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:
Sep. 09, 1986
Filed:
Apr. 16, 1985
Yuji Takenaka, Kaisei, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
It is necessary to optimally control exposure conditions in printers and development conditions for negative films and photographic paper in order to achieve color printing of high quality. According to the method of this invention, as the luminance voltage of a light source and color compensation filters for respective colors are controlled automatically and the voltage to be applied to the light source can be minimized to avoid a waste of light. Even if there is insufficient light at the light source due to the deterioration of the light source or the fluctuations in a power source voltage, this method enables one increase the amount of light by increasing the voltage to be applied to the light source.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile