Patent ID: 6771394
Filing Date: 2004-08-03
Classification: H04N

Abstract:
An image scanning apparatus comprising: a support arm, a stand block supporting the support arm, a scan type illumination device mounted on the support arm for applying a slit-shaped light beam onto a surface of a manuscript, and a manuscript image scanning device for scanning a manuscript image illuminated by the slit-shaped light beam and reflected from the surface of the manuscript,wherein the scan type illumination device is constructed so as to apply the slit-shaped light beam in a direction vertical to the longitudinal direction of the slit shape of the slit-shaped light beam, the image scanning device includes a manuscript image input block for inputting a reflected light containing a manuscript image reflected from the surface of the manuscript and a light detecting device supplied with the reflected light containing the manuscript image which is output from the manuscript image input block, the manuscript image input block is constructed in such a manner that the reflected light containing the manuscript image reflected from the manuscript surface is selectively applied to a predetermined portion of the light receiving surface in the light detecting device in synchronization with the scan operation of the scan type illumination device, and the scan type illumination device includes a light source, a concave mirror, and a cylindrical lens which are constructed so as to be rotatable around a predetermined shaft.