Offset Printing--Pressing Ahead
Newly redesigned is the 29˝ Roland 200, a 13,000-sph press available in two- or four-color versions, that requires a small footprint. The press incorporates double-size impression cylinders, contact-free transferters and a new digital press control concept, which also saves space by integrating the control console into the delivery. The unitized design and new cylinder geometry will reportedly allow the 200 series to be more price-competitive.
Heidelberg required two complete halls and an adjacent building to display its comprehensive family of offerings. DRUPA served as the world debut for the Mainstream 80, Heidelberg Web Systems' newspaper press that incorporates its patented gapless blanket technology.
The Mainstream 80 is a shaftless, double-width press designed for straight printing at speeds up to 80,000 cph. It features a one-page-around by four-pages-across plate cylinder configuration (1x4), a 1:1 plate-to-blanket cylinder ratio and is available in web widths up to 63˝.
Besides gapless blankets, the Mainstream also featured two other "industry firsts" designed to speed makeready and improve folder performance. Omnipage, an automatic page recognition system, uses cameras mounted above the console to instantly identify newspaper pages when they are placed on the console. Omnipage can then automatically direct the control system to the corresponding pages within the press.
The second innovation, moveable lower folders mounted on transverse rails, allows the folders to be optimally positioned under the formers according to the web configuration for each print run.
Heidelberg Web Systems showcased the 24-page Sunday 2000, as well, which is also available in a 16-page format. The show model was a five-unit, single-web press running with the PCF-1 pinless folder. Like all Sunday Technology presses, it features gapless blankets. Aside from paper savings, they eliminate vibration-related defects such as bump streaking, doubling and web flutter. With its wider, six-pages-across configuration, the 24-page Sunday 2000 prints 50 percent more pages per cylinder revolution than a 16-page press—and with no additional manning requirements. The press also features semi-automatic plate changing, as well as automatic cylinder positioning and locking.