User Guide

C. Pre-Exposure (step 1)

Figure 2-105

Before executing primary charging, light from

the pre-exposure lamp is directed to the surface

of the drum (pre-exposure), thereby removing

residual charges from the surface and, ultimately,

preventing uneven copy density.

D. Primary Charging (step 2)

Figure 2-106

The GP 215/GP200 uses a charging roller

made of conducting rubber so as to charge the

photosensitive drum directly for primary charging.

The use of direct charging requires less applica-

tion voltage than conventional corona charging

and produces virtually no ozone.

An AC bias is applied to stabilize the charges

applied to the photosensitive drum.

The primary charging roller is a special roller

and is not the same as the transfer roller.

2–3

2. COPYING PROCESS

Primary charging roller