Constant current-type high-voltage power supply apparatus and method of controlling power output from the same

摘要

A constant current-type high-voltage power supply apparatus which is used in an image forming apparatus includes a leakage current detection unit that detects a leakage current leaked from at least one output terminal of the constant current-type high-voltage power supply apparatus and outputs the detected leakage current, a direct current voltage output unit that outputs different direct current (DC) voltages according to whether the leakage current detected by the leakage current detection unit is input, and a power control unit that controls power supply to the constant current-type high-voltage power supply apparatus according to the output DC voltage.

主权项

1. An image forming apparatus comprising:
a print engine that forms an image on a print medium by performing a print process including charging, exposing, developing, transferring, and fixing operations; and a constant current-type power supply unit that applies a constant current-type power to at least one unit of the print engine which performs the printing process; and a control unit that controls operation of the print engine, wherein the constant current-type power supply unit comprising:
A power output unit to detect a leakage current, under normal operating conditions of the image forming apparatus, at an output terminal of the constant-current-type power supply unit and to adjust the power level output from the terminal based on the detected leakage current.