FrameMaker Ver5.5E(PC) Di152/Di183 MECHANICAL/ELECTRICAL
01.09.05
M-22
12-2.
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.
12-3.
Developing Bias
• Vb (-DC, AC) is applied to the Sleeve/Magnet Roller.
• Vb (-DC) is applied to prevent toner from sticking to the background of the image.
• Vb (AC) is applied to enhance good separation of toner from carrier.
• The amount of toner sticking to the surface of the PC Drum is varied according to the dif-
ference in potential between the voltage (Vi) on the surface of the PC Drum and
Vb (-DC).
✽
Large difference = A greater amount of toner sticks.
✽
Small difference = A smaller amount of toner sticks.
Elevtrical Component
Control Signal
ON
OFF
Wiring Diagram
Vb (-DC)
PWB-A PJ8A-9
L
H
6-B
Vb (AC)
PWB-A PJ8A-10
L
H
1171M027AA
4021M062AA
PC Drum
Sleeve/Magnet Roller
1st Toner Conveying Roller
Sleeve/Magnet Roller
4021M018AB
Sleeve/Magnet Roller
PC Drum
Developing Bias Terminal
Содержание D1531iD
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