Patent ID: 8285176

Claim:
An apparatus comprising: a main body including an opposed portion and defining a space for receiving one or more process cartridges configured to form an image on a recording medium; a transfer unit disposed in the main body, the transfer unit including a pair of rollers spaced apart, a frame supporting the rollers, and an endless belt extending around the rollers, the belt including an extending portion facing the opposed portion of the main body; a locking mechanism configured to fix the transfer unit in the main body; and a spacer, different from the one or more process cartridges, disposed between the transfer unit and the opposed portion of the main body, the spacer including a first contact portion, a second contact portion that is spaced apart from the first contact portion, and a connection portion that connects the first and second contact portions, the first contact portion being configured to contact the opposed portion, the second contact portion being configured to contact the extending portion of the endless belt.