noun
ink pad; stamp pad
Refers to the inked pad used with personal seals (hanko) or rubber stamps. Often a vermilion paste-like ink in a small case.
印肉が乾いてきたので、新しいのを買わなければ。
The stamp pad is drying out, so I need to buy a new one.
朱肉の代わりに黒い印肉を使うこともある。
Sometimes a black ink pad is used instead of a vermilion one.