Xerox Phaser 6120 Service Manual

Print Engine Theory of Operation
Phaser® 6120 Color Laser Printer Service Manual
7-18
Toner Flow
1. Toner stored in the Hopper is agitated by the Agitating Blade and conveyed into the Toner
Supply Portion by the Conveyance Blade fitted to the leading edge of the Agitating Blade.
2. The toner conveyed into the Toner Supply Portion is conveyed by the Supply Roller onto
the Developing Roller.
3. At this time, Regulator Blade/1st and /2nd regulate the height of toner on the surface of the
Developing Roller.
4. Toner then sticks to the electrostatic latent image formed on the surface of the Photo
Conductor. Any part of toner left on the surface of the Developing Roller is returned to the
Toner Supply Portion.
.
Developing Bias
■ The developing bias voltage (Vb) is applied to the Developing Roller so that an adequate
amount of toner is attracted onto the surface of the Photo Conductor.
■ To allow toner to transfer to the Photo Conductor easily, Imaging Unit + AC developing
bias voltage (Vb) is applied to the Developing Roller during development. This AC
component of the developing bias voltage is applied only during development. At any time
other than the development, only the Imaging Unit (-) component of the developing bias
voltage is applied.
■ The developing bias voltage (Vb) is supplied by the High Voltage Unit (HV).
.
4139to2061e0
Hopper
Supply Roller
Developing Roller
Regulator Blade/2nd
Regulator Blade/1st
Agitating Blade
4139to2062e0
Developing Bias Contact Point
Regulator Blade Contact Points
Seal Bias Contact Point

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