8. Scanning
134
Settings in the Scanner window
8
Resolution
8
You can change the scanning resolution from the
Resolution
pop-up menu. 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 colours.
Scan Type
8
Ā
Black & White
Use for text or line art.
Ā
Grey (Error Diffusion)
Use for photographic images or graphics. (Error Diffusion is a method for creating simulated grey images
without using true grey dots. Black dots are put in a specific pattern to give the appearance of grey.)
Ā
True Grey
Use for photographic images or graphics. This mode is more exact because it uses up to 256 shades of
grey.
Ā
8 Bit Color
Uses up to 256 colours to scan the image.
Ā
24 Bit Color
Uses up to 16.8 million colours to scan the image.
Although using
24 Bit Color
creates an image with the most accurate colours, the image file will be about
three times larger than a file created with
8 Bit Color
. It requires the most memory and has the longest
transfer time.
Resolution
Black & White/Grey (Error
Diffusion)
8 bit colour
True Grey / 24 bit colour
100
Ć
100 dpi
Yes
Yes
Yes
150
Ć
150 dpi
Yes
Yes
Yes
200
Ć
200 dpi
Yes
Yes
Yes
300
Ć
300 dpi
Yes
Yes
Yes
400
Ć
400 dpi
Yes
Yes
Yes
600
Ć
600 dpi
Yes
Yes
Yes
1200
Ć
1200 dpi
Yes
No
Yes
2400
Ć
2400 dpi
Yes
No
Yes
4800
Ć
4800 dpi
Yes
No
Yes
9600
Ć
9600 dpi
Yes
No
Yes
19200
Ć
19200 dpi
Yes
No
Yes