Digital impositioning and management of the CIP3-PPF workflow
The Signastation plays an important role in prepress,
putting together the individual pages into a printing form and at
the same time generating the CIP3-PPF (Print Production Format)
data required for the seamless processing of the job by press and
postpress. At the DRUPA exhibition, Heidelberger Druckmaschinen AG
(Heidelberg) will be demonstrating the current Version 6.0 of its
Signastation imposition software, which can be used in different
workflows and for different RIPs to process both PDF and
PostScript. It also has new features for packaging printing (see
special "Signapack" press release).
When the Signastation is working in the Prinergy workflow
management system, it generates job tickets containing all the
information about the imposed sheet including all its control
marks. If a change in printing presses means that last-minute
modifications are required, the Signastation quickly and reliably
performs all the necessary corrections in its interactive dialog
with the workflow system.
Pages can also be exchanged until shortly before output in
the Delta workflow, and the Signastation carries out impositioning
directly using ready-interpreted Delta lists. In order to save
time, the Delta lists can be compiled directly on the output system
using the SignaMerger. And it goes without saying that the
Signastation also controls PostScript RIPs and - where necessary
for older RIPs - can even impose PDF jobs and convert them into
PostScript files for RIPping. This means that PostScript RIPs
remain available to the PDF workflow right up to the point when the
full sheet is created.
Flexible, automated operation with permanent visual control
The library in the Signastation contains planning sheets for
popular printing presses. The appropriate imposition layout is
automatically generated complete with page layout and numbering
from the integrated folding sheet library, to which individual
folding plans can be added at any time. It is also possible to
generate one's own imposition layouts using the layout editor
or to impose them manually on the monitor. Obviously all these
processes take place under constant visual control.
There is a whole range of functions to make life easier,
including language versions generated in additional colors which
can be incorporated into the black separation if desired. Creeping
or bottling allowances are automatically calculated for the whole
piece of work. In-house elements can be added at any time to the
selection of cutting, folding, color and collating marks and
characters available.
The Signastation uses the OPI function to reduce data
volumes. This means that low-resolution data is used for the
imposition process and then exchanged for the high-resolution data
just before output onto film or plate. The LM-Includer or
SignaMerger compiles the sheet just prior to output. Up until that
point, very small files containing the job name and page status of
the signature are used. This takes a considerable amount of strain
off the network and enhances productivity.
CIP3-PPF information for communication with press and
postpress
A whole range of information from the prepress production
stage is useful to the next stages in the processing workflow -
i.e. printing and finishing. Sharing this information can cut
subsequent work preparation time. It includes information for color
control systems, automatic register control systems and folding and
cutting machines. The Signastation bundles the information, adds
administrative data such as job name and sheet number, and makes it
available as CIP3-PPF.
The Prepress Interface system from Heidelberg evaluates the
PPF and passes it to the printing press, where it is used for
presetting ink zones, setting automatic register control and
controlling and regulating the printing press. The PPF is
transferred online for setting up the folding machine and
programming the cutting machine.
The advantages of this method, which spans different systems
and production stages, are clear - makeready times and waste are
reduced to a minimum, and errors and duplications in job
preparation can be avoided. In times of shrinking print runs and a
growing volume of individual jobs, the CIP3 workflow managed by the
Signastation is the perfect way to harness additional
rationalization potential.
For further information:
Heidelberger Druckmaschinen AG
Thomas Fichtl
Tel.: +49 (0)6221 92 47 47
E-mail:
thomas.fichtl@heidelberg.com