Printing head for ink-jet printer

Details Printing head for ink-jet printer Printing head for ink-jet printer

1991-11-13

1994-02-22

Fuller, Benjamin R.

Recorders

Markers and/or driving means therefor

With ink supply to marker

B41J 2045, B41J 215

Patent

active

052892093

ABSTRACT:
An ink-jet printing head comprises a laminated unit integrally formed as a sintered ceramic product and including a bottom insulating plate element, a top insulating plate element, and a piezoelectric plate element between the bottom and top insulating plate element, the laminated unit having a pressure chamber formed at the piezoelectric plate element fillable with an ink, the piezoelectric plate element having electrode layers formed on opposite surfaces thereof surrounding the pressure chamber, the laminated unit also being provided with an orifice in communication with the pressure chamber. The piezoelectric plate element is constituted such that its thickness is reduced upon applying a drive pulse voltage thereto, resulting in a decrease of the pressure chamber volume, whereby an ink-jet drop is ejected from the orifice.

REFERENCES:
patent: 4387383 (1983-06-01), Sayko
patent: 4392145 (1983-06-01), Parkola
patent: 4578686 (1986-03-01), Vollert
patent: 4605939 (1986-08-01), Hubbard et al.
patent: 4752789 (1988-06-01), Maltsev
Utsumi et al., "Designed-Space Forming Technology in Ceramics" IMC 1986 Proceedings, May 1986, pp. 36-42.

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