Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1980-11-06
1982-11-09
Miller, Jr., George H.
Recorders
Markers and/or driving means therefor
With ink supply to marker
G01D 1318
Patent
active
043587810
ABSTRACT:
An ink jet writing head includes a housing shaped to provide an inner liquid chamber for containing ink therein, a piezoelectric transducer for generating short-duration pressure rises in the liquid in the inner chamber, and an outer liquid chamber which is separated by a dividing plate from the inner liquid chamber and connected thereto by a connecting channel formed in the dividing plate. The outer liquid chamber is of such an axial dimension that it may provide capillary action on the ink supplied from an ink supply source. The outer chamber is formed by an ink nozzle plate secured to a surface of the housing spaced from the dividing plate. The ink nozzle is axially aligned with the connecting channel to cause the ink in the outer chamber to leave the writing head in response to the pressure rise in the inner chamber. A spacer is provided in the other liquid chamber to maintain the axial dimension thereof at a predetermined value regardless of errors which might be produced during manufacture of the housing and assemblage of the writing head.
REFERENCES:
patent: 4106032 (1978-08-01), Miura et al.
patent: 4223324 (1980-09-01), Yamamori et al.
Miura Masayoshi
Mizoguchi Akira
Yamamori Kiyoshi
Matsushita Electric Industrial Company Limited
Miller Jr. George H.
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