Patents by Inventor Dennis Z. Guo
Dennis Z. Guo 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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Publication number: 20220135818Abstract: A white ink composition can include an aqueous ink vehicle including water and organic co-solvent, from 5 wt % to 30 wt % white metal oxide pigment, from 0.05 wt % to 1 wt % block copolymer dispersant adsorbed on a surface of the white metal oxide, and from 2 wt % to 30 wt % polyurethane binder. The block copolymer dispersant can have a weight average molecular weight from 5,000 Mw to 20,000 Mw and an acid number from 0 mg KOH/g to 40 mg KOH/g based on dry weight of the block copolymer dispersant.Type: ApplicationFiled: November 25, 2019Publication date: May 5, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Dennis Z. GUO, Jie ZHENG, Barbara Casanas MONTES, Marcos A. CABAN
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Patent number: 11279841Abstract: A fluid set can include an ink composition having a pH from pH 7 to pH 10 and a crosslinker composition having a basic pH from pH 8 to pH 10. The ink composition can include from 60 wt % to 90 wt % water, from 5 wt % to 30 wt % organic co-solvent, from 1 wt % to 6 wt % pigment, and a latex polymer including an aromatic (meth)acrylate moiety. The crosslinker composition can include from 70 wt % to 95 wt % water, from 1 wt % to 25 wt % organic co-solvent, and from 1 wt % to 10 wt % polycarbodiimide.Type: GrantFiled: April 16, 2018Date of Patent: March 22, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Dennis Z. Guo, Jie Zheng, David Michael Ingle, Ronald A. Askeland
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Publication number: 20220073768Abstract: An example of an inkjet ink for textile printing includes a white pigment, a pigment dispersant, a non-crosslinked polyurethane-based binder, an additive, and a liquid vehicle. The pigment dispersant is selected from the group consisting of a water-soluble acrylic acid polymer, a branched co-polymer of a comb-type structure with polyether pendant chains and acidic anchor groups attached to a backbone, and a combination thereof. The additive is selected from the group consisting of a styrene maleic anhydride copolymer, a styrene maleic anhydride ester, and a combination thereof.Type: ApplicationFiled: May 24, 2019Publication date: March 10, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Jie Zheng, Dennis Z. Guo
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Patent number: 11254832Abstract: A fluid set can include an ink composition having an acidic pH and a crosslinker composition having a basic pH from pH 8 to pH 10. The ink composition can include from 60 wt % to 90 wt % water, from 5 wt % to 30 wt % organic co-solvent, from 1 wt % to 6 wt % pigment, a sulfonated dispersant, and an acrylic polymer binder. The crosslinker composition can include from 70 wt % to 95 wt % water, from 1 wt % to 25 wt % organic co-solvent, and from 0.5 wt % to 5 wt % polycarbodiimide.Type: GrantFiled: January 17, 2018Date of Patent: February 22, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Dennis Z. Guo, Jie Zheng
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Publication number: 20220041883Abstract: A fluid set for textile printing includes a pre-treatment composition, a fixer composition, and a white ink composition. The pre-treatment composition includes a pre-treatment composition including a surfactant-free dispersion of siloxane polymer or C10 to C24 alkyl chain-modified polymer, a fixer composition including a cationic polymer and a fixer vehicle, and a white ink composition including a white pigment, a polymeric binder, and an ink vehicle.Type: ApplicationFiled: September 27, 2019Publication date: February 10, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Dennis Z. Guo, Jie ZHENG
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Publication number: 20210363695Abstract: The present disclosure includes a textile printing system including a fabric substrate and an ink composition. The ink composition can include water, organic co-solvent, from 0.5 wt % to 15 wt % pigment with a dispersant associated with a surface thereof, and from 0.1 wt % to 30 wt % of polyurethane particles including sulfonated- or carboxylated-diamine groups and isocyanate-generated amine groups.Type: ApplicationFiled: November 13, 2018Publication date: November 25, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Zhang-Lin Zhou, Qianhan Yang, Dennis Z. Guo
