| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus of high transfer efficiency, capable of maintaining high image quality, and also, capable of rapidly and satisfactorily coping with many kinds of recording materials. SOLUTION: In the image forming device provided with a transfer means equipped with a contact transfer member which is abutted on an image carrier, and for transferring a toner image formed on the image carrier onto the recording material at a transfer nip part formed between the image carrier and the contact transfer member while holding and carrying the recording material, the image forming apparatus is provided with a control means for changing the transfer current value [It] of a constant current supply means for supplying a transfer current to the contact transfer member, and also, the control means for obtaining a current value at a bent point where a voltage value is drastically changed at making the current flow in the contact transfer member while gradually increasing the current, and also, for setting the transfer current value [It] based on the obtained current value in accordance with a transfer environment. |
