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东芝（Ｔｏｓｈｉｂａ）公司研制了一种“脱色”油墨，只需将印刷品加热，便可脱去其上由这种油墨形成的字迹。这一成果大大有益于办公室纸张的回收，既节省了办公用品的开支，又省了废纸处理的麻烦。这种油墨中有一种秘密组分——不含碳黑的染料。碳黑是大部分油墨的重要组分?
Toshiba has developed a “decolorizing” ink that simply removes the writing on it from the ink by heating the print. This result greatly benefits the recovery of office paper, which not only saves the expenses of office supplies, but also saves the trouble of waste paper processing. There is a secret component in this ink - a dye that does not contain carbon black. Is carbon black an important component of most inks?