EP0889355A1 - (Photo) thermographic material with a blue background - Google Patents
(Photo) thermographic material with a blue background Download PDFInfo
- Publication number
- EP0889355A1 EP0889355A1 EP98202002A EP98202002A EP0889355A1 EP 0889355 A1 EP0889355 A1 EP 0889355A1 EP 98202002 A EP98202002 A EP 98202002A EP 98202002 A EP98202002 A EP 98202002A EP 0889355 A1 EP0889355 A1 EP 0889355A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- recording material
- substantially light
- insensitive
- silver salt
- photo
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 97
- -1 silver halide Chemical class 0.000 claims abstract description 55
- 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 53
- 229910052709 silver Inorganic materials 0.000 claims abstract description 48
- 239000004332 silver Substances 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 38
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 27
- 239000001045 blue dye Substances 0.000 claims abstract description 24
- 239000011230 binding agent Substances 0.000 claims abstract description 23
- 239000001055 blue pigment Substances 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 230000003197 catalytic effect Effects 0.000 claims abstract description 7
- 239000000975 dye Substances 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000000049 pigment Substances 0.000 claims description 13
- 230000005855 radiation Effects 0.000 claims description 7
- 235000019239 indanthrene blue RS Nutrition 0.000 claims description 5
- UHOKSCJSTAHBSO-UHFFFAOYSA-N indanthrone blue Chemical compound C1=CC=C2C(=O)C3=CC=C4NC5=C6C(=O)C7=CC=CC=C7C(=O)C6=CC=C5NC4=C3C(=O)C2=C1 UHOKSCJSTAHBSO-UHFFFAOYSA-N 0.000 claims description 5
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000001007 phthalocyanine dye Substances 0.000 claims description 3
- 150000002941 palladium compounds Chemical class 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 56
- 230000000052 comparative effect Effects 0.000 description 26
- 239000000839 emulsion Substances 0.000 description 22
- 239000011248 coating agent Substances 0.000 description 18
- 238000000576 coating method Methods 0.000 description 18
- 239000002245 particle Substances 0.000 description 15
- 239000011241 protective layer Substances 0.000 description 15
- AQRYNYUOKMNDDV-UHFFFAOYSA-M silver behenate Chemical compound [Ag+].CCCCCCCCCCCCCCCCCCCCCC([O-])=O AQRYNYUOKMNDDV-UHFFFAOYSA-M 0.000 description 14
- 239000000203 mixture Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 12
- 230000003287 optical effect Effects 0.000 description 12
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 11
- 238000003756 stirring Methods 0.000 description 11
- 229920006217 cellulose acetate butyrate Polymers 0.000 description 10
- 238000011161 development Methods 0.000 description 10
- 239000006185 dispersion Substances 0.000 description 10
- 229920000139 polyethylene terephthalate Polymers 0.000 description 10
- 239000005020 polyethylene terephthalate Substances 0.000 description 10
- 238000012545 processing Methods 0.000 description 10
- 239000002904 solvent Substances 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 9
- 238000001035 drying Methods 0.000 description 8
- 239000011888 foil Substances 0.000 description 8
- 239000004615 ingredient Substances 0.000 description 8
- 150000003378 silver Chemical class 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000001931 thermography Methods 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 5
- 239000004926 polymethyl methacrylate Substances 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000008199 coating composition Substances 0.000 description 4
- 238000004040 coloring Methods 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000007651 thermal printing Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- QGKMIGUHVLGJBR-UHFFFAOYSA-M (4z)-1-(3-methylbutyl)-4-[[1-(3-methylbutyl)quinolin-1-ium-4-yl]methylidene]quinoline;iodide Chemical compound [I-].C12=CC=CC=C2N(CCC(C)C)C=CC1=CC1=CC=[N+](CCC(C)C)C2=CC=CC=C12 QGKMIGUHVLGJBR-UHFFFAOYSA-M 0.000 description 3
- WZHHYIOUKQNLQM-UHFFFAOYSA-N 3,4,5,6-tetrachlorophthalic acid Chemical compound OC(=O)C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1C(O)=O WZHHYIOUKQNLQM-UHFFFAOYSA-N 0.000 description 3
- 235000021357 Behenic acid Nutrition 0.000 description 3
- 108010010803 Gelatin Proteins 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 150000008064 anhydrides Chemical class 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 229940116226 behenic acid Drugs 0.000 description 3
- XSCHRSMBECNVNS-UHFFFAOYSA-N benzopyrazine Natural products N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical class OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000008119 colloidal silica Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 3
- 239000008273 gelatin Substances 0.000 description 3
- 229920000159 gelatin Polymers 0.000 description 3
- 235000019322 gelatine Nutrition 0.000 description 3
- 235000011852 gelatine desserts Nutrition 0.000 description 3
- 238000010348 incorporation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 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 3
- LFSXCDWNBUNEEM-UHFFFAOYSA-N phthalazine Chemical compound C1=NN=CC2=CC=CC=C21 LFSXCDWNBUNEEM-UHFFFAOYSA-N 0.000 description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 3
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 150000005206 1,2-dihydroxybenzenes Chemical class 0.000 description 2
- SZAQZZKNQILGPU-UHFFFAOYSA-N 2-[1-(2-hydroxy-3,5-dimethylphenyl)-2-methylpropyl]-4,6-dimethylphenol Chemical compound C=1C(C)=CC(C)=C(O)C=1C(C(C)C)C1=CC(C)=CC(C)=C1O SZAQZZKNQILGPU-UHFFFAOYSA-N 0.000 description 2
- JKFYKCYQEWQPTM-UHFFFAOYSA-N 2-azaniumyl-2-(4-fluorophenyl)acetate Chemical compound OC(=O)C(N)C1=CC=C(F)C=C1 JKFYKCYQEWQPTM-UHFFFAOYSA-N 0.000 description 2
- KPGXRSRHYNQIFN-UHFFFAOYSA-N 2-oxoglutaric acid Chemical compound OC(=O)CCC(=O)C(O)=O KPGXRSRHYNQIFN-UHFFFAOYSA-N 0.000 description 2
- CWJJAFQCTXFSTA-UHFFFAOYSA-N 4-methylphthalic acid Chemical compound CC1=CC=C(C(O)=O)C(C(O)=O)=C1 CWJJAFQCTXFSTA-UHFFFAOYSA-N 0.000 description 2
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical group OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 229920002845 Poly(methacrylic acid) Chemical class 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- ZTHYODDOHIVTJV-UHFFFAOYSA-N Propyl gallate Chemical compound CCCOC(=O)C1=CC(O)=C(O)C(O)=C1 ZTHYODDOHIVTJV-UHFFFAOYSA-N 0.000 description 2
- 229910021612 Silver iodide Inorganic materials 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 150000001555 benzenes Chemical class 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 238000007606 doctor blade method Methods 0.000 description 2
- VFPFQHQNJCMNBZ-UHFFFAOYSA-N ethyl gallate Chemical compound CCOC(=O)C1=CC(O)=C(O)C(O)=C1 VFPFQHQNJCMNBZ-UHFFFAOYSA-N 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 229940042795 hydrazides for tuberculosis treatment Drugs 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- YDSWCNNOKPMOTP-UHFFFAOYSA-N mellitic acid Chemical compound OC(=O)C1=C(C(O)=O)C(C(O)=O)=C(C(O)=O)C(C(O)=O)=C1C(O)=O YDSWCNNOKPMOTP-UHFFFAOYSA-N 0.000 description 2
