JPS6357277A - Ink jet recording sheet - Google Patents
Ink jet recording sheetInfo
- Publication number
- JPS6357277A JPS6357277A JP61202355A JP20235586A JPS6357277A JP S6357277 A JPS6357277 A JP S6357277A JP 61202355 A JP61202355 A JP 61202355A JP 20235586 A JP20235586 A JP 20235586A JP S6357277 A JPS6357277 A JP S6357277A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- layer
- coat layer
- under coat
- calcium carbonate
- 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.)
- Pending
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 41
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 20
- 239000000049 pigment Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 abstract description 6
- 239000013078 crystal Substances 0.000 abstract description 4
- 230000035515 penetration Effects 0.000 abstract description 4
- 239000011800 void material Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 55
- 239000010410 layer Substances 0.000 description 53
- 239000000123 paper Substances 0.000 description 23
- 239000007787 solid Substances 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 238000010521 absorption reaction Methods 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 239000011230 binding agent Substances 0.000 description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 241000519995 Stachys sylvatica Species 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 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
- 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 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 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
- 229910052570 clay Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000011163 secondary particle Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 108010076119 Caseins Proteins 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 108010073771 Soybean Proteins Proteins 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000004110 Zinc silicate Substances 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
- 239000002253 acid Substances 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- WPUINVXKIPAAHK-UHFFFAOYSA-N aluminum;potassium;oxygen(2-) Chemical compound [O-2].[O-2].[Al+3].[K+] WPUINVXKIPAAHK-UHFFFAOYSA-N 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide 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
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 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
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000001186 cumulative effect Effects 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
- 150000001993 dienes Chemical class 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- XCOBTUNSZUJCDH-UHFFFAOYSA-B lithium magnesium sodium silicate Chemical compound [Li+].[Li+].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Na+].[Na+].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3 XCOBTUNSZUJCDH-UHFFFAOYSA-B 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 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
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- ZADYMNAVLSWLEQ-UHFFFAOYSA-N magnesium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[Mg+2].[Si+4] ZADYMNAVLSWLEQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002939 oilproofing Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 235000019710 soybean protein Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910002029 synthetic silica gel Inorganic materials 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 235000019352 zinc silicate Nutrition 0.000 description 1
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はインクジェット記録シートに関し、特に、シー
ト上に記録されたインクドツトの径が大きく且つインク
吸収性に優れ、しかも画像及び文字濃度が高く、例えば
、高速記録、多色記録に適したインクジェット記録シー
トに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inkjet recording sheet, and in particular, the present invention relates to an inkjet recording sheet, in which the ink dots recorded on the sheet have a large diameter, have excellent ink absorbency, and have high image and character density. For example, it relates to an inkjet recording sheet suitable for high-speed recording and multicolor recording.
インクジェット記録装置は低騒音、高速記録、多色化、
装置のコンパクト化が可能であり、さらに記録紙、普通
紙のいずれも使用できることから、各種ファクシミリ、
プリンター、コンピューター端末等に巾広く採用され、
近年急速に普及し、重要な情報機器の一分野を占めつつ
ある。Inkjet recording devices are low noise, high speed recording, multicolor,
The device can be made more compact and can use both recording paper and plain paper, making it suitable for various types of facsimiles,
Widely used in printers, computer terminals, etc.
It has rapidly become popular in recent years and is now occupying an important field of information equipment.
このような記録紙等のインクジェット記録シートに求め
られる特性として、
■ インクの吸収性が実用上問題の無い程度に速いこと
、
■ 記録シート上でのインクドツトの拡がりが記録装置
のドツト密度（単位長さあたりのドット数）に適合して
いること、
■ インクドツトの濃度が高いこと、真円性が良好なこ
と、
■ 表面強度が強く、筆記性が有ること、■ ファンホ
ールド加工時に紙粉の発生が少ないこと、
等があげられる。The characteristics required of such inkjet recording sheets such as recording paper include: (1) Ink absorption is fast enough to cause no practical problems; (2) The spread of ink dots on the recording sheet is determined by the dot density (unit length) of the recording device. ■ High density of ink dots and good roundness; ■ Strong surface strength and good writability; ■ No paper dust generated during fan hold processing. There are few things, etc.
これらの要求特性を満足させるために従来様々な提案が
なされている。例えば特開昭５２−５３０１２号には、
ステキヒトサイズ１秒以下の原紙に塗工紙製造用の塗料
を塗工する例が開示され、また、特開昭５３−４９１１
３号には尿素−ホルマリン樹脂を内添したシートに水溶
性高分子を含浸させる例が開示されている。しかしなが
ら、これらの普通紙タイプの記録用紙に於ける技術によ
れば、インクの吸収性は良好であるが、ドツト濃度が低
く、カラー記録に必要な色彩性の向上は望めないという
欠点があった。Various proposals have been made in the past to satisfy these required characteristics. For example, in Japanese Patent Application Laid-Open No. 52-53012,
An example of applying a paint for manufacturing coated paper to a base paper with a Steckigt size of 1 second or less has been disclosed, and Japanese Patent Application Laid-Open No. 53-4911
No. 3 discloses an example in which a sheet to which a urea-formalin resin is added is impregnated with a water-soluble polymer. However, although the technology for these plain paper type recording papers has good ink absorption, the drawback is that the dot density is low and it is not possible to improve the color properties necessary for color recording. .
