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239
UF-5500 / 4500
13.2. Printing Operation Principle
13.2.1. Process Chart and Process BIAS
13.2.2. CHARGING
Charging is the stage that keeps the surface of the sensitive drum a fixed electric potential. The sensitive drum is the Organic Photo
Conductor (OPC), which is a electric conductive cylinder whose surface is covered with the Charge Generation Transfer Layer
(CGTL).
When the charging bias (DC +4.35kv) is added and the plus charge is supplied to the OPC surface while charging, the whole sur-
face potential of the drum is +475V.
Charging Part
Pressure Roller
Heat Roller
Transfer Roller
Developing Roller
OPC Drum
108.96mm/sec
Paper Path
Toner Supply Roller
Mirror
LSU
Developing Blade
LASER Path
Exit Roller
Developing Bias DC 170~240V & AC330V P.P.
(depends on the ambience and the lifetime)
AC 120V
Charging Bias
+200
µ
A
Constant current
(4.1~4.6kV)
Transcription Bias -4 to -25
µ
A (-500 ~ -4200V)constant
current (depends on the printing ratio)
Halogen
lamp
Grid plate
Charge
Wire
+475V
Cover
Glass
Charge Generation Transfer
Layer (CGTL)
+
Surface Pot475V
OPC
Drum
Electric Conductive
Cylinder (aluminum)
+
+
+
+
+
+
+
Grid Bias
DC +475V
Charging Bias
+200
µ
A
Constant current
4.1~4.6kV
Содержание UF-4500
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Страница 248: ...248 UF 5500 4500 13 5 Test Chart 13 5 1 ITU T No 1 Test Chart ...
Страница 249: ...249 UF 5500 4500 13 5 2 ITU T No 2 Test Chart ...
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Страница 287: ...287 UF 5500 4500 130 131 132 133 134 135 136 137 138 139 140 141 PCB2 A UF 5500 only CN1 ...
Страница 289: ...289 UF 5500 4500 PCB8 PCB4 160 161 163 162 164 167 168 171 177 178 172 173 174 173 176 169 170 162 164 A A 165 ...
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Страница 309: ...309 UF 5500 4500 A1 A3 A4 A6 A7 A8 A9 A10 P1 P2 P3 P4 P5 P6 P7 P8 P7 Drum Cartridge Toner Cartridge P9 A11 ...
Страница 311: ...311 UF 5500 4500 501 502 503 504 506 507 505 508 509 511 510 514 513 512 P51 P53 P54 A51 P52 ...
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Страница 365: ...365 UF 5500 4500 Published in Japan ...