A falling yen tends to be viewed as positive for Japanese exporters and corporate profits, and helped lift the Topix (.TOPX) 0.5 percent to 1,305. Despite market concerns over China’s economy, stocks there have been buoyed by talk of more stimulus and reform measures. Investors were now eagerly awaiting the launch of new products by Apple (AAPL.O) later on Tuesday in a much-hyped event at Cupertino, California.