- FBSFWRHWHYMIOG-UHFFFAOYSA-N methyl 3,4,5-trihydroxybenzoate Chemical compound COC(=O)C1=CC(O)=C(O)C(O)=C1 FBSFWRHWHYMIOG-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000025 natural resin Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 239000011236 particulate material Substances 0.000 description 2
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- JEXVQSWXXUJEMA-UHFFFAOYSA-N pyrazol-3-one Chemical class O=C1C=CN=N1 JEXVQSWXXUJEMA-UHFFFAOYSA-N 0.000 description 2
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 2
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 2
- 229940045105 silver iodide Drugs 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- AUHHYELHRWCWEZ-UHFFFAOYSA-N tetrachlorophthalic anhydride Chemical compound ClC1=C(Cl)C(Cl)=C2C(=O)OC(=O)C2=C1Cl AUHHYELHRWCWEZ-UHFFFAOYSA-N 0.000 description 2
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- OMDQUFIYNPYJFM-XKDAHURESA-N (2r,3r,4s,5r,6s)-2-(hydroxymethyl)-6-[[(2r,3s,4r,5s,6r)-4,5,6-trihydroxy-3-[(2s,3s,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]methoxy]oxane-3,4,5-triol Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1OC[C@@H]1[C@@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)O)[C@H](O)[C@H](O)[C@H](O)O1 OMDQUFIYNPYJFM-XKDAHURESA-N 0.000 description 1
- AFINAILKDBCXMX-PBHICJAKSA-N (2s,3r)-2-amino-3-hydroxy-n-(4-octylphenyl)butanamide Chemical compound CCCCCCCCC1=CC=C(NC(=O)[C@@H](N)[C@@H](C)O)C=C1 AFINAILKDBCXMX-PBHICJAKSA-N 0.000 description 1
- 239000001124 (E)-prop-1-ene-1,2,3-tricarboxylic acid Substances 0.000 description 1
- HATRZINXSXGGHD-UHFFFAOYSA-N 1,1-dichloroethene;2-methylidenebutanedioic acid;methyl prop-2-enoate Chemical compound ClC(Cl)=C.COC(=O)C=C.OC(=O)CC(=C)C(O)=O HATRZINXSXGGHD-UHFFFAOYSA-N 0.000 description 1
- UXTZUUVTGMDXNG-UHFFFAOYSA-N 1,2-benzoxazine-3,4-dione Chemical compound C1=CC=C2C(=O)C(=O)NOC2=C1 UXTZUUVTGMDXNG-UHFFFAOYSA-N 0.000 description 1
- XBYRMPXUBGMOJC-UHFFFAOYSA-N 1,2-dihydropyrazol-3-one Chemical class OC=1C=CNN=1 XBYRMPXUBGMOJC-UHFFFAOYSA-N 0.000 description 1
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 1
- UHKAJLSKXBADFT-UHFFFAOYSA-N 1,3-indandione Chemical class C1=CC=C2C(=O)CC(=O)C2=C1 UHKAJLSKXBADFT-UHFFFAOYSA-N 0.000 description 1
- ODIRBFFBCSTPTO-UHFFFAOYSA-N 1,3-selenazole Chemical class C1=C[se]C=N1 ODIRBFFBCSTPTO-UHFFFAOYSA-N 0.000 description 1
- 150000005208 1,4-dihydroxybenzenes Chemical class 0.000 description 1
- PUCYIVFXTPWJDD-UHFFFAOYSA-N 1,6-dihydroxycyclohexa-2,4-dienecarboxylic acid Chemical compound OC1C=CC=CC1(O)C(O)=O PUCYIVFXTPWJDD-UHFFFAOYSA-N 0.000 description 1
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 description 1
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- KEQTWHPMSVAFDA-UHFFFAOYSA-N 2,3-dihydro-1h-pyrazole Chemical class C1NNC=C1 KEQTWHPMSVAFDA-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical class NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 description 1
- HCUZVMHXDRSBKX-UHFFFAOYSA-N 2-decylpropanedioic acid Chemical compound CCCCCCCCCCC(C(O)=O)C(O)=O HCUZVMHXDRSBKX-UHFFFAOYSA-N 0.000 description 1
- NEAQRZUHTPSBBM-UHFFFAOYSA-N 2-hydroxy-3,3-dimethyl-7-nitro-4h-isoquinolin-1-one Chemical class C1=C([N+]([O-])=O)C=C2C(=O)N(O)C(C)(C)CC2=C1 NEAQRZUHTPSBBM-UHFFFAOYSA-N 0.000 description 1
- DFZVZKUDBIJAHK-UHFFFAOYSA-N 2-hydroxyoctadecanoic acid silver Chemical compound [Ag].OC(C(=O)O)CCCCCCCCCCCCCCCC DFZVZKUDBIJAHK-UHFFFAOYSA-N 0.000 description 1
- QJGNSTCICFBACB-UHFFFAOYSA-N 2-octylpropanedioic acid Chemical compound CCCCCCCCC(C(O)=O)C(O)=O QJGNSTCICFBACB-UHFFFAOYSA-N 0.000 description 1
- UGWULZWUXSCWPX-UHFFFAOYSA-N 2-sulfanylideneimidazolidin-4-one Chemical class O=C1CNC(=S)N1 UGWULZWUXSCWPX-UHFFFAOYSA-N 0.000 description 1
- XOHUESSDMRKYEV-UHFFFAOYSA-N 2h-phthalazin-1-one;silver Chemical compound [Ag].C1=CC=C2C(=O)NN=CC2=C1 XOHUESSDMRKYEV-UHFFFAOYSA-N 0.000 description 1
- YQUVCSBJEUQKSH-UHFFFAOYSA-N 3,4-dihydroxybenzoic acid Chemical class OC(=O)C1=CC=C(O)C(O)=C1 YQUVCSBJEUQKSH-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
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- 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
- G03C1/49872—Aspects relating to non-photosensitive layers, e.g. intermediate protective layers
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- 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
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- 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
- G03C1/49863—Inert additives, e.g. surfactants, binders
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- 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
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
-
- 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
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/7614—Cover layers; Backing layers; Base or auxiliary layers characterised by means for lubricating, for rendering anti-abrasive or for preventing adhesion
- G03C2001/7628—Back layer
-
- 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
- G03C2200/23—Filter dye
Definitions
- the present invention relates to substantially light-insensitive thermographic and photothermographic materials having a background for viewing in transmission images produced therewith and recording processes therefor.
- Thermal imaging or thermography is a recording process wherein images are generated by the use of imagewise modulated thermal energy.
- thermography three approaches are known:
- Thermographic materials of type 3 become photothermographic if a photosensitive agent is present which after exposure to UV, visible or IR light is capable of catalyzing or participating in a thermographic process bringing about changes in colour or optical density.
- photothermographic materials are the so called “Dry Silver” photographic materials of the 3M Company, which are reviewed by D.A. Morgan in “Handbook of Imaging Science", edited by A.R. Diamond, page 43, published by Marcel Dekker in 1991.
- thermographic film have a blue background, which can vary in tone and optical density, for example, for applications such as the printing of medical images for viewing in transmission.
- This blue background is not aesthetic having a number of functional purposes, for example: rendering the brownish tone of developed silver images blue/black, preventing over-exposure of the eyes of the viewer upon viewing in transmission with a view-box and improving image sharpness by reducing light scattering.
- Current practice is to achieve this blue background by incorporating one or more blue pigments or dyes into the support, thereby avoiding possible interference between the pigment or dye necessary to obtain the blue background and the other functional ingredients in the layer structure which makes up a thermographic material.
