IMAGE FORMING APPARATUS

摘要

An image forming apparatus includes an exposure device configured to expose image bearing members charged by charging devices to form latent images on the image bearing members, and a control unit configured to, in ether one or both of an image forming unit A and an image forming unit B, adjust an amount of exposure by which the image bearing member is exposed and a charging voltage based on information about the image bearing members of the image forming units A and B. The control unit is configured to make the charging voltage and the amount of exposure in the image forming unit A different from the charging voltage and the amount of exposure in the image forming unit B.

主权项

1. An image forming apparatus configured to be capable of executing a color mode for forming a color image and a monochrome mode for forming a monochrome image, the image forming apparatus comprising:
a monochrome image forming unit configured to be used both in the monochrome mode and the color mode; and a plurality of color image forming units configured to be used only in the color mode, wherein each of the monochrome image forming unit and color image forming units includes: an image bearing member on which a latent image is able to be formed; a charging device configured to charge the image bearing member; a developing device configured to develop the latent image into a developer image; and a transfer portion configured to transfer the developer image from the image bearing member to a transfer member, wherein in the color image forming units, transfer voltages are applied to the respective transfer portions from a common transfer power supply and charging voltages are applied to the respective charging devices from different charging power supplies.