| 摘要 |
An ink jet printing device includes a first electrode, a printing head of ink jet type having at least one second electrode facing the first electrode for discharging ink from the second electrode toward the first electrode in response to a voltage applied between the first and second electrodes, and printing control unit for activating the second electrode according to data. The printing control unit controls the amount of ink discharged from the printing head by varying the waveform of voltage applied between the first and second electrodes according to concentration data.
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