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4 Color Printing vs. 6 Color Ink Jet Printing Four color "process" printing is the method used in printing art books with color images and in most mass produced prints or posters, like the ones sold in art museum stores.

Comparison of the Adobe RGB (1998)
working space to generic CMYK.

The red-green-blue colored area in the graphic above represents all the possible colors
that exist . Within that colored area is the Adobe RGB color gamut (or profile) compared
to the CMYK color gamut. The Adobe RGB profile is the larger of the two. One can
visually see that there are many colors within the Adobe RGB color gamut that are outside
the CMYK color gamut. The Adobe RGB profile approximates the color
gamut that a good eight color ink jet printer can produce, whereas the CMYK color profile
represents the limitations of a CMYK printer. CMYK printers are used to produce most
color art books and the prints and posters offered for sale in most museum art shops.

Four color "process" printing is the method used in printing art books with color images and in most mass produced prints or posters, like the ones sold in art museum stores.

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