| 摘要 |
PURPOSE:To print with a constant printing diameter at all times on recording paper of various kinds and qualities in which spreading amounts of ink are different to each other by a method wherein an operating means selectable in accordance with the quality of the recording paper is provided to control an exciting voltage supplied to the vibrator of a head. CONSTITUTION:Selection switches 10 of 3-4 series, for example, selectable in accordance with the kind of the recording paper 6 are provided to control the output signal of a vibrator driving circuit 5 in accordance with the pushed position of the switch 10 and vary the driving voltage of the supersonic vibrator 2. According to this system, the recording with a constant printing diameter may be effected at all times regardless of the quality of the recording paper 6. |
