Patent ID: 7864382

Claim:
An image-reading apparatus, comprising: a housing; a document table placed on the housing for receiving document; a movable optical unit used for reading the image information on the document placed on the document table, the movable optical unit being placed reciprocally movably in the housing in directions parallel to the document table; a locking member for locking the movable optical unit, the locking member being placed movably on the external surface of the housing and being formed with a screw hole; and a holding mechanism for holding the locking member variable in posture between a first posture of locking the movable optical unit and a second posture of unlocking the movable optical unit, the holding mechanism including a screw inserted through the screw hole in the locking member and screwed into the housing, the posture of the locking member being fixed when the screw is tightened and being modified when the screw is loosened.