Printing process control of color management

As we all know, the purpose of color management is to use a combination of software and hardware to automatically adjust and manage colors in the production system to ensure the consistency of colors throughout the entire process of input, display and output, and ultimately achieve the faithfulness of colors Reproduction (what you see is what you get). So, how to implement color management quickly and efficiently? The author believes that establishing a measurable and repeatable process control system, regulating the printing raw materials, related equipment and environment, and optimizing the data flow and information flow in the printing production process can achieve unexpected results.

1. Introduction to Color Management

1. Definition of color management Color management is an application technology that correctly interprets and processes color information. It is recognized as the most effective solution to achieve faithful reproduction of colors and obtain stable colors repeatedly. In the entire process of copying color graphics and text information, the color management system ensures the consistency of the color and text information from the color space of one device to the color space of another device under the premise of minimum color distortion .

2. Workflow of color management

The process of color management can be divided into four C: Calibration (Calibration), Characterization (Characterization), Conversion (Conversion) and Check (Check).

â‘ Calibration. This is the basic condition for good color management. It refers to adjusting each device such as monitors, scanners, digital proofers and printing machines to a standard state to ensure that it meets or is accurate to the manufacturer's specifications and maintains certain stability. Make sure that the color of its performance meets or is close to the usual standards. Calibration is the foundation and starting point of color management. Its purpose is to calibrate the device and allow it to run steadily. The stability of the device is the basic condition for color management. Therefore, calibration is extremely important in the process of color management.

â‘¡ Characterization. Refers to the input or output of standard color scales on calibrated equipment, and then measures these color scales to determine the color performance characteristics of the equipment based on the obtained data and establish a color characteristic file (IC CP rofile). The purpose is to establish the range of color expression of equipment or materials, and to record its characteristics in a mathematical way for color conversion. Characterization is an important part of color management and a prerequisite for color management.

â‘¢ Conversion. Refers to the conversion of the color of an image or other object from the color space of one device to the color space of another device. The purpose is to obtain visually consistent colors.

â‘£ Check. That is, the inspection and evaluation of color matching between various devices.

2. Printing process control based on color management

1. Control the stability of printing materials

The stability of the material is the prerequisite for obtaining high-quality printed materials. In the daily production process, it is of great significance to strictly control the stability of printing materials such as printing plates, developer, fountain solution, paper and ink, and to ensure that stable printing materials are implemented. The premise of color management. The quality of the original version directly affects and determines the quality of the printing. To produce a high-quality printing plate, we must first have a high-quality original as a guarantee. The configuration of developer and fountain solution should be strictly in accordance with relevant specifications and requirements, and their status should be regularly monitored. Paper and ink directly affect the quality of printing, so the regulation of the stability of paper and ink is particularly important.

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