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Toner Cartridge / Photo Conductor Main Unit Theory of Operation
2-22
II Composition/Operation
5. Toner Cartridge / Photo Conductor
5.1 Composition
5.2 Operation
5.2.1 Photo Conductor drive mechanism
• Motors are used for the drive mechanism independently of the developing system to sup-
press incorrect color registration and uneven pitch.
• To stop the drive for the color Toner Cartridges in the monochrome mode, different
motors are used to drive the color Photo Conductors and black Photo Conductor.
• The Color PC Drum Motor (M2) drives the Photo Conductor/Y, M, and C, while the Inter-
mediate Transport Motor (M3) drives the Photo Conductor/K.
• In addition to the Photo Conductor/K, the Intermediate Transport Motor (M3) also drives
the transfer system, paper feed system, and synchronizing drive system.
• Gears having a large diameter are used to enhance rotating accuracy of the Photo Con-
ductors.
• The use of gears having a large diameter provides a large number of gear teeth, which
suppresses uneven pitch and eccentricity.
• Drive is transmitted to each of the Photo Conductors when the coupling on the drive end
is engaged with that on the driven end.
Key Name Function/system
[1]
Photo Conductor/Y, M, C, K • Drum surface on which an image of each color of toner is
formed for subsequent transfer of the image to the Transfer Belt.
• OPC drum (φ30 mm)
4138to2004c0
[1]
4138to2505c1
Charge Transport
Layer
Direction of
rotation
Aluminum base
Charge
Generating
Layer
4138to2027c0
Intermediate Transport Motor (M3)
Color PC Drum Motor (M2)
Large-diameter
gear
Coupling
Y
M
C
K
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