| 摘要 |
An image forming apparatus comprises a main charger for charging the surface of a photosensitive drum, an exposure unit for illuminating an original and guiding light from the original onto the drum, thereby forming thereon an electrostatic latent image corresponding to an image of the original, a detector for detecting the size of the original, and an erase array for erasing an undesired electric charge on the photosensitive drum in accordance with the original size detected by the detector.
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