Scanner with retractable roller feed

Details Scanner with retractable roller feed Scanner with retractable roller feed

G - Physics

01

D

314/42, 88/96.2

G01D 15/14 (2006.01) G01D 15/16 (2006.01) H04N 1/00 (2006.01) H04N 1/08 (2006.01) H04N 1/12 (2006.01) H04N 1/193 (2006.01)

Patent

CA 2030326

7616 Title: SCANNER WITH RETRACTABLE ROLLER FEED ABSTRACT OF THE DISCLOSURE A scanner is operative with an imaging system for inducing a mechanical movement of a subject during an optical scanning of the subject to provide an image of the subject. The subject which is in the shape of a card is advanced along a travel path past an optical viewing site by means of a drum, the scanner including a first roller and a second roller which urge the subject against the drum. Initially, the first roller is located between the viewing site and the entry port for receipt of the subject in a first nip between the first roller and the drum. The second roller is positioned fixed on the opposite side of the viewing site. The first roller is supported by an arm which swings about a rotational axis of the drum to vary the spacing between the two rollers. Upon rotation of the drum in a forward direction for induction of the subject, a brake located between the drum and the arm drags the arm and the first roller towards the second roller to facilitate a transference of a leading edge of the subject from the first nip to a second nip defined by the second roller and the drum. Preparatory to optical scanning of the subject which is accomplished during reverse rotation of the drum, the arm swings the first roller away from the second roller to present the viewing site to the optical scanning beam.

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