Xerox VersaLink B7025 Service Manual

April 2017
8-50
Xerox® VersaLink® B7025/B7030/B7035 Multifunction Printer
Launch Issue
Product Technical Overview
Drum Cartridge (Charge)
NOTE: Some images in this section show the drum cartridge opened to reveal the charge and
development components. This is for information purposes only. You will never need to disas
-
semble the drum cartridge.
The bias charge roll (BCR) is in constant contact with and rotates with the photoreceptor drum.
It applies a uniform negative DC voltage charge superimposed with AC voltage on the surface
of the photoreceptor, preparing it to be exposed by the laser print head (LPH).
The surface of the drum is a light-sensitive, dispersion undercoat (DUC) membrane. After the
photoreceptor's surface receives a uniform charge from the bias charge roller, the LPH
exposes (discharges) the image areas. Refer to Figure 11.
Figure 11 Photoreceptor drum charging
Laser Print Head (LPH)
Exposure of the image on the drum is achieved using a laser print head (LPH).
The ESS PWB controls the LPH directly via the FFC cable. LPH operation begins when the
ESS PWB sends the start instruction and image data to the LPH.
The lasers are switched on and off based on the image density data from the ESS PWB and
the laser light is directed onto the surface of the photoreceptor. The regions of the photorecep
-
tor that are exposed by the laser become discharged, forming the electrostatic latent image
that attracts the toner. Refer to Figure 12.
Figure 12 Laser print head (LPH)
LPH
Photoreceptor drum
LPH

Xerox VersaLink B7025 Specifications

General

Print Speed	Up to 25 ppm
Print Resolution	Up to 1200 x 1200 dpi
Copy Resolution	Up to 600 x 600 dpi
Scan Resolution	Up to 600 x 600 dpi
Control Panel	5-inch color touchscreen
Duplex Printing	Standard
Processor	1.05 GHz
Memory	2 GB
Paper Output	250 sheets
Fax Speed	33.6 kbps
Fax Transmission Speed	3 seconds per page
Display	5-inch color touchscreen
Connectivity	Ethernet 10/100/1000 Base-T, High-speed USB 3.0
Functions	Print, Copy, Scan
Media Sizes Supported	A4, A5, A6, B5
Printer Type	Laser
Copy Speed	Up to 25 ppm
Mobile Printing	Apple AirPrint, Google Cloud Print, Xerox Print Service Plug-in for Android