Registration mechanism for a multi-magnification...

Details Registration mechanism for a multi-magnification... Registration mechanism for a multi-magnification...

G - Physics

03

B

95/32.4

G03B 27/32 (2006.01) G03G 15/041 (2006.01)

Patent

CA 1225858

-1- ABSTRACT OF THE DISCLOSURE A flash exposure optical imaging system is provided which includes a light housing having a movable top and bottom surface. The top surface contains a document platen, the bottom surface a fixed, wide-angle projection lens. These surfaces are vertically translated past a fixed, central housing wall to vary the system conjugate in response to changes in magnification. In a preferred embodiment, a pair of football shaped cams are rotated in response to position signals from a controller initiated by a magnification change. A pair of T-bars and linkage mechanisms are associated with these cams and their motion provides simultaneous vertical motions to the top and bottom housing surfaces, respectively. During the vertical excursion of the floor assembly, an additional horizontal motion is imparted to the lens so as tomaintain correct corner registration of the document at the image plane.

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