Liquid electrophotographic ink composition

US10591839B2 · kind B2 · utility

Assignee

• HP INDIGO B.V. · NL

Inventors

• Gil Bar-Haim · Holon, IL
• Shiran Zabar · Nes Ziona, IL
• Danny Feldman · Nes Ziona, IL
• Alina Grishman · Rehovot, IL
• Albert Teishev · Nesher, IL

Key dates

• Filing date: Jul 28, 2016
• Grant date: Mar 17, 2020
• Expiry date: Jul 28, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G9/1355
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Herein is described a liquid electrostatic ink composition comprising a carrier liquid, a resin, a colorant selected from a magenta colorant, a cyan colorant and a black colorant, an amine-containing basic dispersant having a total base number (TBN) in the range of about 10 to about 65 mgKOH/g material, the amine-containing basic dispersant present in an amount from about 5 wt. % to about 40 wt. % by total weight of colorant.