WO1998005512A1 - Feuille receptive a l'encre - Google Patents

Feuille receptive a l'encre Download PDF

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Publication number
WO1998005512A1
WO1998005512A1 PCT/US1997/011747 US9711747W WO9805512A1 WO 1998005512 A1 WO1998005512 A1 WO 1998005512A1 US 9711747 W US9711747 W US 9711747W WO 9805512 A1 WO9805512 A1 WO 9805512A1
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WO
WIPO (PCT)
Prior art keywords
ink
receptive
acrylic acid
layer
coating
Prior art date
Application number
PCT/US1997/011747
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English (en)
Inventor
Donald J. Williams
Original Assignee
Minnesota Mining And Manufacturing Company
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 Minnesota Mining And Manufacturing Company filed Critical Minnesota Mining And Manufacturing Company
Priority to AU35949/97A priority Critical patent/AU3594997A/en
Publication of WO1998005512A1 publication Critical patent/WO1998005512A1/fr

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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
    • 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
    • B41M5/5236—Macromolecular coatings characterised by the use of natural gums, of proteins, e.g. gelatins, or of macromolecular carbohydrates, e.g. cellulose
    • 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
    • B41M5/5245—Macromolecular coatings characterised by the use of polymers containing cationic or anionic groups, e.g. mordants

