why do printers use cyan magenta and yellow instead of rgb
CMYK color model To reproduce color, the CMYK color model codes for absorbing light rather than emitting it (as is assumed by RGB). The 'K' component absorbs all wavelengths and is therefore achromatic. The Cyan, Magenta, and Yellow components are used for color reproduction and they may be viewed as the inverse of RGB. Cyan absorbs Red, Magenta absorbs Green, and Yellow absorbs Blue (-R,-G,-B).[citation needed]
Yellow journalism The term was coined in the mid-1890s to characterize the sensational journalism that used some yellow ink in the circulation war between Joseph Pulitzer's New York World and William Randolph Hearst's New York Journal. The battle peaked from 1895 to about 1898, and historical usage often refers specifically to this period. Both papers were accused by critics of sensationalizing the news in order to drive up circulation, although the newspapers did serious reporting as well. An English magazine in 1898 noted, "All American journalism is not 'yellow', though all strictly 'up-to-date' yellow journalism is American!"[5]