Lexmark 436 How is color specified in a document to be printed?, What is manual color correction?

Troubleshooting 300

How is color specified in a document to be printed?

Software programs typically specify the document color using RGB or CMYK color combinations. Additionally, they let users modify the color of each object in a document. For more information, see the help information of your operating system.

How does the printer know what color to print?

When a user prints a document, information describing the type and color of each object is sent to the printer. The color information is passed through color conversion tables that translate the color into the appropriate amounts of cyan, magenta, yellow, and black toner needed to produce the color you want. The object information determines the application of color conversion tables. For example, it is possible to apply one type of color conversion table to text while applying a different color conversion table to photographic images.

What is manual color correction?

When manual color correction is enabled, the printer employs user‑selected color conversion tables to process objects. However, Color Correction must be set to Manual, or no user‑defined color conversion will be implemented. Manual color correction settings are specific to the type of object being printed (text, graphics, or images), and how the color of the object is specified in the software program (RGB or CMYK combinations).

Notes:

•Manual color correction is not useful if the software program does not specify colors with RGB or CMYK combinations. It is also not effective in situations in which the software program or the computer operating system controls the adjustment of colors.

•When Auto Color Correction is selected, the color conversion tables will generate preferred colors used for the majority of the documents.

To manually apply a different color conversion table, do the following:

1From the Quality menu on the printer control panel, select Color Correction, and then select Manual.

2From the Quality menu on the printer control panel, select Manual Color, and then select the appropriate color conversion table for the affected object type.

Object type

RGB Image

RGB Text

RGB Graphics

Color conversion tables

•Vivid—Produces brighter, more saturated colors and may be applied to all incoming color formats.

•sRGB Display—Produces an output that approximates the colors displayed on a computer monitor.

Note: Black toner usage is optimized for printing photographs.

•Display—TrueBlack—Produces an output that approximates the colors displayed on a computer monitor. This uses only black toner to create all levels of neutral gray.

•sRGB Vivid—Provides an increased color saturation for the sRGB Display color correction.

Note: Black toner usage is optimized for printing business graphics.

•Off—No color correction is implemented.