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:
Mar. 01, 2011
Filed:
Sep. 13, 2007
Yoshihiko Matsuzawa, Nagano-ken, JP;
Yoshihiko Matsuzawa, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A calibration precision evaluating apparatus includes a calibrator carrying out calibration to adjust an ink amount output characteristic so that a measured color value is approximated to a reference value, a confirmation patch maker printing plural confirmation patches including a background patch and having the known reference values corresponding to the confirmation patches, a color measurer color-measuring the confirmation patches, acquiring initial color measured values, a background color shift amount calculator calculating a first amount of background color shift between the reference values and the initial color measured values with respect to the background patches, a corrector correcting the initial color measured values based on the background color shift amounts, acquiring corrected color measured values, and a precision evaluator carrying out precision evaluation of the calibration based on a second amount of color shift between the corrected color measured values and the reference values with respect to the confirmation patches.