JPH0410875B2 - - Google Patents
Info
- Publication number
- JPH0410875B2 JPH0410875B2 JP60145198A JP14519885A JPH0410875B2 JP H0410875 B2 JPH0410875 B2 JP H0410875B2 JP 60145198 A JP60145198 A JP 60145198A JP 14519885 A JP14519885 A JP 14519885A JP H0410875 B2 JPH0410875 B2 JP H0410875B2
- Authority
- JP
- Japan
- Prior art keywords
- intermediate layer
- heat
- sensitive recording
- layer
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 24
- 239000001023 inorganic pigment Substances 0.000 claims description 11
- 239000012860 organic pigment Substances 0.000 claims description 11
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- 229920005992 thermoplastic resin Polymers 0.000 claims description 5
- 229920006026 co-polymeric resin Polymers 0.000 claims description 4
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 description 27
- 238000000576 coating method Methods 0.000 description 27
- 239000007788 liquid Substances 0.000 description 23
- 239000000203 mixture Substances 0.000 description 15
- 239000000049 pigment Substances 0.000 description 13
- 239000000126 substance Substances 0.000 description 13
- 239000007787 solid Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 11
- 239000000839 emulsion Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000001035 drying Methods 0.000 description 10
- 239000000975 dye Substances 0.000 description 9
- -1 silver halide Chemical class 0.000 description 9
- 239000004816 latex Substances 0.000 description 8
- 229920000126 latex Polymers 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 229920003048 styrene butadiene rubber Polymers 0.000 description 8
- 230000002378 acidificating effect Effects 0.000 description 7
- 239000004927 clay Substances 0.000 description 7
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- 150000003839 salts Chemical class 0.000 description 7
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- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 150000004665 fatty acids Chemical class 0.000 description 4
- 239000002609 medium Substances 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
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- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical compound C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 description 3
- 150000003951 lactams Chemical class 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920000609 methyl cellulose Polymers 0.000 description 3
- 239000001923 methylcellulose Substances 0.000 description 3
- 235000010981 methylcellulose Nutrition 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 150000002989 phenols Chemical class 0.000 description 3
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 2
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 2
- OMNHTTWQSSUZHO-UHFFFAOYSA-N 4-hydroxy-3,5-dimethylbenzoic acid Chemical compound CC1=CC(C(O)=O)=CC(C)=C1O OMNHTTWQSSUZHO-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- YXVFYQXJAXKLAK-UHFFFAOYSA-N biphenyl-4-ol Chemical compound C1=CC(O)=CC=C1C1=CC=CC=C1 YXVFYQXJAXKLAK-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 239000001273 butane Substances 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000008119 colloidal silica Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- RQAQWBFHPMSXKR-UHFFFAOYSA-N n-(4-chlorophenyl)-3-(phosphonooxy)naphthalene-2-carboxamide Chemical compound OP(O)(=O)OC1=CC2=CC=CC=C2C=C1C(=O)NC1=CC=C(Cl)C=C1 RQAQWBFHPMSXKR-UHFFFAOYSA-N 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- CLECMSNCZUMKLM-UHFFFAOYSA-N (4-ethenylphenyl)methanol Chemical compound OCC1=CC=C(C=C)C=C1 CLECMSNCZUMKLM-UHFFFAOYSA-N 0.000 description 1
- OAGNKYSIOSDNIG-UHFFFAOYSA-N 1-methyl-3-[2-(3-methylphenoxy)ethoxy]benzene Chemical compound CC1=CC=CC(OCCOC=2C=C(C)C=CC=2)=C1 OAGNKYSIOSDNIG-UHFFFAOYSA-N 0.000 description 1
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- ALLSOOQIDPLIER-UHFFFAOYSA-N 2,3,4-trichlorobenzoic acid Chemical compound OC(=O)C1=CC=C(Cl)C(Cl)=C1Cl ALLSOOQIDPLIER-UHFFFAOYSA-N 0.000 description 1
- FXNDIJDIPNCZQJ-UHFFFAOYSA-N 2,4,4-trimethylpent-1-ene Chemical group CC(=C)CC(C)(C)C FXNDIJDIPNCZQJ-UHFFFAOYSA-N 0.000 description 1
- DZZPJWJPJJNWHM-UHFFFAOYSA-N 2-hydroxy-3-(1-phenylethyl)benzoic acid Chemical compound C=1C=CC(C(O)=O)=C(O)C=1C(C)C1=CC=CC=C1 DZZPJWJPJJNWHM-UHFFFAOYSA-N 0.000 description 1
- XGAYQDWZIPRBPF-UHFFFAOYSA-N 2-hydroxy-3-propan-2-ylbenzoic acid Chemical compound CC(C)C1=CC=CC(C(O)=O)=C1O XGAYQDWZIPRBPF-UHFFFAOYSA-N 0.000 description 1
- XCSGHNKDXGYELG-UHFFFAOYSA-N 2-phenoxyethoxybenzene Chemical compound C=1C=CC=CC=1OCCOC1=CC=CC=C1 XCSGHNKDXGYELG-UHFFFAOYSA-N 0.000 description 1
- PFANXOISJYKQRP-UHFFFAOYSA-N 2-tert-butyl-4-[1-(5-tert-butyl-4-hydroxy-2-methylphenyl)butyl]-5-methylphenol Chemical compound C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(CCC)C1=CC(C(C)(C)C)=C(O)C=C1C PFANXOISJYKQRP-UHFFFAOYSA-N 0.000 description 1
- ZDRSNHRWLQQICP-UHFFFAOYSA-N 2-tert-butyl-4-[2-(3-tert-butyl-4-hydroxyphenyl)propan-2-yl]phenol Chemical compound C1=C(O)C(C(C)(C)C)=CC(C(C)(C)C=2C=C(C(O)=CC=2)C(C)(C)C)=C1 ZDRSNHRWLQQICP-UHFFFAOYSA-N 0.000 description 1
- MPKIZIGHGVKHDY-UHFFFAOYSA-N 2-tert-butyl-5-methylbenzene-1,4-diol Chemical compound CC1=CC(O)=C(C(C)(C)C)C=C1O MPKIZIGHGVKHDY-UHFFFAOYSA-N 0.000 description 1
