JP4573229B2 - Cast coated paper for inkjet recording for postcard use with glossy side and back side for address printing - Google Patents
Cast coated paper for inkjet recording for postcard use with glossy side and back side for address printing Download PDFInfo
- Publication number
- JP4573229B2 JP4573229B2 JP2005223845A JP2005223845A JP4573229B2 JP 4573229 B2 JP4573229 B2 JP 4573229B2 JP 2005223845 A JP2005223845 A JP 2005223845A JP 2005223845 A JP2005223845 A JP 2005223845A JP 4573229 B2 JP4573229 B2 JP 4573229B2
- Authority
- JP
- Japan
- Prior art keywords
- glossy
- ink
- parts
- alumina
- binder
- 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.)
- Active
Links
- 238000007639 printing Methods 0.000 title claims description 16
- 239000010410 layer Substances 0.000 claims description 60
- 238000000576 coating method Methods 0.000 claims description 51
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 46
- 239000011248 coating agent Substances 0.000 claims description 46
- 239000011230 binding agent Substances 0.000 claims description 34
- 239000000049 pigment Substances 0.000 claims description 34
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 32
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 24
- 125000002091 cationic group Chemical group 0.000 claims description 13
- 239000004925 Acrylic resin Substances 0.000 claims description 12
- 229920000178 Acrylic resin Polymers 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 239000011247 coating layer Substances 0.000 claims description 9
- 229920002050 silicone resin Polymers 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 239000000701 coagulant Substances 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 150000001639 boron compounds Chemical class 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims 1
- 239000000976 ink Substances 0.000 description 61
- 239000000123 paper Substances 0.000 description 53
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 26
- 229920005989 resin Polymers 0.000 description 17
- 239000011347 resin Substances 0.000 description 17
- 239000008119 colloidal silica Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 229920001577 copolymer Polymers 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 239000013078 crystal Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 238000005266 casting Methods 0.000 description 7
- 229920006317 cationic polymer Polymers 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- -1 silver halide Chemical class 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 229920002554 vinyl polymer Polymers 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 4
- 229920002125 Sokalan® Polymers 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 238000004040 coloring Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 238000001454 recorded image Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000004640 Melamine resin Substances 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 150000004820 halides Chemical class 0.000 description 3
- 239000001254 oxidized starch Substances 0.000 description 3
- 235000013808 oxidized starch Nutrition 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 108010076119 Caseins Proteins 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 108010073771 Soybean Proteins Proteins 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- NJSSICCENMLTKO-HRCBOCMUSA-N [(1r,2s,4r,5r)-3-hydroxy-4-(4-methylphenyl)sulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)O[C@H]1C(O)[C@@H](OS(=O)(=O)C=2C=CC(C)=CC=2)[C@@H]2OC[C@H]1O2 NJSSICCENMLTKO-HRCBOCMUSA-N 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229910021538 borax Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 239000005018 casein Substances 0.000 description 2
- 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 2
- 235000021240 caseins Nutrition 0.000 description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000006081 fluorescent whitening agent 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
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- 229940001941 soy protein Drugs 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 229920005792 styrene-acrylic resin Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 2
- 239000012463 white pigment Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- NPSJHQMIVNJLNN-UHFFFAOYSA-N 2-ethylhexyl 4-nitrobenzoate Chemical compound CCCCC(CC)COC(=O)C1=CC=C([N+]([O-])=O)C=C1 NPSJHQMIVNJLNN-UHFFFAOYSA-N 0.000 description 1
- 239000004808 2-ethylhexylester Substances 0.000 description 1
- SSONCJTVDRSLNK-UHFFFAOYSA-N 2-methylprop-2-enoic acid;hydrochloride Chemical compound Cl.CC(=C)C(O)=O SSONCJTVDRSLNK-UHFFFAOYSA-N 0.000 description 1
- QOXOZONBQWIKDA-UHFFFAOYSA-N 3-hydroxypropyl Chemical group [CH2]CCO QOXOZONBQWIKDA-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 229910002016 Aerosil® 200 Inorganic materials 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910000873 Beta-alumina solid electrolyte Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920002518 Polyallylamine hydrochloride Polymers 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 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
- 238000002441 X-ray diffraction Methods 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
- 239000006096 absorbing agent Substances 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- BVZPKXNHIPEDHB-UHFFFAOYSA-N azane;n-methylmethanamine Chemical compound N.CNC BVZPKXNHIPEDHB-UHFFFAOYSA-N 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 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
- 239000003054 catalyst Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical class C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 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
- 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
- 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
- 239000011976 maleic acid Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid group Chemical group C(\C=C/C(=O)O)(=O)O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 125000005375 organosiloxane group Chemical group 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulfur dioxide Inorganic materials O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000003232 water-soluble binding agent Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Landscapes
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Ink Jet (AREA)
Description
本発明はインクジェット記録用光沢紙に関し、特に銀塩写真並の光沢感を有し、かつ光沢面の耐擦過性に優れ、写真画質に近い印字品位の高い記録用紙に関するものである。 The present invention relates to glossy paper for ink-jet recording, and more particularly to a recording paper having glossiness similar to that of a silver salt photograph, excellent scratch resistance on a glossy surface, and high print quality close to photographic image quality.
インクジェット記録方式は、インクの液滴を吐出し、記録紙上に付着させることによりドットを形成し記録を行う方式である。近年、インクジェットプリンター、インク、記録媒体の技術的進歩により、印字品質の高い記録が可能になってきている。インクジェット記録媒体に求められる要素としては、
(a)インクの吸収、乾燥が速いこと、
(b)印字濃度が高いこと、
(c)ドットの広がりやひげ状のにじみが無いこと、
等があげられる。一般の普通紙でも一定以上のサイズ性があれば、滲みも少なくある程度の印字品質が期待できる。一方、より高い印字品質を求める場合には媒体上にインクジェットプリンターのインクに対して適性のあるインク受容層を各種基材上に設けた専用の媒体が使用される。これらインクジェット記録専用の媒体としては紙やフィルムを支持体として、顔料と結着剤を主成分とする顔料塗工層または顔料を含まない樹脂塗工層を表面に設けたものが多く使用される。
The ink jet recording method is a method in which dots are formed by discharging ink droplets and adhering onto recording paper to perform recording. In recent years, recording with high print quality has become possible due to technological advances in inkjet printers, inks, and recording media. As an element required for an inkjet recording medium,
(A) fast ink absorption and drying;
(b) High print density,
(c) No dot spread or whiskers
Etc. If ordinary plain paper has a certain size or more, it can be expected to have a certain level of print quality with little blurring. On the other hand, when a higher print quality is required, a dedicated medium in which an ink receiving layer suitable for the ink of an ink jet printer is provided on various media on the medium is used. As a medium dedicated to ink jet recording, a paper or film is used as a support, and a pigment coating layer mainly composed of a pigment and a binder or a resin coating layer containing no pigment is provided on the surface. .
インクジェット記録専用媒体はさらにその記録面の表面状態からマット調媒体と光沢媒体に分類される。銀塩写真により近い画像品質を要求する場合には後者の光沢媒体が使用される。これら光沢媒体に要求される特性としては前記した特性以外に、
(d)ドットの真円性が高く、画像再現性が良好なこと、
(e)耐水性、耐光性が良好であること、
(f)画像領域、白紙部分の光沢感が高いこと、
等があげられる。
Inkjet recording media are further classified into matte media and glossy media based on the surface condition of the recording surface. The latter glossy media is used when image quality closer to silver halide photography is required. In addition to the properties described above, the properties required for these glossy media are as follows:
(d) High roundness of dots and good image reproducibility,
(e) good water resistance and light resistance;
(f) The glossiness of the image area and the blank area is high,
Etc.
光沢媒体の製法としては(a)のインク吸収性、乾燥性を維持しながら(b)〜(f)の特性を維持するために、各種の方法が提案されているが、一般的方法はキャスト法によりインク受容層を形成し表面に光沢を付与する方法と印画紙用基材上にインク受容層を形成する方法である。 Various methods have been proposed for producing glossy media in order to maintain the properties (b) to (f) while maintaining the ink absorbency and drying properties of (a). A method of forming an ink receiving layer by a method and imparting gloss to the surface, and a method of forming an ink receiving layer on a photographic paper substrate.
