FrameMaker Ver5.5E(PC) Di251/Di351 MECHANICAL/ELECTRICAL
.05.03.01
M-23
13-1.
Sleeve/Magnet Roller
• The Sleeve/Magnet Roller, which consists of an outer sleeve roller and an inner magnet
roller, conveys developer to the point of development.
• The magnetic force of the magnet roller at the point of development is the strongest so
that the developer brush stands straight up to deliver the greatest amount of toner to the
point of development.
13-2.
Developing Bias
• A developing bias voltage (Vb) is applied to the Sleeve/Magnet Roller to prevent toner
from sticking to the background of the image.
• The amount of toner attracted onto the surface of the PC Drum depends on how much
lower the PC Drum surface potential (Vi) is than Vb (i.e., potential difference).
✽
When the potential difference is large, a greater amount of toner is attracted.
✽
When the potential difference is small, a smaller amount of toner is attracted.
Electrical Component
Control Signal
ON
OFF
Wiring Diagram
Vb
PJ15A-2A
L
H
6-E
1167M076AB
PC Drum
Sleeve/Magnet
Roller
1st Toner Conveying
Roller
1171M027AA
Sleeve/
Magnet Roller
4011M019AA
PC Drum
Sleeve/Magnet Roller
Developing Bias Terminal
Summary of Contents for Di251
Page 1: ...Di251 Di351 SERVICE MANUAL GENERAL 4011 7990 11 ...
Page 2: ...INDEX GENERAL GENERAL MECHANICAL ELECTRICAL ...
Page 3: ...GENERAL ...
Page 18: ...MECHANICAL ELECTRICAL ...
Page 24: ...M 4 3 DRIVE SYSTEM 1 Scanner Motor M10 2 Main Motor M2 3 I C Motor M1 1 3 2 4011M002AA ...
Page 71: ...Di251 Di351 SERVICE MANUAL FIELD SERVICE 4011 7991 11 ...
Page 83: ...Di251 Di351 Allgemein Mechanik Elektrik Rev 1 1 0 03 01 I 1 INSTALLATION 3 ...
Page 88: ...Di251 DI351 Rev 1 1 0 03 01 I 6 ...
Page 93: ...I 5 Di251 Di351 Rev 11 0 0 03 01 10 Grounding plate screws 3 1 2 3 4 5 6 7 8 9 10 ...
Page 99: ...I 11 Di251 Di351 Rev 11 0 0 03 01 6 Fit the Exit Tray 7 Close the Finisher Cover ...
Page 178: ...I 90 Di251 Di351 Rev 1 1 0 0 03 01 ...
Page 179: ...DIS REASSEMBLY ADJUSTMENT 10230 ...
Page 241: ...SWITCHES ON PWBs TECH REP SETTINGS 17196 ...
Page 296: ...TROUBLESHOOTING 14413 ...