EP2506078A1 - Recording material for electrophotographic printing - Google Patents
Recording material for electrophotographic printing Download PDFInfo
- Publication number
- EP2506078A1 EP2506078A1 EP20110160422 EP11160422A EP2506078A1 EP 2506078 A1 EP2506078 A1 EP 2506078A1 EP 20110160422 EP20110160422 EP 20110160422 EP 11160422 A EP11160422 A EP 11160422A EP 2506078 A1 EP2506078 A1 EP 2506078A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- recording material
- material according
- toner
- pigment
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 46
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000002985 plastic film Substances 0.000 claims abstract description 16
- 229920006255 plastic film Polymers 0.000 claims abstract description 16
- 239000012876 carrier material Substances 0.000 claims abstract description 9
- 239000000049 pigment Substances 0.000 claims description 44
- 239000002245 particle Substances 0.000 claims description 20
- 229920003002 synthetic resin Polymers 0.000 claims description 13
- 239000000057 synthetic resin Substances 0.000 claims description 13
- 239000011230 binding agent Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 6
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical group C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229920006378 biaxially oriented polypropylene Polymers 0.000 claims description 5
- 239000011127 biaxially oriented polypropylene Substances 0.000 claims description 5
- 239000001023 inorganic pigment Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- 239000011135 tin Substances 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229920006228 ethylene acrylate copolymer Polymers 0.000 claims 1
- 229920000058 polyacrylate Polymers 0.000 claims 1
- 229920006254 polymer film Polymers 0.000 claims 1
- 239000000123 paper Substances 0.000 description 53
- 239000010410 layer Substances 0.000 description 52
- 238000000576 coating method Methods 0.000 description 17
- 239000011248 coating agent Substances 0.000 description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 15
- 239000010408 film Substances 0.000 description 15
- -1 silver halide Chemical class 0.000 description 15
- 239000000203 mixture Substances 0.000 description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 10
- 239000006185 dispersion Substances 0.000 description 10
- 239000000835 fiber Substances 0.000 description 10
- 229920001684 low density polyethylene Polymers 0.000 description 10
- 239000004702 low-density polyethylene Substances 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 9
- 229920001903 high density polyethylene Polymers 0.000 description 8
- 239000004700 high-density polyethylene Substances 0.000 description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 description 7
- 239000008199 coating composition Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 229920002472 Starch Polymers 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 235000019698 starch Nutrition 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 5
- 239000004408 titanium dioxide Substances 0.000 description 5
- NECRQCBKTGZNMH-UHFFFAOYSA-N 3,5-dimethylhex-1-yn-3-ol Chemical compound CC(C)CC(C)(O)C#C NECRQCBKTGZNMH-UHFFFAOYSA-N 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 235000012211 aluminium silicate Nutrition 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 229920001940 conductive polymer Polymers 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910000410 antimony oxide Inorganic materials 0.000 description 3
- 125000002091 cationic group Chemical group 0.000 description 3
- 239000012792 core layer Substances 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000011121 hardwood Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 3
- 229910001887 tin oxide Inorganic materials 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- 229910002018 Aerosil® 300 Inorganic materials 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 244000166124 Eucalyptus globulus Species 0.000 description 2
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 2
- 229920000881 Modified starch Polymers 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 125000000129 anionic group Chemical group 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
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000007765 extrusion coating Methods 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229940097275 indigo Drugs 0.000 description 2
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 235000019426 modified starch Nutrition 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 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 2
- 239000011122 softwood Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- NJVOHKFLBKQLIZ-UHFFFAOYSA-N (2-ethenylphenyl) prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1C=C NJVOHKFLBKQLIZ-UHFFFAOYSA-N 0.000 description 1
- GKWLILHTTGWKLQ-UHFFFAOYSA-N 2,3-dihydrothieno[3,4-b][1,4]dioxine Chemical compound O1CCOC2=CSC=C21 GKWLILHTTGWKLQ-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
- 229920002261 Corn starch Polymers 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229920000144 PEDOT:PSS Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 101710137710 Thioesterase 1/protease 1/lysophospholipase L1 Proteins 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 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
- 239000002253 acid Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 229920002988 biodegradable polymer Polymers 0.000 description 1
- 239000004621 biodegradable polymer Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 229940093876 calcium carbonate / kaolin Drugs 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- KAIBHHSFJUNSNW-UHFFFAOYSA-N indium(3+) oxygen(2-) titanium(4+) Chemical compound [O-2].[O-2].[Ti+4].[O-2].[In+3] KAIBHHSFJUNSNW-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011104 metalized film Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- YULBFWISFJEMQB-UHFFFAOYSA-N oxotin titanium Chemical compound [Sn]=O.[Ti] YULBFWISFJEMQB-UHFFFAOYSA-N 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 239000013047 polymeric layer Substances 0.000 description 1
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G7/0053—Intermediate layers for image-receiving members
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G7/0093—Image-receiving members, based on materials other than paper or plastic sheets, e.g. textiles, metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
- Y10T428/257—Iron oxide or aluminum oxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/259—Silicic material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31692—Next to addition polymer from unsaturated monomers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31692—Next to addition polymer from unsaturated monomers
- Y10T428/31699—Ester, halide or nitrile of addition polymer
Definitions
- the invention relates to a recording material with which photo-quality images can be produced by electrophotographic printing processes.
- the laser printer is based on the principle of electrophotography. Electrophotography, by imaging a photoconductor with the optical image of an original, produces a latent image of electrical charges which is subsequently used to selectively apply a toner (development) and an image (copy) of the original, for example, on paper. to create.
- a toner development
- an image copy
- the wet processes also called liquid toner processes, use as developers a suspension of a low dielectric constant aliphatic solvent and the toner, while the dry process uses a powder. With the aid of a collimated laser beam and a rotating mirror, an image of the desired side is drawn on the photosensitive drum.
- the drum is initially negatively charged, with the charge being reversed at the points where the laser beam strikes.
- the shape of the discharged areas on the drum corresponds to the later expression.
- the paper In the dry toner method, the paper is then passed over the image drum. It only touches the drum. Behind the paper a potential field is built up. The toner is transferred to the paper, where it is initially loose. Then the toner is fixed by means of a hot roller and under pressure. The drum is unloaded and excess toner removed from it.
- the toner suspension is first transferred to a heated blanket cylinder, on which the carrier liquid is evaporated and the toner is plasticized. From this intermediate drum, the toner image is then transferred to the recording sheet.
- the images produced with the help of a laser printer should achieve a quality comparable to a photograph. These include properties such as gloss, stiffness, opacity, high resolution and sharpness, and good lightfastness.
- an image-receiving material for electrophotography comprising a thermoplastic-coated base paper and a toner-receiving layer, and an antistatic backing layer.
- a disadvantage of this material is that it still needs improvement in terms of toner fixation and behavior in the printer.
- such materials show troublesome shiny spots which are due to the oil-like substances often used as release agents in the toner formulations.
- a recording material comprising a carrier material and at least one toner-receiving layer, wherein the recording material contains a metal-coated plastic film arranged between the carrier material and the toner-receiving layer.
- metals are used for coating the plastic film, which have an electrical conductivity of at most 40 x 10 6 S / m. Electrical conductivity refers to the ability of a substance to conduct electrical current, the reciprocal of which is resistivity. Particularly suitable for this purpose is aluminum.
- the plastic film suitable for coating with the metal may be a polyolefin film, for example a polyethylene or polypropylene film. It can be single-layered or multi-layered. Preferably, a multilayer biaxially oriented polyolefin film, in particular a polypropylene film is used.
- the polyolefin film preferably contains a porous core layer and at least one substantially nonporous surface layer disposed on at least one side of the core layer.
- the thickness of the metal-coated plastic film may preferably be 10 to 50 ⁇ m.
- the metal-coated plastic film preferably has an opacity of more than 98% and a specific surface topography expressed by a roughness value Rz of 0.01 to 2 ⁇ m.
- the carrier material may be uncoated base paper, a coated base paper (pigmented layered base paper) or a resin coated paper.
- the toner-receiving layer may preferably contain a water-soluble and / or water-dispersible binder, a finely divided oil-absorbing pigment and / or an electrically conductive component, wherein the electrically conductive Component may be an electrically conductive finely divided oxide or an electrically conductive polymer.
- base paper is understood to mean an uncoated or surface-sized paper.
- a base paper may be in addition to pulp fibers, sizing agents such as alkylene dimers, fatty acids and / or fatty acid salts, epoxidized fatty acid amides, alkenyl or alkyl succinic anhydride, wet strength agents such as polyamine-polyamide-epichlorohydrin, dry strength agents such as anionic, cationic or amphoteric polyamides or cationic starches, optical brighteners, fillers, pigments , Dyes, defoamers and other known in the paper industry tools may contain.
- the base paper can be surface-sized.
- Suitable sizing agents are polyvinyl alcohol or oxidized starch.
- the base paper can be produced on a Fourdrinier or a Yankee paper machine (cylinder paper machine).
- the weight per unit area of the base paper may be 50 to 250 g / m 2 , in particular 80 to 180 g / m 2 .
- the raw paper can be used in uncompacted or compacted form (smoothed).
- Particularly suitable are base papers having a density of 0.8 to 1.2 g / cm 3 , in particular 0.90 to 1.1 g / cm 3 .
- pulp fibers for example, bleached hardwood kraft pulp (LBKP), bleached softwood kraft pulp (NBKP), bleached hardwood sulfite pulp (LBSP) or bleached softwood sulfite pulp (NBSP) can be used.
- Pulp fibers derived from paper wastes can also be used.
- the pulp fibers mentioned can also be used mixed and proportions of other fibers, for example of synthetic resin fibers, mixed.
- pulp fibers are preferred 100% hardwood pulp used.
- the mean fiber length of the unground pulp is preferably 0.6 to 0.85 mm (Kajaani measurement).
- the pulp has a lignin content of less than 0.05 wt .-%, in particular 0.01 to 0.03 wt .-%, based on the mass of the pulp.
- fillers for example, kaolins, calcium carbonate in its natural forms such as limestone, marble or dolomite stone, precipitated calcium carbonate, calcium sulfate, barium sulfate, titanium dioxide, talc, silica, alumina and mixtures thereof can be used in the raw paper.
- Particularly suitable is calcium carbonate with a particle size distribution in which at least 60% of the particles are smaller than 2 microns and at most 40% are smaller than 1 micron.
