| 发明名称 | Friction body, writing instrument and writing instrument set | ||
| 摘要 | There is provided a friction body which is adapted to rub a thermochromic image or handwriting formed on a paper surface by use of thermochromic ink to thermally discolor the thermochromic image or handwriting by frictional heat resultant from rubbing, a thermal conductivity of a friction portion of the friction body is set to be within 0.05 W/(m·K) to 50 W/(m·K). | ||
| 申请公布号 | US9592702(B2) | 申请公布日期 | 2017.03.14 |
| 申请号 | US200812124211 | 申请日期 | 2008.05.21 |
| 申请人 | THE PILOT INK CO., LTD.;KABUSHIKI KAISHA PILOT CORPORATION | 发明人 | Wase Takashi;Yasuda Michiyuki;Okawara Yoshiaki |
| 分类号 | B43K1/08;B43K7/02;B43K7/10;B43K8/04;B43K8/06;B43K23/12;B43K29/02;B43L19/00;C09D11/16;C09D11/18 | 主分类号 | B43K1/08 |
| 代理机构 | Sughrue Mion, PLLC | 代理人 | Sughrue Mion, PLLC |
| 主权项 | 1. A friction body which is adapted to rub a thermochromic image or handwriting formed on a paper surface by use of thermochromic ink to thermally discolor the thermochromic image or handwriting by frictional heat resultant from rubbing, wherein thermal conductivity of a friction portion of the friction body is ranging from 0.05 W/(m·K) to 50 W/(m·K). | ||
| 地址 | Aichi JP | ||