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US 7,404,849 B2Granted
Inkjet ink set for improved color reproduction
AssigneeE. I. Du Pont de Nemours and Company
InventorsChristian Jackson, Kuo Hsiung Kung, Richard Douglas Bauer
Life of this patent
Estimating the term…
Abstract
The present invention pertains to a dye-based inkjet ink set and, more particularly, to an ink set with at least six differently colored inks. The ink set includes at least a cyan, magenta, yellow, red, blue and green ink.
Claims25
An inkjet ink set comprising:
- (a) a first aqueous dye-based ink that is cyan in color and has a hue angle of between about 180 and about 250;
- (b) a second aqueous dye-based ink that is yellow in color and has a hue angle between about 70 and about 120;
- (c) a third aqueous dye-based ink that is magenta in color and has a hue angle of between about 320 and about 10;
- (d) a fourth aqueous dye-based ink that is blue in color and has a hue angle between about 250 and about 320;
- (e) a fifth aqueous dye-based ink that is red in color and has a hue angle between about 10 and about 70;
- (f) a sixth aqueous dye-based ink that is green in color and has a hue angle between about 120 and about 180;
- and
- (g) a seventh aqueous dye-based ink that is black in color.
5 more elements
An inkjet ink set comprising:
- (a) a first aqueous dye-based ink that is being cyan in color and has a dye content of up to about 4% by weight based on the total weight of said first ink;
- (b) a second aqueous dye-based ink that is yellow in color and has a dye content of up to about 4% by weight based on the total weight of said second ink;
- (c) a third aqueous dye-based ink that is magenta in color and has a dye content of up to about 4% by weight based on the total weight of said third ink;
- (d) a fourth aqueous dye-based ink that is blue in color and has a dye content of at least about 4% by weight based on the total weight of said fourth ink:
- (e) a fifth aqueous dye-based ink that is red in color and has a dye content of at least about 4% by weight based on the total weight of said fifth ink;
- (f) a sixth aqueous dye-based ink that is green in color and has a dye content of at least about 4% by weight based on the total weight of said sixth ink;
- and
- (g) a seventh aqueous dye-based ink that is black in color.
5 more elements
An inkjet printer equipped with an ink set comprising:
- (a) a first aqueous dye-based ink that is cyan in color and has a hue angle of between about 180 and about 250;
- (b) a second aqueous dye-based ink that is yellow in color and has a hue angle between about 70 and about 120;
- (c) a third aqueous dye-based ink that is magenta in color and has a hue angle of between about 320 and about 10;
- (d) a fourth aqueous dye-based ink that is blue in color and has a hue angle between about 250 and about 320;
- (e) a fifth aqueous dye-based ink that is red in color and has a hue angle between about 10 and about 70;
- (f) a sixth aqueous dye-based ink that is green in color and has a hue angle between about 120 and about 180;
- and
- (g) a seventh aqueous dye-based ink that is black in color.
5 more elements
An inkjet printer equipped with an ink set comprising:
- (a) a first aqueous dye-based ink that is being cyan in color and has a dye content of up to about 4% by weight based on the total weight of said first ink;
- (b) a second aqueous dye-based ink that is yellow in color and has a dye content of up to about 4% by weight based on the total weight of said second ink;
- (c) a third aqueous dye-based ink that is magenta in color and has a dye content of up to about 4% by weight based on the total weight of said third ink;
- (d) a fourth aqueous dye-based ink that is blue in color and has a dye content of at least about 4% by weight based on the total weight of said fourth ink;
- (e) a fifth aqueous dye-based ink that is red in color and has a dye content of at least about 4% by weight based on the total weight of said fifth ink;
- (f) a sixth aqueous dye-based ink that is green in color and has a dye content of at least about 4% by weight based on the total weight of said sixth ink;
- and
- (g) a seventh aqueous dye-based ink that is black in color.
