| 摘要 |
<p>PURPOSE:To make a display of a printing area to be generated by magnetization vivid. CONSTITUTION:In a visible magnetic card, a magnetic recording sheet 2 and a display sheet 3 having a transparent display section 8 are provided in a facing arrangement, a display cell 4 is formed in between the sheets 2 and 3, magnetic particles are loaded into the display cell 4 and sealed, and the magnetic particles are fixed to a magnetic latent image on the face of the magnetic record sheet 2 so as to display. In the display cell 4, silicic anhydride, silicate, aluminum oxide, magnesium oxide, titanium oxide, and other inorganic fine particle fluidizing agent are mixed so as to prevent the magnetic particles from coagulating among themselves and attach the fine particle fluidizing agent on the inner wall of the display cell 4 uniformly. Thus, attaching of the magnetic particles to the inner wall of the display cell due to electrification is prevented.</p> |
