EP1318024B1 - Elément pour l'impression par jet d'encre et méthode d'impression - Google Patents

Elément pour l'impression par jet d'encre et méthode d'impression Download PDF

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Publication number
EP1318024B1
EP1318024B1 EP20020079865 EP02079865A EP1318024B1 EP 1318024 B1 EP1318024 B1 EP 1318024B1 EP 20020079865 EP20020079865 EP 20020079865 EP 02079865 A EP02079865 A EP 02079865A EP 1318024 B1 EP1318024 B1 EP 1318024B1
Authority
EP
European Patent Office
Prior art keywords
ink jet
polymeric particles
porous polymeric
jet recording
porous
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 - Fee Related
Application number
EP20020079865
Other languages
German (de)
English (en)
Other versions
EP1318024A1 (fr
Inventor
Gregory E. c/o Eastman Kodak Company Missell
Paul B. c/o Eastman Kodak Company Merkel
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
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 US10/011,657 external-priority patent/US6815019B2/en
Priority claimed from US10/008,777 external-priority patent/US6659604B2/en
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of EP1318024A1 publication Critical patent/EP1318024A1/fr
Application granted granted Critical
Publication of EP1318024B1 publication Critical patent/EP1318024B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B41M5/50—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
    • 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 and a printing method using the element. More particularly, this invention relates to a porous ink jet recording element containing porous polymeric particles.
  • ink droplets are ejected from a nozzle at high speed towards a recording element or medium to produce an image on the medium.
  • the ink droplets, or recording liquid generally comprise a recording agent, such as a dye or pigment, and a large amount of solvent.
  • the solvent, or carrier liquid typically is made up of water, an organic material such as a monohydric alcohol, a polyhydric alcohol or mixtures thereof.
  • An ink jet recording element typically comprises a support having on at least one surface thereof an ink-receiving or image-forming layer, and includes those intended for reflection viewing, which have an opaque support, and those intended for viewing by transmitted light, which have a transparent support.
  • an ink jet recording element must:
  • ink jet recording element that simultaneously provides an almost instantaneous ink dry time and good image quality is desirable.
  • these requirements of ink jet recording media are difficult to achieve simultaneously.
  • Ink jet recording elements are known that employ porous or non-porous single layer or multilayer coatings that act as suitable image-receiving layers on one or both sides of a porous or non-porous support. Recording elements that use non-porous coatings typically have good image quality but exhibit poor ink dry time. Recording elements that use porous coatings exhibit superior dry times, but typically have poorer image quality and are prone to cracking.
  • a problem with known ink jet recording elements that employ porous single layer or multilayer coatings that act as suitable image-receiving layer is dye stability during storage.
  • dyes printed on to an ink jet receiver element tend to fade due to exposure to ozone which is present in the atmosphere.
  • JP 09207430, JP 08324101 and JP 2000/239578 relate to porous image-receiving layers for inkjet recording elements containing inorganic particles and a poly(vinyl alcohol) having various degrees of hydrolysis.
  • the references do not disclose the degree of hydrolysis for the poly(vinyl alcohol) necessary to provide good gloss and low cracking.
  • Still another object of the invention is to provide a printing method using the above described element.
  • an inkjet recording element comprising a support having thereon an image-receiving layer comprising porous polymeric particles in a polymeric binder, the polymeric binder comprising poly(vinyl alcohol) having a degree of hydrolysis of at least 95% and having a number average molecular weight of at least 45,000.
  • an ink jet recording element which has a good dry time and good stability when exposed to ozone and high humidity conditions, and has high gloss with minimal cracking.
  • Another embodiment of the invention relates to an ink jet printing method comprising the steps of:
  • the support used in the ink jet recording element of the invention may be opaque, translucent, or transparent.
  • the support is paper or a voided plastic material.
  • the thickness of the support employed in the invention can be from 12 to 500 ⁇ m, preferably from 75 to 300 ⁇ m.
  • porous polymeric particles which are used in the invention are in the form of porous beads, porous irregularly shaped particles, or are aggregates of emulsion particles.
