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How does the printer know what color to print?
When a user prints a document, information describing the type and color of each object is sent to the printer.
The color information is passed through color conversion tables that translate the color into the appropriate
amounts of cyan, magenta, yellow, and black toner needed to produce the desired color. The object
information determines the application of color conversion tables. For example, it is possible to apply one
type of color conversion table to text while applying a dierent color conversion table to photographic images.
Why doesn't the printed color match the color I see on the computer screen?
The color conversion tables used in Auto Color Correction mode generally approximate the colors of a
standard computer monitor. However, because of technology dierences that exist between printers and
monitors, there are many colors that can also be aected by monitor variations and lighting conditions. For
recommendations on how the printer color sample pages may be useful in solving certain color‑matching
problems, see the question, “How can I match a particular color (such as a corporate logo)?”
The printed page appears tinted. Can I adjust the color?
Sometimes a printed page may appear tinted (for example, everything printed seems to be too red). This can
be caused by environmental conditions, paper type, lighting conditions, or user preference. In these
instances, adjust the Color Balance setting to create a more preferable color. Color Balance provides the
user with the ability to make subtle adjustments to the amount of toner being used in each color plane.
Selecting positive or negative values for cyan, magenta, yellow, and black (from the Color Balance menu) will
slightly increase or decrease the amount of toner used for the chosen color. For example, if a printed page
has a red tint, then decreasing both magenta and yellow could potentially improve the color balance.
My color transparencies seem dark when they are projected. Is there anything I can do to improve the color?
This problem most commonly occurs when projecting transparencies with reflective overhead projectors. To
obtain the highest projected color quality, transmissive overhead projectors are recommended. If a reflective
projector must be used, then adjusting the Toner Darkness setting to 1, 2, or 3 will lighten the transparency.
Make sure to print on the recommended type of color transparencies.
What is manual color correction?
When manual color correction is enabled, the printer employs user‑selected color conversion tables to
process objects. However, Color Correction must be set to Manual, or no user‑defined color conversion will
be implemented. Manual color correction settings are specific to the type of object being printed (text,
graphics, or images), and how the color of the object is specified in the software program (RGB or CMYK
combinations).
Notes:
• Manual color correction is not useful if the software program does not specify colors with RGB or
CMYK combinations. It is also not eective in situations in which the software program or the
computer operating system controls the adjustment of colors.
• The color conversion tables—applied to each object when Color Correction is set to Auto—generate
preferred colors for the majority of documents.
To manually apply a dierent color conversion table:
1 From the Quality menu, select Color Correction, and then select Manual.
2 From the Quality menu, select Manual Color, and then select the appropriate color conversion table for
the aected object type.
Troubleshooting 330
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