- calcite is used with a particle size distribution in which about 25% of the particles have a particle size of less than 1 micron and about 85% of the particles have a particle size of less than 2 microns.
- a pigment-containing layer can be arranged on the base paper.
- the pigment may be a metal oxide, silicate, carbonate, sulfide or sulfate.
- Particularly suitable are pigments such as kaolins, talc, calcium carbonate and / or barium sulfate.
- Particularly preferred is a pigment having a narrow particle size distribution, wherein at least 70% of the pigment particles have a size of less than 1 micron.
- the proportion of the pigment with the narrow particle size distribution of the total amount of pigment is at least 5 wt .-%, in particular 10 to 90 wt .-%.
- a proportion of the pigment having the narrow particle size distribution of from 30 to 80% by weight of the total pigment.
- a pigment with a narrow particle size distribution according to the invention also understood to mean pigments having a particle size distribution in which at least about 70% by weight of the pigment particles have a size of less than about 1 ⁇ m and at 40 to 80% by weight of these pigment particles the difference between the pigment having the largest particle size (diameter) and the pigment of the smallest grain size is smaller than about 0.4 ⁇ m.
- a pigment mixture consisting of the abovementioned calcium carbonate and kaolin can be used in the pigment-containing layer.
- the quantitative ratio calcium carbonate / kaolin is preferably 30:70 to 70:30.
- the amount ratio of binder / pigment in the pigment-containing layer may be 0.1 to 2.5, preferably 0.2 to 1.5, but especially about 0.9 to 1.3.
- Any known water-soluble and / or water-dispersible binder can be used in the pigment-containing layer.
- film-forming starches such as thermally modified starches, in particular corn starches or hydroxypropylated starches, are particularly suitable for this purpose.
- the pigment-containing layer can be applied in-line or off-line with all customary in papermaking application units, the order quantity is chosen so that after drying the application weight 0.1 to 30 g / m 2 , in particular 1 to 20 g / m 2 , or According to a particularly preferred embodiment, 2 to 8 g / m 2 .
- the pigment-containing layer is applied with a size press or film press integrated within the paper machine.
- the base paper or the coated base paper on both sides with synthetic resin layers be provided.
- the resin layers may preferably contain a thermoplastic polymer.
- Particularly suitable for this purpose are polyolefins, for example low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene, 4-methylpentene-1 and mixtures thereof and polyesters, for example polycarbonates.
- the thermoplastic polymer is a biodegradable polymer and / or a polymer based on renewable raw materials such as a linear polyester, thermoplastic modified starch, or polylactic acid or a mixture of these polymers with each other or with other polymers.
- the front and / or rear synthetic resin layer contains at least 40 wt .-% HDPE having a density of more than 0.95 g / cm 3 , in particular 60 to 80 wt .-%.
- Particularly preferred is a composition consisting of 65% by weight HDPE having a density greater than 0.95 g / cm 3 and 35% by weight LDPE having a density of less than 0.935 g / cm 3 .
- the synthetic resin layers may contain white pigments such as titanium dioxide as well as other auxiliaries such as optical brighteners, dyes and dispersing aids.
- antistatic substances in particular electrically conductive inorganic pigments, are added to the synthetic resin layers.
- the coating weight of the synthetic resin layers may be 5 to 50 g / m 2 , in particular 5 to 30 g / m 2 , but preferably 10 to 20 g / m 2 .
- the synthetic resin layer can be extruded onto the base paper or the coated base paper in one layer or be multilayered coextruded.
- the extrusion coating can be carried out at machine speeds up to 600 m / min.
- the synthetic resin layers may, in one embodiment of the invention, be applied symmetrically on both sides of the base paper, i. the resin layers on both sides of the base paper have the same composition and are identical in surface topography.
- the surface of the synthetic resin layer may have roughness values Rz of 0.03 to 15 ⁇ m on both sides. The determination of the roughness Rz is carried out by a Hommel surface scanner according to DIN 4768.
- the resin layer on the side of the recording material which carries the toner-receiving layer and which is intended for printing has a lower roughness than that on the back side
- the side of the synthetic resin layer intended for printing has roughness values Rz of 0.03 to 1.8 ⁇ m
- the synthetic resin layer arranged on the side not intended for printing has roughness values Rz of 12 to 16 ⁇ m.
- a metal-coated plastic film is laminated on the intended for printing side of the carrier material, in particular a base paper or coated base paper, according to the invention.
- a polymeric layer preferably low density polyethylene (LDPE)
- LDPE low density polyethylene
- the thickness of the polyethylene layer is 6 to 15 g / m 2 , in particular 6 to 10 g / m 2 .
- the metal-coated plastic film can be laminated according to the invention on one side or on both sides of the carrier material.
- the back of the substrate may be extrusion coated with a thermoplastic polymer.
- a thermoplastic polymer Particularly suitable for this purpose are polyolefins, for example low-density polyethylene (LDPE), high-density polyethylene (HDPE), polypropylene, 4-methylpentene-1 and mixtures thereof, and also polyesters.
- the application weight of the backside polymer layer may be 5 to 50 g / m 2 , in particular 5 to 30 g / m 2 .
- a single-layered or multi-layered plastic film, in particular a biaxially oriented polypropylene film can be applied to the rear side.
- the core layer may contain substantially non-porous surface layers on both sides.
- the metal-coated side of the film applied to the substrate is painted in the next step with a toner-receiving coating solution which forms a toner-receiving layer after drying.
- a toner-receiving coating solution which forms a toner-receiving layer after drying.
- the metal-coated plastic film and the toner-receiving layer are applied on both sides of the substrate.
- the toner-receiving layer preferably comprises at least one water-soluble and / or water-dispersible binder, a finely divided pigment and / or an electrically conductive component.
- the binder in the toner-receiving layer can be any binder commonly used for paper coatings, preferably starch, polyvinyl alcohol, acrylates or copolymers of acrylates with other monomers are used.
- Particularly preferred binders are ethylene-acrylic acid copolymers, especially those having a melting range of 70 to 100 ° C.
- the finely divided pigment in the toner-receiving layer according to the invention is a finely divided inorganic pigment, for example silica, alumina, alumina hydrate, aluminum silicate, calcium carbonate, zinc oxide, tin oxide, antimony oxide, titanium dioxide, indium oxide or a mixed oxide of these oxides.
- the finely divided pigment is zinc oxide, tin oxide, antimony oxide, titanium dioxide indium oxide or a mixed oxide of these oxides.
- the finely divided pigments may be present individually or as mixtures in the toner-receiving layer.
- the finely divided pigments in the toner-receiving layer preferably have an average particle size of less than 1000 nm, in particular less than 200 nm. Particular preference is given to pigments having a BET surface area of from 30 m 2 / g to 400 m 2 / g. Pigments according to the invention can be obtained by the flame process or by wet-chemical precipitation processes.
- the electrically conductive component in the toner-receiving layer can be an electrically conductive polymer and / or an electrically conductive pigment.
- Electrically conductive polymers according to the invention may be those in which the electrical charge is transported in the form of ions, such as polystyrene sulfonic acid. However, preference is given to polymers in which the electric charge in the form of Electrons or holes are transported, for example, polyanilines and polythiophenes. Is particularly preferred as the conductive polymer doped with polystyrene acid poly (3,4-ethylene-dioxythiophene) (PEDOT: PSS), which is available for example under the names CLEVIOS ® or ORGACON ®. If, according to the invention, a polymer is used as the electrically conductive component in the toner-receiving layer, in a particular embodiment of the invention it can replace the water-soluble or water-dispersible binder in whole or in part.
- Conductive pigments according to the invention may consist inter alia of metal powder or carbon. However, preference is given to oxides such as antimony oxide, tin oxide, indium oxide or, with particular preference, titanium dioxide or zinc oxide or mixed oxides of the elements antimony, indium, titanium, zinc or tin.
- the conductive pigments of the invention preferably have an average particle size of less than 1000 nm, more preferably less than 200 nm. If a conductive pigment is used as the electroconductive component, in a preferred embodiment of the invention it may also simultaneously constitute the finely divided pigment of the toner-receiving layer.
- the amount of the electrically conductive component in the toner-receiving layer is selected so that the surface resistance of the recording material is less than 15 log (ohms / cm), measured according to DIN 53483. According to the invention, it can be in a range from 0 to 50 wt. in particular 0.1 to 4.0 wt .-%, based on the mass of the dried layer, are.
- the toner-receiving layer additionally contains anionic or nonionic surfactants in an amount of 0.01 to 4.0 wt .-%, in particular 0.05 to 2.5 wt .-%, based on the dried layer ,
- the toner-receiving layer may also contain other adjuvants, such as matting agents, dyes, crosslinking agents, lubricants, anti-blocking agents, and other conventional additives.
- adjuvants such as matting agents, dyes, crosslinking agents, lubricants, anti-blocking agents, and other conventional additives.
- the coating composition for forming the toner-receiving layer can be applied in-line or off-line with all customary in papermaking application units, the amount is chosen so that after drying the coating weight of at most 3 g / m 2 , in particular 0.1 to 2 g / m 2 , or according to a particularly preferred embodiment is 0.3 to 0.7 g / m 2 .
- the coating composition can be applied as a coating by means of a custom coating unit integrated within the extrusion coating installation. For example, a 3-roller application or a squeegee device is particularly well suited for this purpose.
- further layers such as protective layers or gloss-improving layers can be applied to the toner-receiving layer.
- the coating weight of such layers is preferably less than 1 g / m 2 .
- a base paper A was made from eucalyptus pulp. For grinding, the pulp was ground as an approximately 5% aqueous suspension (thick matter) with the aid of a refiner to a freeness of 36 ° SR. The mean fiber length was 0.64 mm. The concentration of pulp fibers in the thin was 1 wt .-%, based on the mass of the pulp suspension. Additives such as cationic starch in an amount of 0.4% by weight, as a neutral sizing agent alkyl ketene dimer (AKD) in an amount of 0.48% by weight, wet strength agent polyamine-polyamide-epichlorohydrin resin (Kymene®) were added to the thin material.
- Additives such as cationic starch in an amount of 0.4% by weight, as a neutral sizing agent alkyl ketene dimer (AKD) in an amount of 0.48% by weight, wet strength agent polyamine-polyamide-epichlorohydrin resin (Ky
- the quantities are based on the pulp mass.
