Discharge - Xerox 4400DT - Phaser B/W Laser Printer Service Manual

Discharge

After the toner image has transferred to the surface of the paper, the Detack Saw (a
thin strip of metal that resembles a saw blade) applies a negative charge to the back
side of the paper to neutralize the positive voltage that was applied to it by the
Transfer Roller. Once the positive voltage is neutralized, the paper strips easily off of
the drum surface.
Block Diagram of the Discharge Process — Side View
Fusing
The paper moves to the Fuser Assembly where it passes between the Heat Roller and
the Pressure Roller. The Heat Roller melts the toner image and bonds it permanently
to the paper. The paper then is transported to the output tray.
Phaser 4400 Laser Printer Service Manual 8-9