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    Drop characteristic measurement
    2.
    发明授权
    Drop characteristic measurement 有权

    公开(公告)号：US12076985B2

    公开(公告)日：2024-09-03

    申请号：US18323580

    申请日：2023-05-25

    申请人： Kateeva, Inc.

    发明人： Eashwer Chandra Vidhya Sagar Kollata ,  Timothy Walter Dion ,  Tze Hwei Tseeng

    IPC分类号： B41J2/045 ,  G01B11/28 ,  G02B26/08 ,  G02B27/30

    CPC分类号： B41J2/0456 ,  G01B11/285 ,  G02B26/0883 ,  G02B27/30 ,  B41J2/04581

    摘要： An inkjet printing system with a droplet measurement apparatus is described herein. The droplet measurement apparatus has a light source with a collimating optical system, an imaging device disposed along an optical path of the collimating optical system, and a droplet illumination zone in the optical path of the collimating optical system, the droplet illumination zone having a varying droplet illumination location, wherein the light source, the imaging device, or both are adjustable to place a focal plane of the imaging device at the droplet illumination location. The droplet measurement apparatus is structured to accommodate at least a portion of a dispenser of the printing system within the droplet illumination zone.

    Ejection control using substrate alignment features and print region alignment features
    3.
    发明授权
    Ejection control using substrate alignment features and print region alignment features 有权

    公开(公告)号：US11945219B2

    公开(公告)日：2024-04-02

    申请号：US18179703

    申请日：2023-03-07

    申请人： Kateeva, Inc.

    发明人： Christopher R. Hauf ,  Eli Vronsky ,  Alexander Sou-Kang Ko

    IPC分类号： B41J2/045

    CPC分类号： B41J2/04505 ,  B41J2/04586

    摘要： In a printing method, at least one image of a substrate supported in a printing system is acquired. An actual position of a first alignment feature on the substrate in a frame of reference of the printing system is determined based on the at least one image. Expected positions of second alignment features on the substrate are determined based on the actual position of the first alignment feature. Actual positions of the second alignment features in the frame of reference of the printing system are determined based on the at least one image and the expected positions of the second alignment features. Target positions of print regions on the substrate are determined based on the actual positions of the second alignment features. Ejection of print material onto the substrate in the print regions is controlled based on the target positions of the print regions.

    DROPLET MEASUREMENT USING STROBED LED SOURCE
    4.
    发明公开
    DROPLET MEASUREMENT USING STROBED LED SOURCE 审中-公开

    公开(公告)号：US20240100824A1

    公开(公告)日：2024-03-28

    申请号：US18533983

    申请日：2023-12-08

    申请人： Kateeva, Inc.

    发明人： Jerry Chang

    IPC分类号： B41J2/045 ,  G01N15/02 ,  G01N15/14

    CPC分类号： B41J2/0456 ,  G01N15/0227 ,  G01N15/1463 ,  B41J2202/21 ,  G01N2015/0294 ,  G01N2015/1493 ,  G01N2015/1497

    摘要： Methods and apparatus are described herein for measurement of droplets dispensed from a printhead of an inkjet printer onto a substrate. An inkjet printer described herein comprises a printhead assembly comprising a printhead and an imaging system, the imaging system comprising a camera and a strobed LED source; and a deposition unit for positioning a substrate to receive droplets dispensed from the printhead and for imaging the droplets using the imaging system and the strobed LED source. Methods described herein comprise dispensing droplets of a liquid from a printhead of a printhead assembly of an inkjet printer onto a substrate; positioning the substrate with respect to an imaging system coupled to the printhead assembly, the imaging system comprising a camera and an LED light source; and imaging the droplets on the substrate by relatively scanning the substrate and the imaging system and strobing the LED light source.