EP0938419B1 - Feuille d'impression thermosensible munie d'un revetement au verso, contenant de l'amidon, un copolymere d'acrylate et un catalyseur alcalin - Google Patents

Feuille d'impression thermosensible munie d'un revetement au verso, contenant de l'amidon, un copolymere d'acrylate et un catalyseur alcalin Download PDF

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Publication number
EP0938419B1
EP0938419B1 EP98946412A EP98946412A EP0938419B1 EP 0938419 B1 EP0938419 B1 EP 0938419B1 EP 98946412 A EP98946412 A EP 98946412A EP 98946412 A EP98946412 A EP 98946412A EP 0938419 B1 EP0938419 B1 EP 0938419B1
Authority
EP
European Patent Office
Prior art keywords
heat
sensitive recording
recording sheet
sheet according
alkaline catalyst
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.)
Expired - Lifetime
Application number
EP98946412A
Other languages
German (de)
English (en)
Other versions
EP0938419A1 (fr
Inventor
Wolfgang Wagner
Jutta Berndt
Franz Wirnitzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi HiTech Paper Flensburg GmbH
Original Assignee
Mitsubishi HiTech Paper Flensburg GmbH
Stora Spezialpapiere GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE1997140072 external-priority patent/DE19740072A1/de
Priority claimed from DE1997148258 external-priority patent/DE19748258A1/de
Application filed by Mitsubishi HiTech Paper Flensburg GmbH, Stora Spezialpapiere GmbH filed Critical Mitsubishi HiTech Paper Flensburg GmbH
Publication of EP0938419A1 publication Critical patent/EP0938419A1/fr
Application granted granted Critical
Publication of EP0938419B1 publication Critical patent/EP0938419B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
    • 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
    • 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
    • G09F3/08—Fastening or securing by means not forming part of the material of the label itself
    • G09F3/10—Fastening or securing by means not forming part of the material of the label itself by an adhesive layer
    • 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]

