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:
Oct. 06, 2009
Filed:
Jul. 24, 2007
Tadasu Taniguchi, Uda, JP;
Norichika Katsura, Tenri, JP;
Masahiko Fujita, Nara, JP;
Yasunobu Ohkawa, Nara, JP;
Masaya Asakawa, Yamatokoriyama, JP;
Yasuhiro Takai, Sakurai, JP;
Tadasu Taniguchi, Uda, JP;
Norichika Katsura, Tenri, JP;
Masahiko Fujita, Nara, JP;
Yasunobu Ohkawa, Nara, JP;
Masaya Asakawa, Yamatokoriyama, JP;
Yasuhiro Takai, Sakurai, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A paper feeder comprises an acquiring device, a driving roller, driven rollers, a driven roller supporter, a driver, and a controller. The acquiring device acquires thickness information on a sheet of paper. The driving roller rotates by being supplied with torque. The driven rollers rotate with the driving roller when in compressive contact with the driving roller. The driven roller supporter so supports the driven rollers that each of them can rotate under a different rotational load. The driver changes the position of the driven roller supporter relative to the driving roller. The controller selects one of the driven rollers on the basis of the thickness information and so activates the driver as to bring the selected roller into compressive contact with the driving roller.