1. What is the background of wide color gamut printing:
1. The needs of the development of the times
At present, the popularization of manuscript input using digital cameras, the widespread use of inkjet printers, and the construction of RGB digital workflow systems, in order to adapt to such a printing environment, has enabled wide color gamut printing to begin and be widely used.
2. The need to develop overseas business
Since the printing business currently engaged in printing plants may come from different countries and regions, in principle, it is most appropriate to use the ink of the country or region where the customer is located. However, if you really want to do this, the management of a wide variety of inks is very confusing and difficult to execute smoothly!
Second, first briefly introduce the following three color gamuts
L * a * b *: full color gamut, the widest color gamut independent of the device
Adobe RGB: Ink Jet printer, the color gamut that EIZO ColorEdge can express
s RGB: the color gamut that can be expressed by ordinary monitors
3. There are currently three main printing standards:
ISO (fogra) European printing standard SWOP American printing standard Japan Color Japanese printing standard
4. What is wide color gamut printing?
Wide color gamut printing is by far the closest printing method to the AdobeRGB color gamut in terms of color gamut performance.
There are currently two main printing methods:
1.6 color printing C + M + Y + K + O + G
Pantone: Hexachrome uses fluorescent color DIC: Six color system packaging industry
2.7 color printing C + M + Y + K + R + G + B
Heiderberg: HiFi Color
Wide color gamut ink including ordinary ink
Five, four-color wide color gamut printing inks are:
Toyo Ink: Kaleido
DIC: ?????? mimizu
Donghua Ink: Broad
Developed by Artron: CHROMA centric, which is close to the AdobeRGB color gamut, has four-color wide color gamut printing effects. For ordinary printing, for example, the orange color of the leather bag, the blue color of the background is better than the current traditional print.
Six, four-color wide color gamut characteristics
1. Four colors can be used for AM and FM screen printing, and in order to prevent moire (moire) when printing in six or seven colors, FM screen printing must be used. AM outlets can also be designated abroad.
2. Corresponding to the active printing machine of Yachang
At present, Yachang's printing machines are mainly based on 4, 5 color machines
3. Can be used for screen soft proofing display, EIZO Color Edge display
4. Ink-Jet proofing
With the successful development of Vivid Magenta, the inkjet proofer can reproduce a wide color gamut.
5. Application of four-color wide color gamut
â‘ For overseas printed materials, there is no need to prepare European and American ink specifications, which saves the cost of ink in ordering, transportation and storage
Requires the presentation of AdobeRGB printed matter, such as photography magazines, high-end books, FM / AM high-definition printed oil painting albums, catalogs, such as the expression of flowers [next]
Seven, pay attention to when using CHROMA centric ink:
1. Post-processing, M ink is soluble, not water-based glazing, but oily glazing.
2. PP processing
Used for testing (note the M color variable)
3. Light resistance, compared with the current standard ink, the effect is worse.
4. Use a wide color gamut (Color Chart), the text, flat screen background color display better.
8. For high-grade wide color gamut printing:
The goal is: high-quality wide-gamut printing, high-precision plate-making printing, and the combination of FM10μ or AM350 line wide-gamut ink based on the development of materials, machinery, methods, etc.
Nine, wide color gamut 4 color ink
ICC Profile analysis software CTP plate materials, displays, printing materials, etc.
10. The manuscript and input method can be divided into the following three categories:
1. Color manuscript scanning of AAC wide color gamut
2. Direct scanning of reflective manuscript or digital photography
3. Digital photograph (digital) manuscript photographer development management requirements AdobeRGB has tiff, eps format
Wide color gamut printing has become more and more popular in recent years due to the development and popularization of computers, software, digital cameras, and printing plate-making equipment. In order to achieve better results, Artron adopted the following equipment, materials and methods:
1. Image processing
Scanner Heidelberg 3900 makes Lab scanning possible. After scanning the original Lab (full color gamut), the four colors are converted using the ICC profile for wide color gamut.
2.Monitor EIZO
Color Edge makes Adobe RGB reproducible, and the stability is improved.
3. Ink-jet Printer EPSON Stylus PRO 11880/9880, develop Vivid Magenta color, the reproduction field becomes wider.
4. Printing plate High-precision CTP version using Fujifilm.
5. CTP publisher uses PlateRite8600 with screen, and in order to reproduce high definition and high quality, it uses 4000dpi resolution output.
6. The CTP plate processor uses Fujifilm's ZAC plate processor, which has its own conductivity meter to ensure that the conductivity of the developer is more stable. According to the innovation of the auxiliary system, it is more suitable for developing high-definition dots.
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