公开(公告)号：US20190030890A1

公开(公告)日：2019-01-31

申请号：US16146812

申请日：2018-09-28

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

Inventor： Alexander Govyadinov ,  Chris Bakker

IPC: B41J2/14 ,  B41J2/045 ,  B41J2/135

Abstract: A fluid ejection device includes a fluid slot, a plurality of fluid ejection chambers communicated with the fluid slot, a plurality of drop ejecting elements one of each within one of the fluid ejection chambers, a plurality of fluid circulation channels each communicated with the fluid slot and one or more of the fluid ejection chambers, and a plurality of fluid circulating elements each communicated with one or more of the fluid circulation channels. The fluid circulating elements are to provide intermittent circulation of fluid from the fluid slot through the one or more of the fluid circulation channels and the one or more of the fluid ejection chambers.

公开(公告)号：US10118389B2

公开(公告)日：2018-11-06

申请号：US15521848

申请日：2014-10-31

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

Inventor： Alexander Govyadinov ,  Chris Bakker

IPC: B41J2/14 ,  B41J2/045 ,  B41J2/135

Abstract: A fluid ejection device includes a fluid slot, a plurality of fluid ejection chambers communicated with the fluid slot, a plurality of drop ejecting elements one of each within one of the fluid ejection chambers, a plurality of fluid circulation channels each communicated with the fluid slot and one or more of the fluid ejection chambers, and a plurality of fluid circulating elements each communicated with one or more of the fluid circulation channels. The fluid circulating elements are to provide intermittent circulation of fluid from the fluid slot through the one or more of the fluid circulation channels and the one or more of the fluid ejection chambers.

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：US20180050537A1

公开(公告)日：2018-02-22

申请号：US15673051

申请日：2017-08-09

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

Inventor： Chris Bakker ,  Eric Martin ,  Adam L Ghozeil

IPC: B41J2/045

CPC classification number: B41J2/04581 ,  B41J2/04541 ,  B41J2/0455 ,  B41J2/0458 ,  B41J2/04585 ,  B41J2/04588 ,  B41J2/175 ,  B41J2/17546 ,  B41J2/18

Abstract: A printhead includes an address line, data lines, a fire pulse line, and a plurality of primitives, each primitive corresponding to a different data line and including a plurality of activation devices, each activation device corresponding to a different address of a set of addresses. A buffer receives data packets, each data packet including address data representative of an address of the set of addresses and print data for each primitive corresponding to the address. For each data packet, the buffer directs the address data to address logic and places the print data on the respective data line, and the address logic encodes the address represented by the address data onto the address line. For each primitive, the activation device corresponding to the address on the address bus activates a corresponding primitive function based on the corresponding print data when a fire pulse is present on the fire pulse line.

公开(公告)号：US20170246863A1

公开(公告)日：2017-08-31

申请号：US15594568

申请日：2017-05-13

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

Inventor： Garrett E. Clark ,  Chris Bakker ,  Mark H. MacKenzie ,  Glenn D. McCloy

IPC: B41J2/045

CPC classification number: B41J2/04563 ,  B41J2/0454 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/14072 ,  B41J2/1433 ,  B41J2/155 ,  B41J2002/14491

Abstract: Staggered fluid ejection dies may include first, second and third fluid ejection dies, each of the dies having fluid feed passages between first and second long edges. And electrical interconnect may extend from a location proximate the first long edge of each of the fluid ejection dies. A temperature sensor may be supported proximate the second long edge of each of the fluid ejection dies. Each of the fluid ejection dies may omit temperature sensors proximate the first long edge.

公开(公告)号：US09221256B2

公开(公告)日：2015-12-29

申请号：US14418664

申请日：2012-09-25

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

Inventor： Garrett E. Clark ,  Chris Bakker ,  Mark H. MacKenzie ,  Michele D. Friesen

IPC: B41J2/14 ,  B41J2/16 ,  B41J2/21

CPC classification number: B41J2/1433 ,  B41J2/1404 ,  B41J2/14072 ,  B41J2/14145 ,  B41J2/21 ,  B41J2/2103 ,  B41J2/2128 ,  B41J2/2146 ,  B41J2002/14491

Abstract: A print head die is described. In one example, the print head die includes a substrate having liquid feed slots formed therein extending along a major dimension of the substrate and nozzles extending along opposite sides of each of the liquid feed slots; and electrical interconnect formed on the substrate along the major dimension adjacent a last one of the liquid feed slots. A first one of the liquid feed slots opposite the last liquid feed slot and farthest from the electrical interconnect supplies an ink using a higher drop volume than inks in other ones of the liquid feed slots. The last liquid feed slot supplies an ink having a higher contrast with the ink in the first liquid feed slot than with inks in other ones of the liquid feed slots.

