Black Printer UCR And UCA

Theoretical considerations on the black printer by using a linear model consisting of Demichel relations and Neugebauer equations instead of a color density model are discussed. Other topics of the unpublished paper include additivity failure, and variations of UCR and UCA for different dot designs in recent non-impact printing technologies. Four steps of color information handling for better color reproduction are summarized as an example of linear theory in color reproduction. They are: tone compression, calculation of three color dot areas, the black printer, and adjustment for effective areas.