Definitions

  • the invention relates to transparent materials that can be used as ink-receptive sheets for imaging, and more particularly, to improved ink-receptive coatings thereon, providing improved image quality.
  • Imaging devices such as ink jet printers and pen plotters are well known methods for printing various information including labels and multi-colored graphics. Presentation of such information has created a demand for transparent ink-receptive imageable receptors that are used as overlays in technical drawings and as transparencies for overhead projection. Imaging with either the ink jet printer or the pen plotter involves depositing ink on the surface of these transparent receptors.
  • These imaging devices conventionally utilize inks that can remain exposed to air for long periods of time without drying. Since it is desirable that the surface of these receptors be dry and non-tacky to the touch, even after absorption of significant amounts of liquid soon after imaging, transparent materials that are capable of absorbing significant amounts of liquid while maintaining some degree of durability and transparency, are useful as imageable receptors for imaging. Liquid-absorbent materials disclosed in U.S. Patent Nos. 5,134,198, 5, 192,617,
  • 5,219,928 and 5,241,006 attempt to improve drying and decrease dry time.
  • These materials comprise crosslinked polymeric compositions capable of forming continuous matrices for liquid absorbent semi-interpenetrating polymer networks.
  • These networks are blends of polymers wherein at least one of the polymeric components is crosslinked after blending to form a continuous network throughout the bulk of the material, and through which the uncrosslinked polymeric components are intertwined in such a way as to form a macroscopically homogeneous composition.
  • Such compositions are useful for forming durable ink absorbent, transparent graphical materials.
  • WO 8806532 discloses a recording transparency and an aqueous method of preparation.
  • the transparency is coated with a hydroxyethylcellulose polymer or mixture of polymers.
  • the coating solution may also contain a surfactant to promote leveling and adhesion to the surface, and hydrated alumina in order to impart pencil tooth to the surface.
  • U.S. Patent No. 5,120,601 discloses a recording sheet comprising an ink receiving layer containing highly water absorptive 1 to 100 ⁇ m resin particles and a binder.
  • the resin particles protrude to a height of not less than 1 ⁇ m from the surface of the binder layer and comprise from 50 to 5,000 per 1 mm 2 surface.
  • the resin particles include sodium, lithium and potassium polyacrylates; vinyl alcohol/acrylamide copolymer; sodium acrylate/acrylamide copolymer; cellulose polymers; starch polymers; isobutylene/maleic anhydride copolymer; vinyl alcohol/acrylic acid copolymer; polyethylene oxide modified products; dimethyl ammonium polydiallylate, and quaternary ammonium polyacrylate.
  • Useful binders can be any hydrophilic resin, e.g., starch, gelatin, celluloses, polyethyleneimine, polyacrylamide, polyvinyl- pyrrolidones polyvinyl alcohols, polyester, sodium polyacrylate, polyethylene oxide, poly-2-hydroxyethyl methacrylate, crosslinked hydrophilic polymers, hydrophilic water soluble polymer complexes, and the like.
  • hydrophilic resin e.g., starch, gelatin, celluloses, polyethyleneimine, polyacrylamide, polyvinyl- pyrrolidones polyvinyl alcohols, polyester, sodium polyacrylate, polyethylene oxide, poly-2-hydroxyethyl methacrylate, crosslinked hydrophilic polymers, hydrophilic water soluble polymer complexes, and the like.
  • US Patent No. 4,636,805 discloses a recording medium comprising an ink receiving layer capable of fixing an ink within 3 minutes at 20°C and 65% RH to the extent of 0.7ml/cm 2 .
  • One embodiment contains hydroxyethyl cellulose.
  • Other materials are disclosed such as various gelatins; polyvinyl alcohols; starches; cellulose derivatives; polyvinylpyrrolidone, polyethyleneimine; polyvinylpyridium halide, sodium polyacrylate, SBR and NBR latexes; polyvinylformal; PMMA; polyvinylbutyral; polyacrylonitrile; polyvinyl chloride; polyvinylacetate; phenolic resins and so on.
  • 4,701,837 discloses a light transmissive recording medium having an ink receiving layer formed mainly of a water soluble polymer and a crosslinking agent.
  • the crosslinked polymer has a crosslinking degree satisfying the water resistance of the receiving layer while giving the layer the ink receiving capacity of 0.2 ml/cm 2 .
  • the water soluble polymer may include natural polymers or modified products thereof such as gelatin, casein, starch, gum arabic, sodium alginate, hydroxyethyl cellulose, carboxyethyl cellulose and the like; polyvinyl alcohols; complete or partially saponified products of vinylacetate and other monomers; homopolymers or copolymers with other monomers of unsaturated carboxylic acids such as (meth)acryl ⁇ c acid, maleic acid, crotonic acid and the like, copolymers or homopolymers with other vinyl monomers of sulfonated vinyl monomers such as vinylsulfonic acid, sulfonated styrene and the like, copolymers or homopolymers with other vinyl monomers of (meth)acrylamide, copolymers or homopolymers with other vinyl monomers of ethylene oxide, terminated polyurethanes having blocked isocyanate groups, polyamides having such groups as mentioned above, polyethyleneimine, polyurethane, polyester, and so on
