HP Color LaserJet 4550 printer family - Software Technical Reference

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HP Color LaserJet 4550 Software Technical Reference 228
Many designers create color documents using CMYK color rather than RGB color. This allows them to control
colors in the same color space as they will eventually be printed. Because monitors are RGB devices, when an
application displays a CMYK color on the monitor, it has to convert the CMYK values to RGB. There are many
assumptions that must be made when converting colors. Some of these assumptions include:
• the color of the cyan, magenta, yellow, and black colorants
• the color of the red, green and blue phosphors
• how the colors change as they are mixed together
• what the room lighting conditions are
• the white point of the monitor
• the type of media being printed
Because of these assumptions, the same CMYK value can be displayed onscreen as an RGB color differently by
each application. HP Color LaserJet printers use a SWOP ink emulation as their default CMYK color space.
Choosing SWOP as the assumed CMYK space in an application will generally produce the best results for these
color conversions.
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5. HP SOFTWARE AND SUPPORT SERVICES -
ADDITIONAL INFORMATION
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Refer to the printer online user guide for additional methods of obtaining software and support information,
including the latest printer drivers, online services, fax-back service, and online support.
INTERNET
Anonymous FTP library service is available for around-the-clock access to drivers and technical support
information for Hewlett-Packard peripheral and computer products. Note that the paths might change without
notice. Access the Internet or FTP address and use the menus to locate the software or support of your choice.
URL for Software and Support: http://www.hp.com/go/cposupport
URL for Access HP: http://www.hp.com
FTP address: ftp.hp.com
Login: anonymous
Password: your Internet name (or user identification)
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6. LEGAL STATEMENTS
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TRADEMARK NOTICES
Adobe®, Adobe PhotoShop®, and PS® are trademarks of Adobe Systems Incorporated, which can be registered
in certain jurisdictions.
CorelDRAW(TM) is a trademark or of Corel Corporation.
PageMaker® is a U.S. registered trademark of Adobe Systems Incorporated.