User Manual

TWAIN Help14
©
To conserve computer memory and still receive good image quality, we
recommend the following settings.
Document to be scanned
Resolution (dpi)
Text (for printing)
300
Text (for faxing)
200
Text (for OCR)
300
Black and white or gray image
150
Color image or photo
100
·
These values are only recommendations and should be raised if the
resulting image is rough or you need to view fine details
.
·
To scan
a large-size
color image with a higher resolution (usually over
600 dpi) increases scan time and file size substantially and requires
huge system resources. Therefore, a higher resolution for color
scanning is recommended only when you scan a small area.
2.2.1.9
Brightness
Raising the brightness increases the amount of white in an image, making it
appear more washed out. Lowering the brightness may help you read light or faint
text.
You may adjust the brightness either way:
·
Slide the thumb of
the scroll bar to the right or left, which adds lightness or
darkness to all colors in your image.
·
Click the arrow signs on the right and left ends.
2.2.1.10
Contrast