US Patent 7916360 Image scanning apparatus

An image scanning apparatus includes an endless belt; a pair of rotating bodies being adapted to wind the belt therearound with tension and rotating for rotating the belt; an image scanning unit which moves in association with the rotation of the belt in a state of being fixed to the belt for scanning an image from a document; a pair of frame members connected to each other; a supporting shaft integrated with one of the frame members for rotatably supporting one of the rotating bodies; and a restraining member provided on the other frame member for restraining inclination of the supporting shaft caused by a shaft load applied to the supporting shaft by the belt being wounded around the pair of rotating members with tension.