| After the Genroku era (from 1688 to 1703) production of copper began to decline and the bakufu was running out of copper for export, which was one of the reasons the bakufu strengthened the control of mintage. |
また元禄年間を過ぎた頃から銅の産出に陰りが見え始め、輸出用の御用銅が不足し始めたことも鋳銭事業に対する幕府の管理体制を強化させた一因である。 |