Also Goin spread to Buke (samurai families), and during the Sengoku period, busho (Japanese military commanders) used seals such as 'Kokuin' (a seal with black ink) and 'Shuin ' (a seal with red ink) as official seals.
またこの号印の影響が武家に及び、戦国時代(日本)の武将たちが公用印として「黒印」や「朱印」と呼ばれる印章を使った。