IMAGE READER

PURPOSE:To miniaturize and lighten a device, at the same time, to improve assembling character, and to reduce cost by composing an image reading means by using a constructional base made of a conductive metallic board to mount various elements necessary for an image reading scanning. CONSTITUTION:An image reading means 7 of an image reader is composed of an illuminating lamp 10, a convergent optical body 11, etc., a sensor part 12, etc., to be mounted on a constructional base 9 and a base 9 made of the conductive metallic board to mount optical, electrical and mechanical elements necessary for the image reading scanning. Since the base 9 itself functions as the constructional material of a carriage as well as, the circuit board of respective electric parts, the means 7 is lightened, and the motor of a driving part, etc., can be miniaturized, lightened, etc. Thus, the whole device can be miniaturized and lightened, as well as, an expensive multilayer laminating board does not need to be used, and thereby, the manufacturing cost of the means 7 can be reduced. Further, since parts for earthing such as an earth cable, a screw, a washer are not used at all, the cause of an electric noise can be reduced, and simultaneously, the assembly character can be improved.