Patents by Inventor Johann Junginger
Johann Junginger 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: 11968900Abstract: An apparatus 10 for poling piezoelectric material includes a platen 22 which holds a sample 20 of piezoelectric material to be poled and a stage 30 to which the platen is mounted. The stage 30 is arranged to selectively move the platen 22 and thereby the sample 20 which the platen 22 holds. The platen 22 is movable by the stage 30 selectively between a first position and a second position. A corona source 40 generates a corona to which the sample 20 is exposed when the platen 22 is moved to the first position by the stage 30. An electrostatic voltmeter 60 having a probe 62 measures a surface potential of the sample 20 when the platen 22 is moved to the second position by the stage 30.Type: GrantFiled: December 2, 2020Date of Patent: April 23, 2024Assignee: XEROX CORPORATIONInventors: Johann Junginger, Simon Burke, Sarah Vella
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Publication number: 20220173304Abstract: An apparatus 10 for poling piezoelectric material includes a platen 22 which holds a sample 20 of piezoelectric material to be poled and a stage 30 to which the platen is mounted. The stage 30 is arranged to selectively move the platen 22 and thereby the sample 20 which the platen 22 holds. The platen 22 is movable by the stage 30 selectively between a first position and a second position. A corona source 40 generates a corona to which the sample 20 is exposed when the platen 22 is moved to the first position by the stage 30. An electrostatic voltmeter 60 having a probe 62 measures a surface potential of the sample 20 when the platen 22 is moved to the second position by the stage 30.Type: ApplicationFiled: December 2, 2020Publication date: June 2, 2022Applicant: Xerox CorporationInventors: Johann Junginger, Simon Burke, Sarah Vella
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Patent number: 11224129Abstract: An method for operating an object printing system printer prints electrical circuits on non-planar areas of objects and accurately places electronic components within the printed circuits. The method includes operation of a direct-to-object printer to form an electrical circuit on an object secured within the direct-to-object printer and operation of an electronic component placement system to retrieve an electronic component and install the electronic component in the electrical circuit on the object secured within the direct-to-object printer in response to a generation of a signal by the direct-to-object printer for the electronic component placement system that indicates the electronic component is to be installed in the circuit on the object secured within the direct-to-object printer.Type: GrantFiled: September 2, 2020Date of Patent: January 11, 2022Assignee: Xerox CorporationInventors: Chad S. Smithson, Ethen Shen, Johann Junginger, Tianxiao Xu
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Publication number: 20200404793Abstract: An method for operating an object printing system printer prints electrical circuits on non-planar areas of objects and accurately places electronic components within the printed circuits. The method includes operation of a direct-to-object printer to form an electrical circuit on an object secured within the direct-to-object printer and operation of an electronic component placement system to retrieve an electronic component and install the electronic component in the electrical circuit on the object secured within the direct-to-object printer in response to a generation of a signal by the direct-to-object printer for the electronic component placement system that indicates the electronic component is to be installed in the circuit on the object secured within the direct-to-object printer.Type: ApplicationFiled: September 2, 2020Publication date: December 24, 2020Inventors: Chad S. Smithson, Ethen Shen, Johann Junginger, Tianxiao Xu
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Patent number: 10842026Abstract: An object printing system printer enables printing of electrical circuits on non-planar areas of objects and the accurate placement of electronic components within the printed circuits. The system includes a direct-to-object printer and an electronic component placement system. The direct-to-object printer is configured to form an electrical circuit on an object secured within the direct-to-object printer. The electronic component placement system is configured to retrieve an electronic component and install the electronic component in the electrical circuit on the object secured within the direct-to-object printer in response to the direct-to-object printer generating a signal for the electronic component placement system that indicates the electronic component is to be installed in the circuit on the object secured within the direct-to-object printer.Type: GrantFiled: February 12, 2018Date of Patent: November 17, 2020Assignee: Xerox CorporationInventors: Chad S. Smithson, Ethan Shen, Johann Junginger, Tianxiao Xu
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Publication number: 20190254171Abstract: An object printing system printer enables printing of electrical circuits on non-planar areas of objects and the accurate placement of electronic components within the printed circuits. The system includes a direct-to-object printer and an electronic component placement system. The direct-to-object printer is configured to form an electrical circuit on an object secured within the direct-to-object printer. The electronic component placement system is configured to retrieve an electronic component and install the electronic component in the electrical circuit on the object secured within the direct-to-object printer in response to the direct-to-object printer generating a signal for the electronic component placement system that indicates the electronic component is to be installed in the circuit on the object secured within the direct-to-object printer.Type: ApplicationFiled: February 12, 2018Publication date: August 15, 2019Inventors: Chad S. Smithson, Ethan Shen, Johann Junginger, Tianxiao Xu
