| 摘要 |
PROBLEM TO BE SOLVED: To provide a miniaturized and inexpensive ink jet head excellent in a printing quality by preventing mal-functioning of drive elements. SOLUTION: In the ink jet head, driver ICs 31, 32 as the plural drive elements to apply a voltage are provided on a printed board 13, and a power source line to input the drive voltage for operating the plural driver ICs 31, 32 is formed on the printed board 13 for the respective driver ICs 31, 32 as power source line patterns 35, 26. Thus, a voltage drop caused by the resistance of the power source line patterns 35, 36 formed on the printed board 13 is suppressed to supply a proper operating voltage to respective plural driver ICs 31, 32, for improving the print quality by preventing the mal-functioning of the driver ICs 31, 32, and making the ink jet head small size and inexpensive.
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