公开(公告)号：US10118387B2

公开(公告)日：2018-11-06

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: B41J29/38 ,  B41J2/045

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：US20180290458A1

公开(公告)日：2018-10-11

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 ,  B41J2/18 ,  B41J2/14

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：US20180272699A1

公开(公告)日：2018-09-27

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

CPC classification number: B41J2/04541 ,  B41J2/0455 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/1404 ,  B41J2/14056 ,  B41J2/14112 ,  B41J2002/14338 ,  B41J2002/14467 ,  B41J2202/12 ,  B41J2202/13

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.

公开(公告)号：US09937714B2

公开(公告)日：2018-04-10

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：US20170320320A1

公开(公告)日：2017-11-09

申请号：US15526921

申请日：2014-12-02

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

Inventor： Eric T Martin ,  Chris Bakker ,  James R Przybyla

IPC: B41J2/045 ,  B41J2/07

CPC classification number: B41J2/04541 ,  B41J2/04548 ,  B41J2/0455 ,  B41J2/0458 ,  B41J2/07 ,  B41J2202/13

Abstract: Printheads and techniques for manufacturing printheads are disclosed. An example method includes forming drive circuit components in a circuit layer. The method also includes forming a fluidic device that causes fluid to be ejected from a nozzle. The method also includes forming an interconnect layer that couples the drive circuit components.

公开(公告)号：US20170313063A1

公开(公告)日：2017-11-02

申请号：US15521284

申请日：2014-10-31

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

Inventor： Alexander Govyadinov ,  Paula A Richards ,  Chris Bakker

IPC: B41J2/14

CPC classification number: B41J2/1404 ,  B41J2/14056 ,  B41J2/14201 ,  B41J2/175 ,  B41J2002/14306 ,  B41J2002/14467 ,  B41J2202/12

Abstract: A fluid ejection device includes a fluid slot, at least one fluid ejection chamber communicated with the fluid slot, a drop ejecting element within the at least one fluid ejection chamber, a fluid circulation channel communicated with the fluid slot and the at least one fluid ejection chamber, and a fluid circulating element communicated with the fluid circulation channel. The fluid circulating element is to provide on-demand circulation of fluid from the fluid slot through the fluid circulation channel and the at least one fluid ejection chamber.

公开(公告)号：US09676190B2

公开(公告)日：2017-06-13

申请号：US15339715

申请日：2016-10-31

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

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

IPC: B41J2/15 ,  B41J2/14

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 may include a substrate, an electrical connector and at least three liquid feed slots. The electrical connector is on a first side of the substrate and extends along the major dimension of the substrate. The electrical connector is connectable directly to an electrical interconnect to connect the print head die to a controller. The at least three liquid feed slots are formed in the substrate and extend along the major dimension of the substrate. Wherein at least one and less than all of the at least three liquid feed slots has an associated temperature sensor connected to the electrical connector.