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. 25, 2020
Filed:
Dec. 26, 2017
Hayato Fujita, Kanagawa, JP;
Keita Maejima, Kanagawa, JP;
Hiroshi Okamura, Kanagawa, JP;
Masaki Tsugawa, Kanagawa, JP;
Yuji Ikeda, Kanagawa, JP;
Yohei Kushida, Kanagawa, JP;
Emiko Kawarasaki, Tochigi, JP;
Hayato Fujita, Kanagawa, JP;
Keita Maejima, Kanagawa, JP;
Hiroshi Okamura, Kanagawa, JP;
Masaki Tsugawa, Kanagawa, JP;
Yuji Ikeda, Kanagawa, JP;
Yohei Kushida, Kanagawa, JP;
Emiko Kawarasaki, Tochigi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A thickness detector includes a rotator having different shape marks, disposed at different positions in a rotation direction; an opposing member disposed opposite the rotator; a detector to detect and output a displacement amount of the rotator or the opposing member in a sheet thickness direction; and a controller. The controller is configured to acquire first output values for one rotation from the detector, in a state without sheet; determine, based on a value output from the detector, whether one of the plurality of marks is detected in a state with the sheet held; acquire a predetermined number of second output values after one of the marks is detected; extract, from the first output values, values corresponding to the second output values, based on the value corresponding to the detected mark; and calculate a sheet thickness based on the second output values and the extracted first output values.