WO2006011797A1 - Support d'impression - Google Patents

Support d'impression Download PDF

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Publication number
WO2006011797A1
WO2006011797A1 PCT/NL2005/000553 NL2005000553W WO2006011797A1 WO 2006011797 A1 WO2006011797 A1 WO 2006011797A1 NL 2005000553 W NL2005000553 W NL 2005000553W WO 2006011797 A1 WO2006011797 A1 WO 2006011797A1
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WO
WIPO (PCT)
Prior art keywords
formula
medium according
compound
overlayer
gelatin
Prior art date
Application number
PCT/NL2005/000553
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English (en)
Inventor
Willem Johannes Van Baak
Jacko Hessing
Akira Kase
Original Assignee
Fuji Photo Film B.V.
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 Fuji Photo Film B.V. filed Critical Fuji Photo Film B.V.
Publication of WO2006011797A1 publication Critical patent/WO2006011797A1/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
    • B41M5/5227—Macromolecular coatings characterised by organic non-macromolecular additives, e.g. UV-absorbers, plasticisers, surfactants
    • 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
    • B41M5/52—Macromolecular coatings

Definitions

  • the invention is directed to recording media, in particular swellable inkjet recording media.
  • InkJet printers may usually be classified as either thermal inkjet printers that use heat to transfer the ink from the ink cartridge to the recording medium or inkjet printers which are based on Piezo technology, wherein instead of a heating element, each nozzle's ink chamber contains a Piezo crystal, which upon application of an electric current vibrates and thus forces the ink out of the nozzle to the recording medium.
  • the present invention relates to a recording medium which comprises a support and an ink receiving layer adhered to said support, wherein the ink receiving layer is a multilayer having at least one layer comprising a water soluble polymer and at least one compound according to general formula I: 1
  • X 1 , X2 and X3 are C and the other(s) is(are) N, wherein Xi, X2, X3 and the two N atoms in the 1 and 3 position form a five ring; Ri is cyclic C ⁇ ; and
  • R2 and R3 are substituents each independently selected from H, Ci- Ce alkyl, hydroxyl, C 1 - C2 alkoxy, mercapto, Ci-Ce alkylthio, amino, alkylamino, dialkylamino, halogen, sulfonyl, and carboxyl; wherein Ri may be absent if X2 is N, R2 may be absent if X3 is N and R3 may be absent if Xi is N; or Ri and R2 combined form a 6-membered ring fused to the five ring, which 6-membered ring may be heterocyclic and is optionally substituted, wherein each of the bonds may be single or double.
  • Preferred compounds to be used according to the present invention are those of formula II:
  • Xi, X2 and X4 are each independently selected from C and N; and R3, R4, R5, Re and R7 are substituents each selected independently from H, Ci-Ce alkyl (methyl, ethyl, propyl, butyl, pentyl, hexyl), hydroxyl, C1-C2 alkoxy (methoxy, ethoxy), mercapto, Ci-C ⁇ alkylthio (methylthio, ethylthio, propylthio, butylthio, pentylthio, hexylthio), amino, Ci- C ⁇ alkylamino, Ci-C ⁇ dialkylamino, halogen (chloro, bromo, iodo), sulfonyl, and carboxyl, wherein R3 may be absent if Xi is N and R 7 may be absent if X4 is N.
  • Preferred compounds in accordance with formula II are triazaindolizine compounds (also referred to as tetra-azaindene compounds), in particular compounds having a structure of formula III:
  • Preferred indene compounds are 4-hydroxy-6-methyl-l,3,3a,7-tetra- aza indene (formula Va; also described in EP-A-I 340 621) and 4-hydroxy-2- methylthio-6-methyl-l,3,3a,7-tetra-aza indene (formula Vb; also described in EP-A-I 340 621):
  • Suitable compounds in accordance with formula (II) are compounds containing a triazole ring, in particular lH-benzotriazole (formula VI): wherein R 4 , Rs, Re and R 7 have the same meaning as defined with formula II above.
  • Suitable compounds in accordance with formula (I) are tetrazole compounds, in particular l-phenyltetrazole-5-thiol (formula VII):
  • R9 and R 10 are substituents each selected independently from hydroxyl, alkoxy, carboxyl, alkylcarbamido, amino, acetamino, chloro, sulfon and carbamoyl. These tetrazole compounds are usually less preferred because of their price.