- the thinstock whose pH was adjusted to about 7.5, was transferred from the head box to the wire of the paper machine, followed by sheet formation by dewatering the web in the wire section of the paper machine. In the press section, the further dewatering of the paper web to a water content of 60 wt .-%, based on the web weight. Further drying took place in the dryer section of the paper machine with heated drying cylinders. The result was a base paper with a basis weight of 160 g / m 2 and a humidity of about 7%.
- the base paper is coated on both sides with a coating of a styrene-acrylate binder, starch and a pigment mixture of calcium carbonate and kaolin with a coating weight of 15 g / m 2 on both sides, dried and then smoothed with a calender.
- the material thus obtained is referred to below as base paper A and used for the subsequent lamination of the metal-coated film in the extruder.
- Base paper B was produced in the same way as base paper A from eucalyptus pulp. In the pulp dispersion, however, it additionally contains titanium dioxide in an amount such that the base paper web after completion contains 10% by weight of TiO 2 , based on dry matter. This base paper B was used directly, without applying a further coating composition, for the subsequent lamination of the metal-coated film in an extruder.
- Both surfaces (front sides) of the base papers A and B intended for printing were laminated in the extruder after irradiation with a corona discharge with a metallized multilayer biaxially oriented polypropylene film (BOPP film, PZN, Vibac GmbH), whereby a film of polyethylene lower Density (LDPE) was extruded between the paper backing material and the plastic film.
- the thickness of the adhesion-promoting polyethylene film was 8 g / m 2 .
- the cooling cylinder was chosen so that the resulting surface of the back has a roughness of 0.9 microns, measured as Rz value according to DIN 4768.
- the materials obtained are hereinafter referred to as A1 and B1.
- the sides coated with the metallized film were coated with the toner-receiving coating and dried.
- the application amount of the coating composition was chosen such that a dry application of 0.5 g / m 2 results.
- the composition of the coating compositions is below specified.
- a dispersion of 3.0 g of a conductive pigment (antimony-doped titanium-tin oxide FT-2000, manufactured by ISK IS-HIHARA SANGYO KAISHA Ltd., Japan) in 27 g of water was prepared and mixed by means of a rotor-stator mixing system (ULTRA-TURRAX ® from IKA ® , Germany) until the mean particle size of the pigment is 180 nm.
- a rotor-stator mixing system ULTRA-TURRAX ® from IKA ® , Germany
- Both intended for printing surfaces of the raw papers A and B were after irradiation with a corona discharge with a biaxially oriented polypropylene film TREFAN TND 35 (Manufacturer Treofan Germany GmbH & Co. KG) laminated.
- the backs of the papers were extrusion coated with a polyethylene blend as in the inventive examples.
- the resulting materials are referred to below as A2 and B2.
- Both intended for printing surfaces of the papers A2 and B2 were then coated with a toneraufichden coating and dried.
- the application amount of the coating composition was chosen such that a dry application of 0.5 g / m 2 results.
- the composition of the coating is given below.
- Bonding test Two sheets of the DIN A4 size substrate are stacked at 23 ° C and 50% RH and loaded with a 10 kg weight. After 65 hours, the leaves are separated manually and the sticking / gluing is evaluated.
- Toner adhesion The recording materials are printed with an HP ® Indigo ® 6000 electrophotographic printer and the adhesion of the toner is assessed at 23 ° C / 50% RH by affixing and repelling a TESA 4104 adhesive tape.
- Table 1 recording material surface resistivity bonding test toner adhesion shiners A1a invention 7.4 + + + Alb invention 12.0 + + + + A1c invention 12.5 + + + B1a invention 7.4 + + + B1b invention 12.0 + + + B1c invention 12.5 + + + A2d comparison > 14.9 ⁇ ⁇ - B2d comparison > 14.9 ⁇ ⁇ -
- the images obtained using the recording materials according to the invention have a similar appearance with silver halide images and a comparable haptics.
- the adhesion of the toner to the surface is good in the recording materials according to the invention, the leaves do not stick together, do not accumulate electrostatically and give a uniform Toner transfer using both dry and liquid toners. Gloss spots by drops of the oils used in the toner as auxiliaries are safely avoided.
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Abstract
Description
Die Erfindung betrifft ein Aufzeichnungsmaterial, mit dem Bilder in Fotoqualität mit elektrofotografischen Druckverfahren hergestellt werden können.The invention relates to a recording material with which photo-quality images can be produced by electrophotographic printing processes.
Dem Laserdrucker liegt das Prinzip der Elektrofotografie zugrunde. Die Elektrofotografie erzeugt durch eine Abbildung bzw. Belichtung eines Fotoleiters mit dem optischen Abbild einer Vorlage ein latentes Bild aus elektrischen Ladungen, das nachfolgend dazu benutzt wird, selektiv einen Toner aufzutragen (Entwicklung) und ein Abbild (Kopie) der Vorlage, beispielsweise auf Papier, zu erzeugen. Man unterscheidet direkte und indirekte sowie nasse und trockene Elektrofotografie. Die Nassverfahren, auch Flüssigtonerverfahren genannt, nutzen als Entwickler eine Suspension aus einem aliphatischen Lösungsmittel mit geringer Dielektrizitätskonstante und dem Toner, während das Trockenverfahren ein Pulver verwendet. Mit Hilfe eines gebündelten Laserstrahls und eines rotierenden Spiegels wird auf die lichtempfindliche Bildtrommel ein Abbild der gewünschten Seite gezeichnet. Die Trommel ist zunächst negativ aufgeladen, wobei die Ladung an den Stellen wieder aufgehoben wird, auf die der Laserstrahl trifft. Die Form der entladenen Flächen auf der Trommel entspricht dem späteren Ausdruck. Über eine Rolle mit negativ geladenem Toner, der an den entladenen Stellen auf der Bildtrommel haften bleibt wird der Toner auf die Trommel gebracht.The laser printer is based on the principle of electrophotography. Electrophotography, by imaging a photoconductor with the optical image of an original, produces a latent image of electrical charges which is subsequently used to selectively apply a toner (development) and an image (copy) of the original, for example, on paper. to create. One differentiates between direct and indirect as well as wet and dry electrophotography. The wet processes, also called liquid toner processes, use as developers a suspension of a low dielectric constant aliphatic solvent and the toner, while the dry process uses a powder. With the aid of a collimated laser beam and a rotating mirror, an image of the desired side is drawn on the photosensitive drum. The drum is initially negatively charged, with the charge being reversed at the points where the laser beam strikes. The shape of the discharged areas on the drum corresponds to the later expression. About a roll of negatively charged toner, which sticks to the unloaded areas on the image drum, the toner is placed on the drum.
Beim Trockentonerverfahren wird das Papier anschließend über die Bildtrommel geführt. Es streift nur an der Trommel vorbei. Hinter dem Papier wird ein Potenzialfeld aufgebaut. Der Toner wird auf das Papier übertragen und ist dort zunächst lose. Anschließend wird der Toner mit Hilfe einer heißen Walze und unter Druck fixiert. Die Trommel wird entladen und überflüssiger Toner von ihr entfernt.In the dry toner method, the paper is then passed over the image drum. It only touches the drum. Behind the paper a potential field is built up. The toner is transferred to the paper, where it is initially loose. Then the toner is fixed by means of a hot roller and under pressure. The drum is unloaded and excess toner removed from it.
Bei dem Flüssigtonerverfahren wird die Tonersuspension zunächst auf einen beheizten Gummizylinder übertragen, auf dem die Trägerflüssigkeit verdampft und der Toner plastifiziert wird. Von dieser Zwischenwalze (intermediate drum) wird das Tonerbild dann auf das Aufzeichnungsblatt übertragen.In the liquid toner process, the toner suspension is first transferred to a heated blanket cylinder, on which the carrier liquid is evaporated and the toner is plasticized. From this intermediate drum, the toner image is then transferred to the recording sheet.
Die mit Hilfe eines Laser-Druckers erzeugten Bilder sollten eine mit einem Foto vergleichbare Qualität erreichen. Hierzu gehören Eigenschaften wie Glanz, Steifigkeit, Opazität, eine hohe Auflösung und Bildschärfe sowie eine gute Lichtbeständigkeit.The images produced with the help of a laser printer should achieve a quality comparable to a photograph. These include properties such as gloss, stiffness, opacity, high resolution and sharpness, and good lightfastness.
In der Publikation von HP (Hannelore Breuer): Das Know-how des Druckens: Die neuen Laser-Papiere von HP vom 13.05.2005, erhalten unter 41131.www4.hp.com/Backgrounder_Neue_Laser-Papiere.pdf (Stand vom 31.08.2010) werden mehrlagig beschichtete Papiere mit beidseitig "offener" poröser Oberfläche beschrieben. Unter Verwendung solche Papiere hergestellte Bilder weisen aber eine von herkömmlichen Silberhalogenidbildern deutlich unterschiedliche Haptik und einen unterschiedlichen Glanz der Oberfläche auf.In the publication of HP (Hannelore Breuer): The know-how of the printing: The new laser papers of HP from 13.05.2005, received under 41131.www4.hp.com/Backgrounder_Neue_Laser-Papiere.pdf (as of 31.08.2010 ) multilayer coated papers are described with "open" porous surface on both sides. However, images prepared using such papers have a haptic and surface gloss different from conventional silver halide images.
Um dem Ziel einer fotoähnlichen Qualität näher zu kommen, werden elektrofotografisch erzeugte Bilder auf Trägermaterialien produziert, die die Haptik und das Aussehen eines typischen Silbersalz-Fotos aufweisen. In der
Weitere Aufzeichnungsmaterialien für elektrofotografische Verfahren sind beispielsweise beschrieben in
Es ist daher Aufgabe der Erfindung, ein Aufzeichnungsmaterial bereit zu stellen, welches mindestens von einer Seite bedruckbar ist, eine gute, mit einem Silbersalz-Foto vergleichbare Bildqualität und neben einer guten Licht- und Ozonresistenz bei Lagerung ein gutes Einzugs- und Transport-Verhalten im Drucker sowie eine gute Stapelfähigkeit aufweist.It is therefore an object of the invention to provide a recording material which is printable from at least one side, a good, comparable with a silver salt photo image quality and in addition to good light and ozone resistance during storage a good collection and transport behavior in the Printer and has a good stackability.
