| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inkjet printer ink capable of stably forming a normal image even in printing by a continuous injection type inkjet printer with the use of an ink containing a pigment. <P>SOLUTION: The continuous injection type inkjet printer ink comprises a pigment, a dispersing agent, a humectant, a surface active agent, an electric charge modifier, a pH modifier, and water and has a pigment concentration of 4.0-6.5 mass% and a dry electric conductivity of 0-110 V, and a printer discharge stabilization constant A represented by the formula: A=(1/x)×(y/z) [wherein x is a viscosity (mPa s, 25°C); y is a surface tension (mN/m, 25°C); and z is a density (g/cm<SP>3</SP>, 25°C)] of 25.0-40.0. <P>COPYRIGHT: (C)2009,JPO&INPIT |