- this practice requires pigments and dyes which can withstand the high temperatures involved in kneading these dyes and pigments into the polymer (conventionally polyethylene terephthalate), in extruding the polymer to produce the polymer sheet, in stretching the polymer sheet and in conditioning the resulting support to reduce crimp upon later exposure to high temperatures during coating, drying, conditioning and use.
- this practice also requires the holding of an inventory of different sorts of blue background support as well as substantially colourless supports for producing a complete range of thermographic materials e.g. from graphics applications requiring a substantially colourless support to medical applications requiring a blue background support.
- thermographic materials having different blue backgrounds which can utilize a substantially colourless support.
- thermographic recording material having a blue background which can utilize a substantially colourless support.
- a substantially light-insensitive thermographic recording material comprising a substantially colourless support and a thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent for the substantially light-insensitive organic silver salt in thermal working relationship therewith and a binder, characterized in that a blue pigment or dye having an absorption maximum in the wavelength range from 550 to 700 nm is present in the thermosensitive element and/or any other layer on either side of the support which provides a background for viewing in transmission images produced with said thermographic recording material.
- thermographic recording process comprising the steps of: bringing a substanially light-insensitive thermographic recording material, as referred to above, into the proximity of a heat source; imagewise heating of the thermographic recording material with the heat source; and removing the thermographic recording material from the heat source.
- a photothermographic recording material excluding a palladium compound
- a photo-addressable thermally developable element containing a substantially light-insensitive organic silver salt, an organic reducing agent for the substantially light-insensitive organic silver salt in thermal working relationship therewith, photosensitive silver halide in catalytic association with the substantially light-insensitive organic silver salt and a binder, characterized in that a blue pigment or dye having an absorption maximum in the wavelength range from 550 to 700 nm is present in the photo-addressable thermally developable element and/or any other layer on either side of the support.
- a photothermographic recording process comprising the steps of: bringing a photothermographic recording material, as referred to above, into the proximity of a source of actinic radiation; image-wise exposing the photothermographic recording material with the source of actinic radiation; bringing the image-wise exposed photothermographic recording material into the proximity of a heat source; uniformly heating the image-wise exposed photothermographic recording material; and removing the photothermographic recording material from the heat source.
- substantially light-insensitive is meant not intentionally light sensitive.
- a substantially colourless support is meant that no colouring agent has been intentially added.
- the blue pigment or dye has an absorption maximum in the wavelength range from 570 to 630 nm.
- Suitable blue pigments and dyes for use in the present invention are selected from the group consisting of phthalocyanine dyes, phthalocyanine pigments, indanthrone dyes and indantrone pigments. It is clear that a mixture of blue pigments or dyes can also be used in the present invention.
- the blue pigments for use in the present invention are preferably dispersed in the coating medium by the methods described e.g. in EP-A 569 074. Further dispersion techniques which may be used are described in e.g. EP-A 552 646, EP-A 595 821 and US-P 4,900,652. Preferred mean particle sizes of the dispersed pigments are not more than 2 ⁇ m, more preferably not more than 1 ⁇ m and most preferably not more than 0.5 ⁇ m.
- thermographic and photothermographic materials By making use of such blue pigments and dyes substantially light-insensitive thermographic and photothermographic materials with a blue background can be obtained which render the brownish tone of developed silver images blue/black, prevent over-exposure of the eyes of the viewer upon viewing in transmission with a view-box and improve image sharpness by reducing light scattering, while having the additional financial benefits of a reduced inventory of supports, less storage capacity for supports and a reduced probability of coating taking place on the wrong support.
- Suitable blue dyes/pigments for use in the present invention are:
- thermosensitive element used in the present invention comprises a substantially light-insensitive organic silver salt and an organic reducing agent therefor in thermal working relationship therewith and a binder.
- the element may comprise a layer system in which the ingredients may be dispersed in different layers, with the proviso that the substantially light-insensitive organic silver salt and the organic reducing agent are in thermal working relationship with one another 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 substantially light-insensitive organic silver salt particles so that reduction of the organic silver salt can take place.
- Preferred substantially light-insensitive organic silver salts used in the present invention are silver salts of aliphatic carboxylic acids known as fatty acids, 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"; silver dodecyl sulphonate described in US-P 4,504,575; and silver di-(2-ethylhexyl)-sulfosuccinate described in EP-A 227 141.
- Modified aliphatic carboxylic acids with thioether group as described e.g.
- thermosensitive silver image may be produced likewise to produce a thermosensitive silver image.
- Silver imidazolates and the substantially light-insensitive inorganic or organic silver salt complexes described in US-P 4,260,677 are also suitable.
- substantially light-insensitive organic silver salt for the purposes of the present invention also includes mixtures of organic silver salts.
- Emulsion of organic silver salt Emulsion of organic silver salt
- a suspension of particles containing a substantially light-insensitive silver salt of an organic carboxylic acid may be obtained by using a process, comprising simultaneous metered addition of an aqueous solution or suspension of an organic carboxylic acid or its salt; and an aqueous solution of a silver salt to an aqueous liquid, as described in EP-A 754 969.
- Suitable organic reducing agents for the reduction of the substantially light-insensitive organic silver salts are organic compounds containing at least one active hydrogen atom linked to O, N or C, such as is the case with, mono-, bis-, tris- or tetrakisphenols; mono- or bis-naphthols; di- or polyhydroxy-naphthalenes; di- or polyhydroxybenzenes; hydroxymonoethers such as alkoxynaphthols, e.g. 4-methoxy-1-naphthol described in US-P 3,094,41; pyrazolidin-3-one type reducing agents, e.g.
- PHENIDONETM pyrazolin-5-ones; indan-1,3-dione derivatives; hydroxytetrone acids; hydroxytetronimides; 3-pyrazolines; pyrazolones; reducing saccharides; aminophenols e.g. METOLTM; p-phenylenediamines, hydroxylamine derivatives such as for example described in US-P 4,082,901; reductones e.g. ascorbic acids; hydroxamic acids; hydrazine derivatives; amidoximes; n-hydroxyureas; and the like, see also US-P 3,074,809, 3,080,254, 3,094,417 and 3,887,378.
- aromatic di- and tri-hydroxy compounds having at least two hydroxy groups in ortho- or para-position on the same aromatic nucleus, e.g. benzene nucleus, hydroquinone and substituted hydroquinones, catechol and substituted catechols are preferred.
- substituted catechol i.e. reducing agents containing at least one benzene nucleus with two hydroxy groups (-OH) in orthoposition
- 1,2-dihydroxybenzoic acid 3-(3',4'-dihydroxyphenyl)propionic acid, pyrogallol, polyhydroxy spiro-bis-indane compounds
- gallic acid gallic acid esters e.g. methyl gallate, ethyl gallate and propyl gallate, tannic acid and 3,4-dihydroxy-benzoic acid esters are preferred.
- Particularly preferred catechol-type reducing agents are described in EP-A 692 733 and EP-A 599 369.
- Polyphenols such as the bisphenols used in the 3M Dry SilverTM materials, sulfonamide phenols such as used in the Kodak DacomaticTM materials, and naphthols are particularly preferred for photothermographic recording materials with photo-addressable thermally developable elements on the basis of photosensitive silver halide/organic silver salt/reducing agent.
- the reducing agent must be present in such a way that it is able to diffuse to the substantially light-insensitive organic silver salt particles so that reduction of the organic silver salt can take place.
- the silver image density depends on the coverage of the above defined reducing agent(s) and organic silver salt(s) and has preferably to be such that, on heating above 80 °C, an optical density of at least 1.5 can be obtained. Preferably at least 0.10 moles of reducing agent per mole of organic silver salt is used.
