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US 4,538,904 AGranted
Multiple magnification mode copying apparatus
AssigneeXerox Corporation
InventorJohn N. Lane
Life of this patent
Estimating the term…
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AssigneeXerox Corporation
InventorJohn N. Lane
Estimating the term…
A multiple magnification mode copying apparatus includes a full and half rate scanning mirror system and a lens for forming an image of an object to be copied. The lens may be shifted along its optical axis to any one of a plurality of predetermined positions to change the magnification mode of the apparatus, and at the same time shifted transversely of the optical axis by the appropriate amount for each of said predetermined positions in order to maintain one edge of the image adjacent one edge of the copy regardless of the magnification mode. The half rate mirror system is also shifted so as to achieve the required conjugate lengths. The means for shifting the lens comprises a first cable and pulley system, and the means for shifting the half rate mirror system comprises a second cable and pulley system, the two cable and pulley systems being driven by a single driving means. The single driving means drives the cable of the first cable and pulley system, and the cable of the first cable and pulley system drives an interconnecting shaft. The cable of the second cable and pulley system is driven, for shifting the half rate mirror system, by the interconnecting shaft.
A document reproduction apparatus capable of operating in a plurality of magnification modes including a document support surface, a full rate scanning system and a half rate scanning system arranged to travel along a path parallel to, and below, said support surface and a lens for projecting an image of the scanned document onto a photosensitive surface, the apparatus further including an arrangement for moving the half rate mirror system and lens coincident with a change in magnification, the arrangement comprising;
Dependencies are inferred from the claim text.