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. 05, 2017
Filed:
Jan. 17, 2017
Kyocera Document Solutions Inc., Osaka, JP;
Yuta Kitabayashi, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
An image forming apparatusincludes four developing devices, four primary transfer rollers, an intermediate transfer belt, voltage applicators, a current detectorand a voltage controller. The voltage applicatorseach apply a voltage to a corresponding one of the four primary transfer rollers. The current detectordetects a first total current value JS of currents flowing through the four primary transfer rollers. The voltage applicatorsapply a detection voltage VS to a primary transfer rolleramong the four primary transfer rollerswhile applying a voltage having the same polarity as the detection voltage VS to all the other primary transfer rollers, and. The detection voltage VS is applied to detect a resistance value Ry of the primary transfer roller. The detection voltage VS has a predetermined voltage value.