Ink jet recording head having reduced stress concentration near

Details Ink jet recording head having reduced stress concentration near Ink jet recording head having reduced stress concentration near

1997-04-10

2000-07-18

Barlow, John

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 2045

Patent

active

060897015

ABSTRACT:
An ink-jet recording head comprising: an elastic sheet providing pressure generating chambers; nozzle orifices, each communicating with the pressure generating chamber; piezoelectric vibrators formed on the elastic sheet, each of the piezoelectric vibrators having, a lower electrode formed on the elastic sheet, a piezoelectric layer formed on the lower electrode, and an upper electrode formed on the piezoelectric layer such that the upper electrode faces the respective pressure generating chamber, wherein the upper electrodes of the piezoelectric vibrators are positioned independently of each other; an electrical insulator layer having windows, wherein the electrical insulator layer covers the upper electrodes; and a conductor pattern connecting with the upper electrodes via the windows of the electrical insulator layer.

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