JAPANESE POLICE RECORD
Available. Japanese police certificates will not contain information about criminal convictions when:
1. The period of suspended sentence has ended;
2. The penalty of the crime was a fine, and the crime occurred more than five years ago;
3. The term of the prison sentence ended more than ten years ago; or
4. The conviction was vacated or the criminal was subject to a pardon or amnesty.
来源:http://www.criminal-records-search.com/order_net/form/japan.asp