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US 8,465,577 B2Granted
Blue, red, and yellow dye compounds, and black ink composition comprising the same
AssigneeEverlight USA, Inc.
InventorsHsiao-San Chen, Jen-Fang Lin
Life of this patent
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Abstract
A novel black ink composition is provided. In the black ink composition of the present invention, the dye compounds include a blue dye compound of formula (I), a red dye compound of formula (II) and a yellow dye compound of formula (III). The black ink composition of the present invention is suitable for inkjet printing to improve light-fastness and printing property.
Claims15
A blue dye compound, having a structure of formula (I):
- wherein R1 and R2 are independently Cl, COOM, NO2 or OCH3, M is H, Na, Li or NH4;
- m is 0 or 1;
- and n is 0 or 1.
A red dye compound, having a structure of formula (II):
- wherein R3 and R4 are independently Cl, COOM, NO2 or OCH3, M is H, Na, Li or NH4;
- m is 0 or 1;
- and n is 0 or 1.
A yellow dye compound, having a structure of formula (III):
- wherein R5 and R6 are independently Cl, COOM, NO2 or OCH3, M is H, Na, Li or NH4;
- m is 0 or 1;
- and n is 0 or 1.
A black ink composition, comprising:
- 0.1 to 15 wt % of dye compounds including:
- a blue dye compound, having a structure of formula (I):
- wherein R1 and R2 are independently Cl, COOM, NO9 or OCH3, M is H, Na, Li or NH4;
- m is 0 or 1;
- and n is 0 or 1;
- a red dye compound, having a structure of formula (II):
- wherein R1 and R4 are independently Cl, COOM, NO9 or OCH3, M is H, Na, Li or NH4;
- m is 0 or 1;
- and n is 0 or 1;
- and
- a yellow dye compound, having a structure of formula (III):
- wherein R5 and R6 are independently Cl, COOM, NO2 or OCH3, M is H, Na, Li or NH4;
- m is 0 or 1;
- and n is 0 or 1;
- 5 to 60 wt % of an organic solvent;
- and
- water.
14 more elements
Dependencies are inferred from the claim text.