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11.发明公开公开(公告)号：US20240083165A1
公开(公告)日：2024-03-14
申请号：US17932165
申请日：2022-09-14
Applicant: Xerox Corporation
Inventor： Seemit Praharaj , Jason M. LeFevre , Douglas K. Herrmann , Chu-Heng Liu , Jorge A. Alvarez
CPC classification number: B41J2/04558 , B41J2/04586 , G06K15/102 , G06K15/1823 , G06K15/408
Abstract: A method of operating a printer identifies image areas in ink image content data that are likely to affected by airflow disturbances to produce ink blur within an ink image. Inkjets farthest from these areas are selected to eject ink drops into these areas to form portions of an ink image. The image areas identified as being likely to produce ink blur are the leading edge, trailing edge, and side edge of the ink image content data. The ink drops ejected by these selected inkjets and their satellites are less likely to be affected adversely by the airflow disturbances.
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公开(公告)号：US11912045B2
公开(公告)日：2024-02-27
申请号：US17656407
申请日：2022-03-24
Applicant: Xerox Corporation
Inventor： Jason M. LeFevre , Seemit Praharaj , Douglas K. Herrmann , Chu-Heng Liu , Jorge A. Alvarez
IPC: B41J29/393 , B41J2/21
CPC classification number: B41J29/393 , B41J2/2135 , B41J2/2139
Abstract: A method of operating a printer evaluates the effect of printing a print job with two different orientations of the image content data for the print job. The orientation that produces the least increase in the cross-process direction displacement error for the inkjets in the printer is selected for printing the print job. By attenuating the increase in cross-process direction displacement error, the interval between printhead maintenance operations is increased.
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13.发明公开公开(公告)号：US20230309404A1
公开(公告)日：2023-09-28
申请号：US17656404
申请日：2022-03-24
Applicant: Xerox Corporation
Inventor： Douglas K. Herrmann , Jason M. LeFevre , Seemit Praharaj , Chu-Heng Liu , Jorge A. Alvarez
CPC classification number: H01L35/28 , B41J2/04563 , B41J2/04581 , H01L35/12
Abstract: An inkjet printer includes a pair of temperature regulation modules mounted on opposite sides of each printhead in the printer. Each temperature regulation module includes a thermoelectric cooling device that is activated by a controller when the temperature of the printhead exceeds a predetermined setpoint. By cooling the printheads, the temperature of the printheads can be kept in a temperature range that enables fast drying inks to obtain their optimal performance and that prevents duplex printing operations from raising the temperature of the printheads significantly above the predetermined setpoint.
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公开(公告)号：US20230302833A1
公开(公告)日：2023-09-28
申请号：US17656407
申请日：2022-03-24
Applicant: Xerox Corporation
Inventor： Jason M. LeFevre , Seemit Praharaj , Douglas K. Herrmann , Chu-Heng Liu , Jorge A. Alvarez
IPC: B41J29/393 , B41J2/21
CPC classification number: B41J29/393 , B41J2/2139 , B41J2/2135
Abstract: A method of operating a printer evaluates the effect of printing a print job with two different orientations of the image content data for the print job. The orientation that produces the least increase in the cross-process direction displacement error for the inkjets in the printer is selected for printing the print job. By attenuating the increase in cross-process direction displacement error, the interval between printhead maintenance operations is increased.
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公开(公告)号：US10118337B2
公开(公告)日：2018-11-06
申请号：US15173777
申请日：2016-06-06
Applicant: Xerox Corporation
Inventor： William J. Nowak , Jorge A. Alvarez , Robert A. Clark , Michael F. Zona , Chu-heng Liu , Paul J. McConville
IPC: B29C64/165 , B33Y30/00 , B33Y50/02 , B29C64/393 , B29C64/147
Abstract: A 3-D printer includes build and support material development stations that electrostatically transfer build material and support material to an ITB. The ITB transfers a layer of build and support material to a platen each time the platen contacts one of the layers on the ITB, to successively form a freestanding stack of the layers on the platen. A sensor is positioned to generate a topographic measurement of the layer on the platen, and an aerosol applicator is positioned to propel build and support material on to the layer on the platen. The aerosol applicator controls the build and support material being propelled, based on the topographic measurement from the sensor through a feedback loop, to adjust the amount and location of the build material and the support material propelled on to the layer, and thereby control the flatness of surface topology of the layers in the freestanding stack on the platen.