  • R3, R4, R5, Re and R7 have the same meaning as defined with formula II above.
  • benzimidazole derivatives are sodium-2- mercaptobenzimidazole-5-sulfonate, hydroxybenzimidazoles, mercapto- benzinaidazoles and methylbenzimidazoles (all available from Merck KgaA, Germany).
  • inkjet recording media viz. media suitable to be printed on using inkjet printers
  • the compounds mentioned above are applied as an aqueous solution. If necessary to increase the solubility in water a high pH can be applied e.g. a pH of 9 or 10.
  • the compounds mentioned above are preferably used in an amount up to 10 mmol/m 2 , more preferably in an amount between 0.5 and 5 mmol/m 2 , most preferably in an amount between 0.5 and 4 mmol/m 2 , depending on the total layer thickness.
  • the compounds mentioned above are used in the ink receiving layer.
  • the ink receiving layer is a multilayer comprising an underlayer and an overlayer which both can be a multilayer of sublayers.
  • a toplayer is provided on top of the overlayer.
  • the compounds mentioned above are preferably applied in the outermost layer or layers of the multilayer (viz. furthest away from the support).
  • a toplayer it is preferable to add above mentioned compounds in a layer under the toplayer, in order to achieve an optimal effect on beading. It was found that the physical environment in which these compounds are active has an important influence on the effectiveness of the mentioned compounds. In an environment of gelatin no effect on beading is observed.
  • the presence of water soluble polymers other than gelatin appeared necessary to provide a stabilising matrix. Without the presence of water soluble polymers, no improvement of beading is observed.
  • the weight ratio of water soluble polymer/gelatin in the overlayer is at least 1. More preferably this the weight ratio is at least 2. A high ratio is beneficial for an optimal effect.
  • Water soluble polymers that are suitable for using in combination with the compounds of the invention include polyvinyl alcohol (PVA)-based polymers, such as fully hydrolysed or partially hydrolysed PVA, carboxylated PVA, acetoacetylated PVA, quaternary ammonium modified PVA, copolymers and terpolymers of PVA with other polymers, watersoluble cellulose derivatives such as alkyl cellulose ⁇ e.g. methyl cellulose), hydroxyalkyl cellulose (e.g. hydroxyethyl cellulose or hydroxypropyl cellulose), carboxyalkyl cellulose (e.g.
  • PVA polyvinyl alcohol
  • carboxymethyl cellulose carboxymethyl cellulose
  • dextrin casein, gum arabic, dextran
  • polyacrylic acid and its copolymers or terpolymers polymethylacrylic acid and its copolymers or terpolymers, and any other polymer, which contain monomers of carboxylic acids such as acrylic acid, methacrylic acid, maleic acid and crotonic acid, polyvinylpyrolidone (PVP), polyethyleneoxide (PEO), polyacrylamide, polymers of 2-pyrrolidone and its derivatives such as N-(2- hydroxyethyl)-2-pyrrolidone and N-cyclohexyl-2-pyrrolidone, urea and its derivatives such as imidazolidinyl urea, diazolidinyl urea, 2-hydroxyethylethylene urea, and ethylene urea.
  • PVP polyvinylpyrolidone
  • PEO polyethyleneoxide
  • polyacrylamide polymers of 2-pyrrolidone
  • PVA-based polymers are those which have been modified to give a good miscibility with aqueous solutions of gelatin. These modifications are such, that in the PVA-based polymer back bone groups are introduced which provide a hydrogen bonding site, an ionic bonding site, carboxylic groups, sulphonyl groups, amide groups and the like, thus providing a modified PVA-based polymer.
  • PVA-NVF poly(vinyl alcohol)-co-poly(n-vinyl formamide) copolymer
  • Very suitable PVA-NVF copolymers for use with the present invention are the copolymers described in WO-A-03/054029, which have the general formula X:
  • Ri, and R3 are independently H, 3-propionic acid or Ci-C ⁇ alkyl ester thereof, or is 2-me thy 1- 3-propionic acid or Ci-Ce alkyl ester thereof;
  • R2 and R 4 are independently H or Ci-C ⁇ alkyl.
