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公开(公告)号：US11925932B2
公开(公告)日：2024-03-12
申请号：US17045247
申请日：2018-04-24
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Si-lam Choy
IPC: B01L3/00
CPC classification number: B01L3/50273 , B01L3/502715 , B01L2200/0684 , B01L2300/0883 , B01L2400/0406 , B01L2400/0442
Abstract: An example microfluidic device includes a microfluidic network through which operational fluid is to flow and a droplet ejector. The microfluidic device includes a drive fluid storage volume to contain drive fluid, the drive fluid storage volume connected in series between the microfluidic network and the droplet ejector. When the drive fluid is ejected from the droplet ejector, the operational fluid is drawn through the microfluidic network.
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公开(公告)号：US20220250389A1
公开(公告)日：2022-08-11
申请号：US16606484
申请日：2017-11-10
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Si-lam Choy
IPC: B41J2/175
Abstract: A fluid delivery system, in an example, may include a substrate and a lid coupled to a first side of the substrate wherein the substrate comprises a number of fluidic feed slots fluidically coupling the substrate to a die coupled to a second surface of the substrate and wherein the lid includes at least one main chamber to house at least one type of fluid, at least one overflow reservoir with the overflow reservoir fluidically coupled to the main chamber via an overflow channel, and wherein the overflow channel comprises a capillary pinch point to hold an amount of printing fluid within the main chamber.
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公开(公告)号：US20210129534A1
公开(公告)日：2021-05-06
申请号：US16629366
申请日：2017-07-31
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Si-lam Choy , Michael W Cumbie , Chien-Hua Chen , Jeffrey R Pollard
Abstract: In one example in accordance with the present disclosure, a fluidic ejection die is described. The die includes an array of nozzles. Each nozzle includes an ejection chamber and an opening. A fluid actuator is disposed within the ejection chamber. The fluidic ejection die also includes an array of passages, formed in a substrate, to deliver fluid to and from the ejection chamber. The fluidic ejection die also includes an array of enclosed cross-channels. Each enclosed cross-channel of the array of enclosed cross-channels is fluidly connected to a respective plurality of passages of the array of passages.
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公开(公告)号：US11207894B2
公开(公告)日：2021-12-28
申请号：US17045208
申请日：2018-04-06
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Si-lam Choy
Abstract: An example device includes a first chamber to contain a first fluid and a second chamber to contain a second fluid. The first chamber includes a first fluid outlet, and a first bubbler to ingest bubbles into the first chamber when pressure in the first chamber overcomes a first bubble pressure of the first bubbler. The second chamber includes a second fluid outlet, and a second bubbler to ingest bubbles into the second chamber when pressure in the first chamber overcomes a second bubble pressure of the second bubbler. An outlet node is fluidly connected to the first fluid outlet and the second fluid outlet. The outlet node draws the first fluid from the first chamber when the first bubbler ingests bubbles, and sequentially draws the second fluid from the second chamber when the second bubbler ingests bubbles.
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公开(公告)号：US11155094B2
公开(公告)日：2021-10-26
申请号：US16630049
申请日：2017-09-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Si-lam Choy
IPC: B41J2/165
Abstract: A fluid ejection device includes a fluid ejection assembly including a fluid ejection die, and a service assembly to be rotated to different positions relative to the fluid ejection assembly for different service operations of the fluid ejection die.
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公开(公告)号：US20200238699A1
公开(公告)日：2020-07-30
申请号：US16634926
申请日：2017-09-20
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Si-lam Choy , Chien-Hua Chen , Michael W Cumbie
IPC: B41J2/14
Abstract: A fluidic die includes a fluid channel layer including at least one fluid channel defined along a length of the fluid ejection device. The fluidic die also includes an interposer layer coupled to the fluid channel layer. The interposer layer includes a number of inlet ports defined in the interposer layer to fluidically couple the at least one channel layer to a fluid source, and a number of outlet ports defined in the interposer layer to fluidically couple the at least one channel layer to the fluid source.