- ABJAMKKUHBSXDS-UHFFFAOYSA-N 3,3-bis(6-amino-1,4-dimethylcyclohexa-2,4-dien-1-yl)-2-benzofuran-1-one Chemical compound C1=CC(C)=CC(N)C1(C)C1(C2(C)C(C=C(C)C=C2)N)C2=CC=CC=C2C(=O)O1 ABJAMKKUHBSXDS-UHFFFAOYSA-N 0.000 description 1
- ZWQBZEFLFSFEOS-UHFFFAOYSA-N 3,5-ditert-butyl-2-hydroxybenzoic acid Chemical compound CC(C)(C)C1=CC(C(O)=O)=C(O)C(C(C)(C)C)=C1 ZWQBZEFLFSFEOS-UHFFFAOYSA-N 0.000 description 1
- MQJTWPAGXWPEKU-UHFFFAOYSA-N 3-[4-(dimethylamino)phenyl]-3-(1,2-dimethylindol-3-yl)-2-benzofuran-1-one Chemical compound C1=CC(N(C)C)=CC=C1C1(C=2C3=CC=CC=C3N(C)C=2C)C2=CC=CC=C2C(=O)O1 MQJTWPAGXWPEKU-UHFFFAOYSA-N 0.000 description 1
- ZKUWHPNJONEJEE-UHFFFAOYSA-N 3-[4-(dimethylamino)phenyl]-3-(2-methyl-1h-indol-3-yl)-2-benzofuran-1-one Chemical compound C1=CC(N(C)C)=CC=C1C1(C=2C3=CC=CC=C3NC=2C)C2=CC=CC=C2C(=O)O1 ZKUWHPNJONEJEE-UHFFFAOYSA-N 0.000 description 1
- YUVVASYGZFERRP-UHFFFAOYSA-N 3-benzyl-2-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=CC(CC=2C=CC=CC=2)=C1O YUVVASYGZFERRP-UHFFFAOYSA-N 0.000 description 1
- RWVOCFCXPXXMMJ-UHFFFAOYSA-N 3-butan-2-yl-4-hydroxybenzoic acid Chemical compound CCC(C)C1=CC(C(O)=O)=CC=C1O RWVOCFCXPXXMMJ-UHFFFAOYSA-N 0.000 description 1
- JCGRUCSGOUFSCY-UHFFFAOYSA-N 3-chloro-2-hydroxy-5-(1-phenylethyl)benzoic acid Chemical compound C=1C(Cl)=C(O)C(C(O)=O)=CC=1C(C)C1=CC=CC=C1 JCGRUCSGOUFSCY-UHFFFAOYSA-N 0.000 description 1
- HINSTNAJIHVPOM-UHFFFAOYSA-N 3-cyclohexyl-4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C(C2CCCCC2)=C1 HINSTNAJIHVPOM-UHFFFAOYSA-N 0.000 description 1
- ZAAMQANODYDRDF-UHFFFAOYSA-N 3-tert-butyl-2-hydroxybenzoic acid Chemical compound CC(C)(C)C1=CC=CC(C(O)=O)=C1O ZAAMQANODYDRDF-UHFFFAOYSA-N 0.000 description 1
- BOTKTAZUSYVSFF-UHFFFAOYSA-N 4-(2,4,4-trimethylpentan-2-yl)benzene-1,2-diol Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(O)C(O)=C1 BOTKTAZUSYVSFF-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- YQCYTFDSLFLXRJ-UHFFFAOYSA-N 4-[2-(4-benzhydryloxycarbonylphenoxy)ethoxy]benzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1OCCOC1=CC=C(C(=O)OC(C=2C=CC=CC=2)C=2C=CC=CC=2)C=C1 YQCYTFDSLFLXRJ-UHFFFAOYSA-N 0.000 description 1
- XURABDHWIADCPO-UHFFFAOYSA-N 4-prop-2-enylhepta-1,6-diene Chemical compound C=CCC(CC=C)CC=C XURABDHWIADCPO-UHFFFAOYSA-N 0.000 description 1
- KDVYCTOWXSLNNI-UHFFFAOYSA-N 4-t-Butylbenzoic acid Chemical compound CC(C)(C)C1=CC=C(C(O)=O)C=C1 KDVYCTOWXSLNNI-UHFFFAOYSA-N 0.000 description 1
- QHPQWRBYOIRBIT-UHFFFAOYSA-N 4-tert-butylphenol Chemical compound CC(C)(C)C1=CC=C(O)C=C1 QHPQWRBYOIRBIT-UHFFFAOYSA-N 0.000 description 1
- RNRINRUTVAFUCG-UHFFFAOYSA-N 5-(dimethylamino)-3,3-bis(1,2-dimethylindol-3-yl)-2-benzofuran-1-one Chemical compound C1=CC=C2C(C3(C=4C5=CC=CC=C5N(C)C=4C)OC(=O)C4=CC=C(C=C43)N(C)C)=C(C)N(C)C2=C1 RNRINRUTVAFUCG-UHFFFAOYSA-N 0.000 description 1
- WYWMJBFBHMNECA-UHFFFAOYSA-N 6-(dimethylamino)-3,3-bis(1,2-dimethylindol-3-yl)-2-benzofuran-1-one Chemical compound C1=CC=C2C(C3(C=4C5=CC=CC=C5N(C)C=4C)OC(=O)C=4C3=CC=C(C=4)N(C)C)=C(C)N(C)C2=C1 WYWMJBFBHMNECA-UHFFFAOYSA-N 0.000 description 1
- VUPFPYYWAFXPEE-UHFFFAOYSA-N 6-(dimethylamino)-3,3-bis(2-phenyl-1h-indol-3-yl)-2-benzofuran-1-one Chemical compound C=1C(N(C)C)=CC=C2C=1C(=O)OC2(C=1C2=CC=CC=C2NC=1C=1C=CC=CC=1)C(C1=CC=CC=C1N1)=C1C1=CC=CC=C1 VUPFPYYWAFXPEE-UHFFFAOYSA-N 0.000 description 1
- MUWBLPSPEGTPEH-UHFFFAOYSA-N 6-(dimethylamino)-3,3-bis(9-ethylcarbazol-3-yl)-2-benzofuran-1-one Chemical compound C1=CC=C2C3=CC(C4(C5=CC=C(C=C5C(=O)O4)N(C)C)C=4C=C5C6=CC=CC=C6N(C5=CC=4)CC)=CC=C3N(CC)C2=C1 MUWBLPSPEGTPEH-UHFFFAOYSA-N 0.000 description 1
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- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- MOZDKDIOPSPTBH-UHFFFAOYSA-N Benzyl parahydroxybenzoate Chemical compound C1=CC(O)=CC=C1C(=O)OCC1=CC=CC=C1 MOZDKDIOPSPTBH-UHFFFAOYSA-N 0.000 description 1
- HTVITOHKHWFJKO-UHFFFAOYSA-N Bisphenol B Chemical compound C=1C=C(O)C=CC=1C(C)(CC)C1=CC=C(O)C=C1 HTVITOHKHWFJKO-UHFFFAOYSA-N 0.000 description 1
- SDDLEVPIDBLVHC-UHFFFAOYSA-N Bisphenol Z Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)CCCCC1 SDDLEVPIDBLVHC-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
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- 244000060011 Cocos nucifera Species 0.000 description 1
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- IPAJDLMMTVZVPP-UHFFFAOYSA-N Crystal violet lactone Chemical compound C1=CC(N(C)C)=CC=C1C1(C=2C=CC(=CC=2)N(C)C)C2=CC=C(N(C)C)C=C2C(=O)O1 IPAJDLMMTVZVPP-UHFFFAOYSA-N 0.000 description 1
- MDNWOSOZYLHTCG-UHFFFAOYSA-N Dichlorophen Chemical compound OC1=CC=C(Cl)C=C1CC1=CC(Cl)=CC=C1O MDNWOSOZYLHTCG-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
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- 239000004716 Ethylene/acrylic acid copolymer Chemical class 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
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- AMIMRNSIRUDHCM-UHFFFAOYSA-N Isopropylaldehyde Chemical compound CC(C)C=O AMIMRNSIRUDHCM-UHFFFAOYSA-N 0.000 description 1
- 241000254158 Lampyridae Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