Gelöst wird diese Aufgabe durch ein Aufzeichnungsmaterial mit einem Trägermaterial und mindestens einer toneraufnehmenden Schicht, wobei das Aufzeichnungsmaterial eine zwischen dem Trägermaterial und der toneraufnehmenden Schicht angeordnete, mit einem Metall beschichtete Kunststofffolie enthält. Vorzugsweise werden zur Beschichtung der Kunststofffolie Metalle verwendet, die eine elektrische Leitfähigkeit von höchstens 40 x 106 S/m aufweisen. Die elektrische Leitfähigkeit bezeichnet die Fähigkeit eines Stoffs, elektrischen Strom zu leiten, deren Kehrwert ist der spezifische Widerstand. Insbesondere gut geeignet für diesen Zweck ist Aluminium.This object is achieved by a recording material comprising a carrier material and at least one toner-receiving layer, wherein the recording material contains a metal-coated plastic film arranged between the carrier material and the toner-receiving layer. Preferably, metals are used for coating the plastic film, which have an electrical conductivity of at most 40 x 10 6 S / m. Electrical conductivity refers to the ability of a substance to conduct electrical current, the reciprocal of which is resistivity. Particularly suitable for this purpose is aluminum.
Die für eine Beschichtung mit dem Metall geeignete Kunststofffolie kann eine Polyolefinfolie sein, beispielsweise eine Polyethylen- oder Polypropylenfolie. Sie kann einschichtig oder mehrschichtig aufgebaut sein. Vorzugsweise wird eine mehrschichtige biaxial orientierte Polyolefinfolie, insbesondere eine Polypropylenfolie eingesetzt. Die Polyolefinfolie enthält vorzugsweise eine poröse Kernschicht und mindestens eine im Wesentlichen porenfreie Oberflächenschicht, angeordnet auf mindestens einer Seite der Kernschicht.The plastic film suitable for coating with the metal may be a polyolefin film, for example a polyethylene or polypropylene film. It can be single-layered or multi-layered. Preferably, a multilayer biaxially oriented polyolefin film, in particular a polypropylene film is used. The polyolefin film preferably contains a porous core layer and at least one substantially nonporous surface layer disposed on at least one side of the core layer.
Die Dicke der metallbeschichteten Kunststofffolie kann vorzugsweise 10 bis 50 µm betragen. Die metallbeschichtete Kunststofffolie weist vorzugsweise eine Opazität von mehr als 98% und eine spezifische Oberflächentopografie, ausgedrückt durch einen Rauhigkeitswert Rz von 0,01 bis 2 µm auf.The thickness of the metal-coated plastic film may preferably be 10 to 50 μm. The metal-coated plastic film preferably has an opacity of more than 98% and a specific surface topography expressed by a roughness value Rz of 0.01 to 2 μm.
Das Trägermaterial kann ein unbeschichtetes Rohpapier, ein gestrichenes Rohpapier (mit einer pigmenthaltigen Schicht versehenes Rohpapier) oder ein kunstharzbeschichtetes Papier sein.The carrier material may be uncoated base paper, a coated base paper (pigmented layered base paper) or a resin coated paper.
Die toneraufnehmende Schicht kann vorzugsweise einen wasserlöslichen und/oder wasserdispergierbaren Binder, ein feinteiliges ölabsorbierendes Pigment und/oder eine elektrisch leitfähige Komponente enthalten, wobei die elektrisch leitfähige Komponente ein elektrisch leitfähiges feinteiliges Oxid oder ein elektrisch leitfähiges Polymer sein kann.The toner-receiving layer may preferably contain a water-soluble and / or water-dispersible binder, a finely divided oil-absorbing pigment and / or an electrically conductive component, wherein the electrically conductive Component may be an electrically conductive finely divided oxide or an electrically conductive polymer.
Für die Zwecke der Erfindung versteht man unter dem Begriff Rohpapier ein unbeschichtetes oder oberflächengeleimtes Papier. Ein Rohpapier kann neben Zellstofffasern, Leimungsmittel wie Alkylkentendimere, Fettsäuren und/oder Fettsäuresalze, epoxydierte Fettsäureamide, Alkenyl- oder Alkylbernsteinsäureanhydrid, Nassfestmittel wie Polyamin-Polyamid-Epichlorhydrin, Trockenfestmittel wie anionische, kationische oder amphotere Polyamide oder kationische Stärken, optische Aufheller, Füllstoffe, Pigmente, Farbstoffe, Entschäumer und weitere in der Papierindustrie bekannte Hilfsmittel enthalten kann. Das Rohpapier kann oberflächengeleimt sein. Hierzu geeignete Leimmittel sind beispielsweise Polyvinylalkohol oder oxydierte Stärke. Das Rohpapier kann auf einer Fourdrinier- oder einer Yankee-Papiermaschine(Zylinder-Papiermaschine) hergestellt werden. Das Flächengewicht des Rohpapiers kann 50 bis 250 g/m2, insbesondere 80 bis 180 g/m2, betragen. Das Rohpapier kann in unverdichteter oder verdichteter Form (geglättet) eingesetzt werden. Besonders gut geeignet sind Rohpapiere mit einer Dichte von 0,8 bis 1,2 g/cm3, insbesondere 0,90 bis 1,1 g/cm3. Als Zellstofffasern können beispielsweise gebleichter Hartholz-Kraftzellstoff (LBKP), gebleichter Nadelholz-Kraftzellstoff (NBKP), gebleichter Laubholzsulfitzellstoff (LBSP) oder gebleichter Nadelholzsulfitzellstoff (NBSP) eingesetzt werden. Es können auch aus Papierabfällen gewonnene Zellstofffasern verwendet werden. Die genannten Zellstofffasern können auch gemischt eingesetzt werden und Anteile anderer Fasern, zum Beispiel von Kunstharzfasern, zugemischt werden. Bevorzugt jedoch werden Zellstofffasern aus 100% Laubholzzellstoff eingesetzt. Die mittlere Faserlänge des ungemahlenen Zellstoffs beträgt vorzugsweise 0,6 bis 0,85 mm (Kajaani-Messung). Ferner weist der Zellstoff einen Ligningehalt von weniger als 0,05 Gew.-% auf, insbesondere 0,01 bis 0,03 Gew.-%, bezogen auf die Masse des Zellstoffs.For the purposes of the invention, the term base paper is understood to mean an uncoated or surface-sized paper. A base paper may be in addition to pulp fibers, sizing agents such as alkylene dimers, fatty acids and / or fatty acid salts, epoxidized fatty acid amides, alkenyl or alkyl succinic anhydride, wet strength agents such as polyamine-polyamide-epichlorohydrin, dry strength agents such as anionic, cationic or amphoteric polyamides or cationic starches, optical brighteners, fillers, pigments , Dyes, defoamers and other known in the paper industry tools may contain. The base paper can be surface-sized. Examples of suitable sizing agents are polyvinyl alcohol or oxidized starch. The base paper can be produced on a Fourdrinier or a Yankee paper machine (cylinder paper machine). The weight per unit area of the base paper may be 50 to 250 g / m 2 , in particular 80 to 180 g / m 2 . The raw paper can be used in uncompacted or compacted form (smoothed). Particularly suitable are base papers having a density of 0.8 to 1.2 g / cm 3 , in particular 0.90 to 1.1 g / cm 3 . As pulp fibers, for example, bleached hardwood kraft pulp (LBKP), bleached softwood kraft pulp (NBKP), bleached hardwood sulfite pulp (LBSP) or bleached softwood sulfite pulp (NBSP) can be used. Pulp fibers derived from paper wastes can also be used. The pulp fibers mentioned can also be used mixed and proportions of other fibers, for example of synthetic resin fibers, mixed. However, pulp fibers are preferred 100% hardwood pulp used. The mean fiber length of the unground pulp is preferably 0.6 to 0.85 mm (Kajaani measurement). Furthermore, the pulp has a lignin content of less than 0.05 wt .-%, in particular 0.01 to 0.03 wt .-%, based on the mass of the pulp.
Als Füllstoff können beispielsweise Kaoline, Calciumcarbonat in seinen natürlichen Formen wie Kalkstein, Marmor oder Dolomitstein, gefälltes Calciumcarbonat, Calciumsulfat, Bariumsulfat, Titaniumdioxid, Talkum, Silica, Aluminiumoxid und deren Gemische im Rohpapier eingesetzt werden. Besonders geeignet ist Calciumcarbonat mit einer Korngrößenverteilung, bei der mindestens 60 % der Teilchen kleiner sind als 2 µm und höchstens 40 % kleiner sind als 1 µm. In einer besonderen Ausgestaltung der Erfindung wird Calcit mit einer Korngrößenverteilung eingesetzt, bei der etwa 25 % der Teilchen eine Teilchengröße von weniger als 1 µm und etwa 85 % der Teilchen eine Teilchengröße von weniger als 2 µm aufweisen.As fillers, for example, kaolins, calcium carbonate in its natural forms such as limestone, marble or dolomite stone, precipitated calcium carbonate, calcium sulfate, barium sulfate, titanium dioxide, talc, silica, alumina and mixtures thereof can be used in the raw paper. Particularly suitable is calcium carbonate with a particle size distribution in which at least 60% of the particles are smaller than 2 microns and at most 40% are smaller than 1 micron. In a particular embodiment of the invention, calcite is used with a particle size distribution in which about 25% of the particles have a particle size of less than 1 micron and about 85% of the particles have a particle size of less than 2 microns.
