| 摘要 |
PURPOSE:To provide the titled ink which a gives a clear handwriting which can be easily erased, by mixing a developer composed of a novolak type phenolic resin, an electron-donating org. compd. capable of developing color by said developer, a solvent and dimethylsiloxane. CONSTITUTION:A developer (A) composed of a novolak type phenolic resin, a colorless electron-donating org. compd. (B) (e.g. Crystal Violet Lactone) capable of developing color by said developer, a solvent (C) composed of an arom. alcohol (e.g. benzyl alcohol) and/or ethylene glycol monophenyl ether and a four- membered and/or five-membered dimethylsiloxane (D) are mixed together to obtain the titled ink. When this ink is put into a ball point pen and writing is done, a clear handwriting can be obtd., which can be easily erased by a desensitizer composed of a polar compd. |