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- 229920001890 Novodur Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229920007962 Styrene Methyl Methacrylate Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- QROGIFZRVHSFLM-QHHAFSJGSA-N [(e)-prop-1-enyl]benzene Chemical compound C\C=C\C1=CC=CC=C1 QROGIFZRVHSFLM-QHHAFSJGSA-N 0.000 description 1
- ZKURGBYDCVNWKH-UHFFFAOYSA-N [3,7-bis(dimethylamino)phenothiazin-10-yl]-phenylmethanone Chemical compound C12=CC=C(N(C)C)C=C2SC2=CC(N(C)C)=CC=C2N1C(=O)C1=CC=CC=C1 ZKURGBYDCVNWKH-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 150000001241 acetals Chemical class 0.000 description 1
- 238000007754 air knife coating Methods 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000011805 ball Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 150000008366 benzophenones Chemical class 0.000 description 1
- FQUNFJULCYSSOP-UHFFFAOYSA-N bisoctrizole Chemical compound N1=C2C=CC=CC2=NN1C1=CC(C(C)(C)CC(C)(C)C)=CC(CC=2C(=C(C=C(C=2)C(C)(C)CC(C)(C)C)N2N=C3C=CC=CC3=N2)O)=C1O FQUNFJULCYSSOP-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000001989 diazonium salts Chemical class 0.000 description 1
- MHDVGSVTJDSBDK-UHFFFAOYSA-N dibenzyl ether Chemical compound C=1C=CC=CC=1COCC1=CC=CC=C1 MHDVGSVTJDSBDK-UHFFFAOYSA-N 0.000 description 1
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 description 1
- 229960001826 dimethylphthalate Drugs 0.000 description 1
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- YHAIUSTWZPMYGG-UHFFFAOYSA-L disodium;2,2-dioctyl-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCCCCCC(C([O-])=O)(C(C([O-])=O)S(O)(=O)=O)CCCCCCCC YHAIUSTWZPMYGG-UHFFFAOYSA-L 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- OJLOUXPPKZRTHK-UHFFFAOYSA-N dodecan-1-ol;sodium Chemical compound [Na].CCCCCCCCCCCCO OJLOUXPPKZRTHK-UHFFFAOYSA-N 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- HSEMFIZWXHQJAE-UHFFFAOYSA-N hexadecanamide Chemical compound CCCCCCCCCCCCCCCC(N)=O HSEMFIZWXHQJAE-UHFFFAOYSA-N 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- XHQSLVIGPHXVAK-UHFFFAOYSA-K iron(3+);octadecanoate Chemical compound [Fe+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XHQSLVIGPHXVAK-UHFFFAOYSA-K 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- ADFPJHOAARPYLP-UHFFFAOYSA-N methyl 2-methylprop-2-enoate;styrene Chemical compound COC(=O)C(C)=C.C=CC1=CC=CC=C1 ADFPJHOAARPYLP-UHFFFAOYSA-N 0.000 description 1
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 239000011806 microball Substances 0.000 description 1
- VYQNWZOUAUKGHI-UHFFFAOYSA-N monobenzone Chemical compound C1=CC(O)=CC=C1OCC1=CC=CC=C1 VYQNWZOUAUKGHI-UHFFFAOYSA-N 0.000 description 1
- 229960000990 monobenzone Drugs 0.000 description 1
- FTQWRYSLUYAIRQ-UHFFFAOYSA-N n-[(octadecanoylamino)methyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCNC(=O)CCCCCCCCCCCCCCCCC FTQWRYSLUYAIRQ-UHFFFAOYSA-N 0.000 description 1
- MGNPLIACIXIYJE-UHFFFAOYSA-N n-fluoroaniline Chemical compound FNC1=CC=CC=C1 MGNPLIACIXIYJE-UHFFFAOYSA-N 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000010680 novolac-type phenolic resin Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920001483 poly(ethyl methacrylate) polymer Polymers 0.000 description 1
- 229920000205 poly(isobutyl methacrylate) Polymers 0.000 description 1
- 229920003214 poly(methacrylonitrile) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920005553 polystyrene-acrylate Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 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
- 238000003825 pressing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000001016 thiazine dye Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Description
「産業上の利用分野」
本発明は感熱記録体に関し、特に低濃度から高
濃度に至るいずれの領域においても印字画素（ド
ツト）の再現性に優れた感熱記録体に関するもの
である。
「従来の技術」
従来、発色剤と該発色剤と接触して呈色する呈
色剤との呈色反応を利用し、熱により両発色物質
を接触せしめて発色像を得るようにした感熱記録
体は良く知られている。かかる感熱記録体は比較
的安価であり、また記録機器がコンパクトでかつ
その保守も比較的容易であるため、フアクシミリ
や各種計算機等の記録媒体としてのみならず巾広
い分野において使用されている。
そして、用途の多様化に伴い、低濃度から高濃
度に至るいずれの領域においても印字画素の再現
性に優れ、かつ銀塩写真に匹敵するような高画質
の記録像が得られる感熱記録体への要望が高まり
つつある。
一方、記録機器の高速化に伴う印字エネルギー
の低下を補う目的で、支持体上に熱発泡剤と熱可
塑性高分子からなる層を設け、この層を加熱して
得たスポンジ状のアンダーコート層を利用する方
法（特開昭59−171685）などが提案されている。
しかし、これらの方法では、熱発泡剤を発泡させ
る工程が必要であるのみならず、かかる工程に起
因して新たな欠陥が付随するため、必ずしも満足
すべき結果は得られていない。即ち、熱発泡層の
形成によつて、微小なエネルギーでも比較的高濃
度の記録像は得られるものの、発泡の度合をコン
トロールすることが難しいため、均一な発泡層を
形成するのが困難である。そのため、発泡層の上
に顔料コート層を設けて平滑性を改良する方法
（特開昭59−225987）も提案されてはいるが、記
録層に微細な凹凸が残つてしまい、結果として高
度の印字画素再現性を備えた感熱記録体を得るに
は至つていないものである。
「発明が解決しようとする問題点」
本発明の目的は、低濃度から高濃度に至るいず
れの領域においても印字画素の再現性に優れ、か
つ高画質の記録像が得られる感熱記録体を提供す
るところにあり、かかる目的は支持体と感熱記録
層との間に特定の中間層を設けることにより達成
される。
「問題点を解決するための手段」
本発明は、支持体上に発色剤と該発色剤と反応
して発色せしめる呈色剤を含有する感熱記録層を
設けた感熱記録体において、該支持体と感熱記録
層との間に、熱可塑性樹脂からなる外径5μｍ以
下の非発泡性微小中空粒子を含有する中間層、及
び、無機または有機顔料を含有する中間層とを設
けたことを特徴とする感熱記録体である。
「作用」
本発明の感熱記録体は上記の如く、支持体と記
録層との間に、熱可塑性樹脂からなる外径5μｍ
以下の非発泡性微小中空粒子を含有する中間層、
及び、無機または有機顔料を含有する中間層とを
設けるところに重大な特徴を有するものである。
かかる非発泡性微小中空粒子としては、各種の
物質が知られているが、本発明では、特に外径が
5μｍ以下のものを選択的に使用するものであり、
より好ましくは2μｍ以下、最も好ましくは1μｍ
以下の外径を有する中空粒子の使用が望ましい。
なお、外径が5μｍを越える中空粒子や、内部に
プロパン、ブタン等の低沸点物質を含有する中空
粒子では、本発明の目的である画素再現性に優れ
た感熱記録体を得ることができない。
本発明で用いられる上記特定の非発泡性微小中
空粒子は、熱可塑性樹脂で形成されるものである
が、例えば記録時の熱等で変形すると、本発明の
所望の効果が損なわれる恐れもあるため、50℃以
上のガラス転移温度を有する物質が好ましく用い
られる。具体的には、ポリスチレン、ポリ−α−
メチルスチレン、ポリ−β−メチルスチレンなど
のスチレン系樹脂、ポリメタクリル酸メチル、ポ
リメタクリル酸エチル、ポリメタクリル酸イソプ
ロピル、ポリメタクリル酸イソブチル、ポリアク
リロニトリル、ポリメタクリロニトリルなどのア
クリル系樹脂の他、ポリ塩化ビニル、ポリテトラ
フルオロエチレン、ポリビニルアルコール、ポリ
