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    FLUID LEVEL SENSING WITH PROTECTIVE MEMBER
    34.
    发明申请
    FLUID LEVEL SENSING WITH PROTECTIVE MEMBER 审中-公开

    公开(公告)号：US20190118540A1

    公开(公告)日：2019-04-25

    申请号：US16092547

    申请日：2016-04-21

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

    Inventor： Chien-Hua Chen ,  Michael W. Cumbie ,  Devin Alexander Mourey

    IPC: B41J2/175 ,  G01F23/24 ,  G01F23/26

    Abstract: A fluid level sensing device includes a substrate (210) and a sensing die (216) cantilevered at one end from the substrate. A number of sensing components (218), preferably thermal or impedance sensing components, are disposed on the sensing die and detect a fluid level in a fluid reservoir. A protective member (208) is also cantilevered at one end from the substrate alongside the sensing die. Electrical interconnects (212) output data collected from the number of sensing components. A number of sensing dies may be provided to lengthen the sensing device, in which case the protective cover extends alongside and parallel to the number of sensing dies.

    DETECTING FLUID LEVELS USING A VARIABLE THRESHOLD VOLTAGE
    35.
    发明申请
    DETECTING FLUID LEVELS USING A VARIABLE THRESHOLD VOLTAGE 审中-公开

    公开(公告)号：US20190111696A1

    公开(公告)日：2019-04-18

    申请号：US16094113

    申请日：2016-04-29

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

    Inventor： Daryl E. Anderson ,  Michael W. Cumbie ,  James Michael Gardner ,  Berkeley Fisher

    IPC: B41J2/175

    Abstract: An example printing cartridge includes a sensing die including a plurality of sensing locations in thermal contact with a fluid container, an on-die controller to select a sensing location of the plurality of sensing locations to activate and to provide a variable threshold voltage, and a voltage comparator to compare a sensed voltage generated at a selected sensing location to the variable threshold voltage, and output time-based information based on the comparison, the time-based information representative of whether a fluid is present at a fluid level associated with the selected sensing location.

    Selecting nozzles
    37.
    发明授权
    Selecting nozzles 有权

    公开(公告)号：US10207497B2

    公开(公告)日：2019-02-19

    申请号：US15986593

    申请日：2018-05-22

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

    Inventor： Michael W. Cumbie ,  Garrett E. Clark ,  Mark H. MacKenzie

    IPC: B41J2/045

    Abstract: Selecting nozzles can include selecting nozzles of a plurality of nozzles to print a portion of a print job based on content of the print job and assigning firing reservations to the selected nozzles, where a total number of the firing reservations assigned to the selected nozzles is comparatively less than a total number of the plurality of nozzles.

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