With mint, you're not using a typical ink pad. In fact, you're not using a pad at all. The silhouette mint uses 5 ml bottles of ink that you apply to your stamp. The stamp will then absorb the ink, enabling it to stamp approximately 50 images before the stamp dries up. After that, just add a few more drops of ink and you're ready to go again.
https://www.silhouetteamerica.com/shop/MINT-INK-LAV