Xerox Phaser 4620 User Manual

5/2011
8-7
Phaser 4600/4620 Printer Service Manual
Xerographics
Principles of Operation
Revision - Xerox Internal Use Only
Xerographics
Drum Cartridge
The Drum Cartridge is located under the Toner Cartridge and is reached through the Top Door.
The Drum Cartridge is a customer-replaceable item. The Drum Cartridge consists of OPC
drum unit and the development unit. The OPC drum unit has an OPC drum, a scorotron which
charges the OPC, a light-guide and cleaning blade. The development unit has a magnetic
roller, two mixing augers, developer, a Dr-blade and an ADC sensor.
Figure 1 Drum Cartridge
The OPC drum is charged with a negative voltage and exposed by the Laser Unit. The laser
light creates a latent image on the surface of the OPC drum. The negatively charged toners are
attracted to the latent image. Toner on the OPC drum moves to the media by the positive bias
charge applied to the media by the Transfer Roller. To better understand how the Drum Car-
tridge operates, the name and function for each Drum Cartridge component is listed below.
Figure 2 Drum Cartridge components
Table 1 Drum Cartridge Components
Component Function
Drum The Drum is an aluminum cylinder coated with a layer of photo-
conductive material that retains electrical charges on its surface
until exposed to light, when electrical conduction occurs.
Magnetic Roller A thin layer of developer and toner adheres to the surface of this
roller, which transports the toner to the Drum surface.
Charging and Metering (Dr)
Blade
The CM Blade controls the thickness of developer and toner
over the Magnet Roller, and applies negative charges to the
toner.
Cleaning Blade The Cleaning Blade removes toner remaining on the Drum.

Xerox Phaser 4620 Specifications

General

Operating temperature (T-T)	50 - 90 °F
Operating relative humidity (H-H)	20 - 80 %
Color	No
I/O ports	10/100/1000 BaseT Ethernet, USB 2.0
Depth (min)	541 mm
Height (min)	420 mm
Minimum width	476 mm
Minimum weight	34.6 kg
Package length	698.49 mm
Print technology	Laser printing
Mac compatibility	Yes
Security features	Audit log, HTTPS, Image overwrite security, IP filtering, IPSec, Network authentication, SNMPv3, 802.1x
Storage drive type	Optional
Print memory (standard)	256 MB
Power consumption (active)	900 W
Minimum storage drive space	160 GB
Power consumption (standby)	93 W
Power consumption (PowerSave)	10 W
Storage media	HDD
Maximum internal memory	768 MB
Sound power level (standby)	39 dB
PCL fonts	93
Certification	Class 1 Laser Product, CE Marked, EMC Directive 89/336/EEC, EN 55022 Class B, EN 55024, FCC Part 15, Class B, Low Voltage Directive 73/23/EEC, RoHS Directive 2002/95/EC
Country of origin	China
Maximum duty cycle	275000 pages per month
Number of PostScript fonts	136
Number of print cartridges	1
Total input capacity	550 sheets
Total output capacity	500 sheets
Maximum input capacity	2000 sheets
Multi-Purpose tray input capacity	100 sheets
Maximum resolution	1200 x 1200 DPI
Time to first page (black, normal)	7.8 s
Print speed (black, normal quality, A4/US Letter)	65 ppm
Display	LCD
Package weight	40200 g
Maximum print size	216 x 356 mm
Paper tray media types	Bond paper, Card stock, Labels, Pre-Printed, Recycled paper, Transparencies
ISO A-series sizes (A0...A9)	A4
Standard interfaces	USB 2.0
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Export Control Classification Number (ECCN)	EAR99

Weight and Dimensions

Width	627.37 mm
Height	685.79 mm
Dimensions (WxDxH)	476 x 420 x 541 mm