The investment, which also includes Fuji's XMF workflow, is part of a move to bring digital printing in-house for the Gillingham, Kent-based business.
This deal marks the first time Fuji's new Uvijet OC inks have been sold to a UK customer. According to Fujifilm, the inks are specifically formulated for optimum performance on corrugated materials.
STI Line operations director Dave Driver said: "The Uvijet OC inks will guarantee exceptional flexibility for us, so we can immediately proceed with the cutting and finishing stage, delivering finished products quickly."
Driver explained that STI was adopting digital print technology in order to better respond to a changing marketplace: "The increasing demand for short run products, as well as the importance of reducing lead times, has driven us in the direction of digital print.
The 3.1m-wide Onset S40i employs a six-colour inkset and operates at speeds of up to 560sqm/hr. The manufacturer states that it can print at a resolution of up to 1,000dpi.
"In the last few years the performance offered by this technology has grown steadily and now perfectly suits our requirements," said Driver.
STI Line supplies packaging and POS products for a range of sectors including the cosmetics and beauty market.