| 摘要 |
PURPOSE:To keep a connection space between the printings at a specified value by a method wherein a charged value sensor is arranged at a suitable place to sense a position at which the ink drips are deflected, while both the maximum and the minimum values of a charging voltage are controlled. CONSTITUTION:Ink drips 2 supplied from the ink jet head 1-1 selectively charged by a loading electric pole are deflected to show a maximum value by deflection electric pole 3, a flying orbit of X1-X1 is drawn and the ink drips are printed on a printing paper 4 at a position of B2. Ink drips 2 deflected to a minimum value from the head 1-2 by the electric pole 3 draw a flying orbit of X2-X2 to show a printing at a position of B2. Ink drips 2 are struck at a crossing point C between X1 and X2, wires 7-1, 7-2... of the charging load sensors 6-1, 6-2... are arranged at the crossing point C. When the ink drips 2 are struck against the wires, an electric signal is produced. This value is integrated and amplified by an integration circuit ITG, the output from the integrator is applied to a motor control circuit MTC to rotate the motor MT and a variable resistance VR is set to cause the output OT is made to be the maximum value. |
