The Nikkei 225 Index rose 608 points or 0.87 percent on Wednesday to close at 70671 points.
Leading the gains are Sumco (17.30%), Taiyo Yuden (13.33%) and Screen Holdings (9.32%).
Top losers were Furukawa Electric (-8.25%), J Front Retailing (-8.16%) and Sapporo (-7.96%).