a first body houses a photoconductor is provided with a second body openably and closably attached to the first body . additionally , a unit is provided to be swingable with respect to the second body such that an exposure surface of the unit is disposed at an exposure position opposing the photoconductor when the second body is closed . the exposure surface of the unit is disposed at a retreated position facing toward the rotary shaft of the second body when the first body is opened . since the exposure surface of the unit faces toward the rotary shaft of the second body when the second body is opened , the exposure surface is not exposed to outside of the second body .