In einer besonderen Ausführungsform der Erfindung kann auf dem Rohpapier eine pigmenthaltige Schicht angeordnet sein. Das Pigment kann ein Metalloxid, Silikat, Carbonat, Sulfid oder Sulfat sein. Besonders gut geeignet sind Pigmente wie Kaoline, Talkum, Calciumcarbonat und/oder Bariumsulfat. Besonders bevorzugt ist ein Pigment mit einer engen Korngrößenverteilung, bei der mindestens 70% der Pigmentpartikel eine Größe von kleiner als 1µm aufweisen. Der Anteil des Pigments mit der engen Korngrößenverteilung an der gesamten Pigmentmenge beträgt mindestens 5 Gew.-%, insbesondere 10 bis 90 Gew.-%. Besonders gute Ergebnisse sind mit einem Anteil des Pigments mit der engen Korngrößenverteilung von 30 bis 80 Gew.-% des Gesamtpigments zu erreichen. Unter einem Pigment mit einer engen Korngrößenverteilung werden erfindungsgemäß auch Pigmente mit einer Korngrößenverteilung verstanden, bei der mindestens etwa 70 Gew.-% der Pigmentpartikel eine Größe von kleiner als etwa 1 µm aufweist und bei 40 bis 80 Gew.-% dieser Pigmentpartikel die Differenz zwischen dem Pigment mit der größten Korngröße (Durchmesser) und dem Pigment der kleinsten Korngröße kleiner als etwa 0,4 µm ist. Als besonders vorteilhaft erwies sich ein Calciumcarbonat mit einem d50%-Wert von etwa 0,7 µm.In a particular embodiment of the invention, a pigment-containing layer can be arranged on the base paper. The pigment may be a metal oxide, silicate, carbonate, sulfide or sulfate. Particularly suitable are pigments such as kaolins, talc, calcium carbonate and / or barium sulfate. Particularly preferred is a pigment having a narrow particle size distribution, wherein at least 70% of the pigment particles have a size of less than 1 micron. The proportion of the pigment with the narrow particle size distribution of the total amount of pigment is at least 5 wt .-%, in particular 10 to 90 wt .-%. Particularly good results can be achieved with a proportion of the pigment having the narrow particle size distribution of from 30 to 80% by weight of the total pigment. Under a pigment with a narrow particle size distribution according to the invention also understood to mean pigments having a particle size distribution in which at least about 70% by weight of the pigment particles have a size of less than about 1 μm and at 40 to 80% by weight of these pigment particles the difference between the pigment having the largest particle size (diameter) and the pigment of the smallest grain size is smaller than about 0.4 μm. Particularly advantageous proved to be a calcium carbonate with a d50% value of about 0.7 microns.
In einer weiteren Ausführungsform der Erfindung kann in der pigmenthaltigen Schicht eine Pigmentmischung eingesetzt werden, die aus dem oben genannten Calciumcarbonat und Kaolin besteht. Das Mengenverhältnis Calciumcarbonat/Kaolin beträgt vorzugsweise 30:70 bis 70:30. Das Mengenverhältnis Bindemittel/Pigment in der pigmenthaltigen Schicht kann 0,1 bis 2,5, vorzugsweise 0,2 bis 1,5, insbesondere jedoch etwa 0,9 bis 1,3 betragen. In der pigmenthaltigen Schicht kann jedes bekannte wasserlösliche und/oder wasserdispergierbare Bindemittel eingesetzt werden. Besonders geeignet sind hierzu neben Latexbindern filmbildende Stärken wie thermisch modifizierte Stärken, insbesondere Maisstärken oder hydroxypropylierte Stärken. Die pigmenthaltige Schicht kann mit allen in der Papierherstellung üblichen Auftragsaggregaten inline oder offline aufgebracht werden, wobei die Auftragsmenge so gewählt wird, dass nach dem Trocknen das Auftragsgewicht 0,1 bis 30 g/m2, insbesondere 1 bis 20 g/m2, oder gemäß einer besonders bevorzugten Ausführungsform 2 bis 8 g/m2 beträgt. In einer bevorzugten Ausführungsform wird die pigmenthaltige Schicht mit einer innerhalb der Papiermaschine integrierten Leimpresse oder Filmpresse aufgetragen.In a further embodiment of the invention, a pigment mixture consisting of the abovementioned calcium carbonate and kaolin can be used in the pigment-containing layer. The quantitative ratio calcium carbonate / kaolin is preferably 30:70 to 70:30. The amount ratio of binder / pigment in the pigment-containing layer may be 0.1 to 2.5, preferably 0.2 to 1.5, but especially about 0.9 to 1.3. Any known water-soluble and / or water-dispersible binder can be used in the pigment-containing layer. In addition to latex binders, film-forming starches, such as thermally modified starches, in particular corn starches or hydroxypropylated starches, are particularly suitable for this purpose. The pigment-containing layer can be applied in-line or off-line with all customary in papermaking application units, the order quantity is chosen so that after drying the application weight 0.1 to 30 g / m 2 , in particular 1 to 20 g / m 2 , or According to a particularly preferred embodiment, 2 to 8 g / m 2 . In a preferred embodiment, the pigment-containing layer is applied with a size press or film press integrated within the paper machine.
In einer weiteren Ausführungsform der Erfindung kann das Rohpapier oder das gestrichene Rohpapier beidseitig mit Kunstharzschichten versehen sein. Die Kunstharzschichten (vorderseitige und/oder rückseitige Kunstharzschicht) können vorzugsweise ein thermoplastisches Polymer enthalten. Insbesondere geeignet hierfür sind Polyolefine, beispielsweise Polyethylen niedriger Dichte (LDPE), Polyethylen hoher Dichte (HDPE), Polypropylen, 4-Methylpenten-1 und deren Gemische sowie Polyester, beispielsweise Polycarbonate. In einer besonderen Ausgestaltung der Erfindung ist das thermoplastische Polymer ein biologisch abbaubares Polymer und/oder ein Polymer auf Basis nachwachsender Rohstoffe wie ein linearer Polyester, thermoplastische modifizierte Stärke, oder Polymilchsäure oder eine Mischung dieser Polymere untereinander oder mit anderen Polymeren.In a further embodiment of the invention, the base paper or the coated base paper on both sides with synthetic resin layers be provided. The resin layers (front and / or back resin layer) may preferably contain a thermoplastic polymer. Particularly suitable for this purpose are polyolefins, for example low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene, 4-methylpentene-1 and mixtures thereof and polyesters, for example polycarbonates. In a particular embodiment of the invention, the thermoplastic polymer is a biodegradable polymer and / or a polymer based on renewable raw materials such as a linear polyester, thermoplastic modified starch, or polylactic acid or a mixture of these polymers with each other or with other polymers.
In einer weiteren besonders bevorzugten Ausgestaltung der Erfindung enthält die vorderseitige und/oder rückseitige Kunstharzschicht mindestens 40 Gew.-% HDPE mit einer Dichte von mehr als 0,95 g/cm3, insbesondere 60 bis 80 Gew.-%. Besonders bevorzugt ist eine Zusammensetzung, die aus 65 Gew.-% HDPE mit einer Dichte von mehr als 0,95 g/cm3 und 35 Gew.-% LDPE mit einer Dichte von weniger als 0,935 g/cm3 besteht.In a further particularly preferred embodiment of the invention, the front and / or rear synthetic resin layer contains at least 40 wt .-% HDPE having a density of more than 0.95 g / cm 3 , in particular 60 to 80 wt .-%. Particularly preferred is a composition consisting of 65% by weight HDPE having a density greater than 0.95 g / cm 3 and 35% by weight LDPE having a density of less than 0.935 g / cm 3 .
Die Kunstharzschichten können Weißpigmente wie Titandioxid sowie weitere Hilfsstoffe wie optische Aufheller, Farbstoffe und Dispergierhilfsmittel enthalten. In einer besonderen Ausgestaltungsform der Erfindung werden antistatisch wirkende Substanzen, insbesondere elektrisch leitfähige anorganische Pigmente, zu den Kunstharzschichten zugefügt.The synthetic resin layers may contain white pigments such as titanium dioxide as well as other auxiliaries such as optical brighteners, dyes and dispersing aids. In a particular embodiment of the invention, antistatic substances, in particular electrically conductive inorganic pigments, are added to the synthetic resin layers.
Das Auftragsgewicht der Kunstharzschichten kann 5 bis 50 g/m2, insbesondere 5 bis 30 g/m2, bevorzugt jedoch 10 bis 20 g/m2 betragen. Die Kunstharzschicht kann auf das Rohpapier oder das gestrichene Rohpapier einschichtig extrudiert oder mehrschichtig coextrudiert werden. Die Extrusionsbeschichtung kann mit Maschinengeschwindigkeiten bis 600 m/min erfolgen.The coating weight of the synthetic resin layers may be 5 to 50 g / m 2 , in particular 5 to 30 g / m 2 , but preferably 10 to 20 g / m 2 . The synthetic resin layer can be extruded onto the base paper or the coated base paper in one layer or be multilayered coextruded. The extrusion coating can be carried out at machine speeds up to 600 m / min.
Die Kunstharzschichten können in einer Ausgestaltungsform der Erfindung symmetrisch auf beiden Seiten des Rohpapiers aufgetragen werden, d.h. die Kunstharzschichten auf beiden Seiten des Rohpapiers weisen dieselbe Zusammensetzung auf und sind hinsichtlich der Oberflächentopografie identisch. Erfindungsgemäß kann die Oberfläche der Kunstharzschicht auf beiden Seiten Rauhigkeitswerte Rz von 0,03 bis 15 µm aufweisen. Die Bestimmung der Rauhigkeit Rz erfolgt durch einen Hommel-Oberflächenabtaster nach DIN 4768.The synthetic resin layers may, in one embodiment of the invention, be applied symmetrically on both sides of the base paper, i. the resin layers on both sides of the base paper have the same composition and are identical in surface topography. According to the invention, the surface of the synthetic resin layer may have roughness values Rz of 0.03 to 15 μm on both sides. The determination of the roughness Rz is carried out by a Hommel surface scanner according to DIN 4768.
In einer weiteren Ausgestaltungsform der Erfindung, die ein einseitig bedruckbares glänzendes Aufzeichnungsmaterial zum Ziel hat, hat die Kunstharzschicht auf derjenigen Seite des Aufzeichnungsmaterials, die die toneraufnehmende Schicht trägt und die für das Bedrucken vorgesehen ist (Vorderseite), eine geringere Rauhigkeit als die auf der Rückseite. In dieser Ausgestaltungsform weist die für die Bedruckung vorgesehene Seite der Kunstharzschicht Rauhigkeitswerte Rz von 0,03 bis 1,8 µm auf, während die auf der nicht zur Bedruckung vorgesehenen Seite angeordnete Kunstharzschicht Rauhigkeitswerte Rz von 12 bis 16 µm aufweist.In another embodiment of the invention, which aims at a one-side printable glossy recording material, the resin layer on the side of the recording material which carries the toner-receiving layer and which is intended for printing (front side) has a lower roughness than that on the back side , In this embodiment, the side of the synthetic resin layer intended for printing has roughness values Rz of 0.03 to 1.8 μm, while the synthetic resin layer arranged on the side not intended for printing has roughness values Rz of 12 to 16 μm.
