| US 7,549,734 B2 | ||
| Liquid discharge head | ||
| Yoshiyuki Imanaka, Kanagawa (Japan); Takuya Hatsui, Tokyo (Japan); Souta Takeuchi, Kanagawa (Japan); Takaaki Yamaguchi, Kanagawa (Japan); Takahiro Matsui, Tokyo (Japan); and Kousuke Kubo, Kanagawa (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Appl. No. 10/582,503 PCT Filed Nov. 01, 2005, PCT No. PCT/JP2005/020397 § 371(c)(1), (2), (4) Date Jun. 09, 2006, PCT Pub. No. WO2006/051762, PCT Pub. Date May 18, 2006. |
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| Claims priority of application No. 2004-326781 (JP), filed on Nov. 10, 2004. | ||
| Prior Publication US 2007/0165067 A1, Jul. 19, 2007 | ||
| Int. Cl. B41J 2/05 (2006.01); B41J 29/38 (2006.01) | ||
| U.S. Cl. 347—58 [347/12; 347/59; 347/60] | 8 Claims |
| 1. A liquid discharge head comprising:
a plurality of outlets for discharging liquid;
a plurality of liquid channels, each liquid channel communicating with a corresponding outlet;
an inlet for supplying liquid to the liquid channels, the inlet being provided on a substrate; and
a plurality of recording elements disposed in the corresponding liquid channel opposite to the plurality of outlets, each
recording element including a heating resistor provided on the substrate, wherein
the outlets include first outlets disposed relatively closer to the inlet and second outlets disposed relatively further from
the inlet and are arranged in a staggered pattern in which the first outlets and the second outlets are disposed alternately
on at least one side of the inlet,
the recording elements include first recording elements corresponding to the first outlets and second recording elements corresponding
to the second outlets, and
an aspect ratio based on the flow direction of the liquid channels of the first recording elements is greater than the aspect
ratio of the second recording elements, with the aspect ratio being defined as a ratio of a longer dimension to a shorter
dimension of each of the first and second recording elements.
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