  • Suitable porous polymeric particles used in the invention comprise, for example, acrylic resins, styrenic resins, or cellulose derivatives, such as cellulose acetate, cellulose acetate butyrate, cellulose propionate, cellulose acetate propionate, and ethyl cellulose; polyvinyl resins such as polyvinyl chloride, copolymers of vinyl chloride and vinyl acetate and polyvinyl butyral, polyvinyl acetal, ethylene-vinyl acetate copolymers, ethylene-vinyl alcohol copolymers, and ethylene-allyl copolymers such as ethylene-allyl alcohol copolymers, ethylene-allyl acetone copolymers, ethylene-allyl benzene copolymers, ethylene-allyl ether copolymers, ethylene acrylic copolymers and polyoxy-methylene; polycondensation polymers, such as, polyesters, including polyethylene terephthalate, polybutylene terephthal
  • the porous polymeric particles are made from a styrenic or an acrylic monomer. Any suitable ethylenically unsaturated monomer or mixture of monomers may be used in making such styrenic or acrylic polymer.
  • styrenic compounds such as styrene, vinyl toluene, p-chlorostyrene, vinylbenzylchloride or vinyl naphthalene
  • acrylic compounds such as methyl acrylate, ethyl acrylate, n-butyl acrylate, n-octyl acrylate, 2-chloroethyl acrylate, phenyl acrylate, methyl- ⁇ -chloroacrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate; and mixtures thereof.
  • methyl methacrylate or ethylene glycol dimethacrylate is used.
  • the porous polymeric particles are crosslinked. They may have a degree of crosslinking of 27 mole % or greater, preferably 50 mole %, and most preferably 100 mole %. The degree of crosslinking is determined by the mole % of multifunctional crosslinking monomer which is incorporated into the porous polymeric particles.
  • Typical crosslinking monomers which may be used in making the porous polymeric particles employed in the invention are aromatic divinyl compounds such as divinylbenzene, divinylnaphthalene or derivatives thereof; diethylene carboxylate esters and amides such as ethylene glycol dimethacrylate, diethylene glycol diacrylate, and other divinyl compounds such as divinyl sulfide or divinyl sulfone compounds. Divinylbenzene and ethylene glycol dimethacrylate are especially preferred.
  • the porous polymeric particles used in this invention can be prepared, for example, by pulverizing and classification of porous organic compounds, by emulsion, suspension, and dispersion polymerization of organic monomers, by spray drying of a solution containing organic compounds, or by a polymer suspension technique which consists of dissolving an organic material in a water immiscible solvent, dispersing the solution as fine liquid droplets in aqueous solution, and removing the solvent by evaporation or other suitable techniques.
  • the bulk, emulsion, dispersion, and suspension polymerization procedures are well known to those skilled in the polymer art and are taught in such textbooks as G. Odian in "Principles of Polymerization", 2nd Ed. Wiley (1981), and W.P. Sorenson and T.W. Campbell in “Preparation Method of Polymer Chemistry", 2nd Ed, Wiley (1968).
  • porous polymer particles are taught, for example, in U.S. Patents 5,840,293; 5,993,805; 5,403,870; and 5,599,889, and Japanese Kokai Hei 5[1993]-222108.
  • an inert fluid or porogen may be mixed with the monomers used in making the porous polymer particles.
  • the resulting polymeric particles are, at this point, substantially porous because the polymer has formed around the porogen thereby forming the pore network.
  • This technique is described more fully in U.S. Patent 5,840,293 referred to above.
  • the porosity of the porous polymeric particles is achieved by mixing a porogen with the monomers used to make the polymeric particles, dispersing the resultant mixture in water, and polymerizing the monomers to form the porous polymeric particles.
  • a preferred method of preparing the porous polymeric particles used in this invention includes forming a suspension or dispersion of ethylenically unsaturated monomer droplets containing the crosslinking monomer and a porogen in an aqueous medium, polymerizing the monomer to form solid, porous polymeric particles, and optionally removing the porogen by vacuum stripping.
  • the particles thus prepared have a porosity as measured by a specific surface area of 35 m 2 /g or greater, preferably 100 m 2 /g or greater. The surface area is usually measured by B.E.T. nitrogen analysis known to those skilled in the art.
  • the porous polymeric particles may be covered with a layer of colloidal inorganic particles as described in U.S. Patents 5,288,598; 5,378,577; 5,563,226 and 5,750,378.
  • the porous polymeric particles may also be covered with a layer of colloidal polymer latex particles as described in U.S. Patent 5,279,934.
  • the porous polymeric particles used in this invention have a median diameter less than 10 ⁇ m, preferably less than 1 ⁇ m, and most preferably less than 0.6 ⁇ m.