−ｏ−ビニルベンジルアルコール、ポリ−ｍ−ビ
ニルベンジルアルコール、ポリ−ｐ−ビニルベン
ジルアルコール、ポリビニルホルマール、ポリビ
ニルアセタール、ポリビニルプロピオナール、ポ
リビニルブチラール、ポリビニルイソブチラー
ル、ポリビニル−tert−ブチルエーテル、ポリビ
ニルピロリドン、ポリビニルカルバゾール、酢酸
セルロース、三酢酸セルロース、ポリカーボネー
ト、さらにはこれらの共重合体等が例示される。
これらのうちでも、スチレン系樹脂、アクリル系
樹脂またはスチレン−アクリル系共重合体樹脂が
好ましく、特にポリスチレンまたはスチレン−メ
タクリル酸メチル共重合体からなる微小中空粒子
は、適当な硬さ、弾力性および耐熱性を有するた
め、とりわけ好ましく用いられるものである。
かかる特定の微小中空粒子は、一般に感熱記録
層を構成する後述の如きバインダー中に分散して
中間層用の塗液とされるが、特に、エマルジヨン
（ラテツクス）系のバインダーは良好な塗液安定
性を与え、しかも弾力性に優れた中間層が得られ
るため、より好ましく用いられる。
なお、微小中空粒子の配合割合は、使用する中
空粒子の外径およびその壁厚などに応じて調節さ
れるため、特に限定するものではないが、中空粒
子の樹脂成分が中間層の全固形分に対して５〜95
重量％、好ましくは60〜85重量％の範囲となるよ
うに配合するのが望ましい。また、塗液中には、
本発明の効果を阻害しない範囲で、無機または有
機顔料等を添加することもできる。塗布量につい
ては特に限定するものではなく、一般には３〜30
ｇ／m2、好ましくは６〜20ｇ／m2程度塗布され
る。
本発明の感熱記録体では、上記の如き特定の微
小中空粒子を含有する中間層に加えて、さらに無
機または有機顔料を含有する中間層をも設けるも
のであるが、この中間層に含有せしめられる無機
または有機顔料としては、例えば感熱記録層中に
添加される後述の如き材料が例示される。なかで
も80〜200ml／100ｇ程度の吸油量を有する顔料が
好ましく、また粒子径は2μｍ以下のものが望ま
しい。
これらの顔料は、通常のバインダーに分散さ
れ、必要に応じて粉砕処理が施された後、中間層
用の塗液とされる。顔料の配合割合は、使用する
顔料の種類等に応じて適宜調節されるものであ
り、特に限定するものではないが、中間層の全固
形分に対して５〜95重量％、好ましくは60〜85重
量％となるように配合するのが望ましい。塗布量
も特に限定するものではないが、一般には５〜35
ｇ／m2、好ましくは10〜25ｇ／m2程度の範囲で調
節される。
本発明の感熱記録体は、支持体と記録層との間
に、上記の如き異なつた２種類の中間層を設けた
ところに重大な特徴を有するものであるが、その
層構成については特に限定するものではない。即
ち、２種類の中間層が支持体と記録層との間に少
なくとも１層ずつ設けられていればよく、いずれ
か一方の中間層が複数層設けられた構成や、２種
類が交互に複数層ずつ設けられた構成等も包含さ
れるものである。
しかし、感熱記録層と接する層は、無機または
有機顔料を含有する層である方が画素再現性の点
で好ましい。
なお、無機または有機顔料を含有する層を複数
層設ける際には、それぞれの層で含有せしめる顔
料を変えることも勿論可能である。
本発明において、支持体上に中間層を形成する
方法等については特に限定されるものではなく、
従来から周知慣用の技術に従つて塗布・乾燥し、
形成することができる。かくして得られた中間層
上に、感熱記録層が塗布・乾燥せしめられ、本発
明の感熱記録体が製造される。
本発明において記録層に含有される発色剤と呈
色剤の組合せについては特に限定されるものでは
なく、熱によつて両者が接触して呈色反応を起こ
すような組合せなら何れも使用可能であり、例え
ば無色ないし淡色の塩基性染料と無機ないし有機
の酸性物質との組合せ、ステアリン酸第二鉄など
の高級脂肪酸金属塩と没食子酸のようなフエノー
ル類との組合せなどが例示される。さらに、ジア
ゾニウム化合物、カプラー及び塩基性物質を組合
せた感熱記録体など、熱によつて顕色像（記録
像）を得るようにした各種の感熱記録体への適用
も可能であり、本発明はこれらの記録体をも包含
するものである。
しかし、支持体上に設けられる本発明の特定の
中間層は、特に塩基性染料と酸性物質との組合せ
において優れた効果を発揮するため、とりわけか
かる組合せに好ましく用いられる。
無色ないし淡色の塩基性染料としては各種のも
のが公知であり、例えば下記が例示される。
３，３−ビス（ｐ−ジメチルアミノフエニル）
−６−ジメチルアミノフタリド、３，３−ビス
（ｐ−ジメチルアミノフエニル）フタリド、３−
（ｐ−ジメチルアミノフエニル）−３−（１，２−
ジメチルインドール−３−イル）フタリド、３−
（ｐ−ジメチルアミノフエニル）−３−（２−メチ
ルインドール−３−イル）フタリド、３，３−ビ
ス（１，２−ジメチルインドール−３−イル）−
５−ジメチルアミノフタリド、３，３−ビス
（１，２−ジメチルインドール−３−イル）−６−
ジメチルアミノフタリド、３，３−ビス（９−エ
チルカルバゾール−３−イル）−６−ジメチルア
ミノフタリド、３，３−ビス（２−フエニルイン
ドール−３−イル）−６−ジメチルアミノフタリ
ド、３−ｐ−ジメチルアミノフエニル−３−（１
−メチルピロール−３−イル）−６−ジメチルア
ミノフタリド等のトリアリルメタン系染料、４，
4′−ビス−ジメチルアミノベンズヒドリルベンジ
ルエーテル、Ｎ−ハロフエニル−ロイコオーラミ
ン、Ｎ−２，４，５−トリクロロフエニルロイコ
オーラミン等のジフエニルメタン系染料、ベンゾ
イルロイコメチレンブルー、ｐ−ニトロベンゾイ
ルロイコメチレンブルー等のチアジン系染料、３
−メチル−スピロ−ジナフトピラン、３−エチル
−スピロ−ジナフトピラン、３−フエニル−スピ
ロ−ジナフトピラン、３−ベンジル−スピロ−ジ
ナフトピラン、３−メチル−ナフト−（6′−メト
キシベンゾ）スピロピラン、３−プロピル−スピ
ロ−ジベンゾピラン等のスピロ系染料、ローダミ
ン−Ｂアニリノラクタム、ローダミン（ｐ−ニト
ロアニリノ）ラクタム、ローダミン（ｏ−クロロ
アニリノ）ラクタム等のラクタム系染料、３−ジ
メチルアミノ−７−メトキシフルオラン、３−ジ
エチルアミノ−６−メトキシフルオラン、３−ジ
エチルアミノ−７−メトキシフルオラン、３−ジ
エチルアミノ−７−クロロフルオラン、３−ジエ
チルアミノ−６−メチル−７−クロロフルオラ
ン、３−ジエチルアミノ−６，７−ジメチルフル
オラン、３−（Ｎ−エチル−ｐ−トルイジノ）−７
−メチルフルオラン、３−ジエチルアミノ−７−
Ｎ−アセチル−Ｎ−メチルアミノフルオラン、３
−ジエチルアミノ−７−Ｎ−メチルアミノフルオ
ラン、３−ジエチルアミノ−７−ジベンジルアミ
ノフルオラン、３−ジエチルアミノ−７−Ｎ−メ
チル−Ｎ−ベンジルアミノフルオラン、３−ジエ
チルアミノ−７−Ｎ−クロロエチル−Ｎ−メチル
アミノフルオラン、３−ジエチルアミノ−７−Ｎ
−ジエチルアミノフルオラン、３−（Ｎ−エチル
−ｐ−トルイジノ）−６−メチル−７−フエニル
アミノフルオラン、３−（Ｎ−シクロペンチル−
Ｎ−エチルアミノ）−６−メチル−７−アニリノ
フルオラン、３−（Ｎ−エチル−ｐ−トルイジノ）
−６−メチル−７−（ｐ−トルイジノ）フルオラ
ン、３−ジエチルアミノ−６−メチル−７−フエ
ニルアミノフルオラン、３−ジエチルアミノ−７
−（２−カルボメトキシ−フエニルアミノ）フル
オラン、３−（Ｎ−エチル−Ｎ−イソアミルアミ
ノ）−６−メチル−７−フエニルアミノフルオラ
ン、３−（Ｎ−シクロヘキシル−Ｎ−メチルアミ
ノ）−６−メチル−７−フエニルアミノフルオラ
ン、３−ピロリジノ−６−メチル−７−フエニル
アミノフルオラン、３−ピペリジノ−６−メチル
−７−フエニルアミノフルオラン、３−ジエチル
アミノ−６−メチル−７−キシリジノフルオラ
ン、３−ジエチルアミノ−７−（ｏ−クロロフエ
ニルアミノ）フルオラン、３−ジブチルアミノ−
７−（ｏ−クロロフエニルアミノ）フルオラン、
３−ピロリジノ−６−メチル−７−ｐ−ブチルフ
エニルアミノフルオラン、３−Ｎ−メチル−Ｎ−
テトラヒドロフルフリルアミノ−６−メチル−７
−アニリノフルオラン、３−Ｎ−エチル−Ｎ−テ
トラヒドロフルフリルアミノ−６−メチル−７−
アニリノフルオラン等のフルオラン系染料等。
また塩基性染料と接触して呈色する無機ないし
有機の酸性物質も各種のものが公知であり、例え
ば下記が例示される。
活性白土、酸性白土、アタパルジヤイト、ベン
トナイト、コロイダルシリカ、珪酸アルミニウム
などの無機酸性物質、４−tert−ブチルフエノー
ル、４−ヒドロキシジフエノキシド、αーナフト
ール、β−ナフトール、４−ヒドロキシアセトフ
エノール、４−tert−オクチルカテコール、２，
2′−ジヒドロキシジフエノール、２，2′−メチレ
ンビス（４−メチル−６−tert−イソブチルフエ
ノール）、４，4′−イソプロピリデンビス（２−
tert−ブチルフエノール）、４，4′−sec−ブチリ
デンジフエノール、４−フエニルフエノール、
４，4′−イソプロピリデンジフエノール（ビスフ
エノールＡ）、２，2′−メチレンビス（４−クロ
ルフエノール）、ハイドロキノン、４，4′−シク
ロヘキシリデンジフエノール、４−ヒドロキシ安
息香酸ベンジル、４−ヒドロキシフタル酸ジメチ
ル、ヒドロキノンモノベンジルエーテル、ノボラ
ツク型フエノール樹脂、フエノール重合体などの
フエノール性化合物、安息香酸、ｐ−tert−ブチ
ル安息香酸、トリクロル安息香酸、テレフタル
酸、３−sec−ブチル−４−ヒドロキシ安息香酸、
３−シクロヘキシル−４−ヒドロキシ安息香酸、
３，５−ジメチル−４−ヒドロキシ安息香酸、サ
リチル酸、３−イソプロピルサリチル酸、３−
tert−ブチルサリチル酸、３−ベンジルサリチル
酸、３−（α−メチルベンジル）サリチル酸、３
−クロル−５−（α−メチルベンジル）サリチル
酸、３，５−ジ−tert−ブチルサリチル酸、３−
フエニル−５−（α，α−ジメチルベンジル）サ
リチル酸、３，５−ジ−α−メチルベンジルサリ
チル酸などの芳香族カルボン酸、およびこれらフ
エノール性化合物、芳香族カルボン酸と例えば亜
鉛、マグネシウム、アルミニウム、カルシウム、
チタン、マンガン、スズ、ニツケルなどの多価金
属との塩などの有機酸性物質等が例示される。
本発明の感熱記録体において、記録層中の発色
剤と呈色剤の使用比率は用いられる発色剤、呈色
剤の種類に応じて適宜選択されるもので、特に限
定するものではないが、例えば塩基性無色染料と
酸性物質を用いる場合には、一般に塩基性無色染
料１重量部に対して１〜50重量部、好ましくは１
〜10重量部の酸性物質が使用される。
これらの物質を含む塗布液の調製には、一般に
水を分散媒体とし、ボールミル、アトライター、
サンドミル等の攪拌、粉砕機により発色剤と呈色
剤とを一緒に又は別々に分散し、塗液として調製
される。
かかる塗液中には、通常バインダーとしてデン
プン類、ヒドロキシエチルセルロース、メチルセ
ルロース、カルボキシメチルセルロース、ゼラチ
ン、カゼイン、アラビアゴム、ポリビニルアルコ
ール、ジイソブチレン・無水マレイン酸共重合体
塩、スチレン・無水マレイン酸共重合体塩、エチ
レン・アクリル酸共重合体塩、スチレン・アクリ
ル酸共重合体塩、天然ゴム系エマルジヨン、スチ
レン・ブタジエン共重合体エマルジヨン、アクリ
ロニトリル・ブタジエン共重合体エマルジヨン、
メチルメタクリレート・ブタジエン共重合体エマ
ルジヨン、ポリクロロプレンエマルジヨン、酢酸
ビニルエマルジヨン、エチレン・酢酸ビニルエマ
ルジヨンなどが全固形分の10〜70重量％、好まし
くは15〜50重量％用いられる。さらに、塗液中に
は各種の助剤を添加することができる。例えば、
ジオクチルスルフオコハク酸ナトリウム、ドデシ
ルベンゼンスルフオン酸ナトリウム、ラウリルア
ルコール硫酸エステル・ナトリウム塩、アルギン
酸塩、脂肪酸金属塩などの分散剤、ベンゾフエノ
