have a built-in ink pad. A patented spring device automatically re-inks the die with your image between each impression. In slow motion, you can watch the rubber stamp as it flips up and then down against the ink pad – with each impression. In general our self-inking stamps use a water-based ink. Even though they typically need to be re-inked more than pre-inked stamps, the re-inking procedure is remarkably easy and mess-free.
also carry their own ink. But, pre-inked stamps do not use a flip-around device – just a die that is saturated with ink. The ink seeps through the die (which is also patented) at a controlled rate. Many find that a self-inking stamps give a better quality of impression than found with a self-inking stamp.