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    Fluid actuators connected to field effect transistors
    1.
    发明授权
    Fluid actuators connected to field effect transistors 有权

    公开(公告)号：US11633949B2

    公开(公告)日：2023-04-25

    申请号：US16973999

    申请日：2018-09-24

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

    Inventor： Eric Martin ,  James R Przybyla ,  Rogelio Cicili

    IPC: B41J2/045 ,  B41J2/14

    Abstract: Examples include a fluidic die. The fluidic die comprises an array of field effect transistors. Connecting members electrically connect at least some of the field effect transistors of the array of field effect transistors, and the field effect transistors of the array are arranged into respective sets of field effect transistors. The fluidic die further comprises a first fluid actuator connected to a first set of field effect transistors having a first number of field effect transistors. The die includes a second fluid actuator connected to a second respective set of field effect transistors having a second number of field effect transistors that is different than the first number of field effect transistors.

    CURRENT LEAKAGE TEST OF A FLUID EJECTION DIE
    5.
    发明申请
    CURRENT LEAKAGE TEST OF A FLUID EJECTION DIE 有权

    公开(公告)号：US20210276321A1

    公开(公告)日：2021-09-09

    申请号：US16317891

    申请日：2016-10-24

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

    Inventor： Daryl E Anderson ,  Eric Martin ,  James Michael Gardner ,  Rogelio Cicili

    IPC: B41J2/045

    Abstract: Example implementations relate to current leakage testing of a fluid ejection die. For example, a fluid ejection die may include plurality of nozzles, each nozzle among the plurality of nozzles including a nozzle sensor and a fluid ejector. The plurality of nozzle sensors may comprise a first subset and a second subset, each nozzle sensor among the plurality of nozzle sensors of the first subset may be electrically coupled to a first control line by a respective switch among a first group of switches, and each nozzle sensor among the plurality of nozzle sensors of the second subset may be electrically coupled to a second control line by a respective switch among a second group of switches. The fluid ejection die may include a control circuit to perform a current leakage test of the plurality of nozzles using the first control line and the second control line.

    FLUID ACTUATORS CONNECTED TO FIELD EFFECT TRANSISTORS
    6.
    发明申请
    FLUID ACTUATORS CONNECTED TO FIELD EFFECT TRANSISTORS 有权

    公开(公告)号：US20210206161A1

    公开(公告)日：2021-07-08

    申请号：US16973999

    申请日：2018-09-24

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

    Inventor： Eric Martin ,  James R Przybyla ,  Rogelio Cicili

    IPC: B41J2/045 ,  B41J2/14

    Abstract: Examples include a fluidic die. The fluidic die comprises an array of field effect transistors. Connecting members electrically connect at least some of the field effect transistors of the array of field effect transistors, and the field effect transistors of the array are arranged into respective sets of field effect transistors. The fluidic die further comprises a first fluid actuator connected to a first set of field effect transistors having a first number of field effect transistors. The die includes a second fluid actuator connected to a second respective set of field effect transistors having a second number of field effect transistors that is different than the first number of field effect transistors.

    Fluidic die sense architecture
    7.
    发明授权
    Fluidic die sense architecture 有权

    公开(公告)号：US10946651B2

    公开(公告)日：2021-03-16

    申请号：US16619341

    申请日：2017-07-20

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

    Inventor： Eric Martin ,  James Gardner ,  Rogelio Cicili

    IPC: B41J2/14 ,  B41J2/045

    Abstract: A fluidic die includes a sense architecture having a global sense block to provide an analog reference signal and an array of distributed sense blocks. Each distributed sense block is to receive a same set of addresses via an address bus and each is to receive a corresponding sense enable signal having an enable value or a disable value. Each distributed sense block includes an array of sensors, each sensor corresponding to a different address of the set of addresses and a sample circuit to apply the analog reference signal to the sensor corresponding to the address on the address bus when the corresponding sense enable signal has the enable value, and provide to the global sense block an analog sense signal from the sensor resulting from application of the analog reference signal.

    PRINTHEAD HIGH SIDE SWITCH CONTROLS
    8.
    发明申请
    PRINTHEAD HIGH SIDE SWITCH CONTROLS 有权

    公开(公告)号：US20220118760A1

    公开(公告)日：2022-04-21

    申请号：US17413687

    申请日：2019-06-19

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

    Inventor： Eric Thomas Martin ,  Rogelio Cicili

    IPC: B41J2/045 ,  H03K3/356 ,  H03K17/687

    Abstract: In example implementations, an apparatus is provided. The apparatus includes a first low voltage control block, a second low voltage control block, a primitive level shifter coupled to the first low voltage control block, a plurality of nozzle level shifters coupled to the primitive level shifter and a second low voltage control block, and a high side switch (HSS) control coupled to each one of the plurality of nozzle level shifters and the second low voltage control block. The plurality of nozzle level shifters are communicatively coupled to each other. The primitive shifter is to enable a selected nozzle level shifter to fire a respective HSS control circuit of the selected nozzle level shifter and to direct a tail current from the selected nozzle level shifter.

    TEMPERATURE SENSING
    9.
    发明申请
    TEMPERATURE SENSING 有权

    公开(公告)号：US20210362492A1

    公开(公告)日：2021-11-25

    申请号：US17058692

    申请日：2018-11-16

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

    Inventor： James Michael Gardner ,  Daryl E. Anderson ,  Eric Thomas Martin ,  Rogelio Cicili

    IPC: B41J2/045 ,  G01K7/01 ,  G01K1/02

    Abstract: Examples of a fluidic die for temperature sensing are described herein. In some examples, a fluidic die may include a plurality of thermal sense modules. In some examples, each of the thermal sense modules includes a diode connected between a first switch and a second switch. In some examples, the fluidic die includes a differential amplifier to output a temperature voltage signal. In some examples, a first input of the differential amplifier is connected to the first switch of each of the thermal sense modules and a second input of the differential amplifier is connected to the second switch of each of the thermal sense modules.

    CONNECTED FIELD EFFECT TRANSISTORS
    10.
    发明申请
    CONNECTED FIELD EFFECT TRANSISTORS 有权

    公开(公告)号：US20210246013A1

    公开(公告)日：2021-08-12

    申请号：US17251236

    申请日：2018-09-24

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

    Inventor： Eric Martin ,  Rogelio Cicili ,  Tsuyoshi Yamashita

    IPC: B81B7/00 ,  B81B3/00 ,  B81B1/00 ,  B81C1/00

    Abstract: Examples include a fluidic die. The fluidic die comprises an array of field effect transistors including field effect transistors of a first size and field effect transistors of a second size. At least one connecting member interconnects at least some of the field effect transistors of the array of field effect transistors. The fluidic die further comprises a first fluid actuator connected to a first set of field effect transistors having at least one field effect transistor of the first size. The die includes a second fluid actuator connected to a second respective set of field effect transistors having a first respective field effect transistor of the second size interconnected to at least one other field effect transistor of the array.

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