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:
Dec. 27, 2016
Filed:
Jun. 02, 2015
Junichi Kawase, Kanagawa, JP;
Junichi Murano, Saitama, JP;
Shoji Asanuma, Kanagawa, JP;
Toshihiro Shimada, Tokyo, JP;
Kouta Hirakawa, Tokyo, JP;
Tsuyoshi Endo, Kanagawa, JP;
Hiroki Ishimitsu, Kanagawa, JP;
Masahiro Ishida, Kanagawa, JP;
Naoki Matsuda, Kanagawa, JP;
Junichi Kawase, Kanagawa, JP;
Junichi Murano, Saitama, JP;
Shoji Asanuma, Kanagawa, JP;
Toshihiro Shimada, Tokyo, JP;
Kouta Hirakawa, Tokyo, JP;
Tsuyoshi Endo, Kanagawa, JP;
Hiroki Ishimitsu, Kanagawa, JP;
Masahiro Ishida, Kanagawa, JP;
Naoki Matsuda, Kanagawa, JP;
RICOH COMPANY, LIMITED, Tokyo, JP;
Abstract
An electronic device comprises: a shielding object that is arranged at least in a plurality of directions and shields noise; and a Helmholtz silencer that is arranged in a direction where the shielding object does not exist, the shielding object and the silencer being arranged with respect to a noise source causing noise such as a driving source that is arranged inside an apparatus body, wherein a neck portion of the Helmholtz silencer is directed to the noise source, a plurality of such Helmholtz silencers are provided to correspond to at least two kinds of frequencies, and installed number of the Helmholtz silencers corresponding to at least two kinds of the frequencies respectively, is made different depending on a distance from the noise source.