一般には前者は(a)のインク吸収性が後者に比べ制御しやすいが、(d)のドット真円性、画像再現性、(f)の画像領域、白紙部分の光沢感、品位では後者に比べ劣っている。印画紙用基材は一般にRC紙(レジンコート紙)といわれるように、紙の基材上にポリエチレンのフィルム層が形成されているためにインク受容層をその表面に形成した場合、フィルム面が平滑であることからインク受容層表面も平滑で、光沢のある表面が形成しやすい。 In general, the former is easier to control the ink absorptivity of (a) than the latter, but (d) dot roundness, image reproducibility, (f) image area, glossiness of blank paper, and quality are the latter. It is inferior. As the base material for photographic paper is generally called RC paper (resin coated paper), since the polyethylene film layer is formed on the paper base material, when the ink receiving layer is formed on the surface, the film surface is Since the surface is smooth, the surface of the ink receiving layer is also smooth, and a glossy surface is easily formed.
しかし、インク吸収性をあげるために塗工量を多くする必要があり、また基材そのものが紙よりも高価であることから全体のコストは前者のキャスト法による光沢媒体に比べ高いものとなる。また、廃棄する場合には複合素材であることからリサイクルがきかないといった問題もある。 However, it is necessary to increase the coating amount in order to increase the ink absorbency, and since the base material itself is more expensive than paper, the overall cost is higher than that of the glossy medium produced by the former casting method. In addition, there is also a problem that when it is discarded, it cannot be recycled because it is a composite material.
キャスト法によるインクジェット記録用光沢紙についてはこの点有利であるが、前記した品質面での問題があり、これらの課題を解決するために各種の提案がなされている。 The glossy paper for ink-jet recording by the casting method is advantageous in this respect, but has the above-mentioned problems in quality, and various proposals have been made to solve these problems.
例えば、記録層表面の平均粗さ、光沢度及び記録紙の透気度を規定することで表面の平滑性が高く、画質の高級感に優れるインクジェット記録用紙が得られるとの提案がある(例えば、特許文献1参照)。 For example, there is a proposal that an inkjet recording paper having high surface smoothness and excellent image quality can be obtained by defining the average roughness, glossiness and air permeability of the recording paper on the surface of the recording layer (for example, , See Patent Document 1).
また、記録層表面の亀裂の大きさ及び個数を規定することによって優れた光沢感及びインク受容性を有するインクジェット記録用紙が得られるとの提案もある(例えば、特許文献2参照)。 There is also a proposal that an ink jet recording paper having excellent gloss and ink receptivity can be obtained by defining the size and number of cracks on the surface of the recording layer (see, for example, Patent Document 2).
しかしこの場合には、亀裂数が少なすぎると光沢感が増す一方インク吸収性が低下するという問題点もある。更に、パールネックレス状のコロイダルシリカを含むインクジェット記録シートの提案もある(例えば、特許文献3参照)。この場合には、パールネックレス状のコロイダルシリカを使用することで印字品質、特にインク吸収性向上には一定の効果があるが、表面強度、光沢感が必ずしも満足できるには至っていない。 However, in this case, if the number of cracks is too small, there is a problem that the glossiness increases while the ink absorbability decreases. Furthermore, there is also a proposal of an ink jet recording sheet containing a pearl necklace-shaped colloidal silica (see, for example, Patent Document 3). In this case, the use of pearl necklace-shaped colloidal silica has a certain effect in improving the printing quality, particularly the ink absorbability, but the surface strength and glossiness are not always satisfactory.
また、近年インク吸収速度が速く、銀塩写真並の光沢感を有するインクジェット記録用光沢紙としてアルミナ水和物を水溶性バインダーと混合して塗工した用紙が提案されている(例えば、特許文献4参照)。これらのインクジェット記録用光沢紙は光沢感が非常に優れているという特徴を持つが、光沢感に優れているが故に光沢表面に傷が入りやすいという欠点を持つ。例えば、葉書用途に使用する場合に裏面に宛名印刷をするが、印刷時の給紙部ガイドによる擦れ及び排紙部の吸引車との擦れにより傷が付きやすいという欠点を持っている。また、インクジェットプリンターでの宛名印刷時に、光沢面と給紙ローラーとの接触により傷が入りやすいという欠点も問題となる。 In recent years, a paper coated with a mixture of alumina hydrate and a water-soluble binder has been proposed as a glossy paper for ink-jet recording having a high ink absorption rate and a glossiness similar to that of a silver salt photograph (for example, patent document). 4). These glossy papers for ink-jet recording have the characteristic that they are very excellent in glossiness, but they have the drawback that they are easily scratched because of their excellent glossiness. For example, when used for postcard applications, address printing is performed on the back side, but there is a drawback that scratches are easily caused by rubbing by the paper feed unit guide during printing and rubbing with the suction wheel of the paper discharge unit. In addition, there is also a problem in that scratches are likely to occur due to contact between the glossy surface and the paper feed roller during address printing with an inkjet printer.
いずれにせよ、キャスト法によって製造されたインクジェット記録用光沢紙において、印画紙基材あるいはフィルム基材を用いて製造された媒体を超える画質と均一な光沢感を有し、かつ非常に優れた耐擦過性を合わせ持つ記録媒体は無いのが現状である。
本発明はキャスト法で製造されるインクジェット記録用光沢紙において、上記従来技術の問題点である、良好なインク吸収性を持ちながら、銀塩写真並の高光沢感を有し、更に光沢表面の耐擦過性にも優れ、印画紙基材あるいはフィルム基材を用いて製造された媒体に匹敵する画質と均一な光沢感を有しかつリサイクル可能な記録媒体を提供することが目的である。 In the glossy paper for ink-jet recording produced by the casting method, the present invention has a high gloss feeling similar to that of a silver salt photograph while having good ink absorbency, which is a problem of the above-described conventional technology, and further has a glossy surface. An object of the present invention is to provide a recyclable recording medium which has excellent scratch resistance, has an image quality comparable to that of a medium produced using a photographic paper substrate or a film substrate, and a uniform gloss.
本発明者等は前記目的に対して、いわゆる凝固法によるキャストコート法において、光沢発現層塗工液中に顔料としてBET比表面積が55m 2 /g〜80m 2 /gであるθ−アルミナまたは該θ−アルミナとBET比表面積が55m 2 /g〜80m 2 /gであるγ−アルミナとの混合物を含有し、かつ結着剤中にポリビニルアルコールとシラノール変性ポリビニルアルコールを含有し、該シラノール変性ポリビニルアルコールの含有量が該顔料100重量部に対して0.1〜10重量部であることによって良好な結果が得られることを見出し本発明に到達した。
本発明においては、印字品質を考慮して、前記塗工液中の結着剤の含有量が顔料100重量部に対して5〜30重量部であることが好ましい。また、前記塗工液中の結着剤中にカチオン性アクリル系樹脂を含有することでより高い光沢感を得ることができるので好ましい。更に前記塗工液中の結着剤のカチオン性アクリル系樹脂がカチオン性アクリルシリコーン樹脂であることでより光沢感が向上するので好ましく、凝固剤としてホウ素化合物を含有することで更に均一な光沢面質を得ることができるので好ましい。
The present inventors have for the above object, the cast coating method by a so-called solidification method, BET specific surface area is 55m 2 / g~80m 2 / g as pigments in glossy layer coating liquid θ- alumina or the θ- alumina and a BET specific surface area containing a mixture of γ- alumina is 55m 2 / g~80m 2 / g, and containing a polyvinyl alcohol and silanol-modified polyvinyl alcohol in the binder, the silanol-modified polyvinyl the alcohol content has reached the present invention that good results by 0.1 to 10 parts by der Rukoto respect pigment 100 parts by weight is obtained.
In the present invention, in consideration of printing quality, the content of the binder in the coating liquid is preferably 5 to 30 parts by weight with respect to 100 parts by weight of the pigment. Moreover, since a higher glossiness can be obtained by containing a cationic acrylic resin in the binder in the coating liquid, it is preferable. Further, the cationic acrylic resin of the binder in the coating liquid is preferably a cationic acrylic silicone resin, so that glossiness is further improved, and a more uniform glossy surface by containing a boron compound as a coagulant. It is preferable because quality can be obtained.
