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公开(公告)号：WO2012105935A1
公开(公告)日：2012-08-09
申请号：PCT/US2011/023129
申请日：2011-01-31
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. , BENGALI, Sadiq , COOK, Galen P. , CUMBIE, Michael W. , MESSENGER, Robert K.
Inventor： BENGALI, Sadiq , COOK, Galen P. , CUMBIE, Michael W. , MESSENGER, Robert K.
CPC classification number: B41J2/05 , B41J2/14129 , B41J2/1603 , B41J2/1626 , B41J2/1628 , B41J2/1645 , B41J2002/14467
Abstract: In one embodiment, a fluid ejection device includes a substrate with a fluid slot and a membrane adhered to the substrate that spans the fluid slot. A resistor is disposed on top of the membrane over the fluid slot, and a fluid feed hole next to the resistor extends through the membrane to the slot. A shelf extends from the edge of the resistor to the edge of the feed hole, and a passivation layer covers the resistor and part the shelf. An etch-resistant layer is formed partly on the shelf and in between the fluid feed hole and the resistor.
Abstract translation: 在一个实施例中，流体喷射装置包括具有流体狭槽的基底和附着到跨越流体狭槽的基底的膜。 电阻器设置在流体槽上的膜的顶部上，并且电阻旁边的流体供给孔延伸穿过膜到槽。 一个搁板从电阻器的边缘延伸到馈电孔的边缘，钝化层覆盖电阻器和部件。 防腐蚀层部分地形成在搁板上并且在流体供给孔和电阻器之间。
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公开(公告)号：WO2023022714A1
公开(公告)日：2023-02-23
申请号：PCT/US2021/046557
申请日：2021-08-18
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： CUMBIE, Michael W. , SHKOLNIKOV, Viktor , LEONI, Napoleon J.
Abstract: A digital microfluidic assembly includes an electrode control element, which includes an array of individually controllable electrodes supported on a first side of a substrate, a chamber sealed relative to an opposite second side of the substrate and a plurality of apertures. The apertures extend through, and between the respective first and second sides of, the substrate and in communication with the chamber. A support is to align a consumable microfluidic receptacle with the array of electrodes to receive charges on an anisotropic conductivity portion of the receptacle to induce electrowetting movement of a liquid droplet within the microfluidic receptacle. Upon application of negative pressure through the chamber and the apertures, the array of electrodes becomes releasably secured against the microfluidic receptacle.
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公开(公告)号：WO2023003534A1
公开(公告)日：2023-01-26
申请号：PCT/US2021/042191
申请日：2021-07-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： SHKOLNIKOV, Viktor , CUMBIE, Michael W.
IPC: C12M1/02 , C12M1/34 , C12M1/38 , C12Q1/6809 , C12Q1/6844 , B81B1/00 , B81B7/02
Abstract: An example of degrading amplified nucleic acids includes expelling a nucleic acid degradation reagent from a reagent chamber in a nucleic acid testing device by actuating the reagent chamber, and expelling an amplified nucleic acid from an amplification chamber of the nucleic acid testing device. The method further includes mixing the amplified nucleic acid and the nucleic acid degradation reagent in a channel of the nucleic acid testing device, and collecting the mixed amplified nucleic acid and nucleic acid degradation reagent in a waste chamber of the nucleic acid testing device.
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公开(公告)号：WO2022086565A1
公开(公告)日：2022-04-28
申请号：PCT/US2020/057181
申请日：2020-10-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： CUMBIE, Michael W. , SHKOLNIKOV, Viktor , DENISON, Carson
Abstract: An example device includes a substrate and a cover separated from the substrate by a gap that includes a narrowed portion. The gap constrains a thickness of a fluid droplet situated between the substrate and the cover. The device further includes an array of electrodes at the substrate. The array of electrodes moves the fluid droplet within the gap in response to a charge applied to an electrode of the array of electrodes. The device further includes a thermal element positioned with respect to the substrate to change a temperature of the fluid droplet. The thermal element is positioned at the narrowed portion of the gap to reduce the thickness of the fluid droplet while undergoing the change in temperature.
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公开(公告)号：WO2022086551A1
公开(公告)日：2022-04-28
申请号：PCT/US2020/057021
申请日：2020-10-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： SHKOLNIKOV, Viktor , CUMBIE, Michael W.
