Patent ID: 7409176

Claim:
An image forming apparatus comprising: a main body; a fixing frame, in which a plurality of photosensitive bodies are installed, the fixing frame being inserted into and/or removed from a fixed position in the main body; main and auxiliary guide protruding portions formed on the fixing frame to guide the fixing frame as the fixing frame is inserted into and/or removed from the main body; a guide rail, formed in the main body, to receive the guide protruding portions; and main and auxiliary position determining portions, formed at an end of the guide rail and along a first side of the guide rail, respectively, to correspond to positions of the guide protruding portions, the main guide protruding portion being fixed at the main position determining portion and the auxiliary guide protruding portion being biased against a second side of the guide rail at the auxiliary position determining portion, wherein an outer diameter of the auxiliary guide protruding portion is greater than an outer diameter of the main guide protruding portion.