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:
Jun. 13, 1989
Filed:
Feb. 26, 1988
Kazuya Okabe, Furukawa, JP;
Yasuhiko Kasama, Izumi, JP;
Hitoshi Seki, Izumi, JP;
Chisato Iwasaki, Furukawa, JP;
Alps Electric Co., Ltd., , JP;
Abstract
In an optical sensor, there is a risk that a short-circuit occurs in a gap between opposite electrodes on a photoconductive body. A pair of band-shaped electrodes each having a width of 'W' are formed on the photoconductive body under the condition that these electrodes are positioned opposite to each other via the gap having an interval of 'L'. A band-shaped first notch portion having a length of 'W/2' and a width of 'L' is formed which is opened to the gap. Furthermore, a second notch portion is formed which is closed other than the portion thereof communicated to the first notch portion. Thus, first and second bridge portions are formed in one electrode where the first and second notch portions have been formed. When the opposite electrodes are shortcircuited, one of these bridge portions is cut out so that the tip portion of the cut electrode functions as another electrode.