An image scanning unit for correcting a variation in magnification caused by an inclination of optical visual-line between a manuscript and a photoelectric conversion element when a full-speed scan reciprocating bed and a half-speed scan reciprocating bed are scanned in the sub-scan direction. The image...http://www.google.de/patents/US6384942?utm_source=gb-gplus-sharePatent US6384942 - Image scanning unit
