Patent ID: 8983338
Filing Date: 2015-03-17
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an apparatus body having a frame; a detachable fixing unit having fixing paired-rollers, and installed in the apparatus body; a heating/controlling unit for heating and controlling at least one of a first roller and a second roller of the fixing paired-rollers of the detachable fixing unit; a driving source unit for driving the at least one of the first roller and the second roller of the fixing paired-rollers heated by the heating/controlling unit; a temperature detecting unit for detecting a temperature of the detachable fixing unit; and an adjustment mechanism for preventing the detachable fixing unit from being taken out of the apparatus body when the temperature detecting unit determines that the temperature of the detachable fixing unit exceeds a predetermined value, and for allowing the detachable fixing unit to be taken out of the apparatus body when the temperature detecting unit determines that the temperature of the detachable fixing unit does not exceed the predetermined value; wherein the adjustment mechanism comprises: wherein the cam mechanism rotates to a first position to make the first roller of the fixing paired-rollers of the detachable fixing unit resiliently press the second roller when the temperature detecting unit determines that the temperature of the detachable fixing unit exceeds the predetermined value, and rotates to a second position to make the first roller of the fixing paired-rollers of the detachable fixing unit separate from the second roller when the temperature detecting unit determines that the temperature of the detachable fixing unit does not exceed the predetermined value; and wherein the stopper member rotates to engage with the stopper-member receiver formed in the frame of the apparatus body when the cam mechanism rotates to the first position, thereby preventing the detachable fixing unit from being taken out of the apparatus body, and rotates to disengage from the stopper-member receiver when the cam mechanism rotates to the second position, thereby allowing the detachable fixing unit to be taken out of the apparatus body.