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. 08, 2009
Filed:
May. 09, 2006
Takeshi Uchitani, Kamakura, JP;
Eisaku Murakami, Tokyo-to, JP;
Yoshiyuki Kimura, Tokyo-to, JP;
Masahiko Satoh, Machida, JP;
Masanori Kawasumi, Yokohama, JP;
Hideki Zemba, Kawasaki, JP;
Eiji Shimojo, Tokyo-to, JP;
Shunichi Hashimoto, Yokohama, JP;
Shin Kayahara, Yokohama, JP;
Takeshi Uchitani, Kamakura, JP;
Eisaku Murakami, Tokyo-to, JP;
Yoshiyuki Kimura, Tokyo-to, JP;
Masahiko Satoh, Machida, JP;
Masanori Kawasumi, Yokohama, JP;
Hideki Zemba, Kawasaki, JP;
Eiji Shimojo, Tokyo-to, JP;
Shunichi Hashimoto, Yokohama, JP;
Shin Kayahara, Yokohama, JP;
Ricoh Co., Ltd., Tokyo, JP;
Abstract
A method and an apparatus of controlling a charge voltage including the steps of applying, charging, detecting, and determining. The applying step applies an application voltage having a direct-current voltage and an alternating-current voltage superimposed onto the direct-current voltage to a charge-applying member to charge a charge carrier. The changing step charges the alternating-current voltage of the application voltage. The detecting step detects an alternating current flowing through the charge carrier when the charge-applying member applies the application voltage to the charge carrier. The determining step determines a value of the alternating-current voltage of the application voltage based on at least two alternating currents detected by the alternating-current detector.