EP1333991A1 - Wärmeempfindlicher aufzeichnungsbogen und seine verwendung - Google Patents
Wärmeempfindlicher aufzeichnungsbogen und seine verwendungInfo
- Publication number
- EP1333991A1 EP1333991A1 EP01983538A EP01983538A EP1333991A1 EP 1333991 A1 EP1333991 A1 EP 1333991A1 EP 01983538 A EP01983538 A EP 01983538A EP 01983538 A EP01983538 A EP 01983538A EP 1333991 A1 EP1333991 A1 EP 1333991A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- recording sheet
- sheet according
- protective layer
- range
- heat
- 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
- 239000011241 protective layer Substances 0.000 claims abstract description 49
- 239000010410 layer Substances 0.000 claims abstract description 35
- 239000000049 pigment Substances 0.000 claims abstract description 34
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 25
- 239000000440 bentonite Substances 0.000 claims abstract description 20
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 20
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 238000004132 cross linking Methods 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims description 37
- 229920000058 polyacrylate Polymers 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000001023 inorganic pigment Substances 0.000 claims description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 7
- 239000000370 acceptor Substances 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 4
- 235000012211 aluminium silicate Nutrition 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 229940088417 precipitated calcium carbonate Drugs 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- ZMGMDXCADSRNCX-UHFFFAOYSA-N 5,6-dihydroxy-1,3-diazepan-2-one Chemical compound OC1CNC(=O)NCC1O ZMGMDXCADSRNCX-UHFFFAOYSA-N 0.000 claims 1
- WRAGBEWQGHCDDU-UHFFFAOYSA-M C([O-])([O-])=O.[NH4+].[Zr+] Chemical compound C([O-])([O-])=O.[NH4+].[Zr+] WRAGBEWQGHCDDU-UHFFFAOYSA-M 0.000 claims 1
- VGGLHLAESQEWCR-UHFFFAOYSA-N N-(hydroxymethyl)urea Chemical compound NC(=O)NCO VGGLHLAESQEWCR-UHFFFAOYSA-N 0.000 claims 1
- -1 acryl Chemical group 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 abstract description 3
- 239000007767 bonding agent Substances 0.000 abstract 3
- 229920001577 copolymer Polymers 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007645 offset printing Methods 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 235000010980 cellulose Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229910052909 inorganic silicate Inorganic materials 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000011115 styrene butadiene Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000003232 water-soluble binding 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
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical group NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 241000294754 Macroptilium atropurpureum Species 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- GXBDYVJMWRTUNT-UHFFFAOYSA-N buta-1,3-diene;2-methylprop-2-enoic acid Chemical compound C=CC=C.CC(=C)C(O)=O GXBDYVJMWRTUNT-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 238000003490 calendering Methods 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
- ZSBRYDJXHOFQMW-UHFFFAOYSA-N chloroethene;ethene;ethenyl acetate Chemical group C=C.ClC=C.CC(=O)OC=C ZSBRYDJXHOFQMW-UHFFFAOYSA-N 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 150000004668 long chain fatty acids Chemical class 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 235000012243 magnesium silicates Nutrition 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical group [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/426—Intermediate, backcoat, or covering layers characterised by inorganic compounds, e.g. metals, metal salts, metal complexes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/04—Direct thermal recording [DTR]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/40—Cover layers; Layers separated from substrate by imaging layer; Protective layers; Layers applied before imaging
-
- 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
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
Definitions
- the invention relates to a heat-sensitive recording sheet with a substrate, a heat-sensitive recording layer containing color formers and color acceptors and a protective layer formed on the recording layer, which contains as a binder a water-insoluble, self-crosslinking acrylic polymer, a crosslinking agent and as a pigment an alkaline-prepared bentonite, and its use as a ticket ,
- a heat recording sheet of the type mentioned at the outset is known from WO 97-18091 A 1 and also from WO 98-43824 A 1.
- the protective layer of the known heat recording sheet contains not only water-insoluble but also water-soluble binder.
