Preheating machine (ink roll heating, ink roll preheat) is designed to preheating the hot ink roll and type holder before use. in this way, it save a lot of downtime and improve the efficiency for the customer.
There are two kinds:
one is designed to preheat two hot ink roll at the same time, here is the picture:
The other one is designed to preheat one hot ink roll and one type holder at the same time, here is the picture: