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:
Aug. 06, 2019
Filed:
Dec. 06, 2017
Konica Minolta, Inc., Chiyoda-ku, Tokyo, JP;
Hisashi Murata, Toyohashi, JP;
KONICA MINOLTA, INC., Chiyoda-Ku, Tokyo, JP;
Abstract
An image forming apparatus includes a photoconductor, a charging member, a first power supply circuit which supplies electric power to the charging member, a detector configured to detect a current value of an alternating current which flows to the charging member, and a controller configured to control an operation of the first power supply circuit. The controller is configured to lower a frequency of alternating-current power supplied to the charging member by the first power supply circuit when the current value detected by the detector in application of a voltage of a prescribed value to the charging member by the first power supply circuit is equal to or smaller than a predetermined value.