また、特開昭５５−５１５８３号には非膠質シリカを顔
料に用いた例が開示され、さらにこれを改良すべく特開
昭５８−７２４９５号には平均粒径０．０５μ以下のシ
リカ系顔料を含み、水溶性高分子をバインダーとして片
面に１５ｇ／ｍ’以上塗工するインクジェット記録用紙
が開示されている。In addition, JP-A No. 55-51583 discloses an example in which non-colloidal silica is used as a pigment, and to further improve this, JP-A No. 58-72495 discloses a silica-based pigment with an average particle size of 0.05μ or less. An inkjet recording paper containing 15 g/m' or more of water-soluble polymer as a binder is coated on one side.
しかしながら、これらの技術によればインクドツトの解
像度及び色彩性は向上する反面、インク吸収性が普通紙
に比べ劣るという欠点があった。However, although these techniques improve the resolution and color properties of ink dots, they have the disadvantage that ink absorbency is inferior to that of plain paper.
また、前述の如き普通紙あるいは単一のコート層を設け
るという技術を改良すべく、支持体上に２層以上のイン
ク受理層を設ける技術として例えば、特開昭５５−１１
８２９号、特開昭５７−１０７８７９号、特開昭５８−
１１０２８７号が開示されているが、これらの出願は記
録シート上でのインクドツトの拡がりを抑えて、解像度
を向上させることが目的である。In addition, in order to improve the technique of providing plain paper or a single coat layer as described above, a technique of providing two or more ink receiving layers on a support is disclosed, for example, in JP-A-55-11.
No. 829, JP-A-57-107879, JP-A-58-
No. 110287 is disclosed, and the purpose of these applications is to suppress the spread of ink dots on a recording sheet and improve resolution.
即ち、特開昭５５−１１８２９号では最表層のインク吸
収性を遅くしてインクドツトの拡がりを抑え、特開昭５
７−１０７８７９号では合成シリカを一定範囲の顔料／
バインダーの比で２層設けることにより塗工量を多くす
ることで接着強度と解像度を向上させることを目的とし
ており、また特開昭５８−１１０２８７号では表層に大
きな空隙を持つ塗層を設け、隣接する内側に０．０５μ
以下で細孔容積の大きい空隙を持つ塗層を設けることに
より、吸収速度と解像度を向上させることを目的として
いる。しかしながらこれらの２層以上の塗層を設ける技
術に於てはインク吸収性と解像度を向上させることが目
的のだ狛に、記録シート上で記録装置のドツト密度に適
合したインクドツト径にまで拡がらない、即ちインク吸
収性を維持したまま、インクドツト径をコントロールす
ることが困難であるという欠点があった。That is, in JP-A-55-11829, the ink absorbency of the outermost layer is slowed down to suppress the spread of ink dots.
No. 7-107879, synthetic silica is used as a pigment in a certain range.
The aim is to improve adhesive strength and resolution by increasing the amount of coating by providing two layers in proportion to the binder, and in JP-A-58-110287, a coating layer with large voids is provided on the surface layer. 0.05μ inside adjacent
The purpose of the following is to improve the absorption rate and resolution by providing a coating layer with voids with a large pore volume. However, in the technology of forming two or more coating layers, the purpose is to improve ink absorption and resolution, but the ink dots on the recording sheet cannot be expanded to a diameter that matches the dot density of the recording device. In other words, it is difficult to control the ink dot diameter while maintaining ink absorbency.
また、特開昭６０−２６０３７６号では前述の欠点を改
良すべく、２層のインク受理層に於てインク吸収性の最
表層の内側に耐水耐油剤を含有させ、インクヒビクルと
の親和力を抑制させることにより、インクドツト径をコ
ントロールさせる例が開示されている。しかし、この技
術においてはインクドツト径を大きくすることが可能な
反面、インク吸収性が不充分であるという欠点があった
。Furthermore, in order to improve the above-mentioned drawbacks, in JP-A No. 60-260376, in the two ink-receiving layers, a water- and oil-proofing agent is contained inside the ink-absorbing outermost layer to suppress the affinity with the ink vehicle. An example is disclosed in which the ink dot diameter is controlled by this method. However, although this technique allows the ink dot diameter to be increased, it has the disadvantage that ink absorption is insufficient.
