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. 16, 1976
Filed:
Jul. 24, 1975
Applicant:
Inventors:
Kenneth A Metcalfe, Lockleys, South Australia, AU;
Alwin S Clements, Largs Bay, South Australia, AU;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
252 / ; 252 6212 ;
Abstract
A method for making an electrophotographic developer having developer particles suspended in an insulating carrier liquid comprising reactively producing the developer particles by placing into the carrier liquid at least two substances which are both soluble in the carrier liquid and are insulators relative to the carrier liquid and when in a dissolved state in the carrier liquid precipitate in the carrier liquid to form the developer particles. The developer particles are maintained in the carrier liquid so as to be shielded against oxidation until used as a developer.