JPH0455395B2 - - Google Patents
Info
- Publication number
- JPH0455395B2 JPH0455395B2 JP61089487A JP8948786A JPH0455395B2 JP H0455395 B2 JPH0455395 B2 JP H0455395B2 JP 61089487 A JP61089487 A JP 61089487A JP 8948786 A JP8948786 A JP 8948786A JP H0455395 B2 JPH0455395 B2 JP H0455395B2
- Authority
- JP
- Japan
- Prior art keywords
- ink
- layer
- pigment
- recording medium
- 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
- 239000010410 layer Substances 0.000 claims description 61
- 239000000049 pigment Substances 0.000 claims description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- 239000011247 coating layer Substances 0.000 claims description 14
- 239000000377 silicon dioxide Substances 0.000 claims description 14
- 239000010419 fine particle Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000012463 white pigment Substances 0.000 claims description 10
- 238000004438 BET method Methods 0.000 claims description 7
- 238000001454 recorded image Methods 0.000 claims description 4
- 239000000976 ink Substances 0.000 description 49
- 239000011248 coating agent Substances 0.000 description 25
- 238000000576 coating method Methods 0.000 description 25
- 238000007639 printing Methods 0.000 description 17
- 238000010521 absorption reaction Methods 0.000 description 14
- 239000000853 adhesive Substances 0.000 description 12
- 230000001070 adhesive effect Effects 0.000 description 12
- 239000000843 powder Substances 0.000 description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 8
- 229920000126 latex Polymers 0.000 description 8
- 239000004816 latex Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 239000000975 dye Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- 229920002472 Starch Polymers 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 238000011156 evaluation Methods 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
- 229920003048 styrene butadiene rubber Polymers 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 108010073771 Soybean Proteins Proteins 0.000 description 3
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 description 3
- 239000011230 binding agent 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
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Natural products CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 3
- -1 ketone alcohols Chemical class 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 150000005846 sugar alcohols Polymers 0.000 description 3
- 239000000454 talc Substances 0.000 description 3
- 229910052623 talc Inorganic materials 0.000 description 3
- 229920003169 water-soluble polymer Polymers 0.000 description 3
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 108010076119 Caseins Proteins 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229920000881 Modified starch Polymers 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 229920006243 acrylic copolymer Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000005215 alkyl ethers Chemical class 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- BTANRVKWQNVYAZ-UHFFFAOYSA-N butan-2-ol Chemical compound CCC(C)O BTANRVKWQNVYAZ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000001254 oxidized starch Substances 0.000 description 2
- 235000013808 oxidized starch Nutrition 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 235000019710 soybean protein Nutrition 0.000 description 2
- 239000011115 styrene butadiene Substances 0.000 description 2
- 229920001059 synthetic polymer Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 1
- ZWVMLYRJXORSEP-UHFFFAOYSA-N 1,2,6-Hexanetriol Chemical compound OCCCCC(O)CO ZWVMLYRJXORSEP-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- WFSMVVDJSNMRAR-UHFFFAOYSA-N 2-[2-(2-ethoxyethoxy)ethoxy]ethanol Chemical compound CCOCCOCCOCCO WFSMVVDJSNMRAR-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
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 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
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 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
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003429 antifungal agent Substances 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000000981 basic dye Substances 0.000 description 1
- 239000000227 bioadhesive Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate 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
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 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
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 235000019646 color tone Nutrition 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000982 direct dye Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229940051250 hexylene glycol Drugs 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229940035429 isobutyl alcohol Drugs 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide 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
