OKIDATA OL400e Series, Руководство по обслуживанию

Страница: 97 / 397

Page: 75
Service Manual for OL400e/OL410e/OL410e-PS
Chapter 2 Principles of Operation
2.4.06 Developing
The electrostatic latent image formed on the image drum surface is developed into a
visible image. Developing takes place when contact is made between the image drum
and the developing roller.
As the toner supply roller rotates, toner is absorbed into the sponge type roller material.
A charged particle will be attracted to a particle having a MORE POSITIVE charge than its own.
The developing roller surface is charged to -300 vdc and the toner supply roller is charged
to -450 vdc. Since the development roller is charged more positive than the toner supply roller,
the toner on the toner supply roller is attracted to the developing roller. The toner on the
developing roller contacts the doctor blade, forming a thin coat of toner on the developing
roller surface.