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:
Apr. 06, 2004
Filed:
May. 10, 2002
Katsutoshi Ogawa, Hirakata, JP;
Masahiro Aizawa, Takatsuki, JP;
Akira Kumon, Katano, JP;
Akira Fukano, Ikoma, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An image forming device includes a developer carrier ( ) for carrying a charged developer ( ), and a developer passing controller ( ) for applying a voltage corresponding to an image. signal to a plurality of control electrodes ( ) to control the passing of said developer ( ), the developer passing controller having a plurality of developer passing holes ( ) through which the developer ( ) passes and said control electrodes being arranged to surround the surroundings of the developer passing holes. The width (W ) of a control electrode row ( ) in the longitudinal direction where the control electrodes ( ) are arranged is wider than the width (W ) of an image forming area, and both ends (B , B ) of the control electrode row ( ) in the longitudinal direction are arranged outside the width (W ) of an image forming area.