本発明のインクジェット記録用光沢紙はキャスト法で製造されたインクジェット記録用光沢紙でありながら、非常に良好な表面光沢感とインク吸収性及び耐擦過性を高いレベルでバランスさせながら、良好な発色性を有する物である。本発明では紙を基材としていることから、フィルム層を有する印画紙基材に比べ、製造コストも低く、廃棄する場合にはリサイクル可能であり資源の有効利用という観点からも好ましい。 The glossy paper for ink-jet recording of the present invention is a glossy paper for ink-jet recording manufactured by a casting method, and it has good color development while balancing a very good surface glossiness, ink absorbability and scratch resistance at a high level. It is a thing with sex. In the present invention, since paper is used as a base material, the production cost is lower than that of a photographic paper base material having a film layer, and it is recyclable when discarded, which is preferable from the viewpoint of effective use of resources.
以下、本発明を詳細に説明するが、本発明はこれらの記載に限定して解釈されない。 Hereinafter, the present invention will be described in detail, but the present invention is not construed as being limited to these descriptions.
通常キャスト法によるインクジェット光沢紙の光沢発現層塗工液顔料として球状コロイダルシリカを使用するのが一般的である。球状コロイダルシリカは表面強度が強くなる傾向があるため耐擦過性は強くなるが、インク吸収性が比較的悪い為に光沢度とインク吸収性を高いレベルでバランスさせることが非常に困難である。また、非球状コロイダルシリカとしてパールネックレス状のコロイダルシリカが知られているが、球状コロイダルシリカに比べインク吸収性は良好となるものの光沢が劣る、表面強度が弱いという問題がある。 In general, spherical colloidal silica is used as a coating liquid pigment for the glossy layer of ink jet glossy paper by a normal casting method. Spherical colloidal silica tends to have high surface strength and thus has high scratch resistance. However, since ink absorbency is relatively poor, it is very difficult to balance glossiness and ink absorbency at a high level. Further, pearl necklace-shaped colloidal silica is known as non-spherical colloidal silica, but there are problems that the ink absorbability is better than spherical colloidal silica but the gloss is inferior and the surface strength is weak.
一方、アルミナを使用することによってインク吸収性能に優れ、光沢感にも優れているインクジェット記録用光沢紙を得ることはできるが、前記したように傷が付きやすく耐擦過性についてはコロイダルシリカと比較してもかなりのレベルで劣るため、印字性能、光沢感、耐擦過性を高いレベルで維持するのが非常に困難であった。本発明の光沢発現層塗工液は顔料としてBET比表面積が55m 2 /g〜80m 2 /gであるθ−アルミナまたは該θ−アルミナとBET比表面積が55m 2 /g〜80m 2 /gであるγ−アルミナとの混合物を含有し、かつ結着剤中にシラノール変性ポリビニルアルコールを含有することが特徴であり、これにより印字性能、光沢感、耐擦過性を高いレベルで維持することが可能となる。 On the other hand, by using alumina, it is possible to obtain a glossy paper for ink-jet recording that has excellent ink absorption performance and excellent glossiness, but as described above, it is easy to be scratched and the scratch resistance is compared with colloidal silica. Even so, it is inferior at a considerable level, and it is very difficult to maintain the printing performance, glossiness, and scratch resistance at a high level. Glossy layer coating liquid of the present invention is a BET specific surface area of 55m 2 / g~80m is 2 / g theta-alumina or the theta-alumina and a BET specific surface area of the pigment in 55m 2 / g~80m 2 / g It is characterized by containing a mixture with a certain γ-alumina and containing silanol-modified polyvinyl alcohol in the binder, which makes it possible to maintain printing performance, glossiness, and scratch resistance at a high level. It becomes.
本発明に用いるアルミナ微粒子は、BET比表面積が55m 2 /g〜80m 2 /gであるθ−アルミナまたは該θ−アルミナとBET比表面積が55m 2 /g〜80m 2 /gであるγ−アルミナとの混合物であり、これらが混合されていても本発明の目的を達成することが可能である。これらアルミナの比表面積が50m2/g未満であると耐擦過性は増すが、インク吸収性能が悪くなるため好ましくない。また、150m2/gより大きい場合は、インク吸収性能は増すが、耐擦過性が劣ってくるため好ましくない。 Alumina fine particles used in the present invention, BET specific surface area of 55m 2 / g~80m 2 / g is θ- alumina or the θ- alumina and BET specific surface area is 55m 2 / g~80m 2 / g γ- alumina Even if these are mixed, the object of the present invention can be achieved. When the specific surface area of these aluminas is less than 50 m 2 / g, the scratch resistance is increased, but the ink absorption performance is deteriorated, which is not preferable. On the other hand, when it is larger than 150 m 2 / g, the ink absorption performance is increased, but the scratch resistance is inferior, which is not preferable.
本発明に用いるアルミナは種々の方法によって得られ、本発明においては、いかなる方法によって得られたものであっても、BET比表面積が55m 2 /g〜80m 2 /gであるθ−アルミナまたは該θ−アルミナとBET比表面積が55m 2 /g〜80m 2 /gであるγ−アルミナとの混合物であれば本発明に用いることができる。また、θ−アルミナもしくはγ−アルミナのθ、γはアルミナの結晶形を意味しており、X線回折により判定できる。本発明で用いるθ−アルミナまたは該θ−アルミナとγ−アルミナとの混合物の量は顔料100重量部中5〜100重量部であり、好ましくは20〜100重量部である。5重量部よりも少ないと耐擦過性が不十分となる。 Alumina used in the present invention is obtained by various methods, in the present invention, even those obtained by any method, BET specific surface area is 55m 2 / g~80m 2 / g θ- alumina or the θ- alumina and BET specific surface area can be used in the present invention if a mixture of γ- alumina is 55m 2 / g~80m 2 / g. Further, θ and γ of θ-alumina or γ-alumina mean the crystal form of alumina and can be determined by X-ray diffraction. The amount of θ-alumina or a mixture of θ-alumina and γ-alumina used in the present invention is 5 to 100 parts by weight, preferably 20 to 100 parts by weight, per 100 parts by weight of the pigment. When the amount is less than 5 parts by weight, the scratch resistance becomes insufficient.
また、本発明の光沢発現層には、本発明の効果を損なわない範囲であればBET比表面積が55m 2 /g〜80m 2 /gであるθ−アルミナまたは該θ−アルミナとBET比表面積が55m 2 /g〜80m 2 /gであるγ−アルミナとの混合物のほかに公知の顔料1種以上を適宜選定して使用することもできる。このような顔料としては、合成シリカ、気相法シリカ、α−アルミナ、β−アルミナ、σ−アルミナ、アルミナドープシリカ、球状コロイダルシリカ、パールネックレス状コロイダルシリカ、複数個の粒子がランダムに凝集した形状を持つコロイダルシリカなどが例示できるが、特に限定されるものではない。 Moreover, the glossy layer of the present invention, is as long as it does not impair the effects BET specific surface area of 55m 2 / g~80m is 2 / g theta-alumina or the theta-alumina and the BET specific surface area of the present invention 55m 2 / g~80m 2 / well of a mixture of certain γ- alumina g to appropriately select one or more known pigments can be used. As such pigments, synthetic silica, gas phase method silica, α-alumina, β-alumina, σ-alumina, alumina-doped silica, spherical colloidal silica, pearl necklace-shaped colloidal silica, a plurality of particles aggregated randomly. Examples thereof include colloidal silica having a shape, but are not particularly limited.
また、本発明においては、光沢発現層に用いる結着剤としてシラノール変性ポリビニルアルコール含有することが必要不可欠である。シラノール変性ポリビニルアルコールは無機物に対する接着性が極めて高いため、インク吸収性と光沢度を高いレベルでバランスさせながら、凝固力も強いために表面強度も高いものとすることが可能となる。シラノール変性ポリビニルアルコールの変性度及び重合度は適宜選択することができる。 In the present invention, it is indispensable to contain silanol-modified polyvinyl alcohol as a binder used for the glossy layer. Since silanol-modified polyvinyl alcohol has extremely high adhesion to inorganic substances, it can have high surface strength due to strong coagulation force while balancing ink absorbency and glossiness at a high level. The degree of modification and the degree of polymerization of the silanol-modified polyvinyl alcohol can be appropriately selected.
