| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ink composition which has excellent ejection stability and which can easily form an image excellent in gas resistance; and to provide a printed matter having an image formed thereon, the image being excellent in gas resistance. <P>SOLUTION: The ink composition to be ejected by an inkjet system comprises: silver particles; and water, wherein: when a composition A formed of components of the ink composition other than the water is held in an atmosphere at an ambient temperature of 23°C and a relative humidity (RH) of 50%, the equilibrium moisture content of the composition A is in a range of 2 to 7.8 mass%; and when the composition A formed of components of the ink composition other than the water is held in an atmosphere at an ambient temperature of 23°C and a relative humidity (RH) of 70%, the equilibrium moisture content of the composition A is in a range of 4 to 15.9 mass%. <P>COPYRIGHT: (C)2012,JPO&INPIT |
