EP0482471B1 - Elément accepteur pour procédé d'impression par thermosublimation - Google Patents

Elément accepteur pour procédé d'impression par thermosublimation Download PDF

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Publication number
EP0482471B1
EP0482471B1 EP91117523A EP91117523A EP0482471B1 EP 0482471 B1 EP0482471 B1 EP 0482471B1 EP 91117523 A EP91117523 A EP 91117523A EP 91117523 A EP91117523 A EP 91117523A EP 0482471 B1 EP0482471 B1 EP 0482471B1
Authority
EP
European Patent Office
Prior art keywords
weight
acrylate
methacrylate
copolymer
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91117523A
Other languages
German (de)
English (en)
Other versions
EP0482471A2 (fr
EP0482471A3 (en
Inventor
Robert Bloodworth
Wolfgang Podszun
Herman Uytterhoeven
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0482471A2 publication Critical patent/EP0482471A2/fr
Publication of EP0482471A3 publication Critical patent/EP0482471A3/de
Application granted granted Critical
Publication of EP0482471B1 publication Critical patent/EP0482471B1/fr
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Expired - Lifetime legal-status Critical Current

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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
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/914—Transfer or decalcomania
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers

Definitions

  • the present invention relates to a color acceptor element for thermal sublimation printing.
  • This recording method is based on the thermally induced transfer of a dye from a color donor layer to a color acceptor layer and is e.g. in "High Quality Image Recording by Sublimation Transfer Recording Material", Electronic Photography Association Documents, 27 (2), 1988, and the literature cited therein.
  • a particular advantage of this method is the possibility to fine-tune the color intensity.
  • Polymers from different substance classes can be used as the material for the color acceptor layer.
  • EP-A 02 28 066 claims a color acceptor layer with improved light stability, which contains a mixture of polycaprolactone or a linear aliphatic polyester with poly (styrene-co-acrylonitrile) and / or bisphenol-A polycarbonate.
  • the color acceptor layers currently available do not yet sufficiently meet the requirements for high color density, adequate image stability and good resolution. It is particularly difficult to achieve high color density and sufficient image stability with minimal lateral diffusion.
  • the object of the invention was to provide a color acceptor element for the thermal sublimation printing process which does not have the disadvantages mentioned above.
  • the object is achieved by using a special polymer in the color acceptor element.
  • Vinyl aromatics suitable according to the invention are styrene, ⁇ -methylstyrene, p-methylstyrene, m-methylstyrene, p-tert-butylstyrene, p-chlorostyrene, p-chloromethylstyrene and vinylnaphthalene. Styrene is preferred.
  • (meth) acrylonitrile means both methacrylonitrile and acrylonitrile.
  • (meth) acrylic acid ester means both methacrylonitrile and acrylonitrile.
  • the (meth) acrylic acid esters are derived from optionally substituted, aliphatic, cycloaliphatic, aromatic or mixed-aromatic aliphatic alcohols having 4 to 18 carbon atoms.
  • the aliphatic radicals can be straight-chain as well as branched and interrupted by oxygen.
  • Suitable (meth) acrylic acid esters are: n-butyl acrylate, n-butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, n-hexyl acrylate, n-hexyl methacrylate, ethylhexyl acrylate, ethylhexyl methacrylate, n-octyl acrylate, n-octyl methacrylate, decyl acrylate, decyl methacrylate, decyl acrylate Stearyl acrylate, stearyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, 4-tert-butylcyclohexyl methacrylate, benzyl acrylate, benzyl methacrylate, phenylethyl acrylate, phenylethyl methacrylate, phenylpropy
  • Mixtures of different (meth) acrylates are also very suitable. Mixtures which contain ethylhexyl acrylate, decyl methacrylate, dodecyl methacrylate or phenylethyl acrylate are preferred.
  • Suitable monomers are vinylidene chloride, vinyl chloride, vinyl acetate, vinyl propionate, vinyl laurate and vinyl adipate.
  • the weight ratio of components a: b is important for the dyeability of the color acceptor layer according to the invention. This ratio is 1: 1 to 4: 1, preferably 2: 1 to 4: 1.
  • Tg glass transition temperature
  • the Tg should be in the range from 40 to 100 ° C., preferably in the range from 50 to 80 ° C.
  • the Tg of the copolymer results from the composition, the Tg being able to be set primarily via the type and amount used of component c).
  • component c) can be used to control further application properties.
  • long-chain alkyl (meth) acrylates such as decyl methacrylate or dodecyl methacrylate, leads to an improved adhesiveness of the color acceptor material according to the invention.
  • the molecular weight (Mg) of the copolymers is approximately 10,000 to 1,000,000 (weight average).
  • the molecular inconsistency is not critical. Typical values are in the range from 2 to 4.
  • Table 1 shows examples of preferred compositions of the copolymer in% by weight. These examples do not limit the invention.
  • the polymerization processes known per se e.g. Bulk polymerization, solution polymerization, suspension polymerization and emulsion polymerization are suitable. These methods are e.g. described in detail in Houben Weyl, Methods of Organic Chemistry, Volume E20 / Part 1.
  • An emulsion polymerization process with sodium alkyl sulfonate as emulsifier and potassium peroxydisulfate as initiator is particularly suitable.
  • Suitable substrates for the acceptor layer according to the invention are both papers, in particular synthetic and polymer-coated papers, and also films based on polyester, polyamide or polycarbonate.
  • the receiving element can contain further layers known for this use. It may be advantageous to apply an anti-adhesive layer, for example made of polysiloxane, over the acceptor layer.
  • an intermediate layer for example made of gelatin, can be applied.
  • the copolymers can be processed from solution or, preferably, aqueous dispersion.
  • Suitable solvents are, for example, acetone, methyl ethyl ketone, tetrahydrofuran, dioxane, ethyl acetate, dichloromethane and dimethylformamide.
  • the solution or dispersion can be applied to the support by casting or knife coating.
  • the color acceptor element can be combined with the color donor elements common in the field of thermal sublimation printing.
  • the color images obtained are characterized by high resolution, high brilliance and good long-term stability.
  • emulsifier long-chain alkyl sulfonate
  • deionized water 3.0 g of emulsifier (long-chain alkyl sulfonate), dissolved in 300 g of deionized water, are placed in a 1 l stirred reactor. The initial charge is heated to 70 ° C. while stirring at 200 rpm with a nitrogen purge and 25 g of the monomer mixture specified below are added. The polymerization is started by adding a solution of 0.5 g of potassium peroxydisulfate in 20 g of deionized water.
  • copolymer dispersions obtained in Examples 1 to 20 were each divided into two parts. A portion was adjusted to a solids content of 10% by weight with deionized water and used directly for the preparation of ink-receiving layers. The copolymer was precipitated from the other part by adding a saturated magnesium sulfate solution. The precipitated copolymer was washed thoroughly with water, dried and dissolved in methyl ethyl ketone (10% by weight solids).
  • the 10% by weight copolymer dispersions or copolymer solutions were cast with the aid of a doctor blade in a wet film thickness of 50 ⁇ m onto a paper which was coated on both sides with polyethylene and on one side of which a gelatin layer had additionally been applied over the polyethylene; the copolymer layer was applied to this side.
  • the coatings were dried at room temperature and then annealed at 90 ° C. for 15 minutes. The dry layer thicknesses were approximately 4.5 »m.
  • Test images were generated on the receiving elements obtained using a Mitsubishi CP-100 E video printer using the Mitsubishi dye cassette CK-100S.
  • the color intensities were determined by microdensitometry.
  • the numerical values given are the black and white densities measured on a black surface of the test image without a filter.
  • the image sharpness was assessed visually immediately after printing, after three days of storage at room temperature and after three days of storage at 57 ° C. and 35% relative humidity.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Paints Or Removers (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (3)

