How Do I - Contex AA51A Operator's Manual

Using the scanner, how do I ...?
5.3.4 How do I... apply the Background (Backg.) Clean filter?
B ackground clean is used if you have an original with a background that is not as completely
w hite as you would like it. If you want the background to appear pure white in the copy, then
yo u can increase the background clean value. Background clean should be used with caution,
a s it can also affect light colors that you will not consider as part of the background.
T he Background clean setting is a "cutoff" point. Pixels with a lightness under the setting's
va lue are affected. The higher the Backg. Clean value, the larger the range of pixels that will
b e turned to white. You can define cutting points from 0 to 12. The default value is zero (no
e ffect).
E xample:
Y ou have copied an original and want to improve it through bringing out the text by making the
background whiter. You can adjust the background clean value upwa
zero (to 12, for example) and thus make the pixels at high lightness levels go to white.
The option's setting will be applied when you press either the Color Copy or B&W Copy butto
Color B&W
Copy Copy
To apply the Backg. Clean filter
On the iJET Panel –
Menu
1. Press the
2. Use the arrow up/down buttons
shows Backg. Clean as shown below.
> Backg. Clean
0
Ente r
3. Press to move the ">" marker down to
Clean setting.
Backg. Clean
> 0
4. Press the arrow up
higher the value, the larger the umber of shades that will be converted to white in the copy
Backg. Clean
> 10
Enter
5. Press the
Menu level indicating that the value is set and you can step on through the menu option
needed. The new Backg. Clean setting will be applied every time you press the Color C
or the B&W Cop y button until you repeat the steps above to change it.
> Backg. Clean
10
button to enter the main Menu.
to move through the Menu options until the display
The ">" marker is down to the value level so you can
change the setting.
or arrow down button
button to accept the selected setting. The ">" marker will move up to the
The ">" marker is on the Menu level. You can continue
navigating the menu options with the arrow up/down
buttons.
rds from its default of
indicate you want to change the Backg.
to change the Backg. Clean value. The
5-13
n.
.
s if
opy