公开(公告)号：US20140375710A1

公开(公告)日：2014-12-25

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: B41J2/07 ,  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。

公开(公告)号：US11230098B2

公开(公告)日：2022-01-25

申请号：US16603581

申请日：2018-05-11

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

Inventor： Zhizhang Chen ,  Lawrence H. White

IPC: B41J2/14 ,  B41J2/16 ,  C23C16/455 ,  C23C16/40

Abstract: A passivation stack can include a laminated film, including from 8 to 40 alternating layers of HfO2 and SiO2. The layers can individually have a thickness from 8 Angstroms to 40 Angstroms, and the laminated film can have a total thickness of 280 Angstroms to 600 Angstroms. The passivation stack can also include a barrier film of HfO2 having a thickness from 50 Angstroms to 300 Angstroms applied to the laminated film.

公开(公告)号：US20210331471A1

公开(公告)日：2021-10-28

申请号：US16603581

申请日：2018-05-11

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

Inventor： Zhizhang Chen ,  Lawrence H. White

IPC: B41J2/14 ,  B41J2/16 ,  C23C16/40 ,  C23C16/455

Abstract: A passivation stack can include a laminated film, including from 8 to 40 alternating layers of HfO2 and SiO2. The layers can individually have a thickness from 8 Angstroms to 40 Angstroms, and the laminated film can have a total thickness of 280 Angstroms to 600 Angstroms. The passivation stack can also include a barrier film of HfO2 having a thickness from 50 Angstroms to 300 Angstroms applied to the laminated film.

公开(公告)号：US20200254759A1

公开(公告)日：2020-08-13

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：US20180215146A1

公开(公告)日：2018-08-02

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

CPC classification number: B41J2/1404 ,  B41J2/14056 ,  B41J2202/11 ,  B41J2202/12

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：US20180104953A1

公开(公告)日：2018-04-19

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

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

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：US20160325547A1

公开(公告)日：2016-11-10

申请号：US15111269

申请日：2014-01-29

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

Inventor： Lawrence H. White ,  Anthony M. Fuller ,  Huyen Pham

IPC: B41J2/14 ,  B41J2/16

CPC classification number: B41J2/14112 ,  B41J2/14129 ,  B41J2/1601 ,  B41J2/1626 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/3351 ,  B41J2/33515 ,  B41J2/3353 ,  B41J2/3354 ,  B41J2/3357

Abstract: The present disclosure includes a method of fabricating a thermal ink jet printhead including depositing a first metal layer having a thickness to form a power bus, deposing a first dielectric layer, forming a via in the first dielectric layer to connect the first metal layer to a second metal layer, depositing the second metal layer, depositing a resistive layer, forming a thermal resistor in the resistive layer, depositing a second dielectric layer, and removing a portion of the second dielectric layer.

Abstract translation: 本公开包括一种制造热喷墨打印头的方法，包括沉积具有厚度的第一金属层以形成电源总线，去除第一电介质层，在第一电介质层中形成通孔以将第一金属层连接到 第二金属层，沉积第二金属层，沉积电阻层，在电阻层中形成热电阻，沉积第二电介质层，以及去除第二电介质层的一部分。

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

IPC: B41J2/14 ,  B41J2/16 ,  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.

公开(公告)号：US20210046757A1

公开(公告)日：2021-02-18

申请号：US17070431

申请日：2020-10-14

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

Inventor： Rio Rivas ,  Lawrence H. White ,  Ed Friesen ,  Erik D. Torniainen

IPC: B41J2/14 ,  B41J2/16

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.

公开(公告)号：US20210039391A1

公开(公告)日：2021-02-11

申请号：US16978859

申请日：2018-04-26

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

Inventor： Lawrence H. White ,  Angel L. Morales ,  Erik D. Torniainen

IPC: B41J2/14

Abstract: A fluid ejection unit may include a fluid supply passage, a fluid circulation loop having a first segment extending from the fluid supply passage, a second segment extending from the fluid supply passage and a bend connecting the first segment and the second segment, a fluid ejector along the second segment, the fluid ejector comprising a fluid ejection orifice and a fluid actuator and a fluid bypass spaced from the fluid actuator and in parallel with the bend to connect the first segment and the second segment.