| 摘要 |
PROBLEM TO BE SOLVED: To provide an eraser with improved erasability in an electronic black board apparatus and a white board with a writing face on which ink with a marker is hardly erased. SOLUTION: The eraser for wiping a written image with a marker on the writing face comprises a main body case, an inner case body in which a piezoelectric element is arranged, a wiping member stored in this inner case body, and an elastic body for connecting the main body case with the inner case body. COPYRIGHT: (C)2009,JPO&INPIT
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