- a pigment content of 12 to 20% by weight is to be provided, which can consist predominantly of alkaline digested bentonite
- the pigment content of the protective layer according to the teaching of the second document is between greater than 20 and 40% by weight. , 15 to 30% by weight of bentonite, in particular of an alkaline digested bentonite.
- the protective layer may contain a crosslinking aid, the proportion of which - based on the total weight of the protective layer - is 1 to 2% by weight in the case of the first document and 1 to 5% by weight in the case of the second document is.
- a protective layer is known from US Pat. No. 4,682,192 which serves to protect a heat-sensitive recording layer applied to a substrate.
- the protective layer contains a colloidal inorganic silicate, which is incorporated either in the absence or in a mixture with a water-soluble or very poorly water-soluble high molecular compound.
- the colloidal inorganic silicate is selected from colloidal magnesium aluminum silicates and fluorine-containing colloidal magnesium silicates, bentonite, attapulgite and dimonite being disclosed in particular. Further references to special properties of the silicates are not disclosed in the writing. Self-crosslinking acrylic polymers are proposed as poorly water-soluble high-molecular compounds.
- the mixing ratio of the said silicates and the sparingly water-soluble high molecular weight polymers is generally in the range between 1: 0.1 and 1:10, a ratio between 1: 1 and 1: 5 being given as the preferred range.
- a protective layer is known from EP-A-0 344 705, in which 0.5 to 3 parts by weight of pigment are present per part by weight of binder. Suitable binders for the protective layer include polyvinyl alcohol, carboxymethyl cellulose, starch and starch derivatives and copolymer emulsions of styrene-butadiene, vinyl acetate-ethylene, vinyl acetate-vinyl chloride-ethylene and methacrylate-butadiene.
- Precipitated calcium carbonate, ground calcium carbonate, talc, kaolin, silicon dioxide anhydride, magnesium carbonate, zinc oxide, aluminum oxide and aluminum hydroxide in addition to organic pigments are mentioned as suitable pigments.
- Protective layers containing pigment, which only contain water-soluble binder, are described by way of example.
- EP-B-0 373 903 relates to a heat-sensitive recording paper with an internal adhesive strength of 2.5 kg-cm or more, which has a protective layer with a smoothness of at least 500 Bekk seconds, preferably from 700 to 1500 Bekk seconds a fine particle of a styrene-acrylate polymer and an intermediate layer containing a binder is applied.
- Suitable binders for the protective layer are both water-soluble and water-insoluble high polymers with sufficient film-forming capacity. Any pigment addition to the protective layer is also disclosed, but the document does not provide any indication of the type of suitable pigments.
- the new recording sheet must be distinguished by a high level of environmental resistance, which in the sense of the invention means the outstanding resistance of the heat-sensitive recording sheet to water and to plasticizers.
- An essential aspect of the new recording sheet must be its cost-effective production method.
- Another object of the invention is to develop a recording sheet which, in addition to the range of requirements mentioned above, has good devaluability and good printability in the flexographic and wet offset printing processes, at least on its side provided with the heat-sensitive recording layer.
- a heat-sensitive recording sheet has good cancelability in the sense of this invention if a non-solvent-containing cancellation stamp ink consisting of coloring pigments cannot be completely wiped away dry or wet from the recording sheet immediately after being printed.
- a heat-sensitive recording layer containing color formers and color acceptors and
- a protective layer formed on the recording layer which contains a water-insoluble, self-crosslinking acrylic polymer as a binder, a crosslinking agent and, as a pigment, predominantly an bentonite prepared in an alkaline manner, wherein
- the pigment of the protective layer consists of one or more inorganic pigments and at least 80% by weight is formed from a highly purified alkaline bentonite,
- the binder of the protective layer consists of one or more water-insoluble, self-crosslinking acrylic polymers,
- the binder / pigment ratio is in a range between 7: 1 and 9: 1,
- the protective layer has a smoothness of at least 900 Bekk seconds.
