JPH0443094A - Magnetic recording sheet - Google Patents
Magnetic recording sheetInfo
- Publication number
- JPH0443094A JPH0443094A JP2151843A JP15184390A JPH0443094A JP H0443094 A JPH0443094 A JP H0443094A JP 2151843 A JP2151843 A JP 2151843A JP 15184390 A JP15184390 A JP 15184390A JP H0443094 A JPH0443094 A JP H0443094A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- magnetic recording
- magnetic
- recording layer
- styrene
- 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
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 101
- 239000004816 latex Substances 0.000 claims abstract description 61
- 229920000126 latex Polymers 0.000 claims abstract description 61
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000011230 binding agent Substances 0.000 claims abstract description 22
- 238000007639 printing Methods 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 133
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 47
- 239000002174 Styrene-butadiene Substances 0.000 claims description 45
- 239000011115 styrene butadiene Substances 0.000 claims description 45
- 239000011241 protective layer Substances 0.000 claims description 7
- 230000005294 ferromagnetic effect Effects 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 27
- 238000000576 coating method Methods 0.000 abstract description 27
- 238000001035 drying Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000006247 magnetic powder Substances 0.000 abstract description 4
- 230000037303 wrinkles Effects 0.000 abstract description 4
- 239000003973 paint Substances 0.000 abstract description 3
- 229920001225 polyester resin Polymers 0.000 abstract description 2
- 239000004645 polyester resin Substances 0.000 abstract description 2
- 238000007788 roughening Methods 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 24
- 230000000052 comparative effect Effects 0.000 description 15
- 239000000049 pigment Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- WKEDVNSFRWHDNR-UHFFFAOYSA-N salicylanilide Chemical compound OC1=CC=CC=C1C(=O)NC1=CC=CC=C1 WKEDVNSFRWHDNR-UHFFFAOYSA-N 0.000 description 8
- 239000005995 Aluminium silicate Substances 0.000 description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 description 7
- 235000012211 aluminium silicate Nutrition 0.000 description 7
- 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 7
- 238000000034 method Methods 0.000 description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 description 7
- -1 aldehyde compounds Chemical class 0.000 description 6
- 239000000975 dye Substances 0.000 description 6
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- HUOKHAMXPNSWBJ-UHFFFAOYSA-N 2'-chloro-6'-(diethylamino)-3'-methylspiro[2-benzofuran-3,9'-xanthene]-1-one Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC(Cl)=C(C)C=C1OC1=CC(N(CC)CC)=CC=C21 HUOKHAMXPNSWBJ-UHFFFAOYSA-N 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 5
- 239000002243 precursor Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- LXCFILQKKLGQFO-UHFFFAOYSA-N methylparaben Chemical compound COC(=O)C1=CC=C(O)C=C1 LXCFILQKKLGQFO-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000008107 starch Substances 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- 150000003457 sulfones Chemical class 0.000 description 4
- 239000000454 talc Substances 0.000 description 4
- 229910052623 talc Inorganic materials 0.000 description 4
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 3
- CRBJBYGJVIBWIY-UHFFFAOYSA-N 2-isopropylphenol Chemical compound CC(C)C1=CC=CC=C1O CRBJBYGJVIBWIY-UHFFFAOYSA-N 0.000 description 3
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 3
- TXFPEBPIARQUIG-UHFFFAOYSA-N 4'-hydroxyacetophenone Chemical compound CC(=O)C1=CC=C(O)C=C1 TXFPEBPIARQUIG-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- YXVFYQXJAXKLAK-UHFFFAOYSA-N biphenyl-4-ol Chemical compound C1=CC(O)=CC=C1C1=CC=CC=C1 YXVFYQXJAXKLAK-UHFFFAOYSA-N 0.000 description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 3
- 239000005018 casein Substances 0.000 description 3
- 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 3
- 235000021240 caseins Nutrition 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- LIZLYZVAYZQVPG-UHFFFAOYSA-N (3-bromo-2-fluorophenyl)methanol Chemical compound OCC1=CC=CC(Br)=C1F LIZLYZVAYZQVPG-UHFFFAOYSA-N 0.000 description 2
- GMOYUTKNPLBTMT-UHFFFAOYSA-N 2-phenylmethoxybenzoic acid Chemical compound OC(=O)C1=CC=CC=C1OCC1=CC=CC=C1 GMOYUTKNPLBTMT-UHFFFAOYSA-N 0.000 description 2
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 241000220317 Rosa Species 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-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
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000004907 flux Effects 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
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- ZSYJMXLJNPEAGP-UHFFFAOYSA-N methyl n-cyanocarbamate Chemical compound COC(=O)NC#N ZSYJMXLJNPEAGP-UHFFFAOYSA-N 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000010680 novolac-type phenolic resin Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 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
- XAAILNNJDMIMON-UHFFFAOYSA-N 2'-anilino-6'-(dibutylamino)-3'-methylspiro[2-benzofuran-3,9'-xanthene]-1-one Chemical compound C=1C(N(CCCC)CCCC)=CC=C(C2(C3=CC=CC=C3C(=O)O2)C2=C3)C=1OC2=CC(C)=C3NC1=CC=CC=C1 XAAILNNJDMIMON-UHFFFAOYSA-N 0.000 description 1
- XKZQKPRCPNGNFR-UHFFFAOYSA-N 2-(3-hydroxyphenyl)phenol Chemical compound OC1=CC=CC(C=2C(=CC=CC=2)O)=C1 XKZQKPRCPNGNFR-UHFFFAOYSA-N 0.000 description 1
- DSUPUOGOCIFZBG-UHFFFAOYSA-N 2-(phenylcarbamoyl)benzoic acid Chemical compound OC(=O)C1=CC=CC=C1C(=O)NC1=CC=CC=C1 DSUPUOGOCIFZBG-UHFFFAOYSA-N 0.000 description 1
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 1
- WJQOZHYUIDYNHM-UHFFFAOYSA-N 2-tert-Butylphenol Chemical compound CC(C)(C)C1=CC=CC=C1O WJQOZHYUIDYNHM-UHFFFAOYSA-N 0.000 description 1
- IKEHOXWJQXIQAG-UHFFFAOYSA-N 2-tert-butyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C(C)(C)C)=C1 IKEHOXWJQXIQAG-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- WXNZTHHGJRFXKQ-UHFFFAOYSA-N 4-chlorophenol Chemical compound OC1=CC=C(Cl)C=C1 WXNZTHHGJRFXKQ-UHFFFAOYSA-N 0.000 description 1
- 229940073735 4-hydroxy acetophenone Drugs 0.000 description 1
- SCOPDLDXQYWODG-UHFFFAOYSA-N 5-tert-butyl-2-hydroxy-3-methylbenzoic acid Chemical compound CC1=CC(C(C)(C)C)=CC(C(O)=O)=C1O SCOPDLDXQYWODG-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- ZCTQGTTXIYCGGC-UHFFFAOYSA-N Benzyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OCC1=CC=CC=C1 ZCTQGTTXIYCGGC-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Chemical class 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000001263 FEMA 3042 Substances 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
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- 241000978776 Senegalia senegal Species 0.000 description 1
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- 239000000205 acacia gum Substances 0.000 description 1
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- 229920003180 amino resin Chemical class 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- IMHDGJOMLMDPJN-UHFFFAOYSA-N biphenyl-2,2'-diol Chemical group OC1=CC=CC=C1C1=CC=CC=C1O IMHDGJOMLMDPJN-UHFFFAOYSA-N 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
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- 235000015115 caffè latte Nutrition 0.000 description 1
- 235000010216 calcium carbonate Nutrition 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
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- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000006103 coloring component Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 239000012954 diazonium Substances 0.000 description 1
- 150000001989 diazonium salts Chemical class 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 229960000878 docusate sodium Drugs 0.000 description 1
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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 1
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- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 239000001023 inorganic pigment Substances 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
- 239000012948 isocyanate Substances 0.000 description 1
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- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 235000010270 methyl p-hydroxybenzoate Nutrition 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
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- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
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- 239000001294 propane Substances 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
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- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical compound [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 description 1
- 229940033123 tannic acid Drugs 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 239000010457 zeolite 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
- 150000003755 zirconium compounds Chemical class 0.000 description 1
Landscapes
- Credit Cards Or The Like (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
（Ａ）産業上の利用分野
本発明は乗車券、回数券、定期券、プリペイドカード等
に有用な磁気記録シートに関し、さらに詳しくは製造工
程上の問題点が無く、寸法安定性に優れ、磁気特性、可
視情報印字特性の優れた磁気記録シートに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention relates to a magnetic recording sheet useful for train tickets, coupon tickets, commuter passes, prepaid cards, etc., and more specifically, it is free from problems in the manufacturing process, This invention relates to a magnetic recording sheet with excellent dimensional stability, magnetic properties, and visible information printing properties.
