GMG DotProof 4.5

Create digital contract proofs from screen data

More than a continuous proof
Colour-accurate continuous proofs are not always sufficient when a real contract proof is required. In many cases, a proof is needed that not only reproduces colours accurately, but also shows the halftone dot pattern. GMG DotProof® provides that capability.

Benefits of a halftone proof
The colour accuracy of halftone proofs created with GMG DotProof is identical to the colour accuracy provided by the awardwinning GMG ColorProof solution. DotProof, however, produces accurate colour that includes halftone screening from the final bitmap data generated by the imagesetter or CTP RIP. This guarantees absolute data integrity since screen angle, screen ruling and dot shape are preserved in their entirety.

High throughput thanks to optimal data processing
The DotProof module is an option for GMG ColorProof o4. It allows bitmap data to be processed directly for proofing via inkjet printers. GMG DotProof uses algorithms specially developed by GMG for scaling halftone screened data to the inkjet printer resolution. This process, together with GMG colour management, is carried out “on the fly” when printing, allowing very high throughputs and fast printing speed.

Simulation of tone reproduction curves and dot gain
DotProof provides the only means of simulating individual tone reproduction curves and dot gain for a wide variety of different presses. The DotProof module’s MX5 profiles take both the imagesetter or CTP curves as well as the press dot gain characteristics into account during the proofing stage, allowing exact matches between press and proof.

Early recognition of moirés and trapping errors
Halftone proofs are vitally important for identifying problems such as moiré artifacts, incorrect trapping settings or interpretation errors in the imagesetter or CTP RIP before plates are exposed or the print process begins. Halftone proofs help users minimize the cost and time losses resulting from prepress errors. A colour-accurate halftone proof also allows the printer to adjust press setting quickly.

Perfect contract proofs with dot-for-dot reproduction
Unlike many competitors’ products, DotProof produces a genuine colour-accurate halftone proof that also meets contract proof requirements. DotProof is unique in that the colour management and bitmap output processes are run in parallel.
Colour information, dot gain, and halftone output are calculated “on the fly”, producing very rapid throughput. The result is a perfect contract proof with dot-for-dot reproduction on halftone screens up to 200 lpi, depending on the printer used.

Seamless integration into existing workflows
Since the bitmap used in the proof is generated by the imagesetter or CTP RIP, integration of the halftone proofing system into existing system environments is particularly important. GMG DotProof can be integrated into all relevant workflows. Sophisticated tools assist in this process, including one for parameterization of naming conventions.

Halftone proofs for commercial printers, newspapers and packaging printers
GMG DotProof is the solution for all businesses – from commercial to packaging printers to newspapers – that want to proof their 1-bit data. Halftone proofs produced by GMG DotProof are particularly useful for printing operations using coarse screening rulings where the halftone process plays a significant role in the final appearance of the image.

GMG DotProof Technical Data
The attached data sheet provides informations about the Hardware- and Software-requirements as well as an overview of DotProof product features.
GMG_DotProof_EN.pdf