| 摘要 |
<p>A process for preparing an ink jet head having a support (1), an electrothermal transducer provided on the support and having a heat-generating resistor (8) and a pair of electrodes (3a-3b) electrically connected to the heat-generating resistor, a first upper layer (4-1) provided on the electrothermal transducer, a second upper layer (4-2) provided on the first upper layer and a liquid path (6) communicated with a discharge opening for discharging liquid and formed on the support so as to correspond to the heat-generating portion of the electrothermal transducer formed between the pair of electrodes comprises the steps of: forming the first upper layer by the bias sputtering method at the absolute value of the bias voltage of 50V or less and forming the second upper layer by the bias sputtering method at the absolute value of the bias voltage higher than 50V.</p> |
