公开(公告)号：US11318752B2

公开(公告)日：2022-05-03

申请号：US16769922

申请日：2019-10-25

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

Inventor： James Michael Gardner ,  Scott A. Linn

IPC: B41J2/175 ,  B41J2/045 ,  G05B19/042 ,  G05B19/00

Abstract: A logic circuitry package for a replaceable print apparatus component includes an analog sensor cell block with a plurality of sensor cells, analog control circuitry to bias and control the analog sensor cell block, an interface to communicate with a print apparatus logic circuit, a dedicated bit field that indicates whether the logic circuitry package is in a power saving mode, and at least one logic circuit. The at least one logic circuit may be configured to receive, via the interface, a request to cause the analog sensor cell block to provide sensor information for at least one sensor measurement; and selectively enable and disable power to the analog control circuitry based on the request and a value of the dedicated bit field.

公开(公告)号：US20220032612A1

公开(公告)日：2022-02-03

申请号：US17471844

申请日：2021-09-10

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

Inventor： Scott A. Linn ,  James Michael Gardner ,  Michael C. Cumbie

IPC: B41J2/045

Abstract: A fluid ejection device includes a plurality of fluid actuation devices, a plurality of memory cells, and a configuration register. Each memory cell of the plurality of memory cells corresponds to a fluid actuation device of the plurality of fluid actuation devices. The configuration register stores data to enable or disable access to the plurality of memory cells.

公开(公告)号：US20210402761A1

公开(公告)日：2021-12-30

申请号：US17045520

申请日：2018-06-11

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

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

IPC: B41J2/045

Abstract: In one example in accordance with the present disclosure, a fluidic die is described. The fluidic die includes a number of zones. Each zone includes a number of sets of fluidic devices. Each fluidic device includes a fluid chamber and a fluid actuator disposed in the chamber. Each fluidic device also includes a sensor to sense a characteristic of the zone and an adjustment device. The adjustment device 1) delays a firing signal received from a previous zone as it passes by each set of fluidic devices and 2) adjusts the firing signal as it enters the zone based on a sensed characteristic.

公开(公告)号：US20210370671A1

公开(公告)日：2021-12-02

申请号：US16956709

申请日：2019-02-06

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

Inventor： James Michael Gardner ,  Anthony M. Fuller ,  Scott A. Linn

IPC: B41J2/045

Abstract: A die for a printhead is described herein. The die includes a number of fluid feed holes disposed in a line parallel to a longitudinal axis of the die. A number of fluidic actuators are disposed in a line parallel to the fluid feed holes. A crack detector trace is routed between each of the plurality of fluid feed holes.

公开(公告)号：US20210354462A1

公开(公告)日：2021-11-18

申请号：US16766525

申请日：2019-02-06

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

Inventor： Michael W. Cumbie ,  Scott A. Linn ,  Anthony M. Fuller ,  James Michael Gardner

IPC: B41J2/14

Abstract: A die for a printhead is described herein. The die includes a number of fluid feed holes disposed in a line parallel to a longitudinal axis of the die, wherein the fluid feed holes are formed through a substrate of the die. The die includes a number of fluidic actuators, proximate to the fluid feed holes, to eject fluid received from the fluid feed holes. Circuitry on the die operates the fluidic actuators, wherein traces are provided in layers between adjacent fluid feed holes, connecting circuitry on each side of the fluid feed holes.

公开(公告)号：US20210354456A1

公开(公告)日：2021-11-18

申请号：US16956703

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 number of fluid actuation devices, comprising a circuit configured to have a memory access state which can be set to one of an enabled state and disabled state. The integrated circuit to include a fluid actuation circuit to transmit selection information for a fluid actuation device, the selection information comprising a data state bit. The integrated circuit to include a memory cell array, configured so that each memory cell is accessible by the memory access state being enabled, and the data state bit being set.

公开(公告)号：US20210354455A1

公开(公告)日：2021-11-18

申请号：US16766519

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 ,  B41J2/14

Abstract: A die for a printhead is provided in examples. The die includes a number of fluidic actuator arrays. A data block is associated with each of the plurality of fluidic actuator arrays. The die includes an interface comprising a data pad and a clock pad, wherein a data bit value present at the data pad is loaded into a first data block corresponding to a first fluidic actuator array on a rising clock edge and loaded into a second data block corresponding to a second fluidic actuator array on a falling clock edge.

公开(公告)号：US20210237058A1

公开(公告)日：2021-08-05

申请号：US17049287

申请日：2018-08-09

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

Inventor： James Michael Gardner ,  Daryl E. Anderson ,  Eric Martin ,  Alexander Govyadinov

IPC: B01L3/00 ,  G01N27/02

Abstract: A microfluidic device may include an impedance sensor located within a fluidic priming orifice within a fluidic channel of the microfluidic device, and control logic. The control logic is to force a current into the impedance sensor to sense the presence of a fluid within the fluidic channel at the locations of the impedance sensor, and determine if the fluid is primed into the fluidic channel based on the impedance values sensed by the impedance sensor.

公开(公告)号：US11040530B2

公开(公告)日：2021-06-22

申请号：US16763032

申请日：2018-01-24

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

Inventor： Daryl E. Anderson ,  James A. Feinn ,  Eric Martin ,  James Michael Gardner

IPC: B41J2/045 ,  B41J2/14 ,  B41J2/145

Abstract: In one example in accordance with the present disclosure, a fluidic system is described. The fluidic system includes a fluidic die. The fluidic die includes a substrate in which a number of fluid chambers are formed. Each fluid chamber includes a fluid actuator disposed within the fluid chamber. A number of actuator sensors are disposed on the substrate to output at least one value indicative of a sensed characteristic of fluid actuators. A number of substrate temperature sensors are also disposed on the substrate to sense a temperature for the substrate. An actuator evaluation device of the fluidic system determines a state of the fluid actuator based at least in part on the at least one value and at least one correction value associated with the temperature sensed by the number of substrate temperature sensors.

公开(公告)号：US20210178756A1

公开(公告)日：2021-06-17

申请号：US16760918

申请日：2017-11-22

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

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

IPC: B41J2/045

Abstract: A fluidic die may include at least two zones, a reference temperature sensor communicatively coupled to each zone, a calibration voltage generator coupled between the zones and the reference temperature sensor, and a calibration loop circuit associated with each zone to calibrate each zone based on a voltage provided by the reference temperature sensor.