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:
Apr. 17, 1984
Filed:
Aug. 19, 1981
Kiyoto Nagasawa, Yokohama, JP;
Hiroshi Yamada, Ichikawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An exposure value control system for a copying machine of the narrow slit exposure type in which a fluorescent lamp and a fiber lens array are used as a source of light and an imaging optical system, respectively. This exposure value control system comprises a lighting device for the fluorescent lamp, a manually-adjustable D-C voltage generator, and control means for electrically controlling a lamp current supplied from the lighting device to the fluorescent lamp in dependence upon the D-C voltage from the generator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile