The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2002
Filed:
Mar. 28, 2000
Ryobi Ltd., Hiroshima-Ken, JP;
Abstract
Solid-patches and each printed with color-inks of cyan, magenta, yellow, and a gray patch included in a color bar are printed on a printed-matter A measuring and calculation device measures actual ink densities at each of the solid-patches and gray patches in the color bars and obtains differential values between the actual ink densities and target ink densities at the gray patch Then, both the amount of the primary-color-component and that of the color-impurity-component at the solid patches and are respectively substituted into equations at every detection of the differential values and that of the gray patches. In this way, ink supply volume is adjusted as a result of converting the differential values into primary-color-component differential amount in each of the color-inks.