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:
Jul. 14, 1998
Filed:
Jun. 14, 1996
Masahiro Mochizuki, Kanagawa-ken, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A color image reading apparatus improves the reproducibility of colors at the black level end of the brightness scale of each of component color images of an original medium. The color image reading apparatus includes an illuminating unit that illuminates the original medium such as a film original, an imaging device that forms images of the original medium based on three component colors of red, green and blue and outputs a red color signal, a green color signal and a blue color signal, a gain controlled amplifying device that amplifies each of the component color signals output from the imaging device and a gain setting device that sets a common, adjustable gain for each of the component color signals using the single amplifying device.