| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink jet head capable of reducing the load to the driver of a piezoelectric element. SOLUTION: In the ink jet head using a plurality of piezoelectric elements of an ink jet recording apparatus, a head part 301 for a large diameter dot having the piezoelectric elements 315a subjected to polarization treatment so that a piezoelectric constant becomes (x) and a head part 302 for a small diameter dot having the piezoelectric element 315b subjected to polarization treatment so that a piezoelectric constant becomes x' different from (x) of the head part 301 for the large diameter dot are provided. |