ン系、トリアゾール系などの紫外線吸収剤、その
他消泡剤、螢光染料、着色染料などが挙げられ
る。
また必要に応じてステアリン酸亜鉛、ステアリ
ン酸カルシウム、ポリエチレンワツクス、カルナ
バロウ、パラフインワツクス、エステルワツクス
などの滑剤、炭酸カルシウム、酸化亜鉛、酸化ア
ルミニウム、二酸化チタン、二酸化珪素、水酸化
アルミニウム、硫酸バリウム、硫酸亜鉛、タル
ク、カオリン、クレー、焼成クレー、コロイダル
シリカ等の無機顔料、スチレンマイクロボール、
ナイロンパウダー、ポリエチレンパウダー、尿
素・ホルマリン樹脂フイラー、生澱粉粒等の有機
顔料、ステアリン酸アミド、ステアリン酸メチレ
ンビスアミド、オレイン酸アミド、パルミチン酸
アミド、ヤシ脂肪酸アミド等の脂肪酸アミド類、
ジベンジルテレフタレート、１，２−ジ（３−メ
チルフエノキシ）エタン、１，２−ジフエノキシ
エタン、４，4′−エチレンジオキシ−ビス−安息
香酸ジフエニルメチルエステル、２，2′−メチレ
ンビス（４−メチル−６−tert−ブチルフエノー
ル）、４，4′−ブチリデンビス（６−tert−ブチル
−３−メチルフエノール）、１，１，３−トリス
（２−メチル−４−ヒドロキシ−５−tert−ブチ
ルフエノール）ブタン等のヒンダードフエノール
類および各種公知の熱可融性物質を併用すること
もできる。
なお、記録層中に無機ないし有機顔料を含有せ
しめる場合には、なるべく粒子径の小さな顔料を
用いることが好ましく、特に平均粒子径が2μｍ
以下の顔料を用いるのが望ましい。
本発明の感熱記録体において、記録層の形成方
法等については特に限定されるものではなく、従
来から周知慣用の技術に従つて形成することがで
き、例えばエアーナイフコーテイング、ブレード
コーテイング等により塗液を後述の中間層を設け
た支持体上に塗布・乾燥する方法によつて形成さ
れる。また、塗液の塗布量についても特に限定さ
れるものではないが、通常乾燥重量で２〜12ｇ／
m2、好ましくは３〜10ｇ／m2程度の範囲である。
また、支持体についても特に限定するものでは
なく、上質紙、ヤンキーマシンで抄造した原紙、
片面艶出し原紙、両面艶出し原紙、キヤストコー
ト紙、アート紙、コート紙、中質コート紙等の紙
類、合成繊維紙、合成樹脂フイルム等が適宜使用
される。
なお、各中間層および記録層を塗布・乾燥後、
必要に応じてスーパーカレンダー掛け等の平滑化
処理を施すこともできる。さらに、記録層上に記
録層を保護する等の目的でオーバーコート層を設
けることも可能であり、支持体に裏塗り層を設け
るなど感熱記録体分野における各種の公知技術が
付加し得るものである。
かくして得られる本発明の感熱記録体は、低濃
度から高濃度のいずれの領域においても画素再現
性に優れ、しかも高画質の記録像を得ることがで
きる極めて優れた記録体である。
かかる効果が得られる理由については明らかで
はないが、支持体と感熱記録層との間に、特定の
微小中空粒子を含有する中間層と顔料を含有する
中間層とを設けることによつて、微細な中空粒子
の層が下層表面の凹凸を充填し、次いで塗布され
る塗液の浸透を抑制すると共に、弾力性を付与す
るように機能し、一方、顔料を含有する中間層が
平滑な表面を形成し、かつ断熱層として機能する
ために、このように優れた効果が得られるものと
推測される。
以下に実施例を示し、本発明をより具体的に説
明するが、勿論これらに限定されるものではな
い。また、特に断らない限り例中の部および％は
それぞれ重量部及び重量％を示す。
実施例 １
〔中間層−１の形成〕
ポリスチレン樹脂からなる微小中空粒子のエマ
ルジヨン（商品名：VONCOAT Exp.PP−
199、固形分：50％、外径：0.2〜0.3μｍ、大日
本インキ化学工業(株)製） 140部
スチレン・ブタジエン共重合体ラテツクス（固
形分：48％） 40部
水 20部
上記の組成物を混合し、中間層−１の塗液を得
た。得られた塗液を坪量50ｇ／m2の上質紙に、乾
燥後の付着量が10ｇ／m2となるように塗布乾燥し
た。
〔中間層−２の形成〕
焼成クレー（商品名：ANSILEX、平均粒子
径：0.6μｍ、吸油量：96ml／100ｇ、
ENGELHARD社製） 70部
スチレン・ブタジエン共重合体ラテツクス（固
形分：48％） 60部
水 90部
上記の組成物を混合し、中間層−２の塗液を得
た。得られた塗液を上記で得た中間層−１の上
に、乾燥後の付着量が12ｇ／m2となるように塗
布・乾燥した後、スーパーキヤレンダー掛けし
た。
〔感熱記録層の形成〕
Ａ液調成
３−（Ｎ−シクロヘキシル−Ｎ−メチルアミノ）
−６−メチル−７−フエニルアミノフルオラン
10部
ジベンジルテレフタレート 20部
メチルセルロース５％水溶液 15部
水 80部
この組成物をサンドミルで平均粒子径が3μｍ
となるまで粉砕した。
Ｂ液調成
４，4′−イソプロピリデンジフエノール 30部
メチルセルロース５％水溶液 30部
水 70部
この組成物をサンドグラインダーで平均粒子径
が3μｍとなるまで粉砕した。
記録層の形成
Ａ液125部、Ｂ液130部、酸化珪素顔料（商品
名：ミズカシルＰ−527、平均粒子径：1.8μｍ、
吸油量：180ml／100ｇ、水澤化学社製）30部、20
％酸化澱粉水溶液150部、水55部を混合、攪拌し
塗液とした。
得られた感熱記録層用塗液を上記で得た中間層
−２の上に、乾燥後の塗布量が5.0ｇ／m2となる
ように塗布乾燥し、スーパーキヤレンダー掛けし
て感熱記録紙を得た。
実施例 ２
〔中間層−１の形成〕において、下記組成の中
間層−１を設けた以外は実施例１と同様にして感
熱記録紙を得た。
〔中間層−１〕
スチレン−アクリル系共重合体樹脂からなる微
小中空粒子のエマルジヨン（商品名：
VONCOAT PP−1000、固形分：45％、外
径：0.3〜0.4μｍ、大日本インキ化学工業(株)製）
155部
スチレン・ブタジエン共重合体ラテツクス（固
形分：48％） 40部
水 ５部
上記の組成物を混合し、中間層−１の塗液を得
た。
実施例 ３
〔中間層−２の形成〕において、下記組成から
なる中間層−２を乾燥後の付着量が６ｇ／m2とな
るように塗布乾燥し、さらにその上に下記組成か
らなる中間層−３を乾燥後の付着量が６ｇ／m2と
なるように塗布乾燥した後、スーパーキヤレンダ
ー掛けした以外は、実施例２と同様にして感熱記
録紙を得た。
〔中間層−２〕
二酸化珪素顔料（商品名：ミズカシルＰ−527）
70部
スチレン・ブタジエン共重合体ラテツクス（固
形分：48％） 60部
水 150部
上記の組成物を混合し、中間層−２の塗液を得
た。
〔中間層−３〕
焼成クレー（商品名：ANSILEX） 70部
スチレン・ブタジエン共重合体ラテツクス（固
形分：48％） 60部
水 90部
上記の組成物を混合し、中間層−３の塗液を得
た。
実施例 ４
坪量50ｇ／m2の上質紙上に、実施例１の〔中間
層−２の形成〕と同じ組成の中間層を乾燥後の付
着量が10ｇ／m2となるように塗布乾燥した後、そ
の上に実施例２と全く同様にして中間層−１、中
間層−２および感熱記録層を順次設けて感熱記録
紙を得た。
比較例 １
実施例１の〔中間層−１の形成〕および〔中間
層−２の形成〕の代わりに、下記の中間層組成物
を乾燥後の付着量が189ｇ／m2となるように塗布
乾燥した以外は、実施例１と同様にして感熱記録
紙を得た。
〔中間層〕
スチレン−アクリル系共重合体樹脂からなる微
小中空粒子のエマルジヨン（商品名：
VONCOASTPP−1000） 180部
スチレン・ブタジエン共重合体ラテツクス（固
形分：48％） 40部
水 20部
上記の組成物を混合し、中間層用の塗液を得
た。
比較例 ２
実施例１の〔中間層−１の形成〕および〔中間
層−２の形成〕の代わりに、下記の中間層組成物
を乾燥後の付着量が22ｇ／m2となるように塗布乾
燥した以外は、実施例１と同様にして感熱記録紙
を得た。
〔中間層〕
焼成クレー（商品名：ANSILEX） 70部
スチレン・ブタジエン共重合体ラテツクス（固
形分：48％） 60部
水 90部
上記の組成物を混合し、中間層用の塗液を得
た。
かくして得られた６種類の感熱記録紙を、Ｇ
FAX試験機にて発色濃度と印字画素の再現性を
評価し、その結果を第１表に示した。
なお、テスト機は京セラ(株)の８ドツト／mmのサ
ーマルヘツド（発熱体平均抵抗値：207Ω／ドツ
ト）を有し、印字パルス周期6ms、記録線濃度
7.7line／mm、プラテン押付圧力2.9Kg、印字電力
0.745W／ドツトの条件で、印字パルス時間を
0.2msと0.3msの２条件でテストを行つた。
"Industrial Application Field" The present invention relates to a thermal recording medium, and particularly to a thermal recording medium that has excellent reproducibility of printed pixels (dots) in any range from low density to high density. "Prior Art" Conventionally, heat-sensitive recording utilizes a coloring reaction between a coloring agent and a coloring agent that develops color when it comes into contact with the coloring agent, and a colored image is obtained by bringing both coloring materials into contact with each other using heat. The body is well known. Such thermosensitive recording media are relatively inexpensive, the recording equipment is compact, and maintenance is relatively easy, so they are used not only as recording media for facsimile machines and various computers, but also in a wide range of fields. With the diversification of applications, thermal recording materials have excellent reproducibility of printed pixels in all areas from low density to high density, and can produce recorded images of high quality comparable to silver halide photography. The demand for this is increasing. On the other hand, in order to compensate for the decrease in printing energy due to the increase in speed of recording equipment, a layer consisting of a thermal foaming agent and a thermoplastic polymer was provided on the support, and this layer was heated to form a sponge-like undercoat layer. (Japanese Patent Application Laid-open No. 59-171685) has been proposed.