  • US Patent No 5,277,965 discloses a recording medium comprising a base sheet with an ink receiving layer on one surface, and a heat absorbing layer on the other, and an anti-curl layer coated on the surface of the heat absorbing layer
  • the materials suitable for the ink-receptive layer can include hydrophilic materials such as binary blends of polyethylene oxide with one of the following group hydroxypropyl methyl cellulose (Methocel), hydroxyethyl cellulose, water-soluble ethylhydroxyethyl cellulose, hydroxybutylmethyl cellulose, hydroxypropyl cellulose, methyl cellulose, hydroxyethylmethyl cellulose, vinylmethyl ether/maleic acid copolymers, acrylamide/acrylic acid copolymers, salts of carboxymethylhydroxyethyl cellulose, cellulose acetate, cellulose acetate hydrogen phthalate, hydroxypropyl methyl cellulose phthalate, cellulose sulfate, PVA, PVP, vinyl alcohol/vin
  • acrylamide/acrylic acid copolymer (6) cellulose sulfate, (7) poly(2-acrylamido-2- methylpropane) sulfonic acid; (8) poly( vinyl alcohol); (9) poly( vinyl pyrrolidone); and (10) hydroxypropyl methyl cellulose.
  • U.S. Patent No. 5,068, 140 discloses a transparency comprised of a supporting substrate and an anticurl coating or coatings thereunder.
  • the transparency comprises of an anticurl coating comprising two layers.
  • the ink receiving layer in one embodiment is comprised of blends of poly(ethylene oxide), mixtures of poly(ethylene oxide) with cellulose such as sodium carboxymethyl cellulose, hydroxymethyl cellulose and a component selected from the group consisting of (1) vinylmethyl ether/maleic acid copolymer, (2) hydroxypropyl cellulose; (3) acrylamide/acrylic acid copolymer, (4) sodium carboxymethylhydroxyethyl cellulose; (5) hydroxyethyl cellulose; (6) water soluble ethylhydroxyethyl cellulose; (7) cellulose sulfate; (8) poly(vinyl alcohol); (9) polyvinyl pyrrolidone; (10) poly(acrylamido 2-methyl propane sulfonic acid); (1 1) poly(diethylenetriamine- co
  • U.S. Patent No. 5,342,688 addresses this bleeding problem. It discloses an improved ink-receptive sheet comprising a transparent substrate bearing on at least one major surface thereof an ink-receptive layer which comprises at least one hydrophilic liquid absorbent polymer and an effective amount of polymeric mordant comprising a guanidine functionality.
  • an ink- receptive sheet useful for projecting an image commonly called a "transparency" which, when coated with an ink-receptive coating and imaged with an ink depositing device can be successfully printed with pigmented typed-inks with good image quality.
  • Preferred embodiments of this invention also have reduced image bleeding, improved shelf life, even when it is exposed to elevated temperature and high humidity, or in cases where solvent is prevented from leaving the coating, e.g., when stored in a transparency protector, and also display excellent drytimes
  • the present invention discloses a copolymer which when added to an ink- absorbent layer, can improve the dry time of that layer while giving good image quality.
  • Improved ink-receptive sheets of the invention have a substrate with an ink- receptive coating thereon.
  • Ink-receptive coatings used herein comprise a hydrophilic liquid absorbent polymer, a copolymer which provides fast drying and an admixture of other additives which work together to provide a coating which will, when imaged, provide a fast-drying, high-quality image with no surface cracks or bleeding.
  • the ink-receptive coatings used in sheets of the invention comprise a blend of from 15% to 45% by weight of a polyethylene-acrylic acid copolymer and from 55% to 85% by weight of at least one hydrophilic liquid absorbent polymer.
  • the presence of the polyethylene-acrylic acid copolymer improves the drytime of the coating while maintaining good image quality, when printed with aqueous inks.
  • the polyethylene- acrylic acid copolymer preferably has at least 10% by weight acrylic acid content, more preferably at least 20% by weight acrylic acid content.
  • this invention comprises an ink-receptive coating system comprising at least two layers, a thick base layer for ink absorption comprising a polyethylene-acrylic acid copolymer and a hydrophilic liquid absorbent polymer, and a thin ink-transmissive upper layer which may function to improve tack, feeding, dry time, bleed, mud-cracking, wetting, and the like.
  • the base layer comprises a blend having from 15% to 45% by weight polyethylene-acrylic acid copolymer and from 55% to 85% of at least one hydrophilic liquid absorbent polymer
  • the ink-transmissive upper layer comprises a relatively high viscosity methylcellulose or hydroxypropylmethylcellulose, or blends thereof, e.g., having a viscosity of more than 2,000 centipoise in a 20% aqueous solution.
  • a highly preferred embodiment of the ink-receptive coating system have two layers, wherein the base layer comprises a polyethylene-acrylic acid copolymer and polyvinylpyrrolidone, and the ink-transmissive layer comprises a) a high viscosity methylcellulose binder, hydroxypropylmethylcellulose, or blends thereof, and b) an organic acid salt selected from the group consisting of salts of polyethyleneimine and salts of substituted polyethyleneimine.
  • Optional ingredients such as a mordant can also be present either in the top layer or the base or both layers.
  • the thickness of the single layer coating and the base layer for the two-layer coating system preferably ranges from 10 ⁇ m to 40 ⁇ m; when used, the ink- transmissive upper layer preferably has a thickness of from 0.5 ⁇ m to 10 ⁇ m.
