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:
Jun. 17, 1997
Filed:
Jun. 14, 1995
Hiroshi Komakine, Moriguchi, JP;
Kazumasa Hayashi, Osaka, JP;
Katsutoshi Ogawa, Hirakata, JP;
Kenji Asakura, Katano, JP;
Toshiharu Koshino, Kadoma, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Disclosed is an electrophotographic apparatus capable of producing a high-quality image free from image defects such as fine line dropouts. A photoconductor drum is used that has a magnet mounted therein in immovable fashion. After an electrostatic latent image is formed, the image is brought into contact with magnetic developer in a developer reservoir, causing the developer to be attracted to the photoconductor surface by magnetic force. When the photoconductor drum is rotated past an electrode roller to which an AC voltage is applied, toner is left only in image areas and the latent image is developed into a visible image. A sheet-like sealing member contacting the photoconductor is disposed on the upstream side of the developer reservoir in the rotating direction of the photoconductor drum. A conductive layer is provided on the surface of the sealing member opposite the surface thereof contacting the photoconductor.