HP Color LaserJet 5550 HP Color LaserJet 5550 series - User Guide - Page 142
Matching colors, PANTONE®* color matching, Sample book color matching
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Matching colors The process of matching printer output color to your computer screen is quite complex because printers and computer monitors use different methods of producing color. Monitors display colors by light pixels using an RGB (red, green, blue) color process, but printers print colors using a CMYK (cyan, magenta, yellow, and black) process. Several factors can influence your ability to match printed colors to those on your monitor. These factors include: ● print media ● printer colorants (inks or toners for example) ● printing process (inkjet, press, or laser technology for example) ● overhead lighting ● personal differences in perception of color ● software applications ● printer drivers ● computer operating system ● monitors ● video cards and drivers ● operating environment (humidity for example) Keep the above factors in mind when colors on your screen do not perfectly match your printed colors. For most users, the best method for matching colors on your screen to your printer is to print sRGB colors. PANTONE®* color matching PANTONE®* has multiple color matching systems. PANTONE®* Matching System is very popular and uses solid inks to generate a wide range of color hues and tints. See http://www.hp.com/support/clj5550_software for details on how to use PANTONE®* Matching System with this printer. Sample book color matching The process for matching printer output to preprinted sample books and standard color references is complex. In general, you can obtain a reasonably good match to a sample book if the inks used to create the sample book are cyan, magenta, yellow, and black. These are usually referred to as process color sample books. Some sample books are created from spot colors. Spot colors are specially created colorants. Many of these spot colors are outside of the gamut of the printer. Most spot color sample books have companion process sample books that provide CMYK approximations to the spot color. Most process sample books will have a note on what process standards were used to print the sample book. In most cases they will be SWOP, EURO, or DIC. To get optimal color matching to the process sample book, select the corresponding ink emulation from the printer menu. If you cannot identify the process standard, use SWOP ink emulation. 128 Chapter 6 Color ENWW