| US 7,533,969 B2 | ||
| Ink jet print head substrate, ink jet print head, ink jet printing apparatus, and method of manufacturing ink jet print head substrate | ||
| Teruo Ozaki, Yokohama (Japan); Ichiro Saito, Yokohama (Japan); Sakai Yokoyama, Kawasaki (Japan); Kenji Ono, Setagaya-Ku (Japan); Satoshi Ibe, Yokohama (Japan); Kazuaki Shibata, Kawasaki (Japan); and Toshiyasu Sakai, Yokohama (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Apr. 21, 2006, as Appl. No. 11/407,980. | ||
| Claims priority of application No. 2005-132315 (JP), filed on Apr. 28, 2005; and application No. 2006-075236 (JP), filed on Mar. 17, 2006. | ||
| Prior Publication US 2006/0256160 A1, Nov. 16, 2006 | ||
| Int. Cl. B41J 2/05 (2006.01) | ||
| U.S. Cl. 347—61 [347/63] | 18 Claims |
| 1. An ink jet print head substrate comprising:
an ejection energy generation means to generate an ink ejection energy;
a fuse element capable of being blown by passing an electric current therethrough; and
a first and second layer overlying and underlying the fuse element;
wherein at least one of the first and second layer is formed of a first low-melting point material having a lower melting
point than that of the fuse element, the first low-melting point material forming a cavity therein by heat produced when the
fuse element is blown.
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