| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jet head capable of surely removing bubbles which invade a reservoir. SOLUTION: A channel formation substrate 15 consists of a (110) cubic silicon single crystal substrate. Pressure generation chambers 4 and supply paths 2 for a liquid to be jetted are constructed integrally by walls 4a and 2b, by half etching to make a width of the wall 2b for partitioning the supply path 2 larger than a width of the wall 4a for partitioning the pressure generation chamber 4. A leading end 2a of the wall 2b for partitioning the supply path 2 is made close to an end of a wall 3a for partitioning the reservoir 3. Therefore, a negative pressure applied from a nozzle opening is limited by the wall of each supply path 2 and acts concentratedly to bubbles. COPYRIGHT: (C)2004,JPO
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