Patent ID: 7721859
Filing Date: 2010-05-25
Classification: G03G

Abstract:
1. A rotary force controlling apparatus of an image forming apparatus, comprising: a clutch device including a solenoid unit spaced apart from the clutch device and that is selectively turned on and off; the positioning unit including a connecting member integrally assembling both sides of the clutch device and the solenoid unit together; wherein the second positioning units form a pair and are symmetrical around the center of the housing, and the first positioning unit is positioned at approximately 90° degrees from each of the second positioning units around the center of the housing, wherein the first positioning unit and the plurality of second positioning units are located on the same even periphery of the housing and the first positioning unit having a different shape from the plurality of second positioning units, and wherein the plurality of second positioning units have substantially the same height different than the height of the first positioning unit, such that the first positioning unit interferes with the interfering unit only when the solenoid is turned on.