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    Refill system and method
    1.
    发明授权
    Refill system and method 有权

    公开(公告)号：US12011931B2

    公开(公告)日：2024-06-18

    申请号：US17756544

    申请日：2019-12-11

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

    Inventor： Carlos Chover Lopez ,  Oriol Parera Fiestas ,  Albert Ruzafa Villaret

    IPC: B41J2/175

    CPC classification number: B41J2/17506

    Abstract: A fluid supply device includes a variable fluid volume to contain a supply of fluid and a variable gas volume to receive pressurized gas to pressurize the supply of fluid. A method of monitoring the fluid supply device may include controlling a gas pressure of the pressurized gas to feed the fluid from the fluid volume, the gas pressure varying in a plurality of pressurization cycles; monitoring a parameter of the pressurization cycles; and determining a change in fill state of the fluid volume as a function of the monitored parameter.

    PRINT DEVICE WITH VALVE IN PRINT FLUID SUPPLY PATHWAY
    2.
    发明申请
    PRINT DEVICE WITH VALVE IN PRINT FLUID SUPPLY PATHWAY 审中-公开

    公开(公告)号：US20190070860A1

    公开(公告)日：2019-03-07

    申请号：US15762020

    申请日：2016-01-29

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

    Inventor： Carlos Chover Lopez ,  Emilio Jose Gongora Canada ,  Marta Coma Vives

    IPC: B41J2/175

    Abstract: In one example, there is disclosed a print device 100 comprising: a print fluid supply pathway 102 extending from a reservoir inlet 104 to a printhead outlet 106; a valve 108 in the print fluid supply pathway 102 downstream of the reservoir inlet 104: a pressure sensor 110 to monitor print fluid pressure upstream of the valve 108; a pressure sensor controller 112 to temporarily close the valve 108 for a closed period and monitor print fluid pressure using the pressure sensor 110 during the closed period; and a print operation controller 114 to control printing operations of the print device 100 so that in use a printing operation continues and print fluid is discharged from a printhead 234 during a closed period of the valve 108 in the respective print fluid supply pathway 102.

    REFILL SYSTEM AND METHOD
    4.
    发明申请
    REFILL SYSTEM AND METHOD 有权

    公开(公告)号：US20220410576A1

    公开(公告)日：2022-12-29

    申请号：US17756544

    申请日：2019-12-11

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

    Inventor： Carlos Chover Lopez ,  Oriol Parera Fiestas ,  Albert Ruzafa Villaret

    IPC: B41J2/175

    Abstract: A fluid supply device includes a variable fluid volume to contain a supply of fluid and a variable gas volume to receive pressurized gas to pressurize the supply of fluid. A method of monitoring the fluid supply device may include controlling a gas pressure of the pressurized gas to feed the fluid from the fluid volume, the gas pressure varying in a plurality of pressurization cycles; monitoring a parameter of the pressurization cycles; and determining a change in fill state of the fluid volume as a function of the monitored parameter.

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