Patents by Inventor Howard Doumaux
Howard Doumaux has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11401431Abstract: A thermal inkjet ink includes a water-based vehicle; a colorant; and a modified siloxane surfactant including a plurality of components. Each component has a chemical formula I: Si(1+x+z)O(1+x+z+y)C(1+1+2(x+z)+j+m+y(2+n))H(6+6+6(x+z)+o+p+y(4+q)). For each component: y ranges from 2 to 4; x and z each range from 0 to 14; x+z=from 0 to 14; j, m, and n are the number of carbon atoms, respectively, in R1, R2, and R3; o, p, and q are the number of hydrogen atoms, respectively, in R1, R2, and R3. R1 is selected from H, an alkyl, and an aryl. Each of R2 and R3 is selected from H, an alkyl, an alkyl substituted with an allylic or an epoxy group, an aryl, and an aryl substituted with an allylic or an epoxy group. For some components: x+z=from 7 to 14.Type: GrantFiled: October 25, 2017Date of Patent: August 2, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kai-Kong Iu, Howard Doumaux, Stone S. Ouyang
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Publication number: 20220089889Abstract: An example thermal inkjet dye sublimation ink consists of a disperse dye colorant dispersion, glycerol, 1,2-hexanediol, optionally a water soluble or water miscible organic solvent, optionally an additive, and a balance of water. The disperse dye colorant dispersion is present in an amount ranging from about 1 wt % actives to about 7 wt % actives based on a total weight of the ink. Glycerol is present in an amount ranging from about 5 wt % to about 30 wt % based on the total weight of the ink. 1,2-hexanediol is present in an amount ranging from about 2 wt % to about 25 wt %, and the optional water soluble or water miscible organic solvent present in an amount up to about 7 wt %, each based on the total weight of the ink. The optional additive is selected from the group consisting of a surfactant, a chelating agent, a buffer, a biocide, and combinations thereof.Type: ApplicationFiled: May 7, 2019Publication date: March 24, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Holly N. Keene, Howard Doumaux, Nicholas J. Stewart, David William Jenkins
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Patent number: 11235587Abstract: An example of an inkjet pre-treatment fluid for dye sublimation printing consists of a humectant; a cationic polymer; a surfactant; a co-solvent present in an amount up to about 50 wt % based on a total weight of the inkjet pre-treatment fluid; and a balance of water. In an example of a printing method, the inkjet pre-treatment fluid is inkjet printed onto a textile substrate to form a pre-treated area on the textile substrate.Type: GrantFiled: November 8, 2017Date of Patent: February 1, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Howard Doumaux, Ronald Albert Askeland, Raffaella Fior
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Patent number: 11065871Abstract: A printing method includes selecting a dye sublimation ink, having: a disperse dye colorant dispersion; a primary solvent selected from the group consisting of glycerol, ethoxylated glycerol, 2-methyl-1,3-propanediol, dipropylene glycol, and combinations thereof; a surfactant selected from the group consisting of nonionic surfactants, anionic surfactants, and combinations thereof; an additive selected from the group consisting of a buffer, a biocide, a chelating agent, and combinations thereof; and a balance of water. An operating energy that includes a margin over a turn-on energy (TOE) for a thermal inkjet printhead is applied to a heating resistor of the printhead, wherein the margin ranges from about 10% to about 25% over the TOE. The dye sublimation ink is printed from the thermal inkjet printhead i) directly onto a textile substrate, or ii) onto a transfer medium to form an image thereon; and the image is transferred onto the textile substrate.Type: GrantFiled: November 8, 2017Date of Patent: July 20, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Howard Doumaux, Steven M. Krause, Varna Jayne Lindqvist
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Patent number: 11066567Abstract: A thermal inkjet dye sublimation ink consists of a disperse dye colorant dispersion, primary and secondary solvents, a chelating agent, oleth-3-phosphate, additive(s), and water. The colorant dispersion is present in an amount ranging from about 1 wt % actives to about 7 wt % actives. The amount of the primary solvent (glycerol, ethoxylated glycerol, 2-methyl-1,3-propanediol, dipropylene glycol, or combinations thereof) ranges from about 10 wt % to about 22 wt %, and the amount of the secondary solvent ranges from 0 wt % to about 7 wt %. The chelating agent amount ranges from 0 wt % actives to less than 0.1 wt % actives, and the oleth-3-phosphate amount ranges from about 0.1 wt % to about 0.75 wt. The additive is selected from the group consisting of a buffer, a biocide, another surfactant, and combinations thereof.Type: GrantFiled: November 8, 2017Date of Patent: July 20, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Howard Doumaux, Nicholas J. Stewart
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Patent number: 11035075Abstract: A thermal inkjet dye sublimation ink consists of a disperse dye colorant dispersion, a co-solvent system, an additive, and a balance of water. The colorant dispersion is present in an amount ranging from about 1 wt % actives to about 7 wt % actives. The co-solvent system is present in a total amount ranging from about 12 wt % to about 25 wt %. The co-solvent system consists of glycerol present in an amount ranging from about 9 wt % to about 16 wt %, ethoxylated glycerol present in an amount ranging from 0 wt % to about 5 wt %, and a water soluble or water miscible organic solvent present in an amount ranging from 0 wt % to about 7 wt %. The additive is selected from the group consisting of a surfactant, a chelating agent, a buffer, a biocide, and combinations thereof.Type: GrantFiled: November 8, 2017Date of Patent: June 15, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Howard Doumaux, Nicholas J. Stewart
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Publication number: 20210071023Abstract: A thermal inkjet dye sublimation ink consists of a cyan disperse dye colorant dispersion, glycerol, a water soluble or water miscible organic solvent, a chelating agent, additive(s), and water. The colorant dispersion is present in an amount ranging from about 1 wt % actives to about 7 wt % actives. Glycerol is present in an amount ranging from about 10 wt % to about 22 wt %, and the water soluble or miscible organic solvent is present in an amount ranging from 0 wt % to about 7 wt %. The chelating agent is present in an amount greater than 0 wt % actives and less than 0.1 wt % actives. The additive is selected from the group consisting of a buffer, a biocide, a surfactant, and combinations thereof.Type: ApplicationFiled: November 8, 2017Publication date: March 11, 2021Inventors: Howard Doumaux, Nicholas J. Stewart
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Patent number: 10883008Abstract: The present disclosure refers to an inkjet ink set comprising a black ink with a black pigment, a yellow ink with a yellow pigment, a cyan ink with a cyan pigment, a magenta ink with a magenta pigment and a white ink with a white pigment. At least one of the ink further contains a latex binder that is dispersed in the ink vehicle, and that includes a first heteropolymer including two or more aliphatic (meth)acrylate ester monomers or two or more aliphatic (meth)acrylamide monomers; and a second heteropolymer including a cycloaliphatic monomer and an aromatic monomer. The present disclosure refers also to a printing method using the ink set and to a system for printing the ink set.Type: GrantFiled: January 5, 2018Date of Patent: January 5, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: David Michael Ingle, Phillip C. Cagle, Paul J. Bruinsma, Howard Doumaux, Timothy C. Mauldin
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Patent number: 10876012Abstract: Herein is described an inkjet printing system comprising: an aqueous pre-treatment fluid comprising a cationic polymer and a pre-treatment vehicle; an aqueous inkjet ink composition comprising a latex polymer comprising a (meth)acrylate or (meth)acrylamide polymer or copolymer, a pigment and an ink vehicle; and an aqueous inkjet overcoat composition comprising a latex polymer comprising a (meth)acrylate or (meth)acrylamide polymer or copolymer, a wax and an overcoat vehicle.Type: GrantFiled: January 31, 2017Date of Patent: December 29, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Phillip C. Cagle, David Michael Ingle, Howard Doumaux, Timothy Christopher Mauldin