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Publication number: 20210354203Abstract: Examples of a three-dimensional (3D) printing kit include a particulate build material and a binder fluid. The particulate build material includes from about 80 wt % to 100 wt % metal particles based on a total weight of the particulate build material. In some examples, the binder fluid includes water, polymer particles in an amount ranging from about 1 wt % to about 40 wt % based on a total weight of the binder fluid, and a blocked polyisocyanate adhesion promoter in an amount ranging from about 0.05 wt % to about 5 wt % based on the total weight of the binder fluid. In some other examples, the binder fluid includes water and the polymer particles, and the 3D printing kit further includes an adhesion promoter fluid which includes water and the blocked polyisocyanate adhesion promoter.Type: ApplicationFiled: September 21, 2018Publication date: November 18, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Tienteh Chen, Dennis Z. Guo
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Publication number: 20210309879Abstract: A fluid set can include an ink composition and a fixer composition. The ink composition can include an ink vehicle, pigment, and from 2 wt % to 15 wt % polyurethane binder The fixer composition can include a fixer vehicle, from 1 wt % to 10 wt % quaternary amine-containing polymer, and from 0.5 wt % to 8 wt % blocked nonionic polyisocyanate crosslinking agent.Type: ApplicationFiled: December 17, 2018Publication date: October 7, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Dennis Z. GUO, Jie ZHENG
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Publication number: 20210309878Abstract: A fluid set includes an ink composition including an aqueous ink vehicle, pigment, and from 2 wt % to 15 wt % polyurethane binder. The fluid set also includes a fixer fluid composition including an aqueous fixer vehicle, and from 0.5 wt % to 12 wt % cationic polymer comprising an azetidinium-containing polyamine polymer and a second quaternary amine-containing polymer.Type: ApplicationFiled: February 1, 2019Publication date: October 7, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Dennis Z. GUO, Jie ZHENG
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Publication number: 20210310188Abstract: In an example of a textile printing method, a thermally curable ink composition is applied on a fabric substrate. The thermally curable ink composition includes from about 1 wt % active to about 6 wt % active of a pigment that absorbs ultraviolet radiation, infrared radiation, or a combination thereof, based on a total weight of the thermally curable ink composition; from about 2 wt % active to about 20 wt % active of a polymeric binder, based on the total weight of the thermally curable ink composition; and an aqueous ink vehicle. In the method, the pigment of the thermally curable ink composition is selectively heated on the fabric substrate by exposing the fabric substrate to an emission wavelength from a narrow wavelength light source for a total exposure time of 3 seconds or less. The selective heating thermally fixes the pigment to the fabric substrate.Type: ApplicationFiled: November 29, 2018Publication date: October 7, 2021Inventors: Ronald A. Askeland, Blair A. Butler, Jie Zheng, Dennis Z. Guo
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Publication number: 20210301168Abstract: A fluid set can include an ink composition including an ink vehicle, pigment, and from 2 wt % to 15 wt % acrylic latex binder. The fluid set can also include a fixer fluid including a fixer vehicle, and from 0.5 wt % to 12 wt % of a cationic fixing agent including an azetidinium-containing polyamine.Type: ApplicationFiled: December 14, 2018Publication date: September 30, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Jie ZHENG, Dennis Z. GUO
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Publication number: 20210246327Abstract: A fluid set includes a pre-treatment composition and an ink composition. The pre-treatment composition includes a multivalent metal salt, a cationic polymer, and an aqueous vehicle. The ink composition includes a pigment, a polyurethane-based binder, and an aqueous ink vehicle.Type: ApplicationFiled: August 30, 2018Publication date: August 12, 2021Inventors: Jie Zheng, Dennis Z. Guo
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Publication number: 20210246328Abstract: A fixer composition includes a polyamine; a phosphate ester surfactant; a co-solvent; and a balance of water. The polyamine is selected from the group consisting of an azetidinium-containing polyamine, an epoxide-containing polyamine, and combinations thereof. The co-solvent contains two hydroxyl groups and an aliphatic chain between the two hydroxyl groups, the aliphatic chain containing three carbon atoms. The fixer composition may be used in combination with an inkjet ink and may be included in a fluid set and/or a textile printing kit.Type: ApplicationFiled: June 13, 2019Publication date: August 12, 2021Inventors: Dennis Z. Guo, Jie Zheng
