Liquid ejection head and image-forming apparatus using the same
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United States of America Patent
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Sep 13, 2011
Grant Date -
Feb 12, 2009
app pub date -
Oct 14, 2008
filing date -
Aug 31, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A liquid ejection head according to the present invention includes a plurality of ejection openings arranged in a first direction and a plurality of electro-thermal transducers for ejecting liquid from the ejection openings, the liquid ejection head and a printing medium being subjected to the relative movement, wherein an arrangement pitch of the ejection openings forming an end group located in the respective opposite end section along the first direction is longer than an arrangement pitch of the ejection openings forming a central group located in the central section along the first direction. According to the present invention, it is possible to eliminate white streaks which may generate in a solid printing.
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