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:
Mar. 31, 1989
Isamu Sato, Yokohama, JP;
Yoshihiro Funamizu, Soka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An original detection apparatus includes a placing table for placing an original thereon, an openable/closable pressing member for covering the original placed on the placing table, an original detection unit, arranged below the placing table, for detecting the presence/absence of the original on the placing table, an open/closed detection unit for detecting an open/closed state of the pressing member, and a judging unit for judging whether or not the original is placed on the placing table, on the basis of an output from the original detection unit obtained when the open/closed detection unit detects that the pressing member is in an open state and an output from the original detection unit obtained when the open/closed detection unit detects that the pressing member is in a closed state.