COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)IV. DUPLEXING UNITA. OutlinePaper is moved to the copier’s reversing assembly through the duplexing unit by theduplexing flapper.It is then shifted by the reversing roller and moved inside the duplexing unit. When ithas been adjusted for horizontal registration by the horizontal registration guide insidethe duplexing unit (p. 5-26), it is moved by the duplexing feeding roller to the duplexingunit stacking assembly.The reversing roller rotates in response to the drive from the duplexing motor (M8).The duplexing feeding roller 1 and the duplexing feeding roller 2 are rotated by the drivefrom the duplexing motor (M8) controlled by the duplexing feeding clutch.The duplexing motor (M8) is a stepping motor, and is controlled to rotate clockwiseand counterclockwise by the microprocessor (CPU) on the duplexing driver PCB; it is alsocontrolled to rotate at normal or high speed.The horizontal registration guide is shifted by the drive from the horizontal registrationmotor (M7).CHAPTER 5 PICK-UP/FEEDING SYSTEM5-22Download free service manual at http://printer1.blogspot.com