Abstract: A method for printing input digital images using an inkjet printing system having a first and second drop ejector arrays for ejecting drops of a particular ink, wherein ink paths supplying drop ejector arrays have different length projections. The method comprising printing a first combined number of ink dots using the first and second drop ejector arrays during first and third time intervals where the printhead is accelerating and decelerating; and printing a second combined number of ink dots using the first and second drop ejector arrays during a second time interval where the printhead is moving at a substantially constant velocity, wherein the percentage of ink dots that are printed by the drop ejector array having a longer length projection is less than 40% of the corresponding combined number of ink dots in at least one of the first or third time intervals.

Abstract: A method for printing input digital images using an inkjet printing system having a first and second drop ejector arrays for ejecting drops of a particular ink, wherein ink paths supplying drop ejector arrays have different length projections. The method comprising printing a first combined number of ink dots using the first and second drop ejector arrays during first and third time intervals where the printhead is accelerating and decelerating; and printing a second combined number of ink dots using the first and second drop ejector arrays during a second time interval where the printhead is moving at a substantially constant velocity, wherein the percentage of ink dots that are printed by the drop ejector array having a longer length projection is less than 40% of the corresponding combined number of ink dots in at least one of the first or third time intervals.

Abstract: An ink jet ink composition comprising water, a humectant, and composite colorant polymer particles, wherein the composite colorant polymer particles having a colorant phase and a polymer phase, the polymer phase of the particles being formed in situ in the presence of the colorant, the composite colorant polymer particles not increasing in mean particle size more than about 50% when said ink is incubated for one week at 60° C.

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-receiving element having a support having thereon a continuous, coextensive, non-porous, swellable, ink-receiving layer of a hydrophilic polymer which is capable of absorbing and retaining an ink; C) loading the printer with an ink jet ink composition of water, a humectant, a pigment and particles of a water-dispersible or water-soluble polymer; and finally D) printing on the ink-receiving layer using the ink jet ink in response to the digital data signals.

Abstract: Composite colorant polymer particles having a colorant phase and a polymer phase, said polymer phase of said particles being formed in the presence of said colorant in situ using an emulsion polymerization process wherein a portion of an addition polymerization initiator consisting essentially of an initiator dissolved in a solvent is added to an aqueous colorant mixture before adding a monomer mixture to the colorant mixture in a continuous process, the dispersion of composite colorant polymer particles being stable as defined by said particles not flocculating for up to 20 minutes when a dispersion containing said particles is added to acetone at a 1% by weight concentration; wherein the colorant mixture consists essentially of a colorant, a dispersant or surfactant and water.

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 an ink jet recording element comprising a support having thereon an image-receiving layer; C) loading said printer with an ink jet ink composition comprising water, a humectant, and composite colorant polymer particles, wherein said composite colorant polymer particles have a pigment phase and a polymer phase, said polymer phase of said particles being formed in situ, wherein a portion of an addition polymerization initiator is added to an aqueous colorant mixture before adding a monomer mixture to the colorant mixture in a continuous process, said composite colorant polymer particles not increasing in mean particle size more than about 18% when said ink is incubated for one week at 60° C.; and D) printing on said image-receiving layer using said ink jet ink composition in response to said digital data signals.

Abstract: An ink jet ink composition comprising water, a humectant, and composite colorant polymer particles, wherein the composite colorant polymer particles having a colorant phase and a polymer phase, the polymer phase of the particles being formed in situ in the presence of the colorant, the composite colorant polymer particles not increasing in mean particle size more than about 50% when said ink is incubated for one week at 60° C.

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, 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.

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-receiving element having a support having thereon a continuous, coextensive, porous ink-receiving layer having interconnecting voids; C) loading the printer with an ink jet ink composition of water, a humectant, a pigment and particles of a water-dispersible polymer; and D) printing on the ink-receiving layer using the ink jet ink in response to the digital data signals.

Abstract: An ink jet ink composition comprising water, a humectant, a polyvalent transition metal complex of an 8-heterocyclylazo-5-hydroxy-quinoline and an anti-kogation material comprising an alkali metal salt of a monobasic organic or inorganic acid. Examples of anti-kogation materials useful in the invention include sodium hexanoate, sodium sulfate, sodium propionate, sodium benzoate, sodium p-toluenesulfonate, sodium acetate, sodium bromide, sodium nitrate, potassium nitrate, lithium nitrate, lithium acetate, tetramethylammonium acetate and tetrabutylammonium bromide.

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 an image-receiving layer; C) loading the printer with an ink jet ink composition comprising water, a humectant, a polyvalent transition metal complex of an 8-heterocyclylazo-5-hydroxy-quinoline and an anti-kogation material comprising an alkali metal salt of a monobasic organic or inorganic acid; and D) printing on the image-receiving layer using the ink jet ink composition in response to the digital data signals. Examples of anti-kogation materials useful in the invention include sodium hexanoate, sodium sulfate, sodium propionate, sodium benzoate, sodium p-toluenesulfonate, sodium acetate, sodium bromide, sodium nitrate, potassium nitrate, lithium nitrate, lithium acetate, tetramethylammonium acetate and tetrabutylammonium bromide.

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-receiving element having a support having thereon a continuous, coextensive, non-porous, swellable, ink-receiving layer of a hydrophilic polymer which is capable of absorbing and retaining an ink; C) loading the printer with an ink jet ink composition of water, a humectant, a pigment and particles of a water-dispersible polymer; and D) printing on the ink-receiving layer using the ink jet ink in response to the digital data signals.

Abstract: An ink jet ink composition comprising water, a humectant, and composite colorant polymer particles, wherein the composite colorant polymer particles having a colorant phase and a polymer phase, the polymer phase of the particles being formed in situ in the presence of the colorant, the composite colorant polymer particles not increasing in mean particle size more than about 50% when said ink is incubated for one week at 60° C.

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 containing a support having thereon a porous ink-receptive layer; C) loading the printer with an ink jet ink composition of a water-dispersible polymeric latex and a water-soluble dye; and D) printing on an ink-receptive substrate using the ink jet ink in response to the digital data signals.

Abstract: Composite colorant polymer particles having a colorant phase and a polymer phase, the polymer phase of the particles being formed in the presence of the colorant in situ using an emulsion polymerization process, the dispersion of composite colorant polymer particles being stable as defined by said particles not flocculating for up to 20 minutes when a dispersion containing said particles is added to acetone at a 1% by weight concentration.

Abstract: An inkjet printing method, comprising the steps of:

Abstract: An ink jet ink composition comprising water, a humectant, a polyvalent transition metal complex of an 8-heterocyclylazo-5-hydroxy-quinoline and an anti-kogation material comprising an alkali metal salt of a monobasic organic or inorganic acid. Examples of anti-kogation materials useful in the invention include sodium hexanoate, sodium sulfate, sodium propionate, sodium benzoate, sodium p-toluenesulfonate, sodium acetate, sodium bromide, sodium nitrate, potassium nitrate, lithium nitrate, lithium acetate, tetramethylammonium acetate and tetrabutylammonium bromide.

Abstract: An ink jet printing method, comprising the steps of:

Abstract: An ink jet printing method, comprising the steps of: