Duplex Unit Transport Motor Control; Duplex Unit Loop Correction Control; 2-Sided Printing Method - Xerox Phaser 6120 Service Manual

Duplex Unit Transport Motor Control

Rotation of the Duplex Unit Transport Motor is controlled by the signals output from the
Duplex Control Board.

Duplex Unit Loop Correction Control

A loop correction mechanism is provided to prevent skew from occurring in the second
page.
The Duplex Registration Solenoid (SL6 DU) is energized after the lapse of a given period
of time after the Duplex Paper Loop Sensor (PC10 DU) has been activated. This drives the
Duplex Registration Roller. When the Duplex Registration Roller is driven, the paper is
conveyed into the machine.

2-Sided Printing Method

The following two types of 2-sided printing methods are available.
2-sided printing
method
Note:
Automatic 2-sided printing is not effective when the FD length is less than
276 mm.
Phaser® 6120 Color Laser Printer Service Manual
2-sided printing with a single sheet of paper resident in the
system
2-sided printing with two sheets of paper resident in the
system (When the FD length is no less than 276 mm, no more
than 297 mm).
9-23
Theory of Operation