发明名称 |
Friction body, writing instrument and writing instrument set |
摘要 |
A friction body that produces frictional heat allowing development, disappearance or change of color of handwriting formed with a writing instrument for producing thermochromic handwriting, with the friction body having a friction coefficient of 0.2 to 1.0 when rubbed against paper surface, and a writing instrument for use in forming thermochromic handwriting which is equipped with the friction body and a writing instrument set including the friction body and a writing instrument for use in forming thermochromic handwriting. |
申请公布号 |
US8282299(B2) |
申请公布日期 |
2012.10.09 |
申请号 |
US20070946071 |
申请日期 |
2007.11.28 |
申请人 |
ITO YOSHIHIRO;OHKAWA SHOUICHI;FUJITA KATSUYUKI;THE PILOT INK CO., LTD. |
发明人 |
ITO YOSHIHIRO;OHKAWA SHOUICHI;FUJITA KATSUYUKI |
分类号 |
B43K29/00 |
主分类号 |
B43K29/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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