Ink jet ink, method for producing ink jet ink, ink jet recording method and ink cartridge
AssigneeCanon Kabushiki Kaisha
InventorsKoichi Osumi, Sadayuki Sugama
Life of this patent
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Abstract
An ink jet ink includes at least a coloring material. The coloring material is composed of at least one selected from the group consisting of C.I. Acid Blue 9 and a compound having a copper phthalocyanine structure, and a compound represented by the following general formula (I) or a salt thereof.
Claims7
An ink jet ink comprising at least a coloring material,
- wherein the coloring material comprises at least one selected from the group consisting of C.I. Acid Blue 9 and a compound having a copper phthalocyanine structure, and a compound represented by the following general formula (I) or a salt thereof.
- wherein 1 represents 0 to 2, m represents 1 to 3 and n represents 1 to 3 (provided that 1+m+n=3 to 4);
- and a substitution position of a substituent is one of 4-position and 4′-position.
A method for producing an ink jet ink comprising a step of filling an ink jet ink tank which stores an ink jet ink comprising, as a coloring material, a compound represented by the following general formula (I) or a salt thereof, with an ink jet ink comprising, as a coloring material, at least one selected from the group consisting of C.I. Acid Blue 9 and a compound having a copper phthalocyanine structure.
- wherein 1 represents 0 to 2, m represents 1 to 3 and n represents 1 to 3 (provided that 1+m+n=3 to 4);
- and a substitution position of a substituent is one of 4-position or 4′-position.
Dependencies are inferred from the claim text.