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. 23, 2018
Filed:
Aug. 08, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Hidenori Sunada, Abiko, JP;
Asahiro Nakayoshi, Matsudo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image reading apparatus reads an original image of an original placed on an original tray by a scanner unit. The original is conveyed to a reading position used by the scanner unit from the original tray through a conveyance path. A registration roller pair configured to mechanically correct skew of the original at a time of conveyance of the original is provided on the conveyance path. The image reading apparatus calculates a skew amount at the time of the conveyance of the original based on the original image, and conducts image processing on the original image based on the skew amount, to thereby correct a tilt of the original image. The image reading apparatus stops the conveyance of the original when the absolute value of the skew amount is larger than a first threshold value.