Piezoelectric type ink-jet printing head having a pressure chamber plate which is less flexible than piezoelectric elements
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United States of America Patent
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Dec 28, 1999
Grant Date -
N/A
app pub date -
Aug 21, 1995
filing date -
Jan 18, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A piezoelectric type ink-jet printing head including a pressure chamber plate having a plurality of pressure chambers and a plurality of ink supply ports for supplying ink into the respective pressure chambers, a nozzle plate having a plurality of nozzles and a piezoelectric element having a surface, at least parts thereof defining a plurality of displacement portion. The nozzle plate is attached to one of the surfaces of the pressure chamber plate, in such a manner that the respective nozzles are connected to the respective pressure chambers. The other surface of the pressure chamber plate is attached to the piezoelectric element, in such a manner that each of the displacement portions of the piezoelectric element defines at least one of walls of each of the pressure chambers.
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