Proofing
Legal Proofing
Compliant with ISO 12647 (Fogra), our proofing line allows us to deliver certified contract proofs.
ISO 12647 standard
Harmonise and streamline trade and production in the graphics industry.
ISO 12647, entitled "Graphic technology - Process control for halftone colour separation, proofing and professional printing", brings together all the specifications and recommendations considered necessary to achieve quality printed work by the ISO (International Organization for Standardization) technical committee on graphic technology (ISO/CT 130).
Good to know
This document, distributed in France by AFNOR (www.afnor.org), is structured in seven distinct parts. It covers the different professional printing processes: Offset (sheet-fed and web with heatset), web without heatset (Coldset), Rotogravure, Screen printing, Flexography and Digital printing.
For each of these printing systems, the ISO 12647 standard specifies different characteristics to be met.
For each of these printing systems, the ISO 12647 standard specifies different characteristics to be met.
The controlled proof is at the heart of the standardised printing production process. It is the contractual basis of the relationship between the various parties involved: end customers, communication agencies, graphic designers and printers; it is both a precision tool and a judge of peace.
Digital proof
The first quality of a digital proofing system is its repeatability (its stability over time). The system must also have a gamut wide enough to contain that of an offset press printing on coated paper. Finally, the printer must be able to finely reproduce a wide range of colour shades. Indeed, the size of the gamut is not everything, it is also necessary to be able to reproduce the infinite number of colour tones it contains.
Today, inkjet printing technology has taken over, producing high quality, stable, wide gamut prints at a very reasonable cost.
Controlled proof
Taking this ISO 12647-7 standard as a reference, Fogra in Europe and IDEAlliance in the US each publish an ISO 12647 proof control system. These processes are based on the use of control charts known as "Ugra/Fogra Media Wedge CMYK" and "IDEAlliance ISO 12647-7 Digital Control Strip" respectively.
A validated proof must include a control chart so that anyone can check the colorimetric values. The proof always simulates a standard printing reference: Fogra 51, GRACoL2006, SWOP2006... The control of the chart samples consists of checking that their colours correspond to those of the simulated standard printing conditions, according to the tolerances dictated by ISO 12647-7.
This conformity check is carried out with a spectrophotometer. For the test to be certified, the values checked must be within a narrow tolerance expressed in ∆E. For the Media Wedge V2, these values are :
Average ∆E: ≤ 3
MAximum ∆E: ≤ 6
Media ∆E: ≤ 3
Version 3 of the Media Wedge also allows the average ∆H (≤ 1.5) to be checked, i.e. how much of the colour drift is due to hue (not luminance or saturation).
The media wedge check should result in a label indicating the values read in relation to the acceptable tolerance according to the standard.
Good to know
To put theory into practice, Quadrilaser relies on the best technology available today: the GMG software suite for proofing and the latest generation of Epson printers. This guarantees that the quality of our proofs is impeccable and verifiable.
The GMG proofing system: a proven professional solution
The Proof Contro softwarel
GMG ProofControl, the proof quality control software, is a key element for networked and standardized production. You can check the color consistency of your proof in seconds, simply by integrating the target values of international standards. With GMG ProofControl, costly printing errors and complaints are a thing of the past. GMG ProofControl is an indispensable quality control tool for anyone who has to communicate the quality achieved to third parties.
The GMG Colorserver software
GMG ColorServer is an intelligent solution for the efficient conversion of color spaces from one standard to another. It enables simple, fast, economical and universally accessible data optimization for all printing processes. PDF files or pixel data are automatically separated, converted or reseparated. GMG's DeviceLink approach avoids classic limitations, such as those that exist with ICC. In addition, the resolution is adjusted and the sharpness is processed according to the output. This product enables you to face the future challenges - the transition from a craft to industrialization and automation of processes.
GMG Proofmedia
High quality proofs can only be produced if all the components of the system are closely compatible and integrated. The print media is essential as it helps determine the extent of the printable colour space and the repeatability of the proofs. GMG substrates are manufactured and tested to the stringent quality requirements of contract proofing. They offer high paper tone accuracy, excellent drying and a particularly high ink limit. Quadrilaser works exclusively with GMG-certified papers, a guarantee of quality for proofing.
Measurement table X-Rite i1io 2
Combining world-class hardware and software components, i1Publish Pro 2 offers imaging professionals the most comprehensive colour management solution on the market.
- The i1Pro 2 is the most accurate and advanced characterisation device available today. As such, it offers an unprecedented level of accuracy, reliability, flexibility and user-friendliness, as well as a full set of professional-level features, including the latest developments in ISO standards.
- Logiciel i1Profiler for monitors, projectors and printers RVB/CMJN+.
- ColorChecker camera calibration software and chart produce exceptionally stable custom camera profiles for Raw streams, even in environments with artificial or unusual light sources.
- PANTONE® Color Manager. This colour palette creation and colour matching software makes it easy to capture and manage your spot colours and keep your PANTONE libraries up-to-date.
The i1iO 2 table extends the power of the i1Pro 2 device by adding automated hands-free test chart measurement capabilities.
Our proofing tools
In order to achieve the best possible colour rendition, Quadrilaser relies on proven EPSON technology through its large format inkjet machines. We have a fleet of the latest generation machines, in particular a 10-colour Epson P9000 printer, with an extremely wide gamut in order to simulate pantone colours, and an 8-colour Epson P8000 printer offering high fidelity printing.