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-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
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000003352 sequestering agent Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 229940001941 soy protein Drugs 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- YODZTKMDCQEPHD-UHFFFAOYSA-N thiodiglycol Chemical compound OCCSCCO YODZTKMDCQEPHD-UHFFFAOYSA-N 0.000 description 1
- 229950006389 thiodiglycol Drugs 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
- 229910021511 zinc hydroxide 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
-
- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
- B41M5/506—Intermediate layers
-
- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
- B41M5/508—Supports
-
- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
Landscapes
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Paper (AREA)
Description
(A) 産業上の利用分野
本発明はインクを用いて記録する記録媒体に関
するものであり、特に水溶性染料を含有する水性
インクの微小液滴を種々の作動原理により飛翔さ
せ、記録媒体に付着させて記録をおこなう多色記
録に適したインクジエツト用記録媒体に関するも
のである。
(B) 従来の技術
インクジエト記録方式は高速、低騒音、多色化
が容易、記録パターンの融通性が大きい、更に現
像、定着が不要等の特徴があり、漢字を含め各種
図形及びカラー画像等のハードコピーを得る方法
として、種々の用途に於いて急速に普及してい
る。更に、多色インクジエツト方式により形成さ
れる画像は、製版方式による多色印刷やカラー写
真方式により印画に比較して遜色のない記録画像
を得ることも可能であり、作成部数が少なくて済
む用途に於いては、写真技術によるよりも安価で
あることからフルカラー画像記録分野にまで広く
応用されつつある。
インクジエツト記録方式で使用される記録媒体
としては、通常の印刷や筆記に使われる上質紙や
コーテツド紙を使うべく装置やインク組成の面か
ら努力が成されてきた。しかし、装置の高速化、
高精細化あるいはフルカラー化等インクジエツト
記録装置の性能の向上や用途の拡大に伴い、記録
媒体に対してよりも高度な特性が要求されるよう
になつた。すなわち、当該記録媒体としては、イ
ンクドツトの濃度が高く、色調が明るく鮮やかで
あること、インクの吸収が早くてインクドロツプ
レツトが重なつた場合に於いてもインクが流れ出
したり滲んだりしないこと、インクドツトの横方
向への拡散が必要以上に大きくなく、かつ周辺が
滑らかでぼやけないこと。更に、記録画像が紫外
線や空気中の酸素又は水に曝された場合の染料の
抵抗性を低下させず、好ましくは増強させること
等が要求される。これらの要求を満たすために、
従来から幾つかの提案がなされてきた。例えば、
吸収性やインクドツトの滲みを改良するために特
開昭52−53012号公報には、低サイズの原紙に表
面加工用の塗料を湿潤させてなるインクジエツト
記録用紙が、また、特開昭53−49113号公報には、
尿素−ホルマリン樹脂粉末を内添したシートに水
溶性高分子を含浸させたインクジエツト記録用紙
が開示されている。また、塗工紙の例としては、
特開昭55−5830号公報に、支持体表面にインク吸
収性の塗層を設けたインクジエツト記録用紙が開
示され、特開昭55−51583号公報では、被覆層中
の顔料として非膠質シリカ粉末をつかつた例が、
更に、特開昭55−11829号公報ではインク吸収速
度の異なる２層構造を使つた塗抹紙の例が開示さ
れている。
一般にインク吸収性のあるインク受理層はイン
クを速やかに均等に吸収し保持するための空隙を
多く有する必要がある。インク受理層として例え
ば、炭酸カルシウムを主顔料とし、バインダーと
して水溶性高分子やスチレンブタジエン系ラテツ
クスや酢酸ビニル系などを使用したコートタイプ
インクジエツト記録媒体では、支持体に対する塗
工層の接着性が良く、構造時・使用時において
も、塗層ハガレや粉落ちといつた問題はないが、
屈折率の高い顔料を使用しているため不透明度が
高く、印字画像、特にカラー印字画像で画像が白
つぽくなり鮮明な画像が得られなかつた。また比
表面積を比較的小さい顔料を使用しているため、
インク吸収速度が遅く、あふれてしまい、印字品
質を落としてしまう。
一方前述した特開昭55−11829号公報では下層
にインク吸収性大の層を設け、最表層は下層より
もインク吸収性小の層を設けるといつた２層の構
造を提案しているが、下層を設けることにより最
表層の厚みが一様にできるためこの面での印字ム
ラは防止できるものの最表層の吸収性が小さいた
め、高速でのカラー重ね印字を行なつた場合にイ
ンクが吸収しにくく、あふれてきて、印字品質を
極端に落とすことになる。
また、インク受理層として例えば、合成微粒子
シリカを主顔料とし、ポリビニルアルコールやポ
リビニルピロリドンなどの水溶性高分子をバイダ
ーとしたコートタイプインクジエツト記録媒体で
は画像の色再現性及び色濃度は著しく改良され、
合成微粒子シリカが屈折率が低いため透明度が高
く、印字画像、特にカラー印字画像で画像が白つ
ぽくならなくなり、鮮明な画像が得られる。ま
た、合成微粒子シリカは比表面積が大きいため、
インク吸収速度が速く高速で重ね印字してもイン
クがあふれてしまうといつた欠点も著しく改良さ
れ高印字品質の画像が得られる。
しかし、インク受理層の厚みを一様にして印字
ムラを防止するためには、２層以上の層構造を持
たせる必要があるが合成微粒子シリカを主顔料と
する塗層を２層以上塗工すると支持体との接着性
や塗層自体の接着性が悪いため、塗層ハガレや粉
落ちといつた問題がおこり、使用時においても、
欠落した粉がヘツドのノズルの目詰りを生じさせ
てしまい、印字に決定的な不都合を生じることが
ある。
塗層ハガレや粉落ちを問題のない程度まで改良
するために、バインダーの使用比率を高めていく
とインク吸収能力が低下し、高印字品質のインク
ジエツト記録媒体を提供できなかつた。また、合
成微粒子シリカを主顔料とする塗層を有するイン
クジエツト記録媒体にインクを印字するとシリカ
自体の屈折率の低さによつて、印字部分の透明性
が高くなり、裏面から印字画像が容易に見られる
といつた裏抜けといつた問題も生じてしまう。
(C) 発明が解決しようとする問題点
本発明は上述したように色再現性が良く、高い
色濃度で鮮明な印字画像を得た上でインク受理層
の厚みを一様にすることによつて印字ドツト径を
一定にコントロールし、ベタ印字部分でのムラを
なくし、インク吸収能力が高く、しかも塗層ハガ
レや粉落ち、インクの裏抜けといつた諸問題を解
決し、高印字品質のインクジエツト記録媒体、特
に高速印字に対応した高密度・高精細のフルカラ
ー用インクジエツト記録媒体を提供することを目
的としている。
(D) 問題点を解決するための手段
本発明は水性インクを用いて記録画像を形成す
るインクジエツト記録媒体において、該記録媒体
が支持体上に少なくとも２層以上の塗工層を有
し、該塗工層の最下層に主顔料として屈折率が
1.50以上かつBET法による比表面積が100m2／ｇ
未満の白色顔料を含有し、該最下層塗工量が、顔
料成分として５〜25ｇ／m2であり、その上層には
少なくとも１層以上のインク受理層を有し、該イ
ンク受理層には主顔料として屈折率が1.43〜1.48
かつBET法による比表面積が100m2／ｇ以上の合
成微粒子シリカを含有することを特徴とするイン
クジエツト記録媒体である。
このインクジエツト記録媒体はカラー熱転写受
像紙などのインク吸収能力を必要とする他の記録
媒体としても有用である。
本発明で使用される支持体としては、サイズ
紙、無サイズ紙を問わず、いわゆる一般紙であれ
ばいずれでも良い。
支持体上に設けられる塗工層のうち最下層は主
として屈折率が高く、透明性の低い、インク吸収
する能力が合成微粒子シリカに比較して小さい白
色顔料と接着剤からなる。BET法による比表面
積が100m2／ｇ以上の白色顔料を最下層の主顔料
とすると、インク吸収性が大きくなり、その上層
に設けられるインク受理層に保持される必要のあ
るインクを吸収し、このため裏抜けや色彩性が阻
害される。更に詳細には最下層に用いられる全顔
料成分100重量部に対して80重量部以上が該白色
顔料であることが好ましく、80重量部未満では、
製造時の塗液の流動性が低下し高濃度で調液しに
くかつたり、塗工後の接着性が劣つたり、本発明
になるインクジエツト記録媒体とした時のインク
印字後の裏抜けが大きいなどの欠点が生じやす
い。
なお、本発明に用いる該白色顔料とは、たとえ
ば、重質炭酸カルシウム、軽質炭酸カルシウム、
カオリン、クレー、タルク、水酸化アルミニウ
ム、二酸化チタン（ルチル型、アナターゼ型、）
サチンホワイト、亜硫酸カルシウム、硫酸カルシ
ウム、硫酸バリウム、酸化亜鉛、酸化マグネシウ
ム、水酸化亜鉛、水酸化マグネシウム、ヒドロタ
ルサイト、プラスチツクピグメント、尿素樹脂な
どがあげられるが、屈折率1.50〜2.80かつBET法
による比表面積が100m2／ｇ未満の白色顔料であ
れば、どのようなものでもよい。
さらに、該最下層塗工量は、支持体繊維が少な
くとも被覆される必要量塗工されていれば良い
が、不透明化、接着性の向上等を考慮して顔料成
分として５〜25ｇ／m2を塗工するのが好ましい。
５ｇ／m2未満では、支持体の被覆が充分でなかつ
たり、25ｇ／m2を越えると接着性が低くなつたり
するので好ましくはない。
さらに、該最下層は場合によつては、多層に分
けて塗工してもかまわないが、接着性によつて決
められ、この場合はこの多層をまとめて最下層と
する。
該最下層に用いる接着剤としては、特に限定す
るものではなく、スチレン−ブダジエン系共重合
体、スチレンブタジエン−アクリル系共重合体、
スチレン−アクリル系共重合体、酢ビ−アクリル
系共重合体、エチレン−酢ビ系共重合体、スチレ
ン無水マイレン酸系共重合体、ポリビニルアルコ
ール、ポリビニルピロリドン、等の合成高分子ラ
テツクスや合成高分子水溶性接着剤、および、酸
化澱粉、リン酸エステル化澱粉、酸素変性澱粉、
カゼイン、ゼラチン、大豆蛋白等の天然接着剤な
どの一般に知られた接着剤は全て使用可能であ
る。
なお、白色顔料に対する接着剤の配合量は対顔
料３〜30重量部が好ましいが特に限定されない。
又その他一般に使用される助剤である分散剤、
