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:
May. 04, 2021
Filed:
Oct. 15, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Satoshi Totsuka, Ibaraki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image reading apparatus includes an original stacking portion, an original feeding portion, an image reading portion, a shading operation portion, and a receiving portion. The shading operation portion acquires a shading correction value by causing the image reading portion to read a white reference member with a predetermined reading resolution when an original is stacked on the original stacking portion. When a resolution change instruction is received before reading of the original is started, depending on the resolution change instruction, the shading operation portion acquires a shading correction value by causing again the image reading portion to read the white reference member with a changed reading resolution.