  • mud-cracking means a physical cracking or fracturing of the pigmented ink layer of image resulting in lower density and quality. The cracks are so called because they resemble the cracking visible in the mud of a dried river bed. 2.
  • hydrophilic and “hydrophilic surface” are used to describe a material that is generally receptive to water, either in the sense that its surface is wettable by water or in the sense that the bulk of the material is able to absorb significant quantities of water. Materials that exhibit surface wettability by water have hydrophilic surfaces.
  • hydrophilic liquid-absorbing materials means materials that are capable of absorbing significant quantities of water, aqueous solutions, including those materials that are water-soluble.
  • hydrophobic and hydrophobic surface refer to materials which have surfaces not readily wettable by water. Monomeric units will be referred to as hydrophobic if they form water-insoluble polymers capable of absorbing only small amounts of water when polymerized by themselves.
  • the term "mordant” means a compound which, when present in a composition, interacts with a dye to prevent diffusion of dye through the composition.
  • pigment layer means that layer generated on the surface of the transparency comprised of the pigment, polymeric dispersants, and various components from the receptor layer.
  • high viscosity when used to refer to the methylcellulose compound, means having a viscosity of at least 2,000 centipoise when in a 20% aqueous solution.
  • ink jet printing large amounts of liquid are placed onto the surface to be imaged, relative to other types of printing.
  • the printing surface must be able to absorb all the liquid and dry quickly. If an ink-receptive sheet does not dry within minutes or even seconds, it will not meet with consumer approval. Delays in drying cause smudging of the image, handling problems, and the inability to use the sheets immediately Further, if stacked or stored before completely dry, they will stick to one another, or to a storage envelope
  • the ink-receptive sheets of the present invention comprise a coating system which may comprise a single relatively thick liquid-absorbent layer, or a two-layer coating system having a thick base layer and a thinner ink-transmissive upper layer Where a single layer is used, the thickness of the single layer preferably ranges from 10 ⁇ m to 40 ⁇ m Where a two-layer coating system is used, the base layer is the same thickness as the single layer coating, and the ink-transmissive upper layer preferably has a thickness of from 0 5 ⁇ m to 10 ⁇ m
  • the absorbent layer comprises a blend of polymers to total 100%, from 15% to 45% by weight of the blend is a polyethylene-acrylic acid copolymer, correspondingly, from 55% to 85% by weight is at least one liquid-absorbent polymer
  • Preferred blends comprise from 20% to 35% of the polyethylene-acrylic acid copolymer
  • Presence of polyethylene-acrylic copolymers in the blend improves the dry time while maintaining good image quality
  • Preferred copolymers include those having at least 10% ⁇ by weight acrylic acid content, more preferably at least 20% by weight acrylic acid content
  • liquid absorbent hydrophilic polymeric compounds used in the single layer system, and base layer of the two-layer system, along with the polyethylene- acrylic acid polymer include uncrosslinked hydrophilic liquid absorbent polymers such as polyacrylamides, polyvinylpyrrolidone and modified polyvinyl pyrrolidones, polyvinyl alcohol and modified polyvinyl alcohols, and other hydrophilic and liquid absorptive polymers comprising copolymerizable monomers such as a) nitrogen-containing hydrophilic, and water absorptive monomers selected from the group consisting of vinyl lactams such as N-vinyl-2- pyrrolidone; acrylamide, methacrylamide and their N-mon
  • Modified polyvinylpyrrolidones include such copolymers as NVP/vinyl acetate copolymers, e.g., those available commercially from as “S-630" and “W735", NVP/DMAEMA copolymers available as Gafquat® 755, NVP/acrylic acid copolymers, available as ACRYLIDONE®, and NVP MEAHEMA AA copolymers, such as "copolymer 958", all of which are available from I.S.P. Technologies Inc., Wayne, NJ.
  • Modified polyvinylalcohols include polyvinylalcohols having various percentages of vinylacetate, and the like.
  • the preferred material for the liquid absorbent layer is a blend of polyvinylpyrrolidone and polyethylene-acrylic acid.
  • the preferred polyethylene-acrylic acids include those having at least 10%, preferably at least 20% by weight acrylic acid content.
  • PVP-K-90 polyvinylpyrrolidone
  • Primacor® 5980 polyethylene-acrylic acid copolymer having 20% acrylic acid content
  • the liquid absorbent layer can also comprise a crosslinked semi- interpenetrating network, or "SIPN".
  • SIPN for this ink-receptive coating would be formed from polymer blends comprising (a) at least one crosslinkable polyethylene- acrylic acid copolymer, (b) at least one hydrophilic liquid absorbent polymer, and (c) a crosslinking agent.
  • the SIPNs are continuous networks wherein the crosslinked polymer forms a continuous matrix, as disclosed in U.S. Patents 5,389,723, 5,241,006, 5,376,727, and 5,208,092.
  • An ink-transmissive upper layer is also preferably present in addition to the liquid absorbent layer. This is applied on top of the liquid absorbent base layer.
  • This upper layer is thinner, and comprises polymeric materials such as polyvinylpyrrolidone, polyvinyl-alcohol, modified celluloses, and mixtures thereof.
