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).

  • Publication number: 20210198506
    Abstract: 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: Application
    Filed: December 21, 2018
    Publication date: July 1, 2021
    Inventors: Dennis Z. Guo, Jie Zheng
  • Publication number: 20210163774
    Abstract: 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: Application
    Filed: January 9, 2019
    Publication date: June 3, 2021
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis Z. Guo, Jie ZHENG
  • Publication number: 20210164158
    Abstract: 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: Application
    Filed: April 16, 2018
    Publication date: June 3, 2021
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Jie ZHENG, Dennis Z. GUO
  • Publication number: 20210130636
    Abstract: 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: Application
    Filed: June 12, 2019
    Publication date: May 6, 2021
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Ronald Albert ASKELAND, Jie ZHENG, Dennis Z. GUO
  • Publication number: 20210095147
    Abstract: 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: Application
    Filed: June 11, 2018
    Publication date: April 1, 2021
    Inventors: Jie Zheng, Dennis Z. Guo
  • Publication number: 20210070082
    Abstract: An inkjet pre-treatment fluid for textile printing includes a fixing agent including a multivalent metal cation; and a blocked polyisocyanate selected from the group consisting of a non-ionic blocked polyisocyanate, a cationic blocked polyisocyanate, and an anionic blocked polyisocyanate having an acid number less than 5 mg KOH/g. The inkjet pre-treatment fluid further includes a liquid vehicle.
    Type: Application
    Filed: June 28, 2018
    Publication date: March 11, 2021
    Inventors: Dennis Z. Guo, Jie Zheng
  • Publication number: 20210032487
    Abstract: An example of an inkjet ink for textile printing includes a self-dispersed pigment. The self-dispersed pigment includes a pigment and an organic group attached thereto, the organic group including at least one phosphorus-containing group. The inkjet ink also includes a poly-ester-polyurethane binder and a liquid vehicle. The inkjet ink may be used in a printing method and/or in a textile printing kit.
    Type: Application
    Filed: June 14, 2018
    Publication date: February 4, 2021
    Inventors: Dennis Z. Guo, Jie Zheng
  • Patent number: 10907060
    Abstract: In an example of a method for printing on a textile, a print is generated by thermal inkjet printing a thermal inkjet ink on a cotton fabric. The thermal inkjet ink consists of a pigment, a single dispersant and binder resin, a vehicle, and a balance of water. The single dispersant and binder resin is a styrene acrylic resin having an acid number greater than 100 mg KOH/g and a weight average molecular weight less than 50,000. The vehicle includes a co-solvent, an anti-kogation agent, a humectant, a surfactant, a biocide, or combinations thereof. The print is generated without a post-printing curing process.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: February 2, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis Z. Guo, Jie Zheng
  • Publication number: 20200385596
    Abstract: A method of textile printing can include ejecting an ink composition onto a fabric substrate and ejecting a blocked polyisocyanate crosslinker onto the fabric substrate. 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 from 2 wt % to 10 wt % dispersed polymer binder. The method can also include crosslinking the dispersed polymer binder with a deblocked polyisocyanate crosslinker on the fabric substrate.
    Type: Application
    Filed: April 16, 2018
    Publication date: December 10, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis Z. GUO, Jie ZHENG
  • Publication number: 20200308436
    Abstract: 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: Application
    Filed: January 17, 2018
    Publication date: October 1, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis Z. GUO, Jie ZHENG
  • Publication number: 20200308437
    Abstract: 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: Application
    Filed: April 16, 2018
    Publication date: October 1, 2020
    Applicant: Hewlett-Packard Development Company, L,P.
    Inventors: Dennis Z. Guo, Jie ZHENG, David Michael INGLE, Ronald A. ASKELAND
  • Publication number: 20200277506
    Abstract: The present disclosure is drawn to aqueous pigment dispersions. In one example, an aqueous pigment dispersion can include from 40 wt % to 90 wt % water, from 2 wt % to 30 wt % organic co-solvent, from 7.5 wt % to 30 wt % copper phthalocyanine pigment, from 0.5 wt % to 5 wt % styrene-acrylic dispersant, and from 0.5 wt % to 5 wt % hydrophilic polyurethane dispersant having a weight average molecular weight from 10,000 Mw to 30,000 Mw. The styrene-acrylic dispersant and the hydrophilic polyurethane dispersant can be present at a weight ratio from 1:10 to 2:1.
    Type: Application
    Filed: January 19, 2018
    Publication date: September 3, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis Z. Guo, Jie ZHENG, Tienteh CHEN, David Michael INGLE, Rodney David STRAMEL, June YANG, Marcos A. Barreto CABAN
  • Publication number: 20200277507
    Abstract: The present disclosure is drawn to an aqueous ink composition, including from 60 wt % to 90 wt % water, from 4 wt % to 30 wt % organic co-solvent, and from 1 wt % to 6 wt % pigment. The aqueous ink composition can include a styrene acrylic polymer dispersant associated with a surface of the pigment and having a weight average molecular weight from 1,000 Mw to 50,000 Mw, and from 3 wt % to 15 wt % styrene C3-C5 alkyl (meth)acrylic polymer binder having a weight average molecular weight from 100,000 Mw to 500,000 Mw.
