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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.
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公开(公告)号：US20200247116A1
公开(公告)日：2020-08-06
申请号：US16857403
申请日：2020-04-24
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Eric Martin , Vincent C. Korthuis
Abstract: In some examples, a fluid ejection device includes a nozzle to dispense fluid, and a recirculation controller to control recirculating of the nozzle. The recirculation controller is to receive, from a fluid ejection controller, an indication corresponding to a start of a sampling time interval, determine, during the sampling time interval, whether a firing event corresponding to firing of the nozzle has occurred, and in response to determining that the firing event has not occurred, cause activation of a recirculation pump to recirculate fluid through a chamber of the nozzle.
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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.
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公开(公告)号：US20190375206A1
公开(公告)日：2019-12-12
申请号：US16331862
申请日：2016-12-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Daryl E Anderson , Eric Martin , James Gardner
Abstract: Examples include a fluid ejection die. Examples comprise an array of nozzles, where each respective nozzle includes a respective fluid ejector. Examples further include at least one die sensor. Furthermore, the examples include signal control logic to suppress transmission of a first set of signals for the fluid ejection die during sensing of die characteristics with the at least one die sensor.
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公开(公告)号：US20190248131A1
公开(公告)日：2019-08-15
申请号：US16318214
申请日：2016-10-31
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Daryl E Anderson , Eric Martin , James Gardner
CPC classification number: B41J2/0458 , B41J2/04543 , B41J2/04555 , B41J2/04563 , B41J2/14153 , B41J2/175 , B41J2202/12
Abstract: A fluid ejection device with a fluid chamber including a vaporization chamber and a thermal drive bubble formation mechanism to vaporize a portion of a fluid in the vaporization chamber to form a drive bubble in response to a firing signal during a firing operation. A drive bubble detect sensor separate from the thermal drive bubble formation mechanism and in contact with fluid in the vaporization chamber, the drive bubble detect sensor to inject a fixed current through the vaporization chamber to generate a first voltage signal representing a voltage response of the vaporization chamber and indicative of drive bubble formation during the firing operation. A thermal sensor to generate a second voltage signal indicative of a thermal response of the vaporization chamber during the firing operation, the first and second voltage signals combined being representative of an operating condition of the fluid chamber.
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Patent Agency Ranking
公开(公告)号：US20180050537A1
公开(公告)日：2018-02-22
申请号：US15673051
申请日：2017-08-09
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Chris Bakker , Eric Martin , Adam L Ghozeil
IPC: B41J2/045
CPC classification number: B41J2/04581 , B41J2/04541 , B41J2/0455 , B41J2/0458 , B41J2/04585 , B41J2/04588 , B41J2/175 , B41J2/17546 , B41J2/18
Abstract: A printhead includes an address line, data lines, a fire pulse line, and a plurality of primitives, each primitive corresponding to a different data line and including a plurality of activation devices, each activation device corresponding to a different address of a set of addresses. A buffer receives data packets, each data packet including address data representative of an address of the set of addresses and print data for each primitive corresponding to the address. For each data packet, the buffer directs the address data to address logic and places the print data on the respective data line, and the address logic encodes the address represented by the address data onto the address line. For each primitive, the activation device corresponding to the address on the address bus activates a corresponding primitive function based on the corresponding print data when a fire pulse is present on the fire pulse line.
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公开(公告)号：US11467116B2
公开(公告)日：2022-10-11
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
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.
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公开(公告)号：US11312129B2
公开(公告)日：2022-04-26
申请号：US17267542
申请日：2018-11-21
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Eric Martin , James R. Przybyla , Daryl E. Anderson
Abstract: In one example in accordance with the present disclosure, a fluidic die is described. The fluidic die includes an array of firing subassemblies grouped into zones. Each firing subassembly includes 1) a firing chamber, 2) a fluid actuator, and 3) a sensor plate. The fluidic die also includes a measurement device per zone to measure a voltage indicative of an impedance within a selected firing chamber. The fluidic die includes a selector per firing subassembly to couple a selected sensor plate to the measurement device. A selector is adjacent a respective firing subassembly and a distance between the selector and the measurement device is different as compared to other selectors.
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公开(公告)号：US11292250B2
公开(公告)日：2022-04-05
申请号：US16965703
申请日：2018-03-12
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Eric Martin , Tsuyoshi Yamashita , James R. Przybyla
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. Each actuator is disposed in a fluid chamber. The fluidic die also includes an array of fluid sensors. Each fluid sensor is disposed within a fluid chamber and determines a characteristic within the fluid chamber. A data parser of the fluidic die extracts from an incoming signal, firing instructions and measurement instructions for the fluidic die. The measurement instructions indicate at least one of a peak measurement during a nucleation event and a reference measurement during a non-nucleation event. A firing controller generates firing signals based on the firing instructions and a measurement controller activates, during a measurement interval of a printing cycle for the primitive, a measurement for a selected actuator based on the measurement instructions.
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公开(公告)号：US11260656B2
公开(公告)日：2022-03-01
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 fluidic die, a setpoint register to receive a target temperature setpoint for the fluidic 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.
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