II. LENS DRIVE SYSTEMA. Movement of the Lens1. Outline of the MovementThe copier uses center reference, in which copy paper is picked up and fed in rela-tion to the center of the feeding paths and originals are placed in relation to the rear ofthe machine (when using the copyboard cover). As such, the lens is moved in Y (verti-cal) direction even in Direct mode to suit the width of copy paper.n Using the Copyboard CoverFigure 3-201 (top view)The RDF installed to the machine uses center reference; when the size of the origi-nal and the size of the copy paper are identical in Direct mode, the lens is not moved inY (vertical) direction (Figure 3-202).If the size of the original and the size of the paper are different, on the other hand, orin Reduce/Enlarge mode, the lens is moved in Y (vertical) direction so that the image onthe copy paper will be correct.n Using the RDFFigure 3-202 (top view)Original(small)Original(large) Copy paper(small)LensCoy paper (large)Y directionOriginal(small)Original(large)Original(small)Lens position (Direct)for copy paper (small)Lens position (Direct)for copy paper (large)Copy paper(large)Y directionCHAPTER 3 EXPOSURE SYSTEM3-2 COPYRIGHT © 1997 CANON INC. CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
