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    Fluidic die
    71.
    发明授权
    Fluidic die 有权

    公开(公告)号：US10589522B2

    公开(公告)日：2020-03-17

    申请号：US15948565

    申请日：2018-04-09

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

    Inventor： Scott A. Linn ,  George H. Corrigan, III ,  Michael W. Cumbie

    IPC: B41J2/045 ,  B41J2/14 ,  B41J2/21

    Abstract: A fluidic die may include a number of actuators. The number of actuators form a number of primitives. The fluidic die may include a digital-to-analog converter (DAC) to drive a number of the delay circuits. The delay circuits delay a number of activation pulses that activate the actuators associated with the primitives to reduce peak power demands of the fluidic die. A number of delay circuits may be coupled to each primitive.

    FLUID LEVEL SENSORS
    72.
    发明申请
    FLUID LEVEL SENSORS 审中-公开

    公开(公告)号：US20190126632A1

    公开(公告)日：2019-05-02

    申请号：US16094638

    申请日：2016-07-19

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

    Inventor： Daryl E. Anderson ,  James Michael Gardner ,  Berkeley Fisher ,  Scott A. Linn

    IPC: B41J2/175 ,  G01F23/00

    Abstract: In one example, a fluid level sensor includes control logic, and an array of sensing locations to detect a level of fluid in a container. The array of sensing locations include a number of memory cells located at a number of sensing locations in the array of sensing locations, a word line coupled to the memory cells, a bit line coupled to the memory cells, and a pre-charge circuit coupled to the word line and the bit line. The control logic instructs a number FETs coupled to a bit line to disconnect from a number of the memory cells, and power up the memory cells to cause the memory cells to take a first state or a second state. The control logic outputs the state of the memory cells to a Pre-charge processing device. The state of the memory cells defines the level of the fluid in the container.

    FLUIDIC DIE
    73.
    发明申请
    FLUIDIC DIE 审中-公开

    公开(公告)号：US20190016127A1

    公开(公告)日：2019-01-17

    申请号：US15948565

    申请日：2018-04-09

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

    Inventor： Scott A. Linn ,  George H. Corrigan III ,  Michael W. Cumbie

    IPC: B41J2/045 ,  B41J2/14 ,  B41J2/21

    Abstract: A fluidic die may include a number of actuators. The number of actuators form a number of primitives. The fluidic die may include a digital-to-analog converter (DAC) to drive a number of the delay circuits. The delay circuits delay a number of activation pulses that activate the actuators associated with the primitives to reduce peak power demands of the fluidic die. A number of delay circuits may be coupled to each primitive.

    Pulldown devices
    78.
    发明授权
    Pulldown devices 有权

    公开(公告)号：US11780223B2

    公开(公告)日：2023-10-10

    申请号：US17868164

    申请日：2022-07-19

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

    Inventor： James Michael Gardner ,  John Rossi ,  Scott A. Linn

    IPC: B41J2/045

    CPC classification number: B41J2/04541 ,  B41J2/04586

    Abstract: An integrated circuit to drive a plurality of fluid actuation devices includes a plurality of contact pads, a plurality of pulldown devices, and control logic. The plurality of contact pads include a first contact pad and a second contact pad. Each of the pulldown devices is electrically coupled to a corresponding contact pad. The control logic enables at least a portion of the pulldown devices in response to both a logic low signal on the first contact pad and a logic low signal on the second contact pad.

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