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:
Dec. 30, 2003
Filed:
Apr. 10, 2000
Takefusa Ogata, Fukuoka, JP;
Eiji Kitsutaka, Fukuoka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The invention provides an image reading apparatus structured such that two or more line image sensors are arranged in a main scanning direction, in which it is possible to securely restrict a position shift of an image reading area caused by a line image sensor, thereby performing an image reading operation at a high quality. In the image reading apparatus in which the line image sensors are arranged, a marker is formed as an image in an overlapping portion of the line image sensors, the marker is read by the line image sensors themselves so as to inspect a relative position between the line image sensors and the marker with reference to a magnitude of an output thereof corresponding to a judging standard, and the positions of the line image sensors are shifted on the basis of the result, thereby preventing a position shift in a sub scanning direction from being generated.