増粘剤、消泡剤、染料、滑剤、耐水化剤、PH調整
剤等適宜配合しても良い。
本発明による該最下層を支持体上に塗工する方
法はエアーナイフコーター、各種ブレードコータ
ー、ロールコーター、ビルブレードコーター、ゲ
ートロールコーター等あらゆる塗工ヘツドによつ
ても良く、又、オンマシン、オフマシンどちらで
あつても塗工できる。更に同時多層塗工でも良い
し、支持体の片面或いは両面に塗工することも可
能であり、これらに限定されるものではない。
本発明において、該最下層に望まれる特徴は支
持体繊維を充分に被覆し、その上層に設けるイン
ク受理層の厚みを一様に出来、しかも接着性の良
好なインクジエツト記録媒体を提供することに有
り、塗工乾燥後はマシンカレンダーやスーパーカ
レンダーなどの仕上げ工程により平滑性を高める
ことが好ましい。特に好ましくはベツク平滑度が
80秒以上が良いが、本発明の目的にそつていれ
ば、特にこの限りでない。
次に支持体上に設けられる塗工層のうち最下層
の上層に設けられる少なくとも１層以上のインク
受理層は、主として屈折率が低く、透明性の高い
インク吸収能力の高い合成微粒子シリカと接着剤
からなる。屈折率は1.50を超えるとインクジエツ
トに対する透明性が極端に低くなり、水性インク
を印字した際に色彩性が落ちる原因となる。本発
明に於ては特に屈折率が低い方が好ましく、特に
好ましくは1.43〜1.48のごく限られた狭い範囲で
ある。
またインク受理層に用いられる合成微粒子シリ
カはインク吸収能力の点からそのBET法による
比表面積が100m2／ｇ以上であることが好ましく、
特に好ましくは200m2／ｇ以上である。
インク受理層に含有される合成微粒子シリカ以
外の顔料としては、例えば炭酸カルシウム、カオ
リン、タルク、クレー、硫酸カルシウム、硫酸バ
リウム、酸化チタン、酸化亜鉛、炭酸亜鉛、ケイ
酸アルミニウム、水酸化アルミニウム、酸化アル
ミニウム、ケイ酸カルシウム、ケイ酸マグネシウ
ム、プラスチツクピグメント、尿素樹脂顔料等の
無機系、有機系の顔料があるが、いずれの顔料も
不透明性が高いために印字画像の色彩性を損なう
ため合成微粒子シリカの添加量はインク受理層中
の全顔料成分100重量部に対して80重量部以上に
することが好ましく、特に好ましくは95重量部以
上である。
インク受理層に用いられる接着剤としては例え
ば酸化澱粉、エーテル化澱粉、リン酸エステル化
澱粉などの澱粉誘導体、カルボキシメチルセルロ
ース、ヒドロキシエチルセルロース等のセルロー
ス誘導体、カゼイン、ゼラチン、大豆蛋白、ポリ
ビニルアルコール及びその誘導体、ポリビニルピ
ロリドン、無水マイレン酸樹脂、通常のスチレン
ブタジエン共重合体、メチルメタクリレート−ブ
タジエン共重合体等の共役ジエン系共重合体ラテ
ツクス、アクリル酸エステル及びメタクリル酸エ
ステルの重合体又は共重合体等のアクリル系重合
体ラテツクス、エチレン酢酸ビニル共重合体等の
ビニル系重合体ラテツクス、或いはこれらの各種
重合体のカルボキシル基等の官能基含有単量体に
よる官能基変性重合体ラテツクス、メラミン樹
脂、尿素樹脂等の熱硬化合成樹脂等の水性接着
剤、及びポリメチルメタクリレート、ポリウレタ
ン樹脂、不飽和ポリエステル樹脂、塩化ビニル−
酢酸ビニルコポリマー、ポリビニルブチラール、
アルキツド樹脂等の合成樹脂系接着剤が単独ある
いは複合して用いられる。これら接着剤のうち、
接着力の点からはポリビニルアルコール及びその
誘導体が好ましく、また光沢感の点からはカゼイ
ン、大豆蛋白、及びラテツクスが好ましく用いら
れる。
これら接着剤は顔料100部に対して２部〜100
部、好ましくは20部から90部が用いられるが顔料
の結着に充分な量であればよく、その比率は特に
限定されるものではない。しかし100部以上の接
着剤を用いると接着剤の造膜により空隙構造を減
らし、あるいは空隙を極端に小さくしてしまうた
め好ましくはない。
又水性インキにより記録された画像は水に流れ
ない法が好ましく、この目的のために耐水化剤と
してカチオン性樹脂、カチオン性界面活性剤、カ
チオン変性無機粒子等を添加することも出来る。
更に必要なら、顔料分散剤、増粘剤、流動性改
良剤、消泡剤、抑泡剤、離型剤、発砲剤、浸透
剤、着色顔料、着色染料、蛍光増白剤、紫外線吸
収剤、酸化防止剤、防腐剤、防バイ剤等を適宜配
合することも出来る。
本発明による該インク受理層を塗工する塗工す
る方法としては、エアーナイフコーター、各種ブ
レードコーター、ビルブレードコーター、ゲート
ロールコーター等あらゆる塗工ヘツドによつても
良く、又オンマシン、オフマシンどちらであつて
も塗工できる。更に同時多層塗工でも良いし、支
持体上に該最下層を設けられた上に塗工するので
あれば、両面でも片面でも塗工可能であり、該上
層インク受理層は少なくとも１層塗布されていれ
ば良い。
本発明に於て、該上層インク受理層の厚みを一
様に出来ることは重要なことであり、更に、イン
クジエツト記録媒体として要求されるインク吸収
量は用いられるインクの種類・量などによつても
異なるが、画像のあふれや流れを生じないことが
必要であり、特にインクの打ち込み量の多いマル
チカラー及びフルカラーインクジエツト記録媒体
では、インク吸収容量が10ｇ／m2であることが好
ましい。
該インク受理層の塗工量は顔料成分として好ま
しくは、５〜30ｇ／m2である。更に良好な印字品
質を得るためにはスーパーカレンダー、又はマシ
ンカレンダーなどを通して、平滑性が高いことが
望ましいが、あまり高くしすぎるとインクが吸収
しにくくなるので適宜設定する必要がある。平滑
性を重視するよりむしろ塗層の厚さの一様性を重
視すべきである。
本発明で言う水性インクとは、下記着色剤及び
液媒体、その他の添加剤から成る記録液体であ
る。
着色剤としては、直接染料、酸性染料、塩基性
染料、反応性染料あるいは食品用色素等の水溶性
染料がこのましく用いられる。
(A) Industrial Application Field The present invention relates to a recording medium recorded using ink, and in particular, a method in which minute droplets of water-based ink containing a water-soluble dye are caused to fly and adhere to the recording medium using various operating principles. The present invention relates to an inkjet recording medium suitable for multicolor recording in which recording is performed in parallel. (B) Conventional technology The inkjet recording method has the following characteristics: high speed, low noise, easy multicolor printing, great flexibility in recording patterns, and no need for development or fixing. It is rapidly gaining popularity as a method for obtaining hard copies of files for various purposes. Furthermore, images formed by the multicolor inkjet method can be used for multicolor printing using plate making or color photography to produce recorded images that are comparable to prints, making it ideal for applications that require a small number of copies to be produced. Since it is cheaper than photographic technology, it is being widely applied to the field of full-color image recording. Efforts have been made in terms of equipment and ink composition to use high-quality paper or coated paper used for ordinary printing and writing as the recording medium used in the inkjet recording method. However, increasing the speed of the device,
As the performance of inkjet recording devices improves, such as higher resolution or full color, and their applications expand, more advanced characteristics are now required of recording media. In other words, the recording medium must have high ink dot density, bright and vivid color tones, and must absorb ink quickly so that the ink will not run out or smudge even when ink droplets overlap. , The horizontal diffusion of the ink dots should not be larger than necessary, and the periphery should be smooth and not blurred. Furthermore, it is required that the resistance of the dye be not reduced, but preferably increased, when the recorded image is exposed to ultraviolet light, oxygen in the air, or water. To meet these demands,
Several proposals have been made in the past. for example,
In order to improve the absorbency and the bleeding of ink dots, Japanese Patent Application Laid-Open No. 52-53012 discloses an inkjet recording paper made by moistening a low-sized base paper with a paint for surface treatment. In the publication,
