Robot assembler work on cars during the assembly process at Nissan Motor Company's Kyushu Plant on November 23, 2007 in Kiyakyushu, Japan.

Japan's core machinery orders rose in September for the first time in four months, but companies forecast only modest gains in orders in October-December, a sign the economy's recovery from an an expected recession could be slow.

Core machinery orders, a leading indicator of capital expenditure, rose 7.5 percent in September versus the median estimate for a 3.3 percent increase, and followed a 5.7 percent decline in the previous month.