3-4
3.4 Printing Process
3.4.1 Charging
The steel shaft of the charge roller applies a high-voltage DC bias to the OPC, and evenly charges
the surface of the OPC-6 00V with a negative charge.
3.4.2 Exposure
When the photoconductor is subjected to irradiation by the laser beam, the charge disappears.
Other parts which are not irradiated, still keep their charge to form an electric potential difference
image. This is usually called an electrostatic image.
3.4.3 Development
Toner is fed to the surface of the developing roller from the feeder roller. After the OPC is exposed,
voltage is supplied to the developing roller when the OPC contact is exposed. The supplied
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