Patent ID: 9229400
Filing Date: 2016-01-05
CPC Classification: G03G

Claim Text:
1. An image forming apparatus comprising: an image bearing member configured to bear a toner image; a rotatable endless intermediate transfer member; and a power supply configured to apply a voltage for transferring the toner image which is on the image bearing member onto a transfer material via the intermediate transfer member, wherein the intermediate transfer member is provided with electrical conductivity, and wherein the power supply applies a transfer voltage that is in an opposite polarity to a regular toner charging polarity so as to perform a primary transfer that transfers a toner image from the image bearing member to the intermediate transfer member by flowing a current via the intermediate transfer member in circumferential direction of the intermediate transfer member, and the power supply applies the transfer voltage that is in the opposite polarity so as to perform a secondary transfer that transfers the toner image from the intermediate transfer member to the transfer material.