Image forming apparatus

Abstract

An image forming apparatus includes an image bearing member; charging means for electrically charging the image bearing member; developing means for developing an electrostatic latent image formed on the image bearing member with a developer into a developed image; transferring means for transferring the developed image from the image bearing member onto an image receiving member; a first developer charging member for electrically charging a residual developer on the image bearing member, the first developer charging member being disposed downstream of the transferring means and upstream of the charging means, with respect to a movement direction of the image bearing member, and the first developer charging member being supplied with a voltage of a polarity opposite a regular polarity of the developer; a second developer charging for electrically charging the residual developer on the image bearing member to the regular polarity of the developer, the second developer charging member being disposed downstream of the first developer charging means and upstream of the charging means, with respect to the movement direction of the image bearing member, and the second developer charging member being supplied with a voltage; means for detecting an environmental condition of the image forming apparatus; and controlling means for controlling, in accordance with an output of the detecting means, at least one of the voltages applied to the first and second developer charging members.

Dependencies are inferred from the claim text.