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:
Apr. 01, 2003
Filed:
Oct. 30, 1998
Shinichiro Kori, Abiko, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A color copy machine having a reading portion and a printing portion outputs a chart for color correction. A result of reading by the reading portion of the same machine of patch for each output color of the chart, is converted into color component data for a pixel. The color component data are summed for a number of pixels of the patches. Data is derived by dividing the sum by a number of pixels. With this data, content of a production color table used in the binarization process is updated. By this, the image to be printed by the printing portion on a basis of a result of reading of the reading portion, matches with the result of reading. As a result, the color of the original image can be reproduced with high fidelity.