| US 7,517,059 B2 | ||
| Liquid jet head and method for producing the same | ||
| Kazuhiro Hayakawa, Kawasaki (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Apr. 13, 2006, as Appl. No. 11/279,633. | ||
| Claims priority of application No. 2005-137153 (JP), filed on May 10, 2005. | ||
| Prior Publication US 2006/0256162 A1, Nov. 16, 2006 | ||
| Int. Cl. B41J 2/05 (2006.01) | ||
| U.S. Cl. 347—64 | 6 Claims |
| 1. A liquid jet head comprising:
a substrate in which a discharge energy generating element is provided on one surface;
a discharge port forming member which is provided with a discharge port corresponding to the discharge energy generating element,
the discharge port discharging a liquid droplet, the discharge ort forming member being provided on the substrate;
a liquid flow path which is formed to be communicated with the discharge port; and
a supply port which is formed by piercing through the one surface of the substrate to a back surface of the substrate, the
supply port communicating with the liquid flow path,
wherein an inner wall surface of the supply port and a part of a surface of an inner wall, formed by the discharge port forming
member, of the liquid flow path are covered with a protective layer made of the same material.
|