Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-09-05
2006-09-05
Pham, Hai (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S071000, C347S072000
Reexamination Certificate
active
07101026
ABSTRACT:
To provide an ink jet recording head with a decreased initial deflection amount of a diaphragm and an ink jet recorder comprising the ink jet recording head. An ink jet recording head which has a flow passage formation substrate10where pressure generation chambers12communicating with nozzle openings are defined and a piezoelectric element being placed on one side of the flow passage formation substrate10via a diaphragm and having at least a lower electrode60,a piezoelectric layer70,and an upper electrode80,characterized in that at least one of layers deposited together with the piezoelectric layer70is a compression film50having a compressive stress and the compression film50has at least a part in a thickness direction removed in at least a part of an area opposed to the pressure generation chamber, whereby the stress of the whole film is decreased.
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Sakai Shinri
Shimada Masato
Nguyen Lam S.
Pham Hai
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