14 June, 2002 ADF/SCANNER
6-7
Detailed
Descriptions
Image Scanning
When the document [A] sent from R1 (transport roller 2) passes the scanning glass
[B], the LED [C] inside the CIS shines light onto the image side of the document
above and this light with the image is reflected down into the CIS [D].
After the Start key is pressed, the machine stabilizes the LED light for one second.
If the light is not stabilized after 3 seconds, scanning continues but the machine
returns error code 1-08.
Shading correction is executed only for the first page. However, by default the
white plate is scanned every 30 seconds to determine the white level for shading
correction, and the document must be stopped momentarily for peak level
sampling.
With Address 401CAE, the time between peak level samples can be adjusted and
peak level sampling can be set for the first page only.
ADDRESS INITIAL DESCRIPTION
401CAE 0x1e
Execution of white peak level correction can be adjusted with
these settings:
00h: Every page (same as FAX 5000L).
1Eh: Every 30 s (default)
FFh: Full non-stop. Peak level correction done for only the first
page.
NOTE: If scanning is set for full non-stop scanning, then the following data cannot
be acquired: shading data, white level peak value, black line detection and
control data. Not detecting this data could increase the possibility of image
problems, such as vertical black lines caused by dirt on the exposure glass
or on the white plate or changes in halftone density caused by changes in
temperature. Be sure to consult with the customer before changing this
setting.
H310D006.WMF
[A]
[B]
[C] [D]
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