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公开(公告)号：US20180009222A1
公开(公告)日：2018-01-11
申请号：US15547116
申请日：2015-04-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Rio Rivas , Lawrence H White , Ed Friesen , Erik D Torniainen
Abstract: In some examples, a printhead can include a main printer fluid line, a firing chamber in fluid communication with the main printer fluid line to receive printer fluid from the main printer fluid line, and a resistor positioned in the firing chamber. The resistor can, for example, receive an electronic current to cause the resistor to heat up and eject printer fluid droplets from the printhead. The printhead can further include a photolithographically fabricated check valve positioned in the firing chamber. The check valve can, for example, be openable to allow filling of the firing chamber with printer fluid and closeable to at least partially seal the main printer fluid line from printer fluid blowback caused by the resistor.
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公开(公告)号：US11260668B2
公开(公告)日：2022-03-01
申请号：US17065831
申请日：2020-10-08
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Alexander Govyadinov , Erik D Torniainen , David P Markel
Abstract: A fluid ejection device may include a first channel having a first end and a second end, a first drop ejector along the first channel, a second channel having a first end and a second end, a second drop ejector along the second channel, a third channel extending between and connecting the first end of the first channel and the first end of the second channel, a fourth channel extending between and connecting the second end of the firs channel and the second end of the second channel and a fifth channel extending between and connecting the third channel and the fourth channel.
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公开(公告)号：US10655994B2
公开(公告)日：2020-05-19
申请号：US15546327
申请日：2015-04-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Erik D Torniainen , Pavel Kornilovich
Abstract: An apparatus includes a microfluidic channel and a flow sensor along the microfluidic channel. The flow sensor includes a heat emitting resistor for connection to an electric current source, analytical parameter sensor and electronics. The heat emitting resistor has a resistance that varies in response to temperature. The electrical parameter sensor is to sense an electrical parameter of the heat emitting resistor that is based on the resistance of the heat emitting resistor. The electronics determine a flow based on the sensed electrical parameter.
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公开(公告)号：US20200031135A1
公开(公告)日：2020-01-30
申请号：US16337579
申请日：2017-01-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Tsuyoshi Yamashita , Alexander Govyadinov , Nick McGuinness , Erik D Torniainen , David P Markel
IPC: B41J2/18
Abstract: A fluid ejection device includes a fluid slot, two laterally adjacent fluid ejection chambers each communicated with the fluid slot and having a drop ejecting element therein, and a fluid circulation path communicated with each of the two laterally adjacent fluid ejection chambers and having a fluid circulating element therein, with the two laterally adjacent fluid ejection chambers to concurrently eject drops of fluid therefrom such that the drops of fluid are to coalesce during flight.
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公开(公告)号：US10112408B2
公开(公告)日：2018-10-30
申请号：US15545013
申请日：2015-02-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Chien Hua Chen , Michael W Cumbie , Erik D Torniainen
Abstract: A fluid ejection die has a substrate through which an array of fluid feed holes is formed. The fluid feed holes are separated by ribs. Each fluid feed hole is to guide fluid to an array of drop generators.
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Patent Agency Ranking
公开(公告)号：US20180015732A1
公开(公告)日：2018-01-18
申请号：US15545013
申请日：2015-02-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Chien Hua Chen , Michael W Cumbie , Erik D Torniainen
CPC classification number: B41J2/19 , B41J2/1404 , B41J2/14201 , B41J2/1601 , B41J2/1603 , B41J2/1607 , B41J2/1626 , B41J2/1632 , B41J2/1634 , B41J2/1637 , B41J2002/14403 , B41J2002/14419
Abstract: A fluid ejection die has a substrate through which an array of fluid feed holes is formed. The fluid feed holes are separated by ribs. Each fluid feed hole is to guide fluid to an array of drop generators.
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公开(公告)号：US11318466B2
公开(公告)日：2022-05-03
申请号：US16618200
申请日：2017-07-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： David P. Markel , Erik D Torniainen , Alexander Govyadinov , Pavel Kornilovich
IPC: B01L3/00
Abstract: One example includes a device that may include a heating element and a molecular binding site. The heating element may heat a fluid volume, interfaced with the heating element, in response to a voltage being applied to the heating element, the heat transforming the fluid volume from a liquid state into a vaporized state to generate fluid motion within the fluid volume. The molecular binding site may be disposed proximate to the heating element, in which a portion of the fluid volume expands when the fluid volume transforms from the liquid state into the vaporized state, the vaporized state of the fluid volume generating the fluid motion within a target fluid that is disposed within the molecular binding site.
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公开(公告)号：US11186090B2
公开(公告)日：2021-11-30
申请号：US16320933
申请日：2016-11-01
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Chien-Hua Chen , Michael W. Cumbie , Erik D Torniainen
Abstract: Examples include a fluid ejection die embedded in a molded panel. The fluid ejection die comprises a substrate, and the substrate includes an army of nozzles extending therethrough. The substrate has a first surface in which nozzle orifices are formed and a second surface, opposite the first surface, in which nozzle inlet openings are formed. The fluid ejection die is embedded in the molded panel such that the first surface of the substrate is approximately planar with a top surface of the molded panel. The molded panel has a fluid channel formed therethrough in fluid communication with the nozzle inlet openings of the array of nozzles.
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公开(公告)号：US10828892B2
公开(公告)日：2020-11-10
申请号：US15547116
申请日：2015-04-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Rio Rivas , Lawrence H White , Ed Friesen , Erik D Torniainen
Abstract: In some examples, a printhead can include a main printer fluid line, a firing chamber in fluid communication with the main printer fluid line to receive printer fluid from the main printer fluid line, and a resistor positioned in the firing chamber. The resistor can, for example, receive an electronic current to cause the resistor to heat up and eject printer fluid droplets from the printhead. The printhead can further include a photolithographically fabricated check valve positioned in the firing chamber. The check valve can, for example, be openable to allow filling of the firing chamber with printer fluid and closeable to at least partially seal the main printer fluid line from printer fluid blowback caused by the resistor.
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公开(公告)号：US10780705B2
公开(公告)日：2020-09-22
申请号：US16095478
申请日：2016-07-29
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Nicholas McGuinness , Alexander Govyadinov , Tsuyoshi Yamashita , Erik D Torniainen , David P Markel
Abstract: A fluid ejection device includes a fluid slot, two laterally adjacent fluid ejection chambers each having a drop ejecting element therein, a fluid circulation path communicated with the fluid slot and each of the two laterally adjacent fluid ejection chambers, and a fluid circulating element within the fluid circulation path, with the fluid circulating element laterally adjacent at least one of the two laterally adjacent fluid ejection chambers, and the two laterally adjacent fluid ejection chambers to substantially simultaneously eject drops of fluid therefrom such that the drops of fluid are to coalesce during flight.
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