| 摘要 |
PURPOSE:To make an ink injection speed constant and quality of image stable by a method wherein a speed of the motor for feeding ink is controlled in response to a space between the ink drips sensed by an ink drip spacing sensor being arranged adjacent to a printing paper. CONSTITUTION:Ink drip 2 8n injected from the head 1 is selectively charged by a charging electric pole 3. The charged ink drip is deflected by the deflection electric pole 4 and printed on the printing paper 5. The ink drip which is not charged or is not deflected is corrected and recovered. Foreign materials stored in the ink are removed by a filter 7 and the ink is stored in the ink reservoir 8. A pump 9 pumps up the ink stored in the ink reservoir 8 and feeds the ink to the ink jet head 1 via a three-way valve 10. The pump 9 rotates a screw having V-groove by a servo-motor. |
