31 March, 1997
SCANNER
2-1
Detailed
Descriptions
2. DETAILED DESCRIPTIONS
2.1 SCANNER
2.1.1 DOCUMENT FEED MECHANISM
The feed roller [A] feeds the document into scanner, and the separation pad [B]
prevents more than one sheet of the document from feeding.
When the document reaches the scan line, the Tx motor stops until the machine is
ready for scanning.
While scanning, the CIS roller [C] and the R2 rollers [D] feed the original.
NOTE:
The pressure applied to the separation plate is adjustable. Refer to
section 6.1.1.
2.1.2 SCANNING
Every time the machine scans a document, the CIS (Contact Image Sensor),
scans the CIS roller (a white roller located on the CIS) before scanning the first
page, to get a base white waveform. This white waveform is used for the shading
correction that is used while scanning all pages of the document. So, if the CIS
roller becomes dirty, the scanned image becomes darker.
NOTE:
The cleaning procedure for the CIS roller is explained in section 6.3.1,
as well as in the operator’s manual.
H905D001.cdr
[A]
[B]
[C]
[D]
