
Chapter 5
5-1
5.1 Construction
5.1.1 Outline of the Original Exposure System(iR105)
0006-9374
iR105
The major changes made to the original exposure system are as follows:
- Enlargement/Reproduction
- 4-channel high-speed reading CCD (see discussions of image processing system)
- CCD adjustment (see discussions of image processing system)
- PCB arrangement
- ADF mechanism (new)
For others, see T02-202-01 for a table of differences.
T-5-1
5.1.2 Outline
0006-9406
iR105i/iR105+ / iR9070
Table shows the major functions of the original exposure system.
T-5-2
Unit/
location
Change from
GP605 (iR600)
Purpose of
change
Remarks
Reference
Reading
method
Changed the scanning
speed at 100 % to 450
mm/sec.
To support higher
speed of operation.
In the GP605
(iR600), 260 mm/
sec.
2.3 Enlargement/
Reduction
Used digital
enlargement/reduction
(between 25 % and 400
%).
To support higher
speed of operation.
In the GP605
(iR600), scanner
enlargement/
reduction only.
2.3 Enlargement/
Reduction
Reader unit
Added a scanner motor
fan.
To prevent
overheating of the
scanner motor.
2.4 Preventing
Overheating of the
Scanner Motor
Added a transformer
PCB.
To ensure stable
inverter power.
2.6 Stabilizing the
Scanning Lamp
Reader
controller
Located the reader
controller PCB where
the image processor
PCB was found.
2.5 Arrangement
of PCBs
Added a dust detection
mechanism.
To prevent image
faults.
2.8 Dust Detection
Function in stream
reading
ADF
Added open/closed
detection to the ADF.
To prevent wrong
detection.
2.7 Detecting the
State (open/
closed) of the ADF
Item
Description
Original illumination
Illumination by a fluorescent lamp
Original scanning
Book mode: scanning by the No. 1 mirror mount
ADF mode (one-side reading): scanning by stream reading (2
fixed points
of small-size reading and large-size reading)
ADF mode (double-sided reading): scanning by the No. 1 mirror
mount
Scanner position
detection
By a scanner home position sensor (PS1)
By an image leading edge sensor (PS3)
Enlargement/reduction
Main scanning direction: images are processed by a line memory
Sub scanning direction: No. 1 mirror mount is moved at different
speeds
Scanner drive control
No. 1 mirror mount: pulse control by a stepping motor (M5)
Lens mount: fixed in position
Содержание ImageRunner iR8500 Series
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Страница 33: ...Chapter 1 Introduction ...
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Страница 99: ...Chapter 2 Installation ...
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Страница 181: ...Chapter 3 Basic Operation ...
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Страница 247: ...Chapter 5 Original Exposure System ...
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Страница 258: ...Chapter 5 5 6 T 5 6 1 Fuse PCB 4 Inverter PCB 2 Reader controller PCB 5 CCD AP PCB 3 Differential PCB ...
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Страница 307: ...Chapter 6 Image Processing System ...
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Страница 319: ...Chapter 7 Laser Exposure ...
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