Ichi Life Research Institute. He forecasts exports and production to further recover in the July-September period. Traders see few signs of overheating and little to disturb the upward momentum until the Sept. 11 parliamentary elections. Foreign investors eager to buy Japanese shares on rekindled optimism for the country's economy helped push the yen higher against the dollar in early trading by buying the currency to invest in Japanese markets. But the dollar reversed its losses by midafternoon. In currency trading, the dollar bought 109.88 yen on the Tokyo foreign exchange market at 5 p.m. (0800 GMT) Tuesday, unchanged from its level late Monday and above the 109.76 yen it bought later that day in New York. The greenback traded between 109.60 yen and 110.10 yen in Tokyo. The euro rose to US$1.2234 from US$1.2183 late Monday. The yield on the 10-year Japanese government bond fell to 1.4450 percent, from 1.4700 on Monday. Its price rose 0.21 to 98.75 points.