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. 13, 1982
Filed:
Aug. 20, 1980
Applicant:
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355 / ; 118657 ; 118658 ;
Abstract
A magnetic brush development apparatus of the type comprising a plurality of rotatable, non-magnetic sleeves having stationary, inner magnets and capable of successively scooping up developer to the development section by the sleeves, wherein the magnets in the adjacent sleeves, located in the region where the developer is transferred from one sleeve to the next sleeve, are the same in polarity.