To load a magazine of recording materials in a fitting surface part of a device main body in a proper state about internal equipment and to set the magazine in a secure light-shield state by a light-shield labyrinth structure between the magazine and the fitting surface part.

The fitting surface part 122 can be installed in a specific state by fitting the fitting surface part 122 to positioning fitting parts 144 and 146 provided integrally with a frame member for internal equipment irrelevantly to the fitting state of an entirety cover 126 constituted as a housing fitted to cover fixation parts 140 and 142 provided to a frame member of an image recorder 10 through a light-shielding labyrinth structure composed of a connection member 130 which is in simple structure and can deform or an insertion groove and a projection streak for the labyrinth, which are in simple structure.