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    SCAN BAR CALIBRATION
    1.
    发明申请
    SCAN BAR CALIBRATION 审中-公开
    扫描条形码校准

    公开(公告)号：WO2018048417A1

    公开(公告)日：2018-03-15

    申请号：PCT/US2016/051013

    申请日：2016-09-09

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： LIU, Hsue-Yang ,  JUSTEL, Milan Crowley ,  BEHREND, Curtis J.

    IPC: H04N1/04 ,  G06K1/00

    Abstract: Example implementations relate to scan bar calibration. For example, a system for scan bar calibration may include instructions executable by a processing resource to implement a plurality of scanning settings at a scan bar index location of a scanning device. The system may further include instructions to execute a scan bar calibration of a calibration target at the scan bar index location, and generate a scan bar calibration table for the scan bar index location based on the executed scan bar calibration.

    Abstract translation:

    示例实现涉及扫描条校准。 例如，用于扫描条校准的系统可以包括可由处理资源执行的指令，以在扫描设备的扫描条索引位置处实现多个扫描设置。 该系统还可以包括用于在扫描条索引位置处执行校准目标的扫描条校准的指令，并且基于所执行的扫描条校准来产生用于扫描条索引位置的扫描条校准表。

    CALIBRATION TARGET SHIFT COMPENSATION
    2.
    发明申请
    CALIBRATION TARGET SHIFT COMPENSATION 审中-公开

    公开(公告)号：WO2019022702A1

    公开(公告)日：2019-01-31

    申请号：PCT/US2017/043493

    申请日：2017-07-24

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： LIU, Hsue-Yang

    IPC: B41J2/155 ,  B41J29/393 ,  G12B13/00

    CPC classification number: H04N1/00002 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/03

    Abstract: According to examples, an apparatus may include a processor and a memory on which is stored machine readable instructions that are to cause the processor to determine a size of a chip gap between a first sensor chip and a second sensor chip, access a model that estimates an amount of positional shift of a target centroid, and apply the determined chip gap size and the accessed model on an image captured using the first sensor chip and the second sensor chip to compensate for an estimated positional shift in a centroid of a calibration target in the captured image by causing a location of the calibration target centroid in the captured image to more accurately correspond to an actual location of the calibration target centroid on an object from which the captured image was captured.

    SKEW SENSOR CALIBRATION
    3.
    发明申请
    SKEW SENSOR CALIBRATION 审中-公开
    偏移传感器校准

    公开(公告)号：WO2017074470A1

    公开(公告)日：2017-05-04

    申请号：PCT/US2015/058514

    申请日：2015-10-30

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： LIU, Hsue-Yang ,  SOSNOWSKI, Luke P. ,  MACKENZIE, Mark H.

    IPC: B41J29/393 ,  B41J29/38

    CPC classification number: B41J29/38 ,  B41J2/175 ,  B41J11/0095

    Abstract: A skew sensor calibration unit including a scanner providing a scanned image of a sheet as the sheet is conveyed along a transport path, the scanned image including a leading edge of the sheet and a skew detection pattern printed thereon by a printhead. A calibration module measures a top skew of the sheet based on position signals from a plurality of skew sensors indicating a position of a leading edge of a sheet as the sheet is conveyed along the transport path, measure an image skew of the sheet relative to the printhead based on the scanned image, and generates a calibration factor that when applied to the measured top skew provides a calibrated top skew that matches the image skew.

    Abstract translation: 包括扫描仪的歪斜传感器校准单元，所述扫描仪在片材沿着传送路径传送时提供片材的扫描图像，所述扫描图像包括片材的前缘和印刷在其上的歪斜检测图案 由打印头。 校准模块基于来自多个偏斜传感器的位置信号来测量片材的顶部歪斜，该位置信号指示片材沿着传送路径传送时片材的前缘的位置，测量片材相对于片材的图像歪斜 基于扫描图像的打印头，并生成校准系数，该系数在应用于测量的顶部歪斜时提供与图像歪斜匹配的校准顶部歪斜。

    PRINTING SYSTEM CALIBRATION USING REFERENCE PRINTING DEVICE
    4.
    发明申请
    PRINTING SYSTEM CALIBRATION USING REFERENCE PRINTING DEVICE 审中-公开

    公开(公告)号：WO2019177583A1

    公开(公告)日：2019-09-19

    申请号：PCT/US2018/022081

    申请日：2018-03-13

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： LOPEZ ALVAREZ, Miguel Angel ,  LIU, Hsue-Yang ,  GONDEK, Jay S.

