| abstract |
Provided is an ink cartridge capable of stably supplying an ink capable of forming a high-density and unbleached image to an ink jet printer. A container having an ink storage chamber for storing ink, an ink supply port for supplying ink to a recording apparatus, an air communication portion for communicating the atmosphere with the ink storage chamber, and ink stored in the container. An ink cartridge having negative pressure generating means for holding ink in a container, wherein the negative pressure generating means is a porous body that absorbs and holds ink by capillary force, and the colorant of the ink contains a pigment containing a pigment as a polymer. The polymer has an amount of aromatic rings in the polymer of not less than 20% by weight and not more than 70% by weight, and the amount of polyvalent cations contained in the liquid component of the ink is 500 ppm. An ink cartridge characterized by the following. [Selection diagram] Fig. 1 |