An inkjet recording paper is disclosed in which a sheet containing urea-formalin resin powder is impregnated with a water-soluble polymer. Also, examples of coated paper include:
JP-A-55-5830 discloses an inkjet recording paper having an ink-absorbing coating layer on the surface of the support, and JP-A-55-51583 discloses non-colloidal silica powder as a pigment in the coating layer. An example using
Further, Japanese Patent Application Laid-Open No. 11829/1982 discloses an example of a smear paper using a two-layer structure with different ink absorption speeds. In general, an ink-absorbing ink-receiving layer needs to have many voids in order to quickly and evenly absorb and retain ink. For example, in coat-type inkjet recording media in which calcium carbonate is the main pigment for the ink-receiving layer and a water-soluble polymer, styrene-butadiene latex, vinyl acetate, etc. is used as the binder, the adhesion of the coating layer to the support is poor. It is good, and there are no problems such as peeling of the paint layer or powder falling during construction and use.
Since a pigment with a high refractive index is used, the opacity is high, and printed images, especially color printed images, become whitish and clear images cannot be obtained. In addition, since we use pigments with a relatively small specific surface area,
The ink absorption speed is slow, resulting in overflow and poor print quality. On the other hand, the above-mentioned Japanese Patent Application Laid-open No. 55-11829 proposes a two-layer structure in which a lower layer has a higher ink absorbency, and the outermost layer has a lower ink absorbency than the lower layer. By providing a lower layer, the thickness of the outermost layer can be made uniform, so uneven printing can be prevented on this surface, but since the absorbency of the outermost layer is low, ink may be absorbed when performing color overlapping printing at high speed. It is difficult to do so, and it overflows, resulting in an extremely poor print quality. Furthermore, in coat-type inkjet recording media in which the ink-receiving layer uses, for example, synthetic fine-particle silica as the main pigment and a water-soluble polymer such as polyvinyl alcohol or polyvinylpyrrolidone as a binder, the color reproducibility and color density of images are significantly improved. ,
Synthetic fine-particle silica has a low refractive index, so it has high transparency, so printed images, especially color printed images, do not look white and clear images can be obtained. In addition, synthetic fine particle silica has a large specific surface area, so
The ink absorption speed is fast, and the disadvantage of overflowing ink even when printed repeatedly at high speeds is significantly improved, and images with high print quality can be obtained. However, in order to make the thickness of the ink-receiving layer uniform and prevent uneven printing, it is necessary to have a layer structure of two or more layers. As a result, problems such as peeling of the coating layer and powder falling occur due to poor adhesion to the support and the adhesion of the coating layer itself, and even during use.
The missing powder may clog the nozzle of the head, resulting in a serious problem with printing. In order to improve coating layer peeling and powder falling to a non-problematic level, increasing the ratio of binder used resulted in a decrease in ink absorption ability, making it impossible to provide an inkjet recording medium with high print quality. Additionally, when ink is printed on an inkjet recording medium that has a coating layer containing synthetic fine particle silica as the main pigment, the low refractive index of the silica itself increases the transparency of the printed area, making it easy to see the printed image from the back side. If it is seen, problems like bleed-through and other problems will occur. (C) Problems to be Solved by the Invention As mentioned above, the present invention has good color reproducibility, high color density, and clear printed images by making the thickness of the ink-receiving layer uniform. It controls the printing dot diameter to a constant level, eliminates unevenness in solid printing areas, has high ink absorption ability, and solves various problems such as peeling of the coating layer, powder falling, and ink bleed-through, and achieves high printing quality. The object of the present invention is to provide an inkjet recording medium, particularly a high-density, high-definition, full-color inkjet recording medium that is compatible with high-speed printing. (D) Means for Solving the Problems The present invention provides an inkjet recording medium for forming a recorded image using aqueous ink, wherein the recording medium has at least two or more coating layers on a support. The refractive index is the main pigment in the bottom layer of the coating layer.
