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:
Jul. 19, 2005
Filed:
Sep. 12, 2001
Shuichi Kumada, Kanagawa, JP;
Yasushi Nakajima, Kanagawa, JP;
Kenichi Naito, Tokyo, JP;
Hayato Kubo, Tokyo, JP;
Shuichi Kumada, Kanagawa, JP;
Yasushi Nakajima, Kanagawa, JP;
Kenichi Naito, Tokyo, JP;
Hayato Kubo, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Upon reading an A3-size sample image, a colorimeter that can read A3 size can be used but such A3-size calorimeter is expensive. For this reason, an A3-size recording paper sheet is cut into halves, i.e., two A4-size sample images, which are measured by an A4-size calorimeter. To prevent such troublesome operation, color patches are divided into nearly half groups, and these color patch groups are printed on an A3-size recording paper sheet to have their top positions on the opposite sides. In this way, after one color patch group is measured, the sample image is rotated through 180° and is set on the calorimeter to measure the other color patch group.