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公开(公告)号：US20200164647A1
公开(公告)日：2020-05-28
申请号：US16630020
申请日：2017-07-31
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Si-lam Choy , Michael W Cumbie , Chien-Hua Chen , Jeffrey R Pollard
Abstract: In one example in accordance with the present disclosure, a fluidic ejection device is described. The device includes a fluidic ejection die embedded in a moldable material. The die includes an array of nozzles. Each nozzle includes an ejection chamber and an opening. A fluid actuator is disposed within the ejection chamber. The fluidic ejection die also includes an array of passages, formed in a substrate, to deliver fluid to and from the ejection chamber. The fluidic ejection die also includes an array of enclosed cross-channels. Each enclosed cross-channel of the array of enclosed cross-channels is fluidly connected to a respective plurality of passages of the array of passages. The device also includes the moldable material which includes supply slots to deliver fluid to and from the fluidic ejection die. A carrier substrate of the device supports the fluidic ejection die and moldable material.
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公开(公告)号：US12233415B2
公开(公告)日：2025-02-25
申请号：US17417306
申请日：2019-04-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Si-lam Choy , Hilary Ely , John Lahmann
IPC: B01L3/00 , A61L27/16 , A61L27/56 , B01F23/00 , B01F23/41 , B01F101/23 , B01L7/00 , B01L9/00 , B23Q17/24 , C07K14/705 , C08F220/56 , C08L33/26 , C12M1/34 , C12Q1/04 , C12Q1/18 , C12Q1/6844 , C12Q1/686 , G01N1/31 , G01N21/17 , G01N21/3577 , G01N21/359 , G01N21/39 , G01N21/45 , G01N21/64 , G01N21/77 , G01N21/78 , G01N27/414 , G01N30/12 , G01N30/68 , G01N30/70 , G01N30/72 , G01N30/88 , G01N33/00 , G01N33/18 , G01N33/50 , G01N33/53 , G01N33/543 , G01N33/68 , G01N33/74 , G01N35/00 , G01N35/10 , G06T7/00 , G06T7/90 , H10K10/46 , H10K85/00 , H10K85/20
Abstract: Examples herein involve amplification and detection of nucleic acids using a microfluidic reaction chamber. An example apparatus includes a reaction-chamber circuit to process a reagent and a biologic sample for amplification of nucleic acids. The apparatus further includes a plurality of capillaries to pass the reagent and the biologic sample through the microfluidic reaction chamber. A valve control system may selectively control each of a plurality of valves to cause the reagent and the biologic sample to selectively move through the microfluidic reaction chamber for the amplification of the nucleic acids according to a particular timing sequence. In various examples, a trapping region disposed in the microfluidic reaction chamber secures the nucleic acids in the microfluidic reaction chamber for amplification using the reaction-chamber circuit.
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公开(公告)号：US11597646B2
公开(公告)日：2023-03-07
申请号：US16098991
申请日：2016-07-26
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Chien-Hua Chen , Devin Alexander Mourey , Michael W. Cumbie , Si-lam Choy
Abstract: A device includes: a die including a microfluidic device; a polymer substrate formed around the die; and a separate fluid manifold attached to the polymer substrate over the die and on a same side of the substrate as the die, the manifold to deliver fluid to the die.
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公开(公告)号：US11325385B2
公开(公告)日：2022-05-10
申请号：US16640563
申请日：2017-10-19
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jacob Lum , Jeremy Sells , Si-lam Choy
Abstract: A fluidic die may include a fluid channel layer defining a number of fluid channels therein, a slot layer disposed on a side of the fluid channel layer, and a first fluid slot and a second fluid slot defined in the slot layer. At least one of the fluid channels fluidically couples the first fluid slot to the second fluid slot. The first fluid slot and the second fluid slot are defined in the slot layer along a length of the fluidic die.
