公开(公告)号：US10252527B2

公开(公告)日：2019-04-09

申请号：US15834353

申请日：2017-12-07

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： James A. Feinn ,  David P. Markel ,  Albert Nagao ,  Thomas R. Strand ,  Paul A. Richards ,  Lawrence H. White ,  Erik D. Torniainen

IPC: B41J2/14

Abstract: In some examples, a fluid nozzle includes an aperture comprising a first lobe that is shaped as an ellipse, and a second lobe that has a non-circular shape and has a different size than a size of the first lobe. The fluid nozzle further includes protrusions between the first and second lobes extending inward and forming a throat between the first and second lobes.

公开(公告)号：US20150340331A1

公开(公告)日：2015-11-26

申请号：US14818922

申请日：2015-08-05

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Lawrence H. White ,  Robert Vina ,  Terry Mcmahon ,  James R. Przybyla

IPC: H01L23/00

CPC classification number: H01L23/49822 ,  H01L21/76838 ,  H01L24/03 ,  H01L24/05 ,  H01L2224/0235 ,  H01L2224/02381 ,  H01L2224/0239 ,  H01L2224/024 ,  H01L2224/05013 ,  H01L2224/05024 ,  H01L2224/05092 ,  H01L2224/05553 ,  H01L2224/45124 ,  H01L2924/00014 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01073 ,  H01L2924/01079 ,  H01L2924/04642 ,  H01L2924/05042 ,  H01L2924/0534 ,  H01L2924/05432 ,  H01L2924/05442 ,  H01L2924/059 ,  H01L2924/05994 ,  H01L2924/1461 ,  H01L2924/01029 ,  H01L2924/00 ,  H01L2224/48

Abstract: A semiconductor device can include a substrate and a trace layer positioned in proximity to the substrate and including a trace for supplying an electrical connection to the semiconductor device. Conductive layers can be positioned in proximity to the trace layer and form a bond pad. A non-conductive thin film layer can be positioned between the trace layer and the conductive layers. The thin film layer can include a via to enable the electrical connection from the trace to the bond pad. A portion of the trace between the substrate and the plurality of conductive layers can have a beveled edge.

Abstract translation: 半导体器件可以包括基板和位于基板附近的迹线层，并且包括用于向半导体器件提供电连接的迹线。 导电层可以位于跟踪层附近并形成接合焊盘。 非导电薄膜层可以位于迹线层和导电层之间。 薄膜层可以包括通孔以使得能够从迹线到接合焊盘的电连接。 衬底和多个导电层之间的迹线的一部分可以具有斜边。

公开(公告)号：US11331918B2

公开(公告)日：2022-05-17

申请号：US16861119

申请日：2020-04-28

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Lawrence H. White ,  Arun K. Agarwal ,  Ron Burns

IPC: B41J2/14 ,  B41J2/175

Abstract: Printheads and printers are described herein. In one example, a printhead includes a plurality of nozzles configured to eject ink drops of different sizes wherein a low drop weight (LDW) drop is ejected through a nozzle with a circular bore (CB), and a high drop weight (HDW) drop is ejected through a nozzle with a non-circular bore (NCB).

公开(公告)号：US10562304B2

公开(公告)日：2020-02-18

申请号：US16139716

申请日：2018-09-24

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： James A. Feinn ,  Albert Nagao ,  Thomas R. Strand ,  David R. Thomas ,  Erik D. Torniainen ,  Lawrence H. White

IPC: B41J2/14

Abstract: An inkjet nozzle includes an aperture with a noncircular opening substantially defined by a polynomial equation. A droplet generator is also described which includes a firing chamber fluidically coupled to a fluid reservoir a heating resistor and a nozzle. The nozzle includes an aperture forming a passage from the firing chamber to the exterior of the droplet generator through a top hat layer. The nozzle is defined by a closed polynomial and has a mathematically smooth and mathematically continuous shape around aperture's perimeter wall, with two protrusions extending into the center of the aperture.

