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. 17, 2010
Filed:
Aug. 06, 2007
Hitoshi Ishibashi, Kanagawa, JP;
Kohta Fujimori, Kanagawa, JP;
Shin Hasegawa, Kanagawa, JP;
Yushi Hirayama, Kanagawa, JP;
Nobutaka Takeuchi, Kanagawa, JP;
Shinji Kato, Kanagawa, JP;
Kayoko Tanaka, Tokyo, JP;
Naoto Watanabe, Kanagawa, JP;
Kentaroh Tomita, Kanagawa, JP;
Satoru Komatsubara, Kanagawa, JP;
Akio Kosuge, Kanagawa, JP;
Hitoshi Ishibashi, Kanagawa, JP;
Kohta Fujimori, Kanagawa, JP;
Shin Hasegawa, Kanagawa, JP;
Yushi Hirayama, Kanagawa, JP;
Nobutaka Takeuchi, Kanagawa, JP;
Shinji Kato, Kanagawa, JP;
Kayoko Tanaka, Tokyo, JP;
Naoto Watanabe, Kanagawa, JP;
Kentaroh Tomita, Kanagawa, JP;
Satoru Komatsubara, Kanagawa, JP;
Akio Kosuge, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes an image carrier configured to carry an image and a charger to which a direct current voltage overlapped with an AC voltage is applied as a charging bias to charge the image carrier. The charger is positioned in contact or contactlessly with the image carrier. A controller performs an adjustment to the AC voltage multiple times to gradually bring the AC voltage to a target value.