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公开(公告)号：US08991983B2
公开(公告)日：2015-03-31
申请号：US13967917
申请日：2013-08-15
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Michael Hager , Lawrence H White , Alexander N Govyadinov
CPC classification number: B41J2/04533 , B41J2/04528 , B41J2/0453 , B41J2/04563 , B41J2/0458 , B41J2/1404
Abstract: A printhead die includes end regions, a nozzle surface region, fluid passages, ejection chambers, fluid ejectors, non-ejection chambers, and heating resistors. The nozzle surface region is disposed between the end regions. The fluid passages include corresponding ejection nozzles. The ejection nozzles are disposed on the nozzle surface region. The fluid ejectors correspond to the ejection chambers. Each one of the fluid ejectors selectively ejects printing fluid through a corresponding ejection nozzle. The plurality of heating resistors corresponds to the non-ejection chambers. The heating resistors selectively provide heat to the end regions while not ejecting printing fluid through the ejection nozzles.
Abstract translation: 打印头芯片包括端部区域，喷嘴表面区域，流体通道，喷射室，流体喷射器，非喷射室和加热电阻器。 喷嘴表面区域设置在端部区域之间。 流体通道包括相应的喷嘴。 喷嘴设置在喷嘴表面区域上。 流体喷射器对应于喷射室。 每个流体喷射器通过相应的喷嘴选择性地喷射打印流体。 多个加热电阻对应于非喷射室。 加热电阻器选择性地向端部区域提供热量，而不通过喷嘴喷射印刷流体。
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公开(公告)号：US11186089B2
公开(公告)日：2021-11-30
申请号：US16576223
申请日：2019-09-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Lawrence H. White , Thomas J. Cardinali , Michael Hager
Abstract: Printheads and methods for forming printheads are described herein. In one example, a printhead includes a single resistor window in a conducting layer within the printhead. The printhead also includes a number of resistors formed in a resistor film deposited over the single resistor window. The resistors have two different widths, and each of the two different widths ejects a different droplet size when energized.
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Patent Agency Ranking
公开(公告)号：US20170313077A1
公开(公告)日：2017-11-02
申请号：US15521285
申请日：2014-10-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Lawrence H White , Thomas J Cardinali , Michael Hager
CPC classification number: B41J2/1604 , B41J2/14129 , B41J2/1603 , B41J2/1626 , B41J2/1631 , B41J2/164 , B41J2/175
Abstract: Printheads and methods for forming printheads are described herein. In one example, a printhead includes a single resistor window in a conducting layer within the printhead. The printhead also includes a number of resistors formed in a resistor film deposited over the single resistor window. The resistors have two different widths, and each of the two different widths ejects a different droplet size when energized.
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公开(公告)号：US20170305170A1
公开(公告)日：2017-10-26
申请号：US15521287
申请日：2014-10-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Lawrence H White , Melinda M Valencia , Michael Hager
CPC classification number: B41J2/14 , B41J2/04595 , B41J2/1404 , B41J2/14129 , B41J2/1433 , B41J2/14427 , B41J2/175 , B41J2/2125 , B41J2/2146 , B41J2202/11
Abstract: Printheads and methods for forming printheads are described herein. In one example, a printhead includes a number of drop generators, wherein a pitch between each adjacent drop generator is substantially the same, and the drop generators alternate between a high drop weight (HDW) drop generator and a low drop weight (LDW) drop generator. The printhead also includes a flow channel from an ink source leading into an ejection chamber associated with each drop generator, wherein the flow channel comprises an inflow region proximate to the ink source, wherein an area of the inflow region is adjusted to control the flux of ink into the ejection chamber.
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公开(公告)号：US20200009867A1
公开(公告)日：2020-01-09
申请号：US16576223
申请日：2019-09-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Lawrence H. White , Thomas J. Cardinali , Michael Hager
Abstract: Printheads and methods for forming printheads are described herein. In one example, a printhead includes a single resistor window in a conducting layer within the printhead. The printhead also includes a number of resistors formed in a resistor film deposited over the single resistor window. The resistors have two different widths, and each of the two different widths ejects a different droplet size when energized.
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公开(公告)号：US10457048B2
公开(公告)日：2019-10-29
申请号：US15521285
申请日：2014-10-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Lawrence H White , Thomas J Cardinali , Michael Hager
Abstract: Printheads and methods for forming printheads are described herein. In one example, a printhead includes a single resistor window in a conducting layer within the printhead. The printhead also includes a number of resistors formed in a resistor film deposited over the single resistor window. The resistors have two different widths, and each of the two different widths ejects a different droplet size when energized.
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公开(公告)号：US20180290449A1
公开(公告)日：2018-10-11
申请号：US15570675
申请日：2015-07-15
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Lawrence H. White , David R. Thomas , Claire O'Cull , Michael Hager
Abstract: A fluid ejection device includes a substrate; a plurality of resistors on the substrate with separation of between 4 and 8 microns between adjacent resistors; an adhesion layer applied over the plurality of resistors; and a layer of silicon carbide (SiC) applied directly over the adhesion layer such that the silicon carbide is between adjacent resistors. A method of forming a fluid ejection device includes forming resistors and conductive traces attached to a substrate; depositing an adhesion layer over the resistors; depositing a silicon carbide (SiC) coating directly over the adhesion layer; and forming an epoxy layer over silicon carbide layer.
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