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. 25, 2018
Filed:
May. 24, 2017
Shinichi Namekata, Kanagawa, JP;
Naoto Suzuki, Kanagawa, JP;
Yohhei Watanabe, Kanagawa, JP;
Takashi Sakamaki, Kanagawa, JP;
Teppei Kawata, Kanagawa, JP;
Masateru Ujiie, Kanagawa, JP;
Shinichi Namekata, Kanagawa, JP;
Naoto Suzuki, Kanagawa, JP;
Yohhei Watanabe, Kanagawa, JP;
Takashi Sakamaki, Kanagawa, JP;
Teppei Kawata, Kanagawa, JP;
Masateru Ujiie, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A fixing device includes an endless belt, a drive rotator, a driven rotator, a rotation detector, and circuitry. The drive rotator contacts and rotates the endless belt. The driven rotator contacts an inner circumferential surface of the endless belt. The rotation detector detects a rotational speed of the driven rotator. The circuitry is operatively connected to the rotation detector to control a rotational speed of the drive rotator based on the rotational speed of the driven rotator detected by the rotational detector. The circuitry changes the rotational speed of the drive rotator when a recording medium bearing a toner image is not conveyed over the endless belt.