Brother International MFC-8680DN Software Users Manual - English - Page 45
Resolution, Scan Type, Reduce Noise, Black & White, Gray Error Diffusion, True Gray, Color - specifications
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Scanning Resolution 2 You can choose a scanning resolution from the Resolution drop-down list. Higher resolutions take more memory and transfer time, but produce a finer scanned image. The following table shows the resolutions you can choose and the available colors. 2 Resolution Black & White/ 256 Color True Gray/24 bit Color Gray (Error Diffusion) 100 × 100 dpi Yes Yes Yes 150 × 150 dpi Yes Yes Yes 200 × 200 dpi Yes Yes Yes 300 × 300 dpi Yes Yes Yes 400 × 400 dpi Yes Yes Yes 600 × 600 dpi Yes Yes Yes 1200 × 1200 dpi Yes No Yes 2400 × 2400 dpi Yes No Yes 4800 × 4800 dpi Yes No Yes 9600 × 9600 dpi Yes No Yes 19200 × 19200 dpi Yes No Yes Scan Type 2 Black & White Use for text or line art. 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 the appearance of gray.) True Gray Use for photographic images or graphics. This mode is more exact because it uses up to 256 shades of gray. 256 Color Uses up to 256 colors to scan the image. 24 bit Color Uses up to 16.8 million colors to scan the image. Although using 24 bit Color creates an image with the most accurate color, the image file will be about three times larger than a file created with 256 Color. It requires the most memory and has the longest transfer time. Reduce Noise 2 You can improve and enhance the quality of your scanned images with this selection. The Reduce Noise setting is available when using 24bit Color and scan resolutions of 300 x 300 dpi, 400 x 400 dpi or 600 x 600 dpi. 37