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. 14, 2013
Filed:
Nov. 05, 2008
Ilanit Mor, Nes Ziona, IL;
Shahar Stein, Petach-Tikva, IL;
Elliad Silcoff, Tel Aviv, IL;
Albert Teishev, Rishon Ie-zion, IL;
Julia Kornilov, Rehovot, IL;
Ilanit Mor, Nes Ziona, IL;
Shahar Stein, Petach-Tikva, IL;
Elliad Silcoff, Tel Aviv, IL;
Albert Teishev, Rishon Ie-zion, IL;
Julia Kornilov, Rehovot, IL;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
The present disclosure is drawn to compositions and methods for a liquid electrophotographic ink printing. The composition comprises a liquid vehicle; ink particles; and a charge director system, comprising i) a primary charge component, ii) a secondary charge component, and iii) an electrical stability additive; such that the charge director system provides the following ink conductivities: a high field conductivity of about 100 pS/cm to about 500 pS/cm, a low field conductivity of about 20 pS/cm to about 200 pS/cm, a direct charge conductivity less than about 30 pS/cm, and a particle conductivity of at least 100 pS/cm. Additionally, the liquid electrophotographic ink can be formulated for printing from a liquid electrophotographic printer.