Patent · US Active

Passivation of ring electrodes

US8851637B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

FUJIFILM Corporation · JP

Inventors

Youming Li · San Jose, US
Yoshikazu Hishinuma · Yokohama, JP
Jeffrey Birkmeyer · San Jose, US

Key dates

Filing date	Feb 28, 2013
Grant date	Oct 7, 2014
Priority date	—
Expiry date	Feb 28, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J2/164
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An inkjet device includes a pumping chamber bounded by a wall, a piezoelectric layer disposed above the pumping chamber, a ring electrode having an annular lower portion disposed on the piezoelectric layer. A moisture barrier layer covers a remainder of the piezoelectric layer over the pumping chamber that is not covered by the annular lower portion of the ring electrode.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.