公开(公告)号：US10940693B1

公开(公告)日：2021-03-09

申请号：US16728207

申请日：2019-12-27

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

Inventor： James Michael Gardner ,  Scott A. Linn ,  Stephen D. Panshin ,  Jefferson P. Ward ,  David Owen Roethig ,  David N. Olsen ,  Anthony D. Studer ,  Michael W. Cumbie ,  Sirena Chi Lu

IPC: B41J2/175 ,  G01L23/08 ,  B41J29/393

Abstract: Disclosed herein are sensor circuits for a replaceable print material container, the sensor circuit to communicate with a printer logic circuit. An example sensor circuit includes a first sensor to detect at least one of a pneumatic stimulus or a pressurization applied by a printer, a second sensor, and an interface to communicate with at least one of a voltage source or a data source of the printer logic circuit. The example sensor circuit also includes logic circuitry, responsive to a class parameter, to: (a) output a first signal based on at least one of the pneumatic stimulus or the pressurization sensed by the first sensor when the class parameter is a first class parameter; and (b) output a second signal based on at least one of an output of the second sensor, different data, or a different algorithm when the class parameter is a second class parameter.

公开(公告)号：US20210010967A1

公开(公告)日：2021-01-14

申请号：US16766633

申请日：2018-01-24

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

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

IPC: G01N27/22 ,  G01N27/12

Abstract: In one example in accordance with the present disclosure, a fluid analysis system is described. The fluid analysis system includes a fluidic die. The fluidic die includes a fluid chamber to hold a volume of fluid to be analyzed and an impedance sensor disposed within the fluid chamber. The impedance sensor measures an impedance of the fluid in the fluid chamber. The fluid analysis system also includes an evaluator device electrically coupled to the impedance sensor. The evaluator device determines at least one property of the fluid based on the impedance.

公开(公告)号：US10850502B2

公开(公告)日：2020-12-01

申请号：US16613183

申请日：2017-07-11

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

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

IPC: B41J2/04 ,  B41J2/045

Abstract: In one example in accordance with the present disclosure, a fluidic die is described. The die includes an array of fluid actuators grouped into primitives. The 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. A fluid actuator controller groups multiple fluid actuators of the array of fluid actuators into primitives. A primitive size is greater than or equal to a lower limit threshold and the subset of the array of fluid actuators coupled to the actuator evaluation device is less than or equal to the lower limit threshold.

公开(公告)号：US10807373B2

公开(公告)日：2020-10-20

申请号：US16306075

申请日：2016-09-23

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

Inventor： Ning Ge ,  Steven J Simske ,  Daryl E Anderson ,  James Michael Gardner ,  Eric Martin

IPC: B41J2/165 ,  B41J2/14 ,  B33Y30/00 ,  B29C64/209 ,  B41J2/20 ,  B41J2/21 ,  B41J2/045

Abstract: In one example in accordance with the present disclosure, a fluid ejection device is described. The fluid ejection device includes a number of nozzles to eject fluid. Each nozzle includes a firing chamber to hold fluid, a nozzle orifice through which to dispense fluid, and an ejector disposed in the firing chamber to eject fluid through the nozzle orifice. The fluid ejection device also includes a particle detector to detect the presence of foreign particles within the fluid in the firing chamber.

公开(公告)号：US10800167B2

公开(公告)日：2020-10-13

申请号：US16317883

申请日：2016-10-24

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

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

IPC: B41J2/045 ,  B41J2/14 ,  B41J2/125

Abstract: Example implementations relate to low voltage bias of nozzle sensors. For example, a fluid ejection die according to the present disclosure may include a plurality of nozzles, and each nozzle may include a nozzle sensor and a fluid ejector, among other components. The fluid ejection die may also include a voltage reduction device to maintain a low voltage bias on the plurality of nozzle sensors during an operation of the plurality of nozzles. A plurality of sense circuits may be electrically coupled to a respective nozzle sensor among the plurality of nozzle sensors, and each sense circuit may evaluate a status of the respective nozzle after the operation.

公开(公告)号：US10800166B2

公开(公告)日：2020-10-13

申请号：US16483497

申请日：2017-04-05

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

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

IPC: B41J2/14 ,  B41J2/045 ,  B41J2/21 ,  B29C64/112 ,  B33Y30/00 ,  B29C64/214 ,  B41J2/165 ,  B41J2/16 ,  B41J2/355

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 alter an evaluation voltage based on a performance of the corresponding actuator. The die also includes an actuator evaluation device per primitive to detect a failed actuator based at least in part on a comparison of the altered evaluation voltage and at least one threshold voltage. The die also includes a number of disable device coupled to respective actuators and to disable failed actuators.

公开(公告)号：US20200316937A1

公开(公告)日：2020-10-08

申请号：US16763246

申请日：2017-12-15

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

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

IPC: B41J2/045

Abstract: A fluidic die that includes at least one temperature sensor coupled to at least one zone of the fiuidic die, a setpoint register to receive a target temperature setpoint for the fiuidic die wherein a detected temperature presented by the at least one temperature sensor is compared to the target temperature setpoint using a comparator module to get a firing pulse adjustment value, and a firing pulse used to convey an amount of fluid within the die is adjusted using the firing pulse adjustment value.

公开(公告)号：US20200307233A1

公开(公告)日：2020-10-01

申请号：US16753415

申请日：2017-10-18

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

Inventor： Daryl E. Anderson ,  James Michael Gardner

IPC: B41J2/175

Abstract: It is disclosed a printing agent container having ink an authenticity detection mechanisms comprising: a receptacle having a top wall a bottom wall opposing such top wall and a sidewall between such top wall and such bottom wall; an internal volume defined by such receptacle that contains a printing agent, and a vibration transducer on one of the side walls, wherein the container is to be mechanically coupled to a carriage so that the printing fluid is disposed on the bottom surface, being the vibration transducer to detect a vibration signal induced by the carriage and wherein the container comprises a communication channel to a controller being the controller to receive through the communication channel a container signature from the vibration transducer and to identify a container identification signal associated to the container signature.

公开(公告)号：US20200180305A1

公开(公告)日：2020-06-11

申请号：US16613190

申请日：2017-07-11

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

Inventor： Daryl E Anderson ,  Eric Martin ,  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 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：US20190137316A1

公开(公告)日：2019-05-09

申请号：US16094121

申请日：2016-04-29

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

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

IPC: G01F23/24 ,  B41J2/175

Abstract: An example printing cartridge includes a fluid container, a sensing die including a plurality of sensing locations in thermal contact with the fluid container, and a voltage comparator to output time-based information by comparing a sensed voltage generated at a selected sensing location of the plurality of sensing locations to a threshold voltage, the time-based information representative of whether a fluid is present at the sensing location.