UMAX e3420 用户指南
UMAX AstraNET e3420 / AstraNET e3470 Owner’s Guide
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4.
Click OK. The settings you defined appear on the Resolution
setting drop down menu, under the Custom heading.
setting drop down menu, under the Custom heading.
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.
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.
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.
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.
grain pattern commonly found in newspaper images.