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. 03, 1990
Filed:
Sep. 08, 1988
Masakiyo Okuda, Kashiwara, JP;
Toshihisa Matsuo, Yamatokooriyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In an original document size detecting arrangement, one or more pairs of a light emitting element and a light receiving element are located on both sides of the original document platform so that the detection light emitted from the light emitting element travels to the light receiving element along the top surface of the original document platform spaced therefrom a predetermined value. Since the detection light travels along the surface of the original document platform, when an original document is placed on the platform, the detection light is interrupted by the original document. A detecting element is provided for detecting whether the detection light enters into the light receiving element or whether the detection light is interrupted so that the detecting element can generate a detection signal showing the size of the original document.