Canon iR2018 Series, Руководство по обслуживанию

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Chapter 4
4-7
a. Forward Movement during Image Scan
During image scan, operation of the contact image sensor (CIS) is controlled by controlling the motor as shown below.
F-4-12
b. Backward Movement after Image Scan
After image scan, the carriage moves back to the contact image sensor (CIS) shading position at the constant speed (118 mm/sec).
4.3.2 Contact Image Sensor (CIS)
4.3.2.1 Outline
0017-2628
The original is exposed to light and read using the contact image sensor (CIS) to read the image on a line-by-line basis.
T-4-4
Component Function
LED Illuminates the original.
Light guide Illuminates the entire image line with the LED light.
Rod lens array Collects the light reflected by the original.
CMOS sensor array Receives the light that passed through the rod lens array.
Start
position
Acceleration
Leading edge
of original
Constant speed
Trailing edge
of original Stop
Movement
speed
Movement distance
[1] [2] [3] [4]
[1] Acceleration area: The motor accelerates to the speed specified for each mode.
[2] Runup area: A margin to stabilize the speed.
[3] Image read area: The image is read at a constant speed.
[4] Deceleration area: Upon detection of the trailing edge, the motor decelerates rapidly and stops.
Deceleration