The principle of digital proofing
Digital proofing is an application system composed of digital color management software and professional color printers. There are currently three main principles and implementations of digital proofing color management:
The first is the use of ICC private color matching theory and technology, using a spectrophotometer, through the color matching of printed samples and printed samples to form an ICCProfile file to manage and debug colors. He is the development direction in the future, but ICC technology is currently in the process of perfection. Under the conditions of diverse domestic production conditions, limited funds, and low personnel and management levels, there are still problems such as high equipment capital requirements and complicated use.
The second is to adopt traditional color control theory, giving reflection density to simulate the traditional proofing control mode, and realize color management by controlling density and dots. It is the basis of ICC control color management and is the transition from traditional proofing to digital proofing Color management technology, but there are also high requirements on the operator's theory and technology.
The third is a mixed color management method that integrates the first to the second. According to the actual situation of domestic printing production, the digital proofing system using the mixed color management method is better and easy to master.
Currently, there are three types of digital proofing software:
First, design proof for layout design;
The second is color proofing for color effects;
The third is the screen proof for color and dot effect. Among them, color proofing is the most versatile.
Digital proofing equipment
1. Inkjet printer
Inkjet printers use the thermal foaming principle to spray ink onto the printing material through nozzles to form images. This proofing technology has high printing accuracy, strong color function, small size, light weight, and cheap price, and is widely used in the printing industry.
2. Sublimation printer
This proofing system uses a printhead containing thousands of heating elements and a ribbon containing CMYK colors for proofing. The print head can produce 256 different levels of heat. The solid pigment sublimates into steam and condenses on the receiving medium. At the center of each point, the color is darker, and the edge is lighter. When the printed four-color pigments are fused together to form a continuous tone image. The image tone printed by this printer is continuous, close to the output quality of color photos, and the colors are very gorgeous, but the cost is high, and the printing is slow, which is suitable for the needs of high-end users.
3. Thermal transfer color printer
It uses the heating element on the print head to heat, so that the solid ink on the ribbon is transferred to the printing medium. This kind of printer has high printing quality and fast speed, and the proofs are close to the printing effect. It is easy to realize high-definition printing and is widely used.
4. Color laser printer
Color laser printers are developed on the basis of black and white laser printers. It uses a laser beam to scan the optical drum, and controls the on and off of the laser beam to make the photosensitive drum absorb and not absorb Toner. The photosensitive drum then transfers the absorbed toner to paper to form a printed image. The printing system has high accuracy, but the hue of the toner is still not ideal, the color gamut is not wide enough, and the level of analog printing is limited.
Function Type Mask,Functional Type Mask,Functional Category Mask,Efficacy Type Msak
Guangdong Yueji Cosmetics Co., Ltd , https://www.mask-family.com