EP1226959A2 - Porous ink-jet recording material - Google Patents
Porous ink-jet recording material Download PDFInfo
- Publication number
- EP1226959A2 EP1226959A2 EP02000747A EP02000747A EP1226959A2 EP 1226959 A2 EP1226959 A2 EP 1226959A2 EP 02000747 A EP02000747 A EP 02000747A EP 02000747 A EP02000747 A EP 02000747A EP 1226959 A2 EP1226959 A2 EP 1226959A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pigment
- layer
- recording material
- jet recording
- ink jet
- 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 28
- 239000000049 pigment Substances 0.000 claims abstract description 51
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 12
- 239000003431 cross linking reagent Substances 0.000 claims description 11
- 239000004327 boric acid Substances 0.000 claims description 10
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 5
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 3
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 claims description 2
- KAIWMCGGFQMBJA-UHFFFAOYSA-N C(C)O.C(C)O.C(C)O.[Ti+4] Chemical compound C(C)O.C(C)O.C(C)O.[Ti+4] KAIWMCGGFQMBJA-UHFFFAOYSA-N 0.000 claims description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 2
- LCKIEQZJEYYRIY-UHFFFAOYSA-N Titanium ion Chemical compound [Ti+4] LCKIEQZJEYYRIY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052810 boron oxide Inorganic materials 0.000 claims description 2
- 229940015043 glyoxal Drugs 0.000 claims description 2
- MOWNZPNSYMGTMD-UHFFFAOYSA-N oxidoboron Chemical class O=[B] MOWNZPNSYMGTMD-UHFFFAOYSA-N 0.000 claims description 2
- OGHBATFHNDZKSO-UHFFFAOYSA-N propan-2-olate Chemical compound CC(C)[O-] OGHBATFHNDZKSO-UHFFFAOYSA-N 0.000 claims description 2
- OIDPCXKPHYRNKH-UHFFFAOYSA-J chrome alum Chemical compound [K]OS(=O)(=O)O[Cr]1OS(=O)(=O)O1 OIDPCXKPHYRNKH-UHFFFAOYSA-J 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 239000010410 layer Substances 0.000 description 71
- 239000002245 particle Substances 0.000 description 27
- 239000000976 ink Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 14
- 239000000203 mixture Substances 0.000 description 13
- 239000004372 Polyvinyl alcohol Substances 0.000 description 11
- 229920002451 polyvinyl alcohol Polymers 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000011230 binding agent Substances 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000000975 dye Substances 0.000 description 4
- 238000007641 inkjet printing Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 108010010803 Gelatin Proteins 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 229910001593 boehmite Inorganic materials 0.000 description 3
- 229920000159 gelatin Polymers 0.000 description 3
- 239000008273 gelatin Substances 0.000 description 3
- 235000019322 gelatine Nutrition 0.000 description 3
- 235000011852 gelatine desserts Nutrition 0.000 description 3
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229920004890 Triton X-100 Polymers 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 230000002902 bimodal effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 2
- 239000011436 cob Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 239000011163 secondary particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 244000166124 Eucalyptus globulus Species 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-N Formic acid Chemical compound OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 1
- 229920001612 Hydroxyethyl starch Polymers 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 125000004036 acetal group Chemical group 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 210000002196 fr. b Anatomy 0.000 description 1
- 210000003918 fraction a Anatomy 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229940050526 hydroxyethylstarch Drugs 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011369 resultant mixture Substances 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 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 1
- 239000011122 softwood Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
Definitions
- the invention relates to a recording material for the Inkjet printing process with a carrier and at least a lower pigment containing and an upper Layer containing pigment.
- Inkjet printing processes have been in the past few years become very important.
- the recording layers originally had a high proportion of one in water swelling binding agent, for example polyvinyl alcohol and gelatin.
- This binder was either on the base paper or one coated with polyolefin Substrate applied.
- Such materials have the advantage that they shine and very high color densities after the Have pressure. This also applies to systems based on of gelatin.
- a major disadvantage are the long ones Drying times so that when handling the prints surface quality is impaired can.
- US 5 965 244 suggests the manufacture of a porous Marking layer the mixing of porous silica with colloidal silica.
- a wide distribution of the Particle sizes are preferred to the packing density of the particles enlarge and the ink movement causes due to the capillary action of the pores.
- the invention has for its object a recording material for the ink jet printing process, that has a high gloss, high color density, light stability, has a large tonal range and high image resolution.
- the recording material is also intended to be a short Drying time, good water resistance and high ink absorption have.
- an ink jet recording material with a carrier and at least one lower pigment containing and an upper pigment containing layer, wherein the pigment of the upper Layer exists in two grain size fractions (A, B) and a grain size fraction (A) in a range from 10 to 100 nm and the other grain size fraction (B) in one range of 1,000 and 3,000 nm and the pigment of lower layer is different from that of the upper one Layer and its average grain size is different from the average grain sizes of the pigment of the upper layer.
- the different Grain sizes can vary on the formation large secondary particles (agglomerates) one Pigments are based. You can also rely on a Part of the pigment as the primary particle and another part of the pigment is present as a secondary particle.
- the invention Recording material is suitable for inks that Dyes included, and for pigmented inks. Thereby is a general purpose for a series given different printers.
- the two layers build up the ink liquid quickly absorbed by the lower layer, being the dyes or color pigments of the ink on the surface the upper layer. It is believed that by the pigments chosen according to the invention System of cross-linked pores formed in the upper layer becomes.
- the one used according to the invention in the upper layer Pigment shows a distribution of particles in the range of 10 to 100 nm with an average particle size of 70 to 90 nm, particularly preferably 75 to 85 nm, and a further distribution in the range from 1,000 to 3,000 nm with an average particle size of 2,300 to 2,800 nm, especially preferably 2,400 to 2,600 nm.
- the upper layer is the layer on which the ink liquid passes through the Print head of the printer is applied.
- the particle size of the larger pigment particles of the upper one Layer is preferably about 20 to 30 times that Particle size of the smaller pigment particles of the upper one Layer. Usually cause large pigment particles a reduction in gloss. But it was surprising found that the gloss of the recording material of the invention through the large pigment particles in the upper layer is not affected.
- the quantitative ratio of the pigment particles of fraction A to the pigment particles of fraction B is preferably 8: 1 to 20: 1, particularly preferably 10: 1 to 15: 1.