1.50 or more and specific surface area by BET method is 100m 2 /g
The coating amount of the bottom layer is 5 to 25 g/m 2 as a pigment component, and the upper layer has at least one ink-receiving layer, and the ink-receiving layer has at least one white pigment. As the main pigment, the refractive index is 1.43-1.48
The inkjet recording medium is characterized in that it contains synthetic fine particle silica having a specific surface area of 100 m 2 /g or more as determined by the BET method. The inkjet recording medium is also useful in other recording media requiring ink absorption capacity, such as color thermal transfer receiver paper. The support used in the present invention may be any so-called general paper, regardless of size paper or non-size paper. Among the coating layers provided on the support, the bottom layer mainly consists of a white pigment with a high refractive index, low transparency, and an adhesive whose ability to absorb ink is smaller than that of synthetic fine particle silica. When a white pigment with a specific surface area of 100 m 2 /g or more by the BET method is used as the main pigment in the bottom layer, the ink absorbency becomes large, and the ink that needs to be retained in the ink receiving layer provided on the upper layer is absorbed. For this reason, bleed-through and color quality are inhibited. More specifically, it is preferable that the white pigment accounts for 80 parts by weight or more based on 100 parts by weight of all the pigment components used in the bottom layer, and if it is less than 80 parts by weight,
The fluidity of the coating liquid during manufacturing may be reduced, making it difficult to prepare at high concentrations, the adhesion after coating may be poor, and the ink may show through after printing when used as the inkjet recording medium of the present invention. disadvantages such as large size are likely to occur. The white pigment used in the present invention includes, for example, heavy calcium carbonate, light calcium carbonate,
Kaolin, clay, talc, aluminum hydroxide, titanium dioxide (rutile type, anatase type)
Examples include satin white, calcium sulfite, calcium sulfate, barium sulfate, zinc oxide, magnesium oxide, zinc hydroxide, magnesium hydroxide, hydrotalcite, plastic pigments, urea resin, etc., but with a refractive index of 1.50 to 2.80 and a BET method. Any white pigment with a specific surface area of less than 100 m 2 /g may be used. Furthermore, the coating amount of the lowermost layer may be such that the amount required to cover at least the support fibers is 5 to 25 g/m 2 as a pigment component in consideration of opacity, improvement of adhesion, etc. It is preferable to coat.
If it is less than 5 g/m 2 , the coating of the support will not be sufficient, and if it exceeds 25 g/m 2 , the adhesiveness will be low, which is not preferable. Furthermore, the lowermost layer may be applied in multiple layers depending on the case, but it is determined by the adhesiveness, and in this case, the multiple layers are combined to form the lowermost layer. The adhesive used for the bottom layer is not particularly limited, and may include styrene-butadiene copolymer, styrene-butadiene-acrylic copolymer,
Synthetic polymer latex and synthetic polymers such as styrene-acrylic copolymer, vinyl acetate-acrylic copolymer, ethylene-vinyl acetate copolymer, styrene maleic anhydride copolymer, polyvinyl alcohol, polyvinylpyrrolidone, etc. Molecular water-soluble adhesives, oxidized starch, phosphate esterified starch, oxygen-modified starch,
All commonly known adhesives can be used, such as natural adhesives such as casein, gelatin, and soy protein. The amount of adhesive to be mixed with the white pigment is preferably 3 to 30 parts by weight, but is not particularly limited. In addition, other commonly used auxiliary agents such as dispersants,
Thickeners, antifoaming agents, dyes, lubricants, waterproofing agents, pH adjusters, etc. may be added as appropriate. The method of coating the bottom layer according to the present invention on the support may be by any coating head such as an air knife coater, various blade coaters, roll coater, bill blade coater, gate roll coater, or on-machine, Can be applied with either off-machine. Further, simultaneous multilayer coating or coating on one or both sides of the support is also possible, and the present invention is not limited thereto. In the present invention, the desired characteristics of the lowermost layer are to sufficiently cover the support fibers, to make the thickness of the ink-receiving layer provided on the upper layer uniform, and to provide an inkjet recording medium with good adhesion. Yes, after coating and drying, it is preferable to improve the smoothness by a finishing process such as a machine calender or super calender. Particularly preferably, the Beck smoothness is
Although 80 seconds or more is preferable, there is no particular limitation to this as long as the purpose of the present invention is met. Next, at least one ink-receiving layer provided above the bottom layer of the coating layers provided on the support is mainly made of synthetic fine particle silica having a low refractive index, high transparency, and high ink absorption ability, and adhesion. It consists of a drug. If the refractive index exceeds 1.50, the transparency to the inkjet will be extremely low, which will cause the color quality to deteriorate when printing with water-based ink. In the present invention, it is particularly preferable that the refractive index is low, and particularly preferably in a very limited narrow range of 1.43 to 1.48. In addition, from the viewpoint of ink absorption ability, the synthetic fine particle silica used in the ink receiving layer preferably has a specific surface area of 100 m 2 /g or more by the BET method.
Particularly preferably, it is 200 m 2 /g or more. Pigments other than synthetic fine particle silica contained in the ink receiving layer include, for example, calcium carbonate, kaolin, talc, clay, calcium sulfate, barium sulfate, titanium oxide, zinc oxide, zinc carbonate, aluminum silicate, aluminum hydroxide, and aluminum oxide. There are inorganic and organic pigments such as aluminum, calcium silicate, magnesium silicate, plastic pigments, and urea resin pigments, but all pigments are highly opaque and impair the color quality of printed images, so synthetic fine particle silica is used. The amount added is preferably 80 parts by weight or more, particularly preferably 95 parts by weight or more, based on 100 parts by weight of all pigment components in the ink receiving layer. Examples of adhesives used in the ink receiving layer include starch derivatives such as oxidized starch, etherified starch, and phosphated starch, cellulose derivatives such as carboxymethylcellulose and hydroxyethylcellulose, casein, gelatin, soybean protein, polyvinyl alcohol, and derivatives thereof. , polyvinylpyrrolidone, maleic anhydride resin, ordinary styrene-butadiene copolymer, conjugated diene copolymer latex such as methyl methacrylate-butadiene copolymer, polymer or copolymer of acrylic acid ester and methacrylic acid ester, etc. Acrylic polymer latex, vinyl polymer latex such as ethylene-vinyl acetate copolymer, functional group-modified polymer latex with monomers containing functional groups such as carboxyl groups of these various polymers, melamine resin, urea resin Water-based adhesives such as thermosetting synthetic resins such as polymethyl methacrylate, polyurethane resins, unsaturated polyester resins, vinyl chloride, etc.
