Hewlett-packard Development Company, L.P.

Hewlett-packard Indigo B.v.

Yigal Berson

Yaron Grinwald

Zhang-Lin Zhou

Albert Teishev

Gregg Combs

Jeffrey Todd Mabeck

Stella Stolin Roditi

Gil Bar-Haim

Gregg Alan Combs

Positively charged ink compositions, its use and method of making the same are disclosed. A disclosed example of the positively charged ink compositions includes a combination of a carrier liquid, basic pigment-loaded resin particles, a charge director and an acidic charge adjuvant.

Positively charged ink composition

An electronic ink containing charged particles includes a combination of resin particles, a pigment, and a charge director. The resin particles exhibit an average particle size less than 1.0 micron and contain a resin that exhibits a molecular weight of 500 to 20,000. The pigment is loaded on the resin particles. The charge director can physically associate with the resin particles. The charged particles may be negative or positive.

Electronic inks and displays and image displaying methods

Growing community of inventors

Lod, Israel

Yigal Berson