Book Mode, 1 Original, Copyboard Cover Close - Canon ImageRunner iR8500 Series Service Manual

[3] An original is placed.
The width of the original is identified inrelation to the presence/absence of externallight; here, the absence of an original is identified at points in question,
eliminating B5, B4, A4, and A3.
[4] The Start key is pressed.
In response, original detection is started.
For main scanning direction, the xenon lamp is turned on to check for reflected light by the CCD (4 points). For sub scanning direction, the original sensor
starts detection. The absence of external light is identified as indicating the absence of an original. The machine will identify the size of an original based
on the combination of the results.
AB-Configuration
Origi
nals
size
A3
B4
A4R
A4
B5
B5R
None no

5.3.4.7 Book Mode, 1 Original, Copyboard Cover Close

/ iR8070
[1] The scanner remains in wait.
No. 1 mirror base: HP
Xenon lamp: off
Original sensor: disabled
(external light)
(external light)
Point of CCD
Original
detection
1 2 3 4 sensor
yes yes yes yes yes
yes yes yes no yes
yes yes no no yes
yes yes yes yes no
yes yes yes no no
yes no no no yes
no no no no
F-5-37
Original (A4R)
F-5-38
F-5-39
T-5-15
Inch-Configuration
Originals Point of Originals
CCD
detection
size 1 2 sensor
11"x 17" yes yes yes
LGL yes no yes
LTRR yes no no
LTR yes yes no
None no no no
yes: reflection present no: reflection absent
Chapter 5
0008-7415
5-23