（Ｂ）従来の技術
従来、磁気記録シートの磁気記録面は磁性塗料の色調が
茶褐色、暗黒色等の色調を呈している為、必要な可視情
報記録は磁気記録面の反対側に感熱記録層、熱転写受理
層、インキジェット受理層、印刷インキ受理層、ドツト
プリンター受理層、静電記録受理層、電子写真受理層、
等を設けて行なわれている。又、紙、不織布等の繊維質
基体に直接磁気記録層を設ける場合、基体の表面の凹凸
が大きい為、磁気記録層の厚みむらが発生し、磁気特性
、特に出力の変動が大きくドロップアウトの原因となる
。その為、及び寸法安定性向上も含め基体の表面を平坦
にする層を磁気記録層の下に設ける方法がとられている
（特開昭５８−３５７３０、実開昭６４−５０９７４）
。(B) Conventional technology Conventionally, since the magnetic paint on the magnetic recording surface of a magnetic recording sheet exhibits a brownish-brown, dark black, etc. color tone, the necessary visible information recording was performed on a heat-sensitive recording layer on the opposite side of the magnetic recording surface. , thermal transfer receiving layer, ink jet receiving layer, printing ink receiving layer, dot printer receiving layer, electrostatic recording receiving layer, electrophotographic receiving layer,
etc. are being established. In addition, when a magnetic recording layer is provided directly on a fibrous substrate such as paper or nonwoven fabric, the unevenness of the surface of the substrate is large, resulting in uneven thickness of the magnetic recording layer, resulting in large fluctuations in magnetic properties, especially output, and dropouts. Cause. For this reason, a method has been adopted in which a layer is provided below the magnetic recording layer to flatten the surface of the substrate, including improving dimensional stability (Japanese Unexamined Patent Publication No. 58-35730, Utility Model Application No. 64-50974).
.
しかしながら、そのような繊維質基体を平坦にする層を
設け、更に磁気記録層、保護層、可視情報記録層、等を
設ける場合には、後工程の塗布層の乾燥時はど基体に含
有する水分が蒸発する際に発生する内部圧が高くなり、
乾燥しわが発生しやすく、塗布面も荒れてくる。However, when a layer for flattening such a fibrous substrate is provided, and further a magnetic recording layer, a protective layer, a visible information recording layer, etc. The internal pressure generated when water evaporates increases,
Dry wrinkles tend to occur, and the applied surface becomes rough.
（Ｃ）発明が解決しようとする課題
本発明は磁気記録シートの製造工程上のトラブルをおさ
え、寸法安定性に優れ、塗布層の均一化、塗布面の平坦
化により、磁気特性、可視情報記録特性の改良を行なう
ものである。(C) Problems to be Solved by the Invention The present invention suppresses troubles in the manufacturing process of magnetic recording sheets, has excellent dimensional stability, makes the coating layer uniform, and flattens the coating surface, thereby improving magnetic properties and recording visible information. This is to improve the characteristics.
（Ｄ）課題を解決するための手段
本発明者らはこれらの問題点を解決すべく鋭意検討した
結果、繊維質基体の少なくとも片面にゲル含有量５〜７
５％のスチレン・ブタジエン系ラテックス層を、更に該
ラテックス層上に磁気記録層を設け、他面に合成バイン
ダー及び／又は天然バインダーを含有する可視情報記録
層を設け、場合により各記録層上に保護層を設ける事に
より上記の問題点を解決しうる事を見い出し、本発明に
到った。好ましくは磁気記録層に使用する水性結合剤と
してゲル含有量が５〜７５％のスチレン・ブタジエン系
ラテックスが選べる。(D) Means for Solving the Problems As a result of intensive studies to solve these problems, the inventors found that at least one side of the fibrous substrate has a gel content of 5 to 7.
A 5% styrene-butadiene latex layer, a magnetic recording layer on the latex layer, and a visible information recording layer containing a synthetic binder and/or a natural binder on the other side, optionally on each recording layer. It was discovered that the above problems could be solved by providing a protective layer, and the present invention was developed. Preferably, a styrene-butadiene latex having a gel content of 5 to 75% can be selected as the aqueous binder used in the magnetic recording layer.
スチレン・ブタジエン系ラテックスのゲル含有量が７５
％より多いと乾燥じわ、塗布面の荒れが目立ち、５％よ
り少ないと塗層強度が弱く、製造工程上及び使用上のト
ラブルが発生しやすくなる。Gel content of styrene-butadiene latex is 75
If it is more than 5%, drying wrinkles and roughness of the coated surface will be noticeable, and if it is less than 5%, the strength of the coating will be weak and troubles will easily occur in the manufacturing process and in use.
尚、本発明のスチレン・ブタジエン系ラテックス層を繊
維質基体の両面に設けると可視情報記録層の特性向上に
加え、記録シートのカール性も大幅に改良され好ましい
。It is preferable to provide the styrene-butadiene latex layer of the present invention on both sides of the fibrous substrate, since not only the properties of the visible information recording layer are improved, but also the curling properties of the recording sheet are significantly improved.
本発明のスチレン・ブタジエン系ラテ・ソクス層に白色
顔料、例えば炭酸カルシウム、カオリン、タルク、焼成
カオリン、シリカ、尿素樹脂、ポリスチレン樹脂等を添
加する事もできる。この場合の添加量は、重量で３０％
以下が好ましい。ただし可視情報記録層が感熱記録層の
場合、感熱記録層の下のスチレン・ブタジエン系ラテッ
クス層を設ける場合には感熱特性との関係で高吸油性の
顔料をラテックス層の７０〜８０％程度まで入れる場合
も有る。その他、澱粉、セルロース誘導体、アクリル系
樹脂等の保水剤、無機過酸化物、有機過酸化物、フェノ
ール樹脂、アミノ樹脂、アルデヒド化合物、エポキシ化
合物、ホウ酸、リン化合物、ジルコニウム化合物、シラ
ン化合物等の架橋剤等が適時添加出来る。スチレン・ブ
タジエン系ラテックス層の厚さは片面で３〜１５μｍが
好ましい。A white pigment such as calcium carbonate, kaolin, talc, calcined kaolin, silica, urea resin, polystyrene resin, etc. can also be added to the styrene-butadiene latte sox layer of the present invention. In this case, the amount added is 30% by weight.
The following are preferred. However, if the visible information recording layer is a heat-sensitive recording layer and a styrene-butadiene latex layer is provided below the heat-sensitive recording layer, the amount of highly oil-absorbing pigment in the latex layer may be 70 to 80% due to the heat-sensitive properties. There are cases where it can be included. In addition, water retention agents such as starch, cellulose derivatives, acrylic resins, inorganic peroxides, organic peroxides, phenolic resins, amino resins, aldehyde compounds, epoxy compounds, boric acid, phosphorus compounds, zirconium compounds, silane compounds, etc. Crosslinking agents, etc. can be added at appropriate times. The thickness of the styrene-butadiene latex layer on one side is preferably 3 to 15 μm.
本発明の磁気記録層は、磁性粉をポリエステル樹脂、塩
化ビニル樹脂、ポリウレタン樹脂、塩化ビニル・酢酸ビ
ニル共重合体樹脂、スチレン・ブタジエン共重合体樹脂
、ポリアクリル酸エステル樹脂、エポキシ樹脂等の結合
剤中に均一分散し、目的に応じて可塑剤、ゴム、分散剤
、帯電防止剤、顔料等が添加され、得られた塗料をスチ
レン・ブタジエン系ラテックス層上に塗布又は印刷する
ことにより形成される。The magnetic recording layer of the present invention combines magnetic powder with polyester resin, vinyl chloride resin, polyurethane resin, vinyl chloride/vinyl acetate copolymer resin, styrene/butadiene copolymer resin, polyacrylate resin, epoxy resin, etc. Plasticizers, rubber, dispersants, antistatic agents, pigments, etc. are added depending on the purpose, and the resulting paint is coated or printed on a styrene-butadiene latex layer. Ru.
