Ink jet recording apparatus with efficient and reliable ink supply
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United States of America Patent
Stats
-
Jan 16, 1996
Grant Date -
N/A
app pub date -
Oct 14, 1993
filing date -
Oct 15, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ink jet recording apparatus includes an orifice for ejecting ink; a heater for generating thermal energy to produce a bubble to eject the ink; an ink passage for supplying ink to the orifice, the ink passage being provided with the heater; an ink container for containing ink to be supplied to the ink passage, the ink container retaining the ink, using capillary force; wherein the following is satisfied: V.sub.OH >[(R'+P)/(F'+R'+P).times.(F+R)/R+1 ]Vd where V.sub.OH is a volume of the ink passage from the orifice to an edge of the heater adjacent the orifice, Vd is a volume of ink ejected from the orifice, F is a flow resistance from a center of the heater to the orifice; R is a flow resistance from a center of the heater to the ink container; F' is a flow resistance from a maximum bubble produced on the heater to the orifice; R' is a flow resistance from a maximum bubble produced on the heater to the ink container, and P is a flow resistance of the ink container.
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