Auf die zum Bedrucken vorgesehene Seite des Trägermaterials, insbesondere eines Rohpapiers oder gestrichenen Rohpapiers, wird erfindungsgemäß zunächst eine metallbeschichtete Kunststofffolie aufkaschiert. Dabei wird eine polymere Schicht, vorzugsweise Polyethylen niedriger Dichte (LDPE), zwischen das Trägermaterial und die Kunststofffolie extrudiert. Die Dicke der Polyethylenschicht beträgt 6 bis 15 g/m2, insbesondere 6 bis 10 g/m2.On the intended for printing side of the carrier material, in particular a base paper or coated base paper, according to the invention, first a metal-coated plastic film is laminated. In this case, a polymeric layer, preferably low density polyethylene (LDPE), is extruded between the substrate and the plastic film. The thickness of the polyethylene layer is 6 to 15 g / m 2 , in particular 6 to 10 g / m 2 .
Die metallbeschichtete Kunststofffolie kann erfindungsgemäß einseitig oder beidseitig auf das Trägermaterial aufkaschiert sein. In der Ausführungsform der Erfindung, in der die metallbeschichtete Kunststofffolie nur auf einer Seite des Trägermaterials angeordnet ist, kann die Rückseite des Trägermaterials mit einem thermoplastischen Polymer extrusionsbeschichtet sein. Insbesondere geeignet sind hierfür Polyolefine, beispielsweise Polyethylen niedriger Dichte (LDPE), Polyethylen hoher Dichte (HDPE), Polypropylen, 4-Methylpenten-1 und deren Gemische sowie Polyester. Das Auftragsgewicht der rückseitigen Polymerschicht kann 5 bis 50 g/m2, insbesondere 5 bis 30 g/m2 betragen. In einer weiteren Ausgestaltungsform der Erfindung kann auf der Rückseite eine einschichtige oder mehrschichtige Kunststofffolie, insbesondere eine biaxial orientierte Polypropylenfolie, aufgetragen werden. Die Kernschicht kann im Wesentlichen porenfreie Oberflächenschichten auf beiden Seiten enthalten.The metal-coated plastic film can be laminated according to the invention on one side or on both sides of the carrier material. In the embodiment of the invention where the metal coated plastic film is disposed on only one side of the substrate, the back of the substrate may be extrusion coated with a thermoplastic polymer. Particularly suitable for this purpose are polyolefins, for example low-density polyethylene (LDPE), high-density polyethylene (HDPE), polypropylene, 4-methylpentene-1 and mixtures thereof, and also polyesters. The application weight of the backside polymer layer may be 5 to 50 g / m 2 , in particular 5 to 30 g / m 2 . In a further embodiment of the invention, a single-layered or multi-layered plastic film, in particular a biaxially oriented polypropylene film, can be applied to the rear side. The core layer may contain substantially non-porous surface layers on both sides.
Die metallbeschichtete Seite der auf dem Trägermaterial aufgebrachten Folie wird im nächsten Schritt mit einer toneraufnehmenden Beschichtungslösung gestrichen, die nach Trocknung eine toneraufnehmende Schicht bildet. In der besonderen Ausgestaltungsform der Erfindung, die ein beidseitig bedruckbares Auszeichnungsmaterial zum Ziel hat, sind die metallbeschichtete Kunststofffolie und die toneraufnehmende Schicht auf beiden Seiten des Trägermaterials aufgetragen.The metal-coated side of the film applied to the substrate is painted in the next step with a toner-receiving coating solution which forms a toner-receiving layer after drying. In the particular embodiment of the invention, which aims at a double-sided printable marking material, the metal-coated plastic film and the toner-receiving layer are applied on both sides of the substrate.
Die toneraufnehmende Schicht enthält vorzugsweise mindestens einen wasserlöslichen und/oder einen wasserdispergierbaren Binder, ein feinteiliges Pigment und/oder eine elektrisch leitfähige Komponente.The toner-receiving layer preferably comprises at least one water-soluble and / or water-dispersible binder, a finely divided pigment and / or an electrically conductive component.
Der Binder in der toneraufnehmenden Schicht kann jeder für Papierbeschichtungen gebräuchliche Binder sein, bevorzugt werden Stärke, Polyvinylalkohol, Acrylate oder Copolymere von Acrylaten mit anderen Monomeren verwendet. Besonders bevorzugte Binder sind Ethylenacrylsäure-Copolymere, insbesondere solche mit einem Schmelzbereich von 70 bis 100°C.The binder in the toner-receiving layer can be any binder commonly used for paper coatings, preferably starch, polyvinyl alcohol, acrylates or copolymers of acrylates with other monomers are used. Particularly preferred binders are ethylene-acrylic acid copolymers, especially those having a melting range of 70 to 100 ° C.
Das feinteilige Pigment in der toneraufnehmenden Schicht ist erfindungsgemäß ein feinteiliges anorganisches Pigment, beispielsweise Siliciumdioxid, Aluminiumoxid, Aluminiumoxidhydrat, Aluminiumsilicat, Calciumcarbonat, Zinkoxid, Zinnoxid, Antimonoxid, Titandioxid, Indiumoxid oder ein Mischoxid dieser Oxide. In einer besonderen bevorzugten Ausführungsform ist das feinteilige Pigment Zinkoxid, Zinnoxid, Antimonoxid, Titandioxid Indiumoxid oder ein Mischoxid dieser Oxide. Die feinteiligen Pigmente können einzeln oder als Mischungen in der toneraufnehmenden Schicht vorhanden sein.The finely divided pigment in the toner-receiving layer according to the invention is a finely divided inorganic pigment, for example silica, alumina, alumina hydrate, aluminum silicate, calcium carbonate, zinc oxide, tin oxide, antimony oxide, titanium dioxide, indium oxide or a mixed oxide of these oxides. In a particularly preferred embodiment, the finely divided pigment is zinc oxide, tin oxide, antimony oxide, titanium dioxide indium oxide or a mixed oxide of these oxides. The finely divided pigments may be present individually or as mixtures in the toner-receiving layer.
Die feinteiligen Pigmente in der toneraufnehmenden Schicht weisen vorzugsweise eine mittlere Partikelgröße von kleiner als 1000 nm, insbesondere kleiner als 200 nm auf. Bevorzugt werden insbesondere Pigmente mit einer BET-Oberfläche von 30 m2/g bis 400m2/g. Erfindungsgemäße Pigmente können durch das Flammenverfahren oder durch nasschemische Fällungsverfahren erhalten werden.The finely divided pigments in the toner-receiving layer preferably have an average particle size of less than 1000 nm, in particular less than 200 nm. Particular preference is given to pigments having a BET surface area of from 30 m 2 / g to 400 m 2 / g. Pigments according to the invention can be obtained by the flame process or by wet-chemical precipitation processes.
Die elektrisch leitfähige Komponente in der toneraufnehmenden Schicht kann erfindungsgemäß ein elektrisch leitfähiges Polymer und/oder ein elektrisch leitfähiges Pigment sein. Erfindungsgemäße elektrisch leitfähige Polymere können solche sein, bei denen die elektrische Ladung in Form von Ionen transportiert wird, wie Polystyrolsulfonsäure. Bevorzugt werden aber Polymere, in den die elektrische Ladung in Form von Elektronen oder Defektelektronen transportiert werden, beispielsweise Polyaniline und Polythiophene. Besonders bevorzugt ist als leitfähiges Polymer das mit Polystyrolsäure dotierte Poly(3,4-ethylen-dioxythiophen) (PEDOT:PSS), welches zum Beispiel unter den Namen CLEVIOS® oder ORGACON® erhältlich ist. Wird erfindungsgemäß ein Polymer als elektrisch leitfähige Komponente in der toneraufnehmenden Schicht eingesetzt, kann diese in einer besonderen Ausgestaltung der Erfindung den wasserlöslichen oder wasserdispergierbaren Binder ganz oder teilweise ersetzten.According to the invention, the electrically conductive component in the toner-receiving layer can be an electrically conductive polymer and / or an electrically conductive pigment. Electrically conductive polymers according to the invention may be those in which the electrical charge is transported in the form of ions, such as polystyrene sulfonic acid. However, preference is given to polymers in which the electric charge in the form of Electrons or holes are transported, for example, polyanilines and polythiophenes. Is particularly preferred as the conductive polymer doped with polystyrene acid poly (3,4-ethylene-dioxythiophene) (PEDOT: PSS), which is available for example under the names CLEVIOS ® or ORGACON ®. If, according to the invention, a polymer is used as the electrically conductive component in the toner-receiving layer, in a particular embodiment of the invention it can replace the water-soluble or water-dispersible binder in whole or in part.
Erfindungsgemäße leitfähige Pigmente können unter anderem aus Metallpulver oder Kohlenstoff bestehen. Bevorzugt werden jedoch Oxide wie Antimonoxid, Zinnoxid, Indiumoxid oder besonders bevorzugt Titandioxid oder Zinkoxid oder Mischoxide der Elemente Antimon, Indium, Titan, Zink oder Zinn. Die erfindungsgemäßen leitfähigen Pigmente weisen vorzugsweise eine mittlere Partikelgröße von kleiner als 1000 nm, besonders bevorzugt kleiner als 200 nm auf. Wird ein leitfähiges Pigment als elektroleitfähige Komponente einsetzt, kann diese in einer bevorzugten Ausführungsform der Erfindung auch gleichzeitig das feinteilige Pigment der toneraufnehmenden Schicht darstellen.Conductive pigments according to the invention may consist inter alia of metal powder or carbon. However, preference is given to oxides such as antimony oxide, tin oxide, indium oxide or, with particular preference, titanium dioxide or zinc oxide or mixed oxides of the elements antimony, indium, titanium, zinc or tin. The conductive pigments of the invention preferably have an average particle size of less than 1000 nm, more preferably less than 200 nm. If a conductive pigment is used as the electroconductive component, in a preferred embodiment of the invention it may also simultaneously constitute the finely divided pigment of the toner-receiving layer.
Die Menge der elektrisch leitfähigen Komponente in der toneraufnehmenden Schicht wird so gewählt, dass der Oberflächenwiderstand des Aufzeichnungsmaterials weniger als 15 log (Ohm/cm) beträgt, gemessen nach DIN 53483. Sie kann erfindungsgemäß in einem Bereich zwischen 0 bis 50 Gew.-%, insbesondere 0,1 bis 4,0 Gew.-%, bezogen auf die Masse der getrockneten Schicht, liegen.The amount of the electrically conductive component in the toner-receiving layer is selected so that the surface resistance of the recording material is less than 15 log (ohms / cm), measured according to DIN 53483. According to the invention, it can be in a range from 0 to 50 wt. in particular 0.1 to 4.0 wt .-%, based on the mass of the dried layer, are.
