Canon Color Image Reader-F1 Service Manual page 14

2
Technology > Basic Configuration (Reader) > Parts Configuration > LED lamp unit
■ Scanner Unit
Original exposure and scanning are performed by the integrated scanner unit of LED,
turndown mirror, free curved mirror, and Reading sensor.
Light emitted from LED is reflected by the original and reaches the Reading Sensor
throughthe Reflection Mirror and the newly developed Lens Unit.
Lens
mirror
No.4
mirror
No.2
mirror
No.5
Lens
2 Technology > Basic Configuration (Reader) > Parts Configuration > LED lamp unit
LED (light source)
mirror No.3
mirror No.1
CCD
Red (R) line
Green (G) line
Blue (B) line
Black & White (B/W) line
F-2-2
■ LED lamp unit
On LED lamp unit, the light is generated from the 2 LED lamp PCBs (LED chip: 48 pieces
per PCB).
Generated light is exposed to the original through the reflection plate.
● New lenses
By using the Lens Unit with 4 lenses combined, a compact Scanner Unit is achieved..
● Reading sensor
Reading sensor scans the image per 1 image line.
Reading sensor has 4 lines (R, G, B, BW). At 600dpi B&W reading, 1 line (B/W) is used. At
color reading, 3 lines (R, G, and B) are used.
Error codes
E301 (insufficient light intensity)
• 0001 The light intensity during front side shading is lower than the standard level
E302 (Shading error)
• 0001 Error in paper front white shading
• 0002 Error in paper front black shading
Controls
2-3
2-3