Chapter 5
5-1
5.1 Construction
5.1.1 Specifications/controls/functions
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iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
The major specifications, controls and functions of the original exposure system are described below.
Item
Description
Original exposure
Indirect exposure by LED (LED & photoconductive body)
Original scan
In book mode: scan by movement of CCD
In ADF mode: stream reading with CCD fixed
Read resolution
600 dpi (main scanning) x 600dpi (sub scanning)
Gradation
256 gradation, 8 bit
Scanning speed (in ADF mode) 51 ipm (single sided, A4,LTR)
Carriage position detection
CCD unit HP sensor (SR1)
Magnification
25% to 400% (in ADF mode: 25% to 200%)
Main scanning direction:
image is processed on main controller PCB.
Sub scanning direction:
In book mode:
speed change by carriage travel, image process on reader controller PCB, image process on main
controller PCB *1
In ADF mode:
original feed speed change, image process on reader controller PCB, image process on main
controller PCB *1 original feed speed change, image process on reader controller PCB, image
process on main controller PCB *1
Lens
Gauss lens
CCD
Number of lines: 4 (R, G, B, B/W)
Number of pixels: 7500 x 3 color lines, 7500 x 1 B/W line
Maximum original read width: 304mm
CCD unit drive control
By reader motor (M1)
Original size detection
[1] in book mode
Main scanning direction: by CCD
Sub scanning direction:
by reflection sensor
[2] in ADF mode
Width:
by original width volume/photo interrupter on ADF
Length:
by photo interrupter on ADF
*1 Controls differ depending on magnifications. Refer to [Magnifications] for more information.
Содержание iR3245
Страница 1: ...Jul 3 2008 Service Manual iR3245 3235 3230 3225 Series...
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Страница 25: ...Chapter 1 Introduction...
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Страница 65: ...Chapter 2 Installation...
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Страница 121: ...Chapter 3 Basic Operation...
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Страница 129: ...Chapter 4 Main Controller...
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Страница 134: ...Chapter 4 4 2 F 4 1 1 5 8 9 11 14 12 3 4 10 2 13 7 15 16 17...
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Страница 153: ...Chapter 5 Original Exposure System...
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Страница 185: ...Chapter 6 Laser Exposure...
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Страница 197: ...Chapter 7 Image Formation...
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Страница 227: ...Chapter 8 Pickup Feeding System...
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Страница 297: ...Chapter 10 External and Controls...
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Страница 343: ...Chapter 11 MEAP...
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Страница 425: ...Chapter 14 Standards and Adjustments...
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Страница 433: ...Chapter 14 14 5 Execute the following in Service Mode ADF white level adjustment COPIER FUNCTION CCD DF WLVL1 2 3 4...
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Страница 437: ...Chapter 15 Correcting Faulty Images...
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Страница 465: ...Chapter 16 Self Diagnosis...
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Страница 493: ...Chapter 17 Service Mode...
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Страница 691: ...Chapter 18 Upgrading...
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Страница 739: ...Chapter 19 Service Tools...
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Страница 741: ...Contents Contents 19 1 Service Tools 19 1 19 1 1 Special Tools 19 1 19 1 2 Oils and Solvents 19 1...
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Страница 745: ...Jul 3 2008...
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