Color ink-jet inks having improved decap without affecting color-to-black bleed control
AssigneeHewlett-Packard Development Company, L.P.
InventorAlexey S Kabalnov
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Abstract
The present invention relates to an ink-jet ink comprising an improved black-to-color bleed control agent in color inks having better decap properties. The improved bleed control agent comprises a multivalent salt of a perchlorate anion. A method of using the ink-jet ink is also provided. The method comprises formulating the color ink-jet ink with the improved bleed control agent and applying the color ink-jet ink adjacent to a black ink-jet ink on a paper substrate. A method of improving decap of an ink set without affecting color-to-black bleed control is also provided.
Claims21
An ink-jet ink having improved decap time and color-to-black bleed control, comprising:
- at least one component selected from the group consisting of a cosolvent, a surfactant, and a buffer;
- at least one dye;
- and
- a decap agent comprising a multivalent salt of a perchlorate anion, the decap agent formulated to provide an increased decap time to the ink-jet ink without affecting color-to-black bleed control of the ink-jet ink, wherein the ink-jet ink does not include a quaternary amine compound.
A method of printing on a substrate with an ink-jet ink, comprising:
- formulating a color ink-jet ink comprising a cosolvent, a surfactant, a buffer, a dye, and a decap agent, wherein the color ink-jet ink does not include a quaternary amine compound and wherein the decap agent comprises a multivalent salt of a perchlorate anion and is formulated to provide an increased decap time to the color ink-jet ink without affecting color-to-black bleed control of the color ink-jet ink;
- applying the color ink-jet ink on a paper substrate;
- and
- applying a black ink-jet ink adjacent to the color ink-jet ink.
A method of improving decap without affecting color-to-black bleed control of a color ink-jet ink, comprising:
- formulating a color ink-jet ink comprising a cosolvent, a surfactant, a buffer, at least one dye, and a decap agent, wherein the decap agent comprises a multivalent salt of a perchlorate anion and is formulated to provide an increased decap time to the ink-jet ink without affecting color-to-black bleed control of the ink-jet ink and wherein the color ink-jet ink does not include a quaternary amine compound.
Dependencies are inferred from the claim text.