  • Median diameter is defined as the statistical average of the measured particle size distribution on a volume basis. For further details concerning median diameter measurement, see T. Allen, "Particle Size Measurement", 4th Ed., Chapman and Hall, (1990).
  • the polymeric particles used in the invention are porous.
  • porous is meant particles which either have voids or are permeable to liquids. These particles can have either a smooth or a rough surface.
  • the image-receiving layer of the ink jet recording element of the invention may contain a surfactant.
  • Suitable surfactants include anionic surfactants or cationic surfactants.
  • the poly(vinyl alcohol) employed in the invention has a degree of hydrolysis of at least 95% and has a number average molecular weight of at least 45,000. In a preferred embodiment of the invention, the poly(vinyl alcohol) has a degree of hydrolysis of at least 98%. In another preferred embodiment of the invention, the poly(vinyl alcohol) has a number average molecular weight of from 70,000 to 105,000.
  • Commercial embodiments of such a poly(vinyl alcohol) are Gohsenol ® AH-22, Gohsenol ® AH-26 and Gohsenol ® AH-17 from Nippon Gohsei.
  • the image-receiving layer may also contain additives such as pH-modifiers like nitric acid, cross-linkers, rheology modifiers, surfactants, UV-absorbers, biocides, lubricants, water-dispersible latexes, mordants, dyes, optical brighteners etc.
  • pH-modifiers like nitric acid, cross-linkers, rheology modifiers, surfactants, UV-absorbers, biocides, lubricants, water-dispersible latexes, mordants, dyes, optical brighteners etc.
  • the image-receiving layer may be applied to one or both substrate surfaces through conventional pre-metered or post-metered coating methods such as blade, air knife, rod, roll, slot die, curtain, slide, etc.
  • coating process would be determined from the economics of the operation and in turn, would determine the formulation specifications such as coating solids, coating viscosity, and coating speed.
  • the image-receiving layer thickness may range from 5 to 100 ⁇ m, preferably from 10 to 50 ⁇ m.
  • the coating thickness required is determined through the need for the coating to act as a sump for absorption of ink solvent.
  • the image-receiving layer of this invention contains from 0.20 to 10.0 g/m 2 of polymeric binder, preferably from 0.40 to 5.0 g/m 2 , and 1.5 to 60 g/m 2 of porous polymeric particles, preferably from 3.0 to 30 g/m 2 .
  • the ink jet inks used to image the recording elements of the present 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 subbing layer coating was dried in a oven at 40° C for 20 minutes.
  • a second solution at 18% by weight comprised of porous polymeric particles, poly(ethylene glycol dimethacrylate), and a poly(vinyl alcohol) binder, AH-26 from Nippon Gohsei, where the ratio of porous polymer particles to PVA was 80:20, was blade coated over the subbing layer to a dry lay-down of 40 g/m 2 and dried at 40°C for 20 minutes to provide an image-receiving layer.
  • the number average molecular weight of the poly(vinyl alcohol) listed in Table 2 was estimated from the viscosity of a 4% aqueous solution according to a table provided by a commercial manufacturer of poly(vinyl alcohol). The degree of hydrolysis of the poly(vinyl alcohol) was obtained from the manufacturer.
  • This element was prepared the same as Element 1 except that the poly(vinyl alcohol) in the image-receiving layer was AH-22 from Nippon Gohsei.
  • This element was prepared the same as Element 1 except that the poly(vinyl alcohol) in the image-receiving layer was AH-17 from Nippon Gohsei.
  • Control Element C-1 Low m.w. PVA and low degree of hydrolysis
  • This element was prepared the same as Element 1 except that the poly(vinyl alcohol) in the image-receiving layer was AL-06 from Nippon Gohsei.
  • This element was prepared the same as Element 1 except that the poly(vinyl alcohol) in the image-receiving layer was GH-23 from Nippon Gohsei.
  • This element was prepared the same as Element 1 except that the poly(vinyl alcohol) in the image-receiving layer was GH-17 from Nippon Gohsei.
  • This element was prepared the same as Element 1 except that the poly(vinyl alcohol) in the image-receiving layer was KH-20 from Nippon Gohsei.
  • This element was prepared the same as Element 1 except that the poly(vinyl alcohol) in the image-receiving layer was KH-17 from Nippon Gohsei.
  • the elements according to the invention having a poly(vinyl alcohol) with the degree of hydrolysis of at least 95% and a number average molecular weight of at least 45,000 all provide good gloss as compared to the control elements.
  • the elements according to invention with a degree of hydrolysis of at least 95% and an number average molecular weight of at least 70,000 provide both in good gloss and low cracking as compared to the control elements.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Ink Jet (AREA)

