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:
Oct. 20, 2009
Filed:
Apr. 14, 2006
Tatsuji Goma, Wakayama, JP;
Takeshi Nishihara, Wakayama, JP;
Yoshiyuki Nakatani, Wakayama, JP;
Noritsu Koki Co. Ltd., Wakayama-ken, JP;
Abstract
A printing apparatus for generating a test chart using a plurality of sheets of printing paper and correction data having high accuracy according to the test chart. Overlapping regions G are extracted from scanning data Dand Dof two test charts. Tendency in variation (inclination) of the density is obtained for one set of the scanning data in the overlapping regions G and such tendency in variation is reduced. The scanning data Dand Dare then combined together to eliminate the density difference, thereby obtaining a single set of combined scanning data D. A correction data generation means updates a correction table based on density data of the scanning data D