| 摘要 |
An ink jet apparatus which is easy to change parameters of a driving signal to be applied to an ink jet head depending on desired ink drop volume is provided. In steps S22, S24, S26 and S13, reference voltage es, reference frequency fs and waveform parameter are modified. Based on these modified parameters, the reference volume cs modified in step S16 is compared in step S17 with unit volume ci inputted in step S11. The modification of the reference parameters and the reference volume cs, and comparison between the reference volume cs and the unit volume ci are repeated till a difference is equal to or lower than a predetermined threshold. The respective reference parameters when the difference is equal to or lower than the predetermined threshold are determined as the parameters of the driving signal.
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