  • the upper layer contains high viscosity modified cellulose binders such as methylcellulose, hydroxypropylmethylcellulose and hydroxyethyl-methylcellulose and mixtures thereof.
  • high viscosity modified cellulose binders such as methylcellulose, hydroxypropylmethylcellulose and hydroxyethyl-methylcellulose and mixtures thereof.
  • certain cellulose derivatives are unsuitable as binders for elimination of mud-cracking include hydroxyethyl cellulose, hydroxymethyl cellulose, and carboxymethyl cellulose, although these may be used as additives when they comprise less than 40% of the overall cellulose content, or where mud-cracking is not prevalent, or critical.
  • Cellulose derivatives less preferred as binders due to their hydrophobic nature, water insolubility, need for organic solvents, and tendency to cause coalescence of pigmented as well as colored ink jet inks include ethylcellulose, ethylhydroxyethyl cellulose and hydroxybutyl cellulose. These may again be used as additives with appropriate solvent blends when they comprise less than 40% of the overall cellulose content. Hydroxypropyl cellulose, although water soluble, is less suitable as a binder for the same reasons as the latter materials, although it may also be used as an additive when it comprises less than 40% of the overall cellulose content.
  • the upper layer can also comprise organic acid salts of polyethyleneimine for further improvements in the other properties including drytime, smudging of the images, image brightness and bleeding.
  • Useful acids include dicarboxylic acid derivatives, containing 2-14 carbon atoms, phthalic acids, hydrochloric acid, boric acid, and substituted sulfonic acids, such as methanesulfonic acid, with preferred one being p-toluenesulfonic acid.
  • the upper layer may also comprise additives in addition to the celluloses mentioned above that can improve drytimes, color quality, tack, and the like, in greater quantities which do not degrade the mud-cracking performance of the pigmented ink.
  • additives include water soluble polymers such as polyacrylic acid, polyvinylpyrrolidone, GAF Copolymer 845, polyethylene oxide, water soluble starches, e.g. Staylok® 500 and water dispersible and water suspendible clays, e.g. Laponite® RDS, and inorganic sols as long as these additives comprise less than 40% of the topcoat solids.
  • Other additives may include colloidal silica, boric acid, and surfactants.
  • Another additive which may be present to control curl is a plasticizing compound, which is added to the base layer of the film.
  • Compounds can include low molecular weight polyethylene glycols, polypropylene glycols, or polyethers; for example PEG 600 or Pycal® 94.
  • a mordant can also be present either in the top layer, the base layer, or both. If present in the top layer or base layer, the amount is preferred to range from 1 part by weight to 20 parts by weight of the solids, preferably from 3 parts by weight to 10 parts by weight.
  • Feedability and antiblocking properties may also be controlled by the addition of a particulate.
  • Suitable particulates include starches, glass beads, silicas, polymeric microspheres and beads, with a preferred embodiment comprising polymethyl methacrylate (PMMA) beads.
  • PMMA polymethyl methacrylate
  • Levels of particulate are limited by the requirement that the final coating be transparent with a haze level of 15% or less, as measured according to ASTM D 1003-61 (Reapproved 1979).
  • the preferred mean particle diameter for particulate material is from 5 to 40 micrometers, with at least 25% of the particles having a diameter of 15 micrometers or more. Most preferably, at least 50% of the particulate material has a diameter of from 20 micrometers to 40 micrometers. While the particulate may be added to either or both layers, preferred embodiments contain the particulate in the upper layer.
  • Useful additives include such as catalysts, thickeners, adhesion promoters, glycols, defoamers, surfactants and the like, so long as the addition does not negatively impact the drying time.
  • the ink-receptive layer(s), can be applied to the film backing by any conventional coating technique, e.g., deposition from a solution or dispersion of the resins in a solvent or aqueous medium, or blend thereof, by means of such processes as Meyer bar coating, knife coating, reverse roll coating, rotogravure coating, and the like. When two layers are used, the upper layer can then be applied thereover by the same or other conventional processes.
  • Drying of the ink-receptive layer(s) can be effected by conventional drying techniques, e.g., by heating in a hot air oven at a temperature appropriate for the specific film backing chosen. For example, a drying temperature of about 120°C is suitable for a polyester film backing.
  • Film substrates may be formed from any polymer capable of forming a self- supporting sheet, e.g., films of cellulose esters such as cellulose triacetate or diacetate, polystyrene, polyamides, vinyl chloride polymers and copolymers, polyolefin and polyallomer polymers and copolymers, polysulphones, polycarbonates, polyesters, and blends thereof.
  • cellulose esters such as cellulose triacetate or diacetate, polystyrene, polyamides, vinyl chloride polymers and copolymers, polyolefin and polyallomer polymers and copolymers, polysulphones, polycarbonates, polyesters, and blends thereof.
