Printing head for an ink jet printer with titanium plate comb

Details Printing head for an ink jet printer with titanium plate comb Printing head for an ink jet printer with titanium plate comb

1995-10-23

1999-03-23

Yockey, David F.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 72, B41J 2045

Patent

active

058867171

ABSTRACT:
A printing head for an ink jet printer is provided with a plurality of ink jet sets. Each of the ink jets. Each of the ink jets includes an ink nozzle through which ink is ejected; a pressure chamber communicated with the ink nozzle and having a diaphragm made of a flexible plate; and a piezoelectric member bonded on an outside of the diaphragm for deforming the diaphragm to eject ink through the ink nozzle from the pressure chamber. The piezoelectric member includes a layer, having titanium an upper PZT layer chemically bonded on an upper surface of the titanium layer and polarized in a first direction; and a lower PZT layer chemically bonded on a lower surface of the titanium layer and polarized in a second direction opposite to the first direction. The titanium layer includes an interconnecting member and titanium members interconnected to each other by the interconnecting member forming a single titanium plate comb having teeth corresponding to the titanium members extending from two sides of the interconnecting member.

REFERENCES:
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patent: 5530465 (1996-06-01), Hasegawa et al.
patent: 5592206 (1997-01-01), Watanabe et al.
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