上記従来技術による欠点は以下の理由の為である。The disadvantages of the prior art described above are due to the following reasons.
即ち、インクジェット記録装置に於てベク印字を行う場
合、単色（ブラック、マゼンタ、イエロー、シアン）ベ
タ印字部に比べ、混色（マゼンク＋イエロー、マセ゛ン
タ＋シアン、イエロー＋シアン）ベタ印字部はインク量
が約２倍となる為、混色部のインク吸収性を維持し、し
かも単色部でベタ印字部の白抜けがない程度にインクド
ツト径を大きく拡げること、即ちインク吸収性を維持し
たまま、インクドツト径をコントロールすることが困難
であったことによる。このため、従来のインクジェット
記録シートは、いずれもその要求特性、即ちインク吸収
性記録装置に適合したインクドツト径のコントロール、
色彩性真円性等を全て満足させるものではなかった。In other words, when performing vector printing with an inkjet recording device, the amount of ink in the mixed color (magenta + yellow, magenta + cyan, yellow + cyan) solid print area is lower than that in the monochrome (black, magenta, yellow, cyan) solid print area. Since the ink dot diameter is approximately doubled, the ink dot diameter must be increased to the extent that the ink absorbency in the mixed color area is maintained and there are no white spots in the solid printed area in the single color area. This is because it was difficult to control. For this reason, all conventional inkjet recording sheets meet the required characteristics, namely, control of ink dot diameter suitable for ink-absorbing recording devices,
The color, roundness, etc. were not completely satisfied.
本発明は、上記従来の記録用シートの有する諸欠点を改
善、解消しようとするものであり、インクドツト径が大
きく、且つインク吸収性に優れた高速記録、多色記録に
適したインクジェット記録シートを提供することを目的
とする。The present invention aims to improve and eliminate the various drawbacks of the conventional recording sheets described above, and provides an inkjet recording sheet that has a large ink dot diameter and excellent ink absorption properties and is suitable for high-speed recording and multicolor recording. The purpose is to provide.
〔問題点を解決するだめの手段〕
上記の目的を達成するため、本発明は、支持体上に、最
表層と、該最表層に隣接する前記支持体側のアンダーコ
ート層とを設けたインクジェット記録シートに於て、前
記アンダーコート層の顔料の少なくとも一部として針柱
状炭酸カルシウム結束体を使用したインクジェット記録
シートを構成したものである。[Means for Solving the Problems] In order to achieve the above object, the present invention provides an inkjet recording system comprising, on a support, an outermost layer and an undercoat layer on the support side adjacent to the outermost layer. In the sheet, an inkjet recording sheet is constructed in which needle-shaped calcium carbonate aggregates are used as at least a part of the pigment of the undercoat layer.
そして、本発明を上記の如く構成したことにより、以下
のような作用、効果を生じる。By configuring the present invention as described above, the following actions and effects are produced.
即ち、最表層はインク吸収性を有する空隙構造であるた
め、表面に付着したインク液滴はまずこの最表層の空隙
に浸透する。次に、アンダーコート層に到達したインク
液滴がアンダーコート層の空隙に浸透するが、本発明に
於てはアンダーコート層に針柱状炭酸カルシウムが含有
されているため、吸収容量は大きいにも拘らず、インク
液滴の浸透速度が最表層のそれよりも遅くなる。つまり
、そのアンダーコート層に含有される針柱状炭酸カルシ
ウム結束体は、その−次粒子の結晶が三次元的に不規則
に絡み合い、カサ高く、ポアサイズが大きいとともに、
表面エネルギーが小さくインク液滴との親和力が小さい
ので、最表層に比較して浸透速度は遅くなるが、アンダ
ーコート層のインク吸収容量は大きい。その結果として
、アンダーコート層に到達したインク液滴はアンダーコ
ート層の垂直方向に浸透するより最表層との隣接面に沿
って横方向に浸透する方が早いため、インクドツト径は
大きくなる。尚、針柱状炭酸カルシウムのアンダーコー
ト層中の含有量の調節により、記録装置に適合したイン
ク吸収性及びインクドツト径の拡がりのコントロールが
可能である。That is, since the outermost layer has a void structure having ink absorbing properties, ink droplets adhering to the surface first penetrate into the voids of this outermost layer. Next, the ink droplets that have reached the undercoat layer penetrate into the voids in the undercoat layer, but in the present invention, since the undercoat layer contains acicular calcium carbonate, the absorption capacity is large. Regardless, the penetration speed of ink droplets is slower than that of the outermost layer. In other words, the acicular calcium carbonate aggregates contained in the undercoat layer have crystals of secondary particles intertwined irregularly in a three-dimensional manner, are bulky, and have a large pore size.
