IP Library › Granted Patent US 7,118,620
Granted Patent B2
US 7,118,620 · App. 10/640,191 · Granted Oct 10, 2006

Inkjet inks with particulate additive

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Quick Facts
Patent No.
US 7,118,620
App. No.
10/640,191
Granted
Oct 10, 2006
Kind
B2
Abstract

To reduce show through, particularly for color pigments, a particulate negative metal oxide. Specifically in an anionic ink, tin oxide of primary particle size in the range of about 10 to 30 nm, is incorporated in inkjet inks in amount of less than 2 percent by weight of the total weight of the ink.

Claims (4)

1. An aqueous, inkjet ink comprising a color pigment and water vehicle wherein the improvement comprises said ink having greater than or equal to about 0.9 percent by weight and less than 2 percent by weight of tin oxide suspended in said ink, said tin oxide having a primary particle size of less than 200 nm.

2. The inkjet ink as in claim 1 in which said primary particle size is in the range of 10 to 30 nm.

3. The inkjet ink as in claim 1 in which said ink comprises about 0.9% percent by weight of said tin oxide suspended in said ink.

4. The inkjet ink as in claim 3 in which said primary particle size is in the range of 10 to 30 nm.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 14, 2013
From: LEXMARK INTERNATIONAL, INC.; LEXMARK INTERNATIONAL TECHNOLOGY, S.A.
To: FUNAI ELECTRIC CO., LTD
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