TOKYO - The dollar firmed in Asia Wednesday, a day after the Bank of Japan unveiled monetary easing measures to boost its economy, help fight deflation and reduce the surge of the yen, dealers said.

The US unit was quoted at 86.78 yen in the Tokyo morning trade, compared to 86.66 yen late Tuesday in New York.

The euro fell to 1.5076 dollars from 1.5082, but rose to 130.93 yen from 130.72.

Japan's central bank, under pressure to help boost a fragile recovery in the world's second-largest economy, said Tuesday it would pump more than 100 billion dollars into the financial system.

The announcement sent the yen lower against the greenback, but only temporarily, as market players questioned its long-term impact, dealers said.

"The measure, announced only independently by the Japanese central bank, would not shift the overall market trend of a weak dollar," said Masatsugu Miyata, forex dealer at Hachijuni Bank.

"The Bank of Japan finally took one step forward to quantitative easing, but the impact is limited," he added.

The central bank, in a hastily announced extraordinary meeting Tuesday, said it would keep its interest rate at a rock-bottom 0.1 percent while pushing about 10 trillion yen (114 billion dollars) into the financial sector.

Hachijuni's Miyata said investors continued monitoring the credit fears in Dubai and had an eye on a US job report to be released later this week.

"If some positive incentives come up in the United States, the weak dollar trend may turn around, but it is only 'if' for now," he said.