| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain inkjet recording ink for stable printing by using pigment and/or a polymer fine particle and to provide a method for producing ink-jet printing ink. <P>SOLUTION: The inkjet recording ink is ink containing pigment and/or a polymer fine particle in which when viscosity is measured for each angle of inclination by changing an inclination angle θ to a horizontal plane once or more times by a rolling ball type viscosity measurement method at 20°C temperature condition, relation between the viscosity of the ink and sine (SINθ) of angle θ at the measurement of the viscosity is applied to the following linear expression Y=AX+B(SINθ=X) (X is sine (SINθ) of angle θ, Y is measured viscosity (MPa s), A is an absolute value of gradient value, B is a value (zero shear viscosity (MPa s)) when the gradient value is extrapolated to zero), A/B is ≤0.2. <P>COPYRIGHT: (C)2008,JPO&INPIT |
