发明名称 |
Ink and eraser of the ink |
摘要 |
Colored ink comprising a developer having a phenolic hydroxyl group, an electron-donating colorless dye which develops a color by the action of the developer, and a solvent which does not inhibit a color developing reaction. Handwriting written in this colored ink can be erased by using an eraser comprising a desensitizing compound which makes the colored electron-donating dye colorless.
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申请公布号 |
US4557618(A) |
申请公布日期 |
1985.12.10 |
申请号 |
US19820452050 |
申请日期 |
1982.12.22 |
申请人 |
PENTEL KABUSHIKI KAISHA |
发明人 |
IWATA, MASAHIRO;MIYASHITA, YUSHI;TAKA, YUICHI |
分类号 |
B43K8/02;B43K23/12;B43K29/05;C09D10/00;C09D11/00;(IPC1-7):B43K27/12;B43K7/00 |
主分类号 |
B43K8/02 |
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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