Claims (10)

  1. Elément d'enregistrement pour jet d'encre comprenant un support revêtu d'une couche réceptrice d'image comprenant des particules polymères poreuses dans un liant polymère, ledit liant polymère comprenant de l'alcool polyvinylique ayant un degré d'hydrolyse d'au moins 95% et un poids moléculaire moyen en nombre d'au moins 45 000.
  2. Elément selon la revendication 1, dans lequel lesdites particules polymères poreuses ont un diamètre moyen inférieur à 10 µm.
  3. Elément selon la revendication 1, dans lequel lesdites particules polymères poreuses ont un diamètre moyen inférieur au micron.
  4. Elément selon la revendication 1, dans lequel lesdites particules polymères poreuses sont réticulées et ont un degré de réticulation de 27% en moles ou plus.
  5. Elément selon la revendication 1, dans lequel lesdites particules polymères poreuses sont fabriquées à partir d'un monomère de styrène ou d'acrylique.
  6. Elément selon la revendication 5, dans lequel ledit monomère acrylique comprend du méthacrylate de méthyle ou du dimétracrylate d'éthylène glycol.
  7. Elément selon la revendication 1, dans lequel ledit alcool polyvinylique a un degré d'hydrolyse d'au moins 98%.
  8. Elément selon la revendication 1, dans lequel ledit support est le papier ou un matériau plastique poreux.
  9. Elément selon la revendication 1, dans lequel la porosité desdites particules polymères poreuses est créée en mélangeant un agent porogène avec les monomères utilisés pour fabriquer lesdites particules polymères, en dispersant le mélange obtenu dans l'eau et en polymérisant lesdits monomères pour former lesdites particules polymères poreuses.
  10. Procédé d'impression par jet d'encre comprenant les étapes suivantes :
    A) la fourniture d'une imprimante à jet d'encre sensible aux signaux numériques ;
    B) le chargement dans ladite imprimante de l'élément d'enregistrement pour jet d'encre de la revendication 1 ;
    C) le chargement dans ladite imprimante d'une composition d'encre pour jet d'encre ; et
    D) l'impression sur ledit élément d'enregistrement pour jet d'encre en utilisant ladite composition d'encre pour jet d'encre en réponse auxdits signaux numériques.
EP20020079865 2001-12-04 2002-11-22 Elément pour l'impression par jet d'encre et méthode d'impression Expired - Fee Related EP1318024B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US8777 2001-12-04
US10/011,657 US6815019B2 (en) 2001-12-04 2001-12-04 Ink jet recording element
US11657 2001-12-04
US10/008,777 US6659604B2 (en) 2001-12-04 2001-12-04 Ink jet printing method

Publications (2)

Publication Number Publication Date
EP1318024A1 EP1318024A1 (fr) 2003-06-11
EP1318024B1 true EP1318024B1 (fr) 2005-01-12

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EP20020079865 Expired - Fee Related EP1318024B1 (fr) 2001-12-04 2002-11-22 Elément pour l'impression par jet d'encre et méthode d'impression

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EP (1) EP1318024B1 (fr)
JP (1) JP2003205680A (fr)
DE (1) DE60202581T2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0704314A1 (fr) * 1994-09-29 1996-04-03 Agfa-Gevaert N.V. Système pour l'impression par jet d'encre
EP0754560B1 (fr) * 1995-07-20 2000-01-26 Océ-USA Inc. Feuille pour l'enregistrement multicolore par jet d'encre
JP3652057B2 (ja) * 1996-04-16 2005-05-25 キヤノン株式会社 塗工用組成物、記録媒体及びこれを用いた画像形成方法
WO1999021723A1 (fr) * 1997-10-28 1999-05-06 Ppg Industries Ohio, Inc. Support d'impression reticule par rayonnement
JP2000239578A (ja) * 1999-02-22 2000-09-05 Asahi Glass Co Ltd アルミナゾル塗工液、記録シートおよび記録シートの製造方法

Also Published As

Publication number Publication date
JP2003205680A (ja) 2003-07-22
DE60202581D1 (de) 2005-02-17
DE60202581T2 (de) 2006-03-23
EP1318024A1 (fr) 2003-06-11

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