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. 06, 1986
Filed:
Feb. 25, 1985
Applicant:
Inventors:
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05C / ;
U.S. Cl.
CPC ...
118663 ; 118657 ; 118712 ;
Abstract
A developing roll is composed of a hollow nonmagnetic sleeve and a permanent magnet disposed therein and having a plurality of poles, the sleeve and the permanent magnet being independently rotatable in the same direction. The hollow nonmagnetic sleeve is rotatable at a constant speed. The permanent magnet is rotatable at varying speeds dependent on a signal indicative of a count value from a printing density counter means for supplying a developer from a developer tank. The printing density counter means successively counts print data to be developed.