Brother International ADS-2800W Users Guide - Page 127

Scan Using Your Computer 2 Resolution 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 100 x 100 dpi 150 x 150 dpi 200 x 200 dpi 300 x 300 dpi 400 x 400 dpi 600 x 600 dpi 1,200 x 1,200 dpi 3 Scan Type 6 Select one of the following:  Auto Automatically detects whether the document uses color and generates a scanned image of it. For documents that mix color and black and white pages, color pages will be scanned in Color mode, while black and white pages will be scanned in Black & White mode.  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 grayscale 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.  24bit Color Uses up to 16.8 million colors to scan the image. Although using 24bit Color creates an image with the most accurate color reproduction, it requires the most memory and has the longest transfer time. 111