In addition, not to mention the smoke from mineral materials, the making of ink sticks using smoke from burnt pine and plant-derived smoke was mechanized, and as a result the ink black became monotonous and the luster deteriorated.
さらに、鉱物性煙はもちろんだが、松煙や油煙の植物性煙の製煙も機械化され、墨色が単調になり、光沢の品位も下がった。