公开(公告)号：WO2019143328A1

公开(公告)日：2019-07-25

申请号：PCT/US2018/014046

申请日：2018-01-17

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

Inventor： ANDERSON, Daryl E. ,  MARTIN, Eric

IPC: B41J2/175 ,  B41J2/14

Abstract: In some examples, a fluid dispensing device includes storage elements, and a switch assembly comprising switches controllable by control signals responsive to a given fire event that activates a nozzle of the fluid dispensing device to provide a first sense measurement of a first condition of the nozzle to a first storage element of the storage elements, and provide a second sense measurement of a different second condition of the nozzle to a second storage element of the storage elements.

公开(公告)号：WO2019117849A1

公开(公告)日：2019-06-20

申请号：PCT/US2017/065543

申请日：2017-12-11

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

Inventor： MARTIN, Eric ,  GARDNER, James Michael ,  FEINN, James A. ,  CICILI, Rogelio

IPC: G01N15/06 ,  G01N27/06 ,  G01N27/07 ,  G01N27/74

Abstract: A fluid particle concentration detection device may include at least one electrode disposed within a fluidic passageway of a fluidic die, and control circuitry to activate the electrode within the fluidic die. An impedance sensed at the electrode corresponds to a particle concentration within the fluid.

公开(公告)号：WO2019103739A1

公开(公告)日：2019-05-31

申请号：PCT/US2017/063039

申请日：2017-11-22

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

Inventor： ANDERSON, Daryl E. ,  MARTIN, Eric ,  GARDNER, James Michael

IPC: B41J2/14 ,  B41J2/175

CPC classification number: B41J2/04581 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04591

Abstract: A fluidic die that may, in an example, include a regulation module communicatively coupled to a clock generator to receive a clock signal, and a firing pulse adjustment regulator communicatively coupled to the regulation module to receive an adjustment value wherein the regulation module, when executed by a processor, adjusts an input firing pulse at the fluidic die based on the adjustment value.

公开(公告)号：WO2019013792A1

公开(公告)日：2019-01-17

申请号：PCT/US2017/041835

申请日：2017-07-13

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

Inventor： ANDERSON, Daryl E. ,  GARDNER, James M. ,  MARTIN, Eric

IPC: B41J2/14 ,  B41J29/38

Abstract: A fluidic die may include an array of fluid actuators comprising a first set of fluid actuators and a second set of fluid actuators. The fluidic die may further include a first power line connected to the first set of fluid actuators, a second power line connected to the second set of fluid actuators and a third power line connected to the first set of fluid actuators.

公开(公告)号：WO2019013768A1

公开(公告)日：2019-01-17

申请号：PCT/US2017/041533

申请日：2017-07-11

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

Inventor： ANDERSON, Daryl E. ,  MARTIN, Eric ,  GARDNER, James Michael

IPC: B41J2/175

CPC classification number: B41J2/0458 ,  B41J2/04541 ,  B41J2/04543 ,  B41J2/04555 ,  B41J2/04573

Abstract: In one example in accordance with the present disclosure, a fluidic die is described. The fluidic die includes an array of fluid actuators grouped into primitives. The fluidic die also includes a fluid actuator controller to selectively activate fluid actuators via activation data. The fluidic die also includes an array of actuator evaluators, wherein each actuator evaluator of the fluidic die is coupled to a subset of the array of fluid actuators. The actuator evaluators selectively evaluate an actuator characteristic of a selected fluid actuator based on: an output of an actuator sensor paired with the selected fluid actuator, the activation data, and an evaluation control signal.

公开(公告)号：WO2019005091A1

公开(公告)日：2019-01-03

申请号：PCT/US2017/040187

申请日：2017-06-30

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

Inventor： MARTIN, Eric ,  ANDERSON, Daryl E

IPC: B41J2/165 ,  B41J2/175 ,  B41J29/393

Abstract: In one example, a fault-tolerant printhead includes an array of fluid actuators. Each fluid actuator includes a fault sensor to detect a faulted fluid actuator and a per-fluid actuator memory to store a fault sensor state of the fluid actuator. The fault-tolerant printhead also includes an interface to read a state of each per-fluid actuator memory.