  • Suitable films may be produced from polyesters obtained by condensing one or more dicarboxylic acids or their lower alkyl diesters in which the alkyl group contains up to 6 carbon atoms, e.g., terephthalic acid, isophthalic, phthalic, 2,5-,2,6-, and 2,7-naphthalene dicarboxylic acid, succinic acid, sebacic acid, adipic acid, azelaic acid, with one or more glycols such as ethylene glycol, 1,3-propanediol, 1,4-butanediol, and the like.
  • dicarboxylic acids or their lower alkyl diesters in which the alkyl group contains up to 6 carbon atoms, e.g., terephthalic acid, isophthalic, phthalic, 2,5-,2,6-, and 2,7-naphthalene dicarboxylic acid, succinic acid, sebacic acid, adipic acid,
  • Preferred film substrates or backings are cellulose triacetate or cellulose diacetate, poly(ethylene naphthalate), polyesters, especially poly(ethylene terephthalate), and polystyrene films. Poly(ethylene terephthalate) is most preferred. It is preferred that film backings have a caliper ranging from 50 ⁇ m to 200 ⁇ m. Film backings having a caliper of less than 50 ⁇ m are difficult to handle using conventional methods for graphic materials. Film backings having calipers over 200 ⁇ m are stiffer, and present feeding difficulties in certain commercially available ink jet printers and pen plotters. When polyester film substrates are used, they can be biaxially oriented to impart molecular orientation, and may also be heat set for dimensional stability during fusion of the image to the support. These films may be produced by any conventional extrusion method.
  • primers include those known to have a swelling effect on the film backing polymer. Examples include halogenated phenols dissolved in organic solvents.
  • the surface of the film backing may be modified by treatment such as corona treatment or plasma treatment.
  • Image-receptive sheets of the invention are particularly suitable for the production of imaged transparencies for viewing in a transmission mode or a reflective mode, i.e., in association with an overhead projector.
  • Fig. l it is shown that when the percentage of polyethylene-acrylic acid copolymer present in the polymer blend of the ink-receptive layer is between 15% and 45%, the drytime is approximately 5 minutes or less. When the percentage either decreases below 15%, or increase 45%, the dry time increases. At highly preferred percentages of from 20% to 35%, the dry time is approximately 4 minutes or less.
  • the transmissive image density is measured using Macbeth TD 903 densitometer with the gold and status A filters.
  • the environmental conditions for this test are 70°C and 50% relative humidity (RH).
  • the print pattern consists of solid fill columns of adjacent colors. The columns are 1/4" to 1/2' wide, and 6-9 inches long.
  • After printing the material is placed on a flat surface, then placed in contact with bond paper. A 2 kg rubber roller 2.5" wide is then twice rolled over the paper.
  • the paper is then removed, and the dry time, D ⁇ is calculated by using the following formula: where T D is the length of time between the end of the printing and placing the image in contact with the bond paper.
  • L ⁇ is the length of image transfer to paper;
  • L P is the length of the printed columns, and T P is the time of printing. Examples Examples 1-2 and Comparative Examples 3C-5C
  • a coating solution for the single layer was prepared containing 20 g of a 10% aqueous solution of polyvinylpyrrolidone, available as PVP-K-90 from I.S.P, 9 g of a 10% aqueous solution of polyoxyethylene aryl ether plasticizer, available as Pycal® 94 from International Chemical Industries, and 10 g of a 20% aqueous solution of polyethylene-acrylic acid copolymer in water/ammonium hydroxide, available as Primacor® from Dow Chemical. After mixing, the mixture was coated onto a 100 ⁇ m thick polyvinylidine chloride (PVDC) primed polyethylene terephthalate (PET) film at 200 ⁇ m wet thickness and then dried at 126°C for 2.5 minutes.
  • PVDC polyvinylidine chloride
  • PET polyethylene terephthalate
  • Example 2 was coated in a similar way with the same level of Pycal® 94.
  • the various polymer compositions are shown in Table 1.
  • This two layer example was made with a base layer similar to the single layer made in Example 1, and this layer was overcoated with an upper layer made as follows:
  • Examples 7-9 These ink-receptive sheets were 2-layer films.
  • the base layer was made using the same formulation used in Example 2, and the top layers were as shown in Table 3.
  • Example 9 exhibited mud-cracking, which shows that when a two-layer coaling system where the upper layer is made without a modified cellulose binder, mud-cracking is likely.
  • Dry Time (min.) Dry Time (min.) cyan 2 1 1 magenta 1 8 yellow 1 8 red 4 >11 green 4 >11 blue 3 >11 black 6 >1 1
  • Example 12 A series of ink-receptive sheets were prepared composed solely of varying ratios of polymer blends of polyvinylpyrrolidone, commercially designated PVP-K-90 from I S P and the 20% aqueous solution of polyethylene-acrylic acid copolymer in water/ammonium hydroxide, available as Primacor® from Dow Chemical.
  • the sample ratios were varied in increments of 5% starting from 60% by weight polyethylene- acrylic acid/40% by weight polyvinylpyrrolidone and going to 10% by weight polyethylene-acrylic acid/90% by weight polyvinylpyrrolidone.
  • the samples were coated to a dry weight of 0.8g m 2 from the 20% aqueous solution using a knife coater, with a gap setting of 75 micrometers. This thickness, while above that preferred for commercial use, provides similar drying characteristics to those thicknesses.

