Abstract: An aqueous coating composition is disclosed. The composition comprises fine organic particles, polyvinyl alcohol, and boric acids or salts thereof and comprising substantially no gelatin, and the same having a viscosity of 10 to 100 cp at 40° C., and a viscosity at 15° C., which is at least 20 times as much as that at 40° C. A coating method of the composition and an ink-jet sheet prepared by employing the composition are also disclosed.

Abstract: A recording material having sufficient height and equivalent dimensions of mats formed thereon and a matting process capable of forming these improved mats. A matting process including the step of forming mats on the recording face laminated on the substrate of a recording media with a screen by screen printing and a recording material having the thus formed mats formed on the recording face thereof.

Abstract: An ink jet recording element having a support having thereon the following layers in order: a) a base layer of a polymeric binder, a polymeric mordant and a stabilizer having the following formula: and b) an overcoat layer of a polymeric UV-absorbing material.

Abstract: A stable silica sol having an SiO2 concentration of 1 to 50% by weight and containing liquid-medium dispersed moniliform colloidal silica particles each having 3 or more as a ratio of D1/D2 of a particle diameter (D1 nm) measured by a dynamic light scattering method to a mean particle diameter (a particle diameter measured by a nitrogen absorption method: D2 nm) where D1 is 50 to 500 nm, and which are comprised by spherical colloidal silica particles having a mean particle diameter of 10 to 80 nm and metal oxide-containing silica bonding these spherical-colloidal silica particles, and in which the spherical colloidal silica particles link in rows in only one plane, process for producing such and a coating composition for ink receiving layers containing such a silica sol and an ink jet recording medium.

Abstract: The present invention provides a high gloss ink jet receiving medium with fast ink dry time, good dye fade resistance, good dimensional stability, and good durability. The coating comprises a polypeptide such as gelatin or modified gelatin. One of the following two types of plasticizers is also incorporated into the coating to reduce the curl of the coated sheets at low humidity: a) 2-Pyrrolidone and its derivatives such as hydroxyethyl pyrrolidone and N-cyclohexyl-2-pyrrolidone, and b) urea and its derivatives such as imidazolidinyl urea, diazolidinyl urea, 2-hydroxyethylethylene urea, and ethylene urea. A polyurethane dispersion is incorporated into the coating to increase the flexibility of the coating at low humidity and to reduce the tack of the coating at high humidity. The polymers can be crosslinked with one or a combination of crosslinkers such as trivalent metal ions, polyfunctional aziridine, and polyamide-epichlorohydrin resin.

Abstract: An ink jet printing method having the steps of: A) providing an ink jet printer that is responsive to digital data signals; B) loading the printer with an ink jet recording element having a support having thereon the following layers in order: i) a base layer having a polymeric binder and a polymeric mordant; and ii) an overcoat layer having a polymeric UV-absorbing material; C) loading the printer with an ink jet ink composition of water, a humectant, and a water-soluble dye; and D) printing on the overcoat layer using the ink jet ink in response to the digital data signals.

Abstract: A process for producing a silica-alumina composite sol, which comprises mixing a silica hydrogel and an aluminum salt which, when dissolved in water, gives an acidic solution.

Abstract: A process for making an article with an image protected by a clear fluoropolymer film includes coating the inner surface of the fluoropolymer film with a layer of hydrophobic, ink receptive polymer composition compatible with the fluoropolymer film. An image is printed on the layer of hydrophobic, ink receptive polymer composition using an inkjet printhead supplied with a non-aqueous solvent based ink. The clear, printed fluoropolymer film is then adhered to a substrate with the inner surface facing the substrate whereby the image is viewable through and protected by the fluoropolymer film.

Abstract: In a recording medium for a printer having a dye fixation layer mainly composed of an interlayer compound for receiving and holding a water-soluble dye by an intercalation reaction, and a binder, the ink is to be improved in ink absorption, fixation, water-proofness and bleeding characteristics to enable image formation to a high resolution. A dye fixation layer 3, mainly composed of an interlayer compound for fixing and holding the water-soluble dye by the intercalation reaction derived from the ion exchange action and the binder is formed as an outermost layer on a substrate 2. The binder of the dye fixation layer 3 contains the urethanated polyvinyl alcohol resin having an urethanation ratio of 1 to 20 mol %.

Abstract: An ink jet recording element having a substrate having thereon: a) a subbing layer of a polymeric binder and a borate or a borate derivative, the borate or borate derivative being present in an amount of from about 3 to about 50 g/m2, and the weight ratio of the polymeric binder to the borate or borate derivative is from about 0.2:1 to about 2:1, and b) an image-receiving layer having particles and a cross-linkable polymer containing hydroxyl groups, the cross-linkable polymer being present in an amount of from about 20 to about 150 g/m2, and the weight ratio of the cross-linkable polymer to the particles is from about 10:90 to about 30:70.

