Service manual

2.1 Engine Operation
This section describes the functions and operating principles of the EPL-N2000 engine.
2.1.1 Printing Process
The whole printing process for this printer is divided into the seven stages described in Table 2-1.
Table 2-1. Printing Process for the EPL-N2000
Steps Process Description
1
Charging Charges the surface of the PC drum with static electricity.
A rayon brush is used.
2
Exposure The laser beam emitted from the laser unit produces an
electrostatic latent image on the surface of the PC drum.
3
Development Toner is fed through the sleeve roller to the surface of the PC
drum to produce a visible toner image.
4
Transfer The transfer roller transfers the toner image from the surface
of the PC drum onto the paper, using an electrical charge
applied from the transfer roller.
5
Separating The electrode discharges the paper to separate it from the
drum.
6
Fusing Toner image is fixed on the paper with heat and pressure.
7
Cleaning The cleaning blade clears toner off the PC drum and transfer
roller.
Figure 2-1 shows the locations and name of the main engine components and the paper paths.
Sleeve Roller
Charging Brush
PC Drum
Cleaning Blade
Print Head unit
Fusing Unit
Lower Fusing Roller
Upper Fusing Roller
Transfer Roller
Registration Rollers
Imaging
Cartridge
Needle Pole
Figure 2-1. Mechanism Parts and Paper Paths for
Main Printing Process
EPL-N2000 Service Manual Operating Principles
Rev.A 2-1