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公开(公告)号：US11900588B2
公开(公告)日：2024-02-13
申请号：US17336729
申请日：2021-06-02
Applicant: Xerox Corporation
Inventor： Joseph C. Sheflin , Jack T. Lestrange , Palghat S. Ramesh
CPC classification number: G06T7/001 , G01J5/00 , G03F7/7085 , G03F7/70516 , G01J2005/0077 , G06T2207/20081 , G06T2207/20084 , G06T2207/30144
Abstract: An image based correction system compensates for the image quality artifacts induced by thermal ghosting on evolving imaging member surfaces. With thermal ghosting directly tied to previous image content, a feed forward system determines thermal ghosting artifacts based on images previously rendered and generates an open loop gray-level correction to a current image that mitigates undesirable ghosting. For example, the correction system compensates for the thermal ghosting by making the current image “lighter” in areas that will be imaged onto warmer blanket regions, thereby cancelling out TRC differences between different temperature regions. A temperature sensor is used to measure the temperature of the imaging blanket due to the stresses induced by the image. This data is used to learn the parameters of the temperature model periodically during operation, and used in subsequent corrections to mitigate thermal ghosting in spite of changes in blanket properties over use and time.
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2.发明授权公开(公告)号：US11577503B2
公开(公告)日：2023-02-14
申请号：US17177262
申请日：2021-02-17
Applicant: Xerox Corporation
Inventor： Jack T. Lestrange , Joseph C. Sheflin , Palghat S. Ramesh , Anthony S. Condello , Brian M. Balthasar , Seemit Praharaj , Chu-heng Liu , Paul J. Mcconville , Douglas K. Herrmann , Jason M. Lefevre
Abstract: A drag force sensor on a fountain solution carrier roller surface measures drag force of a fountain solution layer on the fountain solution carrier roller surface in real-time during a printing operation. The measured drag force is used in a feedback loop to actively control the fountain solution layer thickness by adjusting the volumetric feed rate of fountain solution added onto the imaging member surface during a printing operation to reach a desired uniform thickness for the printing. This fountain solution monitoring system may be fully automated.
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公开(公告)号：US08814305B2
公开(公告)日：2014-08-26
申请号：US13685315
申请日：2012-11-26
Applicant: Xerox Corporation
Inventor： Howard A. Mizes , Joseph C. Sheflin , Michael J. Levy , Charles D. Rizzolo , Stuart A. Schweid
IPC: B41J29/393 , B41J2/07
CPC classification number: B41J2/07 , B41J2/2146 , B41J11/0065
Abstract: A method of operating a printer includes identifying a region of a print medium located between marks formed by a first plurality of inkjets in the printer and an edge of the print medium. The printer activates a second plurality of inkjets to print ink drops into the region during a printing operation. The method enables full-bleed or near full-bleed printing for different media sizes.
Abstract translation: 一种操作打印机的方法包括识别位于由打印机中的第一多个喷墨喷嘴形成的标记和打印介质的边缘之间的打印介质的区域。 打印机激活第二多个喷墨打印头，以在打印操作期间将墨滴打印到该区域中。 该方法可以实现不同介质尺寸的全渗或近全渗。
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公开(公告)号：US20140139851A1
公开(公告)日：2014-05-22
申请号：US13680579
申请日：2012-11-19
Applicant: XEROX CORPORATION
Inventor： Howard A. Mizes , Michael J. Levy , Joseph C. Sheflin
IPC: G06K15/02
CPC classification number: G06K15/02 , B41J29/393 , B41J2029/3935
Abstract: A method of operating a printer to detect errors in an optical sensor includes forming a printed line across a first side of a print medium and generating first image data corresponding to the printed line with the optical sensor. The optical sensor generates second image data of the second side of the print medium as the print medium passes the optical sensor a second time. A detect in the optical sensor is identified with reference to a difference between process direction alignments of the line in the first image data and the second image data.
Abstract translation: 操作打印机以检测光学传感器中的错误的方法包括在打印介质的第一侧上形成印刷线，并用光学传感器产生与印刷线对应的第一图像数据。 当打印介质第二次通过光学传感器时，光学传感器产生打印介质第二面的第二图像数据。 参考第一图像数据中的线的处理方向对齐与第二图像数据之间的差异来识别光学传感器中的检测。
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公开(公告)号：US11884086B2
公开(公告)日：2024-01-30
申请号：US17648731
申请日：2022-01-24
Applicant: Xerox Corporation
Inventor： Palghat S. Ramesh , Jack T. LeStrange , Anthony S. Condello , Joseph C. Sheflin , Peter Knausdorf
IPC: B41J11/02 , B41J29/393
CPC classification number: B41J29/393 , B41J11/02
Abstract: A color inkjet printer includes an electrode that emits an electric field into a gap between a printhead and a media transport that carries media past the printhead. Image data generated by an optical sensor after an ink image is printed on the media is analyzed to measure at least one image quality metric. When the measured image quality metric is outside of a tolerance range, the voltage of a voltage source electrically connected to the electrode is adjusted to improve the wetting of the media type with the ink ejected by the printhead.
