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    SENSE MEASUREMENTS FOR FLUIDIC ACTUATORS
    11.
    发明申请
    SENSE MEASUREMENTS FOR FLUIDIC ACTUATORS 有权

    公开(公告)号：US20210016565A1

    公开(公告)日：2021-01-21

    申请号：US16970470

    申请日：2018-04-06

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

    Inventor： Eric T. Martin ,  Daryl E. Anderson ,  James R. Przybyla

    IPC: B41J2/125 ,  B41J2/045

    Abstract: In some examples, a system includes a device support to receive a fluid dispensing device, and a controller to identify, based on data controlling activation of fluidic actuators, a fluidic actuator that is to be activated in a first activation cycle of a group of activation cycles that correspond to activation intervals of respective fluidic actuators of a group of fluidic actuators of the fluid dispensing device, the identified fluidic actuator being part of the group of fluidic actuators. To perform a sense measurement for the identified fluidic actuator, the controller suppresses activation of the identified fluidic actuator in the first activation cycle, and causes activation of the identified fluidic actuator in a sense measurement cycle different from the first activation cycle, the sense measurement cycle being part of the group of activation cycles.

    FLUID LEVEL SENSING INDEPENDENT OF WRITE COMMAND
    12.
    发明申请
    FLUID LEVEL SENSING INDEPENDENT OF WRITE COMMAND 审中-公开

    公开(公告)号：US20200324554A1

    公开(公告)日：2020-10-15

    申请号：US16094601

    申请日：2016-07-14

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

    Inventor： Daryl E. Anderson ,  James Michael Gardner

    IPC: B41J2/175 ,  G01F23/292 ,  G01F23/24 ,  G01F23/00

    Abstract: In one example a fluid level sensing device is described. The device includes a sensing die having a number of fluid level sensors disposed thereon and a number of control devices, each control device corresponding to one of the number of fluid level sensors. A control device includes a comparing device to determine a state of a corresponding fluid level sensor. A state of the fluid level sensor is selected from the group consisting of a fluid state and a no-fluid state. Each control device also includes a non-volatile memory device corresponding to the comparing device to indicate whether the corresponding fluid level sensor is at the fluid state or the no-fluid state. A control device also includes a locking device to irreversibly set the non-volatile memory device to the no-fluid state independent of a write command from a controller.

    FLUID LEVEL SENSORS
    14.
    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.

    NOZZLE CONDITION INDICATION
    15.
    发明申请
    NOZZLE CONDITION INDICATION 审中-公开

    公开(公告)号：US20190023004A1

    公开(公告)日：2019-01-24

    申请号：US16140284

    申请日：2018-09-24

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

    Inventor： Daryl E. Anderson ,  Eric T. Martin ,  Peter James Fricke ,  James Michael Gardner

    IPC: B41J2/045 ,  B41J2/14 ,  B41J2/165

    Abstract: In some examples, a fluid die includes a fluid nozzle, a first latch, a second latch, and a timing circuit comprising a counter and a comparator. The timing circuit is to trigger the first latch, at a first predetermined time instant from an edge of a firing pulse, to store a first test result obtained based on a voltage measured across the fluid nozzle, and trigger the second latch, at a second predetermined time instant from the edge of the firing pulse, to store a second test result obtained based on a voltage measured across the fluid nozzle.

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