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:
Sep. 06, 2011
Filed:
Jan. 20, 2009
Masatsugu Ohishi, Nishinomiya, JP;
Masaharu Kimura, Daito, JP;
Norichika Katsura, Tenri, JP;
Masaya Asakawa, Yamatokoriyama, JP;
Yasuaki Fukada, Nara, JP;
Masatsugu Ohishi, Nishinomiya, JP;
Masaharu Kimura, Daito, JP;
Norichika Katsura, Tenri, JP;
Masaya Asakawa, Yamatokoriyama, JP;
Yasuaki Fukada, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A sheet feeding apparatus includes first and second sheet sensors provided in order from upstream to downstream sides in feeding direction on a paper feed path, sheet conveyor roller sets arranged along the path, and a roller controller individually controlling groups of rollers on the upstream and downstream sides of the first sheet sensor, in response to a change in values of output signals from first and second sheet sensors. The roller controller includes an overlapped feeding determining device outputting a determination signal assuming a first value when overlapped feeding occurs and a second value otherwise, in response to the change in values of the output signals from the sensors, an overlapped feeding eliminating device eliminating overlapped feeding by controlling the roller controller upon receiving the determination signal of the first value, and a conveyor roller stopping device stopping the sheet conveyor rollers if the overlapped feeding eliminating process should fail.