Ink-jet recording head

Details Ink-jet recording head Ink-jet recording head

1993-06-25

1995-01-10

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

310328, 310366, B41J 2045

Patent

active

053811712

ABSTRACT:
The ink-jet recording head including a piezoelectric vibrator 9 in which layers of a piezoelectric material and an electrode forming material are alternately stacked to form an active region 15 where segment electrodes 20 and common electrodes 21 overlap with each other in the center portion; a fixing substrate 8 to which the piezoelectric vibrator 9 is fixed; and a flow path component which contacts with the front end of the piezoelectric vibrator 9 and in which ink is compressed by the extension and contraction of the piezoelectric vibrator 9 to produce ink drops. In the ink-jet recording head, the piezoelectric vibrator 9 is contacted with the fixing substrate 8 only in the portion of the active region 15, and fixed thereto by an adhesive. When a drive signal is applied to the electrodes 20 and 21 of the piezoelectric vibrator 9, only the active region 15 where electrodes of the opposite polarities oppose to each other extends in the lamination direction. Since the edge portions which do not contribute to this extension operation are free from the fixing substrate 8, they contract while following the extension of the active region 15 as closely as possible.

REFERENCES:
patent: 4364068 (1982-12-01), Lewis
patent: 5153477 (1992-10-01), Tomura et al.

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