Original scanning device provided with moving original platen

Abstract

PURPOSE: To prevent out-of-focus even when the center of gravity is out of a device main body because of the movement of an original platen and to miniaturize a device by disposing an inclination preventing means for preventing the inclination of the moving original platen on the end part side of the device main body. CONSTITUTION: The inclination preventing means 12 and 13 for preventing the inclination of the original platen 2 when the center of the gravity of the original platen 2 is out of the device main body because of the movement of the original platen 2 are disposed on the end part side of the device main body. In such a case, the means 12 and 13 are L-shaped angle members which guide the side end of the original platen 2 in a moving direction and which prevent the inclination, and a tapered surface is formed on the surface of the angle member opposed to the original platen 2 in a direction in which the inclination is prevented. On the back end part side of the original platen 2, the tapered surface is formed in the direction in which the inclination is prevented by engaging with the angle member. Therefore, the original platen 2 is smoothly moved and the floating of the original platen 2 is prevented, so that the out-of-focus is prevented, and further the device is miniaturized. COPYRIGHT: (C)1992,JPO&Japio

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