光沢発現層に用いる結着剤の使用量は、記録媒体の印字適性、光沢発現層の強度、塗工液の液性を考慮して決定される。通常顔料100重量部に対し5〜30重量部の範囲で添加することが好ましい。更に好ましくは10〜25重量部である。5重量部未満では塗工層の強度が劣り、30重量部を超えるとインク吸収性に悪影響を及ぼす。光沢発現層に用いる結着剤中のシラノール変性ポリビニルアルコール含有量は、顔料100重量部当たり0.1〜10重量部、好ましくは0.1〜7重量部である。0.1重量部より少ないと塗工層の強度が弱くそして10重量部より多いと光沢発現層塗工液の粘度が高くなり過ぎる。 The amount of the binder used for the glossy layer is determined in consideration of the printability of the recording medium, the strength of the glossy layer, and the liquidity of the coating liquid. Usually, it is preferably added in the range of 5 to 30 parts by weight with respect to 100 parts by weight of the pigment. More preferably, it is 10-25 weight part. If it is less than 5 parts by weight, the strength of the coating layer is inferior, and if it exceeds 30 parts by weight, the ink absorbency is adversely affected. The content of silanol-modified polyvinyl alcohol in the binder used for the glossy layer is 0.1 to 10 parts by weight, preferably 0.1 to 7 parts by weight per 100 parts by weight of the pigment. When the amount is less than 0.1 part by weight, the strength of the coating layer is weak, and when the amount is more than 10 parts by weight, the viscosity of the glossy layer coating liquid becomes too high.
また、本発明においては、光沢発現層塗工液中の結着剤中にカチオン性アクリル系樹脂を含有させるのが好ましい。このカチオン性アクリル系樹脂はキャストドラムと塗工層との密着性を高めることによって光沢感を向上させる効果がある。また、該アクリル系樹脂は透明性が高いため、塗工層の透明性を損ないにくく、画像鮮明性が良好なものを得ることができ、耐光性に優れるため記録シートとしての保存性を悪化させにくいという効果も得られる。 Moreover, in this invention, it is preferable to contain a cationic acrylic resin in the binder in a gloss expression layer coating liquid. This cationic acrylic resin has the effect of improving glossiness by enhancing the adhesion between the cast drum and the coating layer. In addition, since the acrylic resin has high transparency, it is difficult to impair the transparency of the coating layer, it is possible to obtain a good image sharpness, and the light resistance is excellent, so that the storage stability as a recording sheet is deteriorated. The effect of being difficult is also obtained.
またさらに、本発明においては、光沢発現層塗工液の結着剤中のカチオン性アクリル系樹脂がカチオン性アクリルシリコーン樹脂であることが好ましい。カチオン性アクリルシリコーン樹脂は更にドラム密着性に優れるため、高光沢感を有しながら、耐擦過性を更に優れたものにすることが可能となる。 Furthermore, in the present invention, the cationic acrylic resin in the binder of the glossy layer coating liquid is preferably a cationic acrylic silicone resin. Since the cationic acrylic silicone resin is further excellent in drum adhesion, it becomes possible to further improve the scratch resistance while having a high gloss feeling.
カチオン性アクリルシリコーン樹脂としては、例えばアクリル酸系重合体とオルガノポリシロキサンを反応させることにより調整したブロック重合体又はグラフト重合体がある。このオルガノシロキサンとしては、−OH官能基を有する線状重合体があり、下記式の化合物を挙げることが出来る:
HO−Si(CH3)2−O−(Si(CH3)2−O)n−Si(CH3)2−OH
(式中、nは10〜5000の数である)
前記アクリル酸系重合体は、(メタ)アクリル酸を含めたα,β−不飽和酸もしくはそのエステルなどのモノマーを単独でまたは相互にまたはコモノマーと重合させて得られた重合体又は共重合体である。該α、β−不飽和酸もしくはそのエステルとしては、アクリル酸、メタクリル酸、およびそれらのメチルエステル、エチルエステル、ブチルエステル、ステアリルエステル、2−エチルヘキシルエステル、2−ヒドロキシエチルヘキシルエステル、3−ヒドロキシプロピルエステルなどを例示することが出来る。また、該α、β−不飽和酸もしくはそのエステルと重合できるコモノマーは、マレイン酸、イタコン酸、フマル酸、スチレン、α−メチルスチレン、酢酸ビニル、プロピオン酸ビニルなどである。
Examples of the cationic acrylic silicone resin include a block polymer or a graft polymer prepared by reacting an acrylic acid polymer with an organopolysiloxane. The organosiloxane includes a linear polymer having an —OH functional group, and can include a compound of the following formula:
HO-Si (CH 3) 2 -O- (Si (CH 3) 2 -O) n -Si (CH 3) 2 -OH
(Where n is a number between 10 and 5000)
The acrylic acid polymer is a polymer or copolymer obtained by polymerizing monomers such as α, β-unsaturated acid or its ester including (meth) acrylic acid alone or with each other or with a comonomer. It is. Examples of the α, β-unsaturated acid or ester thereof include acrylic acid, methacrylic acid, and methyl ester, ethyl ester, butyl ester, stearyl ester, 2-ethylhexyl ester, 2-hydroxyethylhexyl ester, and 3-hydroxypropyl. An ester etc. can be illustrated. Further, the comonomer that can be polymerized with the α, β-unsaturated acid or its ester is maleic acid, itaconic acid, fumaric acid, styrene, α-methylstyrene, vinyl acetate, vinyl propionate, or the like.
更に、結着剤としてのシラノール変性ポリビニルアルコールと併用出来る結着剤としては、ポリビニルアルコール、ポリビニルアセタール、酸化澱粉、エーテル化澱粉、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、カゼイン、ゼラチン、大豆タンパク、ポリエチレンイミド系樹脂、ポリビニルピロヒドリン系樹脂、ポリアクリル酸またはその共重合体、無水マレイン酸共重合体、アクリルアミド系樹脂、アクリル酸エステル系樹脂、ポリアミド系樹脂、ポリウレタン系樹脂、ポリエステル系樹脂、ポリビニルブチラール系樹脂、アルキッド樹脂、エポキシ系樹脂、エピクロルヒドリン系樹脂、尿素樹脂、メラミン樹脂、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、アクリル酸エステル、メタアクリル酸エステルの重合体または共重合体等のアクリル系重合体ラテックス類、スチレン-アクリル樹脂、エチレン-酢酸ビニル共重合体等のビニル系重合体ラテックス類の樹脂類を例示することができるが、本発明の効果を損なわない範囲であれば特に限定されるものではない。 In addition, binders that can be used in combination with silanol-modified polyvinyl alcohol as a binder include polyvinyl alcohol, polyvinyl acetal, oxidized starch, etherified starch, carboxymethylcellulose, hydroxyethylcellulose, casein, gelatin, soy protein, and polyethyleneimide resin. , Polyvinylpyrohydrin resins, polyacrylic acid or copolymers thereof, maleic anhydride copolymers, acrylamide resins, acrylate resins, polyamide resins, polyurethane resins, polyester resins, polyvinyl butyral resins , Alkyd resin, epoxy resin, epichlorohydrin resin, urea resin, melamine resin, styrene-butadiene copolymer, methyl methacrylate-butadiene copolymer, acrylic ester, meta Examples include acrylic polymer latexes such as a polymer or copolymer of a crylate ester, and resins of vinyl polymer latexes such as a styrene-acrylic resin and an ethylene-vinyl acetate copolymer. If it is a range which does not impair the effect of this invention, it will not specifically limit.
更に、光沢発現層にはインクジェット記録用インクを定着させるためのカチオン性ポリマー、離型剤、分散剤、増粘剤、防腐剤、消泡剤、着色染料、着色顔料、蛍光増白剤、耐水化剤、レべリング剤、酸化防止剤、紫外線吸収剤等の添加剤を適宜選定して添加することができる。 Further, the glossy layer has a cationic polymer for fixing the ink for ink jet recording, a release agent, a dispersant, a thickener, an antiseptic, an antifoaming agent, a coloring dye, a coloring pigment, a fluorescent whitening agent, water resistance. Additives such as an agent, a leveling agent, an antioxidant, and an ultraviolet absorber can be appropriately selected and added.
