| abstract |
A water-based ink containing a surface treated pigment as a coloring material, a water-soluble organic solvent, water, both for dispersing the pigment, an organic pH buffer selected from Good's buffers, and a compound selected from aminopropanediol derivatives. This water-based ink has a high storage stability which exhibits reduced change in pH, in particular, reduced decrease of pH during the storage. Due to this, it is possible to provide a highly durable inkjet recording apparatus wherein dissolution of the member constituting the printer system that comes in contact with the ink is prevented, and a recording process. |