Abstract translation: 描述打印头模具。 在一个示例中，打印头模具包括其中形成有沿着基板的主要尺寸延伸的液体进料槽的基板和沿每个液体进料槽的相对侧延伸的喷嘴; 以及沿着与最后一个液体进料槽相邻的主要尺寸在基底上形成的电互连。 与最后一个液体供给槽相对的最远的液体进料槽中的第一个液体进料槽与液体进料槽中的其它液体进料槽中的油墨相比，使用较高的液滴体积提供油墨。 最后的液体进料槽提供与第一液体进料槽中的油墨具有更高对比度的油墨，而不是其它液体进料槽中的油墨。

公开(公告)号：US20150239237A1

公开(公告)日：2015-08-27

申请号：US14418442

申请日：2012-09-25

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

Inventor： Garrett E. Clark ,  Chris Bakker ,  Mark H. MacKenzie ,  Glenn D. McCloy

IPC: B41J2/045

CPC classification number: B41J2/04563 ,  B41J2/0454 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/14072 ,  B41J2/1433 ,  B41J2/155 ,  B41J2002/14491

Abstract: A print head die with thermal control is described. In an example, a print head die includes a substrate having liquid feed slots formed therein extending along a major dimension of the substrate and nozzles extending along opposite sides of each of the liquid feed slots; a temperature sensor formed on the substrate adjacent to a first one of the liquid feed slots; and electrical interconnect formed on the substrate along the major dimension adjacent to a last one of the liquid feed slots farthest from the first liquid feed slot.

Abstract translation: 描述了具有热控制的打印头模具。 在一个示例中，打印头模具包括其中形成有沿着基板的主要尺寸延伸的液体进料槽的基板和沿着每个液体进料槽的相对侧延伸的喷嘴; 温度传感器，形成在与所述液体供给槽中的第一个相邻的所述基板上; 以及沿着与距离第一液体进料槽最远的最后一个液体进料槽相邻的主要尺寸在基底上形成的电互连。

公开(公告)号：US11345162B2

公开(公告)日：2022-05-31

申请号：US15570634

申请日：2015-07-14

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

Inventor： Alexander Govyadinov ,  Ron Burns ,  Erik D. Torniainen ,  Galen P. Cook ,  David P. Markel ,  Garrard Hume ,  Chris Bakker

IPC: B41J2/175 ,  B41J29/02 ,  B41J2/14 ,  B41J2/18

Abstract: A fluid recirculation channel for dispensing a plurality of fluid drop weights includes a number of sub-channels. The sub-channels include at least one pump channel, and a plurality of drop generator channels fluidically coupled to the at least one pump channel. The fluid recirculation channel further includes a number of pump generators incorporated into the at least one pump channel, a number of drop generators incorporated into drop generator channels, and a plurality of nozzles defined within the drop generator channels, the nozzles being at least as numerous as the number of drop generators.

公开(公告)号：US10668722B2

公开(公告)日：2020-06-02

申请号：US16397448

申请日：2019-04-29

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

Inventor： Chris Bakker ,  Eric Martin ,  Adam L Ghozeil

IPC: B41J2/045 ,  B41J2/175 ,  B41J2/18

Abstract: A printhead includes an address line, data lines, a fire pulse line, and a plurality of primitives, each primitive corresponding to a different data line and including a plurality of activation devices, each activation device corresponding to a different address of a set of addresses. A buffer receives data packets, each data packet including address data representative of an address of the set of addresses and print data for each primitive corresponding to the address. For each data packet, the buffer directs the address data to address logic and places the print data on the respective data line, and the address logic encodes the address represented by the address data onto the address line. For each primitive, the activation device corresponding to the address on the address bus activates a corresponding primitive function based on the corresponding print data when a fire pulse is present on the fire pulse line.

公开(公告)号：US10562296B2

公开(公告)日：2020-02-18

申请号：US15525119

申请日：2014-12-02

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

Inventor： Eric T Martin ,  Chris Bakker

IPC: B41J2/045 ,  B41J2/14

Abstract: Fluid ejection devices with multiple activation modes are disclosed. An example printhead assembly includes a fluid ejection nozzle, a first resistor fluidically coupled to the fluid ejection nozzle, and a second resistor fluidically coupled to the fluid ejection nozzle. The example printhead also includes an addressing circuit to receive a nozzle address and an activation mode to activate the fluid ejection nozzle. The activation mode determines which of the first resistor and the second resistor are to be energized.