A-61159 May 2002
7-3
Color Image Quality
Color image quality is highly subjective because people perceive color
images differently. Here are some things to consider when scanning
in color:
• The differing color outputs of scanners, printers, and monitors can
affect the perception of the scanned document.
• Computer monitor displays and printer output can vary from
model to model, and from manufacturer to manufacturer. An image
may be acceptable on one monitor and unacceptable on another.
• Area lighting (fluorescent, natural, incandescent) can affect
color perception.
• The appearance of a colored area within an image can be perceived
differently, based on what surrounds it.
• The characteristics and condition of a document can have an impact
on color consistency.
• Color requirements may differ between environments (e.g., in a
business document environment, images are generally viewed on a
monitor, whereas in a “print on demand” environment, scanned
images are printed).
To ensure that your scanner is delivering the best image:
• Clean the scanner. Contamination within the scanner
degrades image quality. (Refer to Chapter 5, Maintenance,
for cleaning information.)
• Calibrate the scanner at least once per week.
• Make sure that the calibration target is clean and unwrinkled.
• Change the color table. Individual results may vary.
The default color table provides robust image quality for a wide
range of input and applications. However, additional specialized color
tables are available from within the Diagnostic Software (for TWAIN
only) for varying document types and applications needs, such as
photographs, text for OCR, and so forth.
NOTES: Calibrate the scanner before you change the color table.
Color scanning is available only on the Color Scanner 3590C
and Color Scanner 4500.
