Ink composition, ink cartridge having ink composition, and method of filling ink cartridge
AssigneeEastman Kodak Company
InventorsJames W. Blease, L. Ronald Whitlock
Life of this patent
Estimating the term…
Abstract
An ink composition and an ink cartridge having the ink composition are provided. The ink composition includes a colorant and an aqueous carrier, the ink composition having a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. and a static surface tension at 25° C. of greater than 34 dynes/cm. The ink cartridge includes an ink container filled with a liquid ink, the liquid ink having a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. and a static surface tension at 25° C. of greater than 34 dynes/cm. The ink container can be a collapsible bag.
Claims23
An ink cartridge comprising:
- a housing having a front side wall, a back side wall opposite the front side wall, a pair of opposed left and right side walls separating the front and the back side walls, and a bottom wall, the walls defining an internal cavity within the housing;
- an ink container located within the internal cavity and filled with a liquid ink, the liquid ink having a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. and a static surface tension at 25° C. of greater than 34 dynes/cm and less than 40 dynes/cm, wherein the liquid ink comprises a colorant, the colorant including a pigment.
An ink composition comprising:
- a colorant and an aqueous carrier, wherein the ink composition has a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. and a static surface tension at 25° C. of greater than 34 dynes/cm and less than 40 dynes/cm, wherein the colorant includes a pigment.
A method of filling an ink cartridge comprising:
- providing a housing having a front side wall, a back side wall opposite the front side wall, a pair of opposed left and right side walls separating the front and the back side walls, and a bottom wall, the walls defining an internal cavity within the housing;
- providing an ink container;
- positioning the ink container within the internal cavity;
- and
- filling the ink container with a liquid ink having a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. and a static surface tension at 25° C. of greater than 34 dynes/cm and less than 40 dynes/cm, wherein the liquid ink comprises a colorant, the colorant including a pigment.
An ink cartridge comprising:
- an ink container filled with a liquid ink, the liquid ink having a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. and a static surface tension at 25° C. of greater than 34 dynes/cm and less than 40 dynes/cm, wherein the liquid ink comprises a colorant, the colorant including a pigment.
Dependencies are inferred from the claim text.