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US 6,743,284 B2Granted
Printing ink composition
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsTakahiro Norimatsu, Akihiko Taniguchi, Masaya Fujioka
Life of this patent
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Abstract
A printing ink composition is provided comprising water, a coloring agent and at least two types of polyalkylene glycol alkyl ethers each having at least one oxyalkylene in its polyoxyalkylene group, wherein at least one of the polyalkylene glycol alkyl ethers is polypropylene glycol n-butyl ether having three or more oxypropylenes in its molecule. This printing ink composition can inhibit color bleeding not only on a printing medium specifically designed for ink-jet printing but also on plain paper.
Claims20
An ink composition, comprising:
- water;
- a coloring agent;
- and
- at least two different types of polyalkylene glycol alkyl ethers each having at least one oxyalkylene in a polyoxyalkylene group,
- wherein at least one of the polyalkylene glycol alkyl ethers is polypropylene glycol n-butyl ether having three or more oxypropylenes in its molecule.
2 more elements
Dependencies are inferred from the claim text.