3.2.1 Scanner Mechanism; 3.2.1 Scanner ; Mechanism - Page 48

Confidential

3 - 3

3.2.1 Scanner 

Mechanism 

This mechanism consists of the document cover, the scanner unit (scanner cover), and the  
automatic document feeder (ADF). 

The scanner unit consists of a scanner top cover, CIS unit, CIS drive assembly, and scanner base. 

The detailed illustration on the next page shows the components making up the ADF: document  
pull-in roller, document separation roller, document feed roller, ADF motor, and document front  
and rear sensors. 

For further details on the sensors, see 

Section 3.2.3

. 

Scanner base 

CIS rail 

CIS idle pulley 

CIS drive belt 

CIS unit

CIS flat cable 

CIS drive ASSY
(CIS motor) 

Scanner top cover

White-level reference film 

Document cover

ADF 

ADF & document
cover ASSY 

Scanner unit
(Scanner cover)