The Bank of Japan should consider whether to stop pumping extra cash into the banking system by evaluating trends in corporate financing and the economy, BOJ Policy Board members said last month.

They said whether to keep buying corporate debt from banks and providing them with unlimited loans after Sept. 30 "should be determined based on close examination of developments in financial markets and corporate financing," according to minutes of their May 20-21 meeting published in Tokyo Friday.

BOJ Gov. Masaaki Shirakawa said this week that the central bank will decide how to deal with the measures "by the end of September in a predictable manner to market participants." The Bank of Japan said this week that the country's worst postwar recession is easing as fiscal stimulus measures worldwide spur demand and companies increase production.