Definitions

  • the invention relates to a heat sensitive Recording sheet with a substrate, one on arranged on its front, color formers and Color-sensitive heat-sensitive Recording layer and one on top of it Back trained back coating.
  • a recording sheet of the above Art is known from DE-C-38 36 660.
  • the Back coating can be made from water soluble High polymers such as starch, gelatin, Styrene maleic anhydride copolymer hydrolyzates or polyvinyl alcohol and water-insoluble Polymers such as latices are formed.
  • the Polymers can be used alone or as a mixture be used. With the known Back coating should be prevented that when used as a label, undesirable Influences of plasticizers on a with the Label to be provided, can act.
  • a barrier layer consisting of water-soluble polymers and a water-repellent wax or a wax-like Connection, provided.
  • the desired effect consists in avoiding harmful influences, especially by plasticizers.
  • US-A-4,593,298 discloses one Backside coating containing an alkali salt Styrene maleic acid copolymers and a polymeric Latex. With the known Back coating is said to Water resistance and block resistance be improved. At the same time, the Runnability improves and curl tendency of the paper.
  • EP-B-0 171 810 describes a back coating in which the durability of the recorded image is to be improved by using a polyurethane emulsion with an application weight of 1 to 5 g / m 2 by preventing liquids, such as plasticizers, Oil, water and solvents penetrate the color development layer from the back.
  • EP-A-0 518 552 describes a heat-sensitive recording material in which the substrate either from a thermoplastic Film or synthetic paper.
  • a coating on the back at least 20% from a water-soluble Polymers such as B. polyvinyl alcohol, Cellulose ether or starch.
  • Preferably contains the back coating is also water-insoluble Polymers such as B. copolymers of vinyl acetate-acrylic acid esters, Methacrylic acid esters and Acrylic acid esters, polyurethane resins, Polyvinyl chloride resins and Polyvinylidene chloride resins.
  • the one colored fluorescent dye composition in has its recording layer provided on the back with a barrier layer, which in the essentially from water-soluble Polymer materials, such as polyvinyl alcohol, various cellulose ethers, starch, gelatin, Casein and polyvinyl pyrolidone as well as in water dispersed resins, such as.
  • a barrier layer which in the essentially from water-soluble Polymer materials, such as polyvinyl alcohol, various cellulose ethers, starch, gelatin, Casein and polyvinyl pyrolidone as well as in water dispersed resins, such as.
  • B. Polystyrene emulsions can be produced.
  • the function of the barrier layer is to protect against harmful materials such as oils and Plasticizers used to discolor the in the Record layer developed images can.
  • From DE-A-38 06 201 is a heat sensitive Recording paper known in which the Paper backing has a layer that includes a contains cationic styrene / acrylic copolymer to when calendering or supercalendering the The dust and flakes avoid.
  • Other advantages include: wider contact area with the thermal head when Recording, a high recording density, a excellent point rendering, one low fog and low adhesion as well avoiding pollution or discoloration indicated on the heating head.
  • the order of the cationic styrene / acrylic copolymers may be used in Compound with starch, polyvinyl alcohol, one Latex, pigment or dye using a Size press or a coating device respectively.
  • the suitability of the known heat sensitive recording paper for Manufacture of labels, the back of which against the influence of oils and / or Plasticizers are stable in this document not described.
  • the surface sizing is a coating base paper provided for Manufacturing heat sensitive Recording material is to be used.
  • the surface sizing can save one Styrene / methacrylate is also a water-soluble one Copolymer are used.
  • the object of the present invention is therefore in the development of a heat sensitive Recording material with a Back coating, which compared to the im Substances used in offset and flexographic printing, especially organic solvents and a good one against plasticizers, oils and greases Has blocking effect.
  • the blocking should also the web wound on a roll in the Role can be prevented.
  • acrylate copolymer used is a consisting of acrylate and / or methacrylate To understand copolymer that no styrene or Vinyl acetate components include, and preferably has reactive groups.
  • the copolymer to be used according to the invention can be in the form of an aqueous dispersion or Emulsion present.
  • a alkaline catalyst will crosslink the Guaranteed acrylic copolymers and the Clogging tendency of the paper web counteracted.
  • the invention also contains starch derivatives, how to understand starch ether and starch ester.
  • starch Preferably the starch and that Acrylate copolymers cationic.
  • A mainly serves as the substrate paper made of cellulose fibers, in particular a paper is preferred whose Fibrous material consists of wood-free cellulose fibers.
  • the Back coating based on it Total weight, 40 to 50 parts by weight of starch contains.
  • the Back coating based on it Total weight, 30 to 40 parts by weight Acrylate copolymer included.
  • the Back coating based on it Total weight, 9 to 28 parts by weight, very special preferably 13 to 24 parts by weight of the alkaline Contains catalyst.
  • Suitable alkaline catalysts have been found Metal carbonates have proven to be particularly Calcium carbonate and magnesium carbonate as suitable proven to be a precipitated calcium carbonate entirely is particularly preferred. However, it is unsuitable Sodium carbonate because the sodium ions are one Corrosion of the thermal head can result. Potassium and Chloride compounds.
  • the Backside coating a cross-linking aid, in particular an epichlorohydrin resin.
  • an application weight of 1 to 3 g / m 2 for the backside coating in particular in the range from 1.5 to 2.5 g / m 2 , has proven to be suitable.
  • the heat sensitive according to the invention Recording paper is used as Label on food packaging and is especially for labeling with special Glue-applied labels for frozen foods suitable.
  • the invention Back coating prevents this Application the penetration of plasticizers in the Label so that a discoloration or change of the typeface created on the front in the heat sensitive recording layer is absent.
  • the heat-sensitive recording layer with a Protective layer is covered
  • Another area of application is the production of on the back with additional information printed tickets, but especially those Tickets on the back with solvent-based Magnetic stripes can be printed.
  • An aqueous preparation was prepared from 47 parts by weight of cationic starch, 16 parts by weight of precipitated calcium carbonate and 37 parts by weight of a cationic acrylate copolymer free of styrene or vinyl acetate components.
  • the preparation was adjusted to a solids content of 18% by weight - pH 7.5 - and applied in an amount of 2.2 g / m 2 to a base paper and dried.
  • the other side of the coated web was provided with an intermediate layer for receiving the heat-sensitive recording layer, the essential components of which consisted of an oil-absorbing pigment and binder.
  • the intermediate layer formed was then provided with a conventional heat-sensitive recording layer.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Paper (AREA)

