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1. (WO2018199895) FLUID EJECTION DIES INCLUDING STRAIN GAUGE SENSORS

Pub. No.:    WO/2018/199895    International Application No.:    PCT/US2017/029137
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Tue Apr 25 01:59:59 CEST 2017
IPC: B41J 29/393
B41J 2/135
G01L 1/16
B41J 2/07
Applicants: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventors: ANDERSON, Daryl E.
GARDNER, James
Title: FLUID EJECTION DIES INCLUDING STRAIN GAUGE SENSORS
Abstract:
A fluid ejection die includes a plurality of actuation devices to eject fluid drops, at least one strain gauge sensor to sense strain, and a comparator. The comparator is to provide a fault signal in response to the sensed strain exceeding an impact threshold.