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:
Oct. 28, 2003
Filed:
Sep. 29, 1999
Kazutsugu Ogata, Saitama, JP;
Fuji Photo Optical Co., Ltd., Omiya, JP;
Abstract
In an image reading device, light from a source document is formed in an image by an optical image-forming system including a lens and the formed image is detected by a charged coupled device (CCD) sensor. A reading line of the image read by the optical system and the CCD sensor is scanned in a vertical scanning direction. The charge accumulated in the CCD sensor is read out through a timing circuit and an analog-to-digital converter. Light from an extension of a reading line of a position-reading pattern in or on a position-reading plate is also formed into an image and detected by the CCD sensor, based on which, misregistration of a scanning position in the vertical scanning direction is detected. The image data read out by the CCD sensor is corrected by a correction circuit, based on the misregistration of a scanning position in the vertical scanning direction.