Dual color electronically addressable ink
AssigneeHewlett-Packard Development Company, L.P.
InventorsJong-Souk Yeo, Igal Berson, Gil Bar-Haim, Yaron Grinwald
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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.
Claims16
A dual color electronically addressable ink, comprising:
- a positively charged ink, including:
- a non-polar carrier fluid;
- pigment-loaded basic resin particles having a first color;
- and
- an acceptor charge adjuvant;
- a negatively charged ink, including:
- the non-polar carrier fluid;
- pigment-loaded acidic resin particles having a second color that is different from the first color;
- and
- a donor charge adjuvant;
- and
- at least one charge director.
A method for making a dual color electronically addressable ink, comprising:
- selecting a positively charged ink, including:
- a non-polar carrier fluid;
- pigment-loaded basic resin particles having a first color;
- and
- an acceptor charge adjuvant;
- selecting a negatively charged ink, including:
- the non-polar carrier fluid;
- pigment-loaded acidic resin particles having a second color that is different from the first color;
- and
- a donor charge adjuvant;
- mixing respective amounts of the positively charged ink and the negatively charged ink together to form a mixture;
- and
- adding an amount at least one charge director to the mixture to form the dual color electronically addressable ink.
Dependencies are inferred from the claim text.