Ricoh A220 Service Manual page 118

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DEVELOPMENT
5) Magnification Compensation (V
V
is determined by the selected reproduction ratio as follows:
BMG
–100
Dev. Bias
Voltage
–60
(negative)
–40
–30
–20
50%
4.4.3 Bias Control Out of Copy Cycle
To hold the toner on the sleeve rollers while the development sleeve rollers
are rotating without image development, a constant –300 V bias is applied.
81%
62%
61%
80%
)
BMG
123%
116%
115%
122%
2-52
15 July 1996
142%
141%
160%
A176D563.wmf
161%

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