Document Exposure; External View; Cross Section - Canon imageRUNNER ADVANCE C3325 Series Service Manual

2
Technical Explanation > Document Exposure > Overview > Cross Section

Document Exposure

Overview
■ Features
• Low energy consumption by adopting a new Scanner Unit
■ Specifications
Item Specification/function
Exposure system High-brightness white LED + reflection plate
Original In BOOK Scan by movement of scanner unit
scan mode
In DADF Scan by original stream reading with scanner
mode unit fixed
Scanning 600 dpi x 600 dpi
resolution 300 dpi x 300 dpi
Gradation 256 gradations
Carriage position Scanner Unit HP Sensor (PS_A1)
detection
Magnification B&W: scan magnification change (Vertical
change 2-line skipping: 25 to 50%)
Color: digital reproduction
In horizontal Image processing in main controller PCB
direction
In vertical Image processing in main controller PCB
direction
Number of line of 4 lines (R, G, B, B/W)
Reading sensor
Original In BOOK Horizontal direction: detection by Scanner unit
size mode sensor (scanner unit)
detection
Vertical scanning: Detection by the Reflection
Sensor (Original Size Sensor (AB configuration/
AK configuration) or Original Size Sensor (Inch))
In DADF Horizontal scanning: Detection by the Photo
mode Interrupter
Vertical scanning: Detection by the Photo
Interrupter and Reflection Sensor
Maximum In BOOK 297 mm x 431.8 mm
original mode
size
In DADF 297 mm x 630 mm
mode
2 Technical Explanation > Document Exposure > Overview > Cross Section

■ External View

Remarks
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[1]
[3]
[5]
[7]
[9]
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[11]
Scan magnification change is
also used for 300dpi-SEND job

■ Cross Section

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Total 1 point (2 points for
global)
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T-2-1
[1]
[3]
[7]
[6]
[5]
[4]
[3]
[2]
[1]
Reader Left Cover [2]
Reader Hinge Lower Cover (Left) [4]
Reader Glass Support Cover [6]
Reader Hinge Lower Cover (Right) [8]
Reader Front Cover (Small) [10]
Reader Front Cover
[1]
[3]
Stream Read Glass [2]
Scanner Unit
2-3
[10]
[11]
[9]
[8]
F-2-2
Reader Left Retaining Cover
Reader PCB Cover
Reader Rear Cover
Glass Cleaning Sheet Storage Box
Reader Right Retaining Cover
[2]
F-2-3
Copy Board Glass
2-3