Chapter 4
4-9
4.3.3 Enlargement/Reduction
4.3.3.1 Magnification Change in Vertical Scan Direction
0017-2631
In the Book mode or when the ADF is used
In the vertical scan direction, the image is read at 100%. Magnification is changed by processing data on the image processor PCB.
4.3.3.2 Magnification Change in Horizontal Scan Direction
0017-2632
In the horizontal scan direction, magnification is changed as follows depending on the selected magnification rate:
1) When magnification is reduced to 50-99%
a. In the Book mode
Data is processed on the image processor PCB with the original scan speed held at 118 mm/sec.
b. When the ADF is used
The original feed speed is changed within the range of 118 mm/sec to 236 mm/sec depending on the selected magnification rate. Data is not processed on the image
processor PCB.
2) When magnification is increased to 100-200%
The original scan speed (in the Book mode)/original feed speed (when the ADF is used) is changed within the range of 118 mm/sec to 59 mm/sec depending on the
selected magnification rate. Data is not processed on the image processor PCB.
4.3.4 Detecting the Size of Originals
4.3.4.1 Outline
0017-2633
The original size is identified by the combination of presence and absence of output levels of the reflection type sensors as summarized in the tables below.
- Absence of paper: The light reflected from the reflection type sensor changes when the copyboard cover is open/close.
- Presence of paper: The light reflected from the reflection type sensor does not change when the copyboard cover is open/close.
This machine is provided with the following sensors. Locations of the sensors are shown below.
- Vertical scan direction: Reflection type photo sensors (2 locations for AB; 1 location for Inch)
- Horizontal scan direction: Reflection type photo sensors (2 locations for AB; 2 locations for Inch)
F-4-15
4.3.4.2 Outline of Original Size Detection
0017-2634
- In the BOOK mode
One sheet of original (A4R) is set and the copyboard cover (or ADF ) is closed.
B5
A4R
A4
STMT-R
LTR-R
LTR
11"
17"
LGL
B5R
Index plate
Original sensor 3
B4
A3
AB-Configration
Inch-Configration
Original sensor 5
Upper left corner
of original
Upper left corner
of original
V
e
rtical scan direction
V
e
rtical scan direction
Horizontal scan direction
Horizontal scan direction
Original sensor 1
Original sensor 2
Original sensor 4
Original sensor 3
Original sensor 1
Содержание iR2018 Series
Страница 1: ...Oct 11 2007 Service Manual iR2030 2025 2022 2018 Series iR2030 ...
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Страница 19: ...Chapter 1 Introduction ...
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Страница 42: ...Chapter 1 1 20 1 2 7 Function List 1 2 7 1 Printing Speed iR2030 iR2030i 0017 5909 ...
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Страница 47: ...Chapter 2 Installation ...
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Страница 80: ...Chapter 2 2 30 ...
Страница 81: ...Chapter 3 Main Controller ...
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Страница 97: ...Chapter 4 Original Exposure System ...
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Страница 100: ...Contents 4 4 8 2 Removing the Reader Heater Left 4 20 ...
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Страница 123: ...Chapter 5 Laser Exposure ...
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Страница 133: ...Chapter 6 Image Formation ...
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Страница 149: ...Chapter 7 Pickup Feeding System ...
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Страница 185: ...Chapter 9 External and Controls ...
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Страница 203: ...Chapter 10 RDS ...
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Страница 215: ...Chapter 11 Maintenance and Inspection ...
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Страница 221: ...Chapter 12 Standards and Adjustments ...
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Страница 227: ...Chapter 12 12 3 ...
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Страница 229: ...Chapter 13 Correcting Faulty Images ...
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Страница 244: ...F 13 11 F 13 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 ...
Страница 245: ...Chapter 14 Self Diagnosis ...
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Страница 261: ...Chapter 15 Service Mode ...
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Страница 319: ...Chapter 16 Upgrading ...
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Страница 341: ...Chapter 17 Service Tools ...
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Страница 343: ...Contents Contents 17 1 Service Tools 17 1 17 1 1 Special Tools 17 1 17 1 2 Oils and Solvents 17 1 ...
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Страница 347: ...Oct 11 2007 ...
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