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. 12, 2001
Filed:
Nov. 22, 1996
Yoshiyuki Shimamura, Yokohama, JP;
Tetsuya Ishikawa, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image reading apparatus includes reading means for reading out a document arranged in a reading position for its conversion into image signals, a reference member, correction means for correcting the image signals converted by the reading means, carrying means for guiding the document to the image reading position, expelling means for expelling the document from the image reading position, and controlling means for controlling and obtaining the corrected data from the correction means by guiding the reference member by use of the carrying means to the image reading position in order to read by use of the reading means the regions of the reference member not in contact with the expelling means. With this structure, it is possible to prevent the reference member from being stained, and execute the correction of converted image signals accurately for the enhanced implementation of image reading function for this apparatus, and an information processing apparatus provided with such image reading function as well.