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    DETERMINING REFLECTED LIGHT INTENSITIES OF LIGHT SOURCES
    11.
    发明申请
    DETERMINING REFLECTED LIGHT INTENSITIES OF LIGHT SOURCES 有权

    公开(公告)号：US20210162769A1

    公开(公告)日：2021-06-03

    申请号：US17047334

    申请日：2018-05-16

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

    Inventor： Manuel Agudo Acemel ,  Andreas Muller ,  Xavier Quintero Ruiz

    IPC: B41J2/21 ,  B41J29/393 ,  G01N21/55

    Abstract: The method may comprise depositing print agent of a particular color onto a printable substrate to form a patch of print agent. It may comprise directing radiation from a plurality of radiation sources onto the patch of print agent and onto the printable substrate. Also, may comprise detecting, using a sensor, radiation from the plurality of radiation sources which has been reflected from the printable substrate and radiation from the plurality of radiation sources which has been reflected from the patch of print agent. Further, may comprise measuring, for each of the plurality of radiation sources, an intensity of the radiation reflected from the printable substrate and an intensity of the radiation reflected from the patch of print agent. Also, may comprise selecting, based on the measured intensities, a radiation source of the sources to be associated with the print agent of the particular color.

    Determining reflected light intensities of light sources
    15.
    发明授权
    Determining reflected light intensities of light sources 有权

    公开(公告)号：US11285733B2

    公开(公告)日：2022-03-29

    申请号：US17047334

    申请日：2018-05-16

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

    Inventor： Manuel Agudo Acemel ,  Andreas Muller ,  Xavier Quintero Ruiz

    IPC: B41J2/21 ,  B41J29/393 ,  G01N21/55

    Abstract: The method may comprise depositing print agent of a particular color onto a printable substrate to form a patch of print agent. It may comprise directing radiation from a plurality of radiation sources onto the patch of print agent and onto the printable substrate. Also, may comprise detecting, using a sensor, radiation from the plurality of radiation sources which has been reflected from the printable substrate and radiation from the plurality of radiation sources which has been reflected from the patch of print agent. Further, may comprise measuring, for each of the plurality of radiation sources, an intensity of the radiation reflected from the printable substrate and an intensity of the radiation reflected from the patch of print agent. Also, may comprise selecting, based on the measured intensities, a radiation source of the sources to be associated with the print agent of the particular color.

    Controlling advance of print media to deliver printing fluid from plural columns of nozzles
    17.
    发明授权
    Controlling advance of print media to deliver printing fluid from plural columns of nozzles 有权

    公开(公告)号：US10105947B2

    公开(公告)日：2018-10-23

    申请号：US15491789

    申请日：2017-04-19

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

    Inventor： Andreas Muller ,  Utpal Kumar Sarkar

    IPC: B41J2/045 ,  G06K15/10

    Abstract: In some examples, a printing system includes a printhead comprising a nozzle array including plural columns of nozzles to deliver printing fluid to a print medium, wherein nozzles in a first column of the columns are offset from nozzles in a second column of the columns. A controller is to control printing onto the print medium using the printhead by, for each respective pass of a plurality of passes of the printhead over the print medium, controlling an advance of the print medium for a print mask pattern that controls firing of the nozzles of the printhead, where the controlled advance of the print medium causes nozzles from different columns of nozzles of the nozzle array to deliver dots of printing fluid to a given row of a swath in successive passes of the plurality of passes.

    Introducing grain patterns into images
    18.
    发明授权
    Introducing grain patterns into images 有权

    公开(公告)号：US09656466B1

    公开(公告)日：2017-05-23

    申请号：US15223157

    申请日：2016-07-29

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

    Inventor： Andreas Muller ,  Utpal Kumar Sarkar

    IPC: B41J2/21 ,  G06K15/10 ,  B41J2/045

    CPC classification number: B41J2/04508 ,  B41J2/04586 ,  B41J2/2132 ,  G06K15/107

    Abstract: In some examples, a printing system includes a printhead comprising a nozzle array including plural columns of nozzles to deliver printing fluid to a print medium, wherein nozzles in a first column of the columns are offset from nozzles in a second column of the columns. A controller is to cause introduction of a grain pattern into an image printed using the printhead onto the print medium by, for each respective pass of a plurality of passes of the printhead over the print medium, controlling an advance of the print medium by an uneven advance step for a print mask pattern that controls firing of the nozzles of the printhead, where the advance of the print medium by the uneven advance step causes an irregular pattern of firing of the nozzles of the printhead in successive passes of the plurality of passes.

    Method and Apparatus for Print Control
    19.
    发明申请
    Method and Apparatus for Print Control 有权
    打印控制方法与装置

    公开(公告)号：US20160129715A1

    公开(公告)日：2016-05-12

    申请号：US14983043

    申请日：2015-12-29

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Andreas Muller ,  Jacint Humet Pous

    IPC: B41J29/393 ,  B41J2/21

    CPC classification number: B41J11/002 ,  B41J2/21 ,  B41J13/0009 ,  B41J29/393 ,  H04N1/54 ,  H04N1/6019 ,  H04N1/6033 ,  H04N1/6038 ,  H04N1/605

    Abstract: Embodiments of the present invention provide a method for use in a printing device, comprising outputting a test chart comprising a plurality of printed regions at respective ink densities, receiving an indication of a selected ink density, and determining one or more resources of the printing device according to the selected ink density to control one or more ink limits and a colour separation of the printing device.

    Abstract translation: 本发明的实施例提供一种在打印装置中使用的方法，包括：输出包含多个印刷区域的测试图，所述印刷区域各自具有墨密度，接收所选墨水密度的指示，以及确定所述打印装置的一个或多个资源 根据所选择的油墨浓度来控制打印装置的一个或多个油墨限制和颜色分离。

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