Liquid ejecting head and liquid ejecting apparatus
AssigneeCanon Kabushiki Kaisha
InventorsChiaki Muraoka, Yukuo Yamaguchi, Hiromasa Amma, Takuya Iwano, Takeshi Sekino
Life of this patent
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Abstract
A configuration of a liquid ejecting head enables a stable, continuous ink supply with the off-carriage method, even if a force operates in the direction of joint needle insertion and removal. To this end, a joint opening that accepts insertion of a joint needle on a printing apparatus side is placed at a position closer to a joint face between an ejecting head and a sub tank unit than a positioning opening that engages with a positioning member on the printing apparatus side. Consequently, even if external force is produced due to coupling, the force exerted on the joint face that is a weak portion of an inkjet head may be minimized.
Claims8
A liquid ejecting head removably attachable to a printing apparatus provided with joint needles for flow of a fluid and positioning members for positioning, at least some of the joint needles being for supply of liquid as the fluid, the liquid ejecting head comprising:
- an ejecting head unit configured to eject liquid;
- and
- a sub tank unit configured to connect to the ejecting head unit at a first face of the sub tank unit and supply liquid to the ejecting head unit through the first face, wherein
- a plurality of joint openings that accepts insertion of the joint needles and that corresponds to all of the joint needles and a plurality of positioning openings that engages with the positioning members are provided on a second face of the sub tank unit, the second face intersecting with the first face,
- a distance from each of the positioning openings to the first face is longer than a distance from each of the joint openings to the first face, and
- each of the positioning openings is located at an end of the second face distal to the first face.
A liquid ejecting apparatus including a liquid ejecting head removably attachable to a printing apparatus provided with joint needles for flow of a fluid and positioning members for positioning, and a carriage on which the liquid ejecting head is mounted, at least some of the joint needles being for supply of liquid as the fluid, the liquid ejecting head comprising:
- an ejecting head unit configured to eject liquid;
- and
- a sub tank unit configured to connect to the ejecting head unit at a first face of the sub tank unit and supply liquid to the ejecting head unit through the first face, wherein
- a plurality of joint openings that accepts insertion of the joint needles and that corresponds to all of the joint needles and a plurality of positioning openings that engages with the positioning members are provided on a second face of the sub tank unit, the second face intersecting with the first face,
- a distance from each of the positioning openings to the first face is longer than a distance from each of the joint openings to the first face,
- each of the positioning openings is located at an end of the second face distal to the first face, and
- by causing the carriage to move relative to a print medium while causing the liquid ejecting head to eject ink according to print data, an image is printed onto the print medium.
Dependencies are inferred from the claim text.