Canon PC980 Service Manual - Page 125

CHAPTER 5 PICK-UP/FEEDING SYSTEM I. PICKUP/FEEDING SYSTEM A. Outline The machine moves paper using a center reference method, in which paper is moved in the middle of the pickup/feeding path, and is equipped with a cassette, multifeeder, and single-feeder as the source of paper. From the cassette, multifeeder, or single-feeder, copy paper is picked up and is controlled by the registration roller so that its leading edge will match the leading edge of the image on the photosensitive drum; it is then moved through the transfer, separation, feeding, and fixing assemblies to reach the copy tray. The machine is equipped with four sensors used to monitor the movement of copy paper. Notation Name PS3 Delivery sensor Remarks PS4 Vertical path roller paper sensor PS5 Single-feeder paper sensor Single-feeder model only Q751 Pre-registration roller paper sensor Table 5-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-1