朱肉

1. Origins, structure, and basic meaning

• Structure: 朱肉, read しゅにく, is the red seal ink applied to a seal before stamping.
• Basic usage: In 契約書に印鑑を押す前に朱肉を付け直した。, the seal is re-inked before being stamped on a contract.

2. Common pitfalls and similar expressions

• Ink and seal
  • 朱肉 is the inking material, while 印鑑 is the seal used to stamp. The sentence about 朱肉の表面 drying describes the surface of the ink kept under a lid.