Printer and printing method on the basis of calibration of primary colors mixture

摘要

A printer performs calibration in which a reference primary color ink is mixed with at least one additional primary color ink to approximate a predetermined target primary color. The printer includes an acquisition section, a predicting section, an optimizing section and a printing unit. The acquisition section acquires spectral reflectances of the reference primary color ink printed on a base, the additional primary color ink printed on the base, and the base. The predicting section calculates predicted spectral reflectance of a mixture of the primary color inks by dividing a product of the spectral reflectances of the primary color inks by the spectral reflectance of the base raised to the power obtained by subtracting 1 from a total number of the inks. The optimizing section optimizes an ink-amount set of the mixture so that the predicted spectral reflectance is approximated to spectral reflectance of the target primary color.