Ink jet method and apparatus
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United States of America Patent
Stats
-
Jul 10, 1984
Issued Date -
N/A
app pub date -
Jan 4, 1982
filing date -
Jan 30, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ink jet includes a variable volume chamber with an ink droplet ejecting orifice. The volume of the chamber is varied by a transducer which expands and contracts in a direction having at least a component extending parallel with the axis ink droplet ejection from the orifice. The transducer communicates with a moveable wall of the chamber which has a sufficiently small area such that the difference in the pressure pulse transit times from each point on the wall to the ink droplet ejection orifice is less than 1 microsecond.
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