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

Abstract

L'invention concerne une feuille réceptive à l'encre à séchage rapide comprenant un revêtement comportant un mélange de 55 à 85 % d'au moins un polymère hydrophile absorbant les liquides, et de 15 à 45 % d'un copolymère de polyéthylène-acide acrylique, présentant de préférence une teneur en acide acrylique d'au moins 10 %; un tel revêtement peut être utilisé seul, ou de préférence comme partie d'un système de revêtement comprenant également une couche supérieure apte à la transmission d'encre présentant des propriétés améliorées de résistance à la fissuration de dessiccation.
PCT/US1997/011747 1996-08-02 1997-07-03 Feuille receptive a l'encre WO1998005512A1 (fr)

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AU35949/97A AU3594997A (en) 1996-08-02 1997-07-03 Ink-receptive sheet

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Application Number Priority Date Filing Date Title
US69089196A 1996-08-02 1996-08-02
US08/690,891 1996-08-02

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WO1998005512A1 true WO1998005512A1 (fr) 1998-02-12

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029512A1 (fr) * 1997-12-05 1999-06-17 Minnesota Mining And Manufacturing Company Feuille receptive a l'encre
WO1999065701A1 (fr) * 1998-06-19 1999-12-23 Minnesota Mining And Manufacturing Company Support recepteur de jet d'encre comportant un inhibiteur de flux d'encre et procedes de fabrication et d'utilisation correspondants
EP1108559A1 (fr) * 1999-12-13 2001-06-20 Sony Chemicals Corporation Matériau d'enregistrement imprimé sur la surface arrière pour l'impression par jet d'encre
US6383612B1 (en) 1998-06-19 2002-05-07 3M Innovative Properties Company Ink-drying agents for inkjet receptor media
US6514599B1 (en) 1999-04-16 2003-02-04 3M Innovative Properties Company Inkjet receptor medium having a multi-staged ink migration inhibitor and method of making and using same
US6632510B1 (en) 1997-07-14 2003-10-14 3M Innovative Properties Company Microporous inkjet receptors containing both a pigment management system and a fluid management system
US6677007B1 (en) 1999-02-12 2004-01-13 3M Innovative Properties Company Image receptor medium and method of making and using same
US6703112B1 (en) 1998-06-19 2004-03-09 3M Innovative Properties Company Organometallic salts for inkjet receptor media
US8012551B2 (en) 2008-05-29 2011-09-06 International Paper Company Fast dry coated inkjet paper
US10036123B2 (en) 2005-11-01 2018-07-31 International Paper Company Paper substrate having enhanced print density