- reducing agents being considered as primary or main reducing agents may be used in conjunction with so-called auxiliary reducing agents.
- auxiliary reducing agents that may be used in conjunction with the above-mentioned primary reducing agents are sulfonamidophenols as described in the periodical Research Disclosure, February 1979, item 17842, in US-P 4,360,581 and 4,782,004, and in EP-A 423 891.
- auxiliary reducing agents that may be used in conjunction with the above mentioned primary reducing agents are sulfonyl hydrazide reducing agents such as disclosed in US-P 5,464,738, trityl hydrazides and formyl-phenyl-hydrazides such as disclosed in US-P 5,496,695 and organic reducing metal salts, e.g. stannous stearate described in US-P 3,460,946 and 3,547,648.
- sulfonyl hydrazide reducing agents such as disclosed in US-P 5,464,738, trityl hydrazides and formyl-phenyl-hydrazides such as disclosed in US-P 5,496,695
- organic reducing metal salts e.g. stannous stearate described in US-P 3,460,946 and 3,547,648.
- the binder for the thermosensitive element or photo-addressable thermally developable element used in the present invention may be coatable from a solvent or aqueous dispersion and is itself film-forming or must be used together with a film-forming binder.
- Film-forming binders coatable from a solvent dispersion and usable in the present invention may be all kinds of natural, modified natural or synthetic resins or mixtures of such resins, wherein the organic silver salt can be dispersed homogeneously: e.g.
- 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 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, polyacrylic acid esters, polymethacrylic acid esters, polystyrene and polyethylene or mixtures thereof.
- a particularly suitable polyvinyl butyrals containing a minor amount of vinyl alcohol units are marketed under the trade names BUTVARTM B76 and BUTVARTM B79 of Monsanto USA and provide a good adhesion to properly
- the film-forming binder coatable from an aqueous dispersion used in the present invention may be all kinds of transparent or translucent water-dispersible or water soluble natural, modified natural or synthetic resins or mixtures of such resins, wherein the organic silver salt can be dispersed homogeneously for example proteins, such as gelatin and gelatin derivatives (e.g.
- phthaloyl gelatin cellulose derivatives, such as carboxymethylcellulose, polysaccharides, such as dextran, starch ethers etc., galactomannan, polyvinyl alcohol, polyvinylpyrrolidone, acrylamide polymers, homoor co-polymerized acrylic or methacrylic acid, latexes of water dispersible polymers, with or without hydrophilic groups, or mixtures thereof.
- Polymers with hydrophilic functionality for forming an aqueous polymer dispersion (latex) are described e.g. in US-P 5,006,451, but serve therein for forming a barrier layer preventing unwanted diffusion of vanadium pentoxide present as an antistatic agent.
- the binder to organic silver salt weight ratio is preferably in the range of 0.2 to 6, and the thickness of the recording layer is preferably in the range of 5 to 50 ⁇ m.
- binders or mixtures thereof may be used in conjunction with waxes or "heat solvents” also called “thermal solvents” or “thermosolvents” improving the reaction speed of the redox-reaction at elevated temperature.
- a “heat solvent”, as used in the present invention is a non-hydrolyzable organic material which is solid in the recording layer at temperatures below 50°C but becomes a plasticizer for the recording layer in the heated region and/or is a liquid solvent for at least one of the redox-reactants, e.g. the reducing agent for the organic silver salt, at a temperature above 60°C.
- thermosensitive element may also contain at least one polycarboxylic acid and/or anhydride thereof in a molar percentage of at least 20 with respect to all the organic silver salt(s) present and in thermal working relationship therewith.
- Particularly suitable are saturated aliphatic dicarboxylic acids containing at least 4 carbon atoms, e.g. succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, nonane-dicarboxylic acid, decane-dicarboxylic acid and undecane-dicarboxylic acid.
- Suitable unsaturated dicarboxylic acids are : maleic acid, citraconic acid, itaconic acid and aconitic acid.
- Suitable polycarboxylic acids are citric acid and derivatives thereof, acetonedicarboxylic acid, iso-citric acid and ⁇ -ketoglutaric acid.
- Preferred aromatic polycarboxylic acids are ortho-phthalic acid and 3-nitro-phthalic acid, tetrachlorophthalic acid, mellitic acid, pyromellitic acid and trimellitic acid and the anhydrides thereof.
- thermosensitive or photo-addressable thermally developable element preferably contains in admixture with the organic silver salts and reducing agents a so-called toning agent known from thermography or photothermography.
- Suitable toning agents are succinimide, phthalazine and the phthalimides and phthalazinones within the scope of the general formulae described in US-P 4,082,901 and the toning agents described in US-P 3,074,809, 3,446,648 and 3,844,797.
- Particularly useful toning agents are the heterocyclic toner compounds of the benzoxazine dione or naphthoxazine dione type as described in GB-P 1,439,478, US-P 3,951,660 and US-P 5,599,647.
- thermosensitive element or photo-addressable thermally developable element may contain additives such as free fatty acids, surface-active agents, e.g. nonionic antistatic agents including a fluorocarbon group e.g. F 3 C(CF 2 ) 6 CONH(CH 2 CH 2 O)-H; silicone oil, e.g. BAYSILONETM ⁇ l A (from BAYER AG, GERMANY); ultraviolet light absorbing compounds; silica; colloidal silica; fine polymeric particles, e.g. of poly(methylmethacrylate); and/or optical brightening agents.
- surface-active agents e.g. nonionic antistatic agents including a fluorocarbon group e.g. F 3 C(CF 2 ) 6 CONH(CH 2 CH 2 O)-H
- silicone oil e.g. BAYSILONETM ⁇ l A (from BAYER AG, GERMANY)
- ultraviolet light absorbing compounds e.g. BAYSILONETM ⁇ l A (from BAY
- the support for the (photo)thermographic recording material according to the present invention may be transparent or translucent e.g. made of a cellulose ester, e.g. cellulose triacetate; corona and flame treated polypropylene; polystyrene; polymethacrylic acid ester; polycarbonate or polyester, e.g. polyethylene terephthalate or polyethylene naphthalate as disclosed in GB 1,293,676, GB 1,441,304 and GB 1,454,956.
- a cellulose ester e.g. cellulose triacetate
- corona and flame treated polypropylene e.g. cellulose triacetate
- polystyrene polymethacrylic acid ester
- polycarbonate or polyester e.g. polyethylene terephthalate or polyethylene naphthalate as disclosed in GB 1,293,676, GB 1,441,304 and GB 1,454,956.
- the support may be in sheet, ribbon or web form and subbed or pretreated, if need be to improve the adherence to the thereon coated thermosensitive element or photo-addressable thermally developable element.
- thermosensitive element or photo-addressable thermally developable element of the substantially light-insensitive thermographic and photothermographic recording materials of the present invention to polyethylene terephthalate supports are described e.g. in GB-P 1,234,755, US-P 3,397,988; 3,649,336; 4,123,278, US-P 4,478,907 and in Research Disclosure published in Product Licensing Index, July 1967, p. 6.
- Suitable pretreatments of hydrophobic resin supports are, for example, treatment with a corona discharge and/or attack by solvent(s), thereby providing a micro-roughening.
- the transparent or translucent support may be colourless or coloured, e.g. having a blue colour.
- the outermost layer of the (photo)thermographic recording material on the same side of the support as the thermosensitive element or photo-addressable thermally developable element, used in the present invention, may be a protective layer to avoid local deformation of the thermosensitive element or photo-addressable thermally developable element and to improve resistance against abrasion.
- the protective layer preferably comprises a binder, which may be hydrophobic (solvent soluble) of hydrophilic (water soluble).
