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. 07, 2016
Filed:
Dec. 11, 2014
Yasunori Hino, Kanagawa, JP;
Chikara Akata, Kanagawa, JP;
Tomoki Tamate, Kanagawa, JP;
Hideaki Takahashi, Kanagawa, JP;
Munehisa Fuda, Kanagawa, JP;
Toshihiro Okutsu, Kanagawa, JP;
Takashi Fukumoto, Kanagawa, JP;
Yasuo Niikura, Kanagawa, JP;
Masaki Ishizaki, Kanagawa, JP;
Kiyotake Nakamura, Kanagawa, JP;
Hidetoshi Kojima, Kanagawa, JP;
Hisayoshi Sugawara, Kanagawa, JP;
Kazunori Konno, Kanagawa, JP;
Tatsuya Sugawara, Kanagawa, JP;
Kohjiroh Haga, Kanagawa, JP;
Masato Hashimoto, Kanagawa, JP;
Yasunori Hino, Kanagawa, JP;
Chikara Akata, Kanagawa, JP;
Tomoki Tamate, Kanagawa, JP;
Hideaki Takahashi, Kanagawa, JP;
Munehisa Fuda, Kanagawa, JP;
Toshihiro Okutsu, Kanagawa, JP;
Takashi Fukumoto, Kanagawa, JP;
Yasuo Niikura, Kanagawa, JP;
Masaki Ishizaki, Kanagawa, JP;
Kiyotake Nakamura, Kanagawa, JP;
Hidetoshi Kojima, Kanagawa, JP;
Hisayoshi Sugawara, Kanagawa, JP;
Kazunori Konno, Kanagawa, JP;
Tatsuya Sugawara, Kanagawa, JP;
Kohjiroh Haga, Kanagawa, JP;
Masato Hashimoto, Kanagawa, JP;
RICOH COMPANY, LIMITED, Tokyo, JP;
Abstract
A sheet feeding device includes: a sheet stacking member; an air blowing unit configured to blow air onto the sheet bundle placed on the sheet stacking member to suspend multiple sheets of the sheet bundle; a lifting/lowering unit configured to lift/lower the sheet stacking member; an optical reflection sensor configured to detect a suspended sheet suspended by the air blowing unit; and a control unit configured to control the lifting/lowering unit based on an output value of the optical reflection sensor. The optical reflection sensor is configured to be capable of detecting an area corresponding to multiple sheets in a sheet suspension zone extending between a non-suspended sheet bundle and a conveying member configured to convey an uppermost sheet of the multiple suspended sheets. The non-suspended sheet bundle is made up of sheets not suspended during a period when air is blown by the air blowing unit.