    Type: Application
    Filed: January 10, 2018
    Publication date: September 3, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Jie ZHENG, Dennis Z. GUO
  • Publication number: 20200131388
    Abstract: In an example of a method for printing on a textile, a print is generated by thermal inkjet printing a thermal inkjet ink on a cotton fabric. The thermal inkjet ink consists of a pigment, a single dispersant and binder resin, a vehicle, and a balance of water. The single dispersant and binder resin is a styrene acrylic resin having an acid number greater than 100 mg KOH/g and a weight average molecular weight less than 50,000. The vehicle includes a co-solvent, an anti-kogation agent, a humectant, a surfactant, a biocide, or combinations thereof. The print is generated without a post-printing curing process.
    Type: Application
    Filed: October 18, 2017
    Publication date: April 30, 2020
    Inventors: Dennis Z. Guo, Jie Zheng
  • Publication number: 20200131372
    Abstract: The present disclosure is drawn to aqueous pigment dispersions. In one example, an aqueous pigment dispersion can include from 40 wt % to 90 wt % water, from 2 wt % to 30 wt % organic co-solvent, from 7.5 wt % to 30 wt % quinacridone pigment, from 0.5 wt % to 3.5 wt % styrene-acrylic dispersant, and from 0.5 wt % to 3.5 wt % hydrophilic polyurethane dispersant having an acid number from 20 to 100. The styrene-acrylic dispersant and the hydrophilic polyurethane dispersant can be present at a weight ratio from 1:5 to 5:1.
    Type: Application
    Filed: September 14, 2017
    Publication date: April 30, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis Z. Guo, Jie ZHANG, Tienteh CHEN, Marcos A, BARRETO CABAN, June YANG, Rodney David STRAMEL
  • Publication number: 20200115569
    Abstract: In one aspect the present disclosure relates to an aqueous inkjet ink composition comprising a yellow azo pigment, a pigment synergist, a polymeric dispersant, 5 to 20 wt % of a latex polymer, 5 to 40 wt % of an organic co-solvent that has a boiling point of a boiling point in the range of about 170° C. to about 285° C., and water. The pigment synergist comprises a pigment of the formula (I): where each of R1 to R10 is each independently selected from H, carboxylate, and/or a sulphonate group.
    Type: Application
    Filed: July 5, 2017
    Publication date: April 16, 2020
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Phillip C. Cagle, Dennis Z. Guo
  • Publication number: 20200024469
    Abstract: The present disclosure is drawn to a green ink including a green pigment in an amount from 1.5 wt % to 6 wt %, a styrene acrylic polymer having a weight average molecular weight from 3,000 to 30,000, a polyurethane having a weight average molecular weight from 15,000 to 120,000, an organic co-solvent, and water in an amount from 50 wt % to 90 wt %.
    Type: Application
    Filed: January 30, 2017
    Publication date: January 23, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis Z. Guo, Jie ZHENG, George SARKISIAN, Aiireza RAHIMl, Yi-Hua TSAO
  • Publication number: 20190375959
    Abstract: The present disclosure is drawn to pigment dispersions including from 5 wt % to 30 wt % of a pigment having an amide group, a styrene acrylic polymer having a weight average molecular weight from 3,000 Mw to 30,000 Mw and having a weight ratio to the pigment of from 1:1 to 1:10, a lactam co-solvent having a weight ratio to the pigment of from 10:1 to 1:10, and water. The lactam co-solvent can be co-milled with the pigment and an at least 5 wt % portion of the lactam co-solvent can be adsorbed on the pigment via van der waals interaction with the amide group.
    Type: Application
    Filed: April 7, 2017
    Publication date: December 12, 2019
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Kai-Kong IU, Stone S. OUYANG, Shao-Wei LI, Shonna Anne DAWN, Dennis Z. GUO
  • Patent number: 10414930
    Abstract: The present disclosure relates to magenta inkjet inks having a quinacridone pigment and an azo pigment. The azo pigment has at least one azo compound having the formula (I), in which Ra is selected from H, aryl and C1 to C4 alkyl, and Rb, Rc and Rd are each independently selected from H, a C1 to C4 alkyl, an oxygen-containing, a nitrogen-containing and a sulphur-containing functional group. Where Ra is aryl, the aryl is not a phenyl group having at least one hydrogen atom that has been substituted with a chlorine atom.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: September 17, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Keshava A. Prasad, Dennis Z. Guo, Niamh Kelly, Kenneth Hickey, Kevin Rattigan, Claire Harley
  • Patent number: 10273376
    Abstract: An example of an ink composition includes a pigment, an anionic polymeric dispersant, polyurethane, a co-solvent, a surfactant, tristyrylphenol ethoxylate, and a balance of water. The tristyrylphenol ethoxylate is present in an amount ranging from about 0.1 wt % to about 2 wt % of a total wt % of the ink composition.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: April 30, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis P. Parazak, Gregg A. Lane, Fereshteh Khorrami, Dennis Z. Guo, Benjamin Abelovski