公开(公告)号：WO2018190857A1

公开(公告)日：2018-10-18

申请号：PCT/US2017/027556

申请日：2017-04-14

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

Inventor： ANDERSON, Daryl E. ,  MARTIN, Eric

IPC: B41J2/155 ,  B41J2/175

Abstract: In some examples, a fluidic die includes a plurality of fluid actuators to cause ejection of fluid towards a target, an actuation data register to store actuation data that indicates each fluid actuator of the plurality of fluid actuators to actuate, and a controller to use different drop weight patterns and actuation data in the actuation data register to dispense fluid of different drop weights using the plurality of fluid actuators. Each drop weight pattern of the different drop weight patterns indicates a respective set of fluid actuators of the plurality of fluid actuators enabled for actuation, and a first drop weight pattern of the different drop weight patterns corresponding to a first drop weight, and a second drop weight pattern of the different drop weight patterns corresponding to a second drop weight different from the first drop weight.

公开(公告)号：WO2018186856A1

公开(公告)日：2018-10-11

申请号：PCT/US2017/026159

申请日：2017-04-05

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

Inventor： ANDERSON, Daryl E. ,  MARTIN, Eric ,  GARDNER, James Michael

IPC: B41J2/14 ,  B41J2/045 ,  B41J2/175 ,  B41J29/393

Abstract: In one example in accordance with the present disclosure, a fluid ejection die is described. The die includes a number of actuators to manipulate fluid. The actuators are disposed on the fluid ejection die and are grouped as primitives on the fluid ejection die. The fluid ejection die also includes a number of actuators sensors disposed on the fluid ejection die. The nozzle sensors receive a sense voltage indicative of a state of corresponding actuators. Each actuator sensor is coupled to a respective actuator. The fluid ejection die also includes an actuator evaluation device per primitive, which actuator evaluation device is disposed on the fluid ejection die. The actuator evaluation device evaluates an actuator characteristic of any actuator within the primitive and generates an output indicative of a failing actuator of the fluid ejection die.

公开(公告)号：WO2018186847A1

公开(公告)日：2018-10-11

申请号：PCT/US2017/026091

申请日：2017-04-05

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

Inventor： ANDERSON, Daryl E. ,  MARTIN, Eric

IPC: B41J2/165 ,  B41J2/195 ,  B41J2/20 ,  B41J2/135 ,  B41J2/07

Abstract: In one example in accordance with the present disclosure, a fluid ejection die is described. The die includes a number of actuator sensors disposed on the fluid ejection die to sense a characteristic of a corresponding actuator and to output a first voltage corresponding to the sensed characteristic. Each actuator sensor is coupled to a respective actuator and multiple coupled actuator sensors and actuators are grouped as primitives on the fluid ejection die. The die also includes an actuator evaluation die per primitive to evaluate an actuator characteristic of any actuator within the primitive Based on the first voltage and a threshold voltage. The die also includes a time-shift chain component to communicate a delayed evaluation signal, which delayed evaluation signal delays an evaluation of the actuator characteristic a predetermined amount of time following an activation event.

公开(公告)号：WO2018156174A1

公开(公告)日：2018-08-30

申请号：PCT/US2017/019784

申请日：2017-02-27

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

Inventor： ANDERSON, Daryl E. ,  MARTIN, Eric ,  GARDNER, James Michael

IPC: B41J2/05 ,  B41J2/175 ,  B41J2/135

CPC classification number: B41J2/125 ,  B41J2/04555 ,  B41J2/0458 ,  B41J2/14153

Abstract: A fluid ejection system can include a fluid ejection die. The fluid ejection die can include a drive bubble device and a sensor operatively connected to the drive bubble device. Additionally, the fluid ejection die can include a sensor control logic operatively connected to each sensor. The sensor control logic may be configured to detect a first signal response to the drive bubble device being fired at a first pulse length. Furthermore, the fluid ejection die can include a controller operatively connected to sensor control logic. The controller may be configured to determine a state of operability of the sensor control logic, based at least in part on the first signal response.