本発明の光沢発現層を形成する塗工液の塗工法としてはエアーナイフ、ロールコーター、リバースロールコーター、バーコーター、コンマコーター、ブレードコーター等が公知の塗工機が用いられる。光沢発現層の塗工量は固形分換算で3〜40g/m2、好ましくは5〜30g/m2の範囲が好ましい。塗工量が40g/m2を超えると生産性が劣り、塗工量が3g/m2より少ない場合には十分な光沢面が形成しづらい。 As a coating method of the coating liquid for forming the glossy layer of the present invention, known coating machines such as an air knife, a roll coater, a reverse roll coater, a bar coater, a comma coater, and a blade coater are used. The coating amount of the glossy layer is 3~40g / m 2 in terms of solid content, preferably in the range of 5 to 30 g / m 2. When the coating amount exceeds 40 g / m 2 , the productivity is inferior, and when the coating amount is less than 3 g / m 2 , it is difficult to form a sufficiently glossy surface.
光沢発現層は、公知のキャストコート法により形成する。キャストコート法には、ウエット法、凝固法、リウエット法が知られており、本発明においては凝固法が好ましい。凝固法は、光沢発現層を塗工し湿潤状態にあるうちに凝固液を塗布して凝固処理してキャストドラムに圧接する方法である。凝固処理においては、塗工層の結着剤成分と効果的に凝固する物を選定することが重要であり、本発明においてはホウ素化合物が好ましい。更に好ましいのはホウ酸ナトリウムである。なお、凝固剤にインクを定着させるためのカチオン性ポリマーを添加することも可能である。また、塗工から凝固剤を付与するまでの時間、凝固剤を付与してキャストドラムに到達するまでの時間、キャストドラム温度、圧着する際の圧力、ライン速度を調整することでより光沢度の高い光沢発現層が形成できる。これらの諸条件については、使用する設備、光沢発現層を形成する塗工液に応じて最適条件を求めることで適正化する必要がある。 The gloss developing layer is formed by a known cast coating method. As the cast coating method, a wet method, a solidification method, and a rewetting method are known. In the present invention, the solidification method is preferable. The coagulation method is a method in which a gloss-expressing layer is applied and coated with a coagulating liquid while it is in a wet state, subjected to coagulation treatment and pressed against a cast drum. In the coagulation treatment, it is important to select a material that effectively coagulates with the binder component of the coating layer. In the present invention, a boron compound is preferable. More preferred is sodium borate. It is also possible to add a cationic polymer for fixing the ink to the coagulant. By adjusting the time from application to application of the coagulant, the time from application of the coagulant to reaching the cast drum, the temperature of the cast drum, the pressure during crimping, and the line speed A high glossy layer can be formed. About these conditions, it is necessary to optimize by calculating | requiring optimal conditions according to the installation to be used and the coating liquid which forms a gloss expression layer.
また、キャスト処理後にマシンカレンダー、ソフトカレンダー、スーパーカレンダー等のカレンダー処理を行っても良いし、カール調整のため、裏面に水やカール調整剤を塗布したり、加湿したりしてカール調整を行うこともできる。 In addition, calendar processing such as machine calendar, soft calendar, super calendar, etc. may be performed after casting, and for curl adjustment, water or curl adjuster is applied on the back surface or humidified to adjust the curl. You can also.
本発明のインクジェット記録用光沢紙は、光沢発現層の下に1層以上のインク受容層を設ける。インク受容層は白色顔料と結着剤成分とから構成されるものである。 In the glossy paper for ink jet recording of the present invention, one or more ink receiving layers are provided under the glossy expression layer. The ink receiving layer is composed of a white pigment and a binder component.
インク受容層に用いる顔料としては公知の白色顔料を1種以上含むものであり、例えば、カオリン、タルク、炭酸カルシウム、炭酸マグネシウム、硫酸バリウム、硫酸カルシウム、二酸化チタン、酸化亜鉛、硫酸亜鉛、炭酸亜鉛、珪酸カルシウム、珪酸アルミニウム、珪酸マグネシウム、珪藻土、水酸化アルムニウム、水酸化マグネシウム、サチンホワイト、合成シリカ、コロイダルシリカ、アルミナ等の白色無機顔料やアクリル、スチレン、エチレン、塩化ビニル、ナイロンなどの有機顔料が挙げられる。 The pigment used in the ink receiving layer contains at least one known white pigment, such as kaolin, talc, calcium carbonate, magnesium carbonate, barium sulfate, calcium sulfate, titanium dioxide, zinc oxide, zinc sulfate, zinc carbonate. White inorganic pigments such as calcium silicate, aluminum silicate, magnesium silicate, diatomaceous earth, aluminum hydroxide, magnesium hydroxide, satin white, synthetic silica, colloidal silica and alumina, and organic pigments such as acrylic, styrene, ethylene, vinyl chloride and nylon Is mentioned.
本発明で用いられるインク受容層の結着剤はポリビニルアルコール、ポリビニルアセタール、酸化澱粉、エーテル化澱粉、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、カゼイン、ゼラチン、大豆タンパク、ポリエチレンイミド系樹脂、ポリビニルピロヒドリン系樹脂、ポリアクリル酸またはその共重合体、無水マレイン酸共重合体、アクリルアミド系樹脂、アクリル酸エステル系樹脂、ポリアミド系樹脂、ポリウレタン系樹脂、ポリエステル系樹脂、ポリビニルブチラール系樹脂、アルキッド樹脂、エポキシ系樹脂、エピクロルヒドリン系樹脂、尿素樹脂、メラミン樹脂、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、アクリル酸エステル、メタアクリル酸エステルの重合体または共重合体等のアクリル系重合体ラテックス類、エチレン-酢酸ビニル共重合体等のビニル系重合体ラテックス類の樹脂類が例示され、単独または併用して用いられる。結着剤の使用量は、記録媒体の印字適性、インク受容層の強度、塗料の液性を考慮して決定される。通常顔料重量に対し1〜200重量%、好ましくは5〜100重量%程度の範囲で添加される。 The binder of the ink receiving layer used in the present invention is polyvinyl alcohol, polyvinyl acetal, oxidized starch, etherified starch, carboxymethyl cellulose, hydroxyethyl cellulose, casein, gelatin, soy protein, polyethylene imide resin, polyvinyl pyrohydrin resin , Polyacrylic acid or its copolymer, maleic anhydride copolymer, acrylamide resin, acrylate resin, polyamide resin, polyurethane resin, polyester resin, polyvinyl butyral resin, alkyd resin, epoxy resin , Epichlorohydrin resin, urea resin, melamine resin, styrene-butadiene copolymer, methyl methacrylate-butadiene copolymer, acrylic acid ester, methacrylic acid ester polymer or copolymer, etc. Acrylic polymer latexes, ethylene - the resins of the vinyl polymer latexes such as vinyl acetate copolymer exemplified, used alone or in combination. The amount of the binder used is determined in consideration of the printability of the recording medium, the strength of the ink receiving layer, and the liquid property of the paint. Usually, it is added in an amount of about 1 to 200% by weight, preferably about 5 to 100% by weight, based on the pigment weight.
