| 摘要 |
PROBLEM TO BE SOLVED: To easily vanish an image after formation on paper, to stably maintain the vanished state and to effectively reuse the paper after vanishment by using a vanishing agent consisting of high amorphous phase separation inhibitor and a low amorphous phase separation inhibitor. SOLUTION: A vanishing agent consisting of a high amorphous phase separation inhibitor and a low amorphous phase separation inhibitor is used. The high amorphous phase separation inhibitor is preferably a cyclic sugaralcohol and the low amorphous phase separation inhibitor is preferably a >=5-membered nonarom. cyclic compd. having hydroxyl groups other than cyclic sugaralcohols or a deriv. of a cyclic sugaralcohol. A developer is preferably used by 0.1-10 pts.wt., particularly 1-2 pts.wt. per 1 pt.wt. color developing compd. The vanishing agent is preferably used by 1-200 pts.wt., particularly 10-100 pts.wt. per 1 pt.wt. color developing compd. |
