Ink jet recording apparatus having a flow resistance element and driving method
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United States of America Patent
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-
Jun 12, 2001
Grant Date -
N/A
app pub date -
Oct 25, 1993
filing date -
Jun 15, 1990
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An ink jet recording head is provided having an ejection orifice for ejecting ink, an ink passage corresponding to that ejection orifice, and a thermal energy generator for heating ink in the passage to create a bubble. A flow resistance element is provided in the ink passage upstream of the thermal energy generator with respect to the direction of ink flow, and this element has a reduced ink passage area which serves to divide the bubble, improving ink jet operation. Further, the ink jet head can be driven by dividing plural thermal energy generations into groups and driving those groups so that a given group is driven before the bubble formed by a previously-driven group reaches its maximum size.
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