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3.2.2
-Si type
The irradiated light emitted from the LED array is reflected by the docu-
ment, and is received by the photo-transistor array.
Glass substrate
LED array
The glass substrate has a built-in driver circuit for amplifying the output of
the received light, and the output of that driver circuit is converted to serial
data to be transmitted to the system controller.
Sensor
Sensor
Fig. 3-15
-Si Type (cross-section view)
LED
Fig. 3-16
-Si Type
READING SECTION
Document feed direction
Document
3–13
1
2
3
4
5
6
ït
çi
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