- water-insoluble binders used in the description and claims means those which are in the form of aqueous dispersions / latices of polymers or copolymers. Crosslinking agents are not included in the binders in the context of the present invention.
- the basis of the new recording sheet is the highly purified alkaline bentonite, which is contained in the protective layer as an inorganic pigment alone or in the mixture ratio according to the invention with other inorganic pigments.
- the self-adhesion of this bentonite requires a completely new composition of the protective layer, which is reflected in the ratio of binder to pigment and crosslinking agent to binder according to the invention.
- the choice of the binder is of particular importance to the invention, since it is only by reaching to a self-crosslinking acrylic polymer as the sole binder and used in a certain ratio with pigment on the one hand and crosslinking agent on the other that the production of a recording sheet is successful which, after its smoothness adjustment according to the invention, all required technological requirements.
- a self-crosslinking acrylic polymer in the sense of this invention is to be understood as a self-crosslinking binder selected from the group comprising styrene / acrylic acid ester copolymer, a copolymer of styrene / acrylic acid ester containing acrylamide groups and adds a copolymer based on acrylonitrile, methacrylamide and acrylic ester.
- the smoothness of the new recording sheet is achieved by treating it with a smoothing device, for example a calender. Due to the fact that the protective layer of the new recording sheet is formed in one layer, the subject of the invention can also meet the required economic conditions.
- the recording sheet according to the invention has a pigment content in the protective layer which, among other things, Due to the choice of the highly purified, alkaline-processed bentonite as pigment, the new recording sheet can guarantee both good validity and good printability, even with protective layers with a relatively low area-related mass. can be explained with the large inner surface and the large micropore volume of the highly purified alkaline processed bentonite.
- the recording sheet according to the invention in addition to the properties explained above, also guarantees the required excellent barcode readability, which on the one hand results in the high smoothness of more than 900 Bekk seconds and on the other hand the relatively low area-related mass the protective layer is favored.
- the entire range of requirements can be met.
- the bentonite in powder form has an area-edge ratio in a range between 15 and 70, in particular in a range between 20 and 50.
- crosslinking agent / binder ratio is in a range between 1: 5 and 1:40, preferably in a range between 1: 5 and 1:20 or even better in a range between 1: 5 and 1:10, whereby particularly favorable test results were found with a crosslinking agent / binder ratio in a range between 1: 5 and 1: 7.
- crosslinking agent is of no importance to the invention, provided that the crosslinking agent and binder in the protective layer do not adversely affect their effects.
- crosslinking agents which are selected from the group comprising
- the recording sheet according to the invention has a further increased barcode readability if the protective layer has a smoothness in a range from 1200 to 5500 Bekk seconds due to strong calendering.
- the protective layer has a smoothness in a range greater than 1500 to 2500 Bekk seconds, since in addition to excellent barcode readability and the fulfillment of all other technological and economic requirements, it also has a pleasant and particularly uniform appearance new heat-sensitive recording sheet.
- the aim is to form the cover layer with the smallest possible surface-related mass, but at the same time also the contradictory requirements of high environmental resistance as well as good devaluability and good printability in flexo and wet. Offset printing processes are to be fulfilled. While the high environmental resistance requires a top layer with the largest possible area-related mass and high binding and crosslinking agent content, the demand for good devaluability and printability is aimed at a top layer with the largest possible area-related mass and high pigment content, which above all contradicts good barcode readability.
- a recording sheet that met all the requirements ideally had a mass per unit area of the protective layer in a range from 1.0 to 4.0 g / m 2 , preferably in a range from 1.5 to 3.0 g / m 2 and very particularly preferably in a range from 1.8 to 2.5 g / m 2 .
- the specified protective layers can be applied to heat-sensitive recording layers which are applied directly to the substrate, for example made of paper, but according to a preferred embodiment they can also be used in those heat-sensitive recording sheets in which there is between the substrate and the heat-sensitive recording layer an intermediate layer is also formed, which preferably contains oil-absorbing inorganic pigment.
