Xerox Phaser 6120 Service Manual

Print Engine Theory of Operation
Phaser® 6120 Color Laser Printer Service Manual
7-54
Image Stabilization Control (Density) and Output Process
To ensure that a stabilized output image is produced at all times, the following image
stabilization controls are provided
.
Leak Detection Control
For the clearance between the Photo Conductor and Developing Roller, an optimum
developing bias voltage is established that does not result in a light image or uneven density.
Purpose Control Detection
To ensure stabilized
transfer
output
ATVC
■ See the Transfer section on
page 7-22.
Temperature/Humidity Sensor (HS1)
To ensure stabilized image
density; to ensure good
tone reproduction
AIDC control (Density)
■ Leak detection control
■ AIDC intensity control
■ Reflectance measurement control
■ Control of the maximum amount
of toner sticking
■ Laser intensity adjustment control
■ Correction control
AIDC Sensor (AIDC)
Temperature/Humidity Sensor (HS1)
4139to2098e0
IN
OUT
1st Transfer Roller
2nd Transfer Roller
ATVC
Grid BiasDeveloping Bias
Developing
Charging
PC
AIDC Sensor
Temperature/
humidity Sensor
AIDC Control

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