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TWAIN Driver Settings
file:///C|/Documents%20and%20Settings/mcampbell.AM/My%20Documents/ADS2000solutions/chapter3_10_3.html[3/11/2013 10:25:54 AM]
TWAIN Driver Settings
1. Resolution
You can select a scanning resolution from the Resolution drop-down list. Higher resolutions take more memory
and transfer time, but produce a finer scanned image.
Resolution Black & White/Gray
(Error Diffusion)
256 Color True Gray/24bit Color
100 x 100 dpi Yes Yes Yes
150 x 150 dpi Yes Yes Yes
200 x 200 dpi Yes Yes Yes
300 x 300 dpi Yes Yes Yes
400 x 400 dpi Yes Yes Yes
600 x 600 dpi Yes Yes Yes
1200 x 1200 dpi Yes No Yes
2. Scan Type
Select one of the following type:
• Black & White
Use for text or line art images.
• Gray (Error Diffusion)
Use for photographic images or graphics. (Error Diffusion is a method for creating simulated gray images
without using true gray dots. Black dots are put in a specific pattern to give a gray appearance.)
• True Gray
Use for photographic images or graphics. This mode is more exact due to using up to 256 shades of gray.
• 256 Color
Use for simple color illustrations that do not use the full color spectrum. Uses up to 256 colors to create images.