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COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
3-3
CHAPTER 3 ORIGINAL EXPOSURE SYSTEM
B. Basic Sequence of Operations
• book mode, 1 original
Figure 3-103 Basic Sequence of Operations
Figure 3-104 Scanner Movement
Main power
switch ON
Copy Start
key ON
Original set
Shading correction
INTR
WMUP
SLEEP WMUPR LSTRSTBY SCFW
SCRV
STBY
GAIN
1.5 sec
Scanner motor (M5)
HP search
Initial activation
Controlled to 70˚C
70˚C
· Lamp performance measurement
· Heating
OFSET
[1] In book mode, turns on as soon as the original size is found.
[2] In ADF mode, turns on as soon as an original is placed in the ADF.
Fluorescent lamp
heater (H5)
Scanning lamp pre-
heat voltage
Scanning lamp
(FL1)
Scanner HP sensor
(PS1)
Controlled
to 70˚C
Image leading edge
signal (ITOP)
1st page image
leading edge
Control panel
power
switch ON
If not at HP, HP search.
Reading the standard white plate.
Synchronizing in sub scanning direction.
If for scanning two or more pages, kept on
also in reverse to stabilize light intensity.
1) HP search at power-on
2) Shading correction position
3) Pre-scanning
(speed used at 50% reduction)
4) Original scanning
(book mode)
4) Original scanning
(ADF mode; stream reading)
4) Original scanning
(ADF mode; stream reading)
Image leading edge
Original
HP
Scanner HP sensor
Image leading edge sensor
52.5 mm
185 mm
385 mm
Small-size position
(less than 216 mm long)
Large-size position
(216 mm or longer)