Vinyl acetate copolymer, polyvinyl butyral,
Synthetic resin adhesives such as alkyd resins may be used alone or in combination. Of these adhesives,
From the viewpoint of adhesive strength, polyvinyl alcohol and its derivatives are preferred, and from the viewpoint of glossiness, casein, soybean protein, and latex are preferred. These adhesives contain 2 parts to 100 parts per 100 parts of pigment.
parts, preferably 20 to 90 parts, is used, but the ratio is not particularly limited as long as it is sufficient to bind the pigment. However, if 100 parts or more of adhesive is used, the adhesive film formation reduces the void structure or makes the voids extremely small, which is not preferable. Furthermore, it is preferable that images recorded with water-based inks should not flow in water, and for this purpose, cationic resins, cationic surfactants, cation-modified inorganic particles, etc. may be added as waterproofing agents. If necessary, pigment dispersants, thickeners, fluidity improvers, defoamers, foam inhibitors, mold release agents, foaming agents, penetrants, colored pigments, colored dyes, optical brighteners, ultraviolet absorbers, Antioxidants, preservatives, anti-bacterial agents, etc. can also be blended as appropriate. The ink-receiving layer according to the present invention may be applied by any coating head such as an air knife coater, various blade coaters, bill blade coater, gate roll coater, or on-machine or off-machine. It can be coated with either. Further, simultaneous multilayer coating may be used, and if coating is performed on the bottom layer provided on the support, it is possible to coat on both sides or on one side, and the upper ink receiving layer is coated with at least one layer. It's fine as long as it's there. In the present invention, it is important that the thickness of the upper ink-receiving layer can be made uniform, and furthermore, the amount of ink absorption required for an inkjet recording medium depends on the type and amount of ink used. The ink absorption capacity is preferably 10 g/m 2 , but it is necessary that images do not overflow or run, especially for multi-color and full-color inkjet recording media in which a large amount of ink is deposited. The coating amount of the ink-receiving layer is preferably 5 to 30 g/m 2 based on the pigment component. In order to obtain even better printing quality, it is desirable to have high smoothness by passing it through a super calender or machine calender, but if the smoothness is too high, it becomes difficult to absorb the ink, so it is necessary to set it appropriately. Rather than emphasizing smoothness, emphasis should be placed on uniformity of coating layer thickness. The aqueous ink referred to in the present invention is a recording liquid comprising the following colorant, liquid medium, and other additives. As the coloring agent, water-soluble dyes such as direct dyes, acid dyes, basic dyes, reactive dyes, and food colorings are preferably used.
【表】【table】
【表】【table】
【表】
などが挙げられる。
また水性インク媒体としては、水および水溶性
の各種有機溶剤、例えば、メチルアルコール、エ
チルアルコール、ｎ−プロピルアルコール、イソ
プロピルアルコール、ｎ−ブチルアルコール、
sec−ブチルアルコール、tert−ブチルアルコー
ル、イソブチルアルコール等の炭素数１〜４のア
ルキルアルコール類；ジメチルホルムアミド、ジ
メチルアセトアミド等のアミド類；アセトン、ジ
アセトンアルコール等のケトンまたはケトンアル
コール類；テトラヒドロフラン、ジオキサン等の
エーテル類；ポリエチレングリコール、ポリプロ
ピレングリコール等のポリアルキレングリコール
類；エチレングリコール、プロピレングリコー
ル、ブチレングリコール、トリエチレングリコー
ル、１，２，６−ヘキサントリオール、チオジグ
リコール、ヘキシレングリコール、ジエチレング
リコール等のアルキレンが２〜６個のアルキレン
グリコール類；グリセリン、エチレングリコール
メチルエーテル、ジエチレングリコールメチル
（又はエチル）エーテル、トリエチレングリコー
ルモノメチルエーテル等の多価アルコールの低級
アルキルエーテル類等が挙げられる。
これらの多くの水溶性有機溶剤の中でもジエチ
レングリコール等の多価アルコール、トリエチレ
ングリコールモノメチルエーテル、トリエチレン
グリコールモノエチルエーテル等の多価アルコー
ルの低級アルキルエーテルは好ましいものであ
る。その他の添加剤としては例えばPH調節剤、金
属封鎖剤、防カビ剤、粘度調整剤、表面張力調整
剤、湿潤剤、界面活性剤及び防錆剤等が挙げられ
る。
インクジエツト適性の測定は下記の方法によつ
た。
インク吸収容量はポリエチレングリコール
（PEGNo.400）／水が1/1の溶液を用いて20℃で10
秒間一定面積のインク受理層に接触させ、余分な
液を吸取紙で取り除いてインク受理層中に吸収さ
れた溶液の重量を測定し、平方米当りのグラム数
として算出した値を用いた。
インク吸収速度はシヤープ製インクジエツトプ
リンター（IO−700）を使用して赤印字部（マゼ
ンダ＋イエロー）のベタ印字直後（約１秒後）に
ペーパー押えロールに接触させ、汚れが出るか出
ないかで判定した。
印字部分の鮮明さ、およびベタ印字部分でのム
ラ、印字部分の裏面からの視認性（印字部分の裏
抜け）については、シヤープ製インクジエツトプ
リンター（IO−700）を使用して赤印字部分（マ
ゼンダ＋イエロー）のベタ印字後の記録媒体につ
いて目視で行なつた。
接着性については、セロテープを記録媒体表面
に貼り、10Kg／cmの圧力で加圧ローラーを通した
後のセロテープ面についた粉の量を目視で判定し
た。
粉落ちについては、10cm巾の紙200枚をギロチ
ンで裁断し、その時落ちた粉の量を目視で判定し
た。
(E) 作 用
インクジエツト記録媒体の従来からの課題であ
つた、インク吸収容量・速度が大きく、接着性が
良好で、しかも粉落ちが少なく、印字部分の鮮明
さ、およびベタ印字部分でのムラ、印字部分の裏
面からの視認性などが、大巾な向上を見た一つの
大きな理由は、前述したように、下層に比表面積
の小さな屈折率の大きな顔料を使用し、上層に比
表面積の大きな屈折率の小さな顔料を使用するこ
とにより可能になつたと考える。
(F) 実施例
以下に本発明の実施例を挙げて説明するがこれ
らの例に限定されるものではない。
尚、実施例に於て示す部及び％は重量部及び重
量％を意味する。
実施例 １
主屈折率が1.66（複屈折）BET比表面積2.5m2／
ｇの重質炭酸カルシウム97部、屈折率が1.57で
BET比表面積２m2／ｇのタルク３部、ポリアク
リル酸ソーダ0.4部を加え、分散後、スチレンブ
タジエンラテツクス10部、リン酸エステル化澱粉
５部、ステアリン酸カルシウム0.2部を加えて撹
拌混合し63％固形分の塗工液を得た。
この塗工液を、支持体として坪量45m2／ｇの上
質紙上に顔料塗工量が10m2／ｇになるようにブレ
ード塗工し乾燥調湿後スーパーカレンダー処理を
行ないベツク平滑度が325秒の最下層塗工紙を得
た。
一方、屈折率が1.46、BET比表面積が300m2／
ｇの合成微粒子シリカ100部、ポリビニルアルコ
ール（重合度1700、ケン化度98％以上）30部、か
らなる23％の塗工液を作製し、上記最下層塗工紙
上に、エアーナイフコーターでシリカ塗工量が20
m2／ｇとなるように塗工し乾燥調湿後スーパーカ
レンダー処理を行ないベツク平滑度120秒のイン
クジエツト記録媒体を得た。
この記録媒体の評価結果を第１表に示す。
実施例２〜14 比較例１〜10
実施例１において、最下層塗工液の白色顔料の
組成比、ベツク平滑度、塗工顔料量及び上層の顔
料組成、塗工量などを表１のごとく変えた以外
は、実施例１と同様にして、記録媒体を得た。評
価結果を第１表に示す。なお比較例１〜３の下層
の塗工液は、実施例１の塗液濃度では、粘度が高
くなり調液不可、それぞれ、50％、40％、30％の
塗液濃度で調液した。
比較例 11
実施例１において、最下層のみを塗工し仕上げ
た紙を記録媒体とした。評価結果を第１表に示
す。
比較例 12
実施例１において、最下層を塗工しなかつた以
外は実施例１と同様にして記録媒体を得た。評価
結果を第１表に示す。[Table] etc. In addition, water-based ink media include water and various water-soluble organic solvents, such as methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol,
