| 摘要 |
PROBLEM TO BE SOLVED: To provide a power circuit applicable to an image forming device capable of reducing a power transformer while maintaining the difference of a voltage application timing. SOLUTION: The voltage is applied from an IHVU 500 to a charger 42. In company with the voltage application of IHVU 500, the grid voltage Vg is generated on a line 515. The developing power source 600 is allowed to generate a sub-roller voltage Vs from the grid voltage Vg by using resister 601. Moreover, the developing roller voltage Vd is generated from the sub-roller voltage Vs by using a varistor 602. In order to make application of the developing power source 600, or the developing roller voltage Vd at appropriate timing, a transistor 606 is turned on responding to the time after a prescribed time from the start of the IHVU 500. Therefore, one power source is adequate to be equipped corresponding to two voltage applying parts, then the constitution can be simplified. |