However, these methods not only require a step of foaming the thermal foaming agent, but also introduce new defects due to such a step, and therefore do not necessarily provide satisfactory results. That is, by forming a thermally foamed layer, a relatively high density recorded image can be obtained even with a small amount of energy, but it is difficult to control the degree of foaming, making it difficult to form a uniform foamed layer. . For this reason, a method has been proposed (Japanese Patent Laid-Open No. 59-225987) to improve the smoothness by providing a pigment coat layer on the foam layer, but this leaves fine irregularities on the recording layer, resulting in a high degree of roughness. It has not yet been possible to obtain a heat-sensitive recording material with good print pixel reproducibility. "Problems to be Solved by the Invention" The purpose of the present invention is to provide a heat-sensitive recording material that has excellent reproducibility of printed pixels in all regions from low density to high density, and can obtain recorded images of high quality. This objective is achieved by providing a specific intermediate layer between the support and the heat-sensitive recording layer. "Means for Solving the Problems" The present invention provides a heat-sensitive recording material in which a heat-sensitive recording layer containing a color former and a color former that reacts with the color former to form a color is provided on a support. and the heat-sensitive recording layer, an intermediate layer containing non-expandable micro hollow particles made of a thermoplastic resin and having an outer diameter of 5 μm or less, and an intermediate layer containing an inorganic or organic pigment are provided. It is a heat-sensitive recording material. "Function" As described above, the thermosensitive recording material of the present invention has an outer diameter of 5 μm made of thermoplastic resin between the support and the recording layer.
An intermediate layer containing the following non-expandable micro hollow particles,
It has an important feature in that it is provided with an intermediate layer containing an inorganic or organic pigment. Various substances are known as such non-expandable micro hollow particles, but in the present invention, in particular,
It selectively uses those with a diameter of 5 μm or less,
More preferably 2 μm or less, most preferably 1 μm
It is desirable to use hollow particles with an outer diameter of:
Note that with hollow particles having an outer diameter exceeding 5 μm or hollow particles containing a low boiling point substance such as propane or butane inside, it is not possible to obtain a heat-sensitive recording material with excellent pixel reproducibility, which is the object of the present invention. The specific non-expandable micro hollow particles used in the present invention are made of thermoplastic resin, but if they are deformed by heat during recording, for example, the desired effects of the present invention may be impaired. Therefore, a substance having a glass transition temperature of 50° C. or higher is preferably used. Specifically, polystyrene, poly-α-
In addition to styrenic resins such as methylstyrene and poly-β-methylstyrene, acrylic resins such as polymethyl methacrylate, polyethyl methacrylate, polyisopropyl methacrylate, polyisobutyl methacrylate, polyacrylonitrile, and polymethacrylonitrile, Polyvinyl chloride, polytetrafluoroethylene, polyvinyl alcohol, poly-o-vinylbenzyl alcohol, poly-m-vinylbenzyl alcohol, poly-p-vinylbenzyl alcohol, polyvinyl formal, polyvinyl acetal, polyvinyl propional, polyvinyl butyral, polyvinyl Examples include isobutyral, polyvinyl-tert-butyl ether, polyvinylpyrrolidone, polyvinylcarbazole, cellulose acetate, cellulose triacetate, polycarbonate, and copolymers thereof.
Among these, styrene resins, acrylic resins, and styrene-acrylic copolymer resins are preferred, and in particular, micro hollow particles made of polystyrene or styrene-methyl methacrylate copolymers have appropriate hardness, elasticity and Since it has heat resistance, it is particularly preferably used. Such specific hollow microparticles are generally dispersed in a binder as described below that constitutes the heat-sensitive recording layer to form a coating liquid for the intermediate layer, but emulsion (latex)-based binders in particular have good coating liquid stability. It is more preferably used because it provides an intermediate layer with excellent elasticity and elasticity. The blending ratio of the micro hollow particles is not particularly limited as it is adjusted depending on the outer diameter of the hollow particles used and their wall thickness, but the resin component of the hollow particles is adjusted to the total solid content of the intermediate layer. 5-95 for
It is desirable that the content be in the range of 60 to 85% by weight. In addition, in the coating liquid,
Inorganic or organic pigments can also be added within a range that does not impede the effects of the present invention. There is no particular limitation on the amount of application, and generally 3 to 30
g/m 2 , preferably about 6 to 20 g/m 2 . In the heat-sensitive recording material of the present invention, in addition to the intermediate layer containing the specific hollow microparticles as described above, an intermediate layer containing an inorganic or organic pigment is also provided. Examples of the inorganic or organic pigment include materials added to the heat-sensitive recording layer as described below. Among these, pigments having an oil absorption of about 80 to 200 ml/100 g are preferable, and those having a particle size of 2 μm or less are preferable. These pigments are dispersed in a common binder and, if necessary, pulverized to form a coating liquid for the intermediate layer. The blending ratio of the pigment is adjusted appropriately depending on the type of pigment used, and is not particularly limited, but is 5 to 95% by weight, preferably 60 to 95% by weight based on the total solid content of the intermediate layer. It is desirable to mix it so that it is 85% by weight. There is no particular limitation on the amount of application, but it is generally between 5 and 35%.
g/m 2 , preferably adjusted within a range of about 10 to 25 g/m 2 . The heat-sensitive recording material of the present invention has an important feature in that two different types of intermediate layers as described above are provided between the support and the recording layer, but there are no particular limitations on the layer structure. It's not something you do. In other words, it is sufficient that at least one layer of each of the two types of intermediate layers is provided between the support and the recording layer. This also includes configurations in which each is provided separately. However, from the viewpoint of pixel reproducibility, it is preferable that the layer in contact with the heat-sensitive recording layer is a layer containing an inorganic or organic pigment. Note that when providing a plurality of layers containing inorganic or organic pigments, it is of course possible to change the pigment contained in each layer. In the present invention, there are no particular limitations on the method of forming the intermediate layer on the support, etc.
Apply and dry according to conventionally well-known and commonly used techniques,
can be formed. A heat-sensitive recording layer is coated on the thus obtained intermediate layer and dried to produce the heat-sensitive recording material of the present invention. In the present invention, there are no particular limitations on the combination of the coloring agent and the coloring agent contained in the recording layer, and any combination that causes a coloring reaction when the two come into contact with each other due to heat can be used. Examples include combinations of colorless or light-colored basic dyes and inorganic or organic acidic substances, and combinations of higher fatty acid metal salts such as ferric stearate and phenols such as gallic acid. Furthermore, it is also possible to apply the present invention to various heat-sensitive recording materials that obtain a developed color image (recorded image) by heat, such as a heat-sensitive recording material that combines a diazonium compound, a coupler, and a basic substance. These recording bodies are also included. However, the specific intermediate layer of the present invention provided on the support exhibits an excellent effect particularly in combinations of basic dyes and acidic substances, and is therefore particularly preferably used in such combinations. Various types of colorless to light-colored basic dyes are known, and examples include the following. 3,3-bis(p-dimethylaminophenyl)
-6-dimethylaminophthalide, 3,3-bis(p-dimethylaminophenyl)phthalide, 3-
(p-dimethylaminophenyl)-3-(1,2-
dimethylindol-3-yl)phthalide, 3-
(p-dimethylaminophenyl)-3-(2-methylindol-3-yl)phthalide, 3,3-bis(1,2-dimethylindol-3-yl)-
5-dimethylaminophthalide, 3,3-bis(1,2-dimethylindol-3-yl)-6-
Dimethylaminophthalide, 3,3-bis(9-ethylcarbazol-3-yl)-6-dimethylaminophthalide, 3,3-bis(2-phenylindol-3-yl)-6-dimethylaminophthalide 3-p-dimethylaminophenyl-3-(1
triallylmethane dyes such as -methylpyrrol-3-yl)-6-dimethylaminophthalide, 4,
Diphenylmethane dyes such as 4'-bis-dimethylaminobenzhydryl benzyl ether, N-halophenyl-leucoauramine, N-2,4,5-trichlorophenylleucoauramine, benzoylleucomethylene blue, p-nitrobenzoylleuco Thiazine dyes such as methylene blue, 3
-Methyl-spiro-dinaphthopyran, 3-ethyl-spiro-dinaphthopyran, 3-phenyl-spiro-dinaphthopyran, 3-benzyl-spiro-dinaphthopyran, 3-methyl-naphtho-(6'-methoxybenzo)spiropyran, 3-propyl- Spiro dyes such as spiro-dibenzopyran, lactam dyes such as rhodamine-B anilinolactam, rhodamine (p-nitroanilino) lactam, rhodamine (o-chloroanilino) lactam, 3-dimethylamino-7-methoxyfluoran, 3 -diethylamino-6-methoxyfluorane, 3-diethylamino-7-methoxyfluorane, 3-diethylamino-7-chlorofluorane, 3-diethylamino-6-methyl-7-chlorofluorane, 3-diethylamino-6,7 -dimethylfluorane, 3-(N-ethyl-p-toluidino)-7
