ichi Life Research Institute. July's production is expected to slip 0.2 percent, better than the 1.2 percent drop projected a month ago, and August's output is expected to rise 1.9 percent. Also, the ratio of inventories to shipments decreased 3.8 percent on month, a sign that goods are being sold. Cheered by the upbeat news, investors lifted the Nikkei 225 index 0.26 percent to 11,888.96 points, its highest finish since April 8. But not all the news this week was positive. Spending by Japanese households headed by wage earners _ perennial weak spot in the economy _ rose a smaller-than-expected 0.1 percent in June from a year earlier. June's figure marked the first rise in three months. Wage-earner household spending is an important gauge of personal consumption, which accounts for roughly 55 percent of Japan's gross domestic product. Weak consumption has long been blamed as a central factor in Japan's decade-long economic slump. Also, Japan continues to struggle with deflation, or falling prices, with reports showing that Tokyo's core consumer price index _ which excludes volatile food prices _ fell 0.4 percent in July from the same month a year ago. That extends a string of year-on-year declines dating back to October 1999, the government said. The nationwide core consumer price index, which the Bank of Japan uses as a benchmark for its current ultra-easy monetary policy, fell 0.2 percent in June from a year earlier.