Patents by Inventor John W. Godden
John W. Godden 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: 12038698Abstract: In one example in accordance with the present disclosure, a developer unit seal is described. The developer unit seal includes an endcap. The endcap has an opening to receive a dynamic seal for a roller, an inlet to receive print fluid, and a channel embedded in a surface of the endcap. The channel connects the inlet with the opening to direct print fluid to the opening. The developer unit seal also includes a sealing member to cover the channel.Type: GrantFiled: April 8, 2020Date of Patent: July 16, 2024Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Jeffrey Zampell, John W. Godden
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Patent number: 11934114Abstract: In one example in accordance with the present disclosure, a developer unit seal is described. The seal includes a first sealing member to contact an end cap of the developer unit. The first sealing member has ports to align with rollers that are to protrude into the end cap. The seal includes a second sealing member to contact the first sealing member. The second sealing member has ports to align with the rollers. Channels are disposed between the first sealing member and the second sealing member to direct print fluid to each of the ports.Type: GrantFiled: October 8, 2019Date of Patent: March 19, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey Zampell, John W. Godden
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Publication number: 20230094249Abstract: In one example in accordance with the present disclosure, a developer unit seal is described. The developer unit seal includes an endcap. The endcap has an opening to receive a dynamic seal for a roller, an inlet to receive print fluid, and a channel embedded in a surface of the endcap. The channel connects the inlet with the opening to direct print fluid to the opening. The developer unit seal also includes a sealing member to cover the channel.Type: ApplicationFiled: April 8, 2020Publication date: March 30, 2023Applicant: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey Zampell, John W. Godden
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Publication number: 20220283527Abstract: In one example in accordance with the present disclosure, a developer unit seal is described. The seal includes a first sealing member to contact an end cap of the developer unit. The first sealing member has ports to align with rollers that are to protrude into the end cap. The seal includes a second sealing member to contact the first sealing member. The second sealing member has ports to align with the rollers. Channels are disposed between the first sealing member and the second sealing member to direct print fluid to each of the ports.Type: ApplicationFiled: October 8, 2019Publication date: September 8, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey Zampell, John W. Godden
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Patent number: 11016419Abstract: A binary printing fluid developer assembly may include a developer roller to receive a printing fluid and transfer a portion of the printing fluid to a photoconductive member; a number of electrodes to create an electrical potential bias between the number of electrodes and the developer roller; a cleaner roller to remove an amount of printing fluid from the developer roller; and a sponge roller to clean the cleaner roller wherein a gap is maintained between the sponge roller and the number of electrodes.Type: GrantFiled: March 13, 2017Date of Patent: May 25, 2021Assignee: HP Indigo B.V.Inventors: David Sabo, John W. Godden
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Patent number: 10928753Abstract: A printing fluid developer that includes a developer roller; a cleaner roller forming a nip with the developer roller and held by a number of bearings at each end that are free to move within a slot towards and away from the developer roller; and at least one spring biased to force the bearings towards one side of the slot.Type: GrantFiled: March 13, 2017Date of Patent: February 23, 2021Assignee: HP Indigo B.V.Inventors: David Sabo, John W. Godden, Alex DeRegules
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Patent number: 10877402Abstract: In an example, a print agent application assembly includes a print agent transfer roller to receive print agent and transfer a portion of the print agent to a photoconductive surface and a print agent regulator roller to regulate a film thickness of print agent on the print agent transfer roller. The print agent regulator roller may include a nip forming region and a first mounting region. The print agent application assembly may further include a first resilient component which spans a diametrical width of the print agent regulator roller and acts on the print agent regulator roller outside the nip forming region to impart a lateral force to the first mounting region, the lateral force urging the print agent regulator roller towards the print agent transfer roller.Type: GrantFiled: February 27, 2017Date of Patent: December 29, 2020Assignee: HP Indigo B.V.Inventors: David Sabo, John W. Godden, Alex DeRegules
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Patent number: 10845734Abstract: A print agent application assembly is disclosed. The print agent application assembly may include a first roller to remove print agent from a surface of a print agent transfer roller. The print agent application assembly may include a second roller having an absorbent element to engage the first roller as the second roller rotates relative to the first roller, the absorbent element to absorb print agent from the first roller. The print agent application assembly may include a wiper assembly. The wiper assembly may include a wiper element to scrape print agent from the surface of the first roller as the first roller rotates, and an engagement element to engage with and compress a portion of the absorbent element of the second roller as the second roller rotates relative to the wiper assembly. A method and a roller cleaning assembly are also disclosed.Type: GrantFiled: February 27, 2017Date of Patent: November 24, 2020Assignee: HP Indigo B.V.Inventors: David Sabo, John W. Godden
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Publication number: 20200241447Abstract: A binary printing fluid developer assembly may include a developer roller to receive a printing fluid and transfer a portion of the printing fluid to a photoconductive member; a number of electrodes to create an electrical potential bias between the number of electrodes and the developer roller; a cleaner roller to remove an amount of printing fluid from the developer roller; and a sponge roller to clean the cleaner roller wherein a gap is maintained between the sponge roller and the number of electrodes.Type: ApplicationFiled: March 13, 2017Publication date: July 30, 2020Inventors: David Sabo, John W. Godden
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Publication number: 20200233340Abstract: A printing fluid developer that includes a developer roller; a cleaner roller forming a nip with the developer roller and held by a number of bearings at each end that are free to move within a slot towards and away from the developer roller; and at least one spring biased to force the bearings towards one side of the slot.Type: ApplicationFiled: March 13, 2017Publication date: July 23, 2020Inventors: David Sabo, John W. Godden, Alex DeRegules