-Methylfluorane, 3-diethylamino-7-
N-acetyl-N-methylaminofluorane, 3
-diethylamino-7-N-methylaminofluorane, 3-diethylamino-7-dibenzylaminofluorane, 3-diethylamino-7-N-methyl-N-benzylaminofluorane, 3-diethylamino-7-N-chloroethyl -N-methylaminofluorane, 3-diethylamino-7-N
-diethylaminofluorane, 3-(N-ethyl-p-toluidino)-6-methyl-7-phenylaminofluorane, 3-(N-cyclopentyl-
N-ethylamino)-6-methyl-7-anilinofluorane, 3-(N-ethyl-p-toluidino)
-6-methyl-7-(p-toluidino)fluoran, 3-diethylamino-6-methyl-7-phenylaminofluorane, 3-diethylamino-7
-(2-Carbomethoxy-phenylamino)fluorane, 3-(N-ethyl-N-isoamylamino)-6-methyl-7-phenylaminofluorane, 3-(N-cyclohexyl-N-methylamino)-6 -Methyl-7-phenylaminofluorane, 3-pyrrolidino-6-methyl-7-phenylaminofluorane, 3-piperidino-6-methyl-7-phenylaminofluorane, 3-diethylamino-6-methyl -7-xylidinofluorane, 3-diethylamino-7-(o-chlorophenylamino)fluoran, 3-dibutylamino-
7-(o-chlorophenylamino)fluoran,
3-pyrrolidino-6-methyl-7-p-butylphenylaminofluorane, 3-N-methyl-N-
Tetrahydrofurfurylamino-6-methyl-7
-anilinofluorane, 3-N-ethyl-N-tetrahydrofurfurylamino-6-methyl-7-
Fluoran dyes such as anilinofluorane. Various types of inorganic or organic acidic substances that develop color upon contact with basic dyes are also known, and examples include the following. Inorganic acidic substances such as activated clay, acid clay, attapulgite, bentonite, colloidal silica, aluminum silicate, 4-tert-butylphenol, 4-hydroxydiphenoxide, α-naphthol, β-naphthol, 4-hydroxyacetophenol, 4- tert-octylcatechol, 2,
2'-Dihydroxydiphenol, 2,2'-methylenebis(4-methyl-6-tert-isobutylphenol), 4,4'-isopropylidenebis(2-
tert-butylphenol), 4,4'-sec-butylidene diphenol, 4-phenylphenol,
4,4'-isopropylidene diphenol (bisphenol A), 2,2'-methylenebis(4-chlorophenol), hydroquinone, 4,4'-cyclohexylidene diphenol, benzyl 4-hydroxybenzoate, 4-hydroxy Phenolic compounds such as dimethyl phthalate, hydroquinone monobenzyl ether, novolac type phenolic resin, phenolic polymer, benzoic acid, p-tert-butylbenzoic acid, trichlorobenzoic acid, terephthalic acid, 3-sec-butyl-4-hydroxy benzoic acid,
3-cyclohexyl-4-hydroxybenzoic acid,
3,5-dimethyl-4-hydroxybenzoic acid, salicylic acid, 3-isopropylsalicylic acid, 3-
tert-butylsalicylic acid, 3-benzylsalicylic acid, 3-(α-methylbenzyl)salicylic acid, 3
-chloro-5-(α-methylbenzyl)salicylic acid, 3,5-di-tert-butylsalicylic acid, 3-
Aromatic carboxylic acids such as phenyl-5-(α,α-dimethylbenzyl)salicylic acid, 3,5-di-α-methylbenzylsalicylic acid, and these phenolic compounds, aromatic carboxylic acids such as zinc, magnesium, aluminum, calcium,
Examples include organic acidic substances such as salts with polyvalent metals such as titanium, manganese, tin, and nickel. In the heat-sensitive recording material of the present invention, the ratio of the color former and color former in the recording layer is appropriately selected depending on the type of color former and color former used, and is not particularly limited. For example, when using a basic colorless dye and an acidic substance, generally 1 to 50 parts by weight, preferably 1 part by weight, per 1 part by weight of the basic colorless dye.
~10 parts by weight of acidic substance are used. To prepare a coating solution containing these substances, generally water is used as a dispersion medium and a ball mill, attritor,
A coating liquid is prepared by dispersing the coloring agent and the coloring agent together or separately using a stirring or pulverizing machine such as a sand mill. Such coating liquids usually contain starches, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose, gelatin, casein, gum arabic, polyvinyl alcohol, diisobutylene/maleic anhydride copolymer salt, styrene/maleic anhydride copolymer as binders. salt, ethylene/acrylic acid copolymer salt, styrene/acrylic acid copolymer salt, natural rubber emulsion, styrene/butadiene copolymer emulsion, acrylonitrile/butadiene copolymer emulsion,
Methyl methacrylate/butadiene copolymer emulsion, polychloroprene emulsion, vinyl acetate emulsion, ethylene/vinyl acetate emulsion, etc. are used in an amount of 10 to 70% by weight, preferably 15 to 50% by weight of the total solid content. Furthermore, various auxiliary agents can be added to the coating liquid. for example,
Dispersants such as sodium dioctyl sulfosuccinate, sodium dodecylbenzenesulfonate, sodium lauryl alcohol sulfate, alginates, fatty acid metal salts, ultraviolet absorbers such as benzophenones and triazoles, other antifoaming agents, and fireflies. Examples include light dyes and colored dyes. In addition, lubricants such as zinc stearate, calcium stearate, polyethylene wax, carnauba wax, paraffin wax, and ester wax, calcium carbonate, zinc oxide, aluminum oxide, titanium dioxide, silicon dioxide, aluminum hydroxide, and barium sulfate may also be used as necessary. , zinc sulfate, talc, kaolin, clay, calcined clay, inorganic pigments such as colloidal silica, styrene microballs,
Nylon powder, polyethylene powder, urea/formalin resin filler, organic pigments such as raw starch granules, fatty acid amides such as stearic acid amide, stearic acid methylene bisamide, oleic acid amide, palmitic acid amide, coconut fatty acid amide,
Dibenzyl terephthalate, 1,2-di(3-methylphenoxy)ethane, 1,2-diphenoxyethane, 4,4'-ethylenedioxy-bis-benzoic acid diphenylmethyl ester, 2,2'-methylenebis( 4-methyl-6-tert-butylphenol), 4,4'-butylidenebis(6-tert-butyl-3-methylphenol), 1,1,3-tris(2-methyl-4-hydroxy-5-tert -Butylphenol) Hindered phenols such as butane and various known thermofusible substances can also be used in combination. In addition, when an inorganic or organic pigment is contained in the recording layer, it is preferable to use a pigment with a particle size as small as possible, especially a pigment with an average particle size of 2 μm.
It is desirable to use the following pigments: In the heat-sensitive recording material of the present invention, there are no particular limitations on the method of forming the recording layer, and the recording layer can be formed according to conventionally well-known and commonly used techniques, such as air knife coating, blade coating, etc. It is formed by a method of coating and drying on a support provided with an intermediate layer, which will be described later. Also, the amount of coating liquid applied is not particularly limited, but it is usually 2 to 12 g/dry weight.
m 2 , preferably in the range of about 3 to 10 g/m 2 . In addition, there are no particular limitations on the support, such as high-quality paper, base paper made with a Yankee machine,
Papers such as single-sided glossy base paper, double-sided glossy base paper, cast coated paper, art paper, coated paper, medium quality coated paper, synthetic fiber paper, synthetic resin film, etc. are used as appropriate. In addition, after coating and drying each intermediate layer and recording layer,
Smoothing treatment such as super calendering can also be performed if necessary. Furthermore, it is also possible to provide an overcoat layer on the recording layer for the purpose of protecting the recording layer, and various known techniques in the field of heat-sensitive recording materials can be added, such as providing a backing layer on the support. be. The heat-sensitive recording material of the present invention thus obtained is an extremely excellent recording material that has excellent pixel reproducibility in any region from low density to high density, and is capable of obtaining recorded images of high quality. Although the reason why such an effect is obtained is not clear, by providing an intermediate layer containing specific microscopic hollow particles and an intermediate layer containing a pigment between the support and the heat-sensitive recording layer, the microscopic effect can be achieved. The layer of hollow particles fills in the irregularities on the surface of the lower layer and functions to inhibit the penetration of the coating liquid applied next and to provide elasticity, while the intermediate layer containing the pigment provides a smooth surface. It is presumed that such excellent effects are obtained because the film is formed and functions as a heat insulating layer. The present invention will be explained in more detail with reference to Examples below, but it is of course not limited thereto. Further, unless otherwise specified, parts and % in the examples indicate parts by weight and % by weight, respectively. Example 1 [Formation of intermediate layer-1] Emulsion of micro hollow particles made of polystyrene resin (trade name: VONCOAT Exp.PP-
199, solid content: 50%, outer diameter: 0.2 to 0.3 μm, manufactured by Dainippon Ink and Chemicals Co., Ltd.) 140 parts Styrene-butadiene copolymer latex (solid content: 48%) 40 parts Water 20 parts Above composition The materials were mixed to obtain a coating liquid for intermediate layer-1. The obtained coating liquid was applied to a high-quality paper with a basis weight of 50 g/m 2 and dried so that the amount of the coating after drying was 10 g/m 2 . [Formation of intermediate layer-2] Calcined clay (product name: ANSILEX, average particle size: 0.6 μm, oil absorption: 96 ml/100 g,
(Manufactured by ENGELHARD) 70 parts Styrene-butadiene copolymer latex (solid content: 48%) 60 parts Water 90 parts The above compositions were mixed to obtain a coating liquid for intermediate layer-2. The obtained coating liquid was applied onto the above-obtained intermediate layer-1 so that the coating weight after drying was 12 g/m 2 , dried, and then applied with a supercalender. [Formation of heat-sensitive recording layer] Liquid A preparation 3-(N-cyclohexyl-N-methylamino)
-6-methyl-7-phenylaminofluorane
10 parts dibenzyl terephthalate 20 parts 5% methylcellulose aqueous solution 15 parts water 80 parts This composition was milled in a sand mill until the average particle size was 3 μm.
