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13 条记录 (耗时 0.016 秒)

    INSPECTION SYSTEM FOR THREE-DIMENSIONAL PRINTER AND METHODS THEREOF
    1.
    发明公开
    INSPECTION SYSTEM FOR THREE-DIMENSIONAL PRINTER AND METHODS THEREOF 审中-公开

    公开(公告)号：US20240173972A1

    公开(公告)日：2024-05-30

    申请号：US18059643

    申请日：2022-11-29

    申请人： XEROX CORPORATION

    发明人： Peter KNAUSDORF ,  Sakib ZARGAR ,  Joseph C. SHEFLIN ,  Palghat S. RAMESH ,  Collin Alexander LADD ,  Chu-Heng LIU ,  Paul J. McCONVILLE

    IPC分类号： B41J2/045 ,  G06V10/25 ,  G06V10/764 ,  G06V10/82

    CPC分类号： B41J2/0456 ,  G06V10/25 ,  G06V10/764 ,  G06V10/82

    摘要： A printing system and method of inspecting drop ejection in a printing system is disclosed. The method includes capturing an image of each of a plurality of drops of a print material after ejection from an ejector of a printing system, creating a temporally averaged image from each image of the plurality of drops of print material, and classifying one of the plurality of drops of print material based on the temporally averaged image that was created. The use of a pretrained convolutional neural network for classifying one of the plurality of drops and comparing the temporally averaged image to another temporally averaged image to classify one of the plurality of drops may be employed. The printing system also includes a camera with a high-speed shutter where the shutter is synchronized to an ejector pulse, and a video analytic framework coupled to the ejector and the camera configured to generate a jetting result for each of the one or more drops of liquid print material.

    AIRFLOW CONTROL VIA AIRFLOW ZONES IN VACUUM PLENUM OF A PRINTING SYSTEM, AND RELATED DEVICES, SYSTEMS, AND METHODS
    6.
    发明申请
    AIRFLOW CONTROL VIA AIRFLOW ZONES IN VACUUM PLENUM OF A PRINTING SYSTEM, AND RELATED DEVICES, SYSTEMS, AND METHODS 有权

    公开(公告)号：US20220314653A1

    公开(公告)日：2022-10-06

    申请号：US17218887

    申请日：2021-03-31

    申请人： XEROX CORPORATION

    发明人： Chu-Heng LIU ,  Douglas K. HERRMANN ,  Jason M. LeFEVRE ,  Paul J. McCONVILLE ,  Seemit PRAHARAJ

    IPC分类号： B41J11/00

    摘要： A printing system comprises a printhead to eject a print fluid to a deposition region. Print media are held against a movable support surface via vacuum suction, and the movable support surface transports the print media through the deposition region. A vacuum plenum comprises a vacuum platen over which the movable support surface moves. The vacuum platen has platen holes that communicate the vacuum suction from the vacuum plenum to the movable support surface. An airflow restriction mechanism forms a high impedance zone in the vacuum platen, the high impedance zone comprising a subset of the platen holes. The airflow impedance through the high impedance zone is relatively high compared to the airflow impedance through another subset of the platen holes, which are part of a low impedance zone. The high impedance zone may be located near the printhead to reduce airflow through uncovered platen holes near the printhead.

    AIRFLOW CONTROL IN A PRINTING SYSTEM, AND RELATED DEVICES, SYSTEMS, AND METHODS
    7.
    发明申请
    AIRFLOW CONTROL IN A PRINTING SYSTEM, AND RELATED DEVICES, SYSTEMS, AND METHODS 有权

    公开(公告)号：US20220314650A1

    公开(公告)日：2022-10-06

    申请号：US17217466

    申请日：2021-03-30

    申请人： XEROX CORPORATION

    发明人： Seemit PRAHARAJ ,  Douglas K. HERRMANN ,  Jason M. LeFEVRE ,  Chu-Heng LIU ,  Paul J. McCONVILLE

    IPC分类号： B41J11/00

    摘要： A printing system comprises a printhead to eject ink through an opening in a carrier plate to a deposition region. A print medium is held against a movable support surface by vacuum suction communicated through platen holes of a vacuum platen and transported through the deposition region. An airflow control system comprises upstream and downstream valves associated with the printhead, individually addressable channels for the vacuum platen, or both. The upstream and downstream valves are arranged to selectively block and allow airflow through an upstream side or a downstream side, respectively, of the opening in the carrier plate. Actuation of the upstream and downstream valves may be controlled based on a location of the print medium. The channels are arranged to selectively control the supply of vacuum suction to respectively corresponding columns of platen holes. Actuation of the channels may be controlled based on a size of the print medium.

