公开(公告)号：US20180215150A1

公开(公告)日：2018-08-02

申请号：US15748285

申请日：2015-10-30

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

Inventor： Vincent C. KORTHUIS ,  Eric T. MARTIN ,  Michael W. CUMBIE ,  Scott A. LINN

IPC: B41J2/14 ,  B41J2/175

CPC classification number: B41J2/14056 ,  B41J2/1404 ,  B41J2/175 ,  B41J2/17596 ,  B41J2002/14467 ,  B41J2202/11 ,  B41J2202/12

Abstract: According to an example, a printing system may include a drop ejecting element and a fluid circulating element corresponding to the drop ejecting element. The printing system may also include a logic device that is to receive a data stream addressed to the drop ejecting element, determine whether the data stream indicates that the drop ejecting element is to be energized, and in response to a determination that the data stream does not indicate that the drop ejecting element is to be energized, energize the fluid circulating element.

公开(公告)号：US20240051292A1

公开(公告)日：2024-02-15

申请号：US18266803

申请日：2021-01-11

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

Inventor： Vincent C. KORTHUIS ,  Rogelio CICILI ,  Eric T. MARTIN ,  Kellie Susanne JENSEN ,  James R. PRZYBYLA

IPC: B41J2/045

CPC classification number: B41J2/0458 ,  B41J2/04541 ,  B41J2/04543

Abstract: In some examples, a fluidic die includes fluidic actuators, switches, and electrically conductive lines in an electrically conductive layer of the fluidic die. The electrically conductive lines electrically connect the switches to respective actuators. A first dimension of a first electrically conductive line is different from a second dimension of a second electrically conductive line to match a first resistance of the first electrically conductive line having a first length to a second resistance of the second electrically conductive line having a second length different from the first length.

公开(公告)号：US20190210361A1

公开(公告)日：2019-07-11

申请号：US16306611

申请日：2016-10-03

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

Inventor： Eric MARTIN ,  Vincent C. KORTHUIS

IPC: B41J2/045 ,  B41J2/18

CPC classification number: B41J2/04541 ,  B41J2/0458 ,  B41J2/04586 ,  B41J2/18 ,  B41J2202/12

Abstract: In some examples, a fluid ejection device includes a nozzle to dispense fluid, and a recirculation controller to control recirculating of the nozzle. The recirculation controller is to receive, from a fluid ejection controller, an indication corresponding to a start of a sampling time interval, determine, during the sampling time interval, whether a firing event corresponding to firing of the nozzle has occurred, and in response to determining that the firing event has not occurred, cause activation of a recirculation pump to recirculate fluid through a chamber of the nozzle.