发明名称 |
Methods for making spinnable ball, display medium and display device |
摘要 |
Spinnable balls each having two surfaces with different optical characteristics can be produced by forming a plurality of balls with the same specific gravity on a thermoplastic film, and softening the thermoplastic film by controlling a heating temperature thereof based on the specific gravity of the balls so that the hemispheres of the balls are embedded into the thermoplastic film by their own weight. A layer having different optical characteristics from those of the balls is then formed on the exposed surface of each ball. Finally, the balls provided with the layers are detached from the thermoplastic film.
|
申请公布号 |
US6221267(B1) |
申请公布日期 |
2001.04.24 |
申请号 |
US19980149069 |
申请日期 |
1998.09.08 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
IKEDA TSUTOMU;YAGI TAKAYUKI;KISHI ETSURO |
分类号 |
G02B26/02;G02F1/17;G09F9/37;(IPC1-7):G09F9/37 |
主分类号 |
G02B26/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|