Since the surface energy is small and the affinity for ink droplets is small, the penetration rate is slower than that of the outermost layer, but the ink absorption capacity of the undercoat layer is large. As a result, the ink droplets that reach the undercoat layer penetrate laterally along the surface adjacent to the outermost layer more quickly than in the vertical direction of the undercoat layer, so the ink dot diameter becomes larger. By adjusting the content of the acicular calcium carbonate in the undercoat layer, it is possible to control the ink absorbency and the expansion of the ink dot diameter to suit the recording device.
以下において本発明を更に詳述する。The invention will be explained in further detail below.
本発明で使用する支持体としては、紙または熱可塑性樹
脂フィルムの如きシート状物質が用いられる。紙の場合
にはサイズ紙、無サイズ紙ともに用いられ、填料は含ん
でも、含まなくてもよい。The support used in the present invention is a sheet material such as paper or a thermoplastic resin film. In the case of paper, both sized paper and non-sized paper may be used, and may or may not contain a filler.
また、合成紙、布、不織布等も支障なく使用できる。In addition, synthetic paper, cloth, nonwoven fabric, etc. can be used without any problem.
熱可塑性フィルムの場合はポリエステル、ポリスチレン
、ポリ塩化ビニル、ポリメチルメタクリレート、ポリエ
チレン等の透明フィルムや酸化チタン、硫酸カルシウム
、炭酸カルシウム、クレー、タルク、シリカ、酸化亜鉛
等の白色顔料を充填した白色不透明なフィルムが使用さ
れる。Thermoplastic films include transparent films such as polyester, polystyrene, polyvinyl chloride, polymethyl methacrylate, and polyethylene, and white opaque films filled with white pigments such as titanium oxide, calcium sulfate, calcium carbonate, clay, talc, silica, and zinc oxide. film is used.
また、紙の表面に、これらの樹脂フィルムを貼り合わせ
たり溶融樹脂により加工したいわゆるラミネート紙等も
使用できる。また、これらの樹脂表面と後述の最表層等
のインク吸収層との接着を改善するために、下引層やコ
ロナ放電加工等を施してもよい。In addition, so-called laminated paper, which is obtained by pasting these resin films on the surface of paper or processing it with molten resin, can also be used. Further, in order to improve the adhesion between the resin surface and an ink absorbing layer such as the outermost layer described below, a subbing layer, corona discharge processing, etc. may be applied.
上記支持体には、インク吸収性の最表層と、それに隣接
して支持体側に位置するインク吸収性のアンダーコート
層とが設けられている。これらの吸収性層は一般に顔料
とバインダーを含有している。The support is provided with an ink-absorbing outermost layer and an ink-absorbing undercoat layer located adjacent to the outermost layer on the support side. These absorbent layers generally contain pigments and binders.
この最表層で使用する顔料としては、例えば、合成ケイ
酸、水酸化アルミニウム、合成無定形シリカ、タルク、
炭酸カル／ラム、炭酸マグネシラム、硫酸カルシウム、
硫酸バリウム、酸化チタン、クレー、硫酸マグネシウム
、ケイソウ土、酸化亜鉛、サテンホワイト、ケイ酸アル
ミニウム、アルミナ、合成ケイ酸アルミニウム、ケイ酸
マグネシウム、合成ケイ酸カルシウム、合成ケイ酸亜鉛
、酸化マグネシウム、水酸化マグネシウム、合成ヒドロ
タルサイト、合成ケイ酸マグネシウム、アルミン酸ナト
リウム、アルミン酸カリウム、ゼオライトなどの白色系
無機顔料、イオン交換樹脂粉末、尿素樹脂粉末、尿素ホ
ルマリン粉末、ポリスチレン樹脂等の樹脂を含む白色有
機顔料が挙げられる。Examples of pigments used in this outermost layer include synthetic silicic acid, aluminum hydroxide, synthetic amorphous silica, talc,
Cal/rum carbonate, magnesium carbonate, calcium sulfate,
Barium sulfate, titanium oxide, clay, magnesium sulfate, diatomaceous earth, zinc oxide, satin white, aluminum silicate, alumina, synthetic aluminum silicate, magnesium silicate, synthetic calcium silicate, synthetic zinc silicate, magnesium oxide, hydroxide White organic pigments including magnesium, synthetic hydrotalcite, synthetic magnesium silicate, sodium aluminate, potassium aluminate, white inorganic pigments such as zeolite, resins such as ion exchange resin powder, urea resin powder, urea formalin powder, and polystyrene resin. Examples include pigments.
