COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)• Duplexing UnitCHAPTER 1 GENERAL DESCRIPTION1-10Figure 1-404wqreq Horizontal registration guidew Pick-up guide platee Duplexing feeding roller 1r Duplexing releasing leverDownload free service manual at http://printer1.blogspot.com