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Publication number: 20200192248Abstract: In an example, a print agent application assembly includes a print agent transfer roller to receive print agent and transfer a portion of the print agent to a photoconductive surface and a print agent regulator roller to regulate a film thickness of print agent on the print agent transfer roller. The print agent regulator roller may include a nip forming region and a first mounting region. The print agent application assembly may further include a first resilient component which spans a diametrical width of the print agent regulator roller and acts on the print agent regulator roller outside the nip forming region to impart a lateral force to the first mounting region, the lateral force urging the print agent regulator roller towards the print agent transfer roller.Type: ApplicationFiled: February 27, 2017Publication date: June 18, 2020Applicant: HP Indigo B.V.Inventors: David Sabo, John W. Godden, Alex DeRegules
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Publication number: 20200089145Abstract: A print agent application assembly is disclosed. The print agent application assembly may include a first roller to remove print agent from a surface of a print agent transfer roller. The print agent application assembly may include a second roller having an absorbent element to engage the first roller as the second roller rotates relative to the first roller, the absorbent element to absorb print agent from the first roller. The print agent application assembly may include a wiper assembly. The wiper assembly may include a wiper element to scrape print agent from the surface of the first roller as the first roller rotates, and an engagement element to engage with and compress a portion of the absorbent element of the second roller as the second roller rotates relative to the wiper assembly. A method and a roller cleaning assembly are also disclosed.Type: ApplicationFiled: February 27, 2017Publication date: March 19, 2020Applicant: HP Indigo B.V.Inventors: David Sabo, John W. Godden
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Patent number: 10429768Abstract: In some examples, a printing liquid developer includes a developer roller that has a hollow tubular base body formed of a material including conductive carbon fiber, a conductive, compliant layer around an outer surface of the hollow tubular base body, and an electrically conductive support separate from the hollow tubular base body and electrically contacted to a surface of the hollow tubular base body.Type: GrantFiled: January 28, 2016Date of Patent: October 1, 2019Assignee: HP Indigo B.V.Inventors: David Sabo, Stanley J. Kozmiski, Guang Jin Li, John W. Godden
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Patent number: 10261445Abstract: Examples of printing devices are described. Such printing devices may include an end cap having an engaging portion and a hook portion, a roller, and a latch unit to hold the roller in contact with the end cap when the latch unit is in a closed position. The latch unit may include a latch having a protrusion to engage with the engaging portion of the end cap, and a spring attached to the end cap and to the latch. In one example, the hook portion of the end cap is to hold the latch in a closed position in counteraction to a force provided by the spring under a tension.Type: GrantFiled: October 28, 2015Date of Patent: April 16, 2019Assignee: HP Indigo B.V.Inventors: David Sabo, John W. Godden
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Publication number: 20190004452Abstract: In some examples, a printing liquid developer includes a developer roller that has a hollow tubular base body formed of a material comprising conductive carbon fiber, a conductive, compliant layer around an outer surface of the hollow tubular base body, and an electrically conductive support separate from the hollow tubular base body and electrically contacted to a surface of the hollow tubular base body.Type: ApplicationFiled: January 28, 2016Publication date: January 3, 2019Applicant: HP Indigo B.V.Inventors: David SABO, Stanley J. KOZMISKI, Guang Jin LI, John W. GODDEN
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Publication number: 20180313397Abstract: In an example, a torque key may include a body to mate with a wheel, a plurality of driving lugs extending radially outward from the body, and a plurality of key lugs extending radially into the body. The body may have an inner bore to receive a shaft, each driving lug may engage with a driven lug protruding from an axial face of the wheel, and each key lug may engage with a slot of the shaft.Type: ApplicationFiled: April 6, 2016Publication date: November 1, 2018Applicant: HP INDIGO B.V.Inventors: Blair A. Butler, Eric G. Nelson, John W. Godden
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Publication number: 20180224771Abstract: Examples of printing devices are described. Such printing devices may include an end cap having an engaging portion and a hook portion, a roller, and a latch unit to hold the roller in contact with the end cap when the latch unit is in a closed position. The latch unit may include a latch having a protrusion to engage with the engaging portion of the end cap, and a spring attached to the end cap and to the latch. In one example, the hook portion of the end cap is to hold the latch in a closed position in counteraction to a force provided by the spring under a tension.Type: ApplicationFiled: October 28, 2015Publication date: August 9, 2018Applicant: HP INDIGO B.V.Inventors: David Sabo, John W. Godden
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Patent number: 9304465Abstract: In one example, a processor readable medium has instructions thereon that, when executed by a processor, cause a system to detect a change in electrical conduction of a liquid moving at an interface between two surfaces and determine a conductivity of the liquid based on the detected change in conduction.Type: GrantFiled: May 24, 2013Date of Patent: April 5, 2016Assignee: Hewlett-Packard Development Company, L.P.Inventors: Matthew G. Lopez, David F. Chiu, David Sabo, John W. Godden, Christopher S. Tanner, Eric G. Nelson, Guang Jin Li, James Michael Pingel
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Publication number: 20140348526Abstract: In one example, a processor readable medium has instructions thereon that, when executed by a processor, cause a system to detect a change in electrical conduction of a liquid moving at an interface between two surfaces and determine a conductivity of the liquid based on the detected change in conduction.Type: ApplicationFiled: May 24, 2013Publication date: November 27, 2014Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Matthew G. Lopez, David F. Chiu, David Sabo, John W. Godden, Christopher S. Tanner, Eric G. Nelson, Guang Jin Li, James Michael Pingel
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Patent number: 8348531Abstract: Various embodiments and methods relating to moving a printed upon web along bowed segments of a web path through at least three consecutive turns in a same direction are disclosed.Type: GrantFiled: October 27, 2008Date of Patent: January 8, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: John W. Godden, Paul C. Ray, Jaren D. Marier, Mun Yew Lee, Paul D. Rauscher, Robert J. Manders