公开(公告)号：US20170173969A1

公开(公告)日：2017-06-22

申请号：US15118393

申请日：2014-03-07

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY LP

Inventor： Ning GE ,  Patrick Leonard ,  Adam L. Ghozeil

IPC: B41J2/175

CPC classification number: B41J2/17566 ,  B41J2/04541 ,  B41J2/04566 ,  B41J2/04571 ,  B41J2/14072 ,  B41J2/1412 ,  B41J2/14129 ,  B41J2/14153 ,  B41J2002/14354 ,  B41J2202/18

Abstract: An example provides a fluid ejection device including a fluid feed slot, a fluid chamber between a nozzle layer and a passivation layer, and a printhead-integrated sensor to sense a property of a fluid in the fluid chamber. The sensor may include a ground electrode exposed to the fluid chamber through a via in the passivation layer.