Canon ImageRunner iR8500 Series, Service Manual, Page: 266 / 1122

Chapter 5
5-14
[2] Approach run. Used to ensure that speed stabilizes.
[3] Image read. Used to read the image at a specific speed suited to the read ratio.
[4] Deceleration. Used to enable the scanner to speed down and stop promptly, starting at the end of the image.
Reversing the Scanner After Scanning in Main Reading Direction
When the image has been scanned, the No. 1 mirror base is moved in reverse to home position at the speed used for 50% reduction, regardless of the ratio
being used.
ERROR CODE:
E202 (HP detection error)
[1] The No. 1 mirror base does not reach the HP sensor within a specific period of time.
[2] The HP sensor identifies the presence of the No. 1 mirror base when the No. 1 mirror base should have been moved away.
E204 (image leading edge detection error)
[1] The image signal is not generated when the No. 1 mirror base is moving forward.
[2] The ADF does not generate the image leading edge signal in stream reading mode.
SERVICE MODE:
COPIER > ADJUST > ADJ-XY > ADJ-X (scanner image leading edge adjustment)
Enter an appropriate value to adjust the image leading edge position.
Range: 0 through 2970 (a change of '1' causes a shift of 0.1 mm)
COPIER > ADJUST > ADJ > XY > ADJ-S (scanner home position adjustment)
A numerical entry will adjust the home position (i.e., standard white plate reading position).
If dirt develops on the standard white plate, execute this adjustment so that the machine will take a reading while avoiding the area.
Settings: 0 to 4
F-5-20
F-5-21
5.3.2 Enlargement/Reduction
5.3.2.1 Changing the Reproduction Ratio in Main Scanning Direction
0006-9415
iR105i/iR105+ / iR9070
To execute scaling, image data is partially bypassed when it is written to the line memory (reduction), or image data is partially overlapped when it is read
from the line memory (enlargement).
5.3.2.2 Enlargement/Reduction(iR105)
0006-9489
iR105
T-5-11
Change iR105 GP605 (iR600)
Scanning speed at 100 %
copying 450 mm/s 260 mm/s
Enlargement/reduction
according to range By scanner, between 25 % and 400 %
In combination with digital method: in
fixed reading, between 25 % and 49.9 %;
in stream reading with ADF in use,
between 25 % and 84.9 % By scanner only, between 25
% and 400 %; no digital
method used
Vertical size plate
Standard white plate
Increase Decrease
Copyboard glass
Vertical size plate
Standard white plate
Increase Decrease
Copyboard glass
HP sensor