Patent ID: 9310722
Filing Date: 2016-04-12
CPC Classification: G03G

Claim Text:
1. An image forming apparatus comprising: a transfer member configured to abut against an image carrier for carrying a toner image to form a transfer nip; and a power supply configured to output a bias voltage for transferring the toner image on the image carrier onto a recording medium nipped in the transfer nip, wherein the bias voltage includes a first voltage for transferring the toner image from the image carrier onto the recording medium in a transfer direction and a second voltage having an opposite polarity of the first voltage, the first voltage and the second voltage being alternately output when the toner image on the image carrier is transferred onto the recording medium, and a time-averaged value of the bias voltage is set to a polarity in the transfer direction and is set in a transfer direction side with respect to a median between a maximum and a minimum of the bias voltage.