| US 7,517,058 B2 | ||
| Ink jet recording head having structural members in ink supply port | ||
| Kazuhiro Hayakawa, Kanagawa (Japan); and Makoto Terui, Kanagawa (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Mar. 17, 2006, as Appl. No. 11/377,391. | ||
| Claims priority of application No. 2005-083556 (JP), filed on Mar. 23, 2005. | ||
| Prior Publication US 2006/0214995 A1, Sep. 28, 2006 | ||
| Int. Cl. B41J 2/05 (2006.01) | ||
| U.S. Cl. 347—63 [347/65] | 3 Claims |
| 2. An ink jet recording head comprising:
an orifice plate having orifices for discharging ink;
a substrate having a plurality of discharge pressure generating elements for discharging ink from said orifices and an ink
supply port for supplying ink to said discharge pressure generating elements;
a plurality of separate flow paths corresponding to said discharge pressure generating elements; and
a common flow path communicating with said separate flow paths and said ink supply port,
wherein said substrate includes a plurality of beam portions formed to divide said ink supply port,
a recess is formed in a region corresponding to said common flow path of said substrate, said recess extending to said separate
flow paths formed nearest to said beam portions, and
a short recess is formed in a region between said separate flow paths other than said separate flow paths formed nearest to
said beam portions and said ink supply port, and said short recess has a full length shorter than a full length of said recess
from said ink supply port to said separate flow paths.
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