5 more elements
A method for ink jet printing onto a substrate, comprising the steps of:
- (A) providing an ink jet printer that is responsive to digital data signals;
- (B) loading the printer with a substrate to be printed;
- (C) loading the printer with an inkjet ink set;
- and
- (D) printing onto the substrate using the inkjet ink set in response to the digital data signals,
- wherein the inkjet ink set comprises:
- (a) a first aqueous dye-based ink that is cyan in color and has a hue angle of between about 180 and about 250;
- (b) a second aqueous dye-based ink that is yellow in color and has a hue angle between about 70 and about 120;
- (c) a third aqueous dye-based ink that is magenta in color and has a hue angle of between about 320 and about 10;
- (d) a fourth aqueous dye-based ink that is blue in color and has a hue angle between about 250 and about 320;
- (e) a fifth aqueous dye-based ink that is red in color and has a hue angle between about 10 and about 70;
- (f) a sixth aqueous dye-based ink that is green in color and has a hue angle between about 120 and about 180;
- and
- (g) a seventh aqueous dye-based ink that is black in color.
11 more elements
A method for ink jet printing onto a substrate, comprising the steps of:
- (A) providing an ink jet printer that is responsive to digital data signals;
- (B) loading the printer with a substrate to be printed;
- (C) loading the printer with an inkjet ink set;
- and
- (D) printing onto the substrate using the inkjet ink set in response to the digital data signals,
- wherein the inkjet ink set comprises:
- (a) a first aqueous dye-based ink that is being cyan in color and has a dye content of up to about 4% by weight based on the total weight of said first ink;
- (b) a second aqueous dye-based ink that is yellow in color and has a dye content of up to about 4% by weight based on the total weight of said second ink;
- (c) a third aqueous dye-based ink that is magenta in color and has a dye content of up to about 4% by weight based on the total weight of said third ink;
- (d) a fourth aqueous dye-based ink that is blue in color and has a dye content of at least about 4% by weight based on the total weight of said fourth ink;
- (e) a fifth aqueous dye-based ink that is red in color and has a dye content of at least about 4% by weight based on the total weight of said fifth ink;
- (f) a sixth aqueous dye-based ink that is green in color and has a dye content of at least about 4% by weight based on the total weight of said sixth ink;
- and
- (g) a seventh aqueous dye-based ink that is black in color.
11 more elements
An inkjet ink set comprising:
- (a) a first aqueous dye-based ink that is cyan in color and has a hue angle of between about 180 and about 250;
- (b) a second aqueous dye-based ink that is yellow in color and has a hue angle between about 70 and about 120;
- (c) a third aqueous dye-based ink that is magenta in color and has a hue angle of between about 320 and about 10;
- (d) a fourth aqueous dye-based ink that is blue in color and has a hue angle between about 250 and about 320;
- (e) a fifth aqueous dye-based ink that is red in color and has a hue angle between about 10 and about 70;
- (f) a sixth aqueous dye-based ink that is green in color and has a hue angle between about 120 and about 180;
- and
- (g) a seventh aqueous ink that is black in color;
- further comprising an eighth ink that is a colorless ink containing a durability enhancing or gloss enhancing ingredient.
6 more elements
An inkjet ink set comprising:
- (a) a first aqueous dye-based ink that is cyan in color and has a hue angle of between about 180 and about 250;
- (b) a second aqueous dye-based ink that is yellow in color and has a hue angle between about 70 and about 120;
- (c) a third aqueous dye-based ink that is magenta in color and has a hue angle of between about 320 and about 10;
- (d) a fourth aqueous dye-based ink that is blue in color and has a hue angle between about 250 and about 320;
- (e) a fifth aqueous dye-based ink that is red in color and has a hue angle between about 10 and about 70;
- (f) a sixth aqueous dye-based ink that is green in color and has a hue angle between about 120 and about 180;
- and
- (g) a seventh aqueous ink that is black in color;
- further comprising an eighth ink that is a fixing fluid.
6 more elements
Dependencies are inferred from the claim text.