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:
Nov. 13, 2012
Filed:
Sep. 08, 2009
Nobuo Sekiguchi, Moriya, JP;
Shigemichi Hamano, Abiko, JP;
Kenji Morita, Toride, JP;
Akiko Kanno, Kashiwa, JP;
Satoshi Seki, Toride, JP;
Nobuo Sekiguchi, Moriya, JP;
Shigemichi Hamano, Abiko, JP;
Kenji Morita, Toride, JP;
Akiko Kanno, Kashiwa, JP;
Satoshi Seki, Toride, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image reading apparatus that, in a case where the light amount of light illuminated from an image reading lamp has decreased, maintains the quality of a read image without decreasing productivity, and a method for controlling that image reading apparatus, are provided. To accomplish this, this image reading apparatus is provided with RGB line sensors that read a color image, and a monochrome line sensor that reads a monochrome image and has a faster horizontal transfer speed than the RGB line sensors. Further, this image reading apparatus reads a monochrome image using the RGB line sensors even in a monochrome mode in a case where the light amount of the lamp for illuminating an original decreases and so an output level for reading an image with good quality cannot be obtained from the monochrome line sensor.