Chapter 7
7-1
7.1 Overview/Configuration
7.1.1 Overview
0019-5006
The laser exposure system forms latent images on the photosensitive drum according to the video signals with the control by the DC controller.
The laser exposure system consists of the laser scanner unit.
The 2 laser driver PCBs, the 2 scanner motors, and the 2 polygon mirrors are installed on the laser scanner unit.
There are two (two colors of) laser diodes for one laser driver PCB. The laser beams of two colors emitted from the laser diode are reflected by one polygon mirror.
In this machine, the process speed varies according to the print mode. The rotational speed of the scanner motor and the laser light intensity are switched according
to the process speed.
F-7-1
/SCNM1ACC, /SCNM1DEC
/SCNM2ACC, /SCNM2DEC
LDCTRL, VIDEO
LDCTRL, VIDEO
/BD3I
/BD1I
LD1PDOUT, LD2PDOUT
LD3PDOUT, LD4PDOUT
LDPWRH
LDPWRH
Photosensitive drum
Polygon mirror (Four-faced)
Reflective mirror
Focusing lens
Laser driver PCB
DC controller PCB
Main controller PCB
Scanner motor
BD sensor
Содержание iR C1020 Series
Страница 1: ...Sep 8 2008 Service Manual iR C1020 Series iR C1021i ...
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Страница 18: ...Contents ...
Страница 19: ...Chapter 1 Introduction ...
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Страница 57: ...Chapter 2 Installation ...
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Страница 73: ...Chapter 3 Basic Operation ...
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Страница 81: ...Chapter 4 Main Controller ...
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Страница 97: ...Chapter 5 Original Exposure System ...
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Страница 113: ...Chapter 6 Original Feeding System ...
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Страница 133: ...Chapter 7 Laser Exposure ...
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Страница 143: ...Chapter 8 Image Formation ...
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Страница 181: ...Chapter 9 Pickup and Feed System ...
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Страница 281: ...Chapter 13 Maintenance and Inspection ...
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Страница 287: ...Chapter 14 Measurement and Adjustments ...
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Страница 293: ...Chapter 15 Correcting Faulty Images ...
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Страница 304: ...Chapter 15 15 8 15 3 2 2 Fans 0019 5064 F 15 11 T 15 3 Notation Name FM1 main unit fan FM2 duplex fan FM2 FM1 ...
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Страница 333: ...Chapter 17 Special Management Mode ...
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Страница 345: ...Chapter 18 Service Mode ...
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Страница 389: ...Chapter 19 Upgrading ...
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Страница 401: ...Chapter 20 Service Tools ...
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Страница 407: ...Sep 8 2008 ...
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