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:
May. 18, 1999
Filed:
Apr. 24, 1996
Applicant:
Inventor:
Shigeru Kagayama, Owariasahi, JP;
Assignee:
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347 55 ; 347141 ; 347142 ;
Abstract
An aperture electrode body of an image forming apparatus according to the invention comprises an insulating sheet made of polyimide as a base material and having a number of apertures and control electrodes for controlling a flow of toner. Reinforcing resin sheets made of polyimide are integrally affixed on both upper and lower surfaces of the insulating sheet. Since the aperture electrode body is prevented from warping due to the difference in characteristics of their materials, a uniform contact state with a toner carrying roller is obtained to thereby control a flow of toner in a stable manner.