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:
May. 02, 1978
Filed:
Jul. 20, 1976
Katsumi Masaki, Kodaira, JA;
Takeshi Goshima, Tokyo, JA;
Canon Kabushiki Kaisha, Tokyo, JA;
Abstract
An apparatus for obtaining an information-carrying light comprises a modulated beam generator emitting a beam having an intensity variable in accordance with a modulating signal applied thereto, a data sheet or original bearing thereon the data to be illuminated by the beam from the modulated beam generator, a photoelectric converter means for receiving a secondary light resulting from the data on the data sheet being illuminated by the beam emitted from the modulated beam generator, and a modulating signal generator for generating the modulating signal applied to the modulated beam generator in order that the quantity of light received by the photoelectric converter means may be substantially constant.