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. 09, 2014
Filed:
Jun. 01, 2012
Kazuyoshi Hara, Itami, JP;
Hidetoshi Noguchi, Tahara, JP;
Satoru Shibuya, Chiryu, JP;
Takahiro Kuroda, Toyokawa, JP;
Kazuyoshi Hara, Itami, JP;
Hidetoshi Noguchi, Tahara, JP;
Satoru Shibuya, Chiryu, JP;
Takahiro Kuroda, Toyokawa, JP;
Konica Minolta Business Technologies, Inc., Chiyoda-ku, Tokyo, JP;
Abstract
An image forming apparatus having: a toner image carrier; a transfer member; a transfer voltage applying device which applies a bias voltage to the transfer member; a voltage controller which performs constant voltage control on the transfer voltage applying device; a transfer contribution current detecting device; an antistatic member for removing static electricity from the record medium after transfer of a toner image; and an antistatic voltage applying device which applies an AC voltage to the antistatic member. The transfer contribution current detecting device measures current values during a current detection time, which corresponds to an integral multiple of a period of the AC voltage applied to the antistatic member, and detects a transfer contribution current value from the measured values, and the voltage controller controls the bias voltage applied to the transfer member based on the transfer contribution current value.