TRANSFER ASSEMBLY AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of preventing first transferring performance from being unstable due to reduction of effective transfer current (It-Ia), in which first transfer current is applied to an intermediate transfer belt 241 by an indirect applying method. SOLUTION: The image forming apparatus includes a first transfer bias controller (not shown) in a first transfer bias power supply 248 performing a differential constant current control by which the differential current between output current It applied from the first transfer bias power supply 248 and return current Ia fed back to the first transfer bias power supply 248 from the intermediate transfer belt 241 via an earth roller 246 is kept constant.