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Patent number: 10850545Abstract: Herein is described an inkjet printer cartridge, comprising: a printhead having a flow path; a reservoir in fluid communication with the printhead flow path, the reservoir containing an inkjet ink composition; and a shipping fluid present in the printhead flow path, wherein the shipping fluid comprises: a fadable colorant; a carbohydrate; and a liquid vehicle. A method of performing a nozzle check for an inkjet printhead is also described.Type: GrantFiled: January 31, 2017Date of Patent: December 1, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Kai-Kong Iu, Howard Doumaux
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Publication number: 20200369899Abstract: A thermal inkjet dye sublimation ink consists of a disperse dye colorant dispersion, primary and secondary solvents, a chelating agent, oleth-3-phosphate, additive(s), and water. The colorant dispersion is present in an amount ranging from about 1 wt % actives to about 7 wt % actives. The amount of the primary solvent (glycerol, ethoxylated glycerol, 2-methyl-1,3-propanediol, dipropylene glycol, or combinations thereof) ranges from about 10 wt % to about 22 wt %, and the amount of the secondary solvent ranges from 0 wt % to about 7 wt %. The chelating agent amount ranges from 0 wt % actives to less than 0.1 wt % actives, and the oleth-3-phosphate amount ranges from about 0.1 wt % to about 0.75 wt. The additive is selected from the group consisting of a buffer, a biocide, another surfactant, and combinations thereof.Type: ApplicationFiled: November 8, 2017Publication date: November 26, 2020Inventors: Howard Doumaux, Nicholas J. Stewart
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Patent number: 10829659Abstract: Herein is described a method of inkijet printing, and compositions and inksets for use in the method, the method comprising: printing onto a non-porous substrate an inkjet fixing composition comprising a cationic polymer in an amount of less than 5 wt. %; an organic acid in an amount of 3 wt. % or less; and a liquid vehicle; and printing a latex-containing inkjet ink composition onto the non-porous substrate.Type: GrantFiled: January 31, 2017Date of Patent: November 10, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Howard Doumaux, Eduardo Amela Conesa, Andreas Muller, Kai-Kong Iu
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Publication number: 20200283952Abstract: A thermal inkjet dye sublimation ink consists of a disperse dye colorant dispersion, a co-solvent system, an additive, and a balance of water. The colorant dispersion is present in an amount ranging from about 1 wt % actives to about 7 wt % actives. The co-solvent system is present in a total amount ranging from about 12 wt % to about 25 wt %. The co-solvent system consists of glycerol present in an amount ranging from about 9 wt % to about 16 wt %, ethoxylated glycerol present in an amount ranging from 0 wt % to about 5 wt %, and a water soluble or water miscible organic solvent present in an amount ranging from 0 wt % to about 7 wt %. The additive is selected from the group consisting of a surfactant, a chelating agent, a buffer, a biocide, and combinations thereof.Type: ApplicationFiled: November 8, 2017Publication date: September 10, 2020Inventors: Howard Doumaux, Nicholas J. Stewart
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Publication number: 20200276813Abstract: A printing method includes selecting a dye sublimation ink, having: a disperse dye colorant dispersion; a primary solvent selected from the group consisting of glycerol, ethoxylated glycerol, 2-methyl-1,3-propanediol, dipropylene glycol, and combinations thereof; a surfactant selected from the group consisting of nonionic surfactants, anionic surfactants, and combinations thereof; an additive selected from the group consisting of a buffer, a biocide, a chelating agent, and combinations thereof; and a balance of water. An operating energy that includes a margin over a turn-on energy (TOE) for a thermal inkjet printhead is applied to a heating resistor of the printhead, wherein the margin ranges from about 10% to about 25% over the TOE. The dye sublimation ink is printed from the thermal inkjet printhead i) directly onto a textile substrate, or ii) onto a transfer medium to form an image thereon; and the image is transferred onto the textile substrate.Type: ApplicationFiled: November 8, 2017Publication date: September 3, 2020Inventors: Howard Doumaux, Steven M. Krause, Varna Jayne Lindqvist