  • the water soluble polymer in the overlayer is preferably applied in an amount ranging from 0.5 to 15 g/m 2 and more preferably from 1.0 to 10 g/m 2 .
  • the overlayer may further comprise a gelatin.
  • the gelatin used in the overlayer can be any gelatin whether lime-processed or acid processed, hydrolysed or modified, made from animal collagen.
  • gelatin made from pig skin, pig bone, cow skin or cow bone is used.
  • this toplayer preferably comprises a modified gelatin and optionally a fluorosurfactant. By using a modified gelatin a high gloss is obtained.
  • modified gelatin refers to gelatin compounds in which at least part of the NH2 groups is chemically modified.
  • a variety of modified gelatins can be used in the overlayer and/or in the toplayer. Good results are obtained, when at least 30% of the NH2 groups of the gelatin is modified by a condensation reaction with a compound having at least one carboxylic group as described among others in DE-A-19721238.
  • the compound having at least one carboxylic group can have an other functional group like a second carboxylic group and a long aliphatic tail, which in principle is not modified. Long tail in this context means from at least 5 to as much as 20 C atoms.
  • This aliphatic chain can be modified further to adjust the properties like water solubility and ink receptivity.
  • Particularly preferred gelatins of this type are succinic acid modified gelatins in which the succinic acid moiety contains an aliphatic chain from 5 to 20 carbon-atoms, where the chain can be further modified to a certain extend to adjust the water soluble properties or ink receptive properties.
  • Most preferred is dodecenylsuccinic acid modified gelatin, in which at least 30% of the NH2 groups of the gelatin have been modified with said dodecenylsuccinic acid.
  • modified gelatins for use with the present invention are described e.g. in EP-A-O 56 911, by V.N. Izmailova, et al. (Colloid Journal, vol. 64, No. 5, 2002, page 640-642), and by O. Toledano, et al. (Journal of Colloid and Interface Science 200, page 235-240).
  • Other suitable modified gelatins giving good results are gelatins modified to have quaternary ammonium groups.
  • An example of such a gelatin is the "CroquatTM" gelatin produced by Croda Colloids Ltd.
  • modified gelatins known in the common gelatin technology such as phtalated gelatins and acetylated gelatins are also suitable to be used in the toplayer and/or the overlayer.
  • Particularly suitable modified gelatins are available under the trade name ImagelTM.
  • the (modified) gelatin in the overlayer and/or toplayer is preferably applied in an amount ranging from 0.1 to 10 g/m 2 , more preferably from 0.2 to 8 g/m 2 .
  • the modified gelatin in the toplayer can be used alone or in combination with another water soluble polymer.
  • Suitable water soluble polymers are the same as mentioned above for use in the overlayer.
  • the toplayer and/or the overlayer may further comprise one or more fluorosurfactants, preferably in an amount of between 2.5 mg/m 2 and 250 mg/m 2 . It was found that this kind of surfactants improves amongst others the gloss and beading.
  • fluorosurfactant refers to surfactants (viz. molecules having a hydrophilic and a hydrophobic part) that contain fluorocarbon or a combination between fluorocarbon and hydrocarbon as the hydrophobic part. Suitable fluorosurfactants may be anionic, non-ionic or cationic.
  • fluorosurfactants are: fluoro C2-C20 alky lcarboxy lie acids and salts thereof, disodium N-perfluorooctanesulfonyl glutamate, sodium 3-(SuOrO-Ce-C 11 alkyloxy)-l-C3-C4 alkyl sulfonates, sodium 3-(omega -fluoro-C ⁇ -C ⁇ alkanoyl-N-ethylamino)-l-propane sulfonates, N-[3- (perfluorooctanesuh c onamide)-propyl]-N,N-dimethyl-N-carboxymethylene ammonium betaine, perfluoro alkyl carboxylic acids (e.g.
  • C ⁇ Cis-alkyl carboxylic acids and salts thereof, perfluorooctane sulfonic acid diethanolamide, Li, K and Na perfluoro C 4 -C 12 alkyl sulfonates, Li, K and Na N-perfluoro C 4 -C 1 S alkane sulfonyl— N-alkyl glycine, fluorosurfactants commercially available under the name Zonyl ® (produced by E.I.
  • the fluorosurfactant is chosen from Li, K and Na N- perfluoro C4-C13 alkane sulfonyl— N-alkyl glycine, 2-sulfo-l,4- bis(fluoroalkyl)butanedioate, 1,4-bis (fluoroalkyl)-2-[2-(N,N,N- trialkylammonium alkyl amino] butanedioate, perfluoroalkyl subsitituted carboxylic acids commercially available under the name Lodyne ® (produced by Ciba Specialty Chemicals Corp.) and fluoro surfactants commercially available under the name Zonyl® (produced by E.I.
  • Very suitable anti-blocking agents also known as matting agents
  • the amount of matting agent is from 0.01 to 1 g/m 2 , preferably from 0.02 to 0.5 g/m 2 .
  • the matting agent can be defined as particles of inorganic or organic materials capable of being dispersed in a hydrophilic organic colloid.
  • the overlayer and/or the toplayer may optionally include thickener agents, biocides, crosslinking agents, brightening agents and further various conventional additives such as colorants, colored pigments, pigment dispersants, mold lubricants, permeating agents, fixing agents for ink dyes, UV absorbers, light stabilising agents, anti-oxidants, dispersing agents, non-fluorosurfactants, anti-foaming agents, leveling agents, fluidity improving agents, antiseptic agents, brightening agents, viscosity stabilizing and/or enhancing agents, pH adjusting agents, anti-mildew agents, anti-fungal agents, agents for moisture-proofing, agents for increasing the stiffness of wet paper, agents for increasing the stiffness of dry paper and anti-static agents.
  • the above-mentioned various additives can be added ordinarily in a range of 0 to 10 weight % based on the solid content of the water soluble polymers and/or gelatin in the ink receiving layer composition.
  • the multilayer of the recording medium comprises an overlayer and an underlay er.
  • the overlayer may be a multilayer of sublayers.
  • the underlayer may be a multilayer of sublayers.
  • all layers are coated in a single step and the compounds of the invention are added to the mixture or mixtures of the underlayer. Before drying the compounds diffuse through the layers and are thought to be trapped by binding sites at the water soluble polymer present in the overlayer of the recording medium. Surprisingly by applying this method an even higher gloss level is achieved than when the compounds are added in the mixture for the overlayer. The mechanism for this enhanced gloss is not yet clear.
  • the underlayer typically comprises gelatin and at least one water soluble polymer.
  • Water soluble polymers suitable to be mixed with the (modified) gelatin include PVA-based polymers, such as fully hydrolysed or partially hydrolysed polyvinyl alcohol (PVA), carboxylated PVA, acetoacetylated PVA, quaternary ammonium modified PVA, copolymers and terpolymers of PVA with other polymers, watersoluble cellulose derivatives such as alkyl cellulose ⁇ e.g. methyl cellulose), hydroxyalkyl cellulose ⁇ e.g. hydroxyethyl cellulose or hydroxypropyl cellulose), carboxyalkyl cellulose ⁇ e.g.
  • carboxymethylalkyl cellulose carboxymethylalkyl cellulose
  • dextrin casein, gum arabic, dextran
  • polyacrylic acid and its copolymers or terpolymers polymethylacrylic acid and its copolymers or terpolymers, and any other polymer, which contain monomers of carboxylic acids such as acrylic acid, methacrylic acid, maleic acid and crotonic acid, polyvinylpyrolidone (PVP), polyethylene oxide, polyacrylamide, polymers of 2-pyrrolidone and its derivatives such as N-(2-hydroxyethyl)-2-pyrrolidone and N-cyclohexyl-2-pyrrolidone, urea and its derivatives such as imidazolidinyl urea, diazolidinyl urea, 2-hydroxyethylethylene urea, and ethylene urea.
  • PVP polyvinylpyrolidone
  • polyethylene oxide polyacrylamide
  • 2-pyrrolidone and its derivatives such
  • the quantity of gelatin used in the underlayer is preferably from 0.2 to 12.0 g/m 2 , more preferably from 0.4 to 9.0 g/m 2 .
