Patent · US Active

Dual color electronically addressable ink

US8514481B2 · kind B2 · utility

21Cited by

18References

16Claims

0Family size

Assignee

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. · US

Inventors

Jong-Souk Yeo · Corvallis, US
Igal Berson · Lod, IL
Gil Bar-Haim · Holon, IL
Yaron Grinwald · Gdera, IL

Key dates

Filing date	Jul 12, 2011
Grant date	Aug 20, 2013
Priority date	—
Expiry date	Apr 22, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02F2001/1678
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A dual color electronically addressable ink includes a positively charged ink and a negatively charged ink. The positively charged ink includes a non-polar carrier fluid, pigment-loaded basic resin particles having a first color, and an acceptor charge adjuvant. The negatively charged ink includes the non-polar carrier fluid, pigment-loaded acidic resin particles having a second color that is different than the first color, and a donor charge adjuvant. The dual color electronically addressable ink also includes at least one charge director.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.