Tokyo stocks opened lower Friday on overnight falls in the US market, the dpa reported.
The Nikkei 225 Stock Average dipped 74.03 points, or 0.56 per cent, in morning trading to 13,050.96.
The broader Topix index of all first-section issues was also down 10.96 points, or 0.87 per cent, at 1,247.85.
On currency markets at 9 am (0000 GMT), the dollar was quoted at 109.33-38 yen, down from Thursday's 5 pm quote of 109.44-46 yen.
The euro was quoted at 1.5311-16 dollars, down from Thursday's 5 pm quote of 1.5465-67 dollars, and at 167.45-50 yen, down from 169.26-30 yen.