  • the quantity of water soluble polymer used in the underlayer is preferably from 0.5 to 15.0 g/m 2 , more preferably from 1.0 to 8.0 g/m 2 .
  • the homogeneous aqueous solutions for the underlayer may further contain the following ingredients: - crosslinking agents such as aldehyde compounds, such as formaldehyde and glutaraldehyde, ketone compounds such as diacetyl and chloropentanedion, bis (2-chloroethylurea), triazine compounds such as 2- hydroxy-4, 6-dichloro-l,3,5-triazine, reactive halogen-containing compounds, carbamoyl pyridinium compounds, divinylsulfones, and the like.
  • - One or more plasticizers such as (poly)alkylene glycol, glycerol ethers and polymer lattices with low Tg-value such as polyethylacrylate, polymethylacrylate and the like.
  • mordants such as quaternary ammonium block copolymers, diaminoalkanes, ammonium quaternary salts and quaternary acrylic copolymer latexes, fluoro compounds, such as tetra ammonium fluoride hydrate, 2,2,2-trifluoroethylamine hydrochloride, l-(alpha, alpha, alpha - trifluoro-m-tolyl) piperazine hydrochloride, 4-bromo- alpha, alpha, alpha - trifluoro-o-toluidine hydrochloride, difluorophenylhydrazine hydrochloride, 4- fluorobenzylamine hydrochloride, 4-fluoro- alpha, alpha - dimethylphenethylamine hydrochloride, 2-fluoroethylaminehydrochloride, 2- fluoro-1-methyl pyridinium -toluene sulfonate, 4-fluorophene
  • One ore more conventional additives such as pigments, biocides, pH controllers, preservatives, viscosity modifiers, dispersing agents, UV absorbing agents, brightening agents, anti-oxidants, light stabilising agents, antistatic agents and/or anionic, cationic, non-ionic, and/or amphoteric surfactants in accordance with the objects to be achieved.
  • the above-mentioned additives may be added in a range of 0 to 20% by weight, based on the solid content of the water soluble polymers and/or gelatin in the ink receiving layer.
  • an adhesion promoting layer is applied between the support and the underlayer to enhance the adhesion of the coated layers onto the support.
  • This adhesion promoting layer may be coated in a separate step or simultaneously with the receiving layers.
  • the adhesion promoting layer is a thin layer, and preferably has a dry thickness of less than 3 ⁇ m, more preferably less than 1 ⁇ m.
  • the adhesion promoting layer comprises a gelatin or another water soluble polymer that promotes the adhesion of the underlayer.
  • the gloss of the medium can be improved by selecting the appropriate surface roughness of the used support. It was found, that providing a support having a surface roughness characterised by the value Ra being less than 1.0 ⁇ m, preferably below 0.8 ⁇ m a very glossy medium can be obtained. A low value of the Ra indicates a smooth surface.
  • the Ra is measured according to DIN 4776 using a UBM equipment, software package version 1.62 with the following settings:
  • the base paper to be used as the support for the present invention is selected from materials conventionally used in high quality printing paper. Generally it is based on natural wood pulp and if desired, a filler such as talc, calcium carbonate, T-.O2, BaSO 4 , and the like can be added. Generally the paper also contains internal sizing agents, such as alkyl ketene dimer, higher fatty acids, paraffin wax, alkenylsuccinic acid, such as epichlorhydrin fatty acid amid and the like. Further the paper may contain wet an dry strength agents such as a polyamine, a poly-amide, poly aery lamide, poly- epichlorohydrin or starch and the like.
  • Further additives in the paper can be fixing agents, such as aluminium sulphate, starch, cationic polymers and the like.
  • the Ra value for a normal grade base paper is well above 1.0 ⁇ m typically above 1.3 ⁇ m.
  • a base paper with a Ra value below 1.0 ⁇ m such a normal grade base paper can be coated with a pigment.
  • Any pigment can be used. Examples of pigments are calcium-carbonate, TiO2, BaSO 4 , clay, such as kaolin, styrene- acrylic copolymer, Mg-Al-silicate, and the like or combinations thereof.
  • the amount being between 0.5 and 35.0 g/m 2 more preferably between 0.5 and 20.0 g/m 2 .
