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. 24, 2004
Filed:
Aug. 12, 2002
Minoru Matsuo, Tokyo, JP;
Shigeharu Nakamura, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Disclosed are an electrification apparatus and an image forming apparatus which reduce ozone generation, provide uniform electrification of a photosensitive body, and have high durability. This electrification apparatus comprises: a first magnet means composed of a magnetized base body obtained by magnetizing a base body of the photosensitive body drum or a magnet configured inside of the base body of the photosensitive body drum; a second magnet means magnetically levitated outside of the photosensitive body drum by the first magnet means; and a discharge electrode firmly attached to a face of the second magnet means opposed to the photosensitive body surface, the discharge electrode having a predetermined distance to the photosensitive body surface.