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:
Feb. 09, 1999
Filed:
Nov. 06, 1997
Applicant:
Inventor:
Hirokatsu Shimada, Toyokawa, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06G / ;
U.S. Cl.
CPC ...
399102 ; 399103 ;
Abstract
A developing device includes a developer carrying member opposed to an electrostatic latent image carrier and carrying developer on its surface, a sealing member in contact with a surface of each end of the developer carrying member, and a developer entry preventing filler interposed between the developer carrying member and the sealing member for preventing entry of the developer, and containing fine powder. The fine powder has a volume average particle diameter of 1 .mu.m or less, and is made of an organic or inorganic material. The filler may contain silicon oil or grease.