Plustek Opticpro A320E Flatbed Scanner - Manual (Page 46)

The TWAIN Interface 11
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Width, Height:
Specifies the exact width and height of the page area.
Paper Alignment:
This setting tells the scanner how you place the document on the scanner
glass.
When Flatbed Reflective is selected as the Scan Type :
· Upper Left : Place a document face down onto the scanner glass and align
the document top with the arrow on the reference mark.
· Center : Align the center top of the document with the center of scanner
glass's right side.
2.2.1.4 Scan Mode
Tells the scanner what type of documents you are scanning. The following
options are available from the drop-down list:
· Black & White -- scans in black and white and is suitable for scanning text.
· Grayscale -- scans in 256 shades of gray, giving black and white images
depth and shadow.
· 24-bit Color -- scans in millions of colors (24-bit) but takes up a lot of memory.
· 256 Color (8-bit) -- scans in standard 256 colors. The image quality of its
resulted image is inferior than that of "24-bit Color", but its data size is
smaller. Choose this mode if you want to scan color documents but care
more on the file size than image quality.
· Auto -- use this setting if you want the scanner to detect the scan mode
automatically. (This function may or may not be available depending on the
scanner model you purchase.)
2.2.1.5 Document Type
This function allows you to select the type of content on the scanned
documents for better scanning results. The following options are available from