Liquid-ejecting head, liquid-ejecting method and liquid-ejecting printing apparatus
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United States of America Patent
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Mar 4, 2003
Grant Date -
N/A
app pub date -
Dec 28, 1999
filing date -
Dec 29, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention provides a liquid-ejecting head, a method of ejecting liquid, and a liquid-ejecting printing apparatus, which permit an image-printing with the high quality by stabilizing volumes, flying velocities, and deposition points of ejected liquid droplets and preventing the generation of splash or mist of the liquid droplets. Thus, a heater having a heating portion on the side of the liquid chamber which is broader than a heating portion of the opposite side of the liquid chamber relative to a projected point where a centroid of any cross section of the orifice in parallel with the substrate is projected on the substrate. A shape of a cross section of the orifice in parallel with the substrate which is projected on the substrate from the side of the orifice plate has a combination of two ellipse portions figures in which a centroid and a plan of the heater are coincident with each other.
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