Laser Exposure System; Overview - Canon imageRUNNER ADVANCE C5255 Series Service Manual

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Technology > Laser Exposure System > Overview > Overview

Laser Exposure System

Overview

■ Overview
To realize the high-speed printing, this machine adopts the 2 Laser Scanner Units and the
Laser Driver of each color executes laser scanning with 4-beam.
imageRUNNER ADVANCE C5255 / C5250 employs 4 beam and C5240 / 5235 employs 2
beam.
Imaging Lens
Skew Correction Motor Bk (M34)
Skew Correction Motor Y (M31)
Imaging Lens
Skew Correction
Motor M (M32)
Bk
Y
Scanner
Mirror
M
Scanner
Mirror
Laser Scanner Unit 1
Laser A
Laser B
Laser C
Laser Driver PCB M (UN12)
Laser D
This machine emits the laser to the image area on the drum negatively-charged.
Non-image area
2 Technology > Laser Exposure System > Overview > Overview
Skew Correction Motor C (M33)
Laser Scanner Unit 2
C
BD Sensor (C, Bk)
Laser Driver PCB C (UN15)
Laser Driver PCB Bk (UN14)
BD Sensor (Y, M)
Laser Driver PCB Y (UN13)
Image area
Non-image area
Laser ON
Enlarged view
F-2-45
Laser Scanner Unit 1
Imaging Lens
Reflection Mirror
Reflection Mirror
Scanner
Mirror
Laser
Driver
(M)
Reflection Y
Mirror
Imaging
Lens
Reflection
Mirror
Laser
Scanner
Driver
Mirror
(M)
F-2-44
Laser Scanner Unit 2
Laser Laser Laser
Driver Driver Driver
(Y) (Bk) (C)
M C Bk
Laser
Laser Laser
Scanner
Driver
Driver Driver
Mirror
(Y) (Bk)
2-31
Reflection
Mirror
Imaging
Lens
Reflection
Mirror
(C)
F-2-46
2-31