Ink set, ink system and method for printing an image
AssigneeHewlett-Packard Development Company, L.P.
InventorsStephen W. Bauer, Zeying Ma, Gregg A. Lane
Life of this patent
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Abstract
An ink set includes a light magenta ink and a dark magenta ink. The light magenta ink includes an effective amount of a pigment having a red/green lambda cutoff ranging from about 585 nm to about 600 nm, and reflecting at least about 14% of blue light at a wavelength of about 470 nm when measured at a density at which the light magenta ink provides a maximum magenta chroma. The dark magenta ink includes an effective amount of a pigment having a red/green lambda cutoff greater than or equal to about 605 nm.
Claims22
An ink set, comprising:
- a light magenta ink including an effective amount of a pigment having a red/green lambda cutoff ranging from about 585 nm to about 600 nm, and reflecting at least about 14% of blue light at a wavelength of about 470 nm when measured at a density at which the light magenta ink provides a maximum magenta chroma;
- and
- a dark magenta ink including an effective amount of a pigment having a red/green lambda cutoff greater than or equal to about 605 nm;
- wherein each of the light magenta ink and the dark magenta ink includes a water-based ink vehicle.
A method for printing an image, the method comprising:
- providing an ink set including:
- a light magenta ink, including:
- a water-based vehicle;
- and
- an effective amount of a pigment having a red/green lambda cutoff ranging from about 585 nm to about 600 nm, and reflecting at least about 14% of blue light at a wavelength of about 470 nm when measured at a density at which the light magenta ink provides a maximum magenta chroma;
- and
- a dark magenta ink, including:
- a water-based vehicle;
- and
- an effective amount of a pigment having a red/green lambda cutoff greater than or equal to about 605 nm;
- and
- establishing at least some of the light magenta ink, the dark magenta ink, or combinations thereof on a substrate.
An ink system, comprising:
- a first ink chamber including a light magenta ink including an effective amount of a pigment having a red/green lambda cutoff ranging from about 585 nm to about 600 nm, and reflecting at least about 14% of blue light at a wavelength of about 470nm when measured at a density at which the light magenta ink provides a maximum magenta chroma;
- and
- a second ink chamber including a dark magenta ink including an effective amount of a pigment having a red/green lambda cutoff greater than or equal to about 605 nm;
- wherein each of the light magenta ink and the dark magenta ink includes a water-based ink vehicle.
Dependencies are inferred from the claim text.