Image forming apparatus configured to perform a primary transfer of a toner image from a plurality of image bearing members to an intermediate transfer belt by following a current in circumferential direction with respect to the intermediate transfer belt

摘要

An image forming apparatus sequentially transfers toner images formed on a plurality of photosensitive drums onto an intermediate transfer member or a transfer material to form an image. The image forming apparatus includes an intermediate transfer belt provided with electrical conductivity, and a power supply for applying a voltage to a current supply member contacting the outer circumferential surface of the intermediate transfer belt to pass a current from the current supply member to the plurality of photosensitive drums via the intermediate transfer belt, thus primarily transferring the toner images from the plurality of photosensitive drums onto the intermediate transfer belt.

主权项

1. An image forming apparatus comprising:
a plurality of image bearing members configured to bear toner images; a rotatable endless intermediate transfer belt configured to secondarily transfer onto a transfer material the toner images primarily transferred from the plurality of image bearing members; a current supply member contacting an outer surface of an outer side of the intermediate transfer belt, configured to supply a current to the intermediate transfer belt; a power supply configured to apply a voltage to the current supply member, wherein, by being applied with a voltage from the power supply, the current supply member performs a primary transfer of a toner image from the plurality of image bearing members to the intermediate transfer belt by following a current in circumferential direction with respect to the intermediate transfer belt.