Claims (12)

  1. Feuille d'enregistrement thermosensible comprenant un substrat, une couche d'enregistrement thermosensible contenant des agents chromogènes et des accepteurs de couleur, disposée sur le côté recto de celui-ci, et un revêtement sur le côté verso de celui-ci, caractérisée par le fait que le revêtement côté verso est constitué d'un mélange contenant de l'amidon, un copolymère acrylique exempt de styrène ou d'acétate de vinyle, ayant une température de formation de film inférieure à 5 °C, et un catalyseur alcalin.
  2. Feuille d'enregistrement thermosensible selon la revendication 1, caractérisée par le fait que l'amidon et le copolymère acrylique sont cationiques.
  3. Feuille d'enregistrement thermosensible selon la revendication 1 ou 2, caractérisée par le fait que le revêtement côté verso contient de 40 à 50 parties en poids, rapporté à son poids total, d'amidon.
  4. Feuille d'enregistrement thermosensible selon l'une des revendications 1 à 3, caractérisée par le fait que le revêtement côté verso contient de 30 à 40 parties en poids, rapporté à son poids total, de copolymère acrylique.
  5. Feuille d'enregistrement thermosensible selon l'une des revendications 1 à 4, caractérisée par le fait que le revêtement côté verso contient de 9 à 28 parties en poids, rapporté à son poids total, de catalyseur alcalin.
  6. Feuille d'enregistrement thermosensible selon l'une des revendications 1 à 5, caractérisée par le fait que le revêtement côté verso contient de 13 à 24 parties en poids, rapporté à son poids total, de catalyseur alcalin.
  7. Feuille d'enregistrement thermosensible selon l'une des revendications 1 à 6, caractérisée par le fait que le catalyseur alcalin est un carbonate d'un métal.
  8. Feuille d'enregistrement thermosensible selon l'une des revendications 1 à 7, caractérisée par le fait que le catalyseur alcalin est du carbonate de calcium.
  9. Feuille d'enregistrement thermosensible selon l'une des revendications 1 à 8, caractérisée par le fait que le catalyseur alcalin est un carbonate de calcium précipité.
  10. Feuille d'enregistrement thermosensible selon l'une des revendications 1 à 9, caractérisée par le fait que le revêtement côté verso a un poids surfacique compris entre 1 et 3 g/m2.
  11. Feuille d'enregistrement thermosensible selon l'une des revendications 1 à 10, caractérisée par le fait que le substrat est en papier.
  12. Feuille d'enregistrement thermosensible selon l'une des revendications 1 à 11, caractérisée par le fait que la couche d'enregistrement thermosensible est recouverte d'une couche protectrice.
EP98946412A 1997-09-12 1998-08-22 Feuille d'impression thermosensible munie d'un revetement au verso, contenant de l'amidon, un copolymere d'acrylate et un catalyseur alcalin Expired - Lifetime EP0938419B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE1997140072 DE19740072A1 (de) 1997-09-12 1997-09-12 Wärmeempfindlicher Aufzeichnungsbogen
DE19740072 1997-09-12
DE19748258 1997-10-31
DE1997148258 DE19748258A1 (de) 1997-10-31 1997-10-31 Wärmeempfindlicher Aufzeichnungsbogen
PCT/EP1998/005347 WO1999014056A1 (fr) 1997-09-12 1998-08-22 Feuille d'impression thermosensible munie d'un revetement au verso, contenant de l'amidon, un copolymere d'acrylate et un catalyseur alcalin

Publications (2)

Publication Number Publication Date
EP0938419A1 EP0938419A1 (fr) 1999-09-01
EP0938419B1 true EP0938419B1 (fr) 2000-11-15

Family

ID=26039914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98946412A Expired - Lifetime EP0938419B1 (fr) 1997-09-12 1998-08-22 Feuille d'impression thermosensible munie d'un revetement au verso, contenant de l'amidon, un copolymere d'acrylate et un catalyseur alcalin

