UMAX 2200 用户指南
Changing the Descreen Feature
The Descreen option helps eliminate the patterns that can appear when you scan printed images found in
magazines, brochures, catalogues, etc. This is accomplished by changing the number of lines that appear in
every inch (lines per inch) of the scanned image.
The Descreen feature is unavailable when you have chosen the B/W Document, Fax, or OCR resolution
settings.
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.
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.
newspaper images.
Art Print – Specifies 175 lines per inch. Smoothes the fine dot pattern found in high quality art prints.
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 to set custom descreen
values.
value. Refer to the Using Custom Descreen Settings section for information 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 re 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 Descreen widow opens.
2. Enter the desired lines per inch setting (between 35 and 400 lpi) in the Custom descreen lpi #1 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.
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