Xerox Corporation

Edwin Zucker

David K Shogren

Edward C Bock

David N Redden

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.

Extended range variable magnification reproduction machine

A document reproduction machine having a multiple range of magnifications employs a scanning optical system which is controlled as to scanning speed and distance of travel by the selected magnification. In the higher reduction copying ranges 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. Multiple cams are employed for each range of magnification, and means are provided to change the scanning drive means between the multiple cams.

Multiple range variable magnification reproduction machine

A document reproduction machine having a multiple range of magnifications employs a scanning optical system which is controlled as to scanning speed and distance of travel by the selected magnification using a three-dimensional cam mechanism. In the higher reduction copying ranges the speed of the scanning optical system is automatically increased in proportion to the selected magnification reduction, and the increase in scanning distance is tailored to match expected document size to achieve a minimum amount of scanning distance.

Multiple range variable magnification reproduction machine using

This invention relates to a method and apparatus for creating high shear stresses in a particulate suspension prior to use of such suspension for imaging or inking. The method and apparatus in one environment function to stress a thin layer of an electrophoretic suspension of particles in a liquid carrier. The prestressed suspension is better suited than unstressed suspensions for preparing both monochromatic and polychromatic copies from originals by particle migration through the suspension when it is exposed to electromagnetic radiation in image configuration while in an electric field across the suspension between two electrodes. The method and apparatus is also used for printing inks in order to form a prestressed, uniform, thin layer of the ink for application to the press.

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Rochester, NY, United States of America

Edwin Zucker