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    REPLACEABLE PRINT APPARATUS COMPONENT
    11.
    发明申请
    REPLACEABLE PRINT APPARATUS COMPONENT 有权

    公开(公告)号：US20210240400A1

    公开(公告)日：2021-08-05

    申请号：US16768652

    申请日：2019-12-03

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

    Inventor： Michael W. CUMBIE ,  Scott A. LINN ,  James Michael GARDNER

    IPC: G06F3/12 ,  B41J2/175 ,  G01F23/00 ,  G06F13/42

    Abstract: A replaceable print apparatus component includes a print material reservoir, a print material within the reservoir and a sensing system including an integrated circuit configured to connect to and communicate over a digital bus. The sensing system includes at least one sensor, a digital controller, an analog to digital converter electrically coupled to the digital controller, and a memory array electrically coupled to the digital controller. The digital controller is configured to generate a clock signal for timing operations of the integrated circuit. The operations include initiating the at least one sensor based on values stored in the memory array and generating outputs of the at least one sensor via the analog to digital converter.

    FLUID TESTING
    13.
    发明申请
    FLUID TESTING 有权

    公开(公告)号：US20210170396A1

    公开(公告)日：2021-06-10

    申请号：US16769783

    申请日：2018-01-16

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

    Inventor： Michael W. CUMBIE ,  Hilary ELY ,  Chien-Hua CHEN

    IPC: B01L3/00

    Abstract: A fluid testing device may include a fluid interaction element and a fluid chamber to contain a fluid to be sensed by the fluid interaction element. The fluid chamber may form a first gap through which fluid is to be wicked to a second gap that is opposite the fluid interaction element and less than the first gap.

    INTEGRATED CIRCUITS INCLUDING CUSTOMIZATION BITS
    15.
    发明申请
    INTEGRATED CIRCUITS INCLUDING CUSTOMIZATION BITS 有权

    公开(公告)号：US20210229426A1

    公开(公告)日：2021-07-29

    申请号：US16957517

    申请日：2019-02-06

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

    Inventor： Scott A. LINN ,  James Michael GARDNER ,  Michael W. CUMBIE

    IPC: B41J2/045

    Abstract: An integrated circuit to drive a plurality of fluid actuation devices includes a plurality of first memory cells, a plurality of first storage elements, and control logic. Each first memory cell stores a customization bit. Each first storage element is coupled to a corresponding first memory cell. The control logic, in response to a reset signal, reads the customization bit stored in each first memory cell and latches each customization bit in a corresponding first storage element.

    INTEGRATED CIRCUIT WITH ADDRESS DRIVERS FOR FLUIDIC DIE
    16.
    发明申请
    INTEGRATED CIRCUIT WITH ADDRESS DRIVERS FOR FLUIDIC DIE 有权

    公开(公告)号：US20210221120A1

    公开(公告)日：2021-07-22

    申请号：US16768023

    申请日：2019-02-06

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

    Inventor： Scott A. LINN ,  James Michael GARDNER ,  Michael W. CUMBIE

    IPC: B41J2/045

    Abstract: An integrated circuit for a fluidic die including an address bus to communicate a set of addresses, a first group of die configuration functions including a first address driver to drive a first portion of an address of the set of addresses on the address bus, a second group of die configuration functions including a second address driver to drive a second portion of the address of the set of addresses on the address bus, and an array of fluid actuating devices addressable by the set of addresses communicated via the address bus.

    MICROFLUIDIC DEVICE CHANNEL LAYER
    17.
    发明申请
    MICROFLUIDIC DEVICE CHANNEL LAYER 有权

    公开(公告)号：US20210197199A1

    公开(公告)日：2021-07-01

    申请号：US16076553

    申请日：2017-07-12

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

    Inventor： Viktor SHKOLNIKOV ,  Michael W. CUMBIE ,  Chien-Hua CHEN

    IPC: B01L3/00

    Abstract: A channel layer of a digital microfluidic device may include a number of sample wells located on a first side of the die, a number of first capillary channels fluidically coupled to each of the sample wells, the first capillary channels drawing a fluid from the sample wells using capillary forces, a capillary break fluidically coupled to each of the first capillary channels to dispense a portion of the fluid drawn from the sample wells through the capillary forces, a number of intermediate chambers fluidically coupled to the capillary break, a number of second capillary channels fluidically coupled to the intermediate chambers, the second capillary channels drawing the fluid from the intermediate chambers using capillary forces, and a number of mixing chambers fluidically coupled to the second capillary channels into which the capillary forces of the second capillary channels cause the fluid to enter the mixing chambers.

    COMPLEX IMPEDANCE DETECTION
    20.
    发明申请
    COMPLEX IMPEDANCE DETECTION 审中-公开

    公开(公告)号：US20200331259A1

    公开(公告)日：2020-10-22

    申请号：US16092978

    申请日：2016-07-21

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

    Inventor： Chien-Hua CHEN ,  Michael W. CUMBIE ,  Devin Alexander Mourey

    IPC: B41J2/045 ,  B41J2/125 ,  B41J2/07 ,  G06F3/12

    Abstract: A printhead may include a nozzle, a firing chamber fluidly coupled to the nozzle, a printing fluid slot fluidly coupled to the firing chamber, and a sensor to detect a plurality of complex impedance values of a printing fluid at the printhead over a plurality of frequencies and create a printing fluid signature of the printing fluid. A method of determining at least one characteristic of a printing fluid provided to a printhead ma include, with a number of sensors, applying an alternating current at a plurality of frequencies over time to the printing fluid to receive a plurality of complex impedance values and comparing the plurality of complex impedance signals to a number of stored signals.

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