- a binder which may be hydrophobic (solvent soluble) of hydrophilic (water soluble).
- hydrophobic binders are the polycarbonates described in EP-A 614 769.
- Hydrophilic binders are, however, preferred for the protective layer, as coating can be performed from an aqueous composition and mixing of the hydrophilic protective layer with the immediate underlayer can be avoided by using a hydrophobic binder in the immediate underlayer.
- a protective layer used in the present invention may also contain at least one solid lubricant having a melting point below 150°C and at least one liquid lubricant at least one of these lubricants being a phosphoric acid derivative; and additional dissolved lubricating material and/or particulate material, e.g. talc particles, optionally protruding from the outermost layer.
- Suitable lubricating materials are surface active agents, liquid lubricants, solid lubricants which do not melt during thermal development of the recording material, solid lubricants which melt (thermomeltable) during thermal development of the recording material or mixtures thereof.
- the lubricant may be applied with or without a polymeric binder.
- Such protective layers may also contain particulate material, e.g. talc particles, optionally protruding from the protective outermost layer as described in WO 94/11198.
- particulate material e.g. talc particles
- Other additives can also be incorporated therein e.g. colloidal particles such as colloidal silica.
- the substantially light-insensitive thermographic and photothermographic recording materials of the present invention may contain antihalation or acutance dyes which absorb light which has passed through the photosensitive layer, thereby preventing its reflection.
- Such dyes may be incorporated into the thermosensitive element, photo-addressable thermally developable element or in any other layer of the substantially light-insensitive thermographic or photothermographic recording material of the present invention.
- the antihalation dye may also be bleached either thermally during the thermal development process, as disclosed in the US-P's 4,033,948, 4,088,497, 4,153,463, 4,196,002, 4,201,590, 4,271,263, 4,283,487, 4,308,379, 4,316,984, 4,336,323, 4,373,020, 4,548,896, 4,594,312, 4,977,070, 5,258,274, 5,314,795 and 5,312,721, or photo-bleached after the thermal development process, as disclosed in the US-P,s 3,984,248, 3,988,154, 3,988,156, 4,111,699 and 4,359,524.
- antihalation dye may be contained in a layer which can be removed subsequent to the exposure process, as disclosed in US-P 4,477,562 and EP-A 491 457.
- Suitable antihalation dyes for use with infra-red light are described in the EP-A's 377 961 and 652 473, the EP-B's 101 646 and 102 781 and the US-P's 4,581,325 and 5,380,635.
- the photothermographic materials according to the present invention may further include an antistatic layer.
- Suitable antistatic layers are described in EP-A's 444 326, 534 006 and 644 456, US-P's 5,364,752 and 5,472,832 and DOS 4125758.
- Particularly preferred antistatic layers are those based on polythiophene as disclosed in EP-A 628 560, US-P 5,354,613, US-P 5,372,924, US-P 5,370,981 and US-P 5,391,472.
- the photo-addressable thermally developable element used in the present invention comprises a substantially light-insensitive organic silver salt and an organic reducing agent therefor in thermal working relationship therewith, photosensitive silver halide in catalytic association with the substantially light-insensitive organic silver salt and a binder.
- the photo-addressable thermally developable element may comprise a layer system in which the ingredients may be dispersed in different layers, with the proviso that the substantially light-insensitive organic silver salt and the organic reducing agent are in thermal working relationship with one another i.e.
- the reducing agent must be present in such a way that it is able to diffuse to the substantially light-insensitive organic silver salt particles so that reduction of the organic silver salt can take place; and the photosensitive silver halide is in catalytic association with the substantially light-insensitive organic silver salt.
- the photosensitive silver halide used in the present invention may be employed in a range of 0.1 to 90 mol percent; preferably, from 0.2 to 50 mol percent; particularly 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 employed without modification. However, it may be chemically sensitized 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., a reducing agent such as a tin halide etc., or a combination thereof.
- 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.
- a reducing agent such as a tin halide etc.
- the silver halide may be added to the photo-addressable thermally developable element in any fashion which places it in catalytic proximity to the substantially light-insensitive organic silver salt.
- Photosensitive silver halide and substantially light-insensitive organic silver salt which are separately formed, i.e. ex-situ or "preformed", in a binder can be mixed prior to use to prepare a coating solution, but they may be blended for a long period of time prior to use.
- a process may be used in which a.halogen-containing compound is added to the organic silver salt to partially convert the substantially light-insensitive organic silver salt to silver halide, as disclosed in US-P 3,457,075.
- a particularly preferred mode of preparing the emulsion of organic silver salt and photosensitive silver halide for coating of the photo-addressable thermally developable element from solvent media, according to the present invention is that disclosed in US-P 3,839,049, but other methods such as those described in Research Disclosure, June 1978, item 17029 and US-P 3,700,458 may also be used.
- a suspension of particles containing a substantially light-insensitive silver salt of an organic carboxylic acid is disclosed in EP-A 754 969.
- a particularly preferred mode of preparing the emulsion of organic silver salt and photosensitive silver halide for coating of the photo-addressable thermally developable element from aqueous media, according to the present invention is that disclosed in unpublished PCT patent application PCT/EP/96/02580, which discloses a photothermographic recording material comprising a photo-addressable thermally developable element comprising a substantially light-insensitive organic silver salt, photosensitive silver halide in catalytic association with the substantially light-insensitive organic silver salt, a reducing agent in thermal working relationship with the substantially light-insensitive organic silver salt and a binder, characterized in that the binder comprises a water-soluble polymer, a water-dispersible polymer or a mixture of a water-soluble polymer and a water-dispersible polymer and particles of the photosensitive silver halide are non-aggregating in
- the photo-addressable thermally developable element of the photothermographic recording material may contain a spectral sensitizer, optionally together with a supersensitizer, for the silver halide.
- the silver halide may be spectrally sensitized with various known dyes including cyanine, merocyanine, styryl, hemicyanine, oxonol, hemioxonol and xanthene dyes optionally, particularly in the case of sensitization to infra-red radiation, in the presence of a so-called supersensitizer.
- Useful cyanine dyes include those having a basic nucleus, such as a thiazoline nucleus, an oxazoline nucleus, a pyrroline nucleus, a pyridine nucleus, an oxazole nucleus, a thiazole nucleus, a selenazole nucleus and an imidazole nucleus.
- a basic nucleus such as a thiazoline nucleus, an oxazoline nucleus, a pyrroline nucleus, a pyridine nucleus, an oxazole nucleus, a thiazole nucleus, a selenazole nucleus and an imidazole nucleus.
- Useful merocyanine dyes which are preferred include those having not only the above described basic nuclei but also acid nuclei, such as a thiohydantoin nucleus, a rhodanine nucleus, an oxazolidinedione nucleus, a thiazolidinedione nucleus, a barbituric acid nucleus, a thiazolinone nucleus, a malononitrile nucleus and a pyrazolone nucleus.
- acid nuclei such as a thiohydantoin nucleus, a rhodanine nucleus, an oxazolidinedione nucleus, a thiazolidinedione nucleus, a barbituric acid nucleus, a thiazolinone nucleus, a malononitrile nucleus and a pyrazolone nucleus.
- a thiohydantoin nucleus
- Suitable sensitizers of silver halide to infra-red radiation include those disclosed in EP-A's 465 078, 559 101, 616 014 and 635 756, JN's 03-080251, 03-163440, 05-019432, 05-072662 and 06-003763 and US-P's 4,515,888, 4,639,414, 4,713,316, 5,258,282 and 5,441,866.
