Adobe released open source font “Source Han Sans”. It provides 3 languages including Japanese.
Released in Apache 2.0 license, it can be downloaded from Adobe Typekit,GitHub, and SourceForge for free.
Source Han Sans’s design concept is “Simple and easy to recognize for small devices.”
Not only for paper media, but also for multi-device.
http://ascii.jp/elem/000/000/914/914327/