Duplex Unit; Overview - Canon i-SENSYS MF4300dn Service Manual

Chapter 7

7.4 Duplex Unit

7.4.1 Overview

0020-2707
i-SENSYS MF4300dn / i-SENSYS MF4350d / i-SENSYS MF4380dn / i-SENSYS MF4310/4318 / i-SENSYS MF4320d / i-SENSYS MF4330d / i-SENSYS
MF4340d / i-SENSYS D450d / i-SENSYS MF4370dn
The duplexing pick up operation of this machine is performed by the drive of the main motor (M1) under CPU control of the DCNT PCB.
After the machine completes the 1st print and the paper's trailing edge passes over the delivery sensor (PS803), the duplexing drive solenoid (SL2) is turned on and
the drive of the main motor (M1) is transmitted to the delivery roller and the duplexing feed roller.
By turning the delivery roller in reverse direction, the paper is lead to the duplexing feed unit, and sent to the feed roller via duplexing feed roller.
There is no sensor on the duplexing paper's feeding path to detect the arrival/passage of paper.
There is no stationary function to stop and retain paper in duplexing unit.
M1
PS803
F-7-4
7-6