- Suitable supersensitizers for use with infra-red spectral sensitizers are disclosed in EP-A's 559 228 and 587 338 and in US-P's 3,877,943 and 4,873,184.
- any layer of the (photo)thermographic recording materials of the present invention may proceed by any thin-film coating technique known in the art.
- coating technique known in the art.
- slide hopper coating is preferred, but other coating techniques such as dip coating and air knife coating may also be used. Details about such coating techniques can be found in "Modern Coating and Drying Technology" by Edward D. Cohen and Edgar B. Gutoff, published by VCH Publishers, Inc. 220 East 23rd Street, Suite 909 New York, NY 10010.
- thermographic recording materials Processing configurations for thermographic recording materials
- 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, or by direct thermal imaging with a thermal head.
- thermal printing image signals into electric pulses and their transmission through a driver circuit to a thermal printhead.
- the thermal printhead consists of microscopic heat resistor elements, which convert the electrical energy into heat via Joule effect.
- the electric pulses thus converted into thermal signals manifest themselves as heat transferred to the surface of the thermal paper wherein the chemical reaction resulting in colour development takes place.
- 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 50ms or less, the pressure contact of the thermal printhead with the recording material being e.g. 100-500g/cm 2 to ensure a good transfer of heat.
- the imagewise heating of the recording material with the thermal printing heads may proceed through a contacting but removable resin sheet or web wherefrom during the heating no transfer of recording material can take place.
- the direct thermal image-wise heating of the recording material proceeds is carried out with a thermal head.
- Suitable thermal printing heads are e.g. a Fujitsu Thermal Head (FTP-040 MCS001), a TDK Thermal Head F415 HH7-1089 and a Rohm Thermal Head KE 2008-F3.
- Activation of the heating elements can be power-modulated or pulse-length modulated at constant power.
- EP-A 622 217 discloses a method for producing a continuous tone image by heating the thermal recording element by means of a thermal head having a plurality of heating elements.
- 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 focussed light source, such as a CRT light source; a UV, visible or IR wavelength laser, such as a He/Ne-laser or an IR-laser diode, e.g. emitting at 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.
- a finely focussed light source such as a CRT light source
- a UV, visible or IR wavelength laser such as a He/Ne-laser or an IR-laser diode, e.g. emitting at 780nm, 830nm or 850nm
- a light emitting diode for
- 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 with for example a heated roller or a thermal head, radiative heating, microwave heating etc.
- thermographic and photothermographic recording materials of the present invention can be used for the production of transparencies, which are widely used in graphics applications, e.g. in masks or for display purposes, and in the medical diagnostic field in which black-imaged transparencies are widely used in inspection techniques operating with a light box.
- Application of the present invention is envisaged in the fields of both graphics images requiring high contrast images with a very steep print density applied dot energy dependence and continuous tone images requiring a weaker print density applied dot energy dependence, such as required in the medical diagnostic field.
- CAB cellulose acetate butyrate, CAB-171-15S from EASTMAN; AH01 (antihalation dye):
- a polyethylene terephthalate (PET) foil pigmented with a blue pigment was first coated on both sides with a subbing layer consisting of a terpolymer latex of vinylidene chloride-methyl acrylate-itaconic acid (88/10/2) in admixture with colloidal silica (surface area 100m 2 /g). After stretching the foil in the transverse direction the foil had a thickness of 175 ⁇ m with coverages of the terpolymer and of the silica in the subbing layers of 170mg/m 2 and 40mg/m 2 respectively on each side of the PET-foil.
- PET polyethylene terephthalate
- the backside layers of the photothermographic recording materials of COMPARATIVE EXAMPLES 1 to 4 were prepared by doctor blade coating one side of the thus subbed PET-foil with 70ml of a 2-butanone dispersion or solution containing CAB and the antihalation dye AH01 at a blade setting of 100 ⁇ m slit to a wet-layer thickness of 70 ⁇ m.
- a silver halide emulsion consisting of 3.11% by weight of silver halide particles consisting of 97mol% silver bromide and 3mol% silver iodide with an weight average particle size of 50nm, 0.47% by weight of GEL as dispersing agent in deionized water was prepared using conventional silver halide preparation techniques such as described, for example, in T.H. James, "The Theory of the Photographic Process", Fourth Edition, Macmillan Publishing Co. Inc., New York (1977), Chapter 3, pages 88-104.
- the silver behenate/silver halide emulsion was prepared by adding a solution of 6.8kg of behenic acid in 67L of 2-propanol at 65°C to a 400L vessel heated to maintain the temperature of the contents at 65°C, converting 96% of the behenic acid to sodium behenate by adding with stirring 76.8L of 0.25M sodium hydroxide in deionized water, then adding with stirring 10.5kg of the above-described silver halide emulsion at 40°C and finally adding with stirring 48L of a 0.4M solution of silver nitrate in deionized water. Upon completion of the addition of silver nitrate the contents of the vessel were allowed to cool and the precipitate filtered off, washed, slurried with water, filtered again and finally dried at 40°C for 72 hours.
- the emulsion layer coating compositions for the photothermographic recording materials of COMPARATIVE EXAMPLES 1 to 4 were prepared by adding the following solutions or liquids to 40.86g of the above-mentioned silver behenate/silver halide emulsion in the following sequence with stirring: 10.87g of 2-butanone, 0.75g of a 9% solution of TMABP in methanol followed by 2 hours stirring, 1.3g of 2-butanone, 0.2g of a 11% solution of calcium bromide in methanol and 1.3g of 2-butanone followed by 30 minutes stirring, a solution consisting of 0.21g of LOWINOXTM 22IB46, 0.5g of TMPS and 9.24g of 2-butanone followed by 10 minutes stirring, 1.84g of a 0.11% methanol solution of SENSI followed by 30 minutes stirring and finally 4.35g of ButvarTM B76 were added followed by 45 minutes of stirring and then 4.79g of 2-butanone.
- the PET-support subbed and coated with a backside layer as described above was then doctor blade-coated at a blade setting of 150 ⁇ m on the side of the support not coated with a backside layer with the coating composition to a wet layer thickness of 80 ⁇ m followed by drying for 5 minutes at 80°C on an aluminium plate in a drying cupboard.
- a protective layer coating composition for the photothermographic recording materials of COMPARATIVE EXAMPLES 1 to 4 was prepared by dissolving 4.08g of CAB and 0.16g of PMMA in 36.3g of 2-butanone and 4.16g of methanol adding the following solids or solution with stirring in the following sequence: 0.5g of phthalazine, 0.2g of 4-methylphthalic acid, 0.lg of tetrachlorophthalic acid, 0.2g of tetrachlorophthalic acid anhydride and a solution consisting of 2.55g of LOWINOXTM 22IB46 and 5.95g 2-butanone.
- the emulsion layer was then doctor blade-coated at a blade setting of 100 ⁇ m with the protective layer coating composition to a wet layer thickness of 57 ⁇ m, which after drying for 8 minutes at 80°C on an aluminium plate in a drying cupboard produced a layer with the following composition: CAB 4.08g/m 2 PMMA 0.16g/m 2 Phthalazine 0.50g/m 2 4-methylphthalic acid 0.20g/m 2 tetrachlorophthalic acid 0.10g/m 2 tetrachlorophthalic acid anhydride 0.20g/m 2 LOWINOXTM 22IB46 2.55g/m 2
- the photothermographic recording materials of COMPARATIVE EXAMPLES 1 to 4 were exposed for 1 s to a 750W lamp through a L775-filter and a wedge filter varying between 0 and 3.0 in steps of 0.15.
