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:
Dec. 23, 1986
Filed:
Jul. 05, 1985
Wolfgang Podszun, Cologne, DE;
John Goossens, Cologne, DE;
Carlhans Suling, Odenthal, DE;
Herman Uytterhoeven, Bonheiden, BE;
Walter de Winter, Grafenwezen, BE;
Gunther Hoffarth, Leverkusen, DE;
Wolfgang Richter, Krefeld, DE;
Agfa Gevaert Aktiengesellschaft, Leverkusen, DE;
Abstract
An electrostatographic suspension developer contains, in an electrically insulating carrier liquid with a volume resistivity of at least 10.sup.9 Ohm. cm and a dielectric constant of below 3, a dispersed pigment and a polymer of basic secondary or tertiary amino group-containing monomers, the amino groups of which are completely or partially neutralized with a Bronsted acid, which contains at least one hydrocarbon radical having from 6 to 24 carbon atoms, and optionally further comonomers.