Color gamut extension of an ink composition
AssigneeXerox Corporation
InventorStephen David White
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Abstract
The present invention describes a method of extending the color gamut of a colored printing ink through the use of a color gamut extending agent or ink. The present method is suitable for use in any printing method such as ink jet printing, and, in particular, acoustic ink printing (AIP).
Claims19
A method for extending the color gamut of a printing ink comprising:
- a) depositing an initial colored printing ink droplet onto a surface to be printed;
- and
- b) subsequently depositing a light scattering compound onto the initial ink droplet;
- wherein the light scattering compound extends the chroma of the underlying initial ink thereby extending the color gamut of the printing ink.
A printing process for extending the color gamut of an ink composition by lightening or darkening the chroma of the ink composition, said process comprising incorporating into an acoustic ink jet printer
- a first ink composition comprising a colorant and a carrier vehicle;
- and,
- a second ink composition comprising a color gamut extending agent or ink selected from
- i) a light scattering agent
- ii) a blending agent or ink, or
- iii) an opaque agent or ink
- wherein said printing process comprises, causing said first ink composition to form a droplet by radiating onto a pool of the first ink, focused acoustic radiation, wherein said droplet of first ink is projected onto a printable surface, further wherein said printing process causes said second ink composition to form a droplet by radiating onto a pool of the second ink composition, focused acoustic radiation, wherein said droplet of said second ink composition is projected onto the droplet of said first ink, thereby extending the color gamut of the first ink.
A lightening agent or ink composition for use in an acoustic ink printing apparatus said lightening agent or ink composition comprising a compound selected from light scattering agents, blending agents or inks and opaque agents or inks.
Dependencies are inferred from the claim text.