本発明の前記塗料において、上記、顔料、結着剤類以外にカチオン性ポリマーを添加することが好ましい。カチオン性ポリマーの作用としては、インク中に使用されている染料中のアニオン成分と反応し水に不溶な塩を形成することから、インクを定着させ、耐水性が向上する。このようなカチオン性ポリマーとしてはポリエチレンイミン、エピクロルヒドリン変性ポリアルキルアミン、ポリアミンポリアミドエピクロルヒドリン、ジメチルアミンアンモニアエピクロルヒドリン、ポリビニルベンジルトリメチルアンモニウムハライド、ポリジアクリルジメチルアンモニウムハライド、ポリジメチルアミノエチルメタクリレート塩酸塩、ポリビニルピリジウムハライド、カチオン性ポリアクリルアミド、カチオン性ポリスチレン共重合体、ジアリルジメチルアンモニウムクロライド重合物、ジアリルジメチルアンモニウムクロライド二酸化硫黄共重合物、ジアリルジメチルアンモニウムクロライドアミド共重合物、ジシアンジアミドホルマリン重縮合物、ジシアンジアミドジエチレントリアミン重縮合物、ポリアリルアミン、ポリアリルアミン塩酸塩、ポリアクリルアミド系樹脂、ポリアミドエポキシ樹脂、メラミン樹脂酸コロイド、尿素系樹脂、カチオン変性ポリビニルアルコール、アミノ酸型両性界面活性剤、ベタイン型化合物、その他第4級アンモニウム塩類及びポリアミン等が用いられる。添加量は特に限定されないが、顔料100重量部に対し1〜50重量部程度の範囲で使用される。 In the paint of the present invention, it is preferable to add a cationic polymer in addition to the pigment and the binder. The action of the cationic polymer reacts with an anionic component in the dye used in the ink to form a salt that is insoluble in water, thereby fixing the ink and improving the water resistance. Such cationic polymers include polyethyleneimine, epichlorohydrin-modified polyalkylamine, polyamine polyamide epichlorohydrin, dimethylamine ammonia epichlorohydrin, polyvinylbenzyltrimethylammonium halide, polydiacryldimethylammonium halide, polydimethylaminoethyl methacrylate hydrochloride, polyvinylpyridium halide. , Cationic polyacrylamide, cationic polystyrene copolymer, diallyldimethylammonium chloride polymer, diallyldimethylammonium chloride sulfur dioxide copolymer, diallyldimethylammonium chloride amide copolymer, dicyandiamide formalin polycondensate, dicyandiamide diethylenetriamine polycondensate , Polyallylua , Polyallylamine hydrochloride, polyacrylamide resin, polyamide epoxy resin, melamine resin acid colloid, urea resin, cation-modified polyvinyl alcohol, amino acid type amphoteric surfactant, betaine type compound, other quaternary ammonium salts and polyamines, etc. Is used. Although the addition amount is not particularly limited, it is used in the range of about 1 to 50 parts by weight with respect to 100 parts by weight of the pigment.
その他の添加剤としては、必要に応じて消泡剤、潤滑剤、分散剤、湿潤剤、蛍光増白剤、着色染料、着色顔料、増粘剤、防腐剤、耐水化剤、紫外線吸収剤、酸化防止剤等を使用できる。 Other additives include antifoaming agents, lubricants, dispersants, wetting agents, fluorescent whitening agents, coloring dyes, coloring pigments, thickeners, preservatives, water-proofing agents, UV absorbers, as necessary. An antioxidant etc. can be used.
本発明のインク受容層を形成する塗料の塗工法としてはエアーナイフ、ロールコーター、バーコーター、コンマコーター、ブレードコーター等が公知の塗工機が用いられる。塗工量は特に限定されないが、塗工量が少な過ぎる場合はインク吸収性が劣ることから、固形分換算で3g/m2以上とすることが好ましい。 As a coating method of the coating material for forming the ink receiving layer of the present invention, known coating machines such as an air knife, a roll coater, a bar coater, a comma coater, and a blade coater are used. The coating amount is not particularly limited, but if the coating amount is too small, the ink absorbability is inferior, so that it is preferably 3 g / m 2 or more in terms of solid content.
また、インク受容層を塗工後に一定の平滑性を出すためにスーパーカレンダー、マシンカレンダー、ソフトカレンダー等の公知のカレンダー装置を用いることも可能である。 It is also possible to use a known calendar device such as a super calendar, a machine calendar, or a soft calendar in order to give a certain smoothness after coating the ink receiving layer.
本発明で使用する基材としては、通常の上質紙、中質紙、白板紙等の紙基材が用いられる。燃料としてリサイクルされる場合を考慮し原料パルプとしては塩素含有量の少ないECF(無塩素ガス漂白)パルプまたはTCE(無塩素漂白)パルプの使用が望ましい。 As the base material used in the present invention, a normal paper base material such as high-quality paper, medium-quality paper, and white paperboard is used. Considering the case of recycling as a fuel, it is desirable to use ECF (chlorine-free gas bleached) pulp or TCE (chlorine-free bleached) pulp having a low chlorine content as raw material pulp.
キャストコート時における塗料の過度の浸透を押さえるために、サイズプレスで澱粉、ポリビニルアルコール等の水溶性高分子を塗工した原紙を使用することが好ましい。 In order to suppress excessive penetration of the paint during cast coating, it is preferable to use a base paper coated with a water-soluble polymer such as starch or polyvinyl alcohol by a size press.
実施例:
以下、実施例を挙げて本発明を更に詳述するが、本発明はこれらの例に限定されるものではない。また、実施例において示す「部」及び「%」は特に明示しない限り固形重量部および固形重量%を示す。
Example:
EXAMPLES Hereinafter, although an Example is given and this invention is further explained in full detail, this invention is not limited to these examples. In the examples, “parts” and “%” indicate solid parts by weight and solids% by weight unless otherwise specified.
酸化澱粉で表面処理した坪量160g/m2の上質紙に、合成シリカ(ミズカシルP−78A、水沢化学工業社製)100部、結着剤としてポリビニルアルコール(PVA117:クラレ社製)10部、エチレン−酢酸ビニル(ポリゾールEVA AD−6:昭和高分子社製)40部、カチオンポリマー(パピオゲンP−105:センカ社製)30部を用い、固形分16%の塗料をエアーナイフコーターで絶乾塗工量10g/m2となるように塗工乾燥してインク受容層を塗工した。次いで、光沢発現層塗工液の顔料として、BET比表面積55m2/gのアルミナ(PG−003、結晶形−γ、θ混合:CABOT社製)100部、結着剤としてシラノール変性ポリビニルアルコール(R−1130:クラレ社製)5部、ポリビニルアルコール(PVA420:クラレ社製)10部、インク定着剤としてカチオン性ポリマー(スミレーズレジン1001:住友化学工業社製)10部、離型剤としてポリエチレンエマルジョン(SNコート287:サンノプコ社製)1部を用いて、固形分20%の塗工液を得た。この塗工液をエアーナイフコーターで片面当たりの絶乾塗工量10g/m2となるように塗工し、次いでホウ酸ナトリウム3%水溶液を塗布して凝固処理を行ったのち、得られた塗工層表面が湿潤状態にあるうちに表面温度100℃のキャストドラムに圧着し、インクジェット記録用光沢紙を作成した。
[例(参考例)2]
On high-quality paper having a basis weight of 160 g / m 2 surface-treated with oxidized starch, 100 parts of synthetic silica (Mizukasil P-78A, manufactured by Mizusawa Chemical Co., Ltd.), 10 parts of polyvinyl alcohol (PVA117: manufactured by Kuraray Co., Ltd.) as a binder, Using 40 parts of ethylene-vinyl acetate (Polysol EVA AD-6: manufactured by Showa Polymer Co., Ltd.) and 30 parts of cationic polymer (Papiogen P-105: manufactured by Senka Co., Ltd.), the paint having a solid content of 16% was completely dried with an air knife coater. The ink receiving layer was applied and dried so that the coating amount was 10 g / m 2 . Subsequently, 100 parts of alumina having a BET specific surface area of 55 m 2 / g (PG-003, crystal form-γ, θ mixture: manufactured by CABOT) as a pigment of the glossy layer coating liquid, and silanol-modified polyvinyl alcohol (as a binder) R-1130: manufactured by Kuraray Co., Ltd.) 5 parts, polyvinyl alcohol (PVA420: manufactured by Kuraray Co., Ltd.) 10 parts, cationic polymer as an ink fixing agent (Smiles Resin 1001: manufactured by Sumitomo Chemical Co., Ltd.), polyethylene as a release agent A coating solution having a solid content of 20% was obtained by using 1 part of an emulsion (SN coat 287: manufactured by San Nopco). This coating solution was applied with an air knife coater so as to have an absolutely dry coating amount of 10 g / m 2 per side, and then solidified by applying a 3% aqueous solution of sodium borate to obtain a coating solution. While the coating layer surface was in a wet state, it was pressure-bonded to a cast drum having a surface temperature of 100 ° C. to prepare glossy paper for ink jet recording.