- Pigments of the upper layer suitable according to the invention are, for example, aluminum oxide, aluminum hydroxide, Alumina hydrate, silica, barium sulfate and titanium dioxide.
- the pigment of the top layer is particularly preferred a pigment based on aluminum oxide and predominantly amorphous.
- the average particle size of the pigment particles of the lower one Layer is preferably 3 to 4 times that average particle size of the smaller particles of the upper one Layer.
- the grain size distribution of the pigment of the lower one Layer is preferably in the range of 150 to 1,000 nm with an average particle size of 240 to 350 nm, preferably 260 to 290 nm.
- Pigments of the lower layer suitable according to the invention are, for example, aluminum oxide, aluminum hydroxide, Alumina hydrate, silica, barium sulfate and titanium dioxide.
- Particularly preferred pigment of the lower layer is a pigment based on amorphous silicon dioxide. Such a pigment can be modified cationically his.
- the top and bottom layers contain one in the paper coating shop usual binder.
- the binder is preferably a water-soluble and / or water-dispersible Polymer. Suitable binders are, for example Polyvinyl alcohol, completely or partially saponified, cationically modified polyvinyl alcohol, silyl groups containing polyvinyl alcohol, containing acetal groups Polyvinyl alcohol, gelatin, polyvinyl pyrrolidone, Starch, hydroxyethyl starch, carboxymethyl cellulose, Polyethylene oxide, polyethylene glycol, styrene / butadiene latex and styrene / acrylate latex.
- the amount of binder in the top and bottom layers are 5 each to 35, preferably 10 to 30 wt.%, Based on the weight the dried layer.
- the top and bottom layers can be used for ink receiving layers Contain usual additives and auxiliaries such as surfactants, crosslinking agents and color fixing agents such as polyammonium compounds.
- a layer containing crosslinking agent is formed between the upper and the lower layer.
- Suitable crosslinking agents are, for example, epichlorohydrin, boric acid, boric acid salts, boron oxides, 3-glycidoxypropyltimethoxysilane, titanium (IV) diisopropoxydis (acetylacetonate), titanium (IV) (triethanol) aminate) isopropoxide, glyoxal and chromium alum.
- the application quantity can be 0.25 to 0.5 g / m 2 .
- the crosslinking agent layer thus has the function of a barrier layer for the binder. Thereby the recording material has a smoother surface, which contributes to increasing the gloss overall.
- the crosslinking agent can also be the pigment / binder mixture, that for the formation of the upper and / or lower Layer is used, added and mixed with this be applied to the carrier.
- the amount of Crosslinking agent in the layer can contain 0.1 to 2.0% by weight, in particular 0.2 to 1.5% by weight, based on the weight the dried layer.
- the lower layer can be formed directly on the carrier his.
- the thickness of the lower layer can be 10 to 60 microns, preferably 20 to 50 microns.
- the upper Layer can be directly on the bottom layer or on the Crosslinking agent-containing layer can be formed.
- the thickness of the top layer can be 10 to 60 ⁇ m, preferably 20 to 50 microns.
- any base paper can be used as a carrier material be used.
- the paper can be acid or neutral sized his.
- the base paper is said to have high dimensional stability have and should be able to contain the contained in the ink Liquid without absorbing waves.
- papers with high dimensional stability from pulp mixtures from Softwood pulps and eucalyptus pulps are special suitable.
- the revelation of the DE 196 02 793 B1 which is a base paper for a Ink jet recording material describes.
- the raw paper can contain other auxiliary materials that are common in the paper industry and additives such as dyes, optical brighteners or defoamers included. The use of reject pulp and refurbished waste paper is possible.
- a paper coated with barium sulfate is also suitable.
- Plastic films, for example made of polyester or polyvinyl chloride, are also suitable as supports.
- the basis weight of the carrier can be 80 to 300 g / m 2 .
- paper with a basis weight of 100 g / m 2, neutral glue with alkyl ketene dimer and coated on both sides with polyethylene was used as a support.
- the polyethylene is of the LDPE type.
- the front coating also contains 0.95% by weight of an optical brightener, 10% by weight of titanium dioxide, 4% by weight of lubricant and 10.8% by weight, based in each case on the mass of the layer, of a pigment concentrate of 10% ultramarine and 90% LDPE.
- silica, polyvinyl alcohol and boric acid were mixed, heated to 40 ° C. and stirred for 30 minutes. Based on the mass of the mixture obtained, 0.05% by weight of Triton X100 was added and the preparation was adjusted to a solids content of 15%.
- the resultant mixture for the lower layer was slit-coated on the polyethylene-coated support and dried at 100 ° C for three minutes. The dry application weight was 18 g / m 2 .
- component Lower class upper layer Average silica Particle size 250 nm 71.0 - Alumina middle Particle size 80 nm (A), 2500 nm (B) ratio A: B 15: 1 - 86.6 Polyvinyl alcohol saponification degree 88 mol% 28.5 12.4 boric acid 0.5 1.0
- the values in the table are percentages by weight. she refer to the dry weight of the layer.
- the upper and lower layers have the same composition as in Example 1, with the difference that the upper layer contains no boric acid. Instead, a 5% boric acid solution was applied as an intermediate coat to the support coated with the lower layer in order to obtain a coat with an application thickness of 0.4 g / m 2 .
- the upper layer with the composition known from Example 1 was applied to the crosslinking agent intermediate layer after the wet-on-wet coating.
- the lower layer of Comparative Example 1 has the identical composition as in Example 1. She is applied in the same layer thickness.
- aluminum oxide with an average particle size of 160 to 170 nm, polyvinyl alcohol and boric acid were mixed and heated to 40.degree. The mixture was stirred for 30 minutes. The resulting mixture was applied to the previously coated support and then dried at 100 ° C for four minutes. The dry application weight was 20 g / m 2 .
- the aluminum oxide used here is not a so-called bimodal alumina with particle size clusters at two different places on the size scale monodisperse alumina.
- Aluminum oxide with an average particle size of 1.56 ⁇ m, polyvinyl alcohol and boric acid were mixed and heated to 40 ° C. The mixture was stirred for 30 minutes and 0.05% Triton X100 was added. The resulting mixture for the lower layer was applied to the polyethylene-coated support and dried at 100 ° C for three minutes. The dry application weight was 18 g / m 2 .
- the values in the table are percentages by weight. she refer to the dry weight of the layer.
- the recording materials obtained were examined on color density, gloss and print gloss, absorbency, Water resistance and light resistance.
- Color Density - Color density was measured using an X-Rite Densitometer Type 428 on the colors cyan, magenta, yellow and black. The tests are based on color prints from various printer types. The higher the value for a certain color, the better the color density.
- Printing gloss The printing gloss was measured with a gloss meter from Dr. Lange GmbH measured according to DIN 67530 at angles of 20 ° and 60 °. The measurement was made on a part of the recording sheet printed in black.
Landscapes
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Ink Jet (AREA)
- Duplication Or Marking (AREA)
Abstract
Ein Tintenstrahl-Aufzeichnungsmaterial mit einem Träger und mindestens einer unteren Pigment enthaltenden und einer oberen Pigment enthaltenden Schicht enthält in der oberen Schicht ein Pigment in zwei Korngrößenfraktionen (A,B) vorliegt und eine Korngrößenfraktion (A) in einem Bereich von 10 bis 100 nm und die andere Korngrößenfraktion (B) in einem Bereich von 1.000 und 3.000 nm liegt und das Pigment der unteren Schicht verschieden ist von dem der oberen Schicht und dessen mittlere Korngröße verschieden ist von den mittleren Korngrößen des Pigments der oberen Schicht.An ink jet recording material with a support and at least one lower pigment-containing and one upper pigment-containing layer contains a pigment in the upper layer in two grain size fractions (A, B) and a grain size fraction (A) in a range from 10 to 100 nm and the other grain size fraction (B) is in a range of 1,000 and 3,000 nm and the pigment of the lower layer is different from that of the upper layer and its mean grain size is different from the mean grain sizes of the pigment of the upper layer.
Description
Die Erfindung betrifft ein Aufzeichnungsmaterial für das Tintenstrahl-Druckverfahren mit einem Träger und mindestens einer unteren Pigment enthaltenden und einer oberen Pigment enthaltenden Schicht.The invention relates to a recording material for the Inkjet printing process with a carrier and at least a lower pigment containing and an upper Layer containing pigment.
Beim Tintenstrahl-Druckverfahren (Ink-Jet) werden winzige Tintentröpfchen mit Hilfe verschiedener, bereits mehrfach beschriebener Techniken auf ein Aufzeichnungsmaterial gebracht und von diesem aufgenommen.With the ink jet printing process (ink jet) tiny Ink droplets with the help of different, already several times techniques described on a recording material and taken up by this.
An das Aufzeichnungsmaterial werden unterschiedliche Anforderungen gestellt wie hohe Farbdichte der gedruckten Punkte, eine hohe Tintenaufnahmefähigkeit, kurze Trocknungszeit und damit verbundene ausreichende Wischfestigkeit, eine nicht über das notwendige Ausmaß hinausgehende Farbstoffdiffusion in Querrichtung der gedruckten Punkte (Bleed) sowie ein geringer Mottle und eine hohe Wasserfestigkeit. Weitere Anforderungen, insbesondere für fotoähnliche Drucke, ist ein gleichmäßiger Druckglanz und Oberflächenglanz des Aufzeichnungsmaterials.Different requirements are imposed on the recording material posed like high color density of the printed Dots, high ink absorption, short Drying time and associated sufficient smudge resistance, one that does not go beyond what is necessary Dye diffusion in the transverse direction of the printed Bleed, low mottle and high Water resistance. Other requirements, especially for photo-like prints, is an even print gloss and Surface gloss of the recording material.
Tintenstrahl-Druckverfahren sind in den vergangenen Jahren sehr wichtig geworden. Die Aufzeichnungsschichten hatten ursprünglich einen hohen Anteil eines in Wasser quellenden Bindungsmittels, beispielsweise Polyvinylalkohol und Gelatine. Dieses Bindemittel wurde entweder auf das Rohpapier oder ein mit Polyolefin beschichtetes Substrat aufgetragen. Solche Materialien haben den Vorteil, daß sie glänzen und sehr hohe Farbdichten nach dem Druck aufweisen. Dies gilt auch für Systeme auf der Basis von Gelatine. Ein Hauptnachteil sind die langen Trocknungszeiten, so daß es bei der Handhabung der Drucke zu Beeinträchtigungen der Oberflächenqualität kommen kann.Inkjet printing processes have been in the past few years become very important. The recording layers originally had a high proportion of one in water swelling binding agent, for example polyvinyl alcohol and gelatin. This binder was either on the base paper or one coated with polyolefin Substrate applied. Such materials have the advantage that they shine and very high color densities after the Have pressure. This also applies to systems based on of gelatin. A major disadvantage are the long ones Drying times so that when handling the prints surface quality is impaired can.
In den vergangenen Jahren ging die Entwicklung zu sogenannten mehr mesoporösen Systemen, die aufgrund von Hohlräumen in der aufgetragenen Schicht die Tinte während des Druckens rasch absorbieren können und insbesondere geeignet sind für Druckköpfe vom Piezo-Typ. Diese Aufzeichnungsmaterialien enthalten im allgemeinen einen hohen Pigmentanteil. Die Pigmente weisen eine Größe im Nanometerbereich, insbesondere unter der Wellenlänge des sichtbaren Lichts auf, sind also kleiner als 400 nm, um eine glänzende Oberfläche zu gewährleisten. Diese Aufzeichnungsmaterialien weisen eine hervorragende Bildqualität aufgrund der guten Farbfixierung auf. Sie besitzen eine kurze Trocknungszeit und Probleme mit der Koaleszenz und Bleed treten nicht auf. Solche mesoporösen Systeme reagieren aber empfindlich auf die Exposition mit Licht und Ozon. Silbersalzfotografien sind lichtecht über einen Zeitraum von 15 bis 20 Jahre und Ink-Jet-Bilder sollten mindestens ebenso lange lichtecht sein.In recent years, the development has gone to so-called more mesoporous systems due to voids the ink in the applied layer during the Printing can absorb quickly and particularly suitable are for piezo type printheads. These recording materials generally contain a high Pigment content. The pigments have a size in the nanometer range, especially below the wavelength of the visible Lights on, are smaller than 400 nm, around one to ensure a shiny surface. These recording materials exhibit excellent image quality due to the good color fixation. You have one short drying time and problems with coalescence and Bleed do not occur. Such mesoporous systems respond but sensitive to exposure to light and Ozone. Silver salt photographs are lightfast over one Period of 15 to 20 years and ink jet images should be lightfast for at least as long.
Poröse Aufzeichnungsschichten, die Böhmit enthalten, sind in den US-Patenten 4 879 155, 5 104 730, 5 264 275 und 5 275 867 beschrieben. Die EP 0 631 013 B1 beschreibt ein Böhmit, das auf eine poröse Silikaschicht zur Herstellung eines Ink-Jet-Aufzeichnungsmaterials aufgetragen ist. Böhmitpigmente zeigen jedoch häufig Probleme in Bezug auf die Lichtechtheit von Magenta-Farben. Porous recording layers containing boehmite in U.S. Patents 4,879,155, 5,104,730, 5,264,275 and 5 275 867. EP 0 631 013 B1 describes a Boehmite, which is made on a porous silica layer an ink jet recording material is applied. Boehmite pigments, however, often show problems related to the lightfastness of magenta colors.
Die US 5 965 244 schlägt zur Herstellung einer porösen Auszeichnungsschicht das Mischen von poröser Kieselerde mit kolloidaler Kieselerde vor. Eine weite Verteilung der Partikelgrößen ist bevorzugt, um die Verpackungsdichte der Teilchen zu vergrößern und die Tintenbewegung, verursacht durch die Kapillarwirkung der Poren, zu erhöhen.US 5 965 244 suggests the manufacture of a porous Marking layer the mixing of porous silica with colloidal silica. A wide distribution of the Particle sizes are preferred to the packing density of the particles enlarge and the ink movement causes due to the capillary action of the pores.
Der Erfindung liegt die Aufgabe zugrunde, ein Aufzeichnungsmaterial für das Ink-Jet-Druckverfahren bereitzustellen, das einen hohen Glanz, hohe Farbdichte, Lichtstabilität, großen Tonumfang und hohe Bildauflösung aufweist. Das Aufzeichnungsmaterial soll ferner eine kurze Trocknungszeit, gute Wasserfestigkeit und eine hohe Tintenaufnahmefähigkeit besitzen.The invention has for its object a recording material for the ink jet printing process, that has a high gloss, high color density, light stability, has a large tonal range and high image resolution. The recording material is also intended to be a short Drying time, good water resistance and high ink absorption have.
Gelöst werden diese Aufgaben durch ein Tintenstrahl-Aufzeichnungsmaterial mit einem Träger und mindestens einer unteren Pigment enthaltenden und einer oberen Pigment enthaltenden Schicht, worin das Pigment der oberen Schicht in zwei Korngrößenfraktionen (A,B) vorliegt und eine Korngrößenfraktionen (A) in einem Bereich von 10 bis 100 nm und die andere Korngrößenfraktion (B) in einem Bereich von 1.000 und 3.000 nm liegt und das Pigment der unteren Schicht verschieden ist von dem der oberen Schicht und dessen mittlere Korngröße verschieden ist von den mittleren Korngrößen des Pigments der oberen Schicht.These tasks are solved by an ink jet recording material with a carrier and at least one lower pigment containing and an upper pigment containing layer, wherein the pigment of the upper Layer exists in two grain size fractions (A, B) and a grain size fraction (A) in a range from 10 to 100 nm and the other grain size fraction (B) in one range of 1,000 and 3,000 nm and the pigment of lower layer is different from that of the upper one Layer and its average grain size is different from the average grain sizes of the pigment of the upper layer.
Ein solches Pigment mit Häufungen von Korngrößen an zwei unterschiedlichen Stellen der Teilchengrößenskala wird erfindungsgemäß als bimodales Pigment bezeichnet. Die unterschiedlichen Korngrößen können auf der Bildung unterschiedlich großer Sekundärteilchen (Agglomerate) eines Pigments beruhen. Sie können auch darauf beruhen, daß ein Teil des Pigments als Primärteilchen und ein anderer Teil des Pigments als Sekundärteilchen vorliegt. Such a pigment with clusters of grain sizes on two different places on the particle size scale referred to according to the invention as a bimodal pigment. The different Grain sizes can vary on the formation large secondary particles (agglomerates) one Pigments are based. You can also rely on a Part of the pigment as the primary particle and another part of the pigment is present as a secondary particle.
Überraschend hat sich herausgestellt, daß das erfindungsgemäße Aufzeichnungsmaterial geeignet ist für Tinten, die Farbstoffe enthalten, und für pigmenthaltige Tinten. Dadurch ist eine universelle Verwendbarkeit für eine Reihe verschiedener Drucker gegeben. Durch den erfindungsgemäßen Aufbau der beiden Schichten wird die Tintenflüssigkeit schnell von der unteren Schicht aufgenommen, wobei die Farbstoffe oder Farbpigmente der Tinte an der Oberfläche der oberen Schicht fixiert werden. Es wird vermutet, daß durch die erfindungsgemäß gewählten Pigmente ein System vernetzter Poren in der oberen Schicht gebildet wird.It has surprisingly been found that the invention Recording material is suitable for inks that Dyes included, and for pigmented inks. Thereby is a general purpose for a series given different printers. By the invention The two layers build up the ink liquid quickly absorbed by the lower layer, being the dyes or color pigments of the ink on the surface the upper layer. It is believed that by the pigments chosen according to the invention System of cross-linked pores formed in the upper layer becomes.
Das erfindungsgemäß in der oberen Schicht eingesetzte Pigment zeigt eine Verteilung von Teilchen im Bereich von 10 bis 100 nm mit einer mittleren Teilchengröße von 70 bis 90 nm, besonders bevorzugt 75 bis 85 nm, und eine weitere Verteilung im Bereich von 1.000 bis 3.000 nm mit einer mittleren Teilchengröße von 2.300 bis 2.800 nm, besonders bevorzugt 2.400 bis 2.600 nm. Die obere Schicht ist die Schicht, auf die die Tintenflüssigkeit durch den Druckkopf des Druckers aufgebracht wird.The one used according to the invention in the upper layer Pigment shows a distribution of particles in the range of 10 to 100 nm with an average particle size of 70 to 90 nm, particularly preferably 75 to 85 nm, and a further distribution in the range from 1,000 to 3,000 nm with an average particle size of 2,300 to 2,800 nm, especially preferably 2,400 to 2,600 nm. The upper layer is the layer on which the ink liquid passes through the Print head of the printer is applied.
Die Teilchengröße der größeren Pigmentteilchen der oberen Schicht beträgt vorzugsweise das etwa 20- bis 30fache der Teilchengröße der kleineren Pigmentteilchen der oberen Schicht. Üblicherweise verursachen große Pigmentteilchen eine Verringerung des Glanzes. Überraschend wurde aber festgestellt, daß der Glanz des erfindungsgemäßen Aufzeichnungsmaterials durch die großen Pigmentteilchen in der oberen Schicht nicht beeinträchtigt wird. The particle size of the larger pigment particles of the upper one Layer is preferably about 20 to 30 times that Particle size of the smaller pigment particles of the upper one Layer. Usually cause large pigment particles a reduction in gloss. But it was surprising found that the gloss of the recording material of the invention through the large pigment particles in the upper layer is not affected.
Das Mengenverhältnis der Pigmentteilchen der Fraktion A zu den Pigmentteilchen der Fraktion B beträgt vorzugsweise 8:1 bis 20:1, besonders bevorzugt 10:1 bis 15:1.The quantitative ratio of the pigment particles of fraction A to the pigment particles of fraction B is preferably 8: 1 to 20: 1, particularly preferably 10: 1 to 15: 1.
Erfindungsgemäß geeignete Pigmente der oberen Schicht sind beispielsweise Aluminiumoxid, Aluminiumhydroxid, Aluminiumoxidhydrat, Kieselsäure, Bariumsulfat und Titandioxid. Das Pigment der oberen Schicht ist besonders bevorzugt ein Pigment auf der Basis von Aluminiumoxid und vorwiegend amorph.Pigments of the upper layer suitable according to the invention are, for example, aluminum oxide, aluminum hydroxide, Alumina hydrate, silica, barium sulfate and titanium dioxide. The pigment of the top layer is particularly preferred a pigment based on aluminum oxide and predominantly amorphous.
Die mittlere Teilchengröße der Pigmentteilchen der unteren Schicht beträgt vorzugsweise das 3- bis 4fache der mittleren Teilchengröße der kleineren Teilchen der oberen Schicht. Die Korngrößenverteilung des Pigments der unteren Schicht liegt vorzugsweise im Bereich von 150 bis 1.000 nm mit einer mittleren Teilchengröße von 240 bis 350 nm, vorzugsweise 260 bis 290 nm.The average particle size of the pigment particles of the lower one Layer is preferably 3 to 4 times that average particle size of the smaller particles of the upper one Layer. The grain size distribution of the pigment of the lower one Layer is preferably in the range of 150 to 1,000 nm with an average particle size of 240 to 350 nm, preferably 260 to 290 nm.
Erfindungsgemäß geeignete Pigmente der unteren Schicht sind beispielsweise Aluminiumoxid, Aluminiumhydroxid, Aluminiumoxidhydrat, Kieselsäure, Bariumsulfat und Titandioxid. Besonders bevorzugtes Pigment der unteren Schicht ist ein Pigment auf der Basis von amorphem Siliciumdioxid. Ein solches Pigment kann kationisch modifiziert sein.Pigments of the lower layer suitable according to the invention are, for example, aluminum oxide, aluminum hydroxide, Alumina hydrate, silica, barium sulfate and titanium dioxide. Particularly preferred pigment of the lower layer is a pigment based on amorphous silicon dioxide. Such a pigment can be modified cationically his.
Die obere und die untere Schicht enthalten ein in der Papierstreicherei übliches Bindemittel. Das Bindemittel ist vorzugsweise ein wasserlösliches und/oder wasserdispergierbares Polymer. Geeignete Bindemittel sind beispielsweise Polyvinylalkohol, vollständig oder teilweise verseift, kationisch modifizierter Polyvinylalkohol, Silylgruppen aufweisender Polyvinylalkohol, Acetalgruppen aufweisender Polyvinylalkohol, Gelatine, Polyvinylpyrrolidon, Stärke, Hydroxyethylstärke, Carboxymethylcellulose, Polyethylenoxid, Polyethylenglykol, Styrol/Butadien-Latex und Styrol/Acrylat-Latex. Die Menge des Bindemittels in der oberen und in der unteren Schicht beträgt jeweils 5 bis 35, vorzugsweise 10 bis 30 Gew.%, bezogen auf das Gewicht der getrockneten Schicht.The top and bottom layers contain one in the paper coating shop usual binder. The binder is preferably a water-soluble and / or water-dispersible Polymer. Suitable binders are, for example Polyvinyl alcohol, completely or partially saponified, cationically modified polyvinyl alcohol, silyl groups containing polyvinyl alcohol, containing acetal groups Polyvinyl alcohol, gelatin, polyvinyl pyrrolidone, Starch, hydroxyethyl starch, carboxymethyl cellulose, Polyethylene oxide, polyethylene glycol, styrene / butadiene latex and styrene / acrylate latex. The amount of binder in the top and bottom layers are 5 each to 35, preferably 10 to 30 wt.%, Based on the weight the dried layer.
Die obere und die untere Schicht können für Tintenaufnahmeschichten übliche Additive und Hilfsmittel enthalten wie Tenside, Vernetzungsmittel und farbfixierende Mittel wie Polyammoniumverbindungen.The top and bottom layers can be used for ink receiving layers Contain usual additives and auxiliaries such as surfactants, crosslinking agents and color fixing agents such as polyammonium compounds.
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung ist zwischen der oberen und der unteren Schicht eine Vernetzungsmittel enthaltende Schicht ausgebildet. Geeignete Vernetzungsmittel sind beispielsweise Epichlorhydrin, Borsäure, Borsäuresalze, Boroxide, 3-Glycidoxypropyltimethoxysilan, Titan(IV)diisopropoxydbis(acetylacetonat), Titan(IV)(triethanol)aminat)-isopropoxyd, Glyoxal und Chromalaun. Die Auftragsmenge kann 0,25 bis 0,5 g/m2 betragen.According to a further preferred embodiment of the invention, a layer containing crosslinking agent is formed between the upper and the lower layer. Suitable crosslinking agents are, for example, epichlorohydrin, boric acid, boric acid salts, boron oxides, 3-glycidoxypropyltimethoxysilane, titanium (IV) diisopropoxydis (acetylacetonate), titanium (IV) (triethanol) aminate) isopropoxide, glyoxal and chromium alum. The application quantity can be 0.25 to 0.5 g / m 2 .
Es wurde festgestellt, daß durch eine Vernetzungsmittelschicht zwischen unterer und oberer Schicht das Absinken des Bindemittels von der oberen in die untere Schicht vermieden wird. Die Vernetzungsmittelschicht hat somit die Funktion einer Sperrschicht für das Bindemittel. Dadurch hat das Aufzeichnungsmaterial eine glattere Oberfläche, was zur Erhöhung des Glanzes insgesamt beiträgt.It was found that through a crosslinking agent layer the sinking between the lower and upper layers of the binder from the top to the bottom layer is avoided. The crosslinking agent layer thus has the function of a barrier layer for the binder. Thereby the recording material has a smoother surface, which contributes to increasing the gloss overall.
Das Vernetzungsmittel kann auch dem Pigment/ Bindemittelgemisch, das zur Ausbildung der oberen und/oder unteren Schicht eingesetzt wird, zugefügt sein und im Gemisch mit diesem auf dem Träger aufgebracht sein. Die Menge des Vernetzungsmittels in der Schicht kann 0,1 bis 2,0 Gew.%, insbesondere 0,2 bis 1,5 Gew.%, bezogen auf das Gewicht der getrockneten Schicht, betragen.The crosslinking agent can also be the pigment / binder mixture, that for the formation of the upper and / or lower Layer is used, added and mixed with this be applied to the carrier. The amount of Crosslinking agent in the layer can contain 0.1 to 2.0% by weight, in particular 0.2 to 1.5% by weight, based on the weight the dried layer.
Die untere Schicht kann direkt auf dem Träger ausgebildet sein. Die Auftragsdicke der unteren Schicht kann 10 bis 60 µm, vorzugsweise 20 bis 50 µm, betragen. Die obere Schicht kann direkt auf der unteren Schicht oder auf der Vernetzungsmittel enthaltenden Schicht ausgebildet sein. Die Auftragsdicke der oberen Schicht kann 10 bis 60 µm, vorzugsweise 20 bis 50 µm, betragen.The lower layer can be formed directly on the carrier his. The thickness of the lower layer can be 10 to 60 microns, preferably 20 to 50 microns. The upper Layer can be directly on the bottom layer or on the Crosslinking agent-containing layer can be formed. The thickness of the top layer can be 10 to 60 µm, preferably 20 to 50 microns.
Als Trägermaterial kann grundsätzlich jedes Rohpapier verwendet werden. Bevorzugt werden oberflächengeleimte, kalandrierte oder nicht kalandrierte oder stark geleimte Rohpapiere. Das Papier kann sauer oder neutral geleimt sein. Das Rohpapier soll eine hohe Dimensionsstabilität aufweisen und soll in Lage sein, die in der Tinte enthaltene Flüssigkeit ohne Wellenbildung aufzunehmen. Papiere mit hoher Dimensionsstabilität aus Zellstoffgemischen von Nadelholzzellstoffen und Eukalyptuszellstoffen sind insbesondere geeignet. Insoweit wird auf die Offenbarung der DE 196 02 793 B1 verwiesen, die ein Rohpapier für ein Tintenstrahl-Aufzeichnungsmaterial beschreibt. Das Rohpapier kann weitere, in der Papierindustrie üblichen Hilfsstoffe und Additive wie Farbstoffe, optische Aufheller oder Entschäumer enthalten. Auch der Einsatz von Ausschußzellstoff und aufgearbeiteten Altpapier ist möglich.In principle, any base paper can be used as a carrier material be used. Surface-sized, calendered or non-calendered or heavily glued Base papers. The paper can be acid or neutral sized his. The base paper is said to have high dimensional stability have and should be able to contain the contained in the ink Liquid without absorbing waves. papers with high dimensional stability from pulp mixtures from Softwood pulps and eucalyptus pulps are special suitable. In this respect, the revelation of the DE 196 02 793 B1, which is a base paper for a Ink jet recording material describes. The raw paper can contain other auxiliary materials that are common in the paper industry and additives such as dyes, optical brighteners or defoamers included. The use of reject pulp and refurbished waste paper is possible.
Als Trägermaterial besonders geeignet ist ein einseitig oder beidseitig mit Polyolefinen, insbesondere mit Polyethylen, beschichtetes Papier. Geeignet ist ferner ein mit Bariumsulfat beschichtetes Papier. Auch Kunststoffolien, beispielsweise aus Polyester oder Polyvinylchlorid, sind als Träger geeignet. Das Flächengewicht des Trägers kann 80 bis 300 g/m2 betragen.A paper that is coated on one or both sides with polyolefins, in particular with polyethylene, is particularly suitable as a carrier material. A paper coated with barium sulfate is also suitable. Plastic films, for example made of polyester or polyvinyl chloride, are also suitable as supports. The basis weight of the carrier can be 80 to 300 g / m 2 .
Zum Auftragen der Schichten kann jedes beliebige, allgemein bekannte Auftrags- und Dosierverfahren verwendet werden wie Walzenauftrag-, Gravur-, Nippverfahren und Luftbürsten- oder Rollrakeldosierung. Besonders bevorzugt wird das Auftragen mit Hilfe einer Kaskaden-Beschichtungsanlage oder eines Schlitzgießers.Any, general, can be used to apply the layers known application and dosing processes used are like roller application, engraving, nipping and Air brush or roller doctor metering. Particularly preferred is the application with the help of a cascade coating system or a slot caster.
Zur Einstellung des Curlverhaltens, der Antistatik und der Transportfähigkeit im Drucker kann die Rückseite mit einer gesonderten Funktionsschicht versehen werden. Geeignete Rückseitenschichten werden in den DE 43 08 274 A1 und DE 44 28 941 A1 beschrieben, auf deren Offenbarung Bezug genommen wird.For setting the curl behavior, antistatic and the back of the printer can be transported in the printer be provided with a separate functional layer. suitable Back layers are in the DE 43 08 274 A1 and DE 44 28 941 A1 described on their Disclosure is referred.
Die folgenden Beispiele dienen der weiteren Erläuterung der Erfindung.The following examples are provided for further explanation the invention.
Für die folgenden Prüfungen wurde ein mit Alkylketendimer neutral geleimtes und beidseitig mit Polyethylen beschichtetes Papier eines Flächengewichts von 100 g/m2 als Träger eingesetzt. Das Polyethylen ist ein solches vom Typ LDPE. Die Vorderseitenbeschichtung enthält ferner 0,95 Gew.% eines optischen Aufhellers, 10 Gew.% Titandioxid, 4 Gew.% Gleitmittel und 10,8 Gew.%, jeweils bezogen auf die Masse der Schicht, eines Pigmentkonzentrats aus 10% Ultramarin und 90 % LDPE. For the following tests, paper with a basis weight of 100 g / m 2, neutral glue with alkyl ketene dimer and coated on both sides with polyethylene, was used as a support. The polyethylene is of the LDPE type. The front coating also contains 0.95% by weight of an optical brightener, 10% by weight of titanium dioxide, 4% by weight of lubricant and 10.8% by weight, based in each case on the mass of the layer, of a pigment concentrate of 10% ultramarine and 90% LDPE.
Zur Herstellung der unteren Schicht wurden Kieselsäure, Polyvinylalkohol und Borsäure vermischt, auf 40°C erwärmt und 30 Minuten lang gerührt. Bezogen auf die Masse des erhaltenen Gemischs wurden 0,05 Gew.% Triton X100 zugefügt und die Zubereitung auf einen Feststoffgehalt von 15% eingestellt. Das erhaltene Gemisch für die untere Schicht wurde auf den mit Polyethylen beschichteten Träger mit einem Schlitzgießer aufgetragen und drei Minuten lang bei 100°C getrocknet. Das trockene Auftragsgewicht betrug 18 g/m2.To produce the lower layer, silica, polyvinyl alcohol and boric acid were mixed, heated to 40 ° C. and stirred for 30 minutes. Based on the mass of the mixture obtained, 0.05% by weight of Triton X100 was added and the preparation was adjusted to a solids content of 15%. The resultant mixture for the lower layer was slit-coated on the polyethylene-coated support and dried at 100 ° C for three minutes. The dry application weight was 18 g / m 2 .
Zur Herstellung der Masse für die obere Schicht wurden Aluminiumoxid, Polyvinylalkohol und Borsäure vermischt und auf 40°C erwärmt. Das Gemisch wurde 30 Minuten lang gerührt und auf einen Feststoffgehalt von 20 % eingestellt. Die Masse für die obere Schicht wurde auf den zuvor beschichteten Träger mit einem Schlitzgießer aufgetragen und anschließend vier Minuten lang bei 100°C getrocknet. Das trockene Auftragsgewicht betrug 20 g/m2.To produce the mass for the upper layer, aluminum oxide, polyvinyl alcohol and boric acid were mixed and heated to 40 ° C. The mixture was stirred for 30 minutes and adjusted to a solids content of 20%. The mass for the upper layer was applied to the previously coated support with a slot coaster and then dried at 100 ° C. for four minutes. The dry application weight was 20 g / m 2 .
In der folgenden Tabelle 1 sind die Angaben zur Zusammensetzung
der Schichten zusammengefaßt.
Die Werte in der Tabelle sind Gewichtsprozentangaben. Sie beziehen sich auf das Trockengewicht der Schicht.The values in the table are percentages by weight. she refer to the dry weight of the layer.
Die obere und die untere Schicht haben die gleiche Zusammensetzung wie in Beispiel 1 mit dem Unterschied, daß die obere Schicht keine Borsäure enthält. Stattdessen wurde auf den mit der unteren Schicht beschichteten Träger als Zwischenstrich eine 5%ige Borsäurelösung aufgetragen, um einen Strich mit einer Auftragstärke von 0,4 g/m2 zu erhalten. Das Auftragen der oberen Schicht mit der aus Beispiel 1 bekannten Zusammensetzung auf die Vernetzungsmittel-Zwischenschicht erfolgte nach dem Wet-on-wet Coating.The upper and lower layers have the same composition as in Example 1, with the difference that the upper layer contains no boric acid. Instead, a 5% boric acid solution was applied as an intermediate coat to the support coated with the lower layer in order to obtain a coat with an application thickness of 0.4 g / m 2 . The upper layer with the composition known from Example 1 was applied to the crosslinking agent intermediate layer after the wet-on-wet coating.
Die untere Schicht des Vergleichsbeispiels 1 weist die identische Zusammensetzung wie in Beispiel 1 auf. Sie wird in derselben Schichtdicke aufgetragen. The lower layer of Comparative Example 1 has the identical composition as in Example 1. she is applied in the same layer thickness.
Zur Herstellung der oberen Schicht wurden Aluminiumoxid einer mittleren Teilchengröße von 160 bis 170 nm, Polyvinylalkohol und Borsäure vermischt und auf 40°C erwärmt. Das Gemisch wurde 30 Minuten lang gerührt. Das erhaltene Gemisch wurde auf den zuvor beschichteten Träger aufgetragen und anschließend vier Minuten lang bei 100°C getrocknet. Das trockene Auftragsgewicht betrug 20 g/m2.To produce the upper layer, aluminum oxide with an average particle size of 160 to 170 nm, polyvinyl alcohol and boric acid were mixed and heated to 40.degree. The mixture was stirred for 30 minutes. The resulting mixture was applied to the previously coated support and then dried at 100 ° C for four minutes. The dry application weight was 20 g / m 2 .
Das hier verwendete Aluminiumoxid ist kein sogenanntes bimodales Aluminiumoxid mit Häufungen der Teilchengröße an zwei verschiedenen Stellen der Größenskala sondern ein monodisperses Aluminiumoxid.The aluminum oxide used here is not a so-called bimodal alumina with particle size clusters at two different places on the size scale monodisperse alumina.
Aluminiumoxid mit einer mittleren Teilchengröße von 1,56 µm, Polyvinylalkohol und Borsäure wurden gemischt und auf 40°C erwärmt. Es wurde 30 Minuten lang gerührt und 0,05 % Triton X100 zugemischt. Das erhaltene Gemisch für die untere Schicht wurde auf den mit Polyethylen beschichteten Träger aufgetragen und drei Minuten lang bei 100°C getrocknet. Das trockene Auftragsgewicht betrug 18 g/m2.Aluminum oxide with an average particle size of 1.56 µm, polyvinyl alcohol and boric acid were mixed and heated to 40 ° C. The mixture was stirred for 30 minutes and 0.05% Triton X100 was added. The resulting mixture for the lower layer was applied to the polyethylene-coated support and dried at 100 ° C for three minutes. The dry application weight was 18 g / m 2 .
In der folgenden Tabelle 1 sind die Angaben zur Zusammensetzung
der Schichten zusammengefaßt.
Die Werte in der Tabelle sind Gewichtsprozentangaben. Sie beziehen sich auf das Trockengewicht der Schicht.The values in the table are percentages by weight. she refer to the dry weight of the layer.
Die erhaltenen Aufzeichnungsmaterialien wurden geprüft auf Farbdichte, Glanz und Druckglanz, Absorptionsfähigkeit, Wasserfestigkeit und Lichtfestigkeit.The recording materials obtained were examined on color density, gloss and print gloss, absorbency, Water resistance and light resistance.
Farbdichte - Die Farbdensität wurde mit einem X-Rite Densitometer Typ 428 an den Farben Cyan, Magenta, Gelb und Schwarz gemessen. Grundlage der Prüfungen sind Farbdrucke von verschiedenen Druckertypen. Je höher der Wert bei einer bestimmten Farbe desto besser die Farbdichte. Color Density - Color density was measured using an X-Rite Densitometer Type 428 on the colors cyan, magenta, yellow and black. The tests are based on color prints from various printer types. The higher the value for a certain color, the better the color density.
Glanz - Der Glanz wurde mit einem Glanzmeßgerät der Dr. Lange GmbH nach DIN 67530 bei einem Winkel von 60° gemessen. Die Messung wurde am unbedruckten Aufzeichnungsblatt durchgeführt. Gloss - The gloss was measured with a gloss meter from Dr. Lange GmbH measured according to DIN 67530 at an angle of 60 °. The measurement was carried out on the unprinted recording sheet.
Druckglanz - Der Druckglanz wurde mit einem Glanzmeßgerät der Dr. Lange GmbH nach DIN 67530 bei Winkeln von 20° und 60° gemessen. Die Messung wurde auf einem schwarzbedruckten Teil des Aufzeichnungsblatts vorgenommen. Printing gloss - The printing gloss was measured with a gloss meter from Dr. Lange GmbH measured according to DIN 67530 at angles of 20 ° and 60 °. The measurement was made on a part of the recording sheet printed in black.
Absorptionsfähigkeit - Die Absorptionsfähigkeit wurde mit dem Standard Cobb60 Test unter Verwendung von demineralisiertem Wasser vorgenommen. Absorbance - Absorbance was done with the standard Cobb 60 test using demineralized water.
Wasserfestigkeit - Zur Untersuchung der Wasserfestigkeit wurde die Farbdichte eines Ausdrucks bestimmt, das Aufzeichnungsblatt dann 1 Minute lang in ein Wasserbad mit Wasser einer Temperatur von 25 °C getaucht. Das Blatt wurde getrocknet, anschließend die Farbdichte visuell bestimmt, d.h. mit Noten von 1 (sehr gut) bis 5 benotet, und die Differenz der Farbdichte vor und nach der Behandlung mit Wasser ermittelt. Waterfastness - To test waterfastness, the color density of a printout was determined and the recording sheet was then immersed in a water bath with water at 25 ° C for 1 minute. The sheet was dried, then the color density was determined visually, ie graded from 1 (very good) to 5, and the difference in color density was determined before and after the treatment with water.
Lichtechtheit - Die bedruckten Proben wurden 24 Stunden lang bei 30°C und einer relativen Luftfeuchtigkeit von 60% in ein ATLAS 3000i Weatherometer eingebracht. Die Bewertung des Ausbleichens der Farben erfolgte nach dem CIE L*a*b* System für jede Farbe vor und nach der zuvor beschriebenen Behandlung. Die CIE L*a*b* Werte wurden mit einem X-Rite Color Swatchbook aufgenommen. Lightfastness - The printed samples were placed in an ATLAS 3000i Weatherometer for 24 hours at 30 ° C and 60% relative humidity. The color fading was assessed according to the CIE L * a * b * system for each color before and after the treatment described above. The CIE L * a * b * values were recorded with an X-Rite Color Swatchbook.
Die Ergebnisse der Prüfungen sind in den Tabellen 3 bis 8
zusammengefaßt.
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE10103716A DE10103716C5 (en) | 2001-01-26 | 2001-01-26 | Porous inkjet recording material |
DE10103716 | 2001-01-26 |
Publications (4)
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EP1226959A2 true EP1226959A2 (en) | 2002-07-31 |
EP1226959A3 EP1226959A3 (en) | 2004-06-16 |
EP1226959B1 EP1226959B1 (en) | 2006-05-03 |
EP1226959B2 EP1226959B2 (en) | 2011-04-20 |
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EP02000747A Expired - Lifetime EP1226959B2 (en) | 2001-01-26 | 2002-01-12 | Porous ink-jet recording material |
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US (1) | US6855382B2 (en) |
EP (1) | EP1226959B2 (en) |
JP (1) | JP3964688B2 (en) |
AT (1) | ATE324990T1 (en) |
DE (2) | DE10103716C5 (en) |
ES (1) | ES2262712T5 (en) |
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WO2003101746A1 (en) * | 2002-06-04 | 2003-12-11 | Canon Kabushiki Kaisha | Recording medium having ink receptive layer and process for producing the same |
US7255901B2 (en) | 2002-06-04 | 2007-08-14 | Canon Kabushiki Kaisha | Recording medium for ink and method for producing the same |
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DE10361247A1 (en) * | 2003-12-22 | 2005-07-28 | Deutsche Gelatine-Fabriken Stoess Ag | Chitosan and its use as a color fixing agent in ink-jet recording materials |
WO2006037085A2 (en) * | 2004-09-27 | 2006-04-06 | Arkwright, Inc. A Rhode Island Corporation | Ink-jet media having an ink-vehicle permeable coating and a microporous coating |
US8088860B2 (en) * | 2004-10-29 | 2012-01-03 | Hewlett-Packard Development Company, L.P. | Paper with photo-feel backcoat |
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Also Published As
Publication number | Publication date |
---|---|
DE10103716C5 (en) | 2005-11-17 |
EP1226959B2 (en) | 2011-04-20 |
DE10103716C1 (en) | 2003-02-06 |
EP1226959A3 (en) | 2004-06-16 |
JP2002307823A (en) | 2002-10-23 |
DE50206607D1 (en) | 2006-06-08 |
ES2262712T3 (en) | 2006-12-01 |
ES2262712T5 (en) | 2011-07-08 |
US6855382B2 (en) | 2005-02-15 |
EP1226959B1 (en) | 2006-05-03 |
US20030152721A1 (en) | 2003-08-14 |
JP3964688B2 (en) | 2007-08-22 |
ATE324990T1 (en) | 2006-06-15 |
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