Patent ID: 7635183

Claim:
An ink-jet recording apparatus comprising: an ink passage through which at least one of a water-based ink and a preservation solution flows; and a rubber member in the ink passage, said rubber member being formed from a rubber in which a butyl rubber polymer serving as a base polymer, zinc oxide serving as a vulcanization agent, and a thiazole-based compound serving as a vulcanization accelerator are employed, wherein the water-based ink includes at least a coloring agent, water and a glycol ether, an amount of the glycol ether being about 5 wt. % to about 10 wt. % with respect to the total weight of the water-based ink; and wherein the preservation solution includes at least water and a glycol ether, an amount of the glycol ether being about 5 wt. % to about 10 wt. % with respect to the total weight of the preservation solution.