[ Example (reference example) 2]
実施例1において光沢発現層塗工液の顔料としてBET比表面積150m2/gのアルミナ(AKP−G015、結晶形−γ型:住友化学工業社製)100部とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 As described in Example 1, except that 100 parts of alumina (AKP-G015, crystal form-γ type: manufactured by Sumitomo Chemical Co., Ltd.) having a BET specific surface area of 150 m 2 / g was used as the pigment of the glossy layer coating liquid in Example 1. A glossy paper for inkjet recording was prepared under the same conditions.
実施例1において光沢発現層塗工液の顔料としてBET比表面積80m2/gのアルミナ(AKP−G008、結晶形−θ型:住友化学工業社製)100部とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 As described in Example 1, except that 100 parts of alumina having a BET specific surface area of 80 m 2 / g (AKP-G008, crystal form-θ type: manufactured by Sumitomo Chemical Co., Ltd.) was used as the pigment of the glossy layer coating liquid in Example 1. A glossy paper for inkjet recording was prepared under the same conditions.
実施例1において光沢発現層塗工液の結着剤として、シラノール変性ポリビニルアルコール(R−1130:クラレ社製)5部、ポリビニルアルコール(PVA420:クラレ社製)25部、とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 Example 1 except that the binder for the glossy layer coating liquid in Example 1 was 5 parts of silanol-modified polyvinyl alcohol (R-1130: manufactured by Kuraray Co., Ltd.) and 25 parts of polyvinyl alcohol (PVA420: manufactured by Kuraray Co., Ltd.). A glossy paper for ink-jet recording was prepared under the conditions described in 1.
実施例1において光沢発現層塗工液の結着剤として、シラノール変性ポリビニルアルコール(R−1130:クラレ社製)5部、ポリビニルアルコール(PVA420:クラレ社製)10部、カチオン性アクリル系樹脂(ビニブラン2580:日信化学工業社製)10部とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 In Example 1, as a binder for the glossy layer coating liquid, 5 parts of silanol-modified polyvinyl alcohol (R-1130: manufactured by Kuraray Co., Ltd.), 10 parts of polyvinyl alcohol (PVA420: manufactured by Kuraray Co., Ltd.), cationic acrylic resin ( A glossy paper for ink-jet recording was prepared under the same conditions as described in Example 1 except that 10 parts (Viniblanc 2580: manufactured by Nissin Chemical Industry Co., Ltd.) were used.
実施例1において光沢発現層塗工液の結着剤として、シラノール変性ポリビニルアルコール(R−1130:クラレ社製)5部、ポリビニルアルコール(PVA420:クラレ社製)10部、カチオン性アクリル系樹脂(ビニブラン2687:日信化学工業社製)10部とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 In Example 1, as a binder for the glossy layer coating liquid, 5 parts of silanol-modified polyvinyl alcohol (R-1130: manufactured by Kuraray Co., Ltd.), 10 parts of polyvinyl alcohol (PVA420: manufactured by Kuraray Co., Ltd.), cationic acrylic resin ( A glossy paper for ink-jet recording was prepared under the same conditions as described in Example 1 except that 10 parts (Viniblanc 2687: manufactured by Nissin Chemical Industry Co., Ltd.) were used.
実施例1において光沢発現層塗工液の結着剤として、シラノール変性ポリビニルアルコール(R−1130:クラレ社製)5部、ポリビニルアルコール(PVA420:クラレ社製)10部、カチオン性スチレン−アクリル樹脂(パスコールJK718:明成化学工業社製)10部とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 In Example 1, as a binder of the glossy layer coating liquid, 5 parts of silanol-modified polyvinyl alcohol (R-1130: manufactured by Kuraray Co., Ltd.), 10 parts of polyvinyl alcohol (PVA420: manufactured by Kuraray Co., Ltd.), cationic styrene-acrylic resin Glossy paper for ink-jet recording was prepared under the same conditions as described in Example 1 except that 10 parts (Passcoal JK718: manufactured by Meisei Chemical Co., Ltd.) were used.
実施例1において光沢発現層塗工液の結着剤として、シラノール変性ポリビニルアルコール(R−1130:クラレ社製)5部、ポリビニルアルコール(PVA420:クラレ社製)10部、カチオン性アクリルシリコーン樹脂(アクアブリッド922:ダイセル化学工業社製)10部とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 In Example 1, as a binder for the glossy layer coating liquid, 5 parts of silanol-modified polyvinyl alcohol (R-1130: manufactured by Kuraray Co., Ltd.), 10 parts of polyvinyl alcohol (PVA420: manufactured by Kuraray Co., Ltd.), cationic acrylic silicone resin ( A glossy paper for ink-jet recording was prepared under the same conditions as described in Example 1 except that 10 parts (Aquabrid 922: manufactured by Daicel Chemical Industries, Ltd.) were used.
実施例1において光沢発現層塗工液の顔料として、BET比表面積55m2/gのアルミナ(PG−003、結晶形−γ、θ混合:CABOT社製)80部、気相法シリカ(アエロジル200:日本アエロジル社製)20部とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 In Example 1, 80 parts of alumina (PG-003, crystal form-γ, θ mixture: manufactured by CABOT) having a BET specific surface area of 55 m 2 / g was used as a pigment of the glossy layer coating liquid, gas phase method silica (Aerosil 200). : Nippon Aerosil Co., Ltd.) Glossy paper for ink jet recording was prepared under the same conditions as described in Example 1 except that 20 parts were used.
実施例1において光沢発現層塗工液の顔料としてBET比表面積220m2/gのアルミナ(TM−300、結晶形−γ型:大明化学工業社製)100部とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 As described in Example 1, except that 100 parts of alumina having a BET specific surface area of 220 m 2 / g (TM-300, crystal form-γ type: manufactured by Daimei Chemical Co., Ltd.) was used as the pigment of the glossy layer coating liquid in Example 1. A glossy paper for inkjet recording was prepared under the same conditions.
実施例1において光沢発現層塗工液の顔料としてBET比表面積10m2/gのアルミナ(AKP−30、結晶形−α型:住友化学工業社製)100部とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 As described in Example 1, except that 100 parts of alumina (AKP-30, crystal form-α type: manufactured by Sumitomo Chemical Co., Ltd.) having a BET specific surface area of 10 m 2 / g was used as the pigment of the glossy layer coating liquid in Example 1. A glossy paper for inkjet recording was prepared under the same conditions.
実施例1において光沢発現層塗工液の顔料としてBET比表面積275m2/gのアルミナ(カタロイド AP−1、結晶形−擬ベーマイト型:触媒化成社製)100部とした以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 In Example 1, except that 100 parts of alumina having a BET specific surface area of 275 m 2 / g (cataloid AP-1, crystal form-pseudo boehmite type: manufactured by Catalyst Kasei Co., Ltd.) was used as the pigment of the glossy layer coating liquid in Example 1. A glossy paper for ink jet recording was prepared under the conditions as described.
実施例1においてシラノール変性ポリビニルアルコールを添加しなかったこと以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 A glossy paper for inkjet recording was prepared under the same conditions as described in Example 1 except that no silanol-modified polyvinyl alcohol was added in Example 1.
実施例1においてインク受容層を設けなかったこと以外は実施例1に記載した通りの条件でインクジェット記録用光沢紙を作成した。 A glossy paper for ink-jet recording was prepared under the same conditions as described in Example 1 except that the ink receiving layer was not provided in Example 1.
上記の実施例及び比較例で得られたインクジェット記録用光沢紙について以下の試験を実施し、評価結果を表1に示した。 The glossy paper for ink jet recording obtained in the above examples and comparative examples was subjected to the following tests, and the evaluation results are shown in Table 1.
(1)画像鮮明性:
ISO標準画像(ISO/JIS-SCID高精細カラーデジタル標準画像データ、画像の名称:ポートレート、画像の識別番号:N1)をセイコーエプソン社製インクジェットプリンター「PM−900C」を用い印字した。印字した画像を目視により評価した。
◎:記録画像が非常に鮮明でコントラストがはっきりしている。
○:記録画像が鮮明でコントラストがはっきりしている。
△:記録画像が鮮明であるがコントラストがはっきりしなく、色が沈んでいて劣る。
×:記録画像が不鮮明で、色が沈んでいて劣る。
(1) Image clarity:
An ISO standard image (ISO / JIS-SCID high-definition color digital standard image data, image name: portrait, image identification number: N1) was printed using an ink jet printer “PM-900C” manufactured by Seiko Epson Corporation. The printed image was visually evaluated.