一方、最表層で使用するバインダーとしては、例えば、
ポリビニルアルコール及びその誘導体、デンプン誘導体
及びそのアニオン又はカチオン変性体、カルボキシルメ
チルセルロース、ヒドロキシルエチルセルロース等のセ
ルロースｆｉ ｌ 体、カセイン、ゼラチン、大豆タン
白、通常のスチレン−ブタジェン共重合体、メチルメタ
クリレート−ブタジェン共重合体等の共役ジエン系重合
体ラテックス、アクリル酸エステル及びメククリル酸工
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
ックス、エチレン酢酸ビニル共重合体等のビニル系重合
体ラテックス等が挙げられる。On the other hand, examples of binders used in the outermost layer include:
Polyvinyl alcohol and its derivatives, starch derivatives and their anionic or cationic modified products, cellulose fi l forms such as carboxymethyl cellulose and hydroxylethyl cellulose, casein, gelatin, soybean protein, ordinary styrene-butadiene copolymer, methyl methacrylate-butadiene copolymer Conjugated diene polymer latexes such as polymers, acrylic polymer latexes such as polymers or copolymers of acrylic acid esters and meccrylic acid esters, vinyl polymer latexes such as ethylene vinyl acetate copolymers, etc. It will be done.
最表層の顔料：バインダーの重量比率は、１００：１０
〜１００：２００、好ましくは１００：２０〜１００：
１５０の範囲が好ましいが、記録装置のドツト密度やイ
ンク液滴の体積によりその比率はやや異なる。The weight ratio of pigment to binder in the outermost layer is 100:10.
~100:200, preferably 100:20-100:
A range of 150 is preferable, but the ratio varies slightly depending on the dot density of the recording device and the volume of the ink droplet.
本発明のアンダーコート層で顔料として使用する針柱状
炭酸カルシウム結束体は水酸化カルシウムトアラコナイ
ト質針柱状炭酸カルシウムヲ含有する結晶核炭酸カルシ
ウムとを含有する水懸濁液に、炭酸ガス含有気体を導入
し、炭酸化反応を行なうことにより得られ（特開昭５９
−２３２９１６号）、−次粒子たる結晶が三次元的に不
規則に絡み合った構造となっている。この針柱状炭酸カ
ルシウム結束体は単位面積あたり３〜２５ ｇ ／ ｍ
’、好ましくは５〜２０ｇ／ｍ’、より好ましくは７〜
１７ｇ／ ｍ’の量で含有させることにより本発明の目
的を達成できる。The acicular calcium carbonate aggregates used as the pigment in the undercoat layer of the present invention are prepared by adding a carbon dioxide-containing gas to an aqueous suspension containing calcium hydroxide toaraconite acicular calcium carbonate and crystal nuclei containing calcium carbonate. and carbonation reaction (Japanese Unexamined Patent Application Publication No. 1989-1999)
-232916), it has a structure in which crystals, which are secondary particles, are irregularly intertwined three-dimensionally. This needle-shaped calcium carbonate aggregate has a weight of 3 to 25 g/m per unit area.
', preferably 5 to 20 g/m', more preferably 7 to
The object of the present invention can be achieved by containing it in an amount of 17 g/m'.
尚、アンダーコート層には、この針柱状炭酸カルシウム
結束体と、上記最表層の顔料と同一の顔料とを併用する
ことができる。Incidentally, in the undercoat layer, this needle-shaped calcium carbonate aggregate and the same pigment as the pigment in the outermost layer can be used in combination.
このアンダーコート層で使用するバインダーは最表層の
ものと同様である。The binder used in this undercoat layer is the same as that in the outermost layer.
アンダーコート層の針柱状炭酸カルシウムを含有した顔
料：バインダーの重量比率は１００：２〜１００：１０
０、好ましくは１００：５〜１００：３０の範囲として
使用するのが好ましいが顔料の結着に充分な量のバイン
ダーであれば、その比率は特に限定されるものではない
。但し、１００：１００をこえてバインダーが多くなる
と、インク吸収性が低下し好ましくない。The weight ratio of the pigment containing acicular calcium carbonate in the undercoat layer to the binder is 100:2 to 100:10.
It is preferable to use the binder in an amount of 0, preferably in the range of 100:5 to 100:30, but the ratio is not particularly limited as long as the amount of binder is sufficient to bind the pigment. However, if the ratio exceeds 100:100 and the amount of binder increases, the ink absorbency decreases, which is not preferable.
尚、上記各インク吸収層には、必要であれば通常使用さ
れる分散剤、消泡剤、流動性変性剤、浸透剤、耐水化剤
、紫外線吸収剤、けい光染料等を問題なく使用できる。In addition, if necessary, commonly used dispersants, antifoaming agents, fluidity modifiers, penetrants, waterproofing agents, ultraviolet absorbers, fluorescent dyes, etc. can be used in each of the above ink absorption layers without any problem. .
