Unveiled at drupa last year, the RotaJET 76 has made another appearance, this time at the Hunkeler Innovation Days in Switzerland. The RotaJET 76 shown in Switzerland has optimized ink feed, ink system, screening and colour management. A new rewinder and a new, even more efficient IR/hot-air drying system – both in-house developments from KBA, were also shown.
KBA attributes an important share of the machine’s improved print quality to its newly developed polymer-based pigment ink: RotaColor. Compared to conventional inks, it significantly reduces the capillary effect (penetration of the pigments into the paper), and that translates immediately into exact print and reduced print-through. KBA is the first manufacturer to use the new polymer-based ink in a high-volume inkjet system.
According to the KBA experts, the new ink extends the printable range of untreated papers and offers considerable potential for further quality advances and cost savings in the future. “We have kept the promises we gave to those interested in the press at drupe,” said Project Manager Oliver Baar. “The KBA RotaJET is now well prepared for daily print production.”
For its entry into the digital print market, KBA will at first be focussing on the target segments books, direct mailing, manuals, advertising, newsletters and newspapers. The live demonstrations of book production and a daily exhibition newspaper with original content from the “Neue Luzerner Zeitung” were among the highlights of the show. The book sections were produced reel-to-reel on the RotaJET and then combined with ready-printed offset covers on a Hunkeler finishing line. The finishing of the exhibition newspaper was also handled by post-press systems from Hunkeler.