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, 1990
Filed:
May. 19, 1988
Haruo Nishiyama, Kyoto, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A copying apparatus, a printer or the like is internally provided with a state detecting arrangement for detecting a light emitting state or the brightness of a plurality of locations in the apparatus. The state detecting arrangement includes a plurality of optical fibers having respective ends positioned at a plurality of locations to be detected so that standard levels of light to be received at the other ends of the optical fibers may be different from one another. The arrangement further includes at least one light receiving element for simultaneously receiving light emitted from the other ends of the optical fibers and at least one circuit for judging the state of each location on the basis of a detection level of the light receiving element.