- Such an intermediate layer can, on the one hand, make a positive contribution to the leveling of the substrate surface, which reduces the amount of coating color which is necessarily to be applied for the heat-sensitive recording layer, and on the other hand the pigments of this intermediate layer absorb and favor the wax components of the heat-sensitive recording layer which are liquefied by the action of heat during the formation of the typeface such a safe and fast functioning of the heat-induced recording.
- the recording sheet according to the invention preferably has a backside coating which is applied to the side of the substrate which is opposite the side provided with the heat-sensitive recording layer.
- a back coating is proposed, for example, in DE-A-197 48 258 and then serves to improve the printability of the recording sheet on the back in offset and flexographic printing processes and to improve the blocking effect of the back against plasticizers, oils and greases.
- the new heat-sensitive recording sheet is especially designed for use as a ticket and here specifically for use as a lottery ticket. Frequently, the requirement for recording sheets used in this way is that their authenticity can be demonstrated simply and as far as possible without the use of complex aids.
- the new recording sheet has a security feature or a combination of several security features.
- the following security components particularly those disclosed in DE 199 36 030, which has not yet been published, can be used as security features, without being restricted or specified in terms of type or number to be combined:
- ⁇ a water-insoluble dye (A) which is invisible to the naked eye and is incorporated into the substrate and which, when surface-wetted with an organic solvent or an acid, gives rise to a noticeable coloration on at least the side opposite the side provided with the heat-sensitive recording layer;
- an SC layer which is applied to the side opposite the side provided with the heat-sensitive recording layer and in which acceptors and microcapsules with color formers encapsulated therein are present, the color images having a color-forming reaction with the acceptors when printed.
- a pigmented intermediate layer which is designed in accordance with a proposal of the as yet unpublished DE 100 21 896 for the formation of authenticity-proofing markings in locally different thicknesses, offers itself as a security feature for the new recording sheet.
- the protective layer contains the metal salt of a long-chain fatty acid, in particular stearic acid, as a lubricant.
- a particularly preferred lubricant in the protective layer is a zinc stearate in an amount of less than 20, in particular less than 15 parts by weight, based on a total of 100 parts by weight of the protective layer.
- the protective layer is produced using an aqueous coating slip which, in addition to the pigments, binders, crosslinking agents and lubricants mentioned, also contains customary coating auxiliaries and additives, such as, for. B. dispersants, defoamers and metal salts to accelerate the crosslinking of the crosslinking agents in an amount of these coating auxiliaries of not more than 10 parts by weight, preferably not more than 7 parts by weight, based on a total of 100 parts by weight of the protective layer.
- customary coating auxiliaries and additives such as, for. B. dispersants, defoamers and metal salts to accelerate the crosslinking of the crosslinking agents in an amount of these coating auxiliaries of not more than 10 parts by weight, preferably not more than 7 parts by weight, based on a total of 100 parts by weight of the protective layer.
- a paper web made of bleached and ground hardwood and softwood cellulose with a mass per unit area of 67 g / m 2 is added to the substrate on a Fourdrinier paper machine with the addition of conventional admixtures in conventional quantities.
- a calcined kaolin as a pigment, styrene-butadiene latex as a binder and starch as a cobinder are applied to the front in addition to an additional intermediate layer of 8 g / m 2 .
- a heat-sensitive recording layer containing color formers and color acceptors and having a mass per unit area of 5.4 g / m 2 is applied to the intermediate layer.
- a protective layer of 2 g / m 2 is applied to the dried recording layer.
- the pigment used is a highly purified, alkaline-processed bentonite with a platelet structure, the inherent adhesion of which enables it to be fixed with little need for binding agents, and the specific surface area of which, in the non-dispersed state, is given as 85 m 2 / g with an area-to-edge ratio which is in powder form Bentonite is in a range between 20 and 50.
- Polyamide-epichlorohydrin resin is used as the crosslinking agent, and the aqueous dispersion of a self-crosslinking copolymer of acrylonitrile, methacrylamide and acrylic ester is used as the binder.
- the coating slip for the production of the protective layer contains, as further components, a defoamer, stearic acid as a lubricant and various dispersants, on the one hand for the pigment and on the other hand for the lubricant.
- the applied coating slip is dried and the recording sheet produced so far is smoothed by means of a calender, a smoothness of 2200 Bekk seconds being achieved.
- the recording sheet produced in this way which is inexpensive to produce compared to its requirement profile, can be printed well in the flexographic and wet offset printing processes and has good devaluability.
- the water resistance is recorded as the ratio of two measurements of the dynamic pressure density determined using the Macbeth RD 914 from Karl Schröder KG (Korrillonstrasse 32, D-69469 Weinheim).
- a sample of the recording sheet according to the invention is provided with a typeface using a TP 3000-300 thermal printer from Charles Richiger AG, Mechanical Engineering (Bernstrasse 81, CH-3613 Steffisburg).
- the sample of the recording sheet according to the invention is immersed in water for 60 minutes.
- the dynamic print density is then measured a second time.
- the water resistance of the recording sheet according to the invention thus examined can be described as very good given a quotient of both measured values of 94%.
- the new recording sheet receives a heat-induced barcode using a 300dpi BOCA printer, type Micro 21 from Boca tickets & printers (Vlietweg 17, NL-2266 KA Leidschendam).
- the printed image is viewed visually and rated good in terms of sharpness and color density.
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Paper (AREA)
- Credit Cards Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10051294 | 2000-10-16 | ||
| DE10051294A DE10051294C1 (de) | 2000-10-16 | 2000-10-16 | Wärmeempfindlicher Aufzeichnungsbogen und seine Verwendung |
| PCT/EP2001/011677 WO2002032688A1 (de) | 2000-10-16 | 2001-10-09 | Wärmeempfindlicher aufzeichnungsbogen und seine verwendung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1333991A1 true EP1333991A1 (de) | 2003-08-13 |
| EP1333991B1 EP1333991B1 (de) | 2004-08-18 |
Family
ID=7660001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01983538A Expired - Lifetime EP1333991B1 (de) | 2000-10-16 | 2001-10-09 | Wärmeempfindlicher aufzeichnungsbogen und seine verwendung |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US20060154819A1 (de) |
| EP (1) | EP1333991B1 (de) |
| JP (1) | JP2004526586A (de) |
| CN (1) | CN1211217C (de) |
| AT (1) | ATE273800T1 (de) |
| DE (2) | DE10051294C1 (de) |
| ES (1) | ES2227302T3 (de) |
| WO (1) | WO2002032688A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011114129A1 (de) | 2011-09-23 | 2013-03-28 | Mitsubishi Hitec Paper Europe Gmbh | Aufzeichnungsmaterial zur Offset-Bedruckung |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10343273A1 (de) * | 2003-09-17 | 2005-04-21 | Voith Paper Patent Gmbh | Streichmaschine zum Auftragen von mindestens einer Farbe mit einem hohen Feststoffgehalt |
| DE202004019989U1 (de) * | 2004-12-27 | 2005-03-17 | Siemens Ag | Papier für einen Thermodrucker |
