Mechanisms; Transmitting Mechanism (Feeding And Scanning Documents); Automatic Document Feeder (Adf); Scanner - Brother FAX100 Service Manual

2. MECHANISMS

2.1

Transmitting Mechanism (Feeding and Scanning Documents)

The transmitting mechanism consists of the document stacker, automatic document feeder
(ADF), document feeding related rollers, scanner, and document sensors. (For details about
the sensors, refer to Section 2.3.)
If the operator sets documents on the stacker and starts the sending operation, the ADF
feeds those documents into the equipment, page by page. Each document advances with
the separation roller to the scanner, and then it is fed out of the equipment with the LF roller.
For the drive power source, refer to Section 2.4.
Document
Separation roller ASSY
2.1.1

Automatic document feeder (ADF)

The ADF, which consists of the separation roller and separator, feeds documents set on the
document stacker, starting from the bottom sheet to the top, page by page, due to the fric-
tional difference among the separation roller, the documents, and the separator.
2.1.2

Scanner

The scanner uses a charge coupled device (CCD) image sensor.
As shown below, the LED array illuminates a document and the reflected light of the scanned
image data is transmitted via the mirrors into the lens which reduces the scanned data so as
to form the image on the CCD.
CCD PCB
Lens
Mirror
Roller (mounted on
the panel rear cover)
Pressure roller
Separation roller ASSY
Mirrors
III – 2
LF roller ASSY
Bar lens
LED array
(Front)
(Front)