Patents by Inventor Alon FROOM
Alon FROOM 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: 11385572Abstract: 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. The assembly may also include a print agent regulator roller to regulate a film thickness of print agent on the print agent transfer roller. The assembly may also include a mechanism to generate an oscillating force to be applied to print agent on the print agent transfer roller. A method and a print apparatus are also disclosed.Type: GrantFiled: September 21, 2017Date of Patent: July 12, 2022Assignee: HP Indigo B.V.Inventors: Shachar Berger, Alon Froom, Sagie Shanun, Oran Levintant
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Patent number: 11340536Abstract: In one example of the disclosure, a developer system includes a housing and a developer roller. A first electrode and a second electrode are disposed in the housing, the first and second electrodes to create an electrical charge to cause transfer of printing fluid to a developer roller surface. The developer roller is rotatably connected to the housing. The developer includes a surface, a bearing to support and enable rotation of an axle attached to the developer roller, and a plurality of stop pins. The plurality of stop pins are connected to the housing. The stop pins are to support the bearings and to establish target distances between the developer roller surface and the first electrode and second electrodes.Type: GrantFiled: February 14, 2018Date of Patent: May 24, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Shachar Berger, Sagie Shanun, Roman Katz, Shai Rahamim, Hay Arbeli, Eyal Elbaz, Alon Froom, Lavi Cohen
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Publication number: 20210364952Abstract: 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. The assembly may also include a print agent regulator roller to regulate a film thickness of print agent on the print agent transfer roller. The assembly may also include a mechanism to generate an oscillating force to be applied to print agent on the print agent transfer roller. A method and a print apparatus are also disclosed.Type: ApplicationFiled: September 21, 2017Publication date: November 25, 2021Inventors: Shachar Berger, Alon Froom, Sagie Shanun, Oran Levintant
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Publication number: 20210325797Abstract: In one example of the disclosure, a developer system includes a housing and a developer roller. A first electrode and a second electrode are disposed in the housing, the first and second electrodes to create an electrical charge to cause transfer of printing fluid to a developer roller surface. The developer roller is rotatably connected to the housing. The developer includes a surface, a bearing to support and enable rotation of an axle attached to the developer roller, and a plurality of stop pins. The plurality of stop pins are connected to the housing. The stop pins are to support the bearings and to establish target distances between the developer roller surface and the first electrode and second electrodes.Type: ApplicationFiled: February 14, 2018Publication date: October 21, 2021Inventors: Shachar Berger, Sagie Shanun, Roman Katz, Shai Rahamim, Hay Arbeli, Eyal Elbaz, Alon Froom, Lavi Cohen
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Publication number: 20210088931Abstract: An example method of controlling the concentration of a printing substance is provided. A layer of printing substance is received on a printing substance receiving member, and a parameter indicative of a current concentration of non-volatile material in the printing substance is measured. The current concentration is compared to a predetermined target concentration. Based on the comparison, a concentration adjustment is determined. The adjustment comprises at least one of (i) an adjustment to a pressure applied to the printing substance receiving member by a pressurizing member, and (ii) an adjustment to a voltage applied to the pressurizing member. The concentration of the printing substance is controlled based on the determination.Type: ApplicationFiled: January 25, 2018Publication date: March 25, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Shachar Berger, Lital Mesika, Alon Froom
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Patent number: 10852667Abstract: In an example, a printing device comprises a component to engage with a surface, a first load sensor, a second load sensor and a controller. The component has a first part which is drivable to engage and disengage with the surface by a first engagement device and a second part which is drivable to engage and disengage with the surface by a second engagement device. The first load sensor is to measure a load on the first engagement device. The second load sensor is to measure a load on the second engagement device. The controller is to receive first load information from the first load sensor and second load information from the second load sensor; and determine whether or not to alter an operational parameter of the printing device, based on the received first load information and the received second load information.Type: GrantFiled: January 26, 2017Date of Patent: December 1, 2020Assignee: HP Indigo B.V.Inventors: Lavi Cohen, Alon Froom, Amit Porat, Asaf Shoshani
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Patent number: 10838325Abstract: Measures for controlling an engagement force between a photo imaging plate and a developer roller in a printing device are described. A motor is operated to generate rotational motion. The rotational motion is translated into linear motion. The linear motion causes an adjustment to the engagement force between the developer roller and the photo imaging plate. A characteristic of the motor is monitored. The motor is controlled on the basis of the monitored characteristic in order to maintain a desired engagement force between the developer roller and the photo imaging plate.Type: GrantFiled: October 15, 2019Date of Patent: November 17, 2020Assignee: HP Indigo B.V.Inventors: Amit Porat, Maty Verner, Alon Froom, Meir Grinstein
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Publication number: 20200050130Abstract: In an example, a printing device comprises a component to engage with a surface, a first load sensor, a second load sensor and a controller. The component has a first part which is drivable to engage and disengage with the surface by a first engagement device and a second part which is drivable to engage and disengage with the surface by a second engagement device. The first load sensor is to measure a load on the first engagement device. The second load sensor is to measure a load on the second engagement device. The controller is to receive first load information from the first load sensor and second load information from the second load sensor; and determine whether or not to alter an operational parameter of the printing device, based on the received first load information and the received second load information.Type: ApplicationFiled: January 26, 2017Publication date: February 13, 2020Applicant: HP Indigo B.V.Inventors: Lavi Cohen, Alon Froom, Amit Porat, Asaf Shoshani
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Publication number: 20200041934Abstract: Measures for controlling an engagement force between a photo imaging plate and a developer roller in a printing device are described. A motor is operated to generate rotational motion. The rotational motion is translated into linear motion. The linear motion causes an adjustment to the engagement force between the developer roller and the photo imaging plate. A characteristic of the motor is monitored. The motor is controlled on the basis of the monitored characteristic in order to maintain a desired engagement force between the developer roller and the photo imaging plate.Type: ApplicationFiled: October 15, 2019Publication date: February 6, 2020Applicant: HP INDIGO B.V.Inventors: Amit Porat, Maty Verner, Alon Froom, Meir Grinstein
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Patent number: 10466625Abstract: Measures for controlling an engagement force between a photo imaging plate (110) and a developer roller (200) in a printing device (100) are described. A motor (310) is operated to generate rotational motion. The rotational motion is translated into linear motion. The linear motion causes an adjustment to the engagement force between the developer roller and the photo imaging plate. A characteristic of the motor is monitored. The motor is controlled on the basis of the monitored characteristic in order to maintain a desired engagement force between the developer roller and the photo imaging plate.Type: GrantFiled: April 28, 2016Date of Patent: November 5, 2019Assignee: HP Indigo B.V.Inventors: Amit Porat, Maty Verner, Alon Froom, Meir Grinstein
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Publication number: 20190033754Abstract: Measures for controlling an engagement force between a photo imaging plate (110) and a developer roller (200) in a printing device (100) are described. A motor (310) is operated to generate rotational motion. The rotational motion is translated into linear motion. The linear motion causes an adjustment to the engagement force between the developer roller and the photo imaging plate. A characteristic of the motor is monitored. The motor is controlled on the basis of the monitored characteristic in order to maintain a desired engagement force between the developer roller and the photo imaging plate.Type: ApplicationFiled: April 29, 2016Publication date: January 31, 2019Applicant: HP INDIGO B.V.Inventors: Amit PORAT, Maty VERNER, Alon FROOM, Meir GRINSTEIN