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:
Nov. 04, 1980
Filed:
Apr. 04, 1978
Applicant:
Inventors:
Assignee:
AGFA-Gevaert, A.G., Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
118655 ; 430121 ; 361212 ;
Abstract
A cascade-type developing unit for an electrostatic copying apparatus is disclosed. A mixture of toner and carrier particles circulates in the unit and its particles become electrostatically charged due to electrification. An arrangement is provided for limiting the charge of the particles to user-selectable values.