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Old May 1st 05, 01:48 PM
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N cook wrote: "Dirty optics leads to less light getting to the latent
areas on the OPC, to neutralise the charge, and so toner
stays on the OPC leading to grey instead of white on the
paper. "

This is a digital copier by the way. Scanner scans it first, stores it
in memory, then, image is drawn onto the imaging drum with a laser