Patent ID: 9122196
Filing Date: 2015-09-01
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a first developing device configured to develop an electrostatic latent image formed on a first image bearing member; a second developing device configured to develop an electrostatic latent image formed on a second image bearing member; a common driving source unit configured to commonly drive the first developing device and the second developing device; and a control unit configured to control a predetermined initialization operation with respect to each exchanged developing device by driving the first developing device and the second developing device in a case where at least one of the first developing device and the second developing device is exchanged for a new developing device; wherein, in a case where either one of the first developing device or the second developing device is exchanged for a new developing device and the other developing device is not exchanged for a new developing device, the control unit executes the initialization operation with respect to said one of the developing devices and doesn't execute the initialization operation with respect to the other developing device, and wherein the control unit executes a replacement operation, that is different from the initialization operation, for replacing a developer disposed in a developing device with respect to the other developing device while executing the initialization operation of said one of the developing devices, and doesn't execute the replacement operation to said one of the developing devices.