| 摘要 |
PURPOSE:To improve the display quality of the titled sheet by uniforming the distribution of microcapsules in a display layer formed on a transparent base material. CONSTITUTION:The display layer B consisting of the microcapsules 3 and binders 4 is formed by coating on one surface of the transparent base material A. Here, the capsules 3 contain magnetic particles 1, nonmagnetic particles 2 which have a different color or reflection factor from the particles 1 and larger specific gravity than the particles 1, a surface active agent, and a solvent. Then a magnetic recording layer C and a protection layer 5 are laminated on the layer B in order. Then when coating liquid for the layer B has high viscosity, a strong magnetic field is applied by a magnetic field device 6 from the side of the base material A right after the coating to array irregular capsules 3 by mutual movement, thereby uniforming the distribution. |