    IPC: B41J29/393 ,  H04N1/60

    Abstract: Color values are measured for a set of color targets printed by a reference printing device on a medium of a reference media type. A different printing device prints a subset of the set of color targets on another medium of this reference media type. The color values of the subset of color targets printed by the different printing device are measured, and the different device calibrated based on the measured color values for both the set that the reference printing device printed and the subset that the different device printed. The different printing device can then also be calibrated for a different media type, based on a transformation of the set of color targets printed by the reference printing device on a medium of the different media type relative to the set of color targets printed by the reference device on the medium of the reference media type.

    PRINT BAR SPACING CALIBRATIONS
    7.
    发明申请
    PRINT BAR SPACING CALIBRATIONS 审中-公开

    公开(公告)号：WO2021015775A1

    公开(公告)日：2021-01-28

    申请号：PCT/US2019/043358

    申请日：2019-07-25

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： LIU, Hsue-Yang

    IPC: B41J25/308 ,  B41J29/38

    Abstract: In one example, a printing device can include a print zone that includes a print head and a print media area, wherein the print zone includes a paper to print head spacing (PPS) that corresponds to a distance between the print head and the print media area, and a computing device that includes instructions to determine a first print quality of an image on a print medium utilizing a first PPS value, and alter the first PPS value to a second PPS value based on the first print quality.

    DIE ALIGNMENT WITH INDEXING SCANBAR
    8.
    发明申请
    DIE ALIGNMENT WITH INDEXING SCANBAR 审中-公开
    带有索引SCANBAR的模具对齐

    公开(公告)号：WO2017086978A1

    公开(公告)日：2017-05-26

    申请号：PCT/US2015/061595

    申请日：2015-11-19

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： LIU, Hsue-Yang ,  SHEPHERD, Matthew A. ,  MACKENZIE, Mark H.

    IPC: B41J29/393 ,  B41J2/155 ,  G01B11/04

    CPC classification number: B41J2/155 ,  B41J2/175 ,  B41J29/38 ,  B41J29/393 ,  B41J2029/3935

    Abstract: A method including printing a calibration pattern with a wide array printhead having a plurality of printhead dies. The method includes scanning the calibration pattern with a scanbar having a width less than a width of the wide array printhead by indexing the scanbar to a plurality of selected positions across a width of the calibration pattern and providing a scanned calibration image at each selected position, the calibration images together providing a scan of the full width of the calibration pattern, and measuring alignment between successive printhead dies based on the calibration images.

    Abstract translation: 包括用具有多个打印头模具的宽阵列打印头打印校准图案的方法。 该方法包括：通过将扫描条跨过校准图案的宽度索引到多个选定位置并在每个选定位置提供扫描校准图像，利用宽度小于宽阵列打印头的宽度的扫描条扫描校准图案， 校准图像一起提供对校准图案的全宽度的扫描，并且基于校准图像测量连续的打印头芯片之间的对准。

    INK MODULATION FOR NOZZLES
    9.
    发明申请
    INK MODULATION FOR NOZZLES 审中-公开
    墨水调色剂

    公开(公告)号：WO2015156770A1

    公开(公告)日：2015-10-15

    申请号：PCT/US2014/033251

    申请日：2014-04-08

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： SHEPHERD, Matthew, A. ,  LIU, Hsue-Yang

    IPC: B41J2/135

    CPC classification number: B41J2/04593 ,  B41J2/0451 ,  B41J2/04573 ,  B41J2/0458 ,  B41J2/04586 ,  B41J2/155 ,  B41J2/2139 ,  B41J2/2146

    Abstract: A printer is disclosed. The printer has a print engine that mounts a first printhead and a second printhead adjacent to the first printhead in a staggered line of overlapping printheads. Each printhead has at least one row of nozzles. The blending nozzles in the first printhead overlap with blending nozzles in the second printhead. When printing, the non-overlapping nozzles in the first printhead use a default ink modulation amount and the blending nozzles in both printheads use a scaled ink modulation amount.

    Abstract translation: 公开了一种打印机。 该打印机具有打印引擎，该印刷引擎将第一打印头和第二打印头安置在与第一打印头相邻的交错打印头行中。 每个打印头具有至少一排喷嘴。 第一打印头中的混合喷嘴与第二打印头中的混合喷嘴重叠。 当打印时，第一打印头中不重叠的喷嘴使用默认墨水调制量，并且两个打印头中的混合喷嘴使用缩放的墨水调制量。

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