It was crushed until it was. Preparation of Solution B 30 parts of 4,4'-isopropylidene diphenol 30 parts of 5% aqueous methylcellulose solution 70 parts of water This composition was ground with a sand grinder until the average particle size was 3 μm. Formation of recording layer: 125 parts of liquid A, 130 parts of liquid B, silicon oxide pigment (trade name: Mizukasil P-527, average particle size: 1.8 μm,
Oil absorption: 180ml/100g, manufactured by Mizusawa Chemical Co., Ltd.) 30 copies, 20
% oxidized starch aqueous solution and 55 parts of water were mixed and stirred to prepare a coating liquid. The obtained coating liquid for heat-sensitive recording layer was applied onto the intermediate layer-2 obtained above so that the coating amount after drying was 5.0 g/m 2 , dried, and supercalendered to form heat-sensitive recording paper. I got it. Example 2 A thermosensitive recording paper was obtained in the same manner as in Example 1, except that in [formation of intermediate layer-1], intermediate layer-1 having the following composition was provided. [Intermediate layer-1] Emulsion of micro hollow particles made of styrene-acrylic copolymer resin (product name:
VONCOAT PP-1000, solid content: 45%, outer diameter: 0.3 to 0.4 μm, manufactured by Dainippon Ink and Chemicals Co., Ltd.)
155 parts Styrene-butadiene copolymer latex (solid content: 48%) 40 parts Water 5 parts The above compositions were mixed to obtain a coating liquid for intermediate layer-1. Example 3 [Formation of intermediate layer-2]: Intermediate layer-2 having the following composition was coated and dried so that the amount of adhesion after drying was 6 g/m 2 , and further an intermediate layer having the following composition was formed on top of it. A thermosensitive recording paper was obtained in the same manner as in Example 2, except that -3 was coated and dried so that the amount of adhesion after drying was 6 g/m 2 , and then subjected to super calendering. [Intermediate layer-2] Silicon dioxide pigment (product name: Mizukashiru P-527)
70 parts Styrene-butadiene copolymer latex (solid content: 48%) 60 parts Water 150 parts The above compositions were mixed to obtain a coating liquid for intermediate layer-2. [Intermediate layer-3] Calcined clay (product name: ANSILEX) 70 parts Styrene-butadiene copolymer latex (solid content: 48%) 60 parts Water 90 parts The above composition was mixed and the coating liquid for intermediate layer-3 was prepared. I got it. Example 4 An intermediate layer having the same composition as in Example 1 [Formation of Intermediate Layer- 2 ] was applied and dried on a high-quality paper with a basis weight of 50 g/m 2 so that the amount of adhesion after drying was 10 g/m 2 Thereafter, an intermediate layer-1, an intermediate layer-2, and a heat-sensitive recording layer were sequentially provided thereon in exactly the same manner as in Example 2 to obtain a heat-sensitive recording paper. Comparative Example 1 Instead of [formation of intermediate layer-1] and [formation of intermediate layer-2] in Example 1, the following intermediate layer composition was applied so that the amount of adhesion after drying was 189 g/m 2 A thermosensitive recording paper was obtained in the same manner as in Example 1 except that it was dried. [Intermediate layer] Emulsion of micro hollow particles made of styrene-acrylic copolymer resin (product name:
VONCOASTPP-1000) 180 parts Styrene-butadiene copolymer latex (solid content: 48%) 40 parts Water 20 parts The above compositions were mixed to obtain a coating liquid for the intermediate layer. Comparative Example 2 Instead of [formation of intermediate layer-1] and [formation of intermediate layer-2] in Example 1, the following intermediate layer composition was applied so that the amount of adhesion after drying was 22 g/m 2 A thermosensitive recording paper was obtained in the same manner as in Example 1 except that it was dried. [Intermediate layer] Calcined clay (trade name: ANSILEX) 70 parts Styrene-butadiene copolymer latex (solid content: 48%) 60 parts Water 90 parts The above compositions were mixed to obtain a coating liquid for the intermediate layer. . The six types of thermal recording paper thus obtained were
The color density and print pixel reproducibility were evaluated using a FAX tester, and the results are shown in Table 1. The test machine had an 8 dot/mm thermal head (heating element average resistance value: 207 Ω/dot) manufactured by Kyocera Corporation, a printing pulse period of 6 ms, and a recording line density.
7.7line/mm, platen pressing pressure 2.9Kg, printing power
Printing pulse time under the condition of 0.745W/dot
The test was conducted under two conditions: 0.2ms and 0.3ms.
【表】
「効果」
第１表の結果から明らかなように、本発明の感
熱記録体は低濃度から高濃度のいずれの領域にお
いても印字画素の再現性に優れ、しかもその記録
像は高画質を有する優れた記録体であつた。[Table] "Effects" As is clear from the results in Table 1, the thermal recording material of the present invention has excellent reproducibility of printed pixels in any region from low density to high density, and the recorded image is of high quality. It was an excellent recording medium.
Claims (1)
せしめる呈色剤を含有する感熱記録層を設けた感
熱記録体において、該支持体と感熱記録層との間
に、熱可塑性樹脂からなる外径5μｍ以下の非発
泡性微小中空粒子を含有する中間層、及び、無機
または有機顔料を含有する中間層とを設けたこと
を特徴とする感熱記録体。 ２ 熱可塑性樹脂が、スチレン系樹脂、アクリル
系樹脂またはスチレンーアクリル系共重合体樹脂
である請求の範囲第１項記載の感熱記録体。 ３ 感熱記録層と接する中間層が、無機または有
機顔料を含有する層である請求の範囲第１項記載
の感熱記録体。[Scope of Claims] 1. In a heat-sensitive recording material in which a heat-sensitive recording layer containing a color former and a color former that reacts with the color former to form a color is provided on a support, the space between the support and the heat-sensitive recording layer is 1. A heat-sensitive recording material, comprising: an intermediate layer containing non-expandable micro hollow particles made of a thermoplastic resin and having an outer diameter of 5 μm or less; and an intermediate layer containing an inorganic or organic pigment. 2. The thermosensitive recording material according to claim 1, wherein the thermoplastic resin is a styrene resin, an acrylic resin, or a styrene-acrylic copolymer resin. 3. The heat-sensitive recording material according to claim 1, wherein the intermediate layer in contact with the heat-sensitive recording layer is a layer containing an inorganic or organic pigment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60145198A JPS625886A (en) | 1985-07-01 | 1985-07-01 | Thermal recording material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60145198A JPS625886A (en) | 1985-07-01 | 1985-07-01 | Thermal recording material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS625886A JPS625886A (en) | 1987-01-12 |
| JPH0410875B2 true JPH0410875B2 (en) | 1992-02-26 |
Family
ID=15379680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60145198A Granted JPS625886A (en) | 1985-07-01 | 1985-07-01 | Thermal recording material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS625886A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0511573Y2 (en) * | 1988-02-15 | 1993-03-23 | ||
| JP2755396B2 (en) * | 1988-09-29 | 1998-05-20 | 三菱製紙株式会社 | Thermal recording material |
| JP2758412B2 (en) * | 1988-09-29 | 1998-05-28 | 三菱製紙株式会社 | Thermal recording material |
| JP2988665B2 (en) * | 1988-10-12 | 1999-12-13 | 三菱製紙株式会社 | Transfer sheet for image recording |
| US4929590A (en) * | 1989-03-02 | 1990-05-29 | Ricoh Company, Ltd. | Thermosensitive recording material |
| EP0449537B1 (en) * | 1990-03-27 | 1996-03-06 | The Wiggins Teape Group Limited | Pressure-sensitive copying paper |
| JP3121399B2 (en) * | 1990-11-21 | 2000-12-25 | 株式会社リコー | Thermal recording material |
| JP3156884B2 (en) * | 1992-04-17 | 2001-04-16 | 株式会社リコー | Thermal recording material |
| JP5291466B2 (en) | 2006-09-19 | 2013-09-18 | 三菱製紙株式会社 | Thermal recording material |
| JP7437849B2 (en) * | 2019-06-03 | 2024-02-26 | 大阪シーリング印刷株式会社 | Heat-sensitive recording member and method for producing heat-sensitive recording member |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55164192A (en) * | 1979-06-11 | 1980-12-20 | Ricoh Co Ltd | Heat sensitive recording material |
| JPS5627394A (en) * | 1979-08-13 | 1981-03-17 | Ricoh Co Ltd | Thermorecording material |
| JPS58116193A (en) * | 1981-12-29 | 1983-07-11 | Fujitsu Ltd | Manufacture of heat transfer ink sheet |
| JPS595093A (en) * | 1982-07-01 | 1984-01-11 | Ricoh Co Ltd | Heat-sensitive recording material |
| JPS59105382A (en) * | 1982-12-08 | 1984-06-18 | Nec Corp | Photo detector |
| JPS59225987A (en) * | 1983-06-06 | 1984-12-19 | Ricoh Co Ltd | Thermal recording material |
| JPS6078777A (en) * | 1983-10-06 | 1985-05-04 | Seiko Epson Corp | Thermal transfer ink ribbon |
-
1985
- 1985-07-01 JP JP60145198A patent/JPS625886A/en active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55164192A (en) * | 1979-06-11 | 1980-12-20 | Ricoh Co Ltd | Heat sensitive recording material |
| JPS5627394A (en) * | 1979-08-13 | 1981-03-17 | Ricoh Co Ltd | Thermorecording material |
| JPS58116193A (en) * | 1981-12-29 | 1983-07-11 | Fujitsu Ltd | Manufacture of heat transfer ink sheet |
| JPS595093A (en) * | 1982-07-01 | 1984-01-11 | Ricoh Co Ltd | Heat-sensitive recording material |
| JPS59105382A (en) * | 1982-12-08 | 1984-06-18 | Nec Corp | Photo detector |
| JPS59225987A (en) * | 1983-06-06 | 1984-12-19 | Ricoh Co Ltd | Thermal recording material |
| JPS6078777A (en) * | 1983-10-06 | 1985-05-04 | Seiko Epson Corp | Thermal transfer ink ribbon |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS625886A (en) | 1987-01-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |