Paper Pick-Up/Feed System; Operation - Canon DU-82 Service Manual

CHAPTER 2
II. PAPER PICK-UP/FEED SYSTEM
A. Operation
1. Outline
The print paper is guided to the reversing unit in the printer through the duplexing unit with
the duplex deflector.
The paper fed to the reversing unit is transported to the duplexing unit by changing the feed-
ing direction with the reversing roller. The side registration of the paper is adjusted by the side
registration guide in the duplexing unit (see page 2-8). The paper is then transported to the
printer with the duplex feed roller.
The reversing roller is rotated by the duplexing unit motor (M8). Duplex feed rollers 1 and 2
are turned by the duplexing unit motor (M8) through the duplex feed clutch.
The duplexing unit motor (M8) is a stepping motor that is run clockwise, counterclockwise,
at normal or high speed by the microcomputer (CPU) on the duplex driver PCB.
The side registration guide is driven by the side registration motor (M7) according to the print
paper size.
2 - 4