好ましくはゲル含有量が５〜７５％の結合剤が使用され
る。Preferably binders with a gel content of 5 to 75% are used.
磁性粉としては、７ Ｆ ｅ２０３ 、Ｆ ｅ：、０
４．７−Ｆｅ２Ｏ２とＦｅ２Ｏ４の混晶、ＣＯ含有γＦ
ｅ２Ｏ３、ＣＯ含有Ｆｅ２Ｏ４、Ｂａフェライト、Ｓｒ
フェライト等が使用される。磁気記録情報が通常の永久
磁石により消去されるトラブルを防止するためには、保
磁力が１５００〜５０００エルステツドのＢａフェライ
ト、Ｓｒフェライトなどが利用される。磁気記録層上に
更に、ニトロセルロース、ポリウレタン樹脂、ポリビニ
ルアルコール等の保護層を塗布又は印刷する事が有るが
ゲル含有量が５〜７５％の結合剤が好ましい。As magnetic powder, 7 Fe203, Fe:, 0
4.7-Mixed crystal of Fe2O2 and Fe2O4, CO-containing γF
e2O3, CO-containing Fe2O4, Ba ferrite, Sr
Ferrite etc. are used. In order to prevent the trouble of magnetically recorded information being erased by ordinary permanent magnets, Ba ferrite, Sr ferrite, etc. having a coercive force of 1500 to 5000 oersteds are used. A protective layer such as nitrocellulose, polyurethane resin, or polyvinyl alcohol may be further coated or printed on the magnetic recording layer, but a binder having a gel content of 5 to 75% is preferred.
本発明の可視情報記録層としては、感熱記録層、熱転写
受理層、インキジェット受理層、印刷インキ受理層、ド
ツトプリンター受理層、静電記録受理層、電子写真受理
層、等が挙げられる。Examples of the visible information recording layer of the present invention include a thermal recording layer, a thermal transfer receiving layer, an inkjet receiving layer, a printing ink receiving layer, a dot printer receiving layer, an electrostatic recording receiving layer, an electrophotographic receiving layer, and the like.
その中で特に現在主流を占めているのが、感熱記録層、
熱転写受理層を設けるものであり、その他、インキジェ
ット受理層、印刷インキ受理層を設ける場合が有る。Among them, the heat-sensitive recording layer is currently the most popular.
A thermal transfer receiving layer is provided, and an inkjet receiving layer and a printing ink receiving layer may also be provided.
感熱記録層は無色ないし淡色の染料前駆体と酸性物質を
発色成分として含有し、熱により発色するものである。The heat-sensitive recording layer contains a colorless or light-colored dye precursor and an acidic substance as coloring components, and is colored by heat.
染料前駆体としては、
（１）クリスタルバイオレットラクトン（２）３−イン
ドリノ−３−ｐ−ジメチルアミノフェニル−６−シメチ
ルアミノフタリド（３）３−ジエチルアミノ−７−クロ
ロフルオラン
（４）３−ジエチルアミノ−７−シクロヘキシルアミノ
フルオラン
（５）３−ジエチルアミノ−５−メチル−７−ｔブチル
フルオラン
（６）３−ジエチルアミノ−６−メチル−７−アニリノ
フルオラン
（７）３−ジエチルアミノ−６−メチル−７−ｐ−ブチ
ルアニリノフルオラン
（８）２−（Ｎ−フェニル−Ｎ−エチル）アミノフルオ
ラン
（９）３−ジエチルアミノ−７−ジベジルアミノフルオ
ラン
（１０）３−シクロへキシルアミノ−６−クロロフルオ
ラン
（１１）３−ジエチルアミノ−６−メチル−７−キシリ
ジノフルオラン
（１２）２−アニリノ−３−メチル−６−（Ｎ−エチル
−ｐ−トルイジノ）フルオラン
（１３）３−ピロリジノ−６−メチル−７−アニリノフ
ルオラン
（１４）３−ピロリジノ−７−シクロヘキシルアミノフ
ルオラン
（１５）３−ピペリジノ−６−メチル−７−トルイジノ
フルオラン
（１６）３−ピペリジノ−６−メチル−７−アニリノフ
ルオラン
（１７）３− （Ｎ−メチルシクロへキシルアミノ）−
６−メチル−７−アニリノフルオラン（１８）３−ジエ
チルアミノ−７−（ｍ−）リフルオロメチルアニリノ）
フルオラン
（１９）３−ジエチルアミノ−６−メチル−７−クロロ
フルオラン
（２０）３−ジブチルアミノ−６−メチル−７アニリノ
フルオラン
次に感熱記録層に用いられる酸性物質の代表例を示す。As dye precursors, (1) crystal violet lactone (2) 3-indolino-3-p-dimethylaminophenyl-6-dimethylaminophthalide (3) 3-diethylamino-7-chlorofluorane (4) 3 -diethylamino-7-cyclohexylaminofluorane (5) 3-diethylamino-5-methyl-7-t-butylfluorane (6) 3-diethylamino-6-methyl-7-anilinofluorane (7) 3-diethylamino- 6-Methyl-7-p-butylanilinofluorane (8) 2-(N-phenyl-N-ethyl)aminofluorane (9) 3-diethylamino-7-dibedylaminofluorane (10) 3-cyclo Hexylamino-6-chlorofluorane (11) 3-diethylamino-6-methyl-7-xylidinofluorane (12) 2-anilino-3-methyl-6-(N-ethyl-p-toluidino)fluorane (13 ) 3-pyrrolidino-6-methyl-7-anilinofluorane (14) 3-pyrrolidino-7-cyclohexylaminofluorane (15) 3-piperidino-6-methyl-7-toluidinofluorane (16) 3 -piperidino-6-methyl-7-anilinofluorane (17) 3- (N-methylcyclohexylamino)-
6-Methyl-7-anilinofluorane (18) 3-diethylamino-7-(m-)lifluoromethylanilino)
Fluoran (19) 3-diethylamino-6-methyl-7-chlorofluoran (20) 3-dibutylamino-6-methyl-7anilinofluoran Next, typical examples of acidic substances used in the heat-sensitive recording layer will be shown.
