Development Process - Epson AcuLaser C2600 Service Manual

EPSON AcuLaser C2600/2600

2.1.3.3 Development Process

In the development process, toner is electrically applied to a pattern of electrical
charges (an electrostatic image) on the drum to form a visible image on it.
PRINCIPLE OF DEVELOPMENT
Rotary Development System
This printer employs the Rotary Development System, which rotates a wheel
composed of four toner and developer units (toner cartridges) to set the units into
position one-by-one to develop the electrostatic image with one color at a time.
Single Component Noncontact Development System
The toner used for the printer is one component type and nonmagnetic. To produce
negative electrostatic charge on the toner, the toner is rubbed against the
development roller which is negatively charged by the HVPS. Then the toner
jumps the gap between the roller and the photoconductor drum by being attracted
to the electrostatic image on the drum because the image is charged positively in
comparison with the other part on the drum. This system, which transfers toner to
the drum without mechanical contact, is called noncontact developing system.
Operating Principle
Developer Unit (Toner cartridge)
Toner Storing
Space
Supply Roller
Position
Image Area
Other than Other than
the Image the Image
Area Area
Figure 2-7. Principle of Development
Print Process
Photoconductor Drum
Developer
Roller
Developing
Space
Developing
Control Blade
Voltage Supply
Image Area
Developing
Bias (DC)
Other than
the Image
Area
Revision B
02000801
Time
DC + AC
Developing
Bias
DC
02000901
91