Xerox Phaser 6120 Service Manual

Print Engine Theory of Operation
Phaser® 6120 Color Laser Printer Service Manual
7-33
2nd Transfer Roller Cleaning
■ Imaging Unit positive and negative transfer bias voltages are alternately applied to the 2nd
Transfer Roller. This allows toner residue on the surface of the 2nd Transfer Roller to be
transferred back to the Transfer Belt, thus cleaning the 2nd Transfer Roller.
■ The toner transferred back to the Transfer Belt is collected by the Cleaning Blade.
.
Operation Timing
The 2nd Transfer Roller cleaning sequence is carried out under any of the following
conditions:
■ Power Switch is turned ON.
■ Cover is opened and closed.
■ A media error occurs during a print cycle.
■ A paper empty condition occurs during a print cycle.
■ A paper size error occurs during a print cycle.
Transfer Belt
2nd Transfer Roller
4139to2082e0
Pressure/Retraction Solenoid /
2nd Image Transfer (SL4)
2nd transfer cleaning bias
Pressed
Retracted
After Transfer Belt cleaning
4139to2083e0

Xerox Phaser 6120 Specifications

General

Color	Yes
Print technology	Laser
Time to first page (black, normal)	13 s
Time to first page (color, normal)	22 s
Print speed (black, normal quality, A4/US Letter)	20 ppm
Print speed (color, normal quality, A4/US Letter)	5 ppm
Internal memory	128 MB
Processor model	300 MHz, 32 bit RISC
Maximum print size	210 x 297 mm
Maximum ISO A-series paper size	A4
I/O ports	USB
Power requirements	200 – 240 VAC / 100 – 127 VAC 50/60 Hz
Networking features	Ethernet/Fast-Ethernet
Non-operating relative humidity (non-condensing)	10 - 85 %
Total input capacity	200 sheets
Maximum input capacity	500 sheets
Printer fonts	PostScript
Maximum duty cycle	35000 pages per month
Number of PostScript fonts	139
Power consumption (printing)	380 W
Storage temperature (T-T)	-20 - 40 °C
Operating temperature (T-T)	10 - 32 °C
Operating relative humidity (H-H)	10 - 80 %

Weight and Dimensions

Dimensions (WxDxH)	442 x 395 x 341 mm