Color is the core of printing and reproduction work. Today, printing companies are paying more and more attention to the improvement of color management methods for printed products. At present, the increasingly popular certification behavior of printing enterprises is a beneficial exploration for enterprises to improve the quality of color reproduction. Among various certification systems, the most concerned is GRACoL's G7 certification system.

   Up to now, more than 150 enterprises in the mainland have obtained the qualification of G7 recognized enterprises, and the application of printing standardization has also begun to penetrate into small and medium-sized enterprises. These certified companies are mainly offset printing and pre-press companies, and have achieved G7 Targeted or G7 ColorSpace levels at the same time.

  ColorTell provides printing G7 certification service

  Introduction to G7 method and G7 certification

  G7 process method introduction

  GRACoL is an American lithographic offset commercial printing specification organization. It is a sub-committee of IDEAlliance responsible for offset printing technology research. G7 is a new set of printing standardization correction, detection and control created by the organization. So strictly speaking, G7 is a process control method. This method focuses on the control of neutral gray and emphasizes the effect of visual gray balance. Among them, G represents gray value calibration, and 7 represents the 7 basic colors defined in the ISO12647-2 printing standard: cyan, magenta, yellow, black, red, green and blue.

This method can not only be applied to the calibration of printing equipment, but also can be used for other CMYK output devices, such as inkjet printers, laser printers, etc.; and when using the G7 method for general calibration, there is no adjustment to paper, ink, and screen lines. Special requirements for counting, printing and output systems.

  G7 Certification

G7 certification refers to the use of the G7 calibration method to calibrate the printing system. Under the condition that the properties of the paper and ink used and their tolerances must meet the requirements of ISO12647-2, the entire printing process will finally meet the standard requirements of ISO 12647-2. , so as to obtain the certificate of "G7 certification". The certified printing company information will be included in the G7 database for inquiries, so as to provide printing companies with a wider range of customer trust and customer sources. G7 certification can be divided into different levels according to the existing resources and conditions of customers