Lexmark 935dtn - C Color Laser Printer Manuale di risoluzione dei problemi - Pagina 8
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These are possible solutions. Try one or more of the following:
C
P
T
HECK THE
APER
YPE SETTING
Make sure the Paper Type setting matches the paper loaded in
the tray.
C
P
T
HECK THE
APER
EXTURE SETTING
Make sure the Paper Texture setting matches the paper loaded
in the tray.
Toner specks
These are possible solutions. Try one or more of the following:
A
TONER CARTRIDGE MAY BE DEFECTIVE
Replace the toner cartridge.
I
S THERE TONER IN THE PAPER PATH
Contact Customer Support.
Transparency print quality is poor
C
HECK THE TRANSPARENCIES
Use only transparencies recommended by the printer
manufacturer.
C
P
T
HECK THE
APER
YPE SETTING
Load transparencies, and make sure the Paper Type setting is
set to Transparency.
Uneven print density
Replace the photoconductor(s).
Note: The printer has four photoconductors: cyan, magenta,
yellow, and black. The cyan, magenta, and yellow
photoconductors must all be replaced at the same time. The black
photoconductor can be replaced separately.
Solving color quality problems
This section helps answer some basic color-related questions and
describes how some of the features provided in the Quality Menu
can be used to solve typical color problems.
FAQ about color printing
What is RGB color?
Red, green, and blue light can be added together in various
amounts to produce a large range of colors observed in nature.
?
For example, red and green can be combined to create yellow.
Televisions and computer monitors create colors in this manner.
RGB color is a method of describing colors by indicating the
amount of red, green, or blue needed to produce a certain color.
What is CMYK color?
Cyan, magenta, yellow, and black inks or toners can be printed
in various amounts to produce a large range of colors observed
in nature. For example, cyan and yellow can be combined to
create green. Printing presses, inkjet printers, and color laser
printers create colors in this manner. CMYK color is a method of
describing colors by indicating the amount of cyan, magenta,
yellow, and black needed to reproduce a particular color.
How is color specified in a document to be printed?
Software programs typically specify document color using RGB
or CMYK color combinations. Additionally, they allow users to
8
modify the color of each object in a document. For more
information, see the software program Help topics.
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 different color conversion table to photographic
images.
Should I use PostScript or PCL emulation printer software?
What settings should I use for the best color?
The PostScript driver is strongly recommended for best color
quality. The default settings in the PostScript driver provide the
preferred color quality for the majority of printouts.
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 differences that exist
between printers and monitors, there are many colors that can
also be affected 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.