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US 8,011,775 B2Granted
Ink set, ink system and method for printing an image
AssigneeHewlett-Packard Development Company, L.P.
InventorsZeying Ma, Alexey S. Kabalnov, Shao-Wei Li, Dennis Z. Guo, Stephen W. Bauer
Life of this patent
Estimating the term…
Abstract
An ink set includes a red ink and a magenta ink. The red ink includes an effective amount of a red pigment having a predetermined red/green lambda cutoff, and the magenta ink includes an effective amount of a magenta pigment having a predetermined red/green lambda cutoff that is substantially similar to the predetermined lambda cutoff of the red pigment.
Claims10
An ink set, comprising:
- a red ink including an effective amount of a red pigment having a predetermined red/green lambda cutoff;
- a magenta ink including a water-based vehicle and an effective amount of a magenta pigment i) having a predetermined red/green lambda cutoff that is substantially similar to the predetermined lambda cutoff of the red pigment and ii) reflecting at least about 14% of blue light at a wavelength of about 470 nm when measured at a density at which the magenta ink provides a maximum magenta chroma;
- a yellow ink including an effective amount of pigment yellow 155;
- a green ink including an effective amount of pigment green 36;
- a cyan ink including an effective amount of pigment blue 15:3;
- a blue ink including an effective amount of pigment violet 23;
- a matte black ink;
- a photoblack ink;
- a medium gray ink;
- a light gray ink;
- a dark magenta ink including a mixture of quinacridone pigments;
- and
- a gloss enhancer;
- wherein the red pigment is pigment red 149, wherein the magenta pigment is the mixture of quinacridone pigments, and wherein the magenta ink is a light magenta ink.
11 more elements
An ink set, comprising:
- a red ink including an effective amount of a red pigment having a predetermined red/green lambda cutoff;
- a magenta ink including an effective amount of a magenta pigment having a predetermined red/green lambda cutoff that is substantially similar to the predetermined lambda cutoff of the red pigment;
- a cyan ink having a hue angle h° value ranging from about 200 to about 260;
- a yellow ink having a hue angle h° value ranging from about 80 to about 120;
- an orange ink having a hue angle h° value ranging from about 10 to about 80;
- a green ink having a hue angle h° value ranging from about 120 to about 200;
- a blue ink having a hue angle h° value ranging from about 260 to about 320;
- a violet ink having a hue angle h° value ranging from about 260 to about 320;
- a black ink selected from i) at least one matte black ink having an average carbon black particle size ranging from about 70 nm to about 200 nm and a first lightness L* value and ii) at least one photoblack ink having an average carbon black particle size ranging from about 20 nm to about 130 nm and a second lightness L* value;
- and
- a gray ink having a third lightness L* value greater than that of the first lightness L* value and second lightness L* value.
8 more elements
An ink system, comprising:
- a first ink supply assembly containing a red ink including an effective amount of a red pigment having a predetermined red/green lambda cutoff;
- a second ink supply assembly containing a magenta ink including a water-based vehicle and an effective amount of a magenta pigment i) having a predetermined red/green lambda cutoff that is substantially similar to the predetermined red/green lambda cutoff of the red pigment;
- and ii) reflecting at least about 14% of blue light at a wavelength of about 470 nm when measured at a density at which the magenta ink provides a maximum magenta chroma;
- a cyan ink having a hue angle h° value ranging from about 200 to about 260;
- a yellow ink having a hue angle h° value ranging from about 80 to about 120;
- a green ink having a hue angle h° value ranging from about 120 to about 200;
- a blue ink having a hue angle h° value ranging from about 260 to about 320;
- at least one matte black ink having an average carbon black particle size ranging from about 70 nm to about 200 nm;
- at least one photoblack ink having an average carbon black particle size ranging from about 20 nm to about 130 nm;
- a medium gray ink;
- a light gray ink;
- a dark magenta ink including pigment red 122, or a mixture of a quinacridone pigment, or a solid solution of a quinacridone pigment;
- and
- a gloss enhancer;
- wherein the red pigment is pigment red 149, and wherein the magenta ink is a light magenta ink including the mixture of the quinacridone pigment or the solid solution of the quinacridone pigment.
12 more elements
Dependencies are inferred from the claim text.