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. 25, 2008
Filed:
Nov. 19, 2003
Hiroshi Oyama, Tokyo, JP;
Tadashi Matsudaira, Tokyo, JP;
Katsunori Takahashi, Tokyo, JP;
Masayuki Watanabe, Tokyo, JP;
Shinpei Kawasaki, Tokyo, JP;
Hiroshi Oyama, Tokyo, JP;
Tadashi Matsudaira, Tokyo, JP;
Katsunori Takahashi, Tokyo, JP;
Masayuki Watanabe, Tokyo, JP;
Shinpei Kawasaki, Tokyo, JP;
Konica Minolta Holdings, Inc., Tokyo, JP;
Abstract
In order to shorten a time for preliminary original reading which is performed prior to reading of an original image, an image reading apparatus of the present invention scans an original mounted on a platen glass by a scan optical system that moves to the original and reads a scanned image of the original by using a CCD sensor, the apparatus having a function to perform a preliminary original read operation for automatically deciding a density of the original before the reading operation of the original image, wherein the preliminary original reading is performed while the scan optical system in an idling state is moving from a read standby position to an image read operation start position; a white background level correction operation of the CDD sensor is performed after collection of original density data by the preliminary original read operation; and a result of the correction is reflected on the original density data obtained by the preliminary original reading to control the decision of the original density.