In einer weiteren Ausgestaltung der Erfindung enthält die toneraufnehmende Schicht zusätzlich anionische oder nichtionische oberflächenaktive Mittel in einer Menge von 0,01 bis 4,0 Gew.-%, insbesondere 0,05 bis 2,5 Gew.-%, bezogen auf die getrocknete Schicht.In a further embodiment of the invention, the toner-receiving layer additionally contains anionic or nonionic surfactants in an amount of 0.01 to 4.0 wt .-%, in particular 0.05 to 2.5 wt .-%, based on the dried layer ,
Die toneraufnehmende Schicht kann gegebenenfalls auch weitere Hilfsmittel enthalten, beispielsweise Mattierungsmittel, Farbstoffe, Vernetzungsmittel, Gleitmittel, Anti-Blocking-Mittel und andere übliche Additive.Optionally, the toner-receiving layer may also contain other adjuvants, such as matting agents, dyes, crosslinking agents, lubricants, anti-blocking agents, and other conventional additives.
Die Beschichtungsmasse zur Bildung der toneraufnehmenden Schicht kann mit allen in der Papierherstellung üblichen Auftragsaggregaten inline oder offline aufgebracht werden, wobei die Menge so gewählt wird, dass nach dem Trocknen das Auftragsgewicht höchstens 3 g/m2, insbesondere 0,1 bis 2 g/m2, oder gemäß einer besonders bevorzugten Ausführungsform 0,3 bis 0,7 g/m2 beträgt. Die Beschichtungsmasse kann als Strich mit Hilfe eines üblichen, innerhalb der Extrusionsbeschichtungsanlage integrierten Auftragswerkes aufgetragen werden. Hierzu besonders gut geeignet ist beispielsweise ein 3-Walzenauftrag oder eine Rakelvorrichtung.The coating composition for forming the toner-receiving layer can be applied in-line or off-line with all customary in papermaking application units, the amount is chosen so that after drying the coating weight of at most 3 g / m 2 , in particular 0.1 to 2 g / m 2 , or according to a particularly preferred embodiment is 0.3 to 0.7 g / m 2 . The coating composition can be applied as a coating by means of a custom coating unit integrated within the extrusion coating installation. For example, a 3-roller application or a squeegee device is particularly well suited for this purpose.
In einer weiteren Ausgestaltung der Erfindung können auf die toneraufnehmende Schicht weitere Schichten wie Schutzschichten oder glanzverbessernde Schichten aufgetragen werden. Das Auftragsgewicht solcher Schichten ist vorzugsweise kleiner als 1 g/m2.In a further embodiment of the invention, further layers such as protective layers or gloss-improving layers can be applied to the toner-receiving layer. The coating weight of such layers is preferably less than 1 g / m 2 .
Die folgenden Beispiele dienen der weiteren Erläuterung der Erfindung.The following examples serve to further illustrate the invention.
Ein Rohpapier A wurde aus Eukalyptus-Zellstoff hergestellt. Zur Mahlung wurde der Zellstoff als etwa 5 %ige wässrige Suspension (Dickstoff) mit Hilfe eines Refiners auf einen Mahlgrad von 36 °SR gemahlen. Die mittlere Faserlänge betrug 0,64 mm. Die Konzentration der Zellstofffasern im Dünnstoff betrug 1 Gew.-%, bezogen auf die Masse der Zellstoffsuspension. Dem Dünnstoff wurden Zusatzstoffe zugesetzt wie kationische Stärke in einer Menge von 0,4 Gew.-%, als ein neutrales Leimungsmittel Alkylketendimer (AKD)in einer Menge von 0,48 Gew.-%, Nassfestmittel Polyamin-Polyamid-Epichlorhydrinharz (Kymene®) in einer Menge von 0,36 Gew.-% und ein natürliches CaCO3 in einer Menge von 10 Gew.-%. Die Mengenangaben beziehen sich auf die Zellstoffmasse. Der Dünnstoff, dessen pH-Wert auf etwa 7,5 eingestellt wurde, wurde vom Stoffauflauf auf das Sieb der Papiermaschine gebracht, worauf die Blattbildung unter Entwässerung der Bahn in der Siebpartie der Papiermaschine erfolgte. In der Pressenpartie erfolgte die weitere Entwässerung der Papierbahn auf einen Wassergehalt von 60 Gew.-%, bezogen auf das Bahngewicht. Die weitere Trocknung erfolgte in der Trockenpartie der Papiermaschine mit beheizten Trockenzylindern. Es entstand ein Rohpapier mit einem Flächengewicht von 160 g/m2 und einer Feuchte von etwa 7%.A base paper A was made from eucalyptus pulp. For grinding, the pulp was ground as an approximately 5% aqueous suspension (thick matter) with the aid of a refiner to a freeness of 36 ° SR. The mean fiber length was 0.64 mm. The concentration of pulp fibers in the thin was 1 wt .-%, based on the mass of the pulp suspension. Additives such as cationic starch in an amount of 0.4% by weight, as a neutral sizing agent alkyl ketene dimer (AKD) in an amount of 0.48% by weight, wet strength agent polyamine-polyamide-epichlorohydrin resin (Kymene®) were added to the thin material. in an amount of 0.36 wt .-% and a natural CaCO 3 in an amount of 10 wt .-%. The quantities are based on the pulp mass. The thinstock, whose pH was adjusted to about 7.5, was transferred from the head box to the wire of the paper machine, followed by sheet formation by dewatering the web in the wire section of the paper machine. In the press section, the further dewatering of the paper web to a water content of 60 wt .-%, based on the web weight. Further drying took place in the dryer section of the paper machine with heated drying cylinders. The result was a base paper with a basis weight of 160 g / m 2 and a humidity of about 7%.
Das Rohpapier wird auf beiden Seiten mit einer Streichmasse aus einem Styrolacrylat-Binder, Stärke und einer Pigmentmischung aus Calciumcarbonat und Kaolin mit einem Auftragsgewicht von je 15 g/m2 auf beiden Seiten gestrichen, getrocknet und anschließend mit einem Kalander geglättet. Das so erhaltene Material wird im Folgenden als Rohpapier A bezeichnet und für die nachfolgende Kaschierung der metallbeschichteten Folie im Extruder eingesetzt.The base paper is coated on both sides with a coating of a styrene-acrylate binder, starch and a pigment mixture of calcium carbonate and kaolin with a coating weight of 15 g / m 2 on both sides, dried and then smoothed with a calender. The material thus obtained is referred to below as base paper A and used for the subsequent lamination of the metal-coated film in the extruder.
Das Rohpapier B wurde in gleicher Weise wie Rohpapier A aus Eukalyptus-Zellstoff hergestellt. Es enthält aber in der Zellstoffdispersion zusätzlich Titandioxid in einer Menge, dass die Rohpapierbahn nach Fertigstellung 10 Gew.-% TiO2, bezogen auf Trockenmasse enthielt. Dieses Rohpapier B wurde direkt, ohne Aufbringen einer weiteren Streichmasse, für die nachfolgende Kaschierung der metallbeschichteten Folie in einem Extruder eingesetzt.Base paper B was produced in the same way as base paper A from eucalyptus pulp. In the pulp dispersion, however, it additionally contains titanium dioxide in an amount such that the base paper web after completion contains 10% by weight of TiO 2 , based on dry matter. This base paper B was used directly, without applying a further coating composition, for the subsequent lamination of the metal-coated film in an extruder.
Beide zur Bedruckung vorgesehene Oberflächen (Vorderseiten) der Rohpapiere A und B wurden nach Bestrahlung mit einer Corona-Entladung mit einer metallisierten mehrschichtigen biaxial orientierten Polypropylen-Folie (BOPP-Film, PZN, Vibac GmbH) im Extruder laminiert, wobei ein Film aus Polyethylen niedriger Dichte (LDPE) zwischen das Papierträgermaterial und die Kunststofffolie extrudiert wurde. Die Dicke des haftvermittelnden Polyethylenfilms, betrug 8 g/m2. Die der zu bedruckenden Seite gegenüberliegende Seite (Rückseite) der Rohpapiere A und B wurde mit einem Polyethylengemisch aus 30 Gew.-% eines Polyethylens niedriger Dichte (LDPE, d=0,923 g/cm3) und 70 Gew.-% eines Polyethylens hoher Dichte (HDPE, d=0,964 g/cm3) mit einem Auftragsgewicht von 40 g/m2 im Extruder beschichtet. Der Kühlzylinder wurde so gewählt, dass die resultierende Oberfläche der Rückseite eine Rauhigkeit von 0,9 µm aufweist, gemessen als Rz-Wert nach DIN 4768. Die erhaltenen Materialien werden im Folgenden mit A1 und B1 bezeichnet.Both surfaces (front sides) of the base papers A and B intended for printing were laminated in the extruder after irradiation with a corona discharge with a metallized multilayer biaxially oriented polypropylene film (BOPP film, PZN, Vibac GmbH), whereby a film of polyethylene lower Density (LDPE) was extruded between the paper backing material and the plastic film. The thickness of the adhesion-promoting polyethylene film was 8 g / m 2 . The side of the base papers A and B opposite the print side was coated with a polyethylene blend of 30% by weight of a low density polyethylene (LDPE, d = 0.923 g / cm 3 ) and 70% by weight of a high density polyethylene (HDPE, d = 0.964 g / cm 3 ) coated with an application weight of 40 g / m 2 in the extruder. The cooling cylinder was chosen so that the resulting surface of the back has a roughness of 0.9 microns, measured as Rz value according to DIN 4768. The materials obtained are hereinafter referred to as A1 and B1.
Anschließend wurden die mit der metallisierten Folie beschichteten Seiten mit der toneraufnehmenden Streichmasse beschichtet und getrocknet. Die Auftragsmenge der Streichmasse wurde so dabei gewählt, dass sich ein Trockenauftrag von 0,5 g/m2 ergibt. Die Zusammensetzung der Streichmassen ist nachfolgend angegeben.Subsequently, the sides coated with the metallized film were coated with the toner-receiving coating and dried. The application amount of the coating composition was chosen such that a dry application of 0.5 g / m 2 results. The composition of the coating compositions is below specified.
