Canon fax basic 2000 サービスマニュアル
3–5
1
2
3
4
5
6
ït
çi
READING SECTION
Fig. 3-5 Flat-bed type ADF
Now, let’s take a look at which operations are performed.
(1) Document forwarding operation
When the document is inserted in the ADF section and pushes up the actu-
ator on the document sensor, the forwarding roller picks up the document
as far as the separation roller and separation guide.
Fig. 3-6 Document Pickup
Document
feed path
Document pressure
plate
plate
Document sensor
actuator
actuator
Separation
guide
guide
Upper feed roller
Document edge
sensor actuator
sensor actuator
White mylar sheet
Upper eject roller
Forwarding roller
Separation roller
Feed roller
Contact sensor
Eject roller
Document
Document pressure
plate
plate
Document sensor
actuator
actuator
Separation guide
Forwarding roller
Separation roller