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AssigneeCanon Kabushiki Kaisha
InventorsTakeshi Yazawa, Naoji Otsuka, Hitoshi Sugimoto, Kiichiro Takahashi, Hitoshi Nishikori, Osamu Iwasaki, Minoru Teshigawara, Toshiyuki Chikuma, Satoshi Seki
Estimating the term…
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.
A liquid ejection head comprising:
A liquid ejection head comprising:
A liquid ejection head comprising:
A liquid ejection head comprising:
A liquid ejection head comprising a plurality of opening groups which are in communication with respective ones of a plurality of common liquid chambers via liquid channels and which are opened to atmosphere, said plurality of opening groups each having a plurality of ejection ports arranged at predetermined intervals to eject the liquid to a printing medium, and liquid discharging ports disposed adjacent to the ejection ports which are located at each end of the plurality of the ejection ports in an arrangement direction thereof, the liquid discharging ports not relating to formation of images on the printing medium,
A liquid ejection head comprising a plurality of opening groups which are in communication with respective ones of a plurality of common liquid chambers via liquid channels and which are opened to atmosphere, said plurality of opening groups each having a plurality of ejection ports arranged at predetermined intervals to eject the liquid to a printing medium and liquid discharging ports disposed adjacent to the ejection ports which are located at each end of the plurality of the ejection ports in an arrangement direction thereof, the liquid discharging ports not relating to formation of images on the printing medium,
A liquid ejection head comprising a plurality of head portions each having a liquid supplying passage having one end in communication with a liquid supplying port to which a liquid is supplied, the liquid supplying passage branching into a plurality of branching paths, a plurality of common liquid chambers which are in communication with respective ones of the plurality of branching paths, and a plurality of opening groups which are in communication with the respective common liquid chambers via liquid channels and which are opened to atmosphere, at least one of all the opening groups having a different number of openings from those of the other opening groups,
A liquid ejection head comprising:
A liquid ejection head comprising a plurality of head portions each having a liquid supplying passage having one end in communication with a liquid supplying port to which a liquid is supplied, the liquid supplying passage branching into a plurality of branching paths, a plurality of common liquid chambers which are in communication with respective ones of the plurality of branching paths, and a plurality of opening groups which are in communication with the respective common liquid chambers via liquid channels and which are opened to atmosphere, at least one of all the opening groups having at least one opening, the area of which is different from those of the openings of the other opening groups;
A liquid ejection head comprising:
Dependencies are inferred from the claim text.