water-based inks specially designed for Automatic Rotary (Carousel) Printing Machine, and the Series consist of White 301 W-10, Mat 301M-3, and Clear 301C-9. Ordinary water-based inks have some difficulties during a process on Automatic Rotary (Carousel) Printing Machine such as screen clogging, viscosity increase of inks by heat and particularly the ink build-up on a screen bottom during wet on wet print. 301 Series can prevent these problems. They can be used for a long-time continuous printing operation with much less screen-clogging and ink-build-up on a screen bottom. Moreover, they can obtain soft hand feeling and excellent fastness without tackiness on the print surface. 301 Series of MATSUI inks are eco-friendly products without containing formaldehyde, APEO nor Mineral Spirit, and it is certified by Oekotex Standard 100; so called ECO Products.