Patent ID: 8045875
Filing Date: 2011-10-25
Classification: G03G

Abstract:
1. An image forming apparatus, comprising: an image carrier configured to carry a toner image; and a transfer device, including: at least one transfer member configured to apply a transfer bias; a transfer electric field bearer configured to receive the transfer bias applied by the at least one transfer member to generate a transfer electric field; a toner image receiver configured to receive the toner image transferred from the image carrier by the transfer electric field generated; a voltage applier configured to apply a predetermined voltage to the transfer electric field bearer; a potential measurement device configured to measure a surface potential of the transfer electric field bearer when a predetermined time period elapses after the voltage applier applies the predetermined voltage to the transfer electric field bearer; and a controller configured to determine the transfer bias to be applied by the at least one transfer member to the transfer electric field bearer based on the measured surface potential of the transfer electric field bearer.