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:
May. 29, 2018
Filed:
Aug. 02, 2016
Fuji Xerox Co., Ltd., Tokyo, JP;
Masato Matsuduki, Kanagawa, JP;
Osamu Shimizu, Kanagawa, JP;
Takashi Saeki, Kanagawa, JP;
Teruki Kishimoto, Kanagawa, JP;
Shinji Kawashima, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
A rotation-information detecting device including: a rotatable rotary member having plural detection target portions arranged at predetermined intervals over an entire circumference of the rotary member; two detectors that are fixedly arranged at two positions of the rotary member in a rotating direction, and can detect the detection target portions; and a computation unit that computes rotation information of the rotary member based on detection information, wherein the two detectors are arranged along the circumferential direction of the rotary member at an interval of an angle of π/N, and wherein the computation unit includes an offset calculating section that offsets an eccentric error of the rotary member based on outputs of the two detectors at a current time point and n outputs at time points back from the current time point by phases of (nπ)/N, to calculate a true rotational error.