Alkyl alcohols having 1 to 4 carbon atoms such as sec-butyl alcohol, tert-butyl alcohol and isobutyl alcohol; Amides such as dimethylformamide and dimethylacetamide; Ketones or ketone alcohols such as acetone and diacetone alcohol; tetrahydrofuran and dioxane Ethers such as polyethylene glycol, polypropylene glycol, etc.; polyalkylene glycols such as ethylene glycol, propylene glycol, butylene glycol, triethylene glycol, 1,2,6-hexanetriol, thiodiglycol, hexylene glycol, diethylene glycol, etc. Alkylene glycols having 2 to 6 alkylenes; lower alkyl ethers of polyhydric alcohols such as glycerin, ethylene glycol methyl ether, diethylene glycol methyl (or ethyl) ether, triethylene glycol monomethyl ether, and the like. Among these many water-soluble organic solvents, polyhydric alcohols such as diethylene glycol and lower alkyl ethers of polyhydric alcohols such as triethylene glycol monomethyl ether and triethylene glycol monoethyl ether are preferred. Examples of other additives include PH regulators, metal sequestrants, antifungal agents, viscosity regulators, surface tension regulators, wetting agents, surfactants, and rust preventives. Ink jet suitability was measured by the following method. The ink absorption capacity is 10% at 20°C using a 1/1 solution of polyethylene glycol (PEG No. 400)/water.
The solution was brought into contact with a fixed area of the ink-receiving layer for seconds, the excess liquid was removed with absorbent paper, the weight of the solution absorbed into the ink-receiving layer was measured, and the value calculated as the number of grams per square meter was used. To check the ink absorption speed, use a Sharp inkjet printer (IO-700) and touch the paper presser roll immediately after solid printing (about 1 second) of the red printing area (magenta + yellow), and check whether stains appear or not. It was determined by Regarding the clarity of the printed part, unevenness in the solid printed part, and visibility from the back side of the printed part (bleed-through of the printed part), use a Sharp inkjet printer (IO-700) to check the red printed part ( The recording medium after solid printing of magenta + yellow) was visually inspected. For adhesion, cellophane tape was applied to the surface of the recording medium, and the amount of powder adhering to the surface of the cellophane tape was visually determined after passing it through a pressure roller at a pressure of 10 kg/cm. Regarding powder shedding, 200 sheets of 10 cm wide paper were cut with a guillotine, and the amount of powder that fell was visually determined. (E) Function The conventional inkjet recording media has had a large ink absorption capacity and speed, good adhesion, less powder falling, sharpness of printed areas, and unevenness in solid printed areas. One of the major reasons why the visibility of the printed part from the back side has been greatly improved is, as mentioned above, by using a pigment with a high refractive index with a small specific surface area in the lower layer and a pigment with a high refractive index with a small specific surface area in the upper layer. We believe this was made possible by using a small pigment with a large refractive index. (F) Examples The present invention will be described below with reference to examples, but the invention is not limited to these examples. In addition, parts and percentages shown in Examples mean parts by weight and percentages by weight. Example 1 Principal refractive index is 1.66 (birefringence) BET specific surface area 2.5m 2 /
97 parts of heavy calcium carbonate, with a refractive index of 1.57
Add 3 parts of talc with a BET specific surface area of 2 m 2 /g and 0.4 part of sodium polyacrylate, and after dispersion, add 10 parts of styrene-butadiene latex, 5 parts of phosphoric acid esterified starch, and 0.2 parts of calcium stearate and mix with stirring.63 % solids coating solution was obtained. This coating liquid was applied with a blade to a high-quality paper with a basis weight of 45 m 2 /g as a support so that the pigment coating amount was 10 m 2 /g, and after drying and humidity control, a super calender treatment was performed to obtain a base smoothness of 325. A second bottom layer coated paper was obtained. On the other hand, the refractive index is 1.46 and the BET specific surface area is 300m 2 /
Prepare a 23% coating solution consisting of 100 parts of synthetic fine particle silica (g) and 30 parts of polyvinyl alcohol (degree of polymerization 1700, degree of saponification 98% or more), and coat the silica on the bottom coated paper with an air knife coater. Coating amount is 20
The inkjet recording medium was coated so as to have a thickness of m 2 /g, dried, and then subjected to a supercalender treatment to obtain an inkjet recording medium with a base smoothness of 120 seconds. Table 1 shows the evaluation results of this recording medium. Examples 2 to 14 Comparative Examples 1 to 10 In Example 1, the composition ratio of the white pigment in the bottom layer coating liquid, the Bekk's smoothness, the amount of coating pigment, the pigment composition of the upper layer, the amount of coating, etc. are as shown in Table 1. A recording medium was obtained in the same manner as in Example 1 except for the following changes. The evaluation results are shown in Table 1. Note that the lower layer coating solutions of Comparative Examples 1 to 3 had high viscosity at the coating solution concentration of Example 1 and could not be prepared, so they were prepared at coating solution concentrations of 50%, 40%, and 30%, respectively. Comparative Example 11 In Example 1, the paper in which only the bottom layer was coated and finished was used as a recording medium. The evaluation results are shown in Table 1. Comparative Example 12 A recording medium was obtained in the same manner as in Example 1 except that the bottom layer was not coated. The evaluation results are shown in Table 1.
