| 摘要 |
<p>Provided is a microcapsule magnetic migration display including microcapsules arrayed on a substrate. A dispersion liquid containing an oily dispersion medium having two components of light-absorptive magnetic particles and light-reflective non-magnetic particles dispersed therein is encapsulated in the microcapsules, and positions of the two components are allowed to vertically migrate by a magnetic field. The dispersion liquid is one or two or more kinds of oily liquids having a flash point of 70°C or more, a volume density at 15°C of 0.75 to 0.91g/cm 3 , and a dynamic viscosity at 40°C of 7 mm 2 /S or less, is added with 0.5 to 8.0 wt% of non-ionic surfactant with an HLB value of 5.0 or less, and is added with solid particles having a true specific gravity exceeding 1.0 and a particle diameter of 0.1 to 30 µm, thereby adjusting the volume density thereof at 15°C to 1.0 to 1.2 g/cm 3 .</p> |
