| 摘要 |
PURPOSE:To obtain an electrostatic recorder which improves the quality of an image and prevents a sheet from scumming by applying a first voltage responsive to print information to a segment electrode, applying a second voltage having a wider pulse width than that of the first voltage to a control voltage, and transferring toner on a toner carrier onto a recording material to be fed between the carrier and a signal electrode. CONSTITUTION:A recording head 3 has many segment electrodes 3b-1, 3b-2 interleaved at both sides of an insulating plate 3a, the segment electrodes are connected to a high voltage power source 3d through switches 3c-1, 3c-2, a control voltage to be output from a control voltage output circuit 11 to control electrodes 13a-13c is output at a predetermined timing with respect to the output timing of a high voltage to be output from the high voltage power source 3d to the segment electrodes 3b-1, 3b-2, thereby desirably printing. Thus, the relationship between a high voltage printing period Ps and a control voltage printing period Pc is Pc>=Ps, and the control voltage is applied to the control electrodes 13a-13c slightly before the start timing of the high voltage applying period Ps. Thus, the sheet P is clearly printed in a circular shape. |