  • This pigmented coating can be applied as a pigment slurry in water together with suitable binders like styrene- butadiene latex, methyl methacrylate-butadiene latex, polyvinyl alcohol, modified starch, polyacrylate latex or combinations thereof, by any technique known in the art, like dip coating, roll coating, blade coating or bar coating.
  • the pigment coated base paper may optionally be calendered.
  • the surface roughness can be influenced by the kind of pigment used and by a combination of pigment and calendering.
  • the base pigment coated paper substrate has preferably a surface roughness between 0.4 and 0.8 ⁇ m. If the surface roughness is further reduced by super calendaring to values below 0.4 ⁇ m the thickness and stiffness values will generally become below an acceptable level.
  • the ink receiving multilayer of the present invention can be directly applied to the pigment coated base paper.
  • the pigment coated base paper having a pigmented top side and a back-side is provided on both sides with a polymer resin through high temperature co-extrusion giving a laminated pigment coated base paper. Typically temperatures in this (co-) extrusion are above 280 0 C but below 350 0 C.
  • the preferred polymers used are poly olefins, particularly polyethylene.
  • the polymer resin of the top side comprises compounds such as an opacifying white pigment e.g. Ti ⁇ 2 (anatase or rutile), ZnO or ZnS, dyes, coloured pigments, including blueing agents, e.g.
  • the total weight of the laminated pigment coated base paper is preferably between 80 and 350 g/m 2 .
  • the laminated pigment coated base paper shows a very good smoothness, which after applying the ink receiving layer of the present invention results in a recording medium with excellent gloss.
  • Other supports used in this invention may suitably be selected from a synthetic paper or a plastic film in which the top and back coatings are balanced in order to minimise the curl behaviour.
  • the material of the plastic film are polyolefins such as polyethylene and polypropylene, vinyl copolymers such as polyvinyl acetate, polyvinyl chloride and polystyrene, polyamide such as 6,6-nylon and 6-nylon, polyesters such as polyethylene terephthalate, polyethylene-2 and 6- naphthalate and polycarbonate, and cellulose acetates such as cellulose triacetate and cellulose diacetate.
  • the support may have a gelatin subbing layer to improve coatability of the support.
  • a process for producing a recording medium of the present invention typically comprises the steps of: a. preparing at least one aqueous mixture for the underlayer; b. preparing at least one aqueous mixture of at least a water soluble polymer for the overlayer; c. in case a toplayer is applied, preparing an aqueous mixture for the top layer; d. adding one or more additives according to general Formula I as defined above, to at least one of the mixtures for the overlayer or the underlayer; and e.
  • the present inventors surmise that two mechanisms may be present when the recording media of the present invention are put to use.
  • the compounds of formula (I) described above interact with the positive charges that remain in the recording media after printing.
  • the molecules of the water soluble polymers and/or the gelatin is reduced and as a consequence faster swelling and thus faster ink absorption is obtained.
  • the second hypothetical mechanism the above-mentioned compounds create binding sites by interacting with the water soluble polymer which can be occupied by the colorants of the ink.
  • the recording medium of the invention can be used for forming a permanent, precise inkjet image by bringing ink into contact with the medium in the pattern of a desired image.
  • the present invention will be illustrated in more detail by the following non-limiting examples. Unless stated otherwise, all ratios given are based on weight. Examples
  • a 17 wt.% aqueous solution of a lime bone gelatin with an IEP of 5.0 and average MW of 250 kD (determined by the method described in the
  • C Preparation of the toplayer solution 'C of the ink receiving layer.
  • D Preparation of the overlaver solution 'D' of the ink receiving layer.
  • the solution was prepared in the same way as overlayer solution 'B' except that 27 weight parts of PVA-NVF co polymer and 946 parts of water were added.
  • underlayer, overlayer and toplayer solutions mentioned above were fed into a slide coating machine, commonly known in the photographic industry, and coated on a photographic grade paper having polyethylene laminated at both sides. After coating, the solution was chilled at a temperature of ca. 15 0 C to set the gelatin and then dried with dry air at a maximum temperature of 40 0 C.