【表】【table】
【表】【table】
【表】
(G) 発明の効果
第１表からも明らかなように本発明による記録
媒体はインクジエツト記録媒体に要求される非常
に高いインク吸収性・吸収速度を有すると同時
に、印字部分が鮮明であり、印字部分の裏抜け、
接着性、粉落ち等が良好であり、従来にないバラ
ンスのとれたインクジエツト記録媒体、特に高密
度・高精細なフルカラーインクジエツト記録媒体
を提供するに至つた。[Table] (G) Effects of the Invention As is clear from Table 1, the recording medium according to the present invention has extremely high ink absorbency and absorption speed required for inkjet recording media, and at the same time, the printed area is clear. Yes, there is some bleed through in the printed part,
This has led to the provision of an inkjet recording medium with good adhesion, powder removal, etc., and an unprecedented balance, especially a high-density, high-definition full-color inkjet recording medium.
Claims (1)
録画像を形成するインクジエツト記録媒体に於い
て、該記録媒体が支持体上に少なくとも２層以上
のインク受理層を有し、屈折率が1.50以上かつ
BET法による比表面積が100m2／ｇ未満の白色顔
料を主顔料として含有した下層の塗工層が顔料成
分として５−25ｇ／m2である層を有し、その上層
には屈折率が1.43−1.48かつBET法による比表面
積が100m2／ｇ以上の合成微粒子シリカを主顔料
として含有した層を少なくとも１層以上有するこ
とを特徴とするインクジエツト記録媒体。 ２ 該下層の全顔料成分100重量部に対して白色
顔料が80重量部以上で、かつ、該上層の全顔料成
分100重量部に対して合成微粒子シリカが80重量
部以上である特許請求の範囲第１項記載のインク
ジエツト記録媒体。[Scope of Claims] 1. An inkjet recording medium in which a recorded image is formed using a water-based ink containing a water-soluble dye, the recording medium having at least two or more ink-receiving layers on a support, Refractive index is 1.50 or more and
The lower coating layer contains a white pigment with a specific surface area of less than 100 m 2 /g as the main pigment by the BET method, and has a layer with a pigment component of 5-25 g/m 2 , and the upper layer has a refractive index of 1.43. -1.48 and a specific surface area of 100 m 2 /g or more by BET method. 2. Claims in which the white pigment is 80 parts by weight or more based on 100 parts by weight of the total pigment components of the lower layer, and the synthetic fine particle silica is 80 parts by weight or more based on 100 parts by weight of the total pigment components of the upper layer. The inkjet recording medium according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61089487A JPS62244689A (en) | 1986-04-17 | 1986-04-17 | Ink jet recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61089487A JPS62244689A (en) | 1986-04-17 | 1986-04-17 | Ink jet recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62244689A JPS62244689A (en) | 1987-10-26 |
| JPH0455395B2 true JPH0455395B2 (en) | 1992-09-03 |
Family
ID=13972099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61089487A Granted JPS62244689A (en) | 1986-04-17 | 1986-04-17 | Ink jet recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62244689A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09175010A (en) * | 1995-12-27 | 1997-07-08 | Tomoegawa Paper Co Ltd | Ink jet recording sheet |
| US6465086B1 (en) | 1997-05-15 | 2002-10-15 | Oji Paper Co., Ltd. | Ink jet recording material and process for producing same |
| US6696118B2 (en) * | 2000-09-27 | 2004-02-24 | Canon Kabushiki Kaisha | Recording medium and image forming method utilizing the same |
| JP5545540B2 (en) * | 2010-07-23 | 2014-07-09 | 株式会社リコー | Recording paper and image forming method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53790A (en) * | 1976-05-26 | 1978-01-06 | Mitsuo Yamaguchi | Safety device for thermal sealing machine |
| JPS5551583A (en) * | 1978-10-09 | 1980-04-15 | Ricoh Co Ltd | Ink-jet recording paper |
| JPS57107879A (en) * | 1980-12-25 | 1982-07-05 | Mitsubishi Paper Mills Ltd | Preparation of recording paper |
| JPS5816884A (en) * | 1981-07-23 | 1983-01-31 | Canon Inc | Recording medium |
| JPS58110287A (en) * | 1981-12-24 | 1983-06-30 | Mitsubishi Paper Mills Ltd | Sheet for recording |
| JPS60204390A (en) * | 1984-03-29 | 1985-10-15 | Mitsubishi Paper Mills Ltd | Ink jet recording paper |
| JPS6110483A (en) * | 1984-06-27 | 1986-01-17 | Canon Inc | Recording material |
| JPS6135986A (en) * | 1984-07-30 | 1986-02-20 | Canon Inc | Material to be recorded |
| JPS6149882A (en) * | 1984-07-27 | 1986-03-11 | Canon Inc | Recording material |
| JPS6149883A (en) * | 1984-07-27 | 1986-03-11 | Canon Inc | Recording material |
| JPS61148090A (en) * | 1984-12-21 | 1986-07-05 | Canon Inc | Ink jet recording material |
-
1986
- 1986-04-17 JP JP61089487A patent/JPS62244689A/en active Granted
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53790A (en) * | 1976-05-26 | 1978-01-06 | Mitsuo Yamaguchi | Safety device for thermal sealing machine |
| JPS5551583A (en) * | 1978-10-09 | 1980-04-15 | Ricoh Co Ltd | Ink-jet recording paper |
| JPS57107879A (en) * | 1980-12-25 | 1982-07-05 | Mitsubishi Paper Mills Ltd | Preparation of recording paper |
| JPS5816884A (en) * | 1981-07-23 | 1983-01-31 | Canon Inc | Recording medium |
| JPS58110287A (en) * | 1981-12-24 | 1983-06-30 | Mitsubishi Paper Mills Ltd | Sheet for recording |
| JPS60204390A (en) * | 1984-03-29 | 1985-10-15 | Mitsubishi Paper Mills Ltd | Ink jet recording paper |
| JPS6110483A (en) * | 1984-06-27 | 1986-01-17 | Canon Inc | Recording material |
| JPS6149882A (en) * | 1984-07-27 | 1986-03-11 | Canon Inc | Recording material |
| JPS6149883A (en) * | 1984-07-27 | 1986-03-11 | Canon Inc | Recording material |
| JPS6135986A (en) * | 1984-07-30 | 1986-02-20 | Canon Inc | Material to be recorded |
| JPS61148090A (en) * | 1984-12-21 | 1986-07-05 | Canon Inc | Ink jet recording material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62244689A (en) | 1987-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |