Laser Exposure System Overview - Canon imageRUNNER ADVANCE C5045 Series Service Manual

2
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 C5051 / C5045 employs 4 beam and C5035 / 5030 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
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-2-49 F-2-49
Laser Scanner Unit 1
Imaging Lens
Reflection Mirror
Reflection Mirror
Laser
Driver
Y
Reflection
Mirror
Imaging
Lens
Reflection
Mirror
Laser
Driver
(M)
F-2-48 F-2-48
Laser Scanner Unit 2
Scanner
Mirror
Laser Laser Laser
Driver Driver Driver
(M) (Y) (Bk) (C)
M C
Laser Laser
Scanner Scanner
Driver Driver
Mirror Mirror
(Y) (Bk)
2-28
Bk Reflection
Mirror
Imaging
Lens
Reflection
Mirror
Laser
Driver
(C)
F-2-50 F-2-50
2-28