| DE102006056003B4 (de) | 2006-11-24 | 2008-08-14 | Mitsubishi Hitec Paper Flensburg Gmbh | Wärmeempfindliches Aufzeichnungsmaterial mit Authentifikationsmerkmal |
| DE102008007596B4 (de) | 2008-02-06 | 2010-08-05 | Kanzan Spezialpapiere Gmbh | Verfahren zur Herstellung von thermischen Aufzeichnungsmaterialien, insbesondere von Thermopapieren und Aufzeichnungsmaterial |
| CN101952508B (zh) * | 2008-03-31 | 2013-01-23 | 日本制纸株式会社 | 制纸用添加剂和含有其的纸 |
| CN101417563B (zh) * | 2008-10-21 | 2010-09-22 | 莫文生 | 一种环保型无碳复写纸显色剂的生产方法 |
| CN103757979B (zh) * | 2013-12-31 | 2016-02-03 | 金华盛纸业(苏州工业园区)有限公司 | 热敏纸及其制备方法 |
| EP2910384B1 (de) * | 2014-02-21 | 2016-09-21 | Mitsubishi HiTec Paper Europe GmbH | Wärmeempfindliches Aufzeichnungsmaterial mit einer neuartigen Farbakzeptor-Kombination |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4682192A (en) * | 1984-07-31 | 1987-07-21 | Nippon Kayaku Kabushiki Kaisha | Heat-sensitive recording sheet |
| JPH01301368A (ja) * | 1988-05-31 | 1989-12-05 | Kanzaki Paper Mfg Co Ltd | 感熱記録体 |
| EP0373903B1 (de) * | 1988-12-12 | 1995-02-15 | Tomoegawa Paper Co. Ltd. | Wärmeempfindliches Aufzeichnungspapier für Etiketten |
| JPH02274589A (ja) * | 1989-04-18 | 1990-11-08 | Nippon Kayaku Co Ltd | 感熱記録シート |
| DE19542598A1 (de) * | 1995-11-15 | 1997-05-22 | Feldmuehle Ag Stora | Wärmeempfindlicher Aufzeichnungsbogen |
| DE19713590C1 (de) * | 1997-04-02 | 1998-10-29 | Stora Publication Paper Ag | Wärmeempfindlicher Aufzeichnungsbogen |
| DE19806433B4 (de) * | 1998-02-17 | 2004-11-11 | Mitsubishi Hitec Paper Flensburg Gmbh | Verwendung eines wärmeempfindlichen Aufzeichnungsmaterials als Etikett |
-
2000
- 2000-10-16 DE DE10051294A patent/DE10051294C1/de not_active Expired - Fee Related
-
2001
- 2001-10-09 EP EP01983538A patent/EP1333991B1/de not_active Expired - Lifetime
- 2001-10-09 AT AT01983538T patent/ATE273800T1/de not_active IP Right Cessation
- 2001-10-09 CN CNB018190499A patent/CN1211217C/zh not_active Expired - Fee Related
- 2001-10-09 US US10/399,191 patent/US20060154819A1/en not_active Abandoned
- 2001-10-09 ES ES01983538T patent/ES2227302T3/es not_active Expired - Lifetime
- 2001-10-09 WO PCT/EP2001/011677 patent/WO2002032688A1/de not_active Ceased
- 2001-10-09 DE DE50103351T patent/DE50103351D1/de not_active Expired - Lifetime
- 2001-10-09 JP JP2002535898A patent/JP2004526586A/ja active Pending
-
2007
- 2007-11-29 US US11/998,246 patent/US20080081764A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0232688A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011114129A1 (de) | 2011-09-23 | 2013-03-28 | Mitsubishi Hitec Paper Europe Gmbh | Aufzeichnungsmaterial zur Offset-Bedruckung |
| WO2013041302A1 (de) | 2011-09-23 | 2013-03-28 | Mitsubishi Hitec Paper Europe Gmbh | Aufzeichnungsmaterial zur offset-bedruckung |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1211217C (zh) | 2005-07-20 |
| WO2002032688A1 (de) | 2002-04-25 |
| ATE273800T1 (de) | 2004-09-15 |
| CN1474751A (zh) | 2004-02-11 |
| DE10051294C1 (de) | 2002-04-18 |
| DE50103351D1 (de) | 2004-09-23 |
| US20060154819A1 (en) | 2006-07-13 |
| JP2004526586A (ja) | 2004-09-02 |
| ES2227302T3 (es) | 2005-04-01 |
| EP1333991B1 (de) | 2004-08-18 |
| US20080081764A1 (en) | 2008-04-03 |
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