| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for preventing spark discharge in the electric power control of a charging process. SOLUTION: The invention provides an image forming apparatus, which forms an image on a recording medium from a developer image. The image forming apparatus includes: a photosensitive body which bears a developer image by being charged; a charging unit which includes a charging wire and a grid, and charges the photosensitive body; a charging power circuit which applies a wire potential to the charging wire; a wire potential measuring circuit which measures a wire potential; and a charging control circuit which controls supply of electric charges to the photosensitive body from the charging unit by operating the wire potential. The charging control circuit includes a control range restricting unit which restricts a control range of the wire potential within a prescribed electric potential. COPYRIGHT: (C)2010,JPO&INPIT
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