- Thermal processing was carried out for 10s with the side of the support provided with a silver behenate/silver halide emulsion layer in contact with a drum heated to a temperature of 121°C.
- the optical densities of the resulting images were measured in transmission with a MacBethTM TR924 densitometer through a visible filter to produce a sensitometric curve for the photothermographic recording materials from which the maximum and minimum optical densities, D max and D min , and the relative sensitities for D min + 1.0 determined.
- the image sharpness was assessed qualitatively using the following numerical codes:
- PET polyethylene terephthalate
- the backside layers of the photothermographic recording materials of INVENTION EXAMPLES 1 to 6 were prepared by doctor blade coating one side of the thus subbed PET-foil as described for COMPARATIVE EXAMPLES 1 to 4 except that the 2-butanone coating solution or dispersion contained blue dye in addition to CAB and antihalation dye AH01.
- the backside layer compositions thus produced are given in table 4 below: Invention example number PET type CAB [g/m 2 ] Blue dye AH01 [mg/m 2 ] No. [mg/m 2 ] 1 colourless 2.70 01 120 0 2 colourless 2.70 01 120 10 3 colourless 2.70 01 120 30 4 colourless 2.70 01 120 50 5 colourless 2.70 02 120 50 6 colourless 2.70 03 120 50
- Silver behenate/silver halide emulsion layer and protective layer Silver behenate/silver halide emulsion layer and protective layer
- the silver behenate/silver halide emulsion layer and protective layers were produced as described for COMPARATIVE EXAMPLES 1 to 4.
- the photothermographic recording materials of INVENTION EXAMPLES 1 to 6 were exposed and thermally processed as described for COMPARATIVE EXAMPLES 1 to 4.
- the maximum and minimum optical densities, D max and D min , of the images, the relative sensitivites for D min + 1.0 and the image sharpnesses were determined as described for COMPARATIVE EXAMPLES 1 to 4.
- a photothermographic recording material with a blue background can therefore be obtained by incorporating a blue dye or pigment in the backside layer and using a substantially transparent support with the advantage that the holding of an inventory of different sorts of blue background support as well as substantially colourless supports is no longer necessary, the danger of using the "wrong" sort of support for the production of a particular substantially light-insensitive thermographic recording material or photothermographic recording material is avoided and the use of more expensive pigments and dyes in the colouring of the support, due to the harsher conditions involved in the incorporation process, is no longer necessary.
- the sort of unpigmented support used for the photothermographic recording materials of INVENTION EXAMPLES 1 to 6 was used for the photothermographic recording material of INVENTION EXAMPLE 9. This was coated with a backside layer as described for COMPARATIVE EXAMPLE 4; a silver behenate/silver halide emulsion layer as described for COMPARATIVE EXAMPLES 1 to 4 except that 120 mg of DYE 01 was added to the coating emulsion; and the silver behenate/silver halide emulsion layer was coated with a protective layer as described for COMPARATIVE EXAMPLES 1 to 4.
- the photothermographic recording material of INVENTION EXAMPLE 9 was exposed and thermally processed as described for COMPARATIVE EXAMPLES 1 to 4.
- the sensitometric properties of the photothermographic material of INVENTION EXAMPLE 9 in which DYE 01 had been added to the silver behenate/silver halide emulsion layer and a substantially transparent support had been used was found not to differ from that of COMPARATIVE EXAMPLE 4 with a blue support and the same quantity of antihalation dye AH01 in the backside layer.
- a photothermographic recording material with a blue background can therefore be obtained by incorporating a blue dye or pigment in the silver behenate/silver halide emulsion layer together with a substantially transparent support with the advantage that the holding of an inventory of different sorts of blue background support as well as substantially colourless supports is no longer necessary, the danger of using the "wrong" sort of support for the production of a particular substantially light-insensitive thermographic recording material or photothermographic recording material is avoided and the use of more expensive pigments and dyes in the colouring of the support, due to the harsher conditions involved in the incorporation process, is no longer necessary.
Abstract
Description
- BLUE DYE 1 =
- Ceres Blue from Bayer AG [N,N'-2,6-diethyl-4-methylphenyl)-1,4,-diamino-anthraquinone]
- BLUE DYE 2 =
- Orasol Blue from Ciba Geigy AG
- BLUE DYE 3 =
- Reflex Blue R54 from Hoechst AG
- GEL:
- phthaloylgelatin, type 16875 from ROUSSELOT; SENSI:
- Butvar™ B76:
- polyvinylbutyral from MONSANTO;
- LOWINOX™ 22IB46:
- 2-propyl-bis(2-hydroxy-3,5-dimethylphenyl)methane from CHEM. WERKE LOWI;
- TMABP:
- tetramethylammonium bromide perbromide;
- TMPS:
- tribromomethyl benzenesulfinate;
- MBI:
- 2-mercaptobenzimidazole;
- CAB:
- cellulose acetate butyrate, CAB-171-15S from EASTMAN;
- PMMA:
- polymethylmethacrylate, Acryloid™ K120N from ROHM & HAAS.
- LOWINOX™ 22IB46 :
- 2-propyl-bis(2-hydroxy-3,5-dimethylphenyl)methane from CHEM. WERKE LOWI;
PET type | CAB [g/m2] | AH01 [mg/m2] | |
COMPARATIVE EXAMPLE 1 | blue | 2.70 | 0 |
COMPARATIVE EXAMPLE 2 | blue | 2.70 | 10 |
COMPARATIVE EXAMPLE 3 | blue | 2.70 | 20 |
COMPARATIVE EXAMPLE 4 | blue | 2.70 | 50 |
AH01 [mg/m2] | in wavelength range 550 to 700 nm | ||
λmax [nm] | Dmax | ||
COMPARATIVE EXAMPLE 1 | 0 | 589; 635 | 0.26; 0.27 |
COMPARATIVE EXAMPLE 4 | 50 | 589; 635 | 0.27; 0.30 |
CAB | 4.08g/m2 |
PMMA | 0.16g/m2 |
Phthalazine | 0.50g/m2 |
4-methylphthalic acid | 0.20g/m2 |
tetrachlorophthalic acid | 0.10g/m2 |
tetrachlorophthalic acid anhydride | 0.20g/m2 |
LOWINOX™ 22IB46 | 2.55g/m2 |
- 0 =
- unacceptable image sharpness
- 1 =
- poor image sharpness
- 2 =
- acceptable image sharpness
- 3 =
- good image sharpness
Comparative example number | thermal processing conditions | Dmax | Dmin | Relative sensitivity at Dmin + 1.0 | Image sharpness | |
temperature[°C] | time [s] | |||||
1 | 121 | 10 | 4.4 | 0.53 | 1.7 | 0 |
2 | 121 | 10 | 4.2 | 0.40 | 2.4 | 1 |
3 | 121 | 10 | 4.2 | 0.43 | 2.3 | 2 |
4 | 121 | 10 | 4.8 | 0.39 | 2.6 | 3 |
Invention example number | PET type | CAB [g/m2] | Blue dye | AH01 [mg/m2] | |
No. | [mg/m2] | ||||
1 | colourless | 2.70 | 01 | 120 | 0 |
2 | colourless | 2.70 | 01 | 120 | 10 |
3 | colourless | 2.70 | 01 | 120 | 30 |
4 | colourless | 2.70 | 01 | 120 | 50 |
5 | colourless | 2.70 | 02 | 120 | 50 |
6 | colourless | 2.70 | 03 | 120 | 50 |
Invention example number | Blue dye | AH01 [mg/m2] | in wavelength range 550 to 700 nm | ||
No. | [mg/m2] | λmax [nm] | Dmax | ||
1 | 01 | 120 | 0 | 588; 632 | 0.25; 0.28 |
4 | 01 | 120 | 50 | 589; 634 | 0.28; 0.32 |
5 | 02 | 120 | 50 | 675 | 0.40 |
6 | 03 | 120 | 50 | 630 | 0.33 |
Invention example number | thermal processing conditions | Dmax | Dmin | Relative sensitivity at Dmin + 1.0 | Image sharpness | |
temperature [°C] | time [s] | |||||
1 | 121 | 10 | 3.6 | 0.53 | 1.8 | 0 |
2 | 121 | 10 | 4.6 | 0.39 | 2.5 | 1 |
3 | 121 | 10 | 3.1 | 0.46 | 2.4 | 2 |
4 | 121 | 10 | 4.0 | 0.63 | 2.6 | 3 |
Claims (9)
- A substantially light-insensitive thermographic recording material comprising a substantially colourless support and a thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent for said substantially light-insensitive organic silver salt in thermal working relationship therewith and a binder,
characterized in that a blue pigment or dye having an absorption maximum in the wavelength range from 550 to 700 nm is present in said thermosensitive element and/or any other layer on either side of said support which provides a background for viewing in transmission images produced with said substantially light-insensitive thermographic recording material. - Substantially light-insensitive thermographic recording material according to claim 1, wherein said blue pigment or dye has an absorption maximum in the wavelength range from 570 to 630 nm.
