Mainstream 80 features proven technology, unique
Better print quality, increased layout versatility, faster
productivity and more economical operation are the press
characteristics that can make newspapers of the future more
compelling and more competitive. They are also the features that
define the Mainstream 80. Heidelberg's newest newspaper press,
unveiled for the first time at drupa 2000, incorporates the
company's proven gapless blanket technology to open the door to
a whole new way of printing newspapers.
The Mainstream 80 is a shaftless, double-width press designed
for straight printing at speeds up to 80,000 copies per hour. It
features a one-page-around by four-pages-across plate cylinder
configuration (1x4) and one-around blanket cylinders (1:1
plate-to-blanket cylinder ratio).
"Modern newspapers are faced with competition from an
unprecedented array of alternative media," according to
Heidelberg Web Systems president Bob Brown. "The Mainstream
provides a combination of speed, high print quality, versatility
and economy that can make newspapers more competitive as well as
more attractive to both readers and advertisers."
The Mainstream can more than double the output of a
single-width, eight-page press running collect and match the output
of a conventional two-around 16-page double-width press. The 1x4
configuration requires 50 percent fewer plates when compared with a
conventional double-width press, a benefit that reduces plate costs
as well as the time necessary to make and mount plates.
Gapless blankets, the defining feature of Heidelberg's
Sunday Technology, provide the dynamic stability that enables the
Mainstream to achieve high print quality at such high speeds with
the double-width, one-around plate and blanket cylinders. The press
is available in web widths up to 1,600 millimeters (63 inches).
"Tubular Sunday Press blankets eliminate the gap-related
vibration and disturbances that occur when the gaps meet in other
presses," Brown explains. "This proven technology allows
the Mainstream to print up to 80,000 copies per hour while
combining the economy of a 1x4 plate cylinder, the print quality of
gapless blankets and a 1:1 plate-to-blanket cylinder ratio, and the
layout versatility of two-page jumps and uneven sections."
The gapless blankets eliminate the need for bearers and
blanket packing, last longer than conventional blankets and can be
changed in as little as 60 seconds with the web still in the press.
Heidelberg introduced Sunday Technology in 1992, and to date more
than 1,600 Sunday Press printing couples have been sold throughout
In addition to gapless blankets, the Mainstream features two
other "industry firsts" designed to speed up 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 page 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 individual print run.
Independent, synchronized AC motors on the Mainstream
facilitate flying edition changes. Rotary and jaw folders
accommodate page counts between 8-96 in two-page increments as well
as sections with unequal page counts. The folders are streamlined
for straight printing, with none of the moving cams necessary to
The new Heidelberg Contiweb FD paster, designed for the
Mainstream, features two motorized split arms, automatic chucking
and centering capabilities and an auto web-up system integrated
with the press. An integrated infeed with motor-driven pull roll
and dancer feedback control is designed to ensure constant web
The Mainstream 80 at Drupa will be installed in a different
configuration at publisher Dansk AvisTryk's plant in
Copenhagen, Denmark following the show. "The demand for
high-quality four-color newspapers continues to grow in Denmark,
and we will utilize the new press to meet this demand,"
according to the company's chairman, Sven Togsverd.
Dansk AvisTryk prints 1.5 million four-color newspapers a
day, including some of Denmark's largest domestic dailies.
Togsverd, who saw the press print a specially-designed form during
testing in Durham, New Hampshire in late 1999, says print quality
and speed factored in the purchase decision. He expects the new
press to expand domestic and export market opportunities.
"Before developing the Mainstream, we spoke to
publishers around the world to determine their production
requirements, and they told us they wanted better print quality,
more color and more speed to accommodate narrower print
windows," Brown explains. "They also emphasized the need
for more economical workflows, and they were especially interested
in advanced targeting and versioning capabilities. The Mainstream
is a press that addresses all of these requirements."
For further information:
Heidelberg Web Systems
Tel.: +33 (0)344 29 40 52