IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING CLEANING UNIT OF IMAGE FORMING APPARATUS

摘要

To provide a cleaning unit that reduces cost and labor for maintenance.SOLUTION: An image forming apparatus comprises: an image carrier configured to carry toner images; a cleaning unit 43 configured to recover a toner on the image carrier; and a control device 101 configured to control the cleaning unit 43. The cleaning unit 43 includes a first cleaner brush 44 and a second cleaner brush 45 configured to remove the toner from the surface of the image carrier. The control device 101 applies bias voltages having polarities opposite to each other to the first and second cleaner brushes 44, 45, and determines whether the end of life is reached for each of the first and second cleaner brushes 44, 45.SELECTED DRAWING: Figure 3