A drive control device for use in an image forming apparatus comprises: a cover sensing unit which detects the opening of a cover of the image forming apparatus; a relay unit which controls supplement of a voltage for driving a laser scanning unit; and a relay operation control unit which controls the operation of the relay unit in response to the detected result of the cover sensing unit. Examples of such pathologies include pterygium, kerataconus, and macular degeneration. The second flat plate has a lower surface in which a second recess is formed, and an upper surface on which a semiconductor laser element is mounted. This combination adapter allows the user 14 to plug into a line-in input port 26, enabling the use of a microphone 20 and providing additional means to connect another line-in connection through the 3.