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8.1.3. EXPOSING
When the drum which is charged with the fixed electric charge is irradiated by the laser beam, the plus charge and minus charge are generated at the Charge Generation Layer. Passing through the Charge Transfer Layer which conducts the plus charge, the minus-charged drum's surface is neutralized to be skipped. Then the minus charge goes to the ground from the electric conductive cylinder. Consequently the charge of the part which is not exposed remains as it is, and the electric potential of the scanned part changes. At that time an invisible image is created on the drum. Exposing Part
8.1.4. LASER SCANNING UNIT LOCATIONS
8.1.5. DEVELOPING AND TRANSCRIPTION
The developing is the stage that the OPC drum with an invisible image is changed to visible by the toner. The developer consists of mixing paddle, toner supply roller, developing roller, developing blade and OPC drum. The bias voltage is added to the developing roller (DC -180V) and toner supply roller (DC -350V). Firstly the toner is mixed up in the mixing paddle and minuscharged by triboelectricity, then led to the toner supply roller. Secondly the potential difference causes to send the toner to the developing roller from the toner supply roller. The supplied toner
