Digital proofing is developed with the development of CTP direct plate-making technology and is an indispensable link in the digital workflow. Of course, digital proofing is not limited to the specific link of "printing proofs". It is a specific application of the core technology of color management. It is based on color management and cannot be separated from color management technology. This article combines EFI digital proofing software to describe the color management process of the printer, which can achieve the matching of proofing and printed drafts. 1. What is digital proofing? Generally speaking, the publisher or other customers only formally start to print the prints required by the customers after obtaining the proofs provided by the printing house and signing for confirmation. In this process, the printing factory or proofing company based on the film or electronic files provided by the plate making company, the process of making printed samples is called proofing. The customer checks the layout design and printing quality of the printed sample and signs to confirm that the sample can be used as the basis for printing. This process is called signing. Digital proofing is based on the color rendering range of the color of the printed matter and the same RIP data as the printed content. The digital proofing equipment is used to reproduce the printed colors and the process of making proofs according to the actual printing conditions of the user. In theory, if the color gamut of the digital proofing device is larger than the printing gamut, it can be controlled by software to convert the color space between the output devices, so that the digital proofing effect simulates the color effect of the print output device, that is, the color management process of the digital printer. Digital proofs instead of traditional proofs. At present, the digital proofing system is composed of digital proofing output equipment and digital proofing control software. The digital proofing output device refers to any color printer that can output digitally, such as a color inkjet printer or a laser printer. But at present, most of the printing speed, format, screen method and product quality that can meet the requirements of publishing and printing are large-format color inkjet printers; digital proofing software such as EFI digital proofing software system, screen digital proofing system, Founder digital proofing system, etc. Wait. [next] Second, color management Color management is to scientifically and digitally correct various devices and record the color characteristics of the device in the "characteristic file", so as to obtain predictable colors on the device and reproduce the colors in different output environments. under. This requires the establishment of a set of objective rules for color communication between devices, so as to solve the problem of ensuring the consistency of color transmission in the entire printing system. It is precisely because the color management system provides the possibility of keeping the colors consistent between different devices and using different raw materials. Digital proofing can replace traditional mechanical proofing and become a new type of proofing. Therefore, digital proofing is a specific application of the core technology of color management. It is based on color management and cannot be separated from color management technology. There are three parts involved in color management: device calibration, device characterization, and color conversion. â‘ Equipment calibration. Refers to the standardization of the color characteristics of the device, which can produce predictable colors from a specific color input value. Usually, in order to compensate for the aging of the equipment or changes in other factors, the equipment must be calibrated regularly. â‘¡ Characterization of equipment. Each device should have its corresponding color characteristics. The color characteristics of this device can be recorded through the creation of a "characteristic file" through the cooperation of some software and hardware. Device characterization is to create an "ICCProfile" that describes the color characteristics of the device. â‘¢Color conversion. When the same image is output on different output devices, it will produce different effects, because the color gamut size of different devices is different. When we want to set the color of device A and transfer it to device B for output, we need to use the "feature file" of device A to perform color conversion and matching through color management software to find the best color performance. the pp case use to pack the cd-r,dvd-r and others ,it is ok and good pp case ,pp box ,pp cover Shantou Yupeng Cdian Industry Co.LTD , https://www.headsetswireless.com