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Publication number: 20170131676Abstract: Methods for lubricating an imaging member include applying lubricant-containing capsules to the surface of the imaging member via a non-contact applicator. The capsules are applied upstream of a cleaning blade after image transfer to another substrate, such that the cleaning blade ruptures the capsules, thereby releasing the lubricant contained therein.Type: ApplicationFiled: January 19, 2017Publication date: May 11, 2017Inventors: Yu Liu, Johann Junginger, Sarah Vella, Cuong Vong, Naveen Chopra, Nan-Xing Hu
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Patent number: 9575458Abstract: Methods for lubricating an imaging member include applying lubricant-containing capsules to the surface of the imaging member via a non-contact applicator. The capsules are applied upstream of a cleaning blade after image transfer to another substrate, such that the cleaning blade ruptures the capsules, thereby releasing the lubricant contained therein.Type: GrantFiled: November 8, 2013Date of Patent: February 21, 2017Assignee: XEROX CORPORATIONInventors: Yu Liu, Johann Junginger, Sarah Vella, Cuong Vong, Naveen Chopra, Nan-Xing Hu
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Patent number: 9122205Abstract: An imaging apparatus includes an imaging member having a surface, a development component that is not in physical contact with the imaging member, and a power source for generating an electric field between the imaging member surface and the development component. An ink is electrohydrodynamically transferred from the development component to the imaging member surface when the electric field is generated.Type: GrantFiled: May 29, 2013Date of Patent: September 1, 2015Assignee: Xerox CorporationInventors: Yu Liu, Yiliang Wu, Johann Junginger, Ping Liu
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Publication number: 20150212446Abstract: There is described an a bias charge roller including an electrically conductive core and an outer layer axially supported on the core. The outer layer includes a continuous raised pattern above a non-contact surface wherein the continuous raised pattern includes a contact surface having a height of from about 10 microns to about 40 microns above the non-contact surface. The outer layer transitions from the contact surface to the non-contact surface over a minimum linear distance of 100 microns or greater. The contact surface is configured to contact a charge-retentive surface of an electrophotographic imaging member so as to charge the charge-retentive surface.Type: ApplicationFiled: January 30, 2014Publication date: July 30, 2015Applicant: Xerox CorporationInventors: Gregory Michael McGuire, Yu Liu, Johann Junginger, Vladislav Skorokhod, Sarah Jane Vella, Simon C. Burke
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Patent number: 9075332Abstract: There is described an a bias charge roller including an electrically conductive core and an outer layer axially supported on the core. The outer layer includes a continuous raised pattern above a non-contact surface wherein the continuous raised pattern includes a contact surface having a height of from about 10 microns to about 40 microns above the non-contact surface. The outer layer transitions from the contact surface to the non-contact surface over a minimum linear distance of 100 microns or greater. The contact surface is configured to contact a charge-retentive surface of an electrophotographic imaging member so as to charge the charge-retentive surface.Type: GrantFiled: January 30, 2014Date of Patent: July 7, 2015Assignee: Xerox CorporationInventors: Gregory Michael McGuire, Yu Liu, Johann Junginger, Vladislav Skorokhod, Sarah Jane Vella, Simon C. Burke
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Patent number: 9063509Abstract: An imaging apparatus includes an imaging member having a surface, a delivery member that is spaced apart from the imaging member, and a power source for generating an electric field between the imaging member surface and the delivery member. A functional material is electrohydrodynamically transferred from the delivery member to the imaging member surface when the electric field is generated.Type: GrantFiled: July 11, 2013Date of Patent: June 23, 2015Assignee: Xerox CorporationInventors: Yu Liu, Yu Qi, Vladislav Skorokhod, Johann Junginger, Sarah Vella, Nan-Xing Hu
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Patent number: 9046804Abstract: An image forming apparatus includes an electrophotographic photoconductive member and a delivery unit. The delivery unit is disposed in contact with a surface of the photoconductive member to apply a layer of functional materials to the surface of the photoconductive member, wherein a cylindrical axis of the delivery unit is angled with respect to a cylindrical axis of the photoconductive member to increase uniformity of the functional materials layer. An image forming apparatus an electrophotographic photoconductive member, a charging unit and a delivery unit disposed in contact with the surface of the charging unit, wherein the delivery unit applies a layer of functional materials to the surface of the photoconductive member. and a cylindrical axis of the delivery unit is angled with respect to a cylindrical axis of the charging unit to increase the uniformity of the functional materials layer.Type: GrantFiled: June 19, 2013Date of Patent: June 2, 2015Assignee: XEROX CORPORATIONInventors: Yu Liu, Sarah J. Vella, Richard Andrew Klenkler, Johann Junginger
