Bank of Japan board members discussed the possibility of further interest rate hikes if a weak yen continues to accelerate inflation, a summary of their opinions at a policy-setting meeting in April showed Thursday. Some members also underlined the need to reduce the BOJ’s buying of Japanese government bonds, a step toward eventually trimming its expanded balance sheet after years of powerful monetary easing to achieve its 2 percent inflation goal. The focus of the April 25-26 meeting was on how to address the rapid weakening of the yen. The Policy Board left monetary policy unchanged, with sh…