Original Detection - Canon mf6600 Series Service Manual

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Technical Overview > Document Exposure/feeder System > Document Feeder System > Original Detection
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Original Detection

There are two types of Original Detection in this Equipment.
1. Original Presence / Absence Detection
Detected by DS (Document Sensor: PS703)
Setting the original onto the original tray pushes up the actuator, activating (light shielded
=>light transmitted) the DS (PS703), and resulting in detection of the
presence of original.
2. Detection of the End of the Original
Detected by the DES (Document End Sensor: PS702)
The leading edge of the original that is fed pushes up the actuator, activating the DES (PS702)
(light shielded =>light transmitted) and resulting in detection of the reach of the leading edge
of original. Furthermore, when the trailing edge of the original passes the actuator position,
the actuator returns to the original position, inactivating the DES (PS702) (light transmitted =>
light shielded). The trailing edge of the original is detected by this mechanism. The original
length that can be scanned with this equipment is less than 400 mm. Passing of the original
longer than this results in jam stop. The original length is calculated by the time it takes from
detection of the leading edge of the original to detection of the trailing edge of the original..
MEMO:
There is no function to detect the original size (original width, length) in this equipment.
2 Technical Overview > Document Exposure/feeder System > Document Feeder System > Original Detection
PS703
PS702
J755
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ADF/Reader
driver PCB
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F-2-7 F-2-7
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