これらの支持体上に設けるインク吸収層の塗工は、通常
用いられる各種方法により行うことができる。例えばエ
アードクター、ブレード、バー、０ツト、ロール、グラ
ビアスプレー等のコーターが挙げられ特にアンダーコー
ト層の場合は上記以外に抄紙工程に於いてサイズプレス
あるいはゲートロール等により塗工できる。The ink absorbing layer provided on these supports can be coated by various commonly used methods. Examples include coaters such as air doctors, blades, bars, rollers, gravure sprays, etc. In particular, in the case of an undercoat layer, coating can be performed using a size press, a gate roll, etc. in the papermaking process in addition to the above.
本発明における最表層の塗工量は１〜１５ｇ／ｍ′、好
ましくは２〜１０ｇ／ｍ’、より好ましくは３〜７ ｇ
／ ｍ’であり、該塗工量が少なすぎるとインクの吸
収性、インクドツトの色彩性が低下し、多すぎるとイン
クドツトが拡がらずいずれも好ましくない。The coating amount of the outermost layer in the present invention is 1 to 15 g/m', preferably 2 to 10 g/m', more preferably 3 to 7 g
/ m', and if the coating amount is too small, the ink absorbency and the color properties of the ink dots will deteriorate, and if it is too large, the ink dots will not spread, which is not preferable.
一方、アンダーコート層の塗工量は３〜３０ｇ／ ｍ’
、好ましくは５〜２５ｇ／ｍ’、より好ましくは７〜２
０ｇ／ｍ’であり、該塗工量が少なすぎるとインク吸収
性が低下し、多すぎるとインクが探り浸透してしまうた
めインクドツトが拡がらず且つ、色沈みが起こりいずれ
の場合も好ましくない。On the other hand, the coating amount of the undercoat layer is 3 to 30 g/m'
, preferably 5 to 25 g/m', more preferably 7 to 2
0g/m'; if the coating amount is too small, the ink absorbency will decrease, and if it is too large, the ink will penetrate and the ink dots will not spread, and the color will fade, which is undesirable in either case. .
尚、第２層と支持体の間には必要に応じて、インクジェ
ット記録シートに使用される種々の中間層を設けること
ができる。Note that various intermediate layers used in inkjet recording sheets can be provided between the second layer and the support, if necessary.
以下、本発明について実施例により更に詳述する。 Hereinafter, the present invention will be explained in more detail with reference to Examples.
実施例で諸物性を測定する際に使用した条件は以下の通
りである。また、実施例中の部は全て重量部を意味する
。The conditions used when measuring various physical properties in Examples are as follows. Moreover, all parts in the examples mean parts by weight.
（１） 記録装置；シャープ社製カラーイメージプリ
ンター エ○−７００
（２）色濃度；上記装置（１）でブラック（Ｂ）、イエ
ロー（Ｙ）、マゼンタ（Ｍ）、シアン（Ｃ）の各インク
でベタ印字した画像をマクベス濃度計ＲＤ−９１８で測
定した。(1) Recording device: Sharp color image printer E○-700 (2) Color density: Black (B), yellow (Y), magenta (M), and cyan (C) inks used in the device (1) above The solid printed image was measured using a Macbeth densitometer RD-918.
（３） ドツト径；上記装置（１）を用いてＢの単一
ドツトの印字を行い、１００倍のルーパで測定した。(3) Dot diameter: A single dot of B was printed using the above device (1) and measured using a 100x looper.
（４） インク吸収速度；上記装置（１）を用いて混
色印字部（Ｙ＋Ｍ、Ｍ十Ｃ，Ｙ＋Ｃ）をベタ印字し、約
１秒後に紙送りを行い紙押えロールに接触させ、汚れを
目視で判定した。(4) Ink absorption speed: Use the above device (1) to print the mixed color printing area (Y + M, M + C, Y + C) solidly, and after about 1 second, feed the paper and bring it into contact with the paper presser roll, and visually check for dirt. It was judged.
（５） インク吸収容量；上記装置（１）を用いて混
色印字部（同上）のベタ印字部の境界のにじみ具合を目
視で判定した。(5) Ink absorption capacity: Using the device (1) above, the degree of bleeding at the boundary of the solid print area of the mixed color print area (same as above) was visually determined.
（６） 平均粒子径；サンドグラインダーにて分散し
た顔料粒子のスラリーをコールタ−カウンター”ｒＡｎ
型（米１ｍコールターエレクトロニクス社製）を使用し
て粒度分布を測定し、累積体積で５０％の粒度を求め平
均粒子径とした。(6) Average particle diameter: A slurry of pigment particles dispersed with a sand grinder is
The particle size distribution was measured using a mold (manufactured by Coulter Electronics Co., Ltd., USA), and the particle size at 50% of the cumulative volume was determined, which was defined as the average particle size.
（７）単色部ベタ印字部白抜け；上記装置（１）を用い
て各インクでベタ印字し、白抜けを目視で判定した。(7) White spots in solid printed areas in monochrome areas: Solid printing was performed with each ink using the above device (1), and white spots were visually determined.
