2 - E - 8
READ SECTION
b. Scanning operation of the exposure unit
Scanning speed
c. Position of each sensor
Magnification Scanning speed
Forward 370 mm/sec (life size)
Return 1520 mm/sec
d. Home position sensor of the exposure unit
If the exposure unit is not in the home position when the
main switch is turned ON, M12 rotates at low speed in the
reverse direction until PS7 (optics sensor) and PS5 (optics
return) are turned ON, thus detecting the fact that the optics
unit is in the home position.
e. Shading correction read operation
At the position where PS3 (shading) goes ON, the light
reflected from the white reference plate installed under-
neath the glass stopper plate is read.
f. Other operations
(1) During copying
a) When manual density has been selected
1 During a platen copy operation
(Exposure unit)
Exposure scan
(Setting a original)
2 During an ADF copy operation
(Original conveyance)
Exposure scan
Exposure scan
(Exposure unit)
Stop
Stop
b) AES mode
1 During a platen copy operation
Exposure scan
AES scan
(Exposure unit)
(Setting a original)
2nd original feed
1st original feed
Copy button pressed
Press Copy button
L1 OFF
L1 ON
Shading correction
read operation
Home position
(PS7 and PS5 ON)
PS3
PS3 PS7 PS5 PS4 PS2 PS1
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