- Substantially light-insensitive thermographic recording material according to claim 1 or 2, wherein said blue pigment or dye is selected from the group consisting of phthalocyanine dyes, phthalocyanine pigments, indanthrone dyes and indanthrone pigments.
- A thermographic recording process comprising the steps of: bringing a substantially light-insensitive thermographic recording material according to any of the preceding claims into the proximity of a heat source; imagewise heating of said substantially light-insensitive thermographic recording material with said heat source; and removing said substantially light-insensitive thermographic recording material from said heat source.
- A photothermographic recording material excluding a palladium compound comprising a substantially colourless support and a photo-addressable thermally developable element containing a substantially light-insensitive organic silver salt, an organic reducing agent for said substantially light-insensitive organic silver salt in thermal working relationship therewith, photosensitive silver halide in catalytic association with said substantially light-insensitive organic silver salt and a binder, characterized in that a blue pigment or dye having an absorption maximum in the wavelength range from 550 to 700 nm is present in said photo-addressable thermally developable element and/or any other layer on either side of said support.
- Photothermographic recording material according to claim 5, wherein said blue pigment or dye has an absorption maximum in the wavelength range from 570 to 630 nm.
- Photothermographic recording material according to claim 5 or 6, wherein said blue pigment or dye is selected from the group consisting of phthalocyanine dyes, phthalocyanine pigments, indanthrone dyes and indanthrone pigments.
- Photothermographic recording material according to any of claims 5 to 7, wherein the outermost layer on the opposite side of said support to said photo-addressable thermally developable element includes an antihalation dye.
- A photothermographic recording process comprising the steps of: bringing a photothermographic recording material according to any of claims 5 to 8 into the proximity of a source of actinic radiation; image-wise exposing said photothermographic recording material with said source of actinic radiation; bringing said image-wise exposed photothermographic recording material into the proximity of a heat source; uniformly heating said image-wise exposed photothermographic recording material; and removing said photothermographic recording material from said heat source.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98202002A EP0889355B1 (en) | 1997-07-04 | 1998-06-12 | (Photo) thermographic material with a blue background |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97202035 | 1997-07-04 | ||
EP97202035 | 1997-07-04 | ||
EP98202002A EP0889355B1 (en) | 1997-07-04 | 1998-06-12 | (Photo) thermographic material with a blue background |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0889355A1 true EP0889355A1 (en) | 1999-01-07 |
EP0889355B1 EP0889355B1 (en) | 2004-05-19 |
Family
ID=26146659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98202002A Expired - Lifetime EP0889355B1 (en) | 1997-07-04 | 1998-06-12 | (Photo) thermographic material with a blue background |
Country Status (1)
Country | Link |
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EP (1) | EP0889355B1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0919862A1 (en) * | 1997-11-26 | 1999-06-02 | Eastman Kodak Company | Photothermographic imaging element containing an antihalation dye |
EP0969313A1 (en) * | 1998-06-24 | 2000-01-05 | Eastman Kodak Company | Photothermographic element having desired color |
EP1004929A1 (en) * | 1998-11-27 | 2000-05-31 | Agfa-Gevaert N.V. | Black and white monosheet thermographic recording material with improved diagnostic capability |
EP1059560A1 (en) * | 1999-06-04 | 2000-12-13 | Agfa-Gevaert N.V. | Thermographic recording material with improved image tone |
US6284442B1 (en) | 1998-11-27 | 2001-09-04 | Agfa-Gevaert | Black and white thermographic recording material with improved diagnostic capability |
US6727057B2 (en) | 2002-03-29 | 2004-04-27 | Fuji Photo Film Co., Ltd. | Heat-developable photosensitive material |
EP1484641A1 (en) * | 2003-06-06 | 2004-12-08 | Agfa-Gevaert | Binders for use in the thermosensitive elements of substantially light-insensitive thermographic recording materials. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2548665A1 (en) * | 1974-10-30 | 1976-05-13 | Fuji Photo Film Co Ltd | HEAT DEVELOPMENT LIGHT SENSITIVE MATERIAL |
US4477562A (en) * | 1983-05-24 | 1984-10-16 | Minnesota Mining And Manufacturing Company | Dry strip antihalation layer for photothermographic film |
EP0439944A2 (en) * | 1990-01-31 | 1991-08-07 | Minnesota Mining And Manufacturing Company | Two-side imageable photothermographic paper |
-
1998
- 1998-06-12 EP EP98202002A patent/EP0889355B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2548665A1 (en) * | 1974-10-30 | 1976-05-13 | Fuji Photo Film Co Ltd | HEAT DEVELOPMENT LIGHT SENSITIVE MATERIAL |
US4477562A (en) * | 1983-05-24 | 1984-10-16 | Minnesota Mining And Manufacturing Company | Dry strip antihalation layer for photothermographic film |
EP0439944A2 (en) * | 1990-01-31 | 1991-08-07 | Minnesota Mining And Manufacturing Company | Two-side imageable photothermographic paper |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0919862A1 (en) * | 1997-11-26 | 1999-06-02 | Eastman Kodak Company | Photothermographic imaging element containing an antihalation dye |
EP0969313A1 (en) * | 1998-06-24 | 2000-01-05 | Eastman Kodak Company | Photothermographic element having desired color |
US6174657B1 (en) | 1998-06-24 | 2001-01-16 | Eastman Kodak Company | Photothermographic element having desired color |
EP1004929A1 (en) * | 1998-11-27 | 2000-05-31 | Agfa-Gevaert N.V. | Black and white monosheet thermographic recording material with improved diagnostic capability |
US6284442B1 (en) | 1998-11-27 | 2001-09-04 | Agfa-Gevaert | Black and white thermographic recording material with improved diagnostic capability |
EP1059560A1 (en) * | 1999-06-04 | 2000-12-13 | Agfa-Gevaert N.V. | Thermographic recording material with improved image tone |
US6727057B2 (en) | 2002-03-29 | 2004-04-27 | Fuji Photo Film Co., Ltd. | Heat-developable photosensitive material |
EP1484641A1 (en) * | 2003-06-06 | 2004-12-08 | Agfa-Gevaert | Binders for use in the thermosensitive elements of substantially light-insensitive thermographic recording materials. |
Also Published As
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