Oki OKIOFFICE 120, Maintenance Manual

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2.8.1 Drum Charge
•
The Drum is charged with static electricity before LED exposure. The Rotating Charge Brush is
used for the charging method.
•
The rotating brush charging generate little ozone in the printer. Because the charge is directly given
to the Drum, the Drum can be charged by low voltage. At the same time, the Drum can be charged
stably and evenly.
2.8.2 Drum Exposure
An invisible static image is made by the light from the LED print head.
The LED print head, located inside the printer cover, closes down over the drum and projects light
onto the drum surface. When the document is to be printed, individual elements in the LED print head
turn on and expose the drum where ever a dark area should appear in the document.
2.8.3 Development
Toner is applied to the invisible static image on the Drum and a toner image is created on the surface.
Part Name Function
1 Toner Agitator Contains toner.
2 Toner supply Roller Transports the toner to the developing roller.
3 Developing Roller Carries the toner to the Drum surface for development.
4 Drum Exposed to LED right to create an invisible image and
rotates to carry the developed image to the paper
surface.