Canon iR7086 Series Service Manual page 188

Chapter 5
Original size detection
5.1.2 Specifications, Controls, and Functions
iR7086
The specifications, controls, and functions of the machine's original exposure system are as follows:
Scanning lamp
Original scanning
Original reading resolution
Halftone
Scanning position detection
lens
Magnification
Scanner drive control
Scanning lamp control
5-2
Item
[1]book mode
sub scanning direction: by reflection type sensor
main scanning direction: by CCD
[2] ADF mode
main scanning direction: by slide guide in ADF
sub scanning direction: by photosensor in ADF
Item
xenon lamp
book mode: by moving the scanner
ADF mode: by moving original
600 x 600 dpi (main scanning x sub scanning)
256 gradations
by scanner HP sensor
single-focal point, fixed type
[1] in platen mode: 25% to 400%
main scanning direction: image processing by controller block
sub scanning direction: scanning speed variation (No. 1 mirror base; 100% or
higher)
in combination with image processing by reader block (50% or higher and lower
than 100%)
in combination with image processing in reader block and controller block (lower
than 50%)
[2] ADF mode: 25% to 200%
main scanning direction: image processing in controller block
sub scanning direction: original movement speed variation (50% or higher); in
combination with image processing in controller block (lower than 50%)
No. 1/2 mirror base: control by pulse motor
[1]activation control by pulse motor
[2]error detection control
Description
T-5-2
Description
0011-1804