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:
Dec. 30, 2014
Filed:
Apr. 11, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Naoki Uchida, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a printing apparatus comprising a storage unit storing first information about a conveyance fluctuation amount of sheet conveyance by a roller that depends on a rotational phase of the roller, and second information about a conveyance deviation amount of sheet conveyance by the roller that is independent of the rotational phase of the roller. The first and second information are used for controlling the rotation of the roller when printing an image. The second information is determined based on an actual conveyance fluctuation amount acquired by reading test patterns printed by the printing apparatus. The first information is stored previously in the storage unit.