Patents by Inventor Minedys Macias Guzman
Minedys Macias Guzman 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: 11906925Abstract: Herein is described a liquid electrophotographic a printing apparatus comprising: a photoconductor; a liquid electrophotographic ink developer unit for applying liquid electrophotographic ink to the photoconductor; a cleaner roller contactable with the photoconductor, the cleaner roller comprising an open-celled foam material having thereon a coating comprising abrasive particles and a binder. Also described herein is a cleaner roller for cleaning a liquid electrophotographic printing apparatus' photoconductor and a method of operating a liquid electrophotographic printing apparatus using a cleaner roller described herein.Type: GrantFiled: April 8, 2020Date of Patent: February 20, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Bin Huang, Minedys Macias Guzman, Daniel C. Tanchangco
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Publication number: 20230147465Abstract: Herein is described a liquid electrophotographic a printing apparatus comprising: a photoconductor; a liquid electrophotographic ink developer unit for applying liquid electrophotographic ink to the photoconductor; a cleaner roller contactable with the photoconductor, the cleaner roller comprising an open-celled foam material having thereon a coating comprising abrasive particles and a binder. Also described herein is a cleaner roller for cleaning a liquid electrophotographic printing apparatus’ photoconductor and a method of operating a liquid electrophotographic printing apparatus using a cleaner roller described herein.Type: ApplicationFiled: April 8, 2020Publication date: May 11, 2023Inventors: Bin Huang, Minedys Macias Guzman, Daniel C. Tanchangco
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Patent number: 11433663Abstract: In an example, a method includes rotating a print apparatus component to be cleaned about a first rotational axis. A cleaning element having a cleaning surface in contact with the print apparatus component may be driven such that the cleaning surface has a component of motion which is parallel to the first rotational axis in a contact region. A relative velocity of the cleaning element and the print apparatus component may be varied during a cleaning operation.Type: GrantFiled: September 14, 2017Date of Patent: September 6, 2022Assignee: HP Indigo B.V.Inventors: Lavi Cohen, Minedys Macias Guzman, Michael Vinokur
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Patent number: 11237513Abstract: There is provided a sponge cleaning roller for cleaning an electrophotographic printing drum, the sponge of the cleaning roller having a Shore 00 hardness of about 9 or greater and a porosity of about 38 ppi or greater.Type: GrantFiled: July 27, 2018Date of Patent: February 1, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Minedys Macias Guzman, Ihab Khahil, Nir Ptashnik
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Publication number: 20210129522Abstract: In an example, a method includes rotating a print apparatus component to be cleaned about a first rotational axis. A cleaning element having a cleaning surface in contact with the print apparatus component may be driven such that the cleaning surface has a component of motion which is parallel to the first rotational axis in a contact region. A relative velocity of the cleaning element and the print apparatus component may be varied during a cleaning operation.Type: ApplicationFiled: September 14, 2017Publication date: May 6, 2021Inventors: Lavi Cohen, Minedys Macias Guzman, Michael Vinokur
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Publication number: 20210048773Abstract: There is provided a sponge cleaning roller for cleaning an electrophotographic printing drum, the sponge of the cleaning roller having a Shore 00 hardness of about 9 or greater and a porosity of about 38 ppi or greater.Type: ApplicationFiled: July 27, 2018Publication date: February 18, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Minedys MACIAS GUZMAN, lhab KHAHIL, Nir PTASHNIK
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Patent number: 10877424Abstract: The present disclosure relates to an electrophotographic printer comprising a photoconductive cylinder, and a cleaning element comprising an absorbent foam substrate. The absorbent foam substrate has an abrasive material disposed on at least an outer surface of the absorbent foam substrate. At least part of the outer surface of the absorbent foam substrate is engageable with the photoconductive cylinder.Type: GrantFiled: September 15, 2017Date of Patent: December 29, 2020Assignee: HP Indigo B.V.Inventors: Lavi Cohen, Minedys Macias Guzman
