EP1216841B1 - Elément pour l'enregistrement par jet d'encre avec couche protectrice et méthode pour l'impression - Google Patents

Elément pour l'enregistrement par jet d'encre avec couche protectrice et méthode pour l'impression Download PDF

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Publication number
EP1216841B1
EP1216841B1 EP20010204803 EP01204803A EP1216841B1 EP 1216841 B1 EP1216841 B1 EP 1216841B1 EP 20010204803 EP20010204803 EP 20010204803 EP 01204803 A EP01204803 A EP 01204803A EP 1216841 B1 EP1216841 B1 EP 1216841B1
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EP
European Patent Office
Prior art keywords
ink jet
image
overcoat layer
water
dispersible
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
EP20010204803
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English (en)
French (fr)
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EP1216841A2 (de
EP1216841A3 (de
Inventor
Charles E. Jr. c/o Eastman Kodak Company Romano
Sandra D. c/o Eastman Kodak Company Nesbitt
Lawrence P. C/O Eastman Kodak Company Demejo
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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Filing date
Publication date
Priority claimed from US09/742,982 external-priority patent/US6561644B2/en
Priority claimed from US09/742,752 external-priority patent/US6649252B2/en
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of EP1216841A2 publication Critical patent/EP1216841A2/de
Publication of EP1216841A3 publication Critical patent/EP1216841A3/de
Application granted granted Critical
Publication of EP1216841B1 publication Critical patent/EP1216841B1/de
Anticipated expiration legal-status Critical
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
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or 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
    • B41M5/50—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
    • B41M5/508—Supports

