This study was conducted to experimentally examine and improve the color
variation as a major quality characteristic in printing on sheet-fed offset press. The
experimental work considered seven main factors and three interactions. The L16
Taguchi experimental orthogonal array was chosen for defining the experimental
treatments as it offered the fitting of the factors and interactions with all necessary
degrees of freedom. The color variation of the four basic colors (Cyan, Magenta,
Yellow and Black) was measured for every treatment. With these four responses for
every treatment, the optimization problem became a multi-criteria one. The technique
performed on observation data is Grey relational analysis results to transform multi
response into a single one and optimum factor settings are defined.