Lexmark C780, C782 manual Cmyk

Troubleshooting

How can I match a particular color (such as a color in a corporate logo)?

Occasionally, users have a need for the printed color of a particular object to closely match a specific color. A typical example of this is when a user is trying to match the color of a corporate logo. While instances can occur in which the printer cannot exactly reproduce the desired color, users should be able to identify adequate color matches for the majority of cases. The Color Samples menu item can provide useful information in helping to solve this particular type of color- matching problem.

The nine Color Samples values correspond to color conversion tables in the printer. Selecting any of the Color Samples values generates a multiple-page printout consisting of hundreds of colored boxes. Either a CMYK or RGB combination is located on each box, depending on the table selected. The observed color of each box is obtained by passing the CMYK or RGB combination labeled on the box through the selected color conversion table.

The user can examine the color samples pages and identify the box whose color is the closest to the desired color. If the user finds a box whose color is close to the desired color match, but the user would like to scan the colors in that area in more detail, then the user can access the Detailed Color Samples by using the printer Embedded Web Server interface, which is only available on network models.

The color combination labeled on the box can then be used for modifying the color of the object in a software application. The software application Help section provides instructions for modifying the color of an object. Manual Color Correction may be necessary to utilize the selected color conversion table for the particular object.

Which Color Samples pages to use for a particular color-matching problem depends on the Color Correction setting being used (Auto, Off, or Manual), the type of object being printed (text, graphics, or images), and how the color of the object is specified in the software application (RGB or CMYK combinations). When the printer Color Correction setting is set to Off, the color is based on the print job information; no color conversion is implemented. The following table identifies which Color Samples pages to use.

Color specification of	Classification of	Printer Color	Color Samples pages to print
object being printed	object being printed	Correction setting	and use for color matching
RGB	Text	Auto	sRGB Vivid
		Manual	Manual Color RGB Text Setting
	Graphic	Auto	sRGB Vivid
		Manual	Manual Color RGB Graphics Setting
	Image	Auto	sRGB Display
		Manual	Manual Color RGB Image Setting
CMYK	Text	Auto	US CMYK or EURO CMYK
		Manual	Manual Color CMYK Text Setting
	Graphic	Auto	US CMYK
		Manual	Manual Color CMYK Graphics Setting
	Image	Auto	US CMYK
		Manual	Manual Color CMYK Image Setting

Note: The Color Samples pages are not useful if the software application does not specify colors with RGB or CMYK combinations. Additionally, certain situations exist where the software application or the computer operating system adjusts the RGB or CMYK combinations specified in the application through color management. The resulting printed color may not be an exact match of the Color Samples pages.

Solving color quality problems

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