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:
Feb. 18, 2014
Filed:
Apr. 27, 2011
Seigo Makida, Kanagawa, JP;
Shoji Yamaguchi, Kanagawa, JP;
Seigo Makida, Kanagawa, JP;
Shoji Yamaguchi, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A sensing device includes: a magnetic field generating coil that generates an alternating magnetic field in a sensing-target region; a signal inducing coil in which is induced an electric signal corresponding to the alternating magnetic field generated by the magnetic field generating coil; an amplifier that amplifies a third electric signal obtained from the difference between a first electric signal induced in the signal inducing coil in a state where a sensing-target magnetic body is present in the sensing-target region and a second electric signal induced in the signal inducing coil in a state where the magnetic body is not present in the sensing-target region; and a sensing unit that senses, on the basis of the third electric signal amplified by the amplifier, the magnetic body passing through the sensing-target region by sensing a change in the magnetic field resulting from magnetization reversal of the magnetic body.