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EP0227245A2 (fr) * 1985-12-16 1987-07-01 Canon Kabushiki Kaisha Matériau pour l'enregistrement et procédé d'enregistrement utilisant ce matériau
US4889765A (en) * 1987-12-22 1989-12-26 W. R. Grace & Co. Ink-receptive, water-based, coatings
EP0583141A2 (fr) * 1992-08-13 1994-02-16 Canon Kabushiki Kaisha Méthode et appareil pour l'impression par jet d'encre
WO1996026841A1 (fr) * 1995-02-28 1996-09-06 Minnesota Mining And Manufacturing Company Feuilles presentant une receptivite a l'encre
WO1996026840A1 (fr) * 1995-02-28 1996-09-06 Minnesota Mining And Manufacturing Company Enduit absorbant receptif a l'encre

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EP0227245A2 (fr) * 1985-12-16 1987-07-01 Canon Kabushiki Kaisha Matériau pour l'enregistrement et procédé d'enregistrement utilisant ce matériau
US4889765A (en) * 1987-12-22 1989-12-26 W. R. Grace & Co. Ink-receptive, water-based, coatings
EP0583141A2 (fr) * 1992-08-13 1994-02-16 Canon Kabushiki Kaisha Méthode et appareil pour l'impression par jet d'encre
WO1996026841A1 (fr) * 1995-02-28 1996-09-06 Minnesota Mining And Manufacturing Company Feuilles presentant une receptivite a l'encre
WO1996026840A1 (fr) * 1995-02-28 1996-09-06 Minnesota Mining And Manufacturing Company Enduit absorbant receptif a l'encre

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6632510B1 (en) 1997-07-14 2003-10-14 3M Innovative Properties Company Microporous inkjet receptors containing both a pigment management system and a fluid management system
WO1999029512A1 (fr) * 1997-12-05 1999-06-17 Minnesota Mining And Manufacturing Company Feuille receptive a l'encre
WO1999065701A1 (fr) * 1998-06-19 1999-12-23 Minnesota Mining And Manufacturing Company Support recepteur de jet d'encre comportant un inhibiteur de flux d'encre et procedes de fabrication et d'utilisation correspondants
US6383612B1 (en) 1998-06-19 2002-05-07 3M Innovative Properties Company Ink-drying agents for inkjet receptor media
US6537650B1 (en) 1998-06-19 2003-03-25 3M Innovative Properties Company Inkjet receptor medium having ink migration inhibitor and method of making and using same
US6703112B1 (en) 1998-06-19 2004-03-09 3M Innovative Properties Company Organometallic salts for inkjet receptor media
US6677007B1 (en) 1999-02-12 2004-01-13 3M Innovative Properties Company Image receptor medium and method of making and using same
US6514599B1 (en) 1999-04-16 2003-02-04 3M Innovative Properties Company Inkjet receptor medium having a multi-staged ink migration inhibitor and method of making and using same
EP1108559A1 (fr) * 1999-12-13 2001-06-20 Sony Chemicals Corporation Matériau d'enregistrement imprimé sur la surface arrière pour l'impression par jet d'encre
US6818266B2 (en) 1999-12-13 2004-11-16 Sony Chemicals Corp. Backprinting recording medium
US10036123B2 (en) 2005-11-01 2018-07-31 International Paper Company Paper substrate having enhanced print density
US8012551B2 (en) 2008-05-29 2011-09-06 International Paper Company Fast dry coated inkjet paper

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