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:
Jul. 17, 1979
Filed:
Jul. 20, 1977
Applicant:
Inventors:
Yvan K Gilliams, Hever, BE;
Noel J De Volder, Edegem, BE;
Assignee:
AGFA-GEVAERT N.V., Mortsel, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
252 / ; 96 / ; 260 / ; 260 / ;
Abstract
A liquid developer composition suitable for use in developing electrostatic charge patterns, which composition contains in an electrically insulating non-polar carrier liquid a dispersed particulate coloring substance, at least one charge control substances, a copolymer (I) precoating the coloring substance particles in a weight ratio of copolymer (I) to coloring substance between 1:1 and 9:1 and a copolymer (II) in the carrier liquid in a weight ratio of copolymer (II) to coloring substance between 0.5:1 and 5:1,