Specifications

Duplex Unit Options
6-79
6.7.1.6.2 Transport and Duplex Paper Take-Up Mechanism
(1) Transport and Duplex Paper Take-Up Operation
The paper fed into the Duplex Unit is transported through, and eventually fed out of, the Duplex Unit
before being fed to the paper take-up mechanism of the machine.
The transport and Duplex paper take-up operations are performed by two pairs of Duplex Unit Transport
Rollers/Rolls and the Manual Feed Paper Take-Up Roll of the machine. The use of the latter contributes to
smaller floor space requirements. The drive for these operations comes from the Duplex Unit Transport
Motor and Manual Feed Paper Take-Up Clutch.
Duplex unit transport
roller 1 and 2
Duplex main board
PWB-A
Duplex unit transport
sensor PI1
Duplex unit transport
motor M2
Transport motor M2
Manual feed paper
take-up clutch CL3
Manual feed paper
take-up sensor PC8
Manual feed paper
take-up roll
(2) Duplex Unit Transport Motor Control
The Duplex Unit Transport Motor is a two-phase stepping motor. Its speed is controlled by
applying pulse signals output from pins 1 to 4 of PJ2A to the motor.