Patent ID: 6389968
Filing Date: 2002-05-21
Classification: B41F,B41P,G01J

Abstract:
An ink supply control device for independently adjusting supply amount of a plurality of basic-color-inks, each of the basic-color-inks including a primary-color-component and a color-impurity-component which is identical with a primary-color-component of other basic-color-ink, the control device comprising:a target color component amount storing portion for respectively storing a total amount of each color component at a target printed zone as a target color component total amount, the target printed zone being a zone where the basic-color-inks being incorporated are printed under an optimum ratio, an actual color component amount measuring portion for respectively detecting a total amount of each color component as an actual color component total amount as a result of measuring an actual printed zone where the basic-color-inks being incorporated are printed; an independent color component amount measuring portion for detecting both amounts of primary-color-component and that of color-impurity-component contained in the basic-color-ink at each of independent printed zones where the basic-color-inks are independently printed by respectively measuring the independent printed zones; and a color component amount difference calculating portion for calculating a total differential amount of color components between the target color component total amount and the actual color component total amount; wherein the independent color component amount measuring portion detects both an amount of the primary-color-component and that of the color-impurity-component contained in the basic-color-ink at each of the independent printed zones when the actual color component amount measuring portion detects an actual color component total amount; and wherein ink supply amounts of each of the basic-color-inks are respectively adjusted in accordance with the total differential amount of color components, the amounts of primary-color-components and that of color-impurity-components contained.