Es wurde eine Dispersion von 3,0 g eines leitfähigen Pigments (Antimondotiertes Titan-Zinnoxid FT-2000, Hersteller ISK IS-HIHARA SANGYO KAISHA Ltd., Japan) in 27 g Wasser hergestellt und mittels eines Rotor-Stator-Mischsystems (ULTRA-TURRAX® der Firma IKA®, Deutschland) so lange behandelt bis die mittlere Teilchengröße des Pigments 180 nm beträgt. 22,4 g Ethylenacrylat-Dispersion MICHEM PRIME® 4990 R.E. wurden mit der so hergestellten Dispersion, 0,1 g Netzmittel SURFYNOL® 440 und 47,5 g Wasser gemischt.A dispersion of 3.0 g of a conductive pigment (antimony-doped titanium-tin oxide FT-2000, manufactured by ISK IS-HIHARA SANGYO KAISHA Ltd., Japan) in 27 g of water was prepared and mixed by means of a rotor-stator mixing system (ULTRA-TURRAX ® from IKA ® , Germany) until the mean particle size of the pigment is 180 nm. 22.4 g of ethylene acrylate dispersion MICHEM PRIME 4990 ® RE were mixed with the thus prepared dispersion, 0.1 g surfactant SURFYNOL ® 440 and 47.5 g of water.
16,3 g Ethylenacrylat-Dispersion MICHEM PRIME® 4990 R.E. wurden mit 29,0 g einer Dispersion von AEROSIL® 300 (Hersteller Evonik Degussa AG, Deutschland) mit einem Feststoffgehalt von 20 Gew.-%, 3 g einer Dispersion von Polystyrolsulfonsäure (VERSA® TL 130, Hersteller Akzo Nobel Surface Chemistry AB, Schweden, Polymergehalt 30 Gew.-%), 0,1 g Netzmittel SURFY-NOL® 440 und 51,6 g Wasser gemischt.16.3 g of ethylene acrylate dispersion MICHEM PRIME 4990 ® RE were mixed with 29.0 g of a dispersion of AEROSIL ® 300 (manufactured by Evonik Degussa AG, Germany) (having a solid content of 20 wt .-%, 3 g of a dispersion of polystyrene VERSA ® TL 130, manufacturer Akzo Nobel Surface Chemistry AB, Sweden, polymer content 30 wt .-%), 0.1 g of wetting agents SURFY-NOL ® 440 and 51.6 g of water mixed.
19,3 g Ethylenacrylat-Dispersion MICHEM PRIME® 4990 R.E. wurden mit 29,0 g einer Dispersion von AEROSIL® 300 (Hersteller Evonik Degussa AG, Deutschland) mit einem Feststoffgehalt von 20 Gew.-%, 0,1 g Netzmittel SURFYNOL® 440 und 51,6 g Wasser gemischt.19.3 g of ethylene acrylate dispersion MICHEM PRIME 4990 ® RE were mixed with 29.0 g of a dispersion of AEROSIL ® 300 (manufactured by Evonik Degussa AG, Germany) having a solids content of 20 wt .-%, 0.1 g surfactant SURFYNOL ® 440 and 51.6 g of water mixed.
Beide zur Bedruckung vorgesehene Oberflächen der Rohpapiere A und B wurden nach Bestrahlung mit einer Corona-Entladung mit einer biaxial orientierten Polypropylenfolie TREFAN TND 35 (Hersteller Treofan Germany GmbH & Co. KG) laminiert. Die Rückseiten der Papiere wurden mit einem Polyethylengemisch wie in den erfindungsgemäßen Beispielen extrusionsbeschichtet. Die erhaltenen Materialien werden im Folgenden mit A2 und B2 bezeichnet.Both intended for printing surfaces of the raw papers A and B were after irradiation with a corona discharge with a biaxially oriented polypropylene film TREFAN TND 35 (Manufacturer Treofan Germany GmbH & Co. KG) laminated. The backs of the papers were extrusion coated with a polyethylene blend as in the inventive examples. The resulting materials are referred to below as A2 and B2.
Beide zur Bedruckung vorgesehenen Oberflächen der Papiere A2 und B2 wurden anschließend mit einer toneraufnehmenden Streichmasse beschichtet und getrocknet. Die Auftragsmenge der Streichmasse wurde so dabei gewählt, dass sich ein Trockenauftrag von 0,5 g/m2 ergibt. Die Zusammensetzung der Streichmasse ist nachfolgend angegeben.Both intended for printing surfaces of the papers A2 and B2 were then coated with a toneraufreichenden coating and dried. The application amount of the coating composition was chosen such that a dry application of 0.5 g / m 2 results. The composition of the coating is given below.
Zu 27,9 g einer Ethylenacrylat-Dispersion MICHEM PRIME® 4990 R.E. (erhältlich von der Firma Michelman, Belgien) mit einem Polymergehalt von 35,7 Gew.-% wurden 0,1 g Netzmittel Surfynol® 440 (erhältlich von Air Products, Niederlande) und 72 g Wasser gemischt.To 27.9 g of an ethylene acrylate dispersion MICHEM PRIME 4990 ® RE (available from Michelman, Belgium) with a polymer content of 35.7 wt .-%, 0.1 g Wetting agent Surfynol ® 440 (available from Air Products, The Netherlands ) and 72 g of water.
Die gemäß den Beispielen und Vergleichsbeispiel erhaltenen Aufzeichnungsmaterialien wurden den nachstehend beschriebenen Prüfungen unterzogen.The recording materials obtained in Examples and Comparative Example were subjected to the tests described below.
Verklebungstest: Zwei Blätter des Trägermaterials in DIN-A4-Größe werden bei 23°C und 50% RF aufeinandergelegt und mit einem 10 kg-Gewicht belastet. Nach 65 Stunden werden die Blätter manuell getrennt und das Haften / Verkleben bewertet. Bonding test : Two sheets of the DIN A4 size substrate are stacked at 23 ° C and 50% RH and loaded with a 10 kg weight. After 65 hours, the leaves are separated manually and the sticking / gluing is evaluated.
+: Keine Verklebung,
○ : leichte Verklebung,
-: starke Verklebung+: No bonding,
○: easy bonding,
-: strong bonding
Tonerhaftung: Die Aufzeichnungsmaterialien werden mit einem elektrofotografischen Drucker vom Typ HP® Indigo® 6000 bedruckt und bei 23°C / 50% RF die Haftung des Toners durch Aufkleben und Widerabziehen eines Klebestreifens der Sorte TESA 4104 beurteilt. Toner adhesion : The recording materials are printed with an HP ® Indigo ® 6000 electrophotographic printer and the adhesion of the toner is assessed at 23 ° C / 50% RH by affixing and repelling a TESA 4104 adhesive tape.
+: Tonerschicht bleibt unbeschädigt,
○ : Tonerschicht etwas abgerissen,
-: Tonerschicht vollständig vom Träger abgerissen.+: Toner layer remains undamaged,
○: toner layer slightly torn off,
-: Toner layer completely torn off the carrier.
Visuelle Beurteilung des Drucks auf Glanzstellen: Die Aufzeichnungsmaterialien werden mit einem elektrofotografischen Drucker vom Typ HP® Indigo® 6000 bedruckt und das Druckbild visuell beurteilt. Visual assessment of print on gloss spots: The recording materials are printed on an HP ® Indigo ® 6000 electrophotographic printer and the print image is visually assessed.
+: keine Glanzstellen,
- Glanzstellen erkennbar.+: no highlights,
- highlights visible.
Die Prüfergebnisse sind in nachfolgender Tabelle 1 zusammengefasst.
Zusätzlich wurden Druckversuche mit den mit Trockentonern arbeitenden Druckern IGen® 3 von XEROX® und NeXpress® von Kodak® durchgeführt. In der folgenden Tabelle 2 sind die Prüfergebnisse (Mittelwerte für die 3 Drucker) dargestellt. Der Tonerübertrag auf das Auszeichnungsblatt wurde dabei visuell aufgrund der Gleichmäßigkeit von homogen gedruckten Farbflächen bewertet, wobei "+" für gute Gleichmäßigkeit, "○" für leichte Dichteschwankungen und "-" für starke Dichteschwankungen im Druckbild steht.
Es zeigte sich, dass die unter Verwendung der erfindungsgemäßen Aufzeichnungsmaterialien erhaltenen Bilder ein mit Silberhalogenidbildern vergleichbares Aussehen und eine vergleichbare Haptik aufweisen. Die Haftung des Toners an der Oberfläche ist bei den erfindungsgemäßen Aufzeichnungsmaterialien gut, die Blätter verkleben nicht miteinander, laden sich elektrostatisch nicht auf und ergeben einen gleichmäßigen Tonerübertrag bei Verwendung sowohl von Trockentonern als auch flüssigen Tonern. Glanzstellen durch Tropfen der in den Tonern als Hilfsstoffe verwendeten Öle werden sicher vermieden.It was found that the images obtained using the recording materials according to the invention have a similar appearance with silver halide images and a comparable haptics. The adhesion of the toner to the surface is good in the recording materials according to the invention, the leaves do not stick together, do not accumulate electrostatically and give a uniform Toner transfer using both dry and liquid toners. Gloss spots by drops of the oils used in the toner as auxiliaries are safely avoided.
Claims (17)
Priority Applications (4)
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EP20110160422 EP2506078B1 (en) | 2011-03-30 | 2011-03-30 | Recording material for electrophotographic printing |
US13/434,113 US20120251775A1 (en) | 2011-03-30 | 2012-03-29 | Recording Material for Electrophotographic Printing Process |
CN2012102284348A CN102864690A (en) | 2011-03-30 | 2012-03-30 | Recording material for electrophotographic printing |
JP2012080563A JP2012212141A (en) | 2011-03-30 | 2012-03-30 | Recording material for electrophotographic printing |
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CN104750662A (en) * | 2015-03-27 | 2015-07-01 | 西藏藏医学院 | Rescue, reorganization and protection method for only existing copy of ancient literature on Tibetan medicine theories |
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FR3012153B1 (en) * | 2013-10-21 | 2016-03-04 | Arjo Wiggins Fine Papers Ltd | PAPER, IN PARTICULAR FOR PRINTING AN ELECTRO-CONDUCTIVE LAYER |
WO2018119381A1 (en) * | 2016-12-22 | 2018-06-28 | Jindal Films Americas, Llc | Coated, metallized films |
JP6174283B1 (en) * | 2017-02-24 | 2017-08-02 | 株式会社トライフ | Electrophotographic medium and method for producing electrophotographic medium |
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US20120251775A1 (en) | 2012-10-04 |
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