50
Shading Adjustment
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What is the purpose of the shading adjustment?
The process whereby the variations in the distribution of the lamp’s light quantity are transformed into a fixed output
within the scanning range is known as shading adjustment. It can be carried out by means of the User Utility using
the special shading paper which is provided with this scanner.
¥
When shading adjustment is required
Proceed with the compensation when the colors in some parts of the scanned images differ in the extreme, or when
the image quality fails to be improved even after the inside the scanner is cleaned.
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Before proceeding with the shading adjustment
Before adjusting the shading clean the scanning section glasses and both sides of the reference plates of the upper
and the lower. (See pages
34
through
35
and
37
through
42
.)
Set the plates to white side before adjusting the shading.
Do not turn off scanner while shading is being performed. This step will take approximately 5 minutes.
If the shading adjustment is carried out while these parts are still dirty, it will not be possible to eliminate the lines that
form on the scanned images.
¥
Shading adjustment procedure
1
Switch on the power while pressing the
3
key.
The LCD displays as shown on the
right. When “High Speed Scanner”
message appears on the LCD, release
the
4
key.
2
Place the shading paper side ways on
the ADF hopper.
3
Press the STOP/START key.
≥
If the reference plates are black, the “Turn
Plates!” message will appear, open the
front door and change the upper and the
lower reference plates to the white side
and close the front door.
A d j .
S h a d i n g
a a a a a a a a a a a a a a a
S T A R T
Scanning direction
Shading paper
D o n ’ t
t u r n o f f
> > > > > > > > > > > > > > > > > > > >
T u r n
P l a t e s !
F r o n t : B – > W
>
B a c k : B – > W
Summary of Contents for KV-S3085
Page 6: ...Notice 6 Caution Labels ...
