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公开(公告)号：US11666910B2
公开(公告)日：2023-06-06
申请号：US17268394
申请日：2018-11-26
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Daryl E. Anderson , George H. Corrigan, III , Alexander Govyadinov
CPC classification number: B01L3/50273 , B01L7/525 , C12Q1/686 , B01L2200/0673 , B01L2300/0645 , B01L2300/1827 , B01L2400/0442
Abstract: In one example in accordance with the present disclosure, a microfluidic device is described. The microfluidic device includes a reservoir to contain a first thermally expandable fluid, a first heater to heat the thermally expandable fluid in the reservoir, a channel extending from the reservoir and connected to the reservoir at a first opening, and a liquid volume obstructing the channel.
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公开(公告)号：US20210362491A1
公开(公告)日：2021-11-25
申请号：US17045517
申请日：2018-06-11
Applicant: Hewlett-Packard Development Company, L.P
Inventor： Daryl E. Anderson , Eric T. Martin , James Michael Gardner
IPC: B41J2/045
Abstract: Examples of a fluidic die for thermal zone selection with a circular shift register are described herein. In some examples, the fluidic die includes multiple thermal zones. Each thermal zone includes a temperature sensor and a fluidic actuator. The fluidic die also includes shared thermal control circuitry to process an output of the temperature sensor of a selected thermal zone. The fluidic die further includes a circular shift register that includes multiple memory elements. Each memory element is associated with one thermal zone. A token circulates within the circular shift register to select one thermal zone at a time for processing by the shared thermal control circuitry.
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公开(公告)号：US20210362489A1
公开(公告)日：2021-11-25
申请号：US17046881
申请日：2018-06-11
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Daryl E. Anderson , Eric Martin , James Michael Gardner
IPC: B41J2/045
Abstract: Examples of a fluidic die for thermal zone selection with a sequencer and decoders are described herein. In some examples, the fluidic die includes multiple thermal zones. Each thermal zone includes a temperature sensor, a fluidic actuator and a decoder. The fluidic die also includes shared thermal control circuitry to process an output of the temperature sensor in a selected thermal zone. The fluidic die further includes a sequencer to output a sequence state to select one thermal zone at a time for processing by the shared thermal control circuitry. The decoder of the selected thermal zone decodes the sequence state.
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公开(公告)号：US11173711B2
公开(公告)日：2021-11-16
申请号：US16762956
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 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.
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公开(公告)号：US20210283900A1
公开(公告)日：2021-09-16
申请号：US16603822
申请日：2018-04-06
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Daryl E. Anderson , Eric T. Martin
IPC: B41J2/045 , B41J2/145 , B33Y30/00 , B33Y50/02 , B29C64/209 , B29C64/393
Abstract: In some examples, a fluid dispensing device includes a plurality of fluidic actuators, and a plurality of sense measurement storage elements to store sense measurement indicators for indicating whether sense measurement is to be performed for fluidic actuators of the plurality of fluidic actuators. The fluid dispensing device further includes a controller to control setting of the sense measurement indicators in the sense measurement storage elements to select which fluidic actuator is to be subject to a sense measurement.
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Patent Agency Ranking
公开(公告)号：US11090928B2
公开(公告)日：2021-08-17
申请号：US16763097
申请日：2017-12-11
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Daryl E. Anderson , Eric Martin , James Michael Gardner , James A. Feinn
Abstract: A method of distinguishing between fluids may include providing a current to an electrode disposed within a fluidic passageway of a fluidic die, the current to be forced into a fluid within the fluidic die, sensing an impedance at the electrode, and determining a particle vehicle separation level of the fluid based on the sensed impedance between a first instance and a second instance.
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公开(公告)号：US11040546B2
公开(公告)日：2021-06-22
申请号：US16094601
申请日：2016-07-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Daryl E. Anderson , James Michael Gardner
IPC: B41J2/175 , G01F23/00 , G01F23/24 , G01F23/292
Abstract: In one example a fluid level sensing device is described. The device includes a sensing die having a number of fluid level sensors disposed thereon and a number of control devices, each control device corresponding to one of the number of fluid level sensors. A control device includes a comparing device to determine a state of a corresponding fluid level sensor. A state of the fluid level sensor is selected from the group consisting of a fluid state and a no-fluid state. Each control device also includes a non-volatile memory device corresponding to the comparing device to indicate whether the corresponding fluid level sensor is at the fluid state or the no-fluid state. A control device also includes a locking device to irreversibly set the non-volatile memory device to the no-fluid state independent of a write command from a controller.
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公开(公告)号：US11020963B2
公开(公告)日：2021-06-01
申请号：US16760925
申请日：2017-12-11
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Eric Martin , Daryl E. Anderson
Abstract: A fluidic die may include at least one fluidic passageway, at least one electrode disposed within the at least one fluidic passageway, 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. The control circuitry activates the electrode during a separate pulse group assigned to the activation of the electrode among at least one other pulse group assigned to an activation of at least one fluid actuator within a column group.
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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.
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公开(公告)号：US20210016566A1
公开(公告)日：2021-01-21
申请号：US16970482
申请日：2018-04-06
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Daryl E. Anderson , Eric T. Martin
Abstract: In some examples, a fluid dispensing device includes a plurality of fluidic actuators, activate data storage elements, and sense measurement storage elements. The fluid dispensing device includes a decoder to detect, based on a first activate indicator of the activate indicators, that a first fluidic actuator is to be activated, detect, based on a first sense measurement indicator of the sense measurement indicators that a sense measurement is to be performed on the first fluidic actuator, and in response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed on the first fluidic actuator, suppress activation of the first fluidic actuator at a first time, and activate the first fluidic actuator at a second time corresponding to a sense measurement interval to perform the sense measurement of the first fluidic actuator.
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