OKI C8800n User Manual

							
C8800 User’s Guide191
Basics
There are three methods by whic h your document’s color can 
be managed and adjusted:     
1. Application Color Management 
Some graphics and desktop publishing programs such as 
Adobe Photoshop, Adobe Illustrator, and Quark Xpress 
have their own built-in color management systems. 
Most applications do not have these color management 
features and rely instead on the printer or operating 
system.
2. Operating System Color Management 
Windows 98, Me, 2000 and XP have Windows ICM color 
Management.
Mac OS and Mac OS X have Apple ColorSync.
3. Printer Color Management
When you print your document  and modify settings in the 
printer driver, the printer performs color adjustments.
Important!   Only use one color management system if you 
want the best results from your printer.
If you wish to use your prin ter’s color management system, 
ensure that your applicatio n or operating system color 
management is switched off.
Applying color management in multiple places will give 
unpredictable results.
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C8800 User’s Guide192
What this guide describes
This user guide only discusses the printer color management 
system.     
If you wish to learn more about your application program or 
operating system color management, please see the 
documentation that was supplied with your application 
software or computer.
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C8800 User’s Guide193
Color Matching ____________________
Background Information
NOTE:  Most applications allow th e printer properties to be 
accessed from within the document print dialog box.
Application settings ov erride driver settings.
Driver settings override printer menu settings.  
Color reproduction is a complex topic.
This background information expl ains the factors that affect 
color matching.
Background information is divided into these sections:
1. Factors that Affect Color Printing:  see page 194   
2. Choosing a Color Matching Method:  see page 200   
3. Printing Vivid Colors:  see page 204   
4. Color Settings:  see page 205   
5. Hue, Brightness, and Saturation:  see page 207   
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C8800 User’s Guide194
Factors that Affect Color Printing
There are many factors that affect color printing. 
Some of the most important factors are:
•the differences between the range of colors a monitor 
can reproduce versus the rang e of colors that a printer 
can reproduce.  See page 195.
• monitor settings.  See page 196.
• color settings in your software application.  See 
page 197 .
• how your software application displays color.  See 
page 197 .
• color settings in your printer driver.  See page 198.
• viewing (lighting) conditions.  See page 199.
• paper type.  See page 199 .
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C8800 User’s Guide195
Factors that Affect Color Printing
Monitor Colors vs. Printer Colors
Differences between the range of colors a monitor or printer can reproduce
Neither a printer nor a monitor ca n reproduce the full range of 
colors seen by the human eye. 
Each device is limited to a certain range of colors. 
•A printer cannot reproduce all of the colors displayed 
on a monitor.
• A monitor cannot reproduce all of the colors printed by 
a printer.
Both devices use very different technologies to represent 
color.
•A monitor uses Red, Green and Blue (RGB) phosphors 
(or LCDs).
• A printer uses Cyan, Yellow, Magenta and Black 
(CMYK) toner or ink.                
Very vivid colors (such as intense reds and blues) can be 
displayed on a monitor. These sa me colors cannot be easily 
produced on  any printer using toner or ink.
There are certain colors (for example, some yellows), that can 
be printed, but cannot be disp layed accurately on a monitor. 
These differences between monitor colors and printer colors 
are the main reasons why printed colors do not always match 
the colors displayed on screen. 
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C8800 User’s Guide196
Factors that Affect Color Printing
Monitor Settings
The brightness and contrast controls on your monitor can 
change how your document looks on-screen. 
Your monitor color temperature al so influences how warm or 
cool the colors look. 
NOTE:   Several of the Color Matching options make reference 
to your monitor’s Color Temperature. 
Many monitors allow you to adjust the color temperature 
through their control panels.
  
There are several settings  found on a typical monitor:
5000k * or D50                        
Warmest; yellowish lighting.
Typically used in grap hics arts environments.
6500k * or D65                              
 Cooler
Approximates daylight conditions.
9300k  *             
Cool
The default setting for many monitors and television sets.
*k = degrees Kelvin, a measurement of temperature
Macintosh OS 10.1, 10.2, and 10.3 You can calibrate your monitor’s color regimen in System 
Preferences  → Displays  →  Color. 
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C8800 User’s Guide197
Factors that Affect Color Printing
Software Settings
Many software applications have their own color settings.
The application settings may override the settings in the 
printer driver. 
Please refer to the documentation for your software application 
for details on how that particular program’s color management 
functions.
How the application displays color
Some graphics applicatio ns such as CorelDRAW®, Adobe® 
Photoshop®, or Macromedia Freehand® may display color 
differently from office applications such as Microsoft® Word. 
For more information, please see your application’s online help 
or user manual. 
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C8800 User’s Guide198
Factors that Affect Color Printing
Printer Driver Settings
The color settings in your pr inter driver can change the 
appearance of a document. 
There are several options available to help match the 
printed colors with those displayed on screen. 
See “How To” on page 208 .
For Windows
The printer drivers supplied with your printer provide 
several controls for changing the color output. 
The default driver settings produce good results for most 
documents.
For Macintosh 
The install utility provides
• a color matching profile for your printer
and
• a Color Option utility in the print driver. 
The  Auto  settings produce good results for most 
documents.
See “Automatic” on page 211 .
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C8800 User’s Guide199
Factors that Affect Color Printing
Lighting (Viewing) Conditions
A document can look very di fferent under various lighting 
conditions. 
For example, the colors may look different when viewed 
standing next to a sunlit window compared to how they 
look under standard offi ce fluorescent lighting.
Paper Type 
The type of paper used can also significantly affect the 
printed color. 
For example, a printout on recycled paper can look duller 
than one on specially formulated glossy paper.   
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C8800 User’s Guide200
Choosing a Color Ma tching Method  
General Information
NOTE:  These suggestions are for guidance only. 
Your results may vary depending on the application from which 
you are printing. 
Some applications override, without warning, any color 
matching settings in the printer driver.   
There is no one way to achi eve a good match between the 
document displayed on your  monitor, and its printed 
equivalent. 
There are many factors involved  in achieving accurate and 
reproducible color.
However, the following guidelines may help in achieving good 
color output from your printer.
There are several suggested meth ods. The method you choose 
is determined by the type of  document you are printing.
• most common [RGB].  See page 201.
• professional desktop publishing and graphics [CMYK].  
See page 201 .
• photographic images.   See page 202.
• specific colors (i.e., a company logo).   See page 203.
• printing vivid colors.   See page 204.
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