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US 4,232,964 AGranted
Document illumination system
AssigneeThe Mead Corporation
InventorsEugene Nodov, Burton W. Scott, George W. Denlinger, Richard Sutera
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AssigneeThe Mead Corporation
InventorsEugene Nodov, Burton W. Scott, George W. Denlinger, Richard Sutera
Estimating the term…
A document illumination system adapted for use in a jet drop copier or duplicator. A pair of focussing reflectors collect illumination from two parallel line source illuminators and direct the collected illumination toward a pair of scanning mirrors. The scanning mirrors, together with a pair of side mirrors, direct narrow beams of illumination toward a common illuminated strip on the face of a document positioned on a flat document support member. The scanning mirrors are scanned in synchronism to move the illuminated strip back and forth along the face of the document, and the reflectors are concomitantly moved in synchronism to maintain an image of the illumination sources in one dimensional focus at the surface of the document. All motion of the scanning mirrors and the reflectors is produced by a single drive motor, which drives a set of interspersed timing belts to produce uniform rotary motion of the input shafts for four conjugate cam arrangements. The conjugate cam arrangements are appropriately configured for producing the requisite motion of the reflectors and the scanning mirrors.
A document illumination system comprising a flat document support member including a transparent window, a pair of parallel line source illuminators positioned below said window at opposite ends thereof, a pair of focussing reflectors positioned for collecting illumination from said illuminators and configured for focussing said illumination into a pair of narrow beams each having a linear extent substantially equal to the full width of a document to be copied, a pair of scanning mirrors positioned in the paths of said beams and arranged for directing said beams toward a common strip extending laterally across said document, a pair of first cam mechanisms for cooperatively rotating said scanning mirrors to cause scanning of said beams longitudinally along the length of said document, a pair of second cam mechanisms for repositioning said focussing reflectors and adjusting the focussing action thereof in synchronism with the scanning of said beams, a common drive motor, and drive means connecting said drive motor to all of said cam mechanisms for common driving thereof.
Document illumination apparatus comprising a document support member for supporting a document in a flat scanning plane, a pair of parallel illumination line sources positioned in a plane parallel to said flat scanning plane and at opposite ends of the area of document support, anamorphic optical means for receiving illumination from said line sources and directing substantially one-dimensional images thereof toward superimposed positions on said scanning plane, scanning means for scanning said superimposed images across said scanning plane and refocussing means for adjusting the foci of said images during said scanning.
Dependencies are inferred from the claim text.