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Publication number: 20200201236Abstract: The present disclosure relates to an electrophotographic printer comprising a photoconductive cylinder, and a cleaning element comprising an absorbent foam substrate. The absorbent foam substrate has an abrasive material disposed on at least an outer surface of the absorbent foam substrate. At least part of the outer surface of the absorbent foam substrate is engageable with the photoconductive cylinder.Type: ApplicationFiled: September 15, 2017Publication date: June 25, 2020Inventors: Lavi Cohen, Minedys Macias Guzman
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Patent number: 10294363Abstract: Described herein is a two-component coating system. The two-component coating system may include a base component and a hardener component. The base component may include: up to 55 wt. % hydroxyl terminated polyester and/or hydroxyl terminated polyether; up to 3 wt. % hydroxyl terminated polysiloxane; and a solvent selected from aromatic hydrocarbons, ketones, esters and combinations thereof, wherein the hydroxyl terminated polyester and/or hydroxyl terminated polyether and the hydroxyl terminated polysiloxane are dissolved in the solvent. The hardener component may include: up to 80 wt. % polyisocyanate; and a solvent selected from aromatic hydrocarbons, ketones, esters and combinations thereof, wherein the polyisocyanate is dissolved in the solvent.Type: GrantFiled: April 28, 2015Date of Patent: May 21, 2019Assignee: HP Indigo B.V.Inventor: Minedys Macias Guzman
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Publication number: 20180037733Abstract: Described herein is a two-component coating system. The two-component coating system may include a base component and a hardener component. The base component may include: up to 55 wt. % hydroxyl terminated polyester and/or hydroxyl terminated polyether; up to 3 wt. % hydroxyl terminated polysiloxane; and a solvent selected from aromatic hydrocarbons, ketones, esters and combinations thereof, wherein the hydroxyl terminated polyester and/or hydroxyl terminated polyether and the hydroxyl terminated polysiloxane are dissolved in the solvent. The hardener component may include: up to 80 wt. % polyisocyanate; and a solvent selected from aromatic hydrocarbons, ketones, esters and combinations thereof, wherein the polyisocyanate is dissolved in the solvent.Type: ApplicationFiled: April 28, 2015Publication date: February 8, 2018Inventor: Minedys Macias Guzman
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Patent number: 9822276Abstract: Examples provide inkjet ink sets and related methods. An ink set may include a pre-treatment fixing fluid, an ink, and a post-treatment fluid including a wax and a binder present in the post-treatment fluid in a range of about 10 weight percent to about 30 weight percent.Type: GrantFiled: August 14, 2013Date of Patent: November 21, 2017Assignee: Hewlett-Packard Development Company, L.P.Inventors: Elizabeth Ann Visnyak, Ali Emamjomeh, George Sarkisian, David Michael Ingle, Minedys Macias Guzman
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Publication number: 20160152858Abstract: Examples provide inkjet ink sets and related methods. An ink set may include a pre-treatment fixing fluid, an ink, and a post-treatment fluid including a wax and a binder present in the post-treatment fluid in a range of about 10 weight percent to about 30 weight percent.Type: ApplicationFiled: August 14, 2013Publication date: June 2, 2016Inventors: Elizabeth Ann Visnyak, Ali Emamjomeh, George Sarkisian, David Michael Ingle, Minedys Macias Guzman
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Publication number: 20130085217Abstract: The present disclosure provides inks, ink sets, and method for manufacturing inkjet inks. The inkjet ink comprises a colorant; a liquid vehicle; a surfactant; and a polyurethane binder, the polyurethane binder including polymerized monomers of a polyether polyol, a diisocyanate, and an acid polyol, where the polyurethane binder has a Mw from about 35K to 50K and an acid number from 51 to 60.Type: ApplicationFiled: June 17, 2010Publication date: April 4, 2013Applicant: Hewlett-Packard Development Company, LPInventors: Kai-Kong Iu, Shao-Wei Li, Dennis Z. Guo, Yubai Bi, Minedys Macias Guzman