Impact-valve printhead for ink jet printing
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United States of America Patent
Stats
-
Aug 13, 1991
Issued Date -
N/A
app pub date -
Jan 22, 1991
filing date -
Nov 3, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ink jet chamber communicates with an ink reservoir through an opening in a diaphragm plate. The chamber also includes a nozzle through which ink may be ejected on demand. A mass, such as a ball, is reciprocally driven into the diaphragm plate. The ball, upon striking the diaphragm, closes the chamber opening, pressurizing the ink in the chamber to eject a droplet from the nozzle. The ball is driven by a printer driver wire to which it may be attached. Large arrays may be constructed.
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