Abstract: An ink jet printing method having the steps of: A) providing an ink jet printer that is responsive to digital data signals, B) loading the printer with an ink jet recording element of a substrate having thereon: a) a subbing layer having a polymeric binder and a borate or a borate derivative, the borate or borate derivative being present in an amount of from about 3 to about 50 g/m2, and the weight ratio of the polymeric binder to the borate or borate derivative is from about 0.2:1 to about 2:1, and b) an image-receiving layer having particles and a cross-linkable polymer containing hydroxyl groups, the cross-linkable polymer being present in an amount of from about 20 to about 150 g/m2, and the weight ratio of the cross-linkable polymer to the particles is from about 10:90 to about 30:70; C) loading the printer with an ink jet ink composition; and D) printing on the ink jet recording element using the ink jet ink composition in response to the digital data signals.

Abstract: An ink jet printing method, comprising the steps of: A) providing an ink jet printer that is responsive to digital data signals; B) loading the printer with ink-receptive elements comprising a support having thereon an image-receiving layer comprising a cationic core/shell particle comprising a core and a shell containing at least one ethylenically unsaturated monomer containing a trialkylammonium salt; C) loading the printer with an ink jet ink composition comprising water, a humectant, and a water-soluble anionic dye; and D) printing on the image-receiving layer using the ink jet ink in response to the digital data signals.

Abstract: An ink jet recording sheet having a high water resistance and capable of recording thereon clear ink images includes a substrate polymeric film or sheet; an undercoat layer formed on the substrate and including a polymeric binder having a glass transition temperature of 50° C. or less and optionally pigment particles having an oil absorption of 250 ml/100 g or less and/or an aspect ratio of 2.0 to 100.0; and an ink receiving layer including a pigment and a polymeric binder.

Abstract: An ink jet recording method using a recording device including a recording head provided with an ejection outlet for ejecting ink and heating means for heating at least a part of a recording material; the method includes a recording step of recording by ejecting ink to a predetermined region on a recording material, using a recording head; a heating step of heating said region by heating means; and wherein the ink has an ink absorption coefficient Ka (ml.m−2.msec−½) relative to a plain paper, defined by Bristow method, is 1.0-5.0 and satisfies 0<ts≦200 msec where ts is a rapid expansion start point.

Abstract: An ink jet printing method having the steps of: A) providing an ink jet printer that is responsive to digital data signals; B) loading the printer with an ink jet recording element having a support having thereon the following layers in order: i) a base layer of a polymeric binder, a polymeric mordant and a stabilizer having the following formula: and ii) an overcoat layer of a trisaryl-1,3,5-triazine ultraviolet light absorbing material; C) loading the printer with an ink jet ink composition of water, a humectant, and a water-soluble dye; and D) printing on the overcoat layer using the ink jet ink in response to the digital data signals.

Abstract: An ink jet recording element having a support having thereon the following layers in order: i) a base layer of a polymeric binder, a polymeric mordant and a stabilizer having the following formula: and ii) an overcoat layer of a trisaryl-1,3,5-triazine ultraviolet light absorbing material.

Abstract: The present invention describes an ink jet printing sheet comprised of a supporting substrate surface treated with a water soluble or water dispersible polyester composition, said polyester having polyoxyalklylene moieties in an effective amount to reduce ink feathering. The instant invention is also directed to papers and transparencies coated with surface treated with a water soluble or water dispersible sulfonated polyester composition, said polyester having polyoxyalkylene moieties in an effective amount to reduce ink feathering. A typical polyester resin useful in the present invention is the reaction product of 20-50% by weight of terephthalate polymer, 10-60% by weight of at least one glycol and 5-70% by weight of at least one oxyalkylated polyol.

Abstract: A sheet material for advertisement having high water resistance and durability for practice and optionally high flameproof property and mildewproof property and capable of recording thereon ink images having a high clarity under transmitted light by ink jet printing, has an ink receiving layer which is formed on a sheet substrate comprising a base fiber fabric and a synthetic resin-containing coating layer, which optionally has a flameproof and/or mildewproof property, and which comprises hydrated silica particles (having an average primary particle size of 20 to 35 nm an average secondary particle size of 2 to 7 &mgr;m and a BET specific surface area of 50 to 170 m2/g, a water-holding material, for example, three dimensionally cross-linked isocyanate-polyalkyleneoxide and isocyanate-N-vinyl acetamide copolymers and/or copolymers or reaction products of ethyleneoxide (65% by weight or more) with a modifying organic compound, an acrylic resin binder, and optionally a phosphate ester compound flame retarder and

Abstract: Disclosed is a recording sheet which comprises a substrate and an image-receiving coating situated on at least one surface of the substrate, said image-receiving coating being suitable for receiving images of an aqueous ink, said image-receiving coating comprising a lightfastness agent which is a polysiloxane having thereon a hydrophilic moiety and a lightfastness moiety.

Abstract: The invention provides an ink-jet recording sheet having an excellent preventive effect on overall. degradation by light such as degradation of image clarity, and decrease in density or change of tone of images, and a resin composition for ink-jet recording media used in the formation thereof. The recording sheet of the invention comprises a substrate and as an ink-receiving layer provided on the substrate, a layer containing an acrylic resin comprising, as copolymerizable monomers, (a) a dialkylaminoalkyl methacrylate, (b) acrylamide and (c) at least one monomer selected from among an. alkoxypolyethylene glycol methacrylate, a 2-hydroxyalkyl methacrylate and a 2-hydroxyalkyl acrylate.