Abstract: An example device includes a first short-term fluid storage memory; a second short-term fluid storage memory; and a dynamically configurable operation space having an array of electrodes for transporting droplets of fluids along dynamically configurable routes and performing an operation on the droplets of fluids received from the first short-term fluid storage memory and second short-term fluid storage memory and outputting the result of the operation to one of the first short-term fluid storage memory or second short-term fluid storage memory, and for performing a subsequent operation on droplets of fluids from the one of the first short-term fluid storage memory or second short-term fluid storage memory and the other short-term fluid storage memory and outputting the result of the subsequent operation to the other short-term fluid storage memory.
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Patent Agency Ranking
公开(公告)号：WO2022071947A1
公开(公告)日：2022-04-07
申请号：PCT/US2020/053593
申请日：2020-09-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： CUMBIE, Michael W. , CHEN, Chien-Hua , SHKOLNIKOV, Viktor
Abstract: In an example implementation according to aspects of the present disclosure, a non-transitory computer-readable medium comprises a set of instructions that when executed by a controller are to transmit first control signals from to cause a first droplet of fluid to be pulled onto a microfluidic electrode of a digital microfluidic (DMF) array from a first reservoir; transmit second control signals to cause a second droplet of fluid to be pulled onto the microfluidic electrode of the DMF array from a second reservoir, wherein the first droplet of fluid and the second droplet of fluid are to be mixed on the microfluidic electrode responsive to mixing control signals to be transmitted by the controller and responsively yield a mixed fluid droplet; and transmit third control signals to cause the mixed fluid droplet to propagate to a feedhole.
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公开(公告)号：WO2021188098A1
公开(公告)日：2021-09-23
申请号：PCT/US2020/023200
申请日：2020-03-17
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： CHEN, Zhizhang , CUMBIE, Michael W. , CHEN, Chien-Hua
Abstract: A method for forming a fluid ejection head may include providing a fluid ejection head having a body with a back face and a front face, a fluid actuator supported by the body, an ejection chamber in the body proximate the fluid actuator, an ejection orifice extending from the ejection chamber through the front face and a fluid passage extending from the back face to the ejection chamber. The method may further include occluding the ejection orifice, depositing a coating on internal sources of the fluid passage and ejection chamber by directing a gas into the fluid passage in the ejection chamber and opening the ejection orifice following the depositing of the coating on the internal surfaces.
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公开(公告)号：WO2021040702A1
公开(公告)日：2021-03-04
申请号：PCT/US2019/048499
申请日：2019-08-28
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： NG, Boon Bing , FULLER, Anthony M. , CUMBIE, Michael W.
Abstract: In some examples, a fluid dispensing device includes an inner chamber to contain a fluid. The fluid dispensing device further includes an orifice layer comprising a bubbler orifice to draw air through a bubbler chamber to the inner chamber responsive to a pressure satisfying a criterion, the bubbler chamber being adjacent the bubbler orifice. A circulation path circulates fluid drawn through a feed hole through the bubbler chamber.
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公开(公告)号：WO2020162912A1
公开(公告)日：2020-08-13
申请号：PCT/US2019/016783
申请日：2019-02-06
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： GARDNER, James Michael , FULLER, Anthony M. , CUMBIE, Michael W.
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. A number of fluidic actuators are proximate to the fluid feed holes, to eject fluid received from the fluid feed holes A number of field-effect transistors are parallel to the fluid feed holes, where each of the fluidic actuators is powered by an associated field effect transistor. Logic circuitry to actuate the plurality of field-effect transistors is disposed on the die on an opposite side of the fluid feed holes from the field-effect transistors, wherein traces, disposed between the fluid feed holes, electrically couple the logic circuitry to the field-effect transistors. The die has a repeating structure comprising one fluid feed hole, two fluidic actuators, and two field-effect transistors placed at an interval of two times a dot pitch in a line along the die.
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公开(公告)号：WO2020122868A1
公开(公告)日：2020-06-18
申请号：PCT/US2018/064849
申请日：2018-12-11
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： CHEN, Chien-Hua , CUMBIE, Michael W.
Abstract: A method of manufacturing a fluid ejection device may include coupling a plurality of fluid ejection dies to an epoxy mold compound (EMC), partially curing the EMC, applying a force to the fluid ejection dies and EMC for a period of time, heating the fluid ejection dies and EMC for the period of time, and releasing the force when the EMC is cured. The completion of the curing causes the plurality of fluid ejection dies to be angled with respect to one another, the angle of the plurality of fluid ejection dies creating a curve in the fluid ejection device.
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