Xerox Phaser 6120 Service Manual

Print Engine Theory of Operation
Phaser® 6120 Color Laser Printer Service Manual
7-4
Operation Sequence
[5] Developing The toner, negatively charged in the Hopper, is attracted onto the
electrostatic latent image formed on the surface of the Photo
Conductor. It is thereby changed to a visible, developed image.
A Imaging Unit negative bias voltage is applied to the Developing
Roller, thereby preventing toner from sticking to the background
image portion.
[6] 1st Image Transfer A Imaging Unit positive voltage is applied to the backside of the
Transfer Belt, thereby allowing the visible, developed image on the
surface of the Photo Conductor to be transferred onto the Transfer
Belt.
[7] 2nd Image Transfer A Imaging Unit positive voltage is applied to the backside of the
paper, thereby allowing the visible, developed image on the surface
of the Transfer Belt to be transferred onto the paper.
[8] Paper Separation The paper, which has undergone the 2nd image transfer process, is
neutralized.
[9] Transfer Belt Cleaning A charge is applied to the Transfer Belt. By potential difference,
residual toner on the surface of the Transfer Belt is collected for
cleaning.
[10] Photo Conductor (Drum)
Cleaning
The residual toner left on the surface of the Photo Conductor is
scraped off.
Key Name Function/System
Fusing Motor (M7)
Print Request
Main Motor (M1)
Polygon Motor
Charge output
1st transfer output
2nd transfer output
2nd Transfer Roller retracted
Pressure/Retraction Solenoid
/Cleaning Blade (SL3)
Developing Motor (M3)
C-TOD
Rack Motor (M2)
Tray1 Paper Pick-up Solenoid (SL1)
Registration Roller Solenoid (SL2)
Registration Sensor (PC1)
Exit Sensor (PC7)
4139to2049e0

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