Screen USA - 4/26/2006
At ON DEMAND Expo: Screen's New Generation of Direct Imaging Press
TruePress 344 Features Latest Innovations in Printing Plates and Laser Imaging
ROLLING MEADOWS, Ill. Advanced automation and processless plate technology are two unique features
that Screen (USA) will emphasize when it demonstrates the four-color TruePress 344 digital offset press at
On Demand Expo. The TruePress 344 is a new generation of direct imaging (DI) press, incorporating innovative
technologies in chemistry-free plates and high-speed laser imaging. It expands the range of tools that printers with
vastly different capabilities have at their disposal to print premium-quality, short-run jobs in full color.
Offset color printing
The TruePress 344 has a maximum sheet size of 13.4 x 18.5 inches and a maximum imaging area of 13 x 18.1
inches. The press utilizes high-speed 830 nm multi-array laser diode (MALD) imaging technology to expose
processless plates. With a top printing speed of 7,000 sheets per hour, it makes short work of everything from
simple business cards and envelopes to four-color postcards, flyers, brochures and posters. The black plate is
easily replaced to accommodate variable text needs, while ensuring accurate registration and fit.
The TruePress 344 employs the conventional offset process, complete with traditional dampening system, wet
offset inks and paper stock. Plates can be imaged at 2,400 dpi resolution using screen rulings up to 175 lpi. In
addition, the Spekta 2 screening method enables printers to enjoy the benefits of AM/FM hybrid screening in
their digital printing solution.
The TruePress 344 is designed so one operator can manage the entire operation from workflow to printing. The
low cost of printing on a wide range of substrates increases the profit margin per job.
The TruePress 344 brings offset quality to instant print shops and allows instant printers to expand beyond toner-
based digital technologies. For smaller print companies currently offering one-color and two-color printing, it
provides an affordable entry into four-color work. On-demand printers needn't sacrifice print quality or substrate
flexibility. In-plants benefit from low maintenance, ease of use and limited training requirements. Adding the
TruePress 344 can enable large-format commercial printers to fulfill the gamut of work available from their
customers, even 100- to 5,000-sheet runs, cost-effectively.
In just over five minutes, the press is ready to start the next job. To activate a job changeover, the operator
simply selects the new job at the central control console. The rest of the procedure is automated. New plate
material is positioned on the cylinders while the blanket cylinders are being cleaned. All four plates are imaged
simultaneously. Within a few revolutions of the press, the dampening solution removes the unexposed emulsion
from the plate and the press is ready to print. The operator can recall and select preset data for the next job
while the press has started imaging the plates for the current job.
Enhanced quality control
An automated print quality control system - TrueFit Advance - provides real-time analysis and feedback of the
ink-water balance during printing. TrueFit Advance measures ink densities and dampening solution levels on
every sixth sheet as it comes out of the TruePress. Current density readings are compared to target levels.
Adjustments for deviations from the original calibration occur immediately. The press maintains a consistent ink-
water balance throughout the print run. Optimum print quality is reached within 30 to 50 sheets, reducing materials
Inline dryer option
Ever-shorter deadlines increase the demands on the production process. The need to print on the reverse side of
the sheet or pass the print job immediately into the finishing department means that sheets must be dry soon after
printing. Screen offers an optional inline infrared dryer capable of accelerating the drying time.
Front-End workflow independence
Trueflow Rite TP, the entry-level workflow management system developed for the TruePress 344, connects
directly to the press. Trueflow Rite TP contains features that have been developed to prepare files and related
information to create output files to guarantee the best performance from the press. The press accepts 1-bit TIFFs
as input data, and also works with any RIP system that outputs 1-bit TIFFs.
Screen (USA) will demonstrate the TruePress 344 in booth #3200 at On Demand Expo, May 16-18 at the
Pennsylvania Convention Center in Philadelphia.