Reflective document feeder

Claim 1

In a copying apparatus with a document copying platen, and an overlayable light reflective platen cover for holding documents against said platen for illuminated copying thereon, and document drive means in said platen cover for driving a document on said platen, the improvement wherein: said document drive means comprises at least one endless surfaced rotatable document drive member having a light reflective endless surface partially extendable through a minor fixed aperture in said platen cover towards said platen, said endless surface of said drive member having a substantially constant width transverse its direction of rotation, said fixed aperture in said platen cover being wider than said endless surface of said drive member transversely of said direction of rotation of said endless surface to allow limited transverse movement of said drive member relative to said platen cover, and wherein a light reflective shield, having an aperture of substantially the same width of said endless surface of said drive member, is movably mounted relative to said platen cover with said drive member extending through said light shield aperture and with said light shield closely fitted to opposite sides of said drive member, said light shield being freely movable transversely together with said drive member relative to said platen cover, said light shield constantly overlying said fixed aperture in said platen cover irrespective of said transverse movement to constantly present a substantially uninterrupted light reflective surface over said platen together with said drive member.