  • Underlayer 1 57 cc/m 2 of underlayer solution 'A'
  • Overlayer 1 80 cc/m 2 of overlayer solution 'B'
  • Top layer 1 17 cc/m 2 of top layer solution 'C
  • Example 2 The samples were prepared as in Example 1, except that to the composition of the underlayer is added one of the compounds of table 1 in an amount of 1.8 mmol/m 2 .
  • Example 2 The samples were prepared as in Example 1, except that to the composition of the underlayer is added one of the compounds of table 2 in an amount of 1.8 mmol/m 2 .
  • Example 2 The samples were prepared as in Example 1, except that in stead of overlayer solution 'B' composition 'D' was used to make the recording media.
  • the compounds of table 3 are added to the underlayer.
  • the ink jet media prepared by the above mentioned formulation and coating process were printed with a standard image comprising black, cyan, magenta and yellow bars.
  • the image contained also two pictures; including a portrait picture and a composition picture.
  • the image was printed at a room conditions (23 0 C and 48% Relative Humidity RH) and the printed materials were kept at this condition for at least 1 hour to dry.
  • An EPSON 950 was used to print the images by using the following settings:
  • the quality of the printed images is analysed visually by analysing the beading behaviour as depicted in the table below.
  • Comparative example 1 has been taken as reference to judge the effects of the compounds on beading.

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

Abstract

La présente invention concerne un support d'impression, et plus particulièrement un support dilatable pour l'impression à jets d'encre. Le support de base est garni d'une couche encrable multicouche dont l'une au moins des couches constitutives comprend notamment un polymère hydrosoluble associé à un composé représenté par la formule générale (I). Dans cette formule (I), l'un au moins X1, X2 et X3 est C, le restant étant N, X1-X3 et les deux atomes N aux positions 1 et 3 formant un noyau cinq. R1 est C6 cyclique. R2 et R3 sont chacun indépendamment H, C1-C6 alkyle, hydroxyle, C1-C2 alcoxy, mercapto, C1-C6 alkylthio, amino, alkylamino, dialkylamino, halogène, sulfonyle, et carboxyle. En outre, R1 peut être omis si X2 est N. De même, R2 peut être omis si X3 est N, R3 pouvant être omis si X1 est N. Enfin, la combinaison entre R1 et R2 forme un noyau à 6 segments fusionné au noyau cinq, le noyau à 6 segments pouvant être hétérocyclique et éventuellement substitué, auquel cas chacune des liaisons peut être simple ou double. Ce support présente des propriétés améliorées, en particulier pour ce qui est du comportement au nervurage.
PCT/NL2005/000553 2004-07-30 2005-07-29 Support d'impression WO2006011797A1 (fr)

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EP04077195.8 2004-07-30
EP04077195 2004-07-30

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056911A2 (fr) 1981-01-22 1982-08-04 Baltimore Aircoil Company, Inc. Garniture à plaques ayant des rainures en zigzag pour tours de refroidissement d'eau
US4781985A (en) 1986-06-20 1988-11-01 James River Graphics, Inc. Ink jet transparency with improved ability to maintain edge acuity
US5084340A (en) 1990-12-03 1992-01-28 Eastman Kodak Company Transparent ink jet receiving elements
EP0955180A2 (fr) * 1998-05-05 1999-11-10 Hewlett-Packard Company Composition ayant une résistance améliorée contre la décoloration d'une image imprimée
WO2003054029A1 (fr) 2001-12-21 2003-07-03 Ciba Specialty Chemicals Holding Inc. Copolymeres de poly(vinyl alcool)-co-poly(n-vinyl formamide)
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EP1340621A2 (fr) 2002-02-28 2003-09-03 Ilford Imaging UK Limited Matériaux d'enregistrement
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WO2003054030A2 (fr) * 2001-12-21 2003-07-03 Ciba Specialty Chemicals Holding Inc. Polymeres poly(vinylalcool)-co-poly(vinylamine) comportant des fractions fonctionnelles
EP1340621A2 (fr) 2002-02-28 2003-09-03 Ilford Imaging UK Limited Matériaux d'enregistrement
WO2004050379A1 (fr) 2002-12-04 2004-06-17 Fuji Photo Film B.V. Support d'enregistrement a jet d'encre

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