公开(公告)号：US10179455B2

公开(公告)日：2019-01-15

申请号：US15652531

申请日：2017-07-18

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

Inventor： Brian J. Keefe ,  Joseph E. Scheffelin ,  James W. Ring ,  Mark A. Devries

IPC: B41J2/18 ,  B41J2/17 ,  B41J2/175 ,  B41J29/38

Abstract: A print module includes a printhead die, an input regulator to regulate input fluid pressure to the die, and an output regulator to regulate output fluid pressure from the die. A method includes receiving fluid at an input regulator to a print module, creating a fluid pressure differential within the print module between the input regulator and an output regulator, flowing fluid from the input regulator through a printhead die and to an output regulator using the pressure differential, and drawing fluid from the output regulator.

公开(公告)号：US20170313088A1

公开(公告)日：2017-11-02

申请号：US15652531

申请日：2017-07-18

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

Inventor： Brian J. Keefe ,  Joseph E. Scheffelin ,  James W. Ring ,  Mark A. Devries

IPC: B41J2/17 ,  B41J2/175 ,  B41J2/18

CPC classification number: B41J2/17 ,  B41J2/175 ,  B41J2/17563 ,  B41J2/17596 ,  B41J2/18 ,  B41J29/38

Abstract: A print module includes a printhead die, an input regulator to regulate input fluid pressure to the die, and an output regulator to regulate output fluid pressure from the die. A method includes receiving fluid at an input regulator to a print module, creating a fluid pressure differential within the print module between the input regulator and an output regulator, flowing fluid from the input regulator through a printhead die and to an output regulator using the pressure differential, and drawing fluid from the output regulator.

公开(公告)号：US10654275B2

公开(公告)日：2020-05-19

申请号：US16217352

申请日：2018-12-12

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

Inventor： Brian J. Keefe ,  Joseph E. Scheffelin ,  James W. Ring ,  Mark A. Devries

IPC: B41J2/17 ,  B41J2/175 ,  B41J2/18 ,  B41J29/38

Abstract: A fluid injection module may include a fluid ejection die, a die carrier, a bypass fluid passage in at least one pressure regulator. The fluid ejection die may include nozzle orifices on a front face of the die, first and second fluid passages extending through the die and a microchannel extending from the first fluid passage to the second fluid passage proximate the nozzle orifices to circulate fluid from the first fluid passage to the second fluid passage. Third and fourth fluid passages may extend through the die carrier. The bypass fluid passage may extend from the third fluid passage to the fourth fluid passage while being connected to the first fluid passage and the second fluid passage. The at least one pressure regulator is to induce pressure differential driven fluid flow across the microchannel and across the bypass fluid passage.

公开(公告)号：US10507662B2

公开(公告)日：2019-12-17

申请号：US16125745

申请日：2018-09-09

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

Inventor： Brian J. Keefe ,  Joseph E. Scheffelin ,  James W. Ring ,  Mark A. Devries

IPC: B41J2/17 ,  B41J2/175 ,  B41J2/18 ,  B41J29/38

Abstract: A print module may include a printhead die. The printhead die may include a chamber layer having ink chambers and micro-channels formed in the chamber layer. The print module may further include a die carrier including manifold passages through which ink flows to and from the printhead die and dual pressure regulators to flow fluid through the micro-channels of the printhead die.

公开(公告)号：US20190001686A1

公开(公告)日：2019-01-03

申请号：US16125745

申请日：2018-09-09

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

Inventor： Brian J. Keefe ,  Joseph E. Scheffelin ,  James W. Ring ,  Mark A. Devries

IPC: B41J2/17 ,  B41J29/38 ,  B41J2/175 ,  B41J2/18

CPC classification number: B41J2/17 ,  B41J2/175 ,  B41J2/17563 ,  B41J2/17596 ,  B41J2/18 ,  B41J29/38

Abstract: A print module may include a printhead die. The printhead die may include a chamber layer having ink chambers and micro-channels formed in the chamber layer. The print module may further include a die carrier including manifold passages through which ink flows to and from the printhead die and dual pressure regulators to flow fluid through the micro-channels of the printhead die.

公开(公告)号：US20190111687A1

公开(公告)日：2019-04-18

申请号：US16217352

申请日：2018-12-12

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

Inventor： Brian J. Keefe ,  Joseph E. Scheffelin ,  James W. Ring ,  Mark A. Devries

IPC: B41J2/17 ,  B41J2/175 ,  B41J2/18 ,  B41J29/38

Abstract: A fluid injection module may include a fluid ejection die, a die carrier, a bypass fluid passage in at least one pressure regulator. The fluid ejection die may include nozzle orifices on a front face of the die, first and second fluid passages extending through the die and a microchannel extending from the first fluid passage to the second fluid passage proximate the nozzle orifices to circulate fluid from the first fluid passage to the second fluid passage. Third and fourth fluid passages may extend through the die carrier. The bypass fluid passage may extend from the third fluid passage to the fourth fluid passage while being connected to the first fluid passage and the second fluid passage. The at least one pressure regulator is to induce pressure differential driven fluid flow across the microchannel and across the bypass fluid passage.