Oki OL1200 Service Manual page 37

Page: 18
Service Guide OL1200
Chapter 2 Operation Description
(5) Developing
Toner is attracted to the electrostatic latent image on the image drum surface to convert it into a visible
toner image. Developing takes place at the contact between the image drum and the developing roller.
1. As the toner supply roller rotates while rubbing on the developing roller, a friction charge is generated
between the developing roller and the toner, allowing the toner to be attracted to the developing roller.
(The developing roller surface is charged positive and the toner, negative.)
2. The toner attracted to the developing roller is scraped off by the doctor blade, forming a thin coat of
toner on the developing roller surface.
3. Toner is attracted to the exposed part (low-potential part) of the image drum at the contact between the
image drum and the developing roller, making the electrostatic latent image visible.
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