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Patent number: 10738208Abstract: The present disclosure refers to an inkjet ink composition comprising an ink vehicle including water; a white metal oxide pigment dispersed in the ink vehicle; and a latex binder, dispersed in the ink vehicle. The latex binder includes a first heteropolymer including two or more aliphatic (meth)acrylate ester monomers or two or more aliphatic (meth)acrylamide monomers; and a second heteropolymer including a cycloaliphatic monomer and an aromatic monomer. The present disclosure refers also to a printing method using such inkjet ink composition.Type: GrantFiled: January 5, 2018Date of Patent: August 11, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: David Michael Ingle, Phillip C. Cagle, Paul J. Bruinsma, Howard Doumaux, Timothy C. Mauldin
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Publication number: 20200248021Abstract: A thermal inkjet ink includes a water-based vehicle; a colorant; and a modified siloxane surfactant including a plurality of components. Each component has a chemical formula I: Si(1+x+z)O(1+x+z+y)C(1+1+2(x+z)+j+m+y(2+n))H(6+6+6(x+z)+o+p+y(4+q)). For each component: y ranges from 2 to 4; x and z each range from 0 to 14; x+z=from 0 to 14; j, m, and n are the number of carbon atoms, respectively, in R1, R2, and R3; o, p, and q are the number of hydrogen atoms, respectively, in R1, R2, and R3. R1 is selected from H, an alkyl, and an aryl. Each of R2 and R3 is selected from H, an alkyl, an alkyl substituted with an allylic or an epoxy group, an aryl, and an aryl substituted with an allylic or an epoxy group. For some components: x+z=from 7 to 14.Type: ApplicationFiled: October 25, 2017Publication date: August 6, 2020Inventors: Kai-Kong Iu, Howard Doumaux, Stone S. Ouyang
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Publication number: 20200247165Abstract: Herein is described an inkjet printer cartridge, comprising: a printhead having a flow path; a reservoir in fluid communication with the printhead flow path, the reservoir containing an inkjet ink composition; and a shipping fluid present in the printhead flow path, wherein the shipping fluid comprises: a fadable colorant; a carbohydrate; and a liquid vehicle. A method of performing a nozzle check for an inkjet printhead is also described.Type: ApplicationFiled: January 31, 2017Publication date: August 6, 2020Inventors: Kai-Kong Iu, Howard Doumaux
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Patent number: 10723901Abstract: Herein is described an ink set for use in inkjet printing, comprising: a first cyan ink comprising from 1 wt % to 2.5 wt % of a cyan pigment, from 5 wt % to 15 wt % of a latex binder, and an ink vehicle; a second cyan ink comprising from 0.25 wt % to 0.64 wt % of a cyan pigment, from 5 wt % to 15 wt % of a latex binder, and an ink vehicle; a first magenta ink comprising from 2 wt % to 4 wt % of a magenta pigment, from 5 wt % to 15 wt % of a latex binder, and an ink vehicle; and a second magenta ink comprising from 0.4 wt % to 0.97 wt % of a magenta pigment, from 5 wt % to 15 wt % of a latex binder, and an ink vehicle, and methods of printing using the inkset.Type: GrantFiled: January 31, 2017Date of Patent: July 28, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Howard Doumaux, Eduardo Amela Conesa
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Publication number: 20200224051Abstract: An example of an inkjet pre-treatment fluid for dye sublimation printing consists of a humectant; a cationic polymer; a surfactant; a co-solvent present in an amount up to about 50 wt % based on a total weight of the inkjet pre-treatment fluid; and a balance of water. In an example of a printing method, the inkjet pre-treatment fluid is inkjet printed onto a textile substrate to form a pre-treated area on the textile substrate.Type: ApplicationFiled: November 8, 2017Publication date: July 16, 2020Inventors: Howard Doumaux, Ronald Albert Askeland, Raffaella Fior
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Patent number: 10696856Abstract: An ink composition is described herein. In one example, an ink includes at least one pigment, at least one dispersant, and at least one durable polymer in a water-based dispersion medium including at least one hydrophilic solvent. The dispersant is present at from about 0.05 wt % to about 15 wt % of the ink composition. Further, the ink composition includes at least one dispersion additive.Type: GrantFiled: January 22, 2014Date of Patent: June 30, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Howard Doumaux, Max Yen, Thomas W. Butler