（１）４．４’ −イソプロピリデンジフェノール（
２）４．４’ −イソプロピリデンビス（２−クロル
フェノール）
（３）４．４’ −イソプロピリデンビス（２−ター
シャリ−ブチルフェノール）
（４）４．４’ −セカンダリ−ブチリデンジフェノ
ール
（５） ４． ４’ −（１−メチル−ノルマル−ヘキ
シリデン）ジフェノール
（６）４−フェニルフェノール
（７）４−ヒドロキシジフェノキシド
（８）メチル−４−ヒドロキシベンゾエート（９）フェ
ニル−４−ヒドロキシベンゾエート（１０）４−ヒドロ
キシアセトフェノン（１１）サリチル酸アニリド
（１２）４．４’ −シクロへキシリデンジフェノー
ル
（１３）４．４’ −シクロへキシリデンビス（２−
メチルフェノール）
（１４）４．４’ −ベンジリデンジフェノール（１
５）４．４’ −チオビス（６−ターシャリ−ブチル
−３−メチルフェノール）
（１６）４．４’ −イソプロピリデンビス（２−メ
チルフェノール）
（１７）４．４’ −エチレンビス（２−メチルフェ
ノール）
（１８）４．４’ −シクロへキシリデンビス（２−
イソプロピルフェノール）
（１９）２．２’ −ジヒドロキシジフェニル（２０
） ２． ２’ −メチレンビス（４−クロロフェノ
ール
（２１）２．２’ −メチレンビス（４−メチル−６
−ｔ−ブチルフェノール）
（２２）１．１’ −ビス（４−ヒドロキシフェノー
ル）−シクロヘキサン
（２３）２．２’ −ビス（４′ −ヒドロキシフェ
ニル）プロパン
（２４）ノボラック型フェノール樹脂
（２５）ハロゲン化ノボラック型フェノール樹脂（２６
）α−ナフトール
（２７）β−ナフトール
（２８）３．５−ジ−ｔ−ブチルサリチル酸（２９）３
．５−ジ−α−メチルベンジルサリチル酸
（３０）３−メチル−５−ｔ−ブチルサリチル酸（３１
）フタル酸モノアニリドバラエトキシ安息香酸
（３２）ビス（４−ヒドロキシフェニル）スルホン
（３３）４−ヒドロキシ−４′ −イソプロピルオキシ
ジフェニルスルホン
（３４）ジー（３−アリル−４−ヒドロキシフェニル）
スルホン
（３５）バラベンジルオキシ安息香酸
（３６）バラヒドロキシ安息香酸ベンジルエステル
本発明の感熱記録層塗液は、次の方法によって得ること
ができる。即ち、酸性物質、該酸性物質で発色する染料
前駆体を別々にあるいは同時に粉砕機で微細粒子状に粉
砕分散し、結合剤、顔料等と混合し、必要に応じて各種
添加剤を加えることにより塗液を調整する。(1) 4.4'-isopropylidenediphenol (
2) 4.4'-isopropylidene bis(2-chlorophenol) (3) 4.4'-isopropylidene bis(2-tert-butylphenol) (4) 4.4'-secondary-butylidene diphenol (5) 4. 4'-(1-Methyl-n-hexylidene)diphenol (6) 4-phenylphenol (7) 4-hydroxydiphenoxide (8) Methyl-4-hydroxybenzoate (9) Phenyl-4-hydroxybenzoate (10) 4-Hydroxyacetophenone (11) Salicylic acid anilide (12) 4.4'-Cyclohexylidene diphenol (13) 4.4'-Cyclohexylidene bis(2-
methylphenol) (14) 4.4'-benzylidene diphenol (1
5) 4.4'-thiobis(6-tert-butyl-3-methylphenol) (16) 4.4'-isopropylidenebis(2-methylphenol) (17) 4.4'-ethylenebis(2- methylphenol) (18) 4.4'-cyclohexylidene bis(2-
isopropylphenol) (19) 2,2'-dihydroxydiphenyl (20
) 2. 2'-methylenebis(4-chlorophenol (21)2.2'-methylenebis(4-methyl-6
-t-butylphenol) (22) 1.1'-bis(4-hydroxyphenol)-cyclohexane (23) 2.2'-bis(4'-hydroxyphenyl)propane (24) Novolac type phenolic resin (25) Halogen chemical novolac type phenolic resin (26
) α-naphthol (27) β-naphthol (28) 3.5-di-t-butylsalicylic acid (29) 3
．． 5-di-α-methylbenzylsalicylic acid (30) 3-methyl-5-t-butylsalicylic acid (31
) Phthalic acid monoanilide Varethoxybenzoic acid (32) Bis(4-hydroxyphenyl) sulfone (33) 4-hydroxy-4'-isopropyloxydiphenyl sulfone (34) Di(3-allyl-4-hydroxyphenyl)
Sulfone (35) Rose benzyloxybenzoic acid (36) Rose hydroxybenzoic acid benzyl ester The heat-sensitive recording layer coating liquid of the present invention can be obtained by the following method. That is, by separately or simultaneously grinding and dispersing an acidic substance and a dye precursor that develops color with the acidic substance into fine particles using a grinder, mixing with a binder, pigment, etc., and adding various additives as necessary. Adjust the coating liquid.
結合剤としては、例えば、澱粉類、ヒドロキシエチルセ
ルロース、メチレンセルロース、ポリビニルアルコール
、スチレン−無水マレイン酸共重合体、スチレン−ブタ
ジェン共重合体、ポリアクリルアミド、カルボキシメチ
ルセルロース、アラビアゴム、カゼイン等の水溶性結合
剤、スチレン−ブタジェンラテックス等ラテックス類を
用いることができる。Examples of the binder include water-soluble bonds such as starch, hydroxyethyl cellulose, methylene cellulose, polyvinyl alcohol, styrene-maleic anhydride copolymer, styrene-butadiene copolymer, polyacrylamide, carboxymethyl cellulose, gum arabic, and casein. Latexes such as styrene-butadiene latex and styrene-butadiene latex can be used.
顔料としては、ケイソウ土、タルク、カオリン、焼成カ
オリン、炭酸カルシウム、炭酸マグネシウム、酸化チタ
ン、酸化亜鉛、酸化ケイ素、水酸化アルミニウム、尿素
−ホルマリン樹脂等が挙げられる。Examples of the pigment include diatomaceous earth, talc, kaolin, calcined kaolin, calcium carbonate, magnesium carbonate, titanium oxide, zinc oxide, silicon oxide, aluminum hydroxide, urea-formalin resin, and the like.
その他、ステアリン酸亜鉛、ステアリン酸カルシウム等
の高級脂肪酸金属塩、パラフィン、酸化パラフィン、ポ
リエチレン、酸化ポリエチレン等のワックス類、ジオク
チルスルホコハク酸塩等の湿潤剤、ベンゾフェノン系、
ベンゾトリアゾール系などの紫外線吸収剤、さらに界面
活性剤、蛍光染料等が用いられる。本発明の感熱記録層
に保護層を設ける場合は、染料前駆体との発色を防ぐ意
味で水性樹脂が好ましい。例えばポリビニルアルコール
、ポリビニルピロリドン、ポリアクリルアマイド、カル
ボキシメチルセルロース、ヒト０キシエチルセルロース
等及びそれらの変性物が挙げられる。In addition, higher fatty acid metal salts such as zinc stearate and calcium stearate, waxes such as paraffin, paraffin oxide, polyethylene and polyethylene oxide, wetting agents such as dioctyl sulfosuccinate, benzophenone,
Ultraviolet absorbers such as benzotriazole type, surfactants, fluorescent dyes, etc. are used. When a protective layer is provided in the heat-sensitive recording layer of the present invention, an aqueous resin is preferred in order to prevent color development with the dye precursor. Examples include polyvinyl alcohol, polyvinylpyrrolidone, polyacrylamide, carboxymethylcellulose, human oxyethylcellulose, and modified products thereof.
本発明に用いられる支持体としては紙、不織布、織布等
が用いられるが、合成紙、プラスチックフィルム、金属
箔等を単独、あるいは組み合わせシートを用いる事も出
来る。As the support used in the present invention, paper, nonwoven fabric, woven fabric, etc. are used, but synthetic paper, plastic film, metal foil, etc. can also be used alone or in combination.
その他の感熱記録層として、特開昭５８−３８７３３号
、特開昭５８−５４０８５号、特開昭５８−１０４９５
９号に開示のイミノ化合物とイソシアネート化合物の熱
的反応で安定な化合物を形成する為、画像の耐消色性に
優れたシステムにも本発明が利用出来る。又、ステアリ
ン酸第２鉄とタンニン酸又は没食子酸等との加熱反応を
利用するキレート型システム及び、ジアゾニウム塩とカ
プラーの反応を利用するジアゾ感熱紙にも本発明が用い
られる。使用する顔料、バインダー等は染料前駆体と酸
性物質を利用した感熱記録層と同様のものが使用出来る
。Other heat-sensitive recording layers include JP-A-58-38733, JP-A-58-54085, and JP-A-58-10495.
Since a stable compound is formed through a thermal reaction between an imino compound and an isocyanate compound as disclosed in No. 9, the present invention can also be used in a system with excellent image fade resistance. The present invention can also be used in chelate-type systems that utilize a heating reaction between ferric stearate and tannic acid or gallic acid, and diazo thermal paper that utilizes a reaction between a diazonium salt and a coupler. The pigments, binders, etc. used can be the same as those used in the heat-sensitive recording layer using dye precursors and acidic substances.
熱転写受理層は熱転写インキの転写性に優れ、しかも熱
転写インキを層内部に吸収しやすい特性が要求される。The thermal transfer receiving layer is required to have excellent transferability for thermal transfer ink and to have characteristics that allow the thermal transfer ink to be easily absorbed into the layer.
熱転写受理層の主成分は顔料及びノ（インダーである。The main components of the thermal transfer receiving layer are pigments and inders.
顔料としては、一般のコート紙に使用される顔料が使用
出来るが、好ましくは３０〜２００ｍ１７１００ｇの吸
油量（Ｊ Ｉ Ｓ−に５１０１）顔料が使用出来る。例
えば天然又は合成のゼオライト、カオリン、タルク、ろ
う石、ケイソウ土、合成シリカ、クレー、焼成カオリン
、炭酸カルシウム、ケイ酸マグネシウム、酸化チタン、
炭酸バリウム、水酸化アルミニウム、等の無機顔料、尿
素−ホルマリンフィラー等の有機顔料が挙げられる。As the pigment, pigments used for general coated paper can be used, but preferably pigments with an oil absorption of 30 to 200 ml and 17,100 g (JIS-5101) can be used. For example, natural or synthetic zeolite, kaolin, talc, waxite, diatomaceous earth, synthetic silica, clay, calcined kaolin, calcium carbonate, magnesium silicate, titanium oxide,
Examples include inorganic pigments such as barium carbonate and aluminum hydroxide, and organic pigments such as urea-formalin filler.
バインダーとしては、スチレン・ブタジエン系ラテック
ス、エチレン・酢酸ビニルラテックス、アクリル系ラテ
ックス、ヒドロキシエチルセルロース、カルボキシメチ
ルセルロース、カゼイン、ポリビニルアルコール、澱粉
等が挙げられる。Examples of the binder include styrene/butadiene latex, ethylene/vinyl acetate latex, acrylic latex, hydroxyethyl cellulose, carboxymethyl cellulose, casein, polyvinyl alcohol, starch, and the like.
他の添加剤としては、顔料分散剤、消泡剤、滑剤、染料
、蛍光増白剤、紫外線吸収剤、耐水化剤、防腐剤等が適
宜使用される。As other additives, pigment dispersants, antifoaming agents, lubricants, dyes, optical brighteners, ultraviolet absorbers, waterproofing agents, preservatives, and the like are used as appropriate.
熱転写受理層は塗布量が３〜３０ｇ／ｒＩｉとするのが
好ましい。３ ｇ／ｒｄ未満であるとインキ転写性が悪
＜、３０ｇ／ｍ以上になるとコスト高になる他、水又は
溶剤の蒸発量も増える為、塗布乾燥作業性が劣る。The coating amount of the thermal transfer receiving layer is preferably 3 to 30 g/rIi. If it is less than 3 g/m, the ink transfer property will be poor; if it is more than 30 g/m, the cost will increase and the amount of water or solvent evaporated will also increase, resulting in poor coating and drying workability.
インキジェット記録方式はインキの微小液滴を種々の作
動原理により飛翔させて、紙等の受理面に付着させ記録
を行なうものであるが、ドツト径やドツト形状、印字濃
度や色調の再現性の向上の為に、紙等の支持体の表面に
インキジェット受理層を設ける事が行なわれている。イ
ンキジェット受理層は顔料とバインダーを主成分として
含む。The inkjet recording method uses various operating principles to eject minute droplets of ink and make them adhere to a receiving surface such as paper to record. To improve this, an inkjet receiving layer is provided on the surface of a support such as paper. The inkjet receiving layer contains a pigment and a binder as main components.
顔料、バインダーとしては、熱転写受理層の場合と同様
な材料が使用出来る。インキジェット受理層は塗布量が
２〜３０ｇ／ｍとなるのが好ましい。As the pigment and binder, the same materials as in the case of the thermal transfer receiving layer can be used. The coating weight of the inkjet receiving layer is preferably 2 to 30 g/m.
２ ｇ／ｒｆ！以下であるとインキ受理性、ドツト再現
性が悪くなり、３０ｇ／ｄ以上であると、コスト高にな
る他、塗布作業性、乾燥作業性が劣るようになる。2g/rf! If it is less than 30 g/d, the ink receptivity and dot reproducibility will be poor, and if it is more than 30 g/d, the cost will be high and the coating workability and drying workability will be poor.
印刷インキ受理層は、従来一般のアート紙、コート紙に
用いられている、顔料、バインダー、分散剤、消泡剤、
等が用いられるが、具体的には、顔料として、カオリン
、クレー、タルク、炭酸カルシウム、シリカ、等が用い
られ、バインダーとしては、スチレン・ブタジエン系ラ
テックス、アクリル系ラテックス、ポリビニルアルコー
ル系樹脂、等の合成バインダー、及び澱粉、カゼイン、
セルロース誘導体等の天然バインダーが用いられる。
塗布量は１〜２０ｇ／ｒｒｌ程度で用いられているが、
一般的には、３〜１３ｇ／ｒ１ｉが塗布されている。The printing ink receiving layer contains pigments, binders, dispersants, antifoaming agents, etc., which are conventionally used in general art paper and coated paper.
Specifically, pigments such as kaolin, clay, talc, calcium carbonate, silica, etc. are used, and binders include styrene-butadiene latex, acrylic latex, polyvinyl alcohol resin, etc. synthetic binders, and starch, casein,
Natural binders such as cellulose derivatives are used.
The coating amount is about 1 to 20 g/rrl, but
Generally, 3 to 13 g/r1i is applied.
本発明のスチレン・ブタジエン系ラテックス層、磁気記
録層、保護層、及び感熱記録層等の可視情報記録層の塗
布に用いられる装置としては、エアーナイフコーター、
ロールコータ−、ロッドコーター、カーテンコーター、
ブレードコーター、ダイコーター等が用いられ、特にス
チレン・ブタジエン系ラテックス層の場合は紙の抄紙工
程で用いられるサイズプレス装置、ゲートロール装置も
用いられる。又、オフセット、シルクスクリーンなどの
印刷法も用いられる。The apparatus used for coating the visible information recording layer such as the styrene-butadiene latex layer, magnetic recording layer, protective layer, and heat-sensitive recording layer of the present invention includes an air knife coater,
Roll coater, rod coater, curtain coater,
A blade coater, a die coater, etc. are used, and especially in the case of a styrene-butadiene latex layer, a size press device and a gate roll device used in the paper making process are also used. In addition, printing methods such as offset and silk screen are also used.
更に塗布したものの表面平滑性を改良するために、マシ
ンカレンダー、スーパーカレンダー、グロスカレンダー
、ブラッシング等が利用出来る。Furthermore, in order to improve the surface smoothness of the coated material, machine calender, super calender, gloss calender, brushing, etc. can be used.
尚、本発明のゲル含有量の測定には以下の方法を用いた
。The following method was used to measure the gel content of the present invention.
即ち、室温乾燥にてラテックスフィルムを作成し、その
ラテックスフィルムを約２００倍のベンゼンに入れ、４
８時間放置、溶解した後、濾紙（＃２）で濾過後、濾液
を７０℃で乾燥し、ラテックスフィルムのゾル量より算
出した。That is, a latex film was prepared by drying at room temperature, and the latex film was placed in approximately 200 times the concentration of benzene.
After being left to dissolve for 8 hours, the solution was filtered through filter paper (#2), and the filtrate was dried at 70°C, and the amount of sol in the latex film was calculated.
（Ｅ）作用
磁気記録シートにおいて、繊維質基体の少なくとも片面
にゲル含有量が５〜７５％のスチレン・ブタジエン系ラ
テックス層を設け、更に磁気記録層、もう一方の面に可
視情報記録層を設ける事により、製造工程上の乾燥じわ
、塗布面の荒れ等のトラブル、寸法安定上のトラブルが
少なく、記録、再生装置の走行性が良好で、なおかつ、
磁気特性、可視情報特性の向上した記録シートを得る事
が出来る。(E) In the working magnetic recording sheet, a styrene-butadiene latex layer with a gel content of 5 to 75% is provided on at least one side of the fibrous substrate, and a magnetic recording layer is further provided on the other side, and a visible information recording layer is provided on the other side. As a result, there are fewer problems such as dry wrinkles in the manufacturing process, roughness of the coated surface, and problems with dimensional stability, and the running performance of recording and reproducing devices is good.
A recording sheet with improved magnetic properties and visible information properties can be obtained.
（Ｆ）実施例
以下に本発明を具体例で詳細に説明するが、本発明はこ
れに限定されるものではない。尚、実施例中の「部」及
び「％」はそれぞれ「重量部」及び「重量％」を示す。(F) Examples The present invention will be explained in detail using specific examples below, but the present invention is not limited thereto. In addition, "parts" and "%" in the examples indicate "parts by weight" and "% by weight", respectively.
実施例１．２
坪量１６０ｇ／ｍの紙の片面にゲル含有量２８％のスチ
レン・ブタジエン系ラテックス（日本合成ゴム社製 Ｔ
−２０２８）を固型で５ｇ１ｒｄ塗布、１０５℃で乾燥
した。これを支持体Ａとする。Example 1.2 Styrene-butadiene latex with a gel content of 28% (manufactured by Japan Synthetic Rubber Co., Ltd. T) was coated on one side of paper with a basis weight of 160 g/m.
