Patent ID: 11953841
Assignee: SHARP KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. The image forming apparatus according to claim 1, the image forming apparatus being a color image forming apparatus, further comprising:
an intermediate transfer belt,
a plurality of the charging rollers, a plurality of the photoconductor drums, and a plurality of the developers that are provided on an outer circumference of the intermediate transfer belt;
intermediate transfer members that perform intermediate transfer of respective toner images formed on surfaces of the plurality of photoconductor drums onto the intermediate transfer belt; and
intermediate transfer power supplies that apply bias voltages to the intermediate transfer members, wherein
the image detector detects the toner images on the intermediate transfer belt, and
in the contact and separation determination mode, the controller causes the charge power supply and the development power supply to output respective predetermined bias voltages to the plurality of charging rollers and the plurality of developers, and causes the intermediate transfer power supplies to output predetermined transfer bias voltages.