Cw Pickup/Delivery Fixed Reading - Canon DADF-Q1 Service Manual

2.6.2 CW Pickup/Delivery Fixed Reading

In fixed reading, the original is held in place on the copyboard glass, and is read by the scanner being moved by the host machine. Specifically,
a. Single-Sided Original
1) The machine picks up the 1st original, and butts its lead edge against the registration roller to remove the skew. (For details of pickup operation, see 'Original
Pickup/Separation.')
The machine rotates the registration roller and the transport belt to move the 1st original.
When the trail edge of the 1st original has moved past the pull-off roller, the machine starts pickup of the 2nd original. (advance pickup)
3) The machine rotates the registration roller and the transport belt to move the 1st original.
The machine moves the 1st original using the transport belt over a specific distance after its trail edge has moved past the pre-registration roller sensor (S2),
determining the original stop position.
4) The host machine starts printing operation using its scanner.
5) When the host machine's scanner starts to move in reverse, the machine rotates the transport belt in reverse to move the 1st original in the direction of delivery.
At the same time, the machine rotates the registration roller to move the 2nd original.
6) The machine moves the 1st and 2nd originals using the transport belt; rotating it over a specific distance after the trail edge of the 2nd original has moved past
the pre-registration roller paper sensor (S2) to determine the stop position for the 2nd original.
The machine moves the 1st original in the direction of delivery, stopping it on the copyboard glass.
1st original
Registration roller
Pull-off roller
Registration roller
Pre-registration
roller paper sensor(S2)
2nd original
F-2-36
2nd original
Transport belt
F-2-37
Transport belt
F-2-38
F-2-39
F-2-40
Chapter 2
0011-7304
2-23