Also used when using host based color correction. When the application color correction is paramount and the need to ensure the printer s color correction algorithms are not used. To print color images in monochrome grayscale. Monitors display color using the RGB model, whereas printers are based on the CMYK model. Hence there are some colors that are visible on a monitor that cannot be printed and vice versa.
All devices have unique and different color gamuts.
This may or may not coincide with what you believe the data actually represents. For example, text from a Web page may be rendered as image data versus text as it appears. In this mode, if RGB data is received, color correction will be applied. If CMYK data is received, no color correction is applied. Output from CMYK is intended for users doing pre-press work.