Liquid ejecting head, suction recovering method, head cartridge and image forming apparatus
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United States of America Patent
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-
Oct 28, 2003
Grant Date -
Aug 22, 2002
app pub date -
Jan 30, 2002
filing date -
Jan 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 single liquid supplying port to which a liquid is supplied, a plurality of liquid supplying passages having one end in communication with the liquid supplying port, a plurality of common liquid chambers that are in communication with the other ends of the liquid supplying passages, respectively, and a plurality of ejection port groups which are in communication with the common liquid chambers via liquid channels and from which liquid droplets are ejected. A cross sectional area or length of the liquid supplying passage in communication with the ejection port group having a larger sum of opening areas of the ejection ports is set smaller than that of the liquid supplying passage that is in communication with the ejection port group having a smaller sum of opening areas of the ejection ports.
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