  1. Matériau accepteur de colorant pour le procédé d'impression par thermosublimation, comportant un support et une couche acceptrice de colorant, caractérisé en ce que la couche acceptrice de colorant contient un copolymère de
    a) 15-75 % en poids d'un monomère vinylaromatique,
    b) 5-40 % en poids de(méth)acrylonitrile,
    c) 10-70 % en poids d'ester(méth)acrylique d'alcool en C₄-C₁₈ et
    d) 0-30 % en poids d'autres monomères vinyliques,
    à la condition que la température de transition vitreuse du copolymère soit de plus de 40°C et que le rapport des constituants a/b soit de 1:1 à 4:1 en poids.
  2. Matériau accepteur de colorant selon la revendication 1, caractérisé en ce que le monomère vinylaromatique est le styrène.
  3. Matériau accepteur de colorant selon la revendication 2, caractérisé en ce que le copolymère contient comme autre monomère vinylique d) 5-25 % en poids de chlorure de vinylidène.
EP91117523A 1990-10-25 1991-10-14 Elément accepteur pour procédé d'impression par thermosublimation Expired - Lifetime EP0482471B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4033906 1990-10-25
DE4033906A DE4033906A1 (de) 1990-10-25 1990-10-25 Akzeptorelement fuer thermosublimationsdruckverfahren

Publications (3)

Publication Number Publication Date
EP0482471A2 EP0482471A2 (fr) 1992-04-29
EP0482471A3 EP0482471A3 (en) 1993-01-13
EP0482471B1 true EP0482471B1 (fr) 1995-06-28

Family

ID=6417008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91117523A Expired - Lifetime EP0482471B1 (fr) 1990-10-25 1991-10-14 Elément accepteur pour procédé d'impression par thermosublimation

Country Status (4)

Country Link
US (1) US5266549A (fr)
EP (1) EP0482471B1 (fr)
JP (1) JPH05583A (fr)
DE (2) DE4033906A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4123919A1 (de) * 1991-07-19 1993-01-21 Agfa Gevaert Ag Akzeptorelement fuer thermosublimationsdruckverfahren

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2565866B2 (ja) * 1986-02-25 1996-12-18 大日本印刷株式会社 被熱転写シ−ト
DE3750356T2 (de) * 1986-04-09 1994-12-15 Dynic Corp Durchsichtiger kunststoffilm zur verwendung beim drucken.
DE3789616T2 (de) * 1986-06-30 1994-10-13 Dainippon Printing Co Ltd Blatt zum empfang eines wärmetransfertbildes.
DE3932419C1 (fr) * 1989-09-28 1991-02-21 Felix Schoeller Jun. Gmbh & Co Kg, 4500 Osnabrueck, De

Also Published As

Publication number Publication date
DE4033906A1 (de) 1992-04-30
EP0482471A2 (fr) 1992-04-29
DE59105853D1 (de) 1995-08-03
JPH05583A (ja) 1993-01-08
US5266549A (en) 1993-11-30
EP0482471A3 (en) 1993-01-13

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