    DEVICES, SYSTEMS, AND METHODS FOR SUPPLYING MAKEUP AIR THROUGH OPENINGS IN CARRIER PLATES OF PRINTING SYSTEM VIA AN AIR GUIDE STRUCTURE
    8.
    发明申请
    DEVICES, SYSTEMS, AND METHODS FOR SUPPLYING MAKEUP AIR THROUGH OPENINGS IN CARRIER PLATES OF PRINTING SYSTEM VIA AN AIR GUIDE STRUCTURE 有权

    公开(公告)号：US20220305817A1

    公开(公告)日：2022-09-29

    申请号：US17216232

    申请日：2021-03-29

    申请人： XEROX CORPORATION

    发明人： Douglas K. HERRMANN ,  Jason M. LeFEVRE ,  Chu-Heng LIU ,  Paul J. McCONVILLE ,  Seemit PRAHARAJ

    IPC分类号： B41J11/00

    摘要： 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 printhead to eject a print fluid through an opening of a 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 to selectively flow air through the opening based on a location of a print medium relative to the printhead. The air supply unit comprises an air guide structure comprising an air outlet portion extending into the opening of the carrier plate between the printhead and the carrier plate, the air outlet portion terminating in an end wall that is angled obliquely relative to the movable support surface towards a reverse-process direction.

    INK SPLITTING MULTI-ROLL CLEANER FOR A VARIABLE DATA LITHOGRAPHY SYSTEM
    9.
    发明申请
    INK SPLITTING MULTI-ROLL CLEANER FOR A VARIABLE DATA LITHOGRAPHY SYSTEM 审中-公开

    公开(公告)号：US20190184698A1

    公开(公告)日：2019-06-20

    申请号：US15847010

    申请日：2017-12-19

    申请人： Xerox Corporation

    发明人： Chu-Heng LIU

    IPC分类号： B41F35/00 ,  B41F7/26

    CPC分类号： B41F35/002 ,  B41F7/26

    摘要： A cleaning subsystem for a variable data lithography system includes a cleaning roller train having a cleaning member in physical contact with an imaging member such that residual ink remaining on the imaging member, such as following transfer of an inked latent image from the imaging member to a substrate, adheres to the cleaning member through cohesion and is thereby removed from the imaging member. The cleaning roller train uses the ink-splitting mechanics to remove, transport and collect the ink waste. The key cleaning roller train is a thin but uniform layer of ink on the cleaning member that contacts the imaging member causing removal on the residual ink through cohesion.

    WATERLESS UV INKJET TRANSFER SYSTEM AND METHOD
    10.
    发明申请
    WATERLESS UV INKJET TRANSFER SYSTEM AND METHOD 审中-公开

    公开(公告)号：US20190143716A1

    公开(公告)日：2019-05-16

    申请号：US16189153

    申请日：2018-11-13

    申请人： XEROX CORPORATION

    发明人： Anthony S. CONDELLO ,  Paul J. McCONVILLE ,  Jack T. LESTRANGE ,  Chu-Heng LIU

    IPC分类号： B41J11/00

    CPC分类号： B41J11/002 ,  B41J2/0057

    摘要： A solid blanket receives a flood layer of very thin (e.g., about 10 μm or less) image receiving UV curable coating, which may be a clear, substantially clear, or tinted UV ink. A lower viscosity digital ink image may then be printed on top of the flood layer, for example by jetting UV ink on top of the flood layer. The lower viscosity UV digital ink sits on top of the thicker UV curable coating and maintains its location by surface tension interaction with the coating. The combination of ink and coating is then partially cured to a tacky state at which point it is transferred to print media via a conformable pressure nip. Since the lower viscosity jetted inks are not responsible for directly wetting the media, media latitude widens greatly. Further, no dampening fluid or fountain solution is needed to aid the transfer or the imaging.