HP LaserJet 3055 - Manual (Page 169)

Resolution and color guidelines
The following table describes the recommended resolution and color settings for different types of
scan jobs.
Intended use Recommended resolution Recommended color settings
Fax 150 ppi ● Black and White
E-mail 150 ppi ● Black and White, if the image
does not require smooth gradation
● Grayscale, if the image requires
smooth gradation
● Color, if the image is in color
Edit text 300 ppi ● Black and White
Print (graphics or text) 600 ppi for complex graphics, or if you
want to significantly enlarge the
document
300 ppi for normal graphics and text
150 ppi for photos
● Black and White for text and line art
● Grayscale for shaded or colored
graphics and photos
● Color, if the image is in color
Display on screen 75 ppi ● Black and White for text
● Grayscale for graphics and photos
● Color, if the image is in color
Color
You can set the color values to the following settings when scanning.
Setting Recommended use
Color Use this setting for high-quality color photos or documents in
which the color is important.
Black and White Use this setting for text documents.
Grayscale Use this setting when file size is an issue or when you want
a document or photograph to be scanned quickly.
ENWW Scanner resolution and color 151