Why Excessively Low Inflation Can Damage Economies

In explaining its surprise move Friday to inject more stimulus into the financial system, the Bank of Japan cited one main factor: Prices that are too low.

BOJ to hold fire but exports seen as a concern

(Reuters) - The Bank of Japan is expected to maintain its massive monetary stimulus on Tuesday on a view the economy can weather a sales tax increase in April without extra support, although there is expected to be some concern about weakness in exports.