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. 21, 1989
Filed:
Feb. 24, 1987
Applicant:
Inventors:
Sachiko Yasuda, Tokyo, JP;
Minoru Yoshida, Tokyo, JP;
Tomoyuki Asada, Yokohama, JP;
Hideo Mukai, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 355 / ; 118651 ;
Abstract
In a developing apparatus for developing an electrostatic-latent image by applying a charged developer to the electrostatic-latent image formed on a surface of an image carrier, a housing which stores the developer has a developing roller for feeding the developer therefrom to a developing position. A developer supply roller for supplying a triboelectrically charged developer is in rolling contact with the developer roller. The developer supply roller has a conductive material, and is rotated while electrostatically holding a developer so as to charge it by friction.