| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a light, thin, and small micro capsule magnetic migration display sheet in which recording and erasing are both enabled in a same surface, clear characters are recorded depending on a kind of a magnet, the erasing is performed clearly, and contrast difference of white and black is high. SOLUTION: For this thin micro capsule magnetic migration display sheet, (1) average grain size of micro capsules is 30-170μm, (2) thickness of a solid dispersion layer is 50-360μm, and (3) whole thickness of the micro capsule magnetic migration display sheet is not more than 700μm. In addition, a protective member of 10-200μm is provided on this. Especially as the protective member 6, a film is adhered by an adhesive or a sticker, or the solid dispersion layer 9 is coated with liquid ultraviolet hardening resin and simultaneously covered with a thin film 8, and the resin is hardened. The recording onto this thin micro capsule magnetic migration display sheet is performed in a method of recording something on the sheet with a magnet and erasing it from the surface. As the note-taking magnet, that having a characteristic value not less than surface magnetic flux density of 700 gausses is used.</p> |
