Samsung SCX-5530FN/XAZ Service Manual page 34

System Overview
3.2.7.5 CHARGING PORTION
Type : Conductive Roller Contact-Charge
Rotary Velocity : 179.7 mm/sec
- Length : 230 mm
- OD : 12.0 0.05 mm
- Shaft OD : 6 + 0 / -0.05 mm
- Driver : Gear Driver
- Roller life : 8,000 sheets or more
Roller Voltage : -1.25 ~ -1.70 KV
Service Manual
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Samsung Electronics