COPYRIGHT © 2000 CANON INC.
2000 2000 2000 2000
CANON iR5000/iR6000 REV.0 JULY 2000
CHAPTER 2 ORIGINAL EXPOSURE SYSTEM
2-1 R
Item
Scanning lamp
Original Scanning
Scanner position detection
Reproduction ratio (zoom)
Scanner drive control
Lens
Scanning lamp activation
Original size detection
1. Outline of Operations
1.1 Outline
The major functions of the original exposure system are as follows:
Description
Xenon lamp
In book mode: by moving the scanner.
With ADF in use: by stream reading while holding the No. 1
mirror base fixed in position.
By scanner HP sensor (PS39)
[1] Using the Copyboard: 25% to 400%
•
In main scanning direction, image processing is per-
formed by the controller unit.
•
In sub scanning direction, the speed of the No. 1 mirror
base is changed (50% or higher), in addition, the image
data is processed by the controller unit (lower than
50%).
[2] Using the ADF: 25% to 200%
•
In main scanning direction, the image data is processed
by the controller unit.
•
In sub scanning direction, the speed at which the origi-
nals are moved is changed (50% or higher), in addition,
the image data is processed by the controller unit
(lower than 50%).
The No.1/No.2 mirror base is controlled by means of a step-
ping motor (M3).
Lens array (fixed in position)
[1] Turned on by an inverter circuit.
[2] Monitored for errors.
[1] In book mode, by a reflection type sensor in sub scan-
ning direction; by a CCD in main scanning direction.
[2] With the ADF in use, by the ADF.
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Summary of Contents for IR5000 - iR B/W Laser
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