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:
Jun. 23, 2015
Filed:
Nov. 21, 2014
Fuji Xerox Co., Ltd., Tokyo, JP;
Kenji Hyoki, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
Provided is an image reading apparatus, including an update unit that updates a color correction coefficient of an image read signal of an image read by a reading unit using a color reference surface provided with an achromatic color reference surface and a chromatic color reference surface, a first detection unit that detects existence of dust based on read information of the achromatic color reference surface, a second detection unit that detects existence of the dust based on the read information of the chromatic color reference surface, and a third detection unit that detects a type of an optical component onto which the dust is attached according to a detection result of the first detection unit and the second detection unit.