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COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
3-1
CHAPTER 3 ORIGINAL EXPOSURE SYSTEM
I . OPERATIONS
A. Outline
Table 3-101 shows the major functions of the original exposure system.
Table 3-101 Major Functions
Original illumination
Original scanning
Scanner position
detection
Enlargement/reduction
Scanner drive control
Original size detection
Others
Scanning lamp control
Book mode: scanning by the No. 1 mirror mount
ADF mode (one-side reading): scanning by stream reading (2 fixed points
of small-size reading and large-size reading)
ADF mode (double-sided reading): scanning by the No. 1 mirror mount
Illumination by a fluorescent lamp
By a scanner home position sensor (PS1)
By an image leading edge sensor (PS3)
Main scanning direction: images are processed by a line memory
Sub scanning direction: No. 1 mirror mount is moved at different speeds
No. 1 mirror mount: pulse control by a stepping motor (M5)
Lens mount: fixed in position
[1] Pre-heat control by a fluorescent lamp heater
[2] Pre-heat voltage control
[3] Initial activation control
[4] Intensity control by an intensity sensor
[5] Fluorescent lamp life detection
[1] By an original size sensor
[2] By the ADF
Copyboard glass sensor (PS57)
Fluorescent lamp temperature sensor (H5): detects the temperature of the
fluorescent lamp heater
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