A: The recorded image is very clear and the contrast is clear.
○: The recorded image is clear and the contrast is clear.
Δ: The recorded image is clear but the contrast is not clear and the color is sunk and inferior.
X: The recorded image is unclear and the color is sunk and inferior.
(2)インク吸収性:
セイコーエプソン社製インクジェットプリンター「PM−900C」を用いCMYK及びRGBのベタ(100%濃度)及び文字を印字した。ベタ部の各色の境界及び文字のにじみの程度を目視により評価した。
◎:境界がくっきりしてにじみが全く無く、文字が鮮明である。
○:境界のにじみが目立たず、文字が鮮明である。
△:境界のにじみが目立ち、文字が不鮮明で実用上問題がある。
×:境界のにじみがひどく、文字が判別できなくなり実用上不可。
(2) Ink absorbability:
CMYK and RGB solid (100% density) and characters were printed using an ink jet printer “PM-900C” manufactured by Seiko Epson Corporation. The boundary of each color of the solid portion and the degree of blurring of the characters were visually evaluated.
A: The border is clear, there is no blur, and the characters are clear.
○: The blurring of the boundary is not conspicuous and the characters are clear.
(Triangle | delta): The blur of a boundary is conspicuous, a character is unclear, and there exists a problem practically.
X: The blurring of the boundary is severe, and the character cannot be identified, so that it is not practical.
(3)写像性(入反射角度60°):
光沢表面の鏡面性を評価するために写像性を測定した。写像性はJIS H8686−2:1999「アルミニウム及びアルミニウム合金の陽極酸化皮膜の写像性試験方法−第2部:機器測定法」に準じて、光学くし巾2mmにて、ここでは入反射角度60°で、写像性測定器(ICM-1T:スガ試験機社製)にて測定した。評価としては、写像性が55%以上は反射した像が鮮明に写り、光沢感に優れている。55%未満では反射した像が不鮮明に写り、光沢感に劣る。
(3) Image clarity (incidence / reflection angle 60 °):
The image clarity was measured to evaluate the specularity of the glossy surface. The image clarity is in accordance with JIS H8866-2: 1999 “Image clarity test method for anodized films of aluminum and aluminum alloys—Part 2: Instrument measurement method”, with an optical comb width of 2 mm, and here an incident reflection angle of 60 °. Then, it measured with the image clarity measuring device (ICM-1T: manufactured by Suga Test Instruments Co., Ltd.). As an evaluation, when the image clarity is 55% or more, the reflected image is clearly visible, and the glossiness is excellent. If it is less than 55%, the reflected image appears unclear and the glossiness is inferior.
(4)光沢表面の耐擦過性:
オフセット印刷機(LITHRON40、KOMORI社製)にインクジェット記録用紙を20枚セットして、8000枚/時の印刷速度で裏面側の印刷を行った際に発生した、光沢表面の擦り傷の度合いを目視評価した。
◎:擦り傷が全く無く良好である。
○:擦り傷が僅かに認められる。
△:擦り傷が明らかに認められ、劣る。
×:擦り傷が著しく認められ、劣る。
(4) Scratch resistance of glossy surface:
Visual evaluation of the degree of abrasion on the glossy surface that occurred when 20 sheets of inkjet recording paper were set on an offset printing machine (LITHRON 40, manufactured by KOMORI) and printing on the back side was performed at a printing speed of 8000 sheets / hour. did.
(Double-circle): There is no scratch and it is favorable.
○: Scratches are slightly observed.
Δ: Scratches are clearly recognized and inferior.
X: Scratch is remarkably recognized and inferior.
表1から明らかなように、1層以上のインク受容層上に設けられた光沢発現層が顔料としてBET比表面積が55m 2 /g〜80m 2 /gであるθ−アルミナまたは該θ−アルミナとBET比表面積が55m 2 /g〜80m 2 /gであるγ−アルミナとの混合物を含有し、かつ結着剤中にシラノール変性ポリビニルアルコールを含有している実施例1及び3〜9は、比較例1〜5に比べて印字性能と光沢感及び耐擦過性に優れていることが判る。 As it is evident from Table 1, BET specific surface area as glossy layer is a pigment provided on one or more ink receiving layers and the θ- alumina or the θ- alumina is 55m 2 / g~80m 2 / g implementation BET specific surface area is silanol modified polyvinyl alcohol in 55m 2 / g~80m contained a mixture of some γ- alumina 2 / g, and a binder examples 1 and 3-9, Comparative It turns out that it is excellent in printing performance, glossiness, and abrasion resistance compared with Examples 1-5.
表1から以下のことが判る。顔料としてBET比表面積が55m 2 /g〜80m 2 /gであるθ−アルミナまたは該θ−アルミナとBET比表面積が55m 2 /g〜80m 2 /gであるγ−アルミナとの混合物を光沢発現層塗工液に含有しそして結着剤中にシラノール変性ポリビニルアルコールを含有する本発明の実施例1及び3〜9の場合には、光沢表面に擦り傷が全くないかまたは僅かしかなく、画像鮮明性、インク吸収性および写像性も良好である。これに対して、BET比表面積が220m2と本発明の範囲を逸脱する比較例1の場合には光沢表面に擦り傷が明らかに認められ耐擦過性が不十分である。10m2/gのBET比表面積のα−アルミナを顔料として使用した比較例2の場合にはインク吸収性が非常に悪く、それに伴い画像も不鮮明であり画像鮮明性が悪い。BET比表面積が275m2/gである擬ベーマイト型のアルミナを顔料として使用した比較例3の場合には、光沢表面の耐擦過性が悪く擦り傷が著しい。結着剤中にシラノール変性ポリビニルアルコールを含有しない光沢発現層を設けた比較例4の場合には写像性が悪く、光沢表面の耐擦過性も不十分である。また、インク受容層を設けずに本発明の光沢発現層を設けた比較例5の場合には、インク吸収性が非常に悪く文字が判別できず、そして画像鮮明性も不十分である。 Table 1 shows the following. Gloss of a mixture of a BET specific surface area as pigment and 55m 2 / g~80m is 2 / g theta-alumina or the theta-alumina and the BET specific surface area is 55m 2 / g~80m 2 / g γ- alumina In the case of Examples 1 and 3 to 9 of the present invention which are contained in the layer coating solution and contain silanol-modified polyvinyl alcohol in the binder, the glossy surface has no or little scratches, and the image is clear. Property, ink absorbability and image clarity are also good. On the other hand, in the case of Comparative Example 1 having a BET specific surface area of 220 m 2 that departs from the scope of the present invention, scratches are clearly observed on the glossy surface and the scratch resistance is insufficient. In the case of Comparative Example 2 in which α-alumina having a BET specific surface area of 10 m 2 / g was used as a pigment, the ink absorptivity was very poor, and accordingly, the image was unclear and the image sharpness was poor. In the case of Comparative Example 3 in which pseudo-boehmite type alumina having a BET specific surface area of 275 m 2 / g is used as a pigment, the abrasion resistance of the glossy surface is poor and scratches are remarkable. In the case of Comparative Example 4 in which a glossy layer containing no silanol-modified polyvinyl alcohol is provided in the binder, the image clarity is poor and the gloss resistance of the glossy surface is insufficient. Further, in the case of Comparative Example 5 in which the glossy expression layer of the present invention is provided without providing the ink receiving layer, the ink absorbability is very poor and characters cannot be distinguished, and the image clarity is insufficient.
更に表1からは、結着剤中にカチオン性アクリル系樹脂を使用した実施例5〜8の場合には他の実施例と比較して画像鮮明性および光沢表面の耐擦過性が特に優れていることが判る。 Further, from Table 1, in Examples 5 to 8 where a cationic acrylic resin was used in the binder, the image sharpness and the abrasion resistance of the glossy surface were particularly excellent compared to other examples. I know that.
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