-2028) was applied as a solid in 5g/1rd coat and dried at 105°C. This will be referred to as support A.
支持体Ａのラテックス塗布層の反対面に同じスチレン・
ブタジエン系ラテックス（Ｔ−２０２８）を固型で５ｇ
／ｒｄ塗布、乾燥した。これを支持体Ｂとする。The same styrene layer was applied to the opposite side of the latex coating layer of support A.
5g of solid butadiene latex (T-2028)
/rd coating and drying. This will be referred to as support B.
塗液を固型分で３０ｇ／ＴｒＩ塗布、磁場配向後１０５
℃で乾燥した。これを磁気層塗布紙Ｂとする。30g/TrI coating in solid content, 105 after magnetic field orientation
Dry at °C. This is referred to as magnetic layer coated paper B.
感熱記録層塗液を以下の様にして調製した。A heat-sensitive recording layer coating solution was prepared as follows.
Ａ液
Ｂ液
以上をボールミル中で分散し磁気記録層塗液を調製した
。A magnetic recording layer coating liquid was prepared by dispersing liquid A and liquid B in a ball mill.
支持体Ａのラテックス層上に磁気記録層塗液を固型分で
３０ｇ１ｒｄ塗布、磁場配向後１０５℃で乾燥した。こ
れを磁気層塗布紙Ａとする。A magnetic recording layer coating liquid of 30 g in solid form was coated on the latex layer of support A, and after magnetic field orientation, it was dried at 105°C. This is referred to as magnetic layer coated paper A.
支持体Ｂの一方のラテックス層上に磁気記録層Ａ液とＢ
液を別々にサンドグライダ−にて平均粒子径約２μとな
るまで分散し、次の配合で感熱記録層塗液を調製した。Magnetic recording layers A and B are placed on one latex layer of support B.
The liquids were separately dispersed using a sand glider until the average particle size was approximately 2 μm, and a heat-sensitive recording layer coating liquid was prepared using the following formulation.
磁気層塗布紙Ａの磁気層と反対面に感熱記録層塗液を固
型で５ｇ／ｒｒＩ塗布、５０℃で乾燥し、スーパーカレ
ンダー処理し、本発明の実施例１の磁気記録シートを得
た。A heat-sensitive recording layer coating liquid was coated in solid form at 5 g/rrI on the opposite side of the magnetic layer of magnetic layer coated paper A, dried at 50° C., and supercalendered to obtain a magnetic recording sheet of Example 1 of the present invention. .
磁気層塗布紙Ｂの磁気層と反対面に感熱記録層塗液を固
型で５ｇ／ｍ塗布、５０℃で乾燥し、スーパーカレンダ
ー処理し、本発明の実施例２の磁気記録シートを得た。A heat-sensitive recording layer coating liquid was applied in solid form at 5 g/m on the opposite side of the magnetic layer of magnetic layer coated paper B, dried at 50° C., and supercalendered to obtain a magnetic recording sheet of Example 2 of the present invention. .
実施例３．４
実施例１．２の磁気層塗布紙Ａ、Ｈの磁気記録層上にポ
リビニルアルコール水溶液を固型で３ｇ／ゴ塗布、１０
５℃で乾燥した後、同様に感熱記録層を設け、５０℃で
乾燥後スーパーカレンダー処理して、各々実施例３．４
の磁気記録シートを得た。Example 3.4 On the magnetic recording layer of the magnetic layer coated papers A and H of Example 1.2, a solid polyvinyl alcohol aqueous solution was applied at 3 g/go, 10
After drying at 5°C, a heat-sensitive recording layer was similarly provided, and after drying at 50°C, supercalender treatment was performed to obtain Examples 3 and 4.
A magnetic recording sheet was obtained.
実施例５．６
実施例３．４で感熱記録層を設けた後、更に、感熱記録
層上にポリビニルアルコール水溶液を固型で３ｇ／ｍ塗
布、５０℃で乾燥し、スーパーカレンダー処理して各々
実施例５．６の磁気記録シートを得た。Example 5.6 After providing the heat-sensitive recording layer in Example 3.4, a polyvinyl alcohol aqueous solution was applied in solid form at 3 g/m on the heat-sensitive recording layer, dried at 50°C, and supercalendered. A magnetic recording sheet of Example 5.6 was obtained.
実施例７．８
実施例１．２で用いたゲル含有量２８％のスチレン・ブ
タジエン系ラテックスの代わりに、ゲル含有量が８％の
スチレン・ブタジエン系ラテックス（住友ノーガタック
社製、Ｐ８７０２）を用いた以外は実施例１．２と同様
にして各々実施例７．８の磁気記録シートを得た。Example 7.8 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 1.2, a styrene-butadiene latex with a gel content of 8% (manufactured by Sumitomo Naugatuck, P8702) was used. Magnetic recording sheets of Examples 7 and 8 were obtained in the same manner as in Examples 1 and 2, except that the magnetic recording sheets of Examples 7 and 8 were used.
実施例９
実施例１で用いたゲル含有量２８％のスチレン・ブタジ
エン系ラテックスの代わりに、ゲル含有量が７０％のス
チレン・ブタジエン系ラテックス（旭化成社製、Ｌ−１
２３５）を用いた以外は実施例１と同様にして磁気記録
シートを得た。Example 9 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 1, a styrene-butadiene latex with a gel content of 70% (manufactured by Asahi Kasei Corporation, L-1) was used.
A magnetic recording sheet was obtained in the same manner as in Example 1 except that 235) was used.
比較例１．２
実施例１．２のゲル含有量２８％のスチレン・ブタジエ
ン系ラテックスの代わりに、ゲル含有量が８５％のスチ
レン・ブタジエン系ラテックス（住友ノーガタック社製
、５ＮＸ−４２７０）を用いた以外は実施例１．２と同
様にして各々比較例１．２の磁気記録シートを得た。Comparative Example 1.2 Instead of the styrene-butadiene latex with a gel content of 28% in Example 1.2, a styrene-butadiene latex with a gel content of 85% (manufactured by Sumitomo Naugatuck, 5NX-4270) was used. Magnetic recording sheets of Comparative Example 1.2 were obtained in the same manner as in Example 1.2, except that the magnetic recording sheets were used.
比較例３．４
実施例３．４で用いたゲル含有量２８％のスチレン・ブ
タジエン系ラテックスの代わりに、ゲル含有量が８５％
のスチレン・ブタジエン系ラテックス（住友ノーガタッ
ク社製、５ＮＸ−４２７０）を用いた以外は実施例３．
４と同様にして各々比較例３．４の磁気記録シートを得
た。Comparative Example 3.4 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 3.4, a gel content of 85% was used.
Example 3 except that styrene-butadiene latex (5NX-4270, manufactured by Sumitomo Naugatuck) was used.
Magnetic recording sheets of Comparative Examples 3 and 4 were obtained in the same manner as in Example 4.
実施例１０
実施例１で用いた磁気層塗布紙Ａの磁気層と反対面に下
記組成の熱転写受理層を固型塗布量１０ｇ ／ ｎ（塗
布し、１０５℃で乾燥した。Example 10 A thermal transfer receiving layer having the following composition was coated on the surface opposite to the magnetic layer of the magnetic layer coated paper A used in Example 1 at a solid coating amount of 10 g/n, and dried at 105°C.
続いてスーパーカレンダー処理を行ない、磁気記録シー
トを得た。Subsequently, a supercalender treatment was performed to obtain a magnetic recording sheet.
実施例１１
実施例１０の磁気層塗布紙Ａの代わりに実施例２で用い
た磁気層塗布紙Ｂを用いた以外は実施例１０と同様にし
て磁気記録シートを得た。Example 11 A magnetic recording sheet was obtained in the same manner as in Example 10, except that magnetic layer coated paper B used in Example 2 was used instead of magnetic layer coated paper A in Example 10.
実施例１２．１３
実施例３．４の感熱記録層の代わりに実施例１０の熱転
写受理層を固型分塗布量１０ｇ／ｍ塗布し、１０５℃で
乾燥した後、スーパーカレンダー処理を行ない、各々実
施例１２．１３の磁気記録シートを得た。Example 12.13 Instead of the heat-sensitive recording layer of Example 3.4, the thermal transfer receiving layer of Example 10 was applied in a solid coating amount of 10 g/m, and after drying at 105° C., supercalendering was performed. A magnetic recording sheet of Example 12.13 was obtained.
