Patents by Inventor Igor Chertov
Igor Chertov 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: 20220146962Abstract: In an example of the disclosure, carrier liquid is supplied to a container with a set of walls defined at least partially by a surface of an electrode. The carrier liquid is caused to move through a container via a carrier liquid flow path to sequentially encounter a set of accumulation elements. Each accumulation element is situated between adjacent walls. A voltage is applied to the electrode to generate an electric field between the electrode surface and the set of accumulation elements. The electric field causes contaminant from the carrier liquid to adhere to the set of accumulation elements.Type: ApplicationFiled: July 31, 2019Publication date: May 12, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Igor Chertov, Doron Schlumm, Sergei Trifonov
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Patent number: 11249435Abstract: An example cleaning station for a liquid electrophotographic printer is described. The cleaning station has a first cleaning member, a second cleaning member, and a biasing member. The cleaning station is configured to move between a first position and a second position with respect to a photo imaging member of the printer. In the first position, the first cleaning member is arranged to remove particles from the photo imaging member of the printer and the second cleaning member is arranged to apply a force to a layer of liquid applied to the photo imaging member. In the second position, the biasing member is configured to cause the second cleaning member to contact the first cleaning member to clean the second cleaning member.Type: GrantFiled: October 19, 2017Date of Patent: February 15, 2022Assignee: HP Indigo B.V.Inventors: Igor Chertov, Doron Schlumm, Shaul Zucker
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Publication number: 20210341857Abstract: A print agent filtration apparatus is disclosed. The filtration apparatus is to remove non-liquid contaminant from liquid carrier. The apparatus comprises an electrode having a first surface, wherein the electrode is to generate an electric field towards liquid carrier containing non-liquid contaminant. The apparatus further comprises a second surface to accumulate non-liquid contaminant removed from the liquid carrier, the second surface being formed at least in part from a ceramic and movable relative to the first surface. A gap between the first surface and the second surface is substantially constant over the extent of the first surface. The first surface and the second surface define a passage therebetween through which the liquid carrier may pass. An electric field formed between the first surface and the second surface is to act on the liquid carrier, to thereby cause non-liquid contaminant to adhere to the second surface. A method and a print apparatus are also disclosed.Type: ApplicationFiled: November 29, 2018Publication date: November 4, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Igor Chertov, Sergei Trifonov, Doron Schlumm
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Publication number: 20210291088Abstract: An filtration apparatus is disclosed. The filtration apparatus is to remove non-liquid contaminant from liquid carrier. The filtration apparatus may include an electrode having a first surface, wherein the electrode is to generate an electric field towards liquid carrier containing non-liquid contaminant. The filtration apparatus may include a reservoir having a wall defined at least partially by the first surface, the reservoir to house a volume of liquid carrier. The filtration apparatus may include a plurality of plates, each plate having an accumulation surface, wherein a portion of each plate is within the reservoir, so as to be submerged in the volume of liquid carrier. An electric field formed between the first surface and the accumulation surface of each plate of the plurality of plates may act on the liquid carrier, to thereby cause non-liquid contaminant to adhere to an accumulation surface of a plate of the plurality of plates. A method and a print apparatus are also disclosed.Type: ApplicationFiled: November 29, 2018Publication date: September 23, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Doron Schlumm, Igor Chertov, Sergei Trifonov
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Publication number: 20210278795Abstract: An example cleaning station for a liquid electrophotographic printer is described. The cleaning station has a first cleaning member, a second cleaning member, and a biasing member. The cleaning station is configured to move between a first position and a second position with respect to a photo imaging member of the printer. In the first position, the first cleaning member is arranged to remove particles from the photo imaging member of the printer and the second cleaning member is arranged to apply a force to a layer of liquid applied to the photo imaging member. In the second position, the biasing member is configured to cause the second cleaning member to contact the first cleaning member to clean the second cleaning member.Type: ApplicationFiled: October 19, 2017Publication date: September 9, 2021Inventors: Igor Chertov, Doron Schlumm, Shaul Zucker
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Patent number: 10866541Abstract: A cleaning unit for removing debris from an ink transfer surface includes a cleaning roller having: a microcellular material outer layer; a wetting module to supply cleaning fluid to the microcellular material outer layer of the cleaning roller; and an extractor to remove cleaning fluid and debris from the cleaning roller.Type: GrantFiled: October 30, 2019Date of Patent: December 15, 2020Assignee: HP Indigo B.V.Inventor: Igor Chertov
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Publication number: 20200241448Abstract: An example cleaning station for a liquid electrophotographic printer is provided. The cleaning station has a sponge arranged to remove particles from a photo imaging plate of the printer, a fluid supply arranged to apply cleaning fluid to the sponge, a squeezing component arranged to squeeze the sponge in order to remove cleaning fluid and particles from the sponge, and a charging component arranged to electrically charge the squeezing component such that particles are attracted from the sponge to the squeezing component. The squeezing component is electrically isolated within the cleaning station.Type: ApplicationFiled: October 18, 2017Publication date: July 30, 2020Inventors: Doron Schlumm, Igor Chertov, lhab Khahil
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Publication number: 20200064758Abstract: A cleaning unit for removing debris from an ink transfer surface includes a cleaning roller having: a microcellular material outer layer; a wetting module to supply cleaning fluid to the microcellular material outer layer of the cleaning roller; and an extractor to remove cleaning fluid and debris from the cleaning roller.Type: ApplicationFiled: October 30, 2019Publication date: February 27, 2020Applicant: HP INDIGO B.V.Inventor: Igor Chertov
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Patent number: 10481527Abstract: A cleaning unit for removing debris from an ink transfer surface includes a cleaning roller having: a microcellular material outer layer; a wetting module to supply cleaning fluid to the microcellular material outer layer of the cleaning roller; and an extractor to remove cleaning fluid and debris from the cleaning roller.Type: GrantFiled: April 13, 2016Date of Patent: November 19, 2019Assignee: HP Indigo B.V.Inventor: Igor Chertov
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Publication number: 20190025733Abstract: Herein is described a cleaning unit for removing debris from an ink transfer surface, the cleaning unit comprising a cleaning roller comprising: a microcellular material outer layer; a wetting module to supply cleaning fluid to the microcellular material outer layer of the cleaning roller; and an extractor to remove cleaning fluid and debris from the cleaning roller.Type: ApplicationFiled: April 13, 2016Publication date: January 24, 2019Applicant: HP INDIGO B.V.Inventor: Igor Chertov