Definitions

  • This invention relates to an ink jet recording element for improving the durability of an ink jet image and a printing method using the element.
  • Ink jet printing is a non-impact method for producing images by the deposition of ink droplets in a pixel-by-pixel manner to an image-recording element in response to digital signals.
  • continuous ink jet a continuous stream of droplets is charged and deflected in an imagewise manner onto the surface of the image-recording element, while unimaged droplets are caught and returned to an ink sump.
  • drop-on-demand ink jet individual ink droplets are projected as needed onto the image-recording element to form the desired image.
  • Common methods of controlling the projection of ink droplets in drop-on-demand printing include piezoelectric transducers and thermal bubble formation. Ink jet printers have found broad applications across markets ranging from industrial labeling to short run printing to desktop document and pictorial imaging.
  • the inks used in the various ink jet printers can be classified as either dye-based or pigment-based.
  • a dye is a colorant which is molecularly dispersed or solvated by a carrier medium.
  • the carrier medium can be a liquid or a solid at room temperature.
  • a commonly used carrier medium is water or a mixture of water and organic co-solvents. Each individual dye molecule is surrounded by molecules of the carrier medium.
  • dye-based inks no particles are observable under the microscope.
  • U.S. Patent 6,087,051 relates to an ink jet recording element containing a protective overcoat layer of an aqueous polyurethane resin or an aqueous polyacryl resin.
  • aqueous polyurethane resin and polyacryl resins are said to have advantages over the polyester resin.
  • problems using a polyurethane resin or an aqueous polyacryl resin in that these resins have to be synthesized from virgin raw materials and the resins cannot be recycled.
  • an ink jet recording element comprising a support having thereon an image-receiving layer containing an ink jet image and an overcoat layer of a water-dispersible, hydrophobic polyester resin having the following general formula: : I n -P-A m wherein
  • Another embodiment of the invention relates to an ink jet printing process for improving the durability of an ink jet image comprising:
  • the anionic groups I in the above formula which provide the polymer with water-dispersibility are typically derived from a carboxylic acid group which is introduced into the resin by polyacid monomers such as trimellitic anhydride, trimellitic acid, or maleic anhydride or sulfonate groups which come from monomers such as dimethyl 5-sulfoisophthalate, dimethyl 5-sulfo,1,3-benzenedicarboxylate, sulfoisophthalate ethylene glycol, dihydroxyethyl-5-sulfol,3-benzenedicarboxylate, or from sulfonated alkenically unsaturated end groups as described in U.S. Patent 5,281,630.
  • the weight percent of anionic monomers in the resin is from 1% to 20%, but 1% to 10% is preferred.
  • the backbone P of the polymer in the above formula is composed of polyester groups. It can be any linear or branched polyester made using polyacids and polyalcohols. The weight percent of the polyester backbone ingredients range from 30-80% of the whole resin, with the most preferred being 50-60% by weight.
  • dicarboxylic acids useful in the backbone polyester polymer, P, employed in the invention include, but are not limited to, terephthalic, isophthalic, phthalic, and 2,6-naphthoic, succinic, glutaric, adipic, 1,4-cyclohexane dicarboxylic, maleic, fumaric, and azelaic.
  • the polyalcohol component of the polyester can be virtually any dihydroxy functional compound.
  • Aliphatic and alicyclic glycols would be the most useful.
  • Useful glycols include, but are not limited to, ethylene glycol, 1,3-propylene glycol, 1,2-propylene glycol, dipropylene glycol, tripropylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, cyclohexanedimethanol, diethylene glycol, and triethylene glycol.
  • the backbone polyester consisting of any combination of the above polyacids and glycols may further directly include or incorporate by transesterification a multifunctional polyol selected from, but not limited to, glycerol, trimethylolpropane, erythritol, pentaerythritol, trimethylolethane, or a monosaccharide.
  • a multifunctional polyol selected from, but not limited to, glycerol, trimethylolpropane, erythritol, pentaerythritol, trimethylolethane, or a monosaccharide.
  • a in the above formula is a group that is an ester of a straight or branched chain fatty acid having from 6 to 24 carbon atoms, such as stearic, oleic, palmitic, lauric, linoleic, linolenic, behenic acid, or their mixtures. These can come from hydrogenated or unhydrogenated animal or vegetable oil, such as beef tallow, lard, corn oil, or soy bean oil.
  • the weight percent of the fatty acid or triglyceride thereof can be 10-60%, with 20-40% by weight being the preferred amount.
  • the water-dispersible, hydrophobic polyester resin employed comprises a reaction product of 30-70% by weight of a poly(ethylene terephthalate) condensation polymer; 5-40% by weight of a hydroxy functional compound having at least two hydroxyl groups; 1-20% by weight of a carboxy functional compound having at least two carboxyl groups and 10-60% by weight of a C 6 -C 24 straight chain or branched fatty acid or triglyceride thereof.
