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. 13, 1999
Filed:
Aug. 11, 1997
Shinichi Azumi, Yamatotakada, JP;
Kouji Yamaji, Kyoto, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A detecting device includes: an actuator with its end placed in a conveying path of a moving object such as a sheet etc., pivotally supported by a rotary shaft so that it can sway as the moving object passes by; a slit arm integrally formed with the actuator and having a slit therein and an optical sensor disposed below the actuator. In this arrangement, the slit arm having a slit therein is placed in the path of the optical sensor. An urging portion for returning the actuator to the standby position is provided for the slit arm. The abutment surface P of the urging portion abutting the unit base of the optical sensor is formed inclined. A component force E causing the actuator to bounce, which is proportional to a repulsive force D normal to the abutment surface P when the abutment surface abuts the unit base abutment surface P, is smaller than the repulsive force D. Therefore, the distance of the bouncing of the actuator becomes smaller, thus preventing chattering.