Ricoh A220 Service Manual page 111

15 July 1996 OPTICS
3.12 HALF TONE MODE
A176D553.wmf
This machine has a half tone mode. In this mode, which can be select in the
operation panel, the charge corona grid voltage is decreased by 200 V but
the charge corona grid voltage might blank out low density areas of the
original. To correct this, the exposure lamp voltage is decreased by 3 V. As a
result, the image density is lowered for picture or half tone original.
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