| 摘要 |
An image forming apparatus includes a photosensitive member; a charging device for charging the photosensitive member; an exposure device for exposing the photosensitive member charged by the charging device in accordance with image information; a developing device for developing, with toner, an electrostatic image formed on the photosensitive member by the exposure device into a toner image; a transfer charger for transferring the toner image formed on the photosensitive member by the developing device onto an image receiving member in a transfer portion; a light discharger, provided between the transfer charger and the charging device with respect to a rotational direction of the photosensitive member, for electrically discharging by light the photosensitive member; a current detector for detecting a current flowing through the transfer charger; a corrector for correcting a charging bias voltage applied to the charging device on the basis of an output of the current detector provided when a portion of the photosensitive member charged by the charging device substantially without being subjected to a light discharging operation of the light discharger passes through the transfer portion and on the basis of an output of the current detector provided when a portion of the photosensitive member subjected to a light discharging operation of the light discharger and charged by the charging device passes through the transfer portion.
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