評 価二〇・・・・・・良好 ×・・・・・・不良 実施例１ 針柱状炭酸カルシウム結束体くカルライ）ＳＡ。Rating: 20...Good ×・・・・・・Poor Example 1 Needle-shaped calcium carbonate aggregates) SA.
白石工業社製）に水を加えてスラリーとし、該スラリー
（固形分）１００部にポリビニルアルコール（Ｐ−勺Δ
１１７クラレ社製）の１５％溶液（固形分２０部）を混
合して、アンダーコート層塗工液とし、マイヤーバーで
固形分１０ ｇ ／ ｍ’となるよう上質紙に塗布、乾
燥した。次に、微粉末シリカ（Ｐ−７８、水沢化学社製
）１００部、及びポリビニルアルコール（ＰＶＡ１１７
）９０部を含む最表層塗工液を調製し、固形分５ ｇ
／ ｍ’となるようにマイヤーバーで塗布、乾燥し、本
発明の記録シートを形成した。結果を表−１に示す。(manufactured by Shiraishi Kogyo Co., Ltd.) to make a slurry, and 100 parts of the slurry (solid content) was mixed with polyvinyl alcohol (P-
117 (manufactured by Kuraray Co., Ltd.) (solid content 20 parts) was mixed to prepare an undercoat layer coating solution, which was coated on high-quality paper using a Mayer bar to a solid content of 10 g/m' and dried. Next, 100 parts of finely powdered silica (P-78, manufactured by Mizusawa Chemical Co., Ltd.) and polyvinyl alcohol (PVA117) were added.
) 90 parts of the outermost layer coating liquid was prepared, and the solid content was 5 g.
/ m' with a Meyer bar and dried to form a recording sheet of the present invention. The results are shown in Table-1.
実施例２
支持体として市販のコロナ処理ポリエステルフィルムを
使用し、アンダーコート層の塗工液を固形分１５ｇ／ｍ
’とした以外、実施例１を繰り返した。結果を以下の表
−１に示す。Example 2 A commercially available corona-treated polyester film was used as a support, and the coating solution for the undercoat layer had a solid content of 15 g/m
Example 1 was repeated except that '. The results are shown in Table 1 below.
実施例３
最表層として、ケイ酸アルミニウム（キヨワード７００
オシフ、協和化学社製）１００部及び分散剤としてポリ
ビニルアルコール（ＰＶＡ１０５）５部に水を加えてス
ラリーとしたものをサンドグラインダーで平均粒子径を
５μに調整し、該スラリーにポリビニルアルコール（Ｐ
ＶＡ１１７）２０部を混合して最表層塗工液を調製し、
固形分Ｌｏｇ／ｍ’となるようにマイヤーバーで塗布、
乾燥したものを使用した以外、実施例１を繰り返した。Example 3 As the outermost layer, aluminum silicate (Kiyoward 700
A slurry was prepared by adding water to 100 parts of Osif (manufactured by Kyowa Kagaku Co., Ltd.) and 5 parts of polyvinyl alcohol (PVA105) as a dispersant, and the average particle diameter was adjusted to 5μ using a sand grinder.
Prepare the outermost layer coating liquid by mixing 20 parts of VA117),
Apply with a Mayer bar so that the solid content is Log/m'.
Example 1 was repeated except that it was dried.
結果を以下の表−１に示す。The results are shown in Table 1 below.
実施例４
アンダーコート層として、針柱状炭酸カルシウム結束体
（カルライトＳΔ）とアラゴナイト質炭酸カルシウム（
ＰＣ１白石工業社製）の重量比１：１にしたものに水を
加えてスラリーとし、該スラリー（固形分１００部）に
ポリビニルアルコール（ＰＶＡ１１７）の１５％溶液（
固形分２０部）を混合し、アンダーコート層塗工液を調
製し、マイヤーバーで固形分１０ ｇ ／ ｍ’となる
よう上質紙に塗布、乾燥したものを使用した以外、実施
例１を繰り返した。結果を以下の表−１に示す。Example 4 As an undercoat layer, acicular calcium carbonate aggregates (Callite SΔ) and aragonitic calcium carbonate (
PC1 (manufactured by Shiroishi Kogyo Co., Ltd.) at a weight ratio of 1:1, water was added to make a slurry, and a 15% solution of polyvinyl alcohol (PVA117) was added to the slurry (solid content 100 parts).
Example 1 was repeated, except that the undercoat layer coating solution was prepared by mixing 20 parts of solids (solid content: 20 parts), applied to high-quality paper with a Mayer bar to a solid content of 10 g/m', and dried. Ta. The results are shown in Table 1 below.
