Patent ID: 7484722

Claim:
An image-forming device comprising: a main casing having a discharge tray formed on a top surface thereof, the discharge tray supporting a recording medium discharged after an image-forming operation; a cover member that covers a side surface of the main casing on a downstream side of the discharge tray with respect to a discharge direction in which the recording medium is discharged, and that is capable of opening and closing thereon; an extension tray that is rotatably attached to an upper part of the cover member, that is capable of extending downstream from the discharge tray in the discharge direction, and that supports a portion of the discharged recording medium; and an engaging unit engaging the cover member with the main casing when the cover member is closed, the engaging unit comprising: an engagement part provided on the main casing side; and an engaging part provided on the cover member side and being capable of engaging with the engagement part; and an operating part disposed on the cover member side that disengages the engaging part from the engagement part when operated, the extension tray having a rotational shaft provided downstream of the operating part in the discharge direction and being rotatably supported on the cover member about the rotational shaft to be capable of rotating between a first position in which a distal end of the extension tray is positioned upstream of the rotational shaft in the discharge direction and a second position in which the distal end is positioned downstream of the rotational shaft in the discharge direction, the operating part being capable of being operated when the extension tray is in the first position.