UMAX Technologies Astra 4000 - Manual (Page 20)

To change the Descreen setting:
1. Click the Descreen option to display the drop down menu.
2. Choose one of the Descreen options:
No Descreen – No Descreening.
Magazine – Specifies 133 lines per inch. This option smoothes the fine dot pattern found in glossy
magazines.
Newspaper – Specifies 85 lines per inch. Smoothes the coarse grain pattern commonly found in
newspaper images.
Art Print – Specifies 175 lines per inch. Smoothes the fine dot pattern found in high quality art print.
Custom – Opens the Custom Descreen window, which allows you to specify a custom line screen
value. Refer to the Using Custom Descreen Settings section for information about how to set custom
descreen values.
Using Custom Descreen Settings
You can also specify custom descreen settings that you can use when you want to change the lines per inch
setting to eliminate patterns that are generated while scanning printed images. You can enter custom
settings that range from 35 to 400 lines per inch. To define the custom descreen settings:
1. Choose the Custom… option from the Descreen drop down menu. The Custom Descreen window
opens.
2. Enter the desired lines per inch setting (between 35 and 400 lpi) in the Custom descreen lpi #1 text
box.
3. Repeat step 2 to define the Custom descreen #2 and Custom descreen #3 settings.
4. Click OK. The settings you defined appear on the Descreen setting drop down menu, under the
Custom heading.
Changing the Filter Setting
Image filters are used to soften or sharpen edges and boundaries of an image.
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