Brother MFC-640CW - Manual (Page 121)

Scanning
115
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.