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. 23, 2017
Filed:
Jan. 20, 2016
Hiromichi Matsuda, Kanagawa, JP;
Kimiharu Yamazaki, Kanagawa, JP;
Takafumi Seki, Kanagawa, JP;
Jun Yamane, Kanagawa, JP;
Hiromichi Matsuda, Kanagawa, JP;
Kimiharu Yamazaki, Kanagawa, JP;
Takafumi Seki, Kanagawa, JP;
Jun Yamane, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A transfer device includes a belt image bearer; a driving roller that rotates the belt image bearer; a transfer member; first and second driving motors that respectively rotate the driving roller and the transfer member; first and second speed detecting units that respectively detect rotational speeds of the belt image bearer and the transfer member; and a control unit that implements control such that the belt image bearer and the transfer member are rotated at rotational speeds corresponding to a relative speed at which a variation amount is less than a predetermined variation amount, the variation amount being the variation of values of driving torques of the first and second driving motors in a state where the belt image bearer and the transfer member are in contact, with respect to these values in a state where the belt image bearer and the transfer member are separated.