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Patent Agency Ranking
公开(公告)号：US20170348908A1
公开(公告)日：2017-12-07
申请号：US15175476
申请日：2016-06-07
Applicant: Xerox Corporation
Inventor： Chu-heng Liu , Paul J. McConville , William J. Nowak , Michael F. Zona , Robert A. Clark , Jorge A. Alvarez
IPC: B29C64/188 , B29C64/40 , B29K105/00 , B33Y30/00
CPC classification number: B29C64/188 , B29C64/106 , B29C64/20 , B29C64/214 , B29C64/223 , B29C64/393 , B29C64/40 , B29K2105/251 , B29K2995/001 , B33Y10/00 , B33Y30/00 , B33Y50/02 , G03G15/1605 , G03G15/224 , G03G15/225
Abstract: A three-dimensional (3-D) printer includes build and support material development stations positioned to transfer layers of build and support materials to an intermediate transfer surface. A platen having a flat surface is positioned to contact the intermediate transfer surface. The intermediate transfer surface transfers a layer of the build and support materials to the flat surface of the platen as the platen contacts one of the layers on the intermediate transfer surface. A dispenser is positioned to deposit a leveling material on the layer on the platen, and a mechanical planer is positioned to contact and level the leveling material on the layer on the platen to make the top of the leveling material parallel to the flat surface of the platen.
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公开(公告)号：US20170160694A1
公开(公告)日：2017-06-08
申请号：US14958950
申请日：2015-12-04
Applicant: XEROX Corporation
Inventor： William J. NOWAK , Jorge A. Alvarez , Paul J. McConville , Robert A. Clark , Michael F. Zona
IPC: B05D1/36
CPC classification number: G03G15/224 , G03G15/0168
Abstract: A system and method are provided for implementing a unique electrophotographic layered manufacturing scheme for creating higher fidelity electrophotographic composite laminate layers using tri-level electrophotography or electrostatic imaging scheme as a process for rendering individual laminate layers to be built up to form and/or manufacture three-dimensional objects, parts and components as 3D objects. A multi-stage 3D object forming scheme is described involving steps of multi-component laminate forming in a particularized electrophotographic layer forming process. This process renders a part component and a support component precisely next to one another with a single exposure by an exposing device to form a latent image of variable discharge voltages. Multiple toner product sources are used to dispose part component toner and support component toner in the forming of the multi-component laminate layer.
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18.发明申请公开(公告)号：US20250168289A1
公开(公告)日：2025-05-22
申请号：US18959517
申请日：2024-11-25
Applicant: Xerox Corporation
Inventor： Chu-heng Liu , Jorge A. Alvarez , Douglas K. Herrmann , Jason Matthew LeFevre , Seemit Praharaj
Abstract: Methods and systems for securely rendering a security feature with image data to be printed, can involve providing within the image data, data relating to a group of spots, and within the image data, mixing spots of two or more spot sizes among the group of spots to embed information within a stochastic or frequency modulation halftone image. In an embodiment, operations may be implemented for rendering a part of the image with a first spot among the group of spots and a remaining portion of the image with a second spot among the group of spots, wherein the second spot is smaller in size than the first spot.
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公开(公告)号：US11853629B1
公开(公告)日：2023-12-26
申请号：US18050267
申请日：2022-10-27
Applicant: Xerox Corporation
Inventor： Chu-Heng Liu , Jason M. LeFevre , Seemit Praharaj , Jorge A. Alvarez , Douglas K. Herrmann
CPC classification number: G06F3/126 , B41J2/04563 , G06F3/1215
Abstract: A method of operating an inkjet printer identifies a thermal load that will be imposed on the printheads in the inkjet printer during execution of a print job and identifies a remedial action to reduce the thermal load if the thermal load increases the temperature of the printheads above an upper threshold of a predetermined temperature range. The thermal load is identified from the ink image content data for the print job, the print job parameters for the print job, and environmental condition measurements received from sensors in the printer. The remedial actions include manipulation of the print job queue, alteration of print job parameters, and active cooling to remove heat from the printheads or media within the printer.
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公开(公告)号：US11787211B2
公开(公告)日：2023-10-17
申请号：US17690937
申请日：2022-03-09
Applicant: Xerox Corporation
Inventor： Jason M. LeFevre , Douglas K. Herrmann , Seemit Praharaj , Chu-heng Liu , Jorge A. Alvarez
IPC: B41J29/377 , B23Q11/10 , B41F23/04 , B41F13/22 , B41F3/52
CPC classification number: B41J29/377 , B23Q11/10 , B41F3/52 , B41F13/22 , B41F23/04 , B41F23/0476 , B41F23/0483 , B65H2301/5144 , B65H2301/5305 , B65H2404/1361 , B65H2701/528
Abstract: A multi-sheet cooling buffer suitable for use in a printing device and a method of sheet processing with the cooling buffer are described. The cooling buffer includes an inlet and an outlet and a sheet cooling mechanism. An array of cooling stations, intermediate the inlet and the outlet, are each configured to receive print media sheets independently from the inlet and direct cooled sheets towards the outlet. In the cooling buffer, multiple print media sheets are able to be cooled contemporaneously in respective ones of the cooling stations.
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