Liquid ejection head and image-forming apparatus using the same
AssigneeCanon Kabushiki Kaisha
InventorsMichinari Mizutani, Shuichi Murakami
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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.
Claims15
A liquid ejection head comprising a plurality of ejection openings arranged in a first direction and a plurality of ejection energy generating elements for ejecting liquid from the ejection openings, said liquid ejection head and a printing medium being subjected to relative movement, wherein
- each arrangement pitch of the ejection openings forming both end groups located in respective opposite end sections along the first direction is longer than an arrangement pitch of the ejection openings forming a central group located in a central section along the first direction, respectively,
- wherein the ejection openings forming the end groups are configured to eject the liquid for forming an image on the printing medium, and
- wherein ink droplets ejected from the ejection openings forming the end groups are drawn toward the central group to have a droplet pitch approximately equal a droplet pitch of ink droplets ejected from the ejection openings forming the central group.
Dependencies are inferred from the claim text.