実施例１４
実施例１０で用いたゲル含有量２８％のスチレン・ブタ
ジエン系ラテックスの代わりに、ゲル含有量が７０％の
スチレン・ブタジエン系ラテックス（無化成社製、Ｌ−
１２３５）を用いた以外は実施例１０と同様にして磁気
記録シートを得た。Example 14 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 10, a styrene-butadiene latex with a gel content of 70% (manufactured by Mukasei Co., Ltd., L-
A magnetic recording sheet was obtained in the same manner as in Example 10 except that 1235) was used.
比較例５
実施例１０で用いたゲル含有量２８％のスチレン・ブタ
ジエン系ラテックスの代わりに、ゲル含有量が８５％の
スチレン・ブタジエン系ラテックス（住友ノーガタック
社製、５ＮＸ−４２７０）を用いた以外は実施例１０と
同様にして磁気記録シートを得た。Comparative Example 5 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 10, a styrene-butadiene latex with a gel content of 85% (manufactured by Sumitomo Naugatuck, 5NX-4270) was used. A magnetic recording sheet was obtained in the same manner as in Example 10 except for this.
比較例６．７
実施例１２．１３で用いたゲル含有量２８％のスチレン
・ブタジエン系ラテックスの代わりに、ゲル含有量が８
５％のスチレン・ブタジエン系ラテックス（住友ノーガ
タック社製、５ＮＸ−４２７０）を用いた以外は実施例
１２．１３と同様にして各々比較例６．７の磁気記録シ
ートを得た。Comparative Example 6.7 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 12.13, a gel content of 8% was used.
Magnetic recording sheets of Comparative Example 6.7 were obtained in the same manner as in Example 12.13 except that 5% styrene-butadiene latex (5NX-4270, manufactured by Sumitomo Naugatuck) was used.
実施例１５
実施例１で用いた磁気層塗布紙Ａの磁気層と反対面に下
記組成のインキジェット受理層を固型分塗布量Ｌｏｇ／
ｎｆ塗布し、１０５℃で乾燥してスーパーカレンダー処
理を行ない、磁気記録シートを得た。Example 15 An inkjet receiving layer having the following composition was applied to the opposite side of the magnetic layer of the magnetic layer coated paper A used in Example 1 at a solid coating amount of Log/
nf coating, drying at 105° C. and supercalendering to obtain a magnetic recording sheet.
実施例１６．１７
実施例３．４の感熱記録層の代わりに実施例１５のイン
キジェット受理層を固型分塗布量Ｌｏｇ／ｄ塗布し、１
０５℃で乾燥した後、スーパーカレンダー処理を行ない
各々実施例１６．１７の磁気記録シートを得た。Example 16.17 The inkjet receiving layer of Example 15 was applied in place of the heat-sensitive recording layer of Example 3.4, and the solid content coating amount was Log/d.
After drying at 05° C., supercalendering was performed to obtain magnetic recording sheets of Examples 16 and 17, respectively.
実施例１８
実施例１５で用いたゲル含有量２８％のスチレン・ブタ
ジエン系ラテックスの代わりに、ゲル含有量が７０％の
スチレン・ブタジエン系ラテックス（無化成社製、Ｌ−
１２３５）を用いた以外は実施例１５と同様にして磁気
記録シートを得た。Example 18 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 15, a styrene-butadiene latex with a gel content of 70% (manufactured by Mukasei Co., Ltd., L-
A magnetic recording sheet was obtained in the same manner as in Example 15 except that 1235) was used.
比較例８
実施例１５で用いたゲル含有量２８％のスチレン・ブタ
ジエン系ラテックスの代わりに、ゲル含有量が８５％の
スチレン・ブタジエン系ラテックス（住人ノーガタック
社製、５ＮＸ−４２７０）を用いた以外は実施例１５と
同様にして磁気記録シートを得た。Comparative Example 8 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 15, a styrene-butadiene latex with a gel content of 85% (5NX-4270, manufactured by Naugatuck Co., Ltd.) was used. A magnetic recording sheet was obtained in the same manner as in Example 15 except for this.
比較例９．１０
実施例１６．１７で用いたゲル含有量２８％のスチレン
・ブタジエン系ラテックスの代わりに、ゲル含有量が８
５％のスチレン・ブタジエン系ラテックス（住人ノーガ
タック社製、５ＮＸ−４２７０）を用いた以外は実施例
１６．１７と同様にして各々比較例８．９の磁気記録シ
ートを得た。Comparative Example 9.10 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 16.17, a gel content of 8% was used.
Magnetic recording sheets of Comparative Examples 8 and 9 were obtained in the same manner as in Examples 16 and 17, except that 5% styrene-butadiene latex (5NX-4270, manufactured by Naugatuck Co., Ltd.) was used.
実施例１９
実施例１で用いた磁気塗布紙Ａの磁気層と反対面に下記
組成の印刷インキ受理層を固型分塗布量Ｌｏｇ／ｉ塗布
し、１０５℃で乾燥し、続いてスーパーカレンダー処理
を行ない、磁気記録シートを得た。Example 19 A printing ink-receiving layer having the following composition was applied to the surface opposite to the magnetic layer of the magnetically coated paper A used in Example 1 in a solid coating amount of Log/i, dried at 105°C, and then subjected to supercalender treatment. A magnetic recording sheet was obtained.
実施例２０．２１
実施例３．４の感熱記録層の代わりに実施例１９の印刷
イ、ンキ受理層を固型分塗布量１０ｇ／ｕｉ塗布し、１
０５℃で乾燥し、続いてスーパーカレンダー処理を行な
い、実施例２０．２１の磁気記録シートを得た。Example 20.21 Instead of the heat-sensitive recording layer of Example 3.4, the printing and ink receiving layer of Example 19 was applied in a solid coating amount of 10 g/ui.
The magnetic recording sheets of Examples 20 and 21 were obtained by drying at 05° C. and subsequent supercalendering.
実施例２２
実施例１９で用いたゲル含有量２８％のスチレン・ブタ
ジエン系ラテックスの代わりに、ゲル含有量が７０％の
スチレン・ブタジエン系ラテックス（旭化成社製、Ｌ−
１２３５）を用いた以外は実施例１９と同様にして磁気
記録シートを得た。Example 22 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 19, a styrene-butadiene latex with a gel content of 70% (manufactured by Asahi Kasei Corporation, L-
A magnetic recording sheet was obtained in the same manner as in Example 19 except that 1235) was used.
比較例１１
実施例１９て用いたゲル含有量２８％のスチレン・ブタ
ジエン系ラテックスの代わりに、ゲル含有量が８５％の
スチレン・ブタジエン系ラテックス（住人ノーガタツタ
社製、５ＮＸ−４２７０）を用いた以外は実施例１９と
同様にして磁気記録シートを得た。Comparative Example 11 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 19, a styrene-butadiene-based latex with a gel content of 85% (manufactured by Susumu Noga Tatsuta Co., Ltd., 5NX-4270) was used. A magnetic recording sheet was obtained in the same manner as in Example 19.
比較例１２．１３
実施例２０．２１で用いたゲル含有量２８％のスチレン
・ブタジエン系ラテックスの代わりに、ゲル含有量が８
５％のスチレン・ブタジエン系ラテックス（住人ノーガ
タック社製、５ＮＸ−４２７０）を用いた以外は実施例
２０．２１と同様にして比較例１２．１３の磁気記録シ
ートを得た。Comparative Example 12.13 Instead of the styrene-butadiene latex with a gel content of 28% used in Example 20.21, a gel content of 8% was used.
A magnetic recording sheet of Comparative Example 12.13 was obtained in the same manner as in Example 20.21, except that 5% styrene-butadiene latex (5NX-4270, manufactured by Tenman Naugatuck) was used.
比較例１４
実施例１で用いたゲル含有量２８％のスチレン・ブタジ
エン系ラテックスを設けないで坪量１６０ｇ／ｒｒｆの
基紙に直接、磁気記録層を設け、それ以降は実施例１と
同様にして磁気記録シートを得た。Comparative Example 14 A magnetic recording layer was provided directly on a base paper with a basis weight of 160 g/rrf without providing the styrene-butadiene latex with a gel content of 28% used in Example 1, and the subsequent steps were carried out in the same manner as in Example 1. A magnetic recording sheet was obtained.
