Patents by Inventor Daniel Vincent Keane
Daniel Vincent Keane 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: 10167404Abstract: A fixable, UV curable ink includes an aqueous ink vehicle including water and a co-solvent, a pigment, and a dispersant. A polyurethane polymer dispersion is suspended as droplets within the aqueous ink vehicle. The polyurethane polymer dispersion includes a polyurethane polymer selected from the group consisting of a polyether-based polyurethane, a polyester-based polyurethane, a polycarbonate-based polyurethane, and mixtures thereof. The polyurethane polymer has i) an acid number ranging from 0 mg/g to less than 20 mg/g and ii) a glass transition temperature of less than 0° C. A water soluble or water dispersible photoinitiator is present in the fixable, UV curable ink. A base may be included in an amount sufficient to adjust a pH of the UV curable ink so that it ranges from 7.5 to 9.5. An additive may be included and selected from the group consisting of a biocide, a non-ionic surfactant, an anti-kogation agent, a buffer, and combinations thereof.Type: GrantFiled: August 29, 2017Date of Patent: January 1, 2019Assignee: Hewlett-Packard Development Company, L.P.Inventors: Yi Feng, Yubai Bi, Daniel Vincent Keane, Ali Emamjomeh
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Patent number: 9931847Abstract: A printer is disclosed herein. The printer has a printhead having a plurality of ink nozzles for ejecting ink, a servicing mechanism for capturing the ejected ink from the ink nozzles, to service the printhead, and a control device coupled to the printhead and the servicing mechanism for regulating the servicing. As part of the regulation, the control device continues feeding a substrate towards the printhead during an idle period. The idle period of the printhead can be a duration when printing on the substrate is suspended. Further, the control device regulates ejection of ink from the ink nozzles towards the substrate during the idle period and operates the servicing mechanism during the idle period. In an example, the servicing mechanism captures the ink before the ink reaches the substrate.Type: GrantFiled: July 31, 2014Date of Patent: April 3, 2018Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey Allen Wagner, Thomas M Sabo, Ronald A Askeland, Gonzalo Gaston Llado, Alyssa Michelle Siegman, Lawrence H White, Alex Andrea Tallada, Brian J Keefe, Maria Magdalena Martinez Ferrandiz, Daniel Vincent Keane, Yi Hong Tor, Marian Dinares Argemi, Francisco Lopez Moral, Xavier Bruch, Chandrasekhar Nadimpalli
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Publication number: 20180016458Abstract: A fixable, UV curable ink includes an aqueous ink vehicle including water and a co-solvent, a pigment, and a dispersant. A polyurethane polymer dispersion is suspended as droplets within the aqueous ink vehicle. The polyurethane polymer dispersion includes a polyurethane polymer selected from the group consisting of a polyether-based polyurethane, a polyester-based polyurethane, a polycarbonate-based polyurethane, and mixtures thereof. The polyurethane polymer has i) an acid number ranging from 0 mg/g to less than 20 mg/g and ii) a glass transition temperature of less than 0° C. A water soluble or water dispersible photoinitiator is present in the fixable, UV curable ink. A base may be included in an amount sufficient to adjust a pH of the UV curable ink so that it ranges from 7.5 to 9.5. An additive may be included and selected from the group consisting of a biocide, a non-ionic surfactant, an anti-kogation agent, a buffer, and combinations thereof.Type: ApplicationFiled: August 29, 2017Publication date: January 18, 2018Inventors: Yi Feng, Yubai Bi, Daniel Vincent Keane, Ali Emamjomeh
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Patent number: 9777179Abstract: An ink set includes a pre-treatment fixing fluid including at least two metal salts and a fixable, ultraviolet (UV) curable ink. The UV curable ink includes an aqueous ink vehicle, a pigment dispersed in the aqueous ink vehicle, and a dispersant. A polyurethane polymer dispersion is suspended as droplets within the aqueous ink vehicle. The polyurethane polymer dispersion includes a polyurethane polymer selected from the group consisting of a polyether-based polyurethane, a polyester-based polyurethane, a polycarbonate-based polyurethane, and mixtures thereof. The polyurethane polymer has i) an acid number ranging from 0 mg/g to less than 20 mg/g and ii) a glass transition temperature of less than 0 C. A water soluble or water dispersible photoinitiator is present in the pre-treatment fixing fluid or in the fixable, UV curable ink.Type: GrantFiled: January 28, 2014Date of Patent: October 3, 2017Assignee: Hewlett-Packard Development Company, L.P.Inventors: Yi Feng, Yubai Bi, Daniel Vincent Keane, Ali Emamjomeh
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Publication number: 20170217189Abstract: A printer is disclosed herein. The printer has a printhead having a plurality of ink nozzles for ejecting ink, a servicing mechanism for capturing the ejected ink from the ink nozzles, to service the printhead, and a control device coupled to the printhead and the servicing mechanism for regulating the servicing. As part of the regulation, the control device continues feeding a substrate towards the printhead during an idle period. The idle period of the printhead can be a duration when printing on the substrate is suspended. Further, the control device regulates ejection of ink from the ink nozzles towards the substrate during the idle period and operates the servicing mechanism during the idle period. In an example, the servicing mechanism captures the ink before the ink reaches the substrate.Type: ApplicationFiled: July 31, 2014Publication date: August 3, 2017Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Jeffrey Allen Wagner, Thomas M Sabo, Ronald A Askeland, Gonzalo Gaston Llado, Alyssa Michelle Siegman, Lawrence H White, Alex Andrea Tallada, Brian J Keefe, Maria Magdalena Martinez Ferrandiz, Daniel Vincent Keane, Yi Hong Tor, Marian Dinares Argemi, Francisco Lopez Moral, Xavier Bruch, Chandrasekhar Nadimpalli
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Publication number: 20160304734Abstract: An ink set includes a pre-treatment fixing fluid including at least two metal salts and a fixable, ultraviolet (UV) curable ink. The UV curable ink includes an aqueous ink vehicle, a pigment dispersed in the aqueous ink vehicle, and a dispersant. A polyurethane polymer dispersion is suspended as droplets within the aqueous ink vehicle. The polyurethane polymer dispersion includes a polyurethane polymer selected from the group consisting of a polyether-based polyurethane, a polyester-based poly-urethane, a polycarbonate-based polyurethane, and mixtures thereof. The polyurethane polymer has i) an acid number ranging from 0 mg/g to less than 20 mg/g and ii) a glass transition temperature of less than 0 C. A water soluble or water dispersible photoinitiator is present in the pre-treatment fixing fluid or in the fixable, UV curable ink.Type: ApplicationFiled: January 28, 2014Publication date: October 20, 2016Applicant: Hewlett-Packard Development Company, L.P.Inventors: Yi Feng, Yubai Bi, Daniel Vincent Keane, Ali Emamjomeh