Brother MFC-9420CN Instrukcja Użytkownika Pobierz pdf (Strona 39)

Scanning

2 - 6

Scan Type

Brightness

Adjust the setting (-50 to 50) to obtain the best image. The default value is 0, representing an ‘average’.

You can set the level by dragging the slide bar to the right or left to lighten or darken the image. You can also

type a value in the box for the setting.

If the scanned image is too light, set a lower brightness value and scan the document again. If the image is

too dark, set a higher brightness value and scan the document again.

Note

The

Brightness

setting is only available when

Black & White

Gray (Error Diffusion)

True Gray

selected.

Contrast

You can increase or decrease the contrast level by moving the slide bar to the left or right. An increase

emphasizes dark and light areas of the image, while a decrease reveals more detail in gray areas. You can

also type a value in the box for the setting.

Note

The

Contrast

setting is only adjustable when you have selected one of the gray scale settings. It is not

available when

Black & White

and

Color

settings are selected as the

Scan Type

When scanning photographs or other images for use in a word processor or other graphics application, you

should try different settings for the contrast and resolution modes to see which best suits your needs.

Black & White:

Set the Scan Type to

Black & White

for text or line art.

Gray Scale:

Set the Scan Type to

Gray (Error Diffusion)

True Gray

for photographic images.

Colors:

Set either:

256 Color

, which scans up to 256 colors, or

24 bit Color

which scans up to 16.8 million

colors.

Although using

24 bit Color

creates an image with the most accurate colors, the image

file will be approximately three times larger than a file created with

256 Color

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