Country Status (7)

Country Link
US (1) US6326330B1 (fr)
EP (1) EP0938419B1 (fr)
JP (1) JP2001505150A (fr)
AT (1) ATE197574T1 (fr)
DE (1) DE59800342D1 (fr)
ES (1) ES2153707T3 (fr)
WO (1) WO1999014056A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2329959A1 (fr) 2009-12-01 2011-06-08 Mitsubishi HiTec Paper Flensburg GmbH Matériel d'enregistrement sensible à la chaleur doté d'un revêtement de barrière

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108982A1 (de) * 2001-02-23 2002-09-12 Mitsubishi Hitec Paper Flensbu Wärmeempfindliches Aufzeichnungsmaterial und seine Verwendung
US6833913B1 (en) 2002-02-26 2004-12-21 Kla-Tencor Technologies Corporation Apparatus and methods for optically inspecting a sample for anomalies
ES2339168T3 (es) * 2007-09-10 2010-05-17 Mitsubishi Hitec Paper Flensburg Gmbh Material de registro sensible al calor con recubrimiento de la cara del reverso.
EP2480415B1 (fr) * 2009-09-21 2013-08-14 Mitsubishi HiTec Paper Europe GmbH Matériau d'enregistrement thermosensible pourvu d'un revêtement au verso
EP2329958B1 (fr) 2009-12-01 2012-10-03 Mitsubishi HiTec Paper Europe GmbH Matériel d'enregistrement sensible à la chaleur doté d'un revêtement de face arrière

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57146686A (en) 1981-03-05 1982-09-10 Ricoh Co Ltd Thermal recording type label sheet
JPS58199189A (ja) 1982-05-17 1983-11-19 Toppan Printing Co Ltd 感熱記録材料
JPS602397A (ja) 1983-06-21 1985-01-08 Ricoh Co Ltd 感熱記録材料
JPS6147292A (ja) 1984-08-15 1986-03-07 Jujo Paper Co Ltd 感熱記録紙
DE3529781A1 (de) 1984-08-20 1986-02-20 Ricoh Co., Ltd., Tokio/Tokyo Waermeempfindliches klebe-aufzeichnungsmaterial
GB2166558B (en) 1984-08-30 1988-09-21 Fuji Photo Film Co Ltd Heat-sensitive recording paper
SE500916C2 (sv) * 1986-06-16 1994-10-03 Ricoh Kk Termokänsligt registreringsmaterial med registreringsskikt innehållande fluorescensfärgämneskomposition
US4855277A (en) 1986-06-16 1989-08-08 Hobart Corporation Thermosensitive recording material having recording layer containing fluorescent dye
JPS63209990A (ja) * 1987-02-27 1988-08-31 Fuji Photo Film Co Ltd 感熱記録紙
JP2528905B2 (ja) 1987-10-27 1996-08-28 三菱製紙株式会社 感熱記録体の製造方法
JPH04364983A (ja) 1991-06-12 1992-12-17 Oji Paper Co Ltd 感熱記録体
DE69305308T2 (de) 1992-12-10 1997-03-20 Mitsubishi Paper Mills Ltd Aufzeichnungsblatt für Tintenstrahlschreiber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2329959A1 (fr) 2009-12-01 2011-06-08 Mitsubishi HiTec Paper Flensburg GmbH Matériel d'enregistrement sensible à la chaleur doté d'un revêtement de barrière
WO2011067004A1 (fr) 2009-12-01 2011-06-09 Mitsubishi Hitec Paper Europe Gmbh Matière d'enregistrement thermosensible comprenant un revêtement barrière

Also Published As

Publication number Publication date
US6326330B1 (en) 2001-12-04
ATE197574T1 (de) 2000-12-15
JP2001505150A (ja) 2001-04-17
EP0938419A1 (fr) 1999-09-01
ES2153707T3 (es) 2001-03-01
DE59800342D1 (de) 2000-12-21
WO1999014056A1 (fr) 1999-03-25

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