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 said printer with ink-receptive elements comprising a support having thereon a porous ink-receptive layer; C) loading said printer with an ink jet ink composition comprising water, a humectant, and a water-dispersible polymeric latex having contained therein a delocalized cationic azo dye derived from the quaternization of a nitrogen heterocyclic azo dye having the following formula:  and D) printing on an ink-receptive substrate using said ink jet ink in response to said 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: An ink jet ink composition comprising from about 0.5% to about 30% by weight of a pigment, a carrier and a dispersant, the dispersant comprising an anionic derivative of an ethoxylated alkylphenol-formaldehyde resin, the ratio of dispersant:pigment being from about 0.1:1 to about 5:1.

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, a polymeric mordant and a stabilizer, 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: An optical recording material which when exposed to actinic radiation produces a change in optical properties in the exposed regions, thereby providing a pattern of intelligence for storing and retrieving information, the recording material comprising: a) a binder; b) a reactant which is capable of undergoing a chemical transformation upon a one electron oxidation, thus causing the change in optical properties in the exposed regions; and c) a sensitizer capable of absorbing actinic radiation to cause an initial one electron oxidation of the reactant.

Abstract: An ink jet recording element comprising a support having thereon in order: a) a hydrophilic, fluid-absorbing layer, and b) an image-receptive layer capable of retaining an ink jet image, the image-receiving layer comprising an open-pore membrane of a mixture of a water-insoluble polymer and a water-absorbent polymer, the mixture containing at least about 25% by weight of the water-absorbent polymer.

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 an inkjet recording element comprising a support having thereon a porous image-receiving layer comprising particles in a binder, the particles having a primary particle size of from about 7 to about 40 nm in diameter which may be aggregated up to about 300 nm, the image-receiving layer being coated from an acidic aqueous dispersion, and the recording element containing a subbing layer between the support and the porous image-receiving layer, the subbing layer comprising a basic material which is capable of raising the surface pH of the image-receiving layer at least about 2 pH units; C) loading the printer with an ink jet ink composition; and D) printing on the image-receiving layer using the ink jet ink composition in response to the digital data signals.

Abstract: An ink jet printing process for improving the durability of an ink jet image comprising: a) providing an ink jet recording element comprising a support having thereon an image-receiving layer containing an ink jet image; and b) applying over the surface of the image-receiving layer an overcoat layer of a water-dispersible, hydrophobic polyester resin having the following general formula: In-P-Am wherein I is an ionic group; n is an integer from 1-3; P is a polyester backbone; A is an aliphatic group comprising a straight or branched chain fatty acid or triglyceride thereof having from about 6 to about 24 carbon atoms; and m is an integer from 3-8.

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 ink-receptive elements having a support having thereon a continuous, coextensive porous ink-receptive layer, C) loading the printer with an ink jet ink composition comprising an aqueous-dispersible polyester having contained therein a water-insoluble dye, and D) printing on the ink-receptive element using the ink jet ink 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 an inkjet recording element comprising a support having thereon an image-receiving layer comprising porous polymeric particles in a polymeric binder, the porous polymeric particles having the formula: wherein: A represents units of an addition polymerizable monomer containing at least two ethylenically unsaturated groups; B represents units of a copolymerizable, &agr;, &bgr;-ethylenically unsaturated monomer; C represents styrenic or acrylic repeating units containing an ionic functionality; x is from about 27 to about 99 mole %; y is from 0 to about 72 mole %; and z is from about 1 to about 73 mole %; C) loading the printer with an ink jet ink composition; and D) printing on the image-receiving layer 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 graft copolymer comprising a backbone copolymer and at least one branch copolymer, the backbone polymer comprising structural units capable of being oxidized by a transition metal catalyst and the branch copolymer comprising cationic units and neutral hydrophilic units; 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 printing method, comprising 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 comprising a support having thereon a porous image-receiving layer comprising particles and a poly(vinyl alcohol) binder, the particles comprising a fumed metallic oxide, and the binder having an average viscosity greater than about 25 cp at 4% solids in an aqueous solution at 20° C.; C) loading the printer with an ink jet ink composition; and D) printing on the image-receiving layer using the ink jet ink composition in response to the digital data signals.

