CMYK color model

CMYK has also become a printing color model, that is used to produce printed matter.

Theoretically speaking, only need to cmy these three kinds of ink can, but cmy three ink mixing actual result is a "gray" black.

And black ink is relatively cheap, so black ink is used to replace the equivalent of cyan, magenta, yellow ink. This is why the four-color Overprinter process uses the CMYK model reason.

All CMYK colors are included in RGB, but CMYK has fewer colors than RGB. When you use the RGB model area for printing images, some colors can also be printed.

That is, displayed on the computer, usually in RGB mode.

If the image needs to be printed or printed, it needs to be adapted to CMYK mode, and the "gamut warning" stick ensures that the print color is the same as the design.

In the printing of images, it is generally necessary to CMYK these four channels of the image into film, then on the printing press to overprint.

A white paper printing machine to be overprinter 4 times, first printed like the cyan part, its defective red, yellow, black.

CMYK color model