公开(公告)号：US11433664B2

公开(公告)日：2022-09-06

申请号：US16770911

申请日：2019-02-06

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

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

IPC: B41J2/045 ,  G11C7/22 ,  G11C16/04 ,  G11C16/12 ,  B41J2/45 ,  B41J2/175

Abstract: In some examples, a fluid dispensing device component includes an input to receive a control signal from the fluid dispensing system, the control signal for activating the fluidic actuators of the fluid dispensing device during a fluidic operation mode. The fluid dispensing device component includes a nonvolatile memory, and a controller to, during a memory write mode, write a first portion of the nonvolatile memory to a first programmed level responsive to the control signal being activated for a first time duration, and write a second portion of the nonvolatile memory to a second programmed level responsive to the control signal being activated for a second time duration different from the first time duration, the second programmed level being different from the first programmed level.

公开(公告)号：US11090942B2

公开(公告)日：2021-08-17

申请号：US16486930

申请日：2017-04-24

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

Inventor： James Gardner ,  Berkeley Fisher ,  Andrew Koll

IPC: B41J2/165

Abstract: A fluid ejection system includes a fluid ejection die, a service station assembly, and a controller. The fluid ejection die includes at least one strain gauge sensor to sense strain. The service station assembly is to service the fluid ejection die. The controller is to receive the sensed strain from the at least one strain gauge sensor during servicing of the fluid ejection die and adjust or stop servicing of the fluid ejection die in response to the sensed strain exceeding a servicing threshold.

公开(公告)号：US20210221123A1

公开(公告)日：2021-07-22

申请号：US16770911

申请日：2019-02-06

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

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

IPC: B41J2/045 ,  G11C16/12

Abstract: In some examples, a fluid dispensing device component includes an input to receive a control signal from the fluid dispensing system, the control signal for activating the fluidic actuators of the fluid dispensing device during a fluidic operation mode. The fluid dispensing device component includes a nonvolatile memory, and a controller to, during a memory write mode, write a first portion of the nonvolatile memory to a first programmed level responsive to the control signal being activated for a first time duration, and write a second portion of the nonvolatile memory to a second programmed level responsive to the control signal being activated for a second time duration different from the first time duration, the second programmed level being different from the first programmed level.

公开(公告)号：US10940694B2

公开(公告)日：2021-03-09

申请号：US16094113

申请日：2016-04-29

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

Inventor： Daryl E. Anderson ,  Michael W. Cumbie ,  James Michael Gardner ,  Berkeley Fisher

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

Abstract: An example printing cartridge includes a sensing die including a plurality of sensing locations in thermal contact with a fluid container, an on-die controller to select a sensing location of the plurality of sensing locations to activate and to provide a variable threshold voltage, and a voltage comparator to compare a sensed voltage generated at a selected sensing location to the variable threshold voltage, and output time-based information based on the comparison, the time-based information representative of whether a fluid is present at a fluid level associated with the selected sensing location.

公开(公告)号：US20210224005A1

公开(公告)日：2021-07-22

申请号：US16769765

申请日：2019-02-06

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

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

IPC: G06F3/12 ,  G11C16/12 ,  G11C16/10 ,  G11C16/34

Abstract: In some examples, a fluid dispensing device component includes an input to receive a control signal from the fluid dispensing system, the control signal for activating fluidic actuators during a fluidic operation mode. The fluid dispensing device component further includes a nonvolatile memory, and a controller to, during a memory write mode, write a first portion of the nonvolatile memory to a first programmed level responsive to application of a first programming voltage and activation of the control signal, and write a second portion of the nonvolatile memory to a second programmed level responsive to application of a second programming voltage different from the first programming voltage and activation of the control signal.

公开(公告)号：US20210129540A1

公开(公告)日：2021-05-06

申请号：US16486930

申请日：2017-04-24

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

Inventor： James Gardner ,  Berkeley Fisher ,  Andrew Koll

IPC: B41J2/165

Abstract: A fluid ejection system includes a fluid ejection die, a service station assembly, and a controller. The fluid ejection die includes at least one strain gauge sensor to sense strain. The service station assembly is to service the fluid ejection die. The controller is to receive the sensed strain from the at least one strain gauge sensor during servicing of the fluid ejection die and adjust or stop servicing of the fluid ejection die in response to the sensed strain exceeding a servicing threshold.

公开(公告)号：US10926548B2

公开(公告)日：2021-02-23

申请号：US16094138

申请日：2016-04-29

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

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

IPC: B41J29/393 ,  B41J2/175

Abstract: An example printing cartridge includes a fluid container, a plurality of capacitor plates to detect fluid in the fluid container, each of the capacitor plates associated with a respective fluid level, and a shift register to capture fluid level information from the plurality of capacitor plates.

公开(公告)号：US10926537B2

公开(公告)日：2021-02-23

申请号：US16490842

申请日：2017-04-24

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

Inventor： James M Gardner ,  Berkeley Fisher ,  Daryl E Anderson

IPC: B41J2/14

Abstract: A fluidic die may include a substrate having a flexible region opposite a fluid supply passage within the substrate, a nozzle supported by the substrate proximate the flexible region and a strain sensor on the flexible region of the substrate. The strain sensor may sense strain during flexing of the flexible region to sense fluid back pressure changes.

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.

公开(公告)号：US11712887B2

公开(公告)日：2023-08-01

申请号：US17105195

申请日：2020-11-25

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

Inventor： James M. Gardner ,  Berkeley Fisher ,  Daryl E Anderson

IPC: B41J2/045 ,  B41J2/14 ,  B41J29/393 ,  G01L1/18 ,  G01L1/22

CPC classification number: B41J2/04563 ,  B41J2/04508 ,  B41J2/04586 ,  B41J2/14153 ,  B41J29/393 ,  G01L1/18 ,  G01L1/22

Abstract: A die may include a plurality of fluid pumps, at least one strain gauge sensor to sense a strain in the die, and at least one temperature sensor to sense the temperature of the die to compensate for a temperature component of the sensed strain.