COPY PROCESS OVERVIEW
B064 Series/B140 Series/G126 6-10 SM
6.3 COPY PROCESS OVERVIEW
1. EXPOSURE (B140 Series and B064 Series Only)
A xenon lamp exposes the original. Light reflected from the original passes to
the CCD, where it is converted into an analog data signal. This data is
converted to a digital signal, processed, and stored in the memory. At the time
of printing, the data is retrieved and sent to the laser diode. For multi-copy runs,
the original is scanned once and stored on the hard disk.
2. DRUM CHARGE
In the dark, the charge corona unit gives a negative charge to the OPC drum.
The grid plate ensures that corona charge is applied uniformly. The charge
remains on the surface of the drum because the OPC layer has a high
electrical resistance in the dark.
3. LASER EXPOSURE
The processed image data from the scanned original is retrieved from the hard
disk (or, as with the G126, print job information) and transferred to the drum by
four laser beams, which form an electrostatic latent image on the drum surface.
B140D905.WMF
B140D906A.WMF
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Pre-Transfer Lamp
(B140 Series Only)
Rev. 05/2005
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