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Publication number: 20150132037Abstract: Methods for lubricating an imaging member include applying lubricant-containing capsules to the surface of the imaging member via a non-contact applicator. The capsules are applied upstream of a cleaning blade after image transfer to another substrate, such that the cleaning blade ruptures the capsules, thereby releasing the lubricant contained therein.Type: ApplicationFiled: November 8, 2013Publication date: May 14, 2015Applicant: Xerox CorporationInventors: Yu Liu, Johann Junginger, Sarah Vella, Cuong Vong, Naveen Chopra, Nan-Xing Hu
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Publication number: 20150016834Abstract: An imaging apparatus includes an imaging member having a surface, a delivery member that is spaced apart from the imaging member, and a power source for generating an electric field between the imaging member surface and the delivery member. A functional material is electrohydrodynamically transferred from the delivery member to the imaging member surface when the electric field is generated.Type: ApplicationFiled: July 11, 2013Publication date: January 15, 2015Inventors: Yu Liu, Yu Qi, Vladislav Skorokhod, Johann Junginger, Sarah Vella, Nan-Xing Hu
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Patent number: 8929767Abstract: An image forming apparatus including an electrophotographic photoconductive member, a charging unit, a delivery unit and a cleaning unit. The charging unit is disposed in contact with the surface of the photoconductive member and the delivery unit disposed in contact with the surface of the charging unit. The delivery unit applies a layer of functional material to a surface of the charging unit and the charging unit in turn applies a layer of the functional material onto the surface of the photoconductive member. The cleaning unit is disposed in contact with a surface of the charging unit to clean the charging unit and reduce contamination of a surface of the delivery unit. The cleaning unit is disposed in an upstream direction of the delivery roller relative to a rotation direction of the charging unit.Type: GrantFiled: February 21, 2013Date of Patent: January 6, 2015Assignee: Xerox CorporationInventors: Yu Liu, Sarah J. Vella, Gregory McGuire, Gaetano Lavigne, Nan-xing Hu, Johann Junginger
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Publication number: 20140376965Abstract: An image forming apparatus includes an electrophotographic photoconductive member and a delivery unit. The delivery unit is disposed in contact with a surface of the photoconductive member to apply a layer of functional materials to the surface of the photoconductive member, wherein a cylindrical axis of the delivery unit is angled with respect to a cylindrical axis of the photoconductive member to increase uniformity of the functional materials layer. An image forming apparatus an electrophotographic photoconductive member, a charging unit and a delivery unit disposed in contact with the surface of the charging unit, wherein the delivery unit applies a layer of functional materials to the surface of the photoconductive member.Type: ApplicationFiled: June 19, 2013Publication date: December 25, 2014Inventors: YU LIU, Sarah J. Vella, Richard Andrew Klenkler, Johann Junginger
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Patent number: 8913917Abstract: A vibration-assisted bias charge roll cleaning system includes a bias charge roll cleaning member connected to an actuator for causing the cleaning member to vibrate. The actuator is controlled to vibrate according to a predetermined pattern, and at desired frequencies at particular modes. The cleaning member is configured to be movable to a contact-cleaning position and a cleaning member cleaning position at which the cleaning member is separate from the charge roll.Type: GrantFiled: January 22, 2013Date of Patent: December 16, 2014Assignee: Xerox CorporationInventors: Yu Liu, Johann Junginger, Sarah Vella, Nan-xing Hu, Vlad Skorokhod, Greg McGuire
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Publication number: 20140354715Abstract: An imaging apparatus includes an imaging member having a surface, a development component that is not in physical contact with the imaging member, and a power source for generating an electric field between the imaging member surface and the development component. An ink is electrohydrodynamically transferred from the development component to the imaging member surface when the electric field is generated.Type: ApplicationFiled: May 29, 2013Publication date: December 4, 2014Inventors: Yu Liu, Yiliang Wu, Johann Junginger, Ping Liu
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Patent number: 8873997Abstract: A bias charge member is pulsed into contact with a photoreceptor at high frequency as a mean to reduce contamination and wearing on both the bias charge member and photoreceptor.Type: GrantFiled: November 26, 2012Date of Patent: October 28, 2014Assignee: Xerox CorporationInventors: Yu Liu, Johann Junginger, Gaetano J Lavigne, Gregory Mcguire, Vladislav Skorokhod, Nan-Xing Hu