Registration mechanism for a multimagnification reproduction app

Details Registration mechanism for a multimagnification reproduction app Registration mechanism for a multimagnification reproduction app

1983-03-21

1985-07-23

Grimley, A. T.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 8, 355 55, 355 70, 355 71, 430 59, G03G 1500, G03B 2772, G03B 2752

Patent

active

045305927

ABSTRACT:
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 to maintain correct corner registration of the document at the image plane.

REFERENCES:
patent: 3476478 (1969-11-01), Rees, Jr.
patent: 3777135 (1973-12-01), Rees
patent: 4093374 (1978-06-01), Zucker et al.
patent: 4105327 (1978-08-01), Gibson et al.
patent: 4116554 (1978-09-01), Libby et al.
patent: 4244649 (1981-01-01), Rees et al.
patent: 4265990 (1981-05-01), Stolka et al.
patent: 4272188 (1981-06-01), Lehman et al.
patent: 4298275 (1981-11-01), Critchlow et al.
patent: 4316668 (1982-02-01), Miller
patent: 4386843 (1983-06-01), Seedhouse
patent: 4466734 (1984-08-01), Rees

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