実施例２３
実施例１で用いた磁気記録層のスチレン・ブタジエン系
ラテックスの７２０２８ （ゲル含有量２８％）の代わ
りに５ＮＸ−４２７０（ゲル含有量８５％）を用いた以
外は実施例１と同様にして磁気記録シートを得た。Example 23 Same as Example 1 except that 5NX-4270 (gel content 85%) was used instead of 72028 (gel content 28%) of the styrene-butadiene latex of the magnetic recording layer used in Example 1. A magnetic recording sheet was obtained.
以上、実施例で及び比較例で得られた磁気記録シートを
以下の方法で評価し、結果を表１に示す。The magnetic recording sheets obtained in the Examples and Comparative Examples above were evaluated by the following method, and the results are shown in Table 1.
（角型比）
Ｂ−Ｈカーブトレーサーを使用し、磁気記録層の配向方
向の飽和磁束密度Ｂｍと残留磁束密度Ｂｒを測定し、両
者の比Ｂｒ／Ｂｍを求め、角型比とした。数値の大きい
方が磁性粉の分散性が優れている。(Square Ratio) Using a B-H curve tracer, the saturation magnetic flux density Bm and residual magnetic flux density Br in the orientation direction of the magnetic recording layer were measured, and the ratio Br/Bm was determined, which was defined as the squareness ratio. The larger the number, the better the dispersibility of the magnetic powder.
（感熱記録層印字濃度）
感熱記録層に熱傾斜計（東洋精機製）で温度１２０℃、
圧力１ ｋｇ／Ｃｉ、接触時間３ ｓｅｃで印字し、そ
れらの発色濃度をマクベス濃度計で測定した。(Print density on the heat-sensitive recording layer) The temperature of the heat-sensitive recording layer was 120°C using a thermal inclinometer (manufactured by Toyo Seiki).
Printing was carried out at a pressure of 1 kg/Ci and a contact time of 3 seconds, and the color density was measured using a Macbeth densitometer.
数値の大きい方が発色性が高い。The larger the number, the higher the color development.
（熱転写受理層の画質）
市販の溶融熱転写プリンターでインキシートから熱転写
インキを磁気記録紙の熱転写受理層に転写させ、印字性
を画線のカスレで評価した。３段階で評価し、○が優れ
ている、△が使用可能レベル、×が劣る事を示す。(Image Quality of Thermal Transfer Receptive Layer) Thermal transfer ink was transferred from the ink sheet to the thermal transfer receiving layer of magnetic recording paper using a commercially available melt thermal transfer printer, and printing performance was evaluated by the fading of the image. Evaluation is made on a three-level scale, with ○ indicating excellent, △ indicating usable level, and × indicating inferior.
（インキジェット受理層の画質）
市販のインキジェットプリンター（キャノン社製、Ａ−
１２１０）でブラックインキで磁気記録シートのインキ
ジェット受理層に印字し、得られた画質を目視で評価し
た。○が優れている、△が使用可能レベル、×が劣る事
を示す。(Image quality of inkjet receiving layer) Commercially available inkjet printer (manufactured by Canon, A-
1210) with black ink on the inkjet receiving layer of the magnetic recording sheet, and the resulting image quality was visually evaluated. ○ indicates excellent, △ indicates usable level, and × indicates inferior.
（印刷インキ受理層の画質）
市販のオフセット印刷機によりブラックインキで磁気記
録シートの印刷インキ受理層に印刷し、得られた画質を
目視で評価した。○が優れている、△が使用可能レベル
、×が劣る事を示す。(Image quality of printing ink receiving layer) Black ink was printed on the printing ink receiving layer of the magnetic recording sheet using a commercially available offset printing machine, and the resulting image quality was visually evaluated. ○ indicates excellent, △ indicates usable level, and × indicates inferior.
（寸法安定性）
磁気記録シートをカードの大きさ（５４ｍｍＸ８６ｍｍ
）に切断し、２０℃６５％ＲＨＩ昼夜放置後の寸法を実
測した後、２０℃、８５％ＲＨＩ昼夜放置後の寸法を実
測し、２０℃、８５％ＲＨでの寸法と２０℃、６５％Ｒ
Ｈでの寸法の差を２０℃、６５％ＲＨでの寸法でわり、
１００倍して伸び率（％）を出した。(Dimensional stability) The magnetic recording sheet is the size of the card (54mm x 86mm
), and measured the dimensions after standing at 20°C and 65% RHI day and night, then measured the dimensions after standing at 20°C and 85% RHI day and night, and measured the dimensions at 20°C and 85% RH and the dimensions at 20°C and 65% R
Divide the difference in dimensions at H by the dimensions at 20℃ and 65%RH,
The elongation rate (%) was calculated by multiplying by 100.
（面のぼこつき）
スーパーカレンダー処理前の磁気記録層、可視情報記録
層のぼこつきを評価した。○が目立たない、△がやや目
立つレベル、×が目立つ事を示す。(Surface unevenness) The unevenness of the magnetic recording layer and visible information recording layer before supercalender treatment was evaluated. ○ indicates that it is not noticeable, △ indicates that it is slightly noticeable, and × indicates that it is noticeable.
○〜△は○と△の中間を示す。◯ to △ indicate an intermediate value between ◯ and △.
（以下余白）
（Ｇ）発明の効果
本発明の磁気記録シートは寸法安定性が良好で、磁気記
録特性、可視情報記録特性が優れている事は明らかであ
る。(The following is a blank space) (G) Effects of the Invention It is clear that the magnetic recording sheet of the present invention has good dimensional stability and excellent magnetic recording properties and visible information recording properties.
Claims (8)
５％のスチレン・ブタジエン系ラテックス層を、該ラテ
ックス層上に強磁性体粉末と水性結合剤を主成分とする
磁気記録層を設け、他面に合成バインダー及び／又は天
然バインダーを含有した可視情報記録層を設けた磁気記
録シート。(1) Gel content of 5 to 7 on at least one side of the fibrous substrate
A 5% styrene-butadiene latex layer is provided, and a magnetic recording layer mainly composed of ferromagnetic powder and an aqueous binder is provided on the latex layer, and a visible information layer containing a synthetic binder and/or a natural binder is provided on the other side. A magnetic recording sheet with a recording layer.
請求項１記載の磁気記録シート。(2) The magnetic recording sheet according to claim 1, further comprising a protective layer provided on the magnetic recording layer.
２記載の磁気記録シート。(3) The magnetic recording sheet according to claim 1 or 2, wherein the visible information recording layer is a heat-sensitive recording layer.
は２記載の磁気記録シート。(4) The magnetic recording sheet according to claim 1 or 2, wherein the visible information recording layer is a thermal transfer receiving layer.
求項１又は２記載の磁気記録シート。(5) The magnetic recording sheet according to claim 1 or 2, wherein the visible information recording layer is an inkjet receiving layer.
１又は２記載の磁気記録シート。(6) The magnetic recording sheet according to claim 1 or 2, wherein the visible information recording layer is a printing ink receiving layer.
求項３記載の磁気記録シート。(7) The magnetic recording sheet according to claim 3, characterized in that a protective layer is provided on the heat-sensitive recording layer.
のスチレン・ブタジエン系ラテックスが主成分である請
求項１又は２記載の磁気記録シート。(8) The aqueous binder of the magnetic recording layer has a gel content of 5 to 75%
3. The magnetic recording sheet according to claim 1, wherein the main component is a styrene-butadiene latex.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2151843A JP2857227B2 (en) | 1990-06-11 | 1990-06-11 | Magnetic recording sheet |
| US08/168,397 US5447790A (en) | 1990-03-23 | 1993-12-17 | Magnetic recording medium having a fibrous substrate, a styrene-butadiene underlayer, and a magnetic layer on a first side and an image recording layer on the second side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2151843A JP2857227B2 (en) | 1990-06-11 | 1990-06-11 | Magnetic recording sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0443094A true JPH0443094A (en) | 1992-02-13 |
| JP2857227B2 JP2857227B2 (en) | 1999-02-17 |
Family
ID=15527499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2151843A Expired - Fee Related JP2857227B2 (en) | 1990-03-23 | 1990-06-11 | Magnetic recording sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2857227B2 (en) |
-
1990
- 1990-06-11 JP JP2151843A patent/JP2857227B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2857227B2 (en) | 1999-02-17 |
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