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Publication number: 20210238436Abstract: A fluid set includes a pre-treatment composition, an ink composition, and an overcoat composition. The pre-treatment composition includes a multivalent metal salt and an aqueous vehicle. The ink composition includes a pigment, a polyurethane-based binder, and an aqueous ink vehicle. An overcoat composition includes a blocked polyisocyanate crosslinker and an aqueous overcoat vehicle.Type: ApplicationFiled: August 30, 2018Publication date: August 5, 2021Inventors: Dennis Z. Guo, Jie Zheng
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Publication number: 20210238799Abstract: A method of internal recirculation printing can include introducing an ink composition into a firing chamber, the ink composition comprising water, organic co-solvent, pigment, and from 2 wt % to 20 wt % of a dispersed polymer binder with an acid number from 0 mg KOH/g to 45 mg KOH/g, a weight average molecular weight of 40,000 Mw to 2,000,000 Mw, and a particle size from 40 nm to 2 ?m. The method can further include internally recirculating ink composition from the firing chamber, through micro-recirculation fluidics, and back into the firing chamber to be again recirculated or ejected from the firing chamber, as well as ejecting ink composition from the firing chamber through a jetting nozzle onto a substrate.Type: ApplicationFiled: August 30, 2018Publication date: August 5, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: John L. Stoffel, Dennis Z. GUO, Blair A. BUTLER
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Publication number: 20210198506Abstract: An example of an inkjet ink for textile printing includes a polycarbodiimide, a pigment, a sulfonated polyester-polyurethane binder, and a liquid vehicle. Examples of the inkjet ink may be used in textile printing kits and printing methods with a textile fabric. Examples of the textile fabric may be selected from the group consisting of cotton, polyester, nylon, and silk.Type: ApplicationFiled: December 21, 2018Publication date: July 1, 2021Inventors: Dennis Z. Guo, Jie Zheng
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Publication number: 20210163774Abstract: A fluid set can include an ink composition including an ink vehicle, pigment, and from 2 wt % to 15 wt % polyurethane binder. The fluid set can also include a fixer fluid including a fixer vehicle, and from 0.5 wt % to 12 wt % of a cationic fixing agent including an azetidinium-containing polyamine.Type: ApplicationFiled: January 9, 2019Publication date: June 3, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Dennis Z. Guo, Jie ZHENG
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Publication number: 20210164158Abstract: The present disclosure includes methods of printing on textiles. The method can include jetting an ink composition onto a fabric substrate. The ink composition can include water, organic co-solvent, pigment, and from 2 wt % to 15 wt % of a sulfonated polyester-polyurethane binder. The method can also include heating the fabric substrate having the ink composition printed thereon to a temperature from 120° C. to 200° C. for a period of 30 seconds to 5 minutes.Type: ApplicationFiled: April 16, 2018Publication date: June 3, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Jie ZHENG, Dennis Z. GUO
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Publication number: 20210130636Abstract: A fluid set can include a fixer fluid including a fixer vehicle and from 0.5 wt % to 12 wt % of a cationic fixing agent comprising an azetidinium-containing polyamine, a cyan ink composition including a cyan pigment, a magenta ink composition including a magenta pigment, and a yellow ink composition including a yellow pigment. The cyan ink composition, the magenta ink composition, and the yellow ink composition independently include an ink vehicle and from 2 wt % to 15 wt % crosslinkable polymeric binder, and at 10 ?m thick, the cyan ink composition, the magenta ink composition, and the yellow ink composition independently exhibit from 40% to 100% energy absorbed when exposed to a common narrow band of UV energy having a peak emission from 310 nm to 440 nm.Type: ApplicationFiled: June 12, 2019Publication date: May 6, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Ronald Albert ASKELAND, Jie ZHENG, Dennis Z. GUO
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Publication number: 20210095147Abstract: A cyan pigment dispersion includes a non-self-dispersed cyan pigment, a first dispersant, a second dispersant, and a balance of water. The first dispersant is a styrene-acrylic copolymer having an acid number ranging from about 120 mg KOH/g to about 220 mg KOH/g. The second dispersant has an acid number less than 100 mg KOH/g.Type: ApplicationFiled: June 11, 2018Publication date: April 1, 2021Inventors: Jie Zheng, Dennis Z. Guo