm thick blue-pigmented polyethylene terephthalate support with CIELAB a*- and b*- values of -9.5 and -17.9 respectively subbed on the emulsion-coated side with subbing layer 01 giving layers after drying at 85°C for 3 minutes in a drying cupboard with the compositions given in Table 9 below.
Comparative example nr. toning agent of present invention AgBeh cover age [g/m2] BL5HP [g/ m2] R01 mol% vs AgB R02 mol% vs AgB S01 mol% vs AgB S02 mol% vs AgB S03 mol% vs AgB VL [g /m2] Oil [g/ m2] type mol% vs AgB 14 COMP-1 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 15 COMP-2 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 16 COMP-3 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 17 BOD08 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 18 - - 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 Invention example nr. 7 TA-1 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 8 TA-3 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 9 TA-4 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 10 TA-5 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 11 TA-6 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 12 TA-7 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 13 TA-8 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 14 TA-9 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 15 TA-10 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 16 TA-11 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 17 TA-12 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 18 TA-15 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 19 TA-16 15 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 20 TA-16/BOD08 2/13 4.15 16.6 35 45 24 4.91 9.84 0.19 0.037 ERCOL™ 48 20 2.1g/m2 LEVASIL™ VP AC 4055 1.05g/m2 ULTRAVON™ W 0.075g/m2 SYLOID™ 72 0.09 g/m2 SERVOXYL™ VPDZ 3/100 0.075g/m2 SERVOXYL™ VPAZ 100 0.075g/m2 MICROACE TALC P3 0.045g/m2 RILANIT™ GMS 0.15g/m2 TMOS 0.87g/m2 (assuming that the TMOS was completely converted to SiO2) - Prints were produced with the thermographic recording materials of COMPARATIVE EXAMPLES 14 to 18 and INVENTION EXAMPLES 7 to 20 as described for the thermographic recording materials of COMPARATIVE EXAMPLE 6 to 13 and INVENTION EXAMPLES 2 to 6 and the image tone of fresh prints assessed as for the thermographic recording materials of COMPARATIVE EXAMPLE 6 to 13 and INVENTION EXAMPLES 2 to 6. The results are given in Tables 10 and 11.
Comparative Example Nr. Toning agent CIELAB values for fresh prints type mol% vs AgB for D=1.0 for D=2.0 a* b* a* b* 14 COMP-1 15 +12.38 +0.65 +14.42 +0.29 15 COMP-2 15 +3.60 -1.70 +4.56 -1.47 16 COMP-3 15 +17.36 +4.15 +20.62 +3.98 18 - - +10.91 -0.73 +15.93 +0.11 Invention Example nr. 7 TA-1 15 +6.31 -4.11 +8.13 -1.09 8 TA-3 15 +4.53 -5.87 +9.36 -4.84 9 TA-4 15 +4.73 -6.48 +7.12 -5.64 10 TA-5 15 +7.52 -5.55 +10.06 -4.93 11 TA-6 15 -0.77 -9.18 +1.51 -6.94 12 TA-7 15 +3.76 -8.36 +4.61 -5.64 13 TA-8 15 +6.05 -7.51 +7.85 -5.07 14 TA-9 15 +3.79 -9.04 +6.88 -7.22 15 TA-10 15 +4.25 -6.65 +6.54 -5.81 16 TA-11 15 +9.51 -5.38 +13.34 -3.24 17 TA-12 15 +4.96 -9.42 +8.92 -6.60 18 TA-15 15 +6.67 -6.34 +9.84 -4.80 19 TA-16 15 +2.41 -6.77 +4.10 -5.81 Comparative Example Nr. Toning agent CIELAB values for fresh prints type mol% vs AgB for D=1.0 for D=2.0 a* b* a* b* 17 BOD08 15 -0.91 -8.44 +1.27 -6.02 Invention Example nr. 19 TA-16 15 +2.41 -6.77 +4.10 -5.81 20 TA-16/BOD08 2/13 -1.70 -9.21 +0.50 -6.68
The present invention may include any feature or combination of features disclosed herein either implicitly or explicitly or any generalisation thereof irrespective of whether it relates to the presently claimed invention. In view of the foregoing description it will be evident to a person skilled in the art that various modifications may be made within the scope of the invention.
Claims (11)
- A black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, characterized in that the at least one toning agent is represented bv formula (I): wherein R1 is a hydrogen atom or an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted; R2 and R3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonato, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, heterocyclic or heteroaryl group all of which may be optionally substituted; R2 and R3 may together represent the atoms necessary to complete a heteroaromatic ring with no more than one nitrogen atom, an alicyclic ring or a heterocyclic ring which all may be optionally substituted; X is a carbonyl group, or is -N-R5, where R5 is an alkyl group; and with with the proviso that R1 may not be a hydrogen atom if both R2 and R3 are both hydrogen atoms.
- Thermographic recording material according to claim 1, wherein the toning agent represented by formula (I) is represented by formula (II) : wherein R1 is a hydrogen atom or an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted; R2 and R3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonato, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, heterocyclic or heteroaryl group all of which may be optionally substituted; R2 and R3 may together represent the atoms necessary to complete a heteroaromatic ring with no more than one nitrogen atom, an alicyclic ring or a heterocyclic ring which all may be optionally substituted; and with the proviso that R1 may not be a hydrogen atom if both R2 and R3 are both hydrogen atoms.
- Thermographic recording material according to claim 1 or 2, wherein said substituent for R1 is selected from the group consisting of alkyl, aryl, alkoxy, hydroxy, carboxy, ester, amide, sulfo and sulfoalkyl groups.
- Thermographic recording material according to any one of claims 1 to 3, wherein said substituent for R2 is selected from the group consisting of alkyl, aryl, alkoxy, hydroxy, carboxy, ester, amide, sulfo and sulfoalkyl groups.
- Thermographic recording material according to any one of claims 1 to 4, wherein said substituent for R3 is selected from the group consisting of alkyl, aryl, alkoxy, hydroxy, carboxy, ester, amide, sulfo and sulfoalkyl groups.
- Thermographic recording material according to any of the preceding claims, wherein said thermosensitive element further contains at least one toning agent selected from the group consisting of compounds according to formula (III), wherein R5 is an alkyl group optionally substituted with a hydroxy, carboxy, carboxy ester, acyl or carbonato group; X is S, O or N-R10; R6 is an optionally substituted alkyl group; R6, R7, R8 and R9 independently represent a hydrogen atom, a halogen atom or an alkyl, an alkoxy, a thio-alkoxy, a nitro, a cyano, a carboxy, a carboxy ester, an acyl, an aldehyde, an acylamido, a sulphonamido, an acylamino, a carbonato, a hydroxy or an aryl group or at least one of R6 and R7, R7 and R8 and R8 and R9 independently represent the atoms necessary to form a carbocyclic or heterocyclic group or at least one of R5 and R9 and R6 and R10 independently represent the atoms necessary to form a heterocyclic ring; compounds represented by formula (IV) : wherein R11 is an optionally substituted alkyl group; Y is S, O or N-R14; R14 is an optionally substituted alkyl group; R12 and R13 independently represent a hydrogen atom, a halogen atom or an alkyl, an alkoxy, a thio-alkoxy, a nitro, a cyano, a carboxy, a carboxy ester, an acyl, an aldehyde, an acylamido, a sulphonamido, an acylamino, a carbonato, a hydroxy or an aryl group or R12 and R13 represent the atoms necessary to form a heterocyclic or a non-aromatic carbocyclic ring or at least one of R12 and R14 and R13 and R11 independently represent the atoms necessary to form a heterocyclic ring; and both R12 and R13 cannot both be an alkyl group, phthalazinone, phthalazinone derivatives, pyridazone, pyridazone derivatives, benzoxazine dione, benzoxazine dione derivatives, naphthoxazine dione and naphthoxazine dione derivatives.
- Thermographic recording material according to claim 7, wherein said at least one benzoxazine dione derivative is selected from the group consisting of benzo[e][1,3]oxazine-2,4-dione, 7-methyl-benzo[e][1,3]oxazine-2,4-dione, 7-methoxy-benzo[e][1,3]oxazine-2,4-dione, 7-butoxy-benzo[e][1,3]oxazine-2,4-dione, 7-(ethylcarbonato)-benzo[e][1,3]oxazine-2,4-dione,
- Thermographic recording material according to any of the preceding claims, wherein said thermosensitive element further contains photosensitive silver halide.
- Thermographic recording material according to any one of claims 1 to 8, wherein said thermographic recording material is a substantially light-insensitive thermographic recording material.
- Use of compounds represented bv formula (I): wherein R1 is a hydrogen atom or an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted; with the proviso that R1 may not be a hydrogen atom if both R2 and R3 are both hydrogen atoms; R2 and R3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonato, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, heterocyclic or heteroaryl group all of which may be optionally substituted; R2 and R3 may together represent the atoms necessary to complete a heteroaromatic ring with no more than one nitrogen atom, an alicyclic ring or a heterocyclic ring which all may be optionally substituted; and X is a carbonyl group, or is -N-R4, where R4 is an alkyl group, as toning agents in imaging processes involving silver particles.
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4030930A (en) * | 1974-02-15 | 1977-06-21 | Fuji Photo Film Co., Ltd. | Heat-developable light-sensitive material |
US6146823A (en) * | 1998-04-08 | 2000-11-14 | Fuji Photo Film Co., Ltd | Thermographic image-recording element |
US20020012888A1 (en) * | 2000-06-15 | 2002-01-31 | Yasunori Wada | Photothermographic material |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5288329A (en) * | 1976-01-20 | 1977-07-23 | Fuji Photo Film Co Ltd | Image receiving material |
JPH11102047A (en) * | 1997-09-26 | 1999-04-13 | Fuji Photo Film Co Ltd | Heat-developable image forming material |
JP2000314939A (en) * | 1999-04-30 | 2000-11-14 | Fuji Photo Film Co Ltd | Heat-developable photosensitive material |
-
2003
- 2003-12-09 EP EP03104600A patent/EP1435298A3/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4030930A (en) * | 1974-02-15 | 1977-06-21 | Fuji Photo Film Co., Ltd. | Heat-developable light-sensitive material |
US6146823A (en) * | 1998-04-08 | 2000-11-14 | Fuji Photo Film Co., Ltd | Thermographic image-recording element |
US20020012888A1 (en) * | 2000-06-15 | 2002-01-31 | Yasunori Wada | Photothermographic material |
Non-Patent Citations (3)
Title |
---|
DATABASE WPI Section Ch, Week 197736 Derwent Publications Ltd., London, GB; Class E13, AN 1977-63652Y XP002279437 -& JP 52 088329 A (FUJI PHOTO FILM CO LTD) 23 July 1977 (1977-07-23) * |
DATABASE WPI Section Ch, Week 199925 Derwent Publications Ltd., London, GB; Class E13, AN 1999-297998 XP002279438 -& JP 11 102047 A (FUJI PHOTO FILM CO LTD) 13 April 1999 (1999-04-13) * |
DATABASE WPI Section Ch, Week 200119 Derwent Publications Ltd., London, GB; Class E19, AN 2001-184959 XP002279436 -& JP 2000 314939 A (FUJI PHOTO FILM CO LTD) 14 November 2000 (2000-11-14) * |
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