Abstract: An ink jet printing process for improving the ozone stability an ink jet image comprising: a) providing an ink jet recording element comprising a support having thereon a porous image-receiving layer having interconnecting voids; and b) applying droplets of a liquid ink on the image-receiving layer in an image-wise manner, the ink comprising water, humectant and a metallized, phthalocyanine dye, the metallized, phthalocyanine dye comprising the formula: MPc(SO3X)a(SO2NRR′)b.

Abstract: An ink jet recording element comprising a support having thereon in order: I) a porous base layer comprising particles having a primary particle size of from about 7 to about 40 nm in diameter which may be aggregated up to about 300 nm and which are dispersed in a binder, and II) a porous image-receiving layer comprising: (a) particles having a primary particle size of from about 7 to about 40 nm in diameter which may be aggregated up to about 300 nm; and (b) water insoluble, cationic, polymeric particles comprising at least about 20 mole percent of a cationic mordant moiety; the thickness of layer I) being between about 35 and about 50 &mgr;m and the thickness of layer II) being between about 2 and about 6 &mgr;m.

Abstract: A method for removing contaminants from an ink jet print head having a nozzle plate with a plurality of nozzles, having the steps of: a) applying a heat-activatable adhesive material over the surface of the nozzle plate having contaminants on the surface thereof; b) applying heat to the heat-activatable to the adhesive material to cause it to flow over the surface of the nozzle plate having contaminants on the surface thereof, thereby causing the contaminants to adhere to the heat-activatable adhesive material; and c) removing the heat-activatable adhesive material having the contaminants adhered thereto.

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 an ink jet recording element comprising a support having thereon a porous image-receiving layer comprising: (a) particles having a primary particle size of from about 7 to about 40 nm in diameter which may be aggregated up to about 300 nm; and (b) water insoluble, cationic, polymeric particles comprising at least about 20 mole percent of a cationic mordant moiety; C) loading the printer with an ink jet ink composition; and D) printing on the image-receiving layer using the ink jet ink composition in response to the digital data signals.

Abstract: An ink jet recording element comprising a resin-coated paper support having thereon an ink-retaining layer comprising voided cellulosic fibers and organic or inorganic particles in a polymeric binder, the length of the voided cellulosic fibers being from about 10 &mgr;m to about 50 &mgr;m, the ratio of the voided cellulosic fibers to the organic or inorganic particles being from about 90:10 to about 60:40 and the ratio of the combination of voided cellulosic fibers and the organic or inorganic particles to the polymeric binder being from about 90:10 to about 50:50.

Abstract: An ink jet recording element comprising a support having thereon an image-receiving layer comprising porous polymeric particles in a polymeric binder, the porous polymeric particles having the formula: &Parenopenst;A&Parenclosest;x&Parenopenst;B&Parenclosest;y&Parenopenst;C&Parenclosest;z wherein: A represents units of an addition polymerizable monomer containing at least two ethylenically unsaturated groups; B represents units of a copolymerizable, &agr;, &bgr;-ethylenically unsaturated monomer; C represents styrenic or acrylic repeating units containing an ionic functionality; x is from about 27 to about 99 mole %; y is from 0 to about 72 mole %; and z is from about 1 to about 73 mole %

Abstract: An ink jet recording element comprising a resin-coated paper support having thereon an ink-retaining layer comprising voided cellulosic fibers in a polymeric binder, the ratio of the voided cellulosic fibers to the polymeric binder being from about 90:10 to about 50:50, the length of the voided cellulosic fibers being from about 10 &mgr;m to about 50 &mgr;m.

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 jet recording elements; C) loading the printer with an ink jet ink composition comprising from about 0.5% to about 30% by weight of a pigment, a carrier and a dispersant, the dispersant comprising an anionic derivative of an ethoxylated alkylphenol-formaldehyde resin, the ratio of dispersant:pigment being from about 0.1:1 to about 5:1; and D) printing on the ink jet recording element using the ink jet ink in response to the digital data signals.