| 摘要 |
PROBLEM TO BE SOLVED: To obtain a clear fingerprint pattern for a long time and also to easily clean stain. SOLUTION: A lubricating layer 11 that has water repellency is provided on the surface of an elastic layer 2. Flororesin and silicone mold release agents are suitable for the layer 11, specially, an elastic layer surface is preliminarily coated with a silane coupling agent and after that, the layer 11 can be formed. Also, the lubricating layer 11 is 5 μm and is preferably formed in 0.5 to 3 μm film thickness, and the layer 2 is below 50 μm and is preferably formed in 10 to 20 μm film thickness. |