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Patent Agency Ranking
公开(公告)号：US11850842B2
公开(公告)日：2023-12-26
申请号：US17216261
申请日：2021-03-29
Applicant: XEROX CORPORATION
Inventor： Patrick Jun Howe , John Patrick Baker , Brian M. Balthasar , Glenn Batchelor , Anthony Salvatore Condello , Ali R. Dergham , Timothy P. Foley , Douglas K. Herrmann , Richard A. Kalb , Peter John Knausdorf , Jason M. LeFevre , Jack T. Lestrange , Chu-Heng Liu , Paul J. McConville , Seemit Praharaj , Palghat S. Ramesh , Joseph C. Sheflin , Emmett James Spence , Robert Jian Zhang , Megan Zielenski
CPC classification number: B41J11/0085 , B41J2/01 , B41J11/007
Abstract: A printing system comprises a print fluid deposition assembly, a media transport device, and an air flow control system. The print fluid deposition assembly comprises a carrier plate and a printhead arranged to eject a print fluid through an opening of the carrier plate to a deposition region. The media transport device holds a print medium against the movable support surface by vacuum suction and transports the print medium through the deposition region. The air flow control system comprises an air supply unit comprising air flow guide structure extending into the opening of the carrier plate between the carrier plate and the printhead to flow air through the opening. The air flow control system controls the air supply unit to selectively flow the air based on a location of a print medium relative to the printhead.
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公开(公告)号：US11839916B2
公开(公告)日：2023-12-12
申请号：US17648490
申请日：2022-01-20
Applicant: Xerox Corporation
Inventor： Viktor Sukhotskiy , Joseph C. Sheflin , Brian M. Balthasar , Peter Knausdorf , Chu-Heng Liu
Abstract: A three-dimensional (3D) metal object manufacturing apparatus is equipped with an orifice cleaning system that removes metal drops that have adhered to a plate, an orifice in the plate, and a nozzle ejecting melted metal drops through the orifice during object forming operations. The orifice cleaning system includes an orifice cleaning tool that consists essentially of a soft carbon material, such as graphite. The orifice cleaning tool is configured with a handle that is gripped by an articulated arm to move the orifice cleaning tool against the plate, the orifice, and a portion of the nozzle at the orifice.
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公开(公告)号：US20230083713A1
公开(公告)日：2023-03-16
申请号：US17477417
申请日：2021-09-16
Applicant: Xerox Corporation
Inventor： Peter Knausdorf , Jack T. Lestrange , Palghat S. Ramesh , Joseph C. Sheflin , Anthony S. Condello
Abstract: An MFD is disclosed. For example, the MFD includes a printhead to dispense print material, an enhancement printhead to dispense an enhancement printing fluid, a processor and a non-transitory computer-readable medium storing a plurality of instructions. The instructions when executed by the processor cause the processor to perform operations that include determining that an automated enhancement feature was selected, analyzing each pixel of an image to be printed to determine one or more pixels that are to receive the enhancement printing fluid, controlling the printhead to print the image, and controlling the enhancement printhead to dispense the enhancement printing fluid on the one or more pixels that are to receive the enhancement printing fluid.
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公开(公告)号：US11148414B1
公开(公告)日：2021-10-19
申请号：US16923796
申请日：2020-07-08
Applicant: Xerox Corporation
Inventor： Jack T. Lestrange , Palghat S. Ramesh , Joseph C. Sheflin
IPC: B41J2/045
Abstract: An image based correction system compensates for the image quality artifacts induced by thermal ghosting. With thermal ghosting directly tied to previous image content, a feed forward control system predicts the thermal ghosting artifact based on the images previous printed and generates an open loop, 2-D correction to the gray-level image that mitigates the undesirable ghosting artifacts. For example, the correction system compensates for the thermal ghosting by making the current digital image “lighter” in areas that will be imaged onto warmer blanket regions, thereby cancelling out TRC differences between different temperature regions.
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公开(公告)号：US20140146329A1
公开(公告)日：2014-05-29
申请号：US13689283
申请日：2012-11-29
Applicant: XEROX CORPORATION
Inventor： Howard A. Mizes , Michael C. Mongeon , Michael J. Severn , Joseph C. Sheflin , Michael J. Levy
IPC: G06K15/02
CPC classification number: G06K15/02 , B41J11/008 , B41J15/04 , G06K15/022
Abstract: A method for printing on a continuous print medium having a plurality of pages includes identifying a location of a feature in image data that are generated from a portion of a first page in the print medium. The method includes modifying a time of operation of a marking unit to form an image on each page in the plurality of pages at a predetermined distance from the edge of each page with reference to the location of the identified feature in the image data. In one configuration, the method enables precise placement of printed images over preprinted forms.
Abstract translation: 一种用于在具有多个页面的连续打印介质上进行打印的方法包括识别从打印介质中的第一页的一部分生成的图像数据中的特征的位置。 该方法包括修改标记单元的操作时间，以参考图像数据中所识别的特征的位置，在距每个页边缘预定距离的多个页面中的每页上形成图像。 在一种配置中，该方法能够在预印形式上精确地放置打印图像。
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