Extended range variable magnification reproduction machine

摘要

A document reproduction machine having an extended range of magnifications employs a scanning optical system which is controlled as to scanning speed and distance of travel by the selected magnification. In an extended reduction copying range the speed of the scanning optical system is automatically increased in proportion to the selected magnification reduction, but the increase in scanning distance is limited to the platen size. A clutch mechanism is employed to terminate the normally increasing scanning distance in the extended reduction range.