6-color
From ColorWiki
A press, press run or printer that applies 6 colors to the paper. This is commonly the 4 process colors (CMYK) and 2 additional spot colors. 6 color printing can also refer to one of several Hi-Fidelity printing methods in which 2 additional process colors are added to a modified set of CMYK inks. The gamut for this output can be considerably larger.
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