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    FLUID EJECTION DEVICE
    1.
    发明申请
    FLUID EJECTION DEVICE 审中-公开
    流体喷射装置

    公开(公告)号：WO2018022103A1

    公开(公告)日：2018-02-01

    申请号：PCT/US2016/044831

    申请日：2016-07-29

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

    Inventor： GOVYADINOV, Alexander ,  YAMASHITA, Tsuyoshi ,  MCGUINNESS, Nicholas ,  MARKEL, David P. ,  TORNIAINEN, Erik D

    IPC: B41J2/04 ,  B41J2/175 ,  B41J2/135

    CPC classification number: B41J2/175 ,  B41J2/14032 ,  B41J2002/14403 ,  B41J2002/14467

    Abstract: A fluid ejection device includes a fluid slot, three laterally adjacent fluid ejection chambers each having a drop ejecting element therein, a fluid circulation path communicated with each of the three laterally adjacent fluid ejection chambers, and a fluid circulating element within the fluid circulation path, with at least two laterally adjacent fluid ejection chambers of the three laterally adjacent fluid ejection chambers to substantially simultaneously eject drops of fluid therefrom such that the drops of fluid are to coalesce during flight.

    Abstract translation: 流体喷射装置包括流体槽，三个横向相邻的流体喷射腔室，每个流体喷射腔室中均具有液滴喷射元件，与三个横向相邻的流体喷射腔室中的每一个流体喷射腔室连通的流体循环路径以及流体 在流体循环路径内的循环元件与三个横向相邻的流体喷射室中的至少两个横向相邻的流体喷射室基本上同时地从其喷射液滴，使得液滴在飞行期间聚结。

    RECIRCULATION BYPASS
    2.
    发明申请
    RECIRCULATION BYPASS 审中-公开

    公开(公告)号：WO2021183121A1

    公开(公告)日：2021-09-16

    申请号：PCT/US2020/022034

    申请日：2020-03-11

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

    Inventor： LUM, Jacob M. ,  CHOY, Si-lam J. ,  POLLARD, Jeffrey R. ,  YAMASHITA, Tsuyoshi ,  SELLS, Jeremy ,  CLARK, Garrett E.

    IPC: B41J2/18 ,  B41J2/14

    Abstract: A fluid ejection die may include a fluid actuator, a substrate supporting the fluid actuator, a chamber layer supported by the substrate and a bypass passage in the substrate. The substrate may include a closed inlet channel having an inlet opening for connection to an outlet of a fluid source and an outlet channel having an outlet opening of a first size for connection to an inlet of the fluid source. The chamber layer includes a recirculation passage to supply fluid for ejection by the fluid actuator through an ejection orifice and to circulate fluid across the fluid actuator from the closed inlet channel to the outlet channel. The bypass passage is of a second size less than the first size and connects the inlet channel to the inlet of the fluid source while bypassing any fluid actuator provided for ejecting fluid through an ejection orifice.

    DRIVE BUBBLE EVALUATION
    4.
    发明申请
    DRIVE BUBBLE EVALUATION 审中-公开

    公开(公告)号：WO2018156170A1

    公开(公告)日：2018-08-30

    申请号：PCT/US2017/019772

    申请日：2017-02-27

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

    Inventor： ANDERSON, Daryl E. ,  MARTIN, Eric ,  GARDNER, James Michael ,  YAMASHITA, Tsuyoshi

    IPC: B41J2/05 ,  B41J2/175 ,  B41J2/135

    Abstract: In some examples, a fluid ejection system can include one or more drive bubble devices and a sensor for each drive bubble device of the one or more drive bubble devices to detect a characteristic of each drive bubble device. The fluid ejection system can also include a controller. The controller can be configured to evaluate a first drive bubble device of the one or more drive bubble devices, and during the evaluation of the first drive bubble device, utilize one or more other drive bubble devices of the one or more drive bubble devices.

    UNSUPPORTED TOP HAT LAYERS IN PRINTHEAD DIES
    9.
    发明申请
    UNSUPPORTED TOP HAT LAYERS IN PRINTHEAD DIES 审中-公开

    公开(公告)号：WO2021045782A1

    公开(公告)日：2021-03-11

    申请号：PCT/US2019/050025

    申请日：2019-09-06

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

    Inventor： KORTHUIS, Vincent C. ,  PHAM, Huyen ,  YAMASHITA, Tsuyoshi

    IPC: B41J2/14

    Abstract: In example implementations, a printhead die is provided. The printhead die includes a substrate, a chamber layer formed on the substrate, a plurality of printing fluid ejection chambers coupled to opposite sides of the chamber layer and along a length of the chamber layer, and a top hat layer formed on the chamber layer and the plurality of printing fluid ejection chambers. The chamber layer includes a void to store printing fluid. The top hat layer includes an initial unsupported top hat layer portion over the void, wherein the initial unsupported top hat layer portion comprises a first end that is narrower than a second end.

    FLUID EJECTION DEVICE
    10.
    发明申请
    FLUID EJECTION DEVICE 审中-公开
    流体喷射装置

    公开(公告)号：WO2018022105A1

    公开(公告)日：2018-02-01

    申请号：PCT/US2016/044833

    申请日：2016-07-29

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

    Inventor： MCGUINNESS, Nicholas ,  GOVYADINOV, Alexander ,  YAMASHITA, Tsuyoshi ,  TORNIAINEN, Erik D ,  MARKEL, David P.

    IPC: B41J2/175 ,  B41J2/135

    Abstract: A fluid ejection device includes a fluid slot, two laterally adjacent fluid ejection chambers each having a drop ejecting element therein, a fluid circulation path communicated with the fluid slot and each of the two laterally adjacent fluid ejection chambers, and a fluid circulating element within the fluid circulation path, with the fluid circulating element laterally adjacent at least one of the two laterally adjacent fluid ejection chambers, and the two laterally adjacent fluid ejection chambers to substantially simultaneously eject drops of fluid therefrom such that the drops of fluid are to coalesce during flight.

    Abstract translation: 流体喷射装置包括流体槽，两个横向相邻的流体喷射腔室，每个流体喷射腔室中均具有液滴喷射元件，流体循环路径与流体槽连通，并且两个横向相邻的流体喷射腔室中的每一个 以及流体循环路径内的流体循环元件，其中流体循环元件横向地邻接两个横向相邻的流体喷射室中的至少一个，并且两个横向相邻的流体喷射室基本上同时地从其中喷射液滴，使得 在飞行过程中液滴会聚结。

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