公开(公告)号：US10336070B2

公开(公告)日：2019-07-02

申请号：US15747966

申请日：2015-10-30

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Nicholas Matthew Cooper McGuinness ,  Alexander Govyadinov ,  Chris Bakker ,  Lawrence H. White ,  Paul A. Richards

IPC: B41J2/14

Abstract: According to an example, a fluid ejection device may include a fluid feed slot, a plurality of fluid ejection chambers in fluid communication with the fluid feed slot, a plurality of drop ejecting elements, in which a drop ejecting element of the plurality of drop ejecting elements is positioned within each of the plurality of fluid ejection chambers, a fluid circulation channel in fluid communication at a first end of the fluid circulation channel with the fluid feed slot and in fluid communication at multiple second ends of the fluid circulation channel with the plurality of fluid ejection chambers, and a fluid circulating element within the fluid circulation channel. The fluid ejection device may also include a bubble dissipating structure positioned within the fluid circulation channel outside of the plurality of fluid ejection chambers.

公开(公告)号：US20190023010A1

公开(公告)日：2019-01-24

申请号：US16139716

申请日：2018-09-24

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： James A. Feinn ,  Albert Nagao ,  Thomas R. Strand ,  David R. Thomas ,  Erik D. Torniainen ,  Lawrence H. White

IPC: B41J2/14

CPC classification number: B41J2/1433 ,  B41J2/14016 ,  B41J2002/14387 ,  B41J2002/14475 ,  B41J2202/11

Abstract: An Inkjet nozzle includes an aperture with a noncircular opening substantially defined by a polynomial equation. A droplet generator is also described which includes a firing chamber fluidically coupled to a fluid reservoir a heating resistor and a nozzle. The nozzle includes an aperture forming a passage from the firing chamber to the exterior of the droplet generator through a top hat layer. The nozzle is defined by a closed polynomial and has a mathematically smooth and mathematically continuous shape around aperture's perimeter wall, with two protrusions extending into the center of the aperture.

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

IPC: B41J2/16 ,  B41J2/14

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.

公开(公告)号：US20190023022A1

公开(公告)日：2019-01-24

申请号：US16141907

申请日：2018-09-25

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Nick McGuinness ,  Lawrence H. White ,  Paul A. Richards

IPC: B41J2/19 ,  B41J2/18 ,  B41J2/175 ,  B41J2/14

Abstract: A fluid ejection device includes a fluid slot, a fluid ejection chamber communicated with the fluid slot, a drop ejecting element within the fluid ejection chamber, a fluid circulation channel communicated at a first end with the fluid slot and communicated at a second end with the fluid ejection chamber, and a particle tolerant architecture within the fluid circulation channel at the second end.

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

IPC: B41J2/14 ,  B41J2/16

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.

公开(公告)号：US08944549B2

公开(公告)日：2015-02-03

申请号：US13924799

申请日：2013-06-24

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Dustin W. Blair ,  Lawrence H. White ,  Sean P. McClelland

IPC: B41J2/045 ,  B41J2/07 ,  B41J2/14

CPC classification number: B41J2/07 ,  B41J2/04508 ,  B41J2/04551 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/1433 ,  B41J2/2054 ,  B41J2002/14475

Abstract: Nozzle layouts for printheads are described. In an example, a printhead includes a first set of drop ejectors having orifices with circular bores, and a second set of drop ejectors having orifices with non-circular bores. A processor receives printing data representing an image to be printed to media, and provides firing data to the printhead for activating the drop ejectors. The firing data selects the drop ejectors with the circular bores to print graphic elements of the image and selecting the drop ejectors with the non-circular bores to print textual elements or line elements of the image.

Abstract translation: 描述打印头的喷嘴布局。 在一个示例中，打印头包括具有圆形孔的孔的第一组液滴喷射器，以及具有非圆形孔的孔的第二组喷射器。 处理器接收表示要打印到介质的图像的打印数据，并向打印头提供点火数据以激活液滴喷射器。 点火数据选择具有圆形孔的液滴喷射器以打印图像的图形元素，并且使用非圆形孔选择墨滴喷射器来打印图像的文本元素或线元素。