Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1992-12-17
1999-11-23
Fuller, Benjamin R.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
B41J 2045
Patent
active
059888008
ABSTRACT:
An ink jet printing head which both realizes a higher density and prevents a failure in ink jetting and deterioration in the printing quality. A photosensitive glass substrate which allows anisotropic etching is provided with a multiplicity of individual ink passages each having a narrow width and a large depth formed in an array by anisotropic etching in such a manner that each extends from the rear end of the glass substrate to the forward end thereof. A diaphragm is attached to the surface of the glass plate on which the individual ink passages are formed in such a manner as to cover all the individual ink passages. A common electrode is provided on the diaphragm, and individual piezoelectric elements are fixed to the common electrode at the portions corresponding to the individual ink passages. Individual electrodes are provided on the respective individual piezoelectric elements.
When a voltage is applied to the common electrode and the individual electrode, the portion of the diaphragm corresponding to the individual electrode is bent and deformed, so that the ink storing capacity of the corresponding individual ink passage is reduced and some of the ink in the individual ink passage is forced out.
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Amano Toshio
Ema Yasushi
Fujimoto Hisayoshi
Ishida Nobuhisa
Shimokata Akihiro
Dickens C.
Fuller Benjamin R.
Rohm & Co., Ltd.
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