Web Offset Presses -- Spinning a Better Web
To address this situation, Komori has concentrated its resources to develop the System 38S, its new 16-page web offset press. The System 38S affords the quality of a single-diameter design, offers a full job changeover time of less than seven minutes and boasts 50,000 iph maximum printing speed.
The System 38S is equipped with Komori's high-performance inking system with advanced interface. In addition to one-step register adjustment, color matching and fold adjustment, KHS-AI self-learns user data, allowing it to function as a total control system.
A number of features have almost become standard requirements on today's web offset presses, points out George Sanchez, director of sales and marketing, web presses, for Mitsubishi Lithographic Presses (MLP U.S.A.) These include shaftless drives; fully automatic or semi-automatic plate changers; fully automatic folder changeovers; CIP3/4 interface between the press, prepress and postpress operations; and faster and easier format changeovers, such as tabloid to magazine to digest to flat sheets.
"Web printers are very focused on systems that fit within their plant workflow in order to maximize productivity and profitability," Sanchez contends. "For the foreseeable future, return-on-investment (ROI) and value-added services will dominate equipment decisions. Material waste, time on press and system integration will continue to be critical issues that new technology must address."
To meet the demands for computer integration and networked production, Mitsubishi Diamond Series web presses are designed to be a seamless component in a digital workflow, Sanchez says. For instance, the ability to use CIP3/4 data allows for faster color settings and reduced color correction during makeready. The Diamond 16 MAX (short for Multiple Advantages and Expertise) series commercial web press can print heatset signatures up to 16 pages in a single-web configuration at speeds up to 1,700 fpm.
Another issue, brought up by Erik Rehmann, KBA North America's marketing manager for commercial and rotogravure presses, is that price competition among printers and pressure to reduce costs are becoming more acute.