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Color corrections - making the best selection
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TekColor corrections
The printer's TekColor color correction options provide simulations of different color devices. Follow these basic guidelines so that the printer accurately reproduces the colors you want on your prints.
Color corrections can be selected from printer drivers, set in the printer with downloadable utility files, or set from the printer's front panel.
TekColor color corrections are performed in the printer. To use ColorSync color matching on a Macintosh, or to use host color correction in Windows 95, refer to the topics on the printer's CD-ROM or the Tektronix World Wide Web site.
Note: TekColor color corrections do not affect colors specified in the
PostScript Level 2 international color standard CIE XYZ
developed by the Commission Internationale de l'Eclairage
(International Commission on Illumination).
Color printers and computer display screens produce color differently. Printers use the subtractive primaries CMYK (cyan, magenta, yellow, and black), and produce color when light is reflected off the paper. Computers use the additive primaries RGB (red, green, blue) with a light-emitting CRT screen. The printer and the computer screen each have a different range of possible colors they can produce, with some overlap between them.
Software application packages specify color in different ways, for example as CMYK or RGB, or they may give you a choice. Get to know your applications so you can work more efficiently.
The TekColor color correction options are available for a finer degree of control over color. Since no single color correction option can address all uses, refer to the following table for the description that best fits your printing situation, and try the suggested color correction.
Color correction solutions
Turning off all color corrections
If you do not want to use any TekColor color corrections, you can specify None from a supported driver, with utility files, or from the printer's front panel. Select None when you are doing the following:
General all-purpose printing
The Automatic option is the best choice for typical office printing. This option automatically adjusts the color correction used for each page, according to which elements (for example images, graphics) are included on that page.
The Vivid Color option makes printed blue appear less purple by reducing the amount of magenta used to print blue colors. Other colors in the cyan-blue-purple- magenta range in the image are also adjusted to compensate for the adjusted blue. Colors in the red-orange-yellow-green range are not affected. This selection is good for making presentation graphics, such as overhead transparencies, and for bright-looking colors that don't need to match the screen's colors or printing press colors.
Vivid Color adjusts CMYK colors using a method that adds black to other components. This option prints more saturated (darker) colors and may be useful for printing overhead transparencies for presentations from some applications, such as CorelDRAW!. Use this option if you have specified a color in the CMYK system, and the color has a black component, and the color appears lighter than you expected when printed.
The Simulate Display option makes printed colors approximate the colors on a standard display screen. This selection should improve the screen-to-printer color accuracy for most applications that don't perform their own color corrections. This selection is best for applications that define colors as RGB (red, green, blue), HLS (hue, lightness, saturation), or HSB (hue, saturation, brightness).
There are three printing press color correction options. Each press option conforms to a different printing standard. Use a press option if you are previewing work for a four-color job to be printed on a printing press. These options simulate a four-color commercial printing press, not solid spot colors, such as PANTONE PMS Colors.
Note: If you are selectingprinter-specific PANTONE Colors in your
application, use the None option; see Turning off all color
corrections. Also, use the None option with other color
management systems, such as EfiColor.
Printing press color corrections
The Use Printer Setting option is available only in the supported drivers. This option sends no color correction information to the printer. It uses the current default in the printer to process colors for printing. The factory default color correction is Automatic. The printer's default can be one of the following:
Using simple color conversions
The following utility files use Adobe's standard color conversions to tell the printer to pipe colors through as fast as possible:
Special considerations
If your Phaser 560 printer is shared on a network
Another user may use the downloadable color correction utility files, or the printer's front panel, to change the printer's default color correction setting. If this situation occurs, the prints you make through a non-supported driver may not print as expected. Refer to Sharing the printer on a network for details on how the color corrections interact with the driver settings for either supported or non-supported drivers.
Some applications perform color corrections to improve screen-to-printer color matching. The TekColor color correction options in the supported drivers adjust colors in the printer after the application has performed its color corrections.
If you are using an unsupported driver
To use the color corrections with an unsupported driver that does not use PPDs, use the downloadable utility files or the printer's front panel.
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