比較例１乃至４
アンダーコート層の塗工液中の顔料として、カルサイト
質炭酸カルシウム（ブリリアント１５白石工業社製）、
重質炭酸カルシウム（ソフトン２２０−１１、備北粉化
社製）、アマシンクレー（アマシン８８、ユーロクレー
社製）及び合成シリカ（Ｐ−５２７、水沢化学社製）を
用いた以外は実施例１と全く同様にして仕上げたものを
各々比較例（１）〜（４）の記録シートとした。結果を
表−１に示す。Comparative Examples 1 to 4 Calcite calcium carbonate (Brilliant 15 manufactured by Shiraishi Kogyo Co., Ltd.),
Example 1 except that heavy calcium carbonate (Softon 220-11, manufactured by Bihoku Funka Co., Ltd.), Amassin clay (Amassin 88, manufactured by Euroclay) and synthetic silica (P-527, manufactured by Mizusawa Chemical Co., Ltd.) were used. The recording sheets of Comparative Examples (1) to (4) were prepared in exactly the same manner as above. The results are shown in Table-1.
参考例１及び２
市販のインクジェット用コート紙Ａ、Ｂの結果を表−１
に示す。Reference Examples 1 and 2 Table 1 shows the results of commercially available inkjet coated papers A and B.
Shown below.
発明の効果
本発明のインクジェット記録シートは下記のような優れ
た特性の全てを具備するものである（表−１参照）。Effects of the Invention The inkjet recording sheet of the present invention has all of the following excellent properties (see Table 1).
（１） インクジェットのインク吸収性は良好である
。(1) Inkjet ink absorption is good.
（２） インクドツトの径をコントロールできるため
、単色部ベタ印字部の白抜けが無い程度まで、インクド
ツトの径を拡げることが可能である。(2) Since the diameter of the ink dot can be controlled, it is possible to increase the diameter of the ink dot to the extent that there are no white spots in the monochromatic solid printed area.
それ故、本発閂に従って、高速記録、多色記録に適した
インクジェット記録シートが得られる。Therefore, according to the present invention, an inkjet recording sheet suitable for high-speed recording and multicolor recording can be obtained.
昭和 年 月 日
３、補正をする者
事件との関係 出願人
名称 （５４０）本州製紙株式会社
４、代理人
５、補正命令の日付 自 発
６、補正の対象 明細書の発明の詳細な説明の欄
７、補正の内容Date of amendment 3, Relationship with the person making the amendment Name of applicant (540) Honshu Paper Co., Ltd. 4, Agent 5, Date of amendment order Voluntary 6, Subject of amendment Detailed explanation of the invention in the specification Column 7, Contents of amendment
Claims (1)
側のアンダーコート層とを設けたインクジェット記録シ
ートに於て、前記アンダーコート層の顔料の少なくとも
一部として針柱状炭酸カルシウム結束体を使用したこと
を特徴とするインクジェット記録シート。In an inkjet recording sheet having an outermost layer and an undercoat layer on the support side adjacent to the outermost layer on a support, needle-shaped calcium carbonate aggregates are used as at least a part of the pigment in the undercoat layer. An inkjet recording sheet characterized by using.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61202355A JPS6357277A (en) | 1986-08-28 | 1986-08-28 | Ink jet recording sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61202355A JPS6357277A (en) | 1986-08-28 | 1986-08-28 | Ink jet recording sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6357277A true JPS6357277A (en) | 1988-03-11 |
Family
ID=16456142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61202355A Pending JPS6357277A (en) | 1986-08-28 | 1986-08-28 | Ink jet recording sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6357277A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0879708A1 (en) * | 1996-11-11 | 1998-11-25 | Bando Chemical Industries, Ltd. | Water-color ink absorbing material and laminated film having layer of the absorbing material |
| WO2000001534A1 (en) * | 1998-07-03 | 2000-01-13 | Sony Chemicals Corp. | Material to be printed by an ink-jet printer |
| EP1316433A3 (en) * | 2001-11-29 | 2003-12-10 | Eastman Kodak Company | Method for increasing the diameter of an ink jet ink dot |
-
1986
- 1986-08-28 JP JP61202355A patent/JPS6357277A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0879708A1 (en) * | 1996-11-11 | 1998-11-25 | Bando Chemical Industries, Ltd. | Water-color ink absorbing material and laminated film having layer of the absorbing material |
| EP0879708A4 (en) * | 1996-11-11 | 1999-04-07 | Bando Chemical Ind | Water-color ink absorbing material and laminated film having layer of the absorbing material |
| US6040035A (en) * | 1996-11-11 | 2000-03-21 | Bando Chemical Industries, Ltd. | Water-color ink absorbing material and laminated film having layer of the absorbing material |
| WO2000001534A1 (en) * | 1998-07-03 | 2000-01-13 | Sony Chemicals Corp. | Material to be printed by an ink-jet printer |
| EP1316433A3 (en) * | 2001-11-29 | 2003-12-10 | Eastman Kodak Company | Method for increasing the diameter of an ink jet ink dot |
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