  • the resin is further characterized in that the hydroxy functional compound is present at 1-3 times the equivalents of the hydrophobic moiety.
  • the preparation of such hydrophobic polyester resins is described in detail in U.S. Patent 5,958,601.
  • the water-dispersible, hydrophobic polyester resin comprises water-dispersed transesterified polyester, e.g., poly(ethylene terephthalate) transesterified in the presence of stearic acid and trimellitic acid, or oleic acid and trimellitic acid.
  • polyester e.g., poly(ethylene terephthalate) transesterified in the presence of stearic acid and trimellitic acid, or oleic acid and trimellitic acid.
  • the water-dispersible, hydrophobic polyester as described above is physically mixed with a thermoplastic or thermosetting polymer.
  • the thermoplastic or thermosetting polymer lends added hydrophobicity to the layer, as well as enhanced coating flexibility and serves as a diluent to the polyester component to minimize crosslinking which would deleteriously alter coating properties.
  • thermoplastic or thermosetting polymers useful in the invention include, but are not limited to, carboxylated styrene butadiene, styrene/ acrylate or methacrylate ester compositions containing acrylic or methacrylic acids, hydrolyzed styrene maleic anhydride copolymers, styrene maleic acid salt copolymers, styrene maleic ester copolymers, styrene (meth)acrylate copolymers, styrene (meth)acrylate ester copolymers, styrene (meth)acrylate ester copolymers, styrene acrylate ester acrylonitrile terpolymers, acrylonitrile (meth)acrylate salt copolymers, polycarbonate-based polyurethanes, polyester-based polyurethanes, cellulose polymers, such as methyl cellulose and cellulose acetate butyrate, polyesters, polyamides
  • a preferred aqueous dispersion of a mixture of carboxylated styrene butadiene copolymer and a hydrophobic polyester of the composition generally described above is commercially available as EvCote® PWRHS-37 from EvCo Research Incorporated, Atlanta, GA, USA.
  • the overcoat layer contains a synthetic or natural wax, such as an aqueous dispersion of high density polyethylene, Jon Wax 26 ® (S. C. Johnson Co.) or an aqueous dispersion of carnauba wax (Michelman Co.); and/or a microgel, such as a microgel of methyl methacrylate/ethylene glycol dimethacrylate/acrylic acid.
  • a synthetic or natural wax such as an aqueous dispersion of high density polyethylene, Jon Wax 26 ® (S. C. Johnson Co.) or an aqueous dispersion of carnauba wax (Michelman Co.)
  • a microgel such as a microgel of methyl methacrylate/ethylene glycol dimethacrylate/acrylic acid.
  • the ink jet inks used to prepare the images to be protected using the invention are well-known in the art.
  • the ink compositions used in ink jet printing typically are liquid compositions comprising a solvent or carrier liquid, dyes or pigments, humectants, organic solvents, detergents, thickeners, preservatives, and the like.
  • the solvent or carrier liquid can be solely water or can be water mixed with other water-miscible solvents such as polyhydric alcohols.
  • Inks in which organic materials such as polyhydric alcohols are the predominant carrier or solvent liquid may also be used. Particularly useful are mixed solvents of water and polyhydric alcohols.
  • the dyes used in such compositions are typically watersoluble direct or acid type dyes.
  • Such liquid compositions have been described extensively in the prior art including, for example, U.S. Patents 4,381,946; 4,239,543 and 4,781,758.
  • the image-receiving layer may consist primarily of inorganic oxide particles such as silicas, modified silicas, clays, aluminas, fusible beads such as beads comprised of thermoplastic or thermosetting polymers, non-fusible organic beads, or hydrophilic polymers such as naturally-occurring hydrophilic colloids and gums such as gelatin, albumin, guar, xantham, acacia, chitosan, starches and their derivatives, and the like; derivatives of natural polymers such as functionalized proteins, functionalized gums and starches, and cellulose ethers and their derivatives; and synthetic polymers such as polyvinyloxazoline, polyvinylmethyloxazoline, polyoxides, polyethers, poly(ethylene imine), poly(acrylic acid), poly(methacrylic acid), n-vinyl amides including polyacrylamide and polyvinylpyrrolidone, and poly
  • a porous structure may be introduced into image-receiving layers comprised of hydrophilic polymers by the addition of ceramic or hard polymeric particulates, by foaming or blowing during coating, or by inducing phase separation in the layer through introduction of nonsolvent.
  • additives may be employed in the image-receiving layer and overcoat.
  • additives include surface active agents surfactant(s) to improve coatability and to adjust the surface tension of the dried coating, acid or base to control the pH, antistatic agents, suspending agents, antioxidants, hardening agents to cross-link the coating, antioxidants, UV stabilizers, light stabilizers, and the like.
  • a mordant may be added in small quantities (2%-10% by weight of the base layer) to improve waterfastness. Useful mordants are disclosed in U.S. Patent No. 5,474,843.
  • the layers described above, including the image-receiving layer and the overcoat layer, may be coated by conventional coating means onto a transparent or opaque support material commonly used in this art.
  • Coating methods may include, but are not limited to, wound wire rod coating, slot coating, slide hopper coating, gravure, curtain coating, and the like. Some of these methods allow for simultaneous coatings of both layers, which is preferred from a manufacturing economic perspective.
  • the image-receiving layer may be present in any amount which is effective for the intended purpose. In general, good results are obtained when it is present in an amount of from 5 to 30 g/m 2 , preferably from 8 to 15 g/m 2 , which corresponds to a dry thickness of 5 to 30 ⁇ m, preferably 8 to 15 ⁇ m.
  • the overcoat layer may be applied to the ink jet image in accordance with the invention either through a separate thermal or piezoelectric printhead, or by any other method which would apply the material evenly to the image, such as a spray bar.
  • Methods of applying a overcoat layer are disclosed in commonly-owned U.S. Patent Application Serial No. 09/083,673 filed May 22, 1998, entitled “Printing Apparatus With Spray Bar For Improved Durability" of Wen et al. and U.S. Patent Application Serial No. 09/083,876, filed May 22, 1998, entitled “Ink Jet Printing Apparatus With Print Head For Improved Image Quality" of Wen et al.
  • Other methods for applying the overcoat layer include submerging the element into a tank containing a liquid dispersion of the polyester or by extrusion of the polyester on top of the recording element.
  • the overcoat layer may be present at a dry thickness of from 0.1 to 5 ⁇ m, preferably from 0.25 to 3 ⁇ m.
  • the support for the ink jet recording element used in the invention can be any of those usually used for ink jet receivers, such as paper, resin-coated paper, poly(ethylene terephthalate), poly(ethylene naphthalate) and microporous materials such as poly polyethylene polymer-containing material sold by PPG Industries, Inc., Pittsburgh, Pennsylvania under the trade name of Teslin ®, Tyvek ® synthetic paper (DuPont Corp.), and OPPalyte® films (Mobil Chemical Co.) and other composite films listed in U.S. Patent 5,244,861.
  • the support used in the invention may have a thickness of from 50 to 500 ⁇ m, preferably from 75 to 300 ⁇ m.
  • Antioxidants, antistatic agents, plasticizers and other known additives may be incorporated into the support, if desired.
  • either paper or poly(ethylene terephthalate) is employed.
  • the surface of the support may be subjected to a corona-discharge-treatment prior to applying the image-receiving layer.
  • a subbing layer such as a layer formed from a halogenated phenol or a partially hydrolyzed vinyl chloride-vinyl acetate copolymer can be applied to the surface of the support to increase adhesion of the image-receiving layer. If a subbing layer is used, it should have a thickness (i.e., a dry coat thickness) of less than 2 ⁇ m.
  • Control element C-1 was printed which did not have an overcoat layer.
  • Control element C-2 had an overcoat of a non-modified polyester composed of isophthalic acid, diethylene glycol and a sulfo-derivative of dicarboxylic acid, Eastman Chemical Co. WD-SIZE ® (U.S. Patent 6,087,051, col. 21), at 11 ⁇ m.
  • the element was overcoated using a computer-driven extrusion coating device.
  • This element was prepared the same as C-1 except that the receiver was Konica QP Photo Quality Ink Jet Paper.
  • This element was prepared the same as C-2 except that the receiver was Konica QP Photo Quality Ink Jet Paper and the overcoat layer was 5 ⁇ m thick.
  • This element was prepared the same as C-2 except that the receiver was Konica QP Photo Quality Ink Jet Paper and the overcoat layer was 7.5 ⁇ m thick.
  • This element was prepared the same as Control C-5, except that the overcoat layer was OC-4 EvCo PWRHS-37, PET transesterified in the presence of stearic acid and trimellitic acid and which contains carboxylated styrenebutadiene, (1:1 wt. ratio), a microgel of methyl methacrylate/ethylene glycol dimethacrylate/ acrylic acid (80:10:10 wt. ratio), an aqueous dispersion of high density polyethylene, Jon Wax 26 ® (S. C. Johnson Co.) and an aqueous dispersion of carnauba wax (Michelman Co.), (73.4:23:1.8:1.8 wt. ratio).
  • the overcoat layer was OC-4 EvCo PWRHS-37, PET transesterified in the presence of stearic acid and trimellitic acid and which contains carboxylated styrenebutadiene, (1:1 wt. ratio), a microgel of methyl methacrylate/ethylene glyco
  • This element was prepared the same as Control C-5, except that the overcoat layer was OC-6 EvCo Research Inc. PWRH-25, PET transesterified in the presence of stearic acid and trimellitic acid and a microgel of methyl methacrylate/ethylene glycol dimethacrylate/acrylic acid (80:10:10 wt. ratio), an aqueous dispersion of high density polyethylene, Jon Wax 26 ® (S. C. Johnson Co.) and an aqueous dispersion of carnauba wax (Michelman Co.), (73.4:23:1.8:1.8 wt. ratio)
  • the receivers were placed in an oven at 60°C for 5 minutes to ensure proper drying of the ink.
  • This element was prepared the same as C-1 except that the receiver was Epson Premium Glossy Photo Paper Cat. No. SO41286.
  • This element was prepared the same as C-2 except that the receiver was Epson Premium Glossy Photo Paper Cat. No. SO41286 and the overcoat layer was 2.5 ⁇ m thick.
  • This element was prepared the same as C-2 except that the receiver was Epson Premium Glossy Photo Paper Cat. No. SO41286 and the overcoat layer was 3.5 ⁇ m thick.
  • This element was prepared the same as Control C-7, except that the overcoat layer was OC-1 EvCo Research Inc. PWRH-25.
  • This element was prepared the same as Control C-8, except that the overcoat layer was OC-2 EvCo Research Inc. PWRH-37.

Landscapes

  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Ink Jet (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Paper (AREA)
  • Polyesters Or Polycarbonates (AREA)

Claims (10)

  1. Tintenstrahlaufzeichnungselement mit einem Träger und einer darauf angeordneten Bildempfangsschicht, welche ein Tintenstrahlbild und eine Deckschicht aus einem wasserdispergierbaren, hydrophoben Polyesterharz enthält, gemäß folgender allgemeiner Formel: In-P-Am worin
    I für eine anionische Gruppe steht;
    n für eine ganze Zahl von 1 bis 3 steht;
    P für eine Polyesterhauptkette steht;
    A für ein Ester aus einer geraden oder verzweigtkettigen Fettsäure aus 6 bis 24 Kohlenstoffatomen steht; und
    m für eine ganze Zahl von 3 bis 8 steht;
    wobei die Deckschicht zudem ein synthetisches oder natürliches Wachs umfasst.
  2. Tintenstrahlaufzeichnungselement nach Anspruch 1, worin der Träger Papier ist.
  3. Tintenstrahlaufzeichnungselement nach Anspruch 1, worin der Träger Poly(ethylenterephthalat) ist.
  4. Tintenstrahlaufzeichnungselement nach Anspruch 1, worin die Deckschicht das wasserdispergierbare, hydrophobe Polyesterharz und ein thermoplastisches oder Duropolymer enthält.
  5. Tintenstrahlaufzeichnungselement nach Anspruch 4, worin das wasserdispergierbare, hydrophobe Polyesterharz und das thermoplastische oder Duropolymer im Verhältnis von 1:4 bis 4:1 vorhanden ist.
  6. Tintenstrahlaufzeichnungselement nach Anspruch 5, worin das thermoplastische oder Duropolymer ein Copolymer aus Styrol und Butadien umfasst.
  7. Tintenstrahlaufzeichnungselement nach Anspruch 1, worin das wasserdispergierbare, hydrophobe Polyesterharz wasserdispergiertes, umgeestertes Polyester umfasst.
  8. Tintenstrahlaufzeichnungselement nach Anspruch 1, worin die Deckschicht zudem ein Mikrogel enthält.
  9. Tintenstrahlaufzeichnungselement nach Anspruch 7, worin die Deckschicht zudem ein Mikrogel enthält.
  10. Tintenstrahldruckverfahren zur Verbesserung der Haltbarkeit eines Tintenstrahlbildes mit folgenden Schritten:
    a) Bereitstellen eines Tintenstrahlaufzeichnungselements mit einem Träger und einer darauf angeordneten Bildempfangsschicht, welche ein Tintenstrahlbild enthält, und
    b) Aufbringen über der Fläche der Bildempfangsschicht einer Deckschicht aus wasserdispergierbarem, hydrophoben Polyesterharz von folgender allgemeiner Formel: In-P-Am
       worin
    I für eine anionische Gruppe steht;
    n für eine ganze Zahl von 1 bis 3 steht;
    P für eine Polyesterhauptkette steht;
    A für ein Ester aus einer geraden oder verzweigtkettigen Fettsäure aus 6 bis 24 Kohlenstoffatomen steht; und
    m für eine ganze Zahl von 3 bis 8 steht;
    wobei die Deckschicht zudem ein synthetisches oder natürliches Wachs umfasst.
EP20010204803 2000-12-20 2001-12-10 Elément pour l'enregistrement par jet d'encre avec couche protectrice et méthode pour l'impression Expired - Lifetime EP1216841B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US742752 2000-12-20
US09/742,982 US6561644B2 (en) 2000-12-20 2000-12-20 Ink jet printing process
US09/742,752 US6649252B2 (en) 2000-12-20 2000-12-20 Ink jet recording element
US742982 2000-12-20

Publications (3)

Publication Number Publication Date
EP1216841A2 EP1216841A2 (de) 2002-06-26
EP1216841A3 EP1216841A3 (de) 2002-10-23
EP1216841B1 true EP1216841B1 (de) 2005-11-02

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Application Number Title Priority Date Filing Date
EP20010204803 Expired - Lifetime EP1216841B1 (de) 2000-12-20 2001-12-10 Elément pour l'enregistrement par jet d'encre avec couche protectrice et méthode pour l'impression

Country Status (3)

Country Link
EP (1) EP1216841B1 (de)
JP (1) JP2002274026A (de)
DE (1) DE60114552T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009029615A1 (en) * 2007-08-27 2009-03-05 Valspar Sourcing, Inc. Oxygen scavenging composition

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5858551A (en) * 1997-01-31 1999-01-12 Seydel Research, Inc. Water dispersible/redispersible hydrophobic polyester resins and their application in coatings
US6176574B1 (en) * 1998-05-22 2001-01-23 Eastman Kodak Company Printing apparatus with spray bar for improved durability
US6254230B1 (en) * 1998-05-22 2001-07-03 Eastman Kodak Company Ink jet printing apparatus with print head for improved image durability

Also Published As

Publication number Publication date
EP1216841A2 (de) 2002-06-26
EP1216841A3 (de) 2002-10-23
DE60114552T2 (de) 2006-07-20
DE60114552D1 (de) 2005-12-08
JP2002274026A (ja) 2002-09-25

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