Brother International MFC 640CW Software Users Manual - English - Page 121

Scanning Color Type 9 „ 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 the gray appearence.) „ True Gray Use for photographic images or graphics. This mode is more exact because it uses up to 256 shades of gray. „ 8 Bit 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 reproduction, the image file size will be about three times larger than a file created using the 8 Bit Color option. It requires the most memory and has the longest transfer time. Scanning Area 9 Choose one of the following sizes: „ A4 210 × 297 mm „ JIS B5 182 × 257 mm „ Letter 8.5 × 11 in. „ Legal 8.5 × 14 in. „ A5 148 × 210 mm „ Executive 7.25 × 10.5 in. „ Business Card To scan business cards, choose the Business Card size (90 × 60 mm), and then put the business card face down at the center of the scanner glass. 115