Method for ejecting liquid, liquid ejection head and image-forming apparatus using the same
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United States of America Patent
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-
Feb 15, 2005
Grant Date -
Mar 27, 2003
app pub date -
Sep 25, 2002
filing date -
Sep 26, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
In an liquid ejection head according to the present invention having a plurality of ejection openings arranged in a predetermined direction and a plurality of electro-thermal transducers for ejecting liquid from the ejection openings and being in relative motion with a printing medium, a kinetic energy of the liquid ejected from each ejection opening constituting an end group disposed in the respective opposite end section along the predetermined direction is larger than a kinetic energy of the liquid ejected from each ejection opening constituting a central group disposed in a central section along the predetermined direction. According to the present invention, it is possible to prevent an ink droplet ejected from the ejection opening in the end group from being deviated toward the central section along the predetermined direction, whereby the generation of white streaks is avoidable when a solid printing is carried out.
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