Wide color gamut printing
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First. What is the background of wide color gamut printing:
1. The need for the development of the times
At present, the use of digital cameras for the popularization of manuscripts, the widespread use of inkjet printers, and the construction of RGB digital workflow systems, in order to adapt to such printing environments, have led to the wide-color printing and will be widely used.
2. The need to develop overseas business
Since the printing business of the printing factory is likely to come from different countries and regions, it is most appropriate to use the ink of the country and region of the customer in principle. However, if you really want to do this, a wide variety of inks are very confusing and difficult to manage!
Second, 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, gamut that EIZO ColorEdge can express
s RGB: the color gamut that can be expressed by ordinary displays
Third, there are three main printing standards:
ISO (fogra) European printing standard
SWOP US Printing Standard
Japan Color Japanese printing standard
Four. What is wide color gamut printing?
Wide color gamut printing is by far the printing method closest to the Adobe RGB color gamut in color gamut performance.
There are currently two main printing methods:
1.6 color printing C+M+Y+K+O+G
Pantone: Hexachrome uses fluorescent colors
DIC: Six color system Packaging Industry
2.7 color printing C+M+Y+K+R+G+B
Heiderberg: HiFi Color
Wide color gamut inks include regular inks
Five. color wide color gamut printing inks mainly include:
Toyo Ink: Kaleido
DIC: Gushing Water Wakimizu
Donghua Ink :Broad
Yachang Development: CHROMA centric, is a CHROMA centric ink close to the AdobeRGB color gamut
The effects of four-color wide color gamut printing are: for ordinary printing, for example, the orange color of the leather bag, the blue color of the background, etc., are better than the current conventional printing.
Six. four-color wide color gamut are:
1. Four colors can be used for amplitude modulation and frequency modulation network printing. In order to prevent the occurrence of moire (moire pattern) in six or seven color printing, it is necessary to use FM network printing. AM outlets can also be specified abroad.
2. Corresponding to Yachang active printing machine
At present, Yachang's printing press is mainly based on 4 and 5 color machines.
3. Can be used for screen soft proofing display, EIZO Color Edge display
4. Can be Ink-Jet proofing
With the successful development of Vivid Magenta, the inkjet proofer can reproduce a wide color gamut.
5. Four-color wide color gamut application
5.1 Overseas printing materials, no need to specially prepare European and American ink specifications, saving the cost of ink in ordering, transportation, storage, etc.
5.2 high quality printing
Requires AdobeRGB prints, such as photography magazines, high-end books, FM/AM high-definition printing
Oil painting
Directory, such as the performance of flowers
Seven. Pay attention to the use of CHROMA centric ink:
1. After processing, M ink is soluble, not water glazing, but oily glazing.
2.PP processing
Test (note the M color variable) used
3. Light resistance, the effect is worse than the current standard ink.
4. Use the Wide Color Chart to make the text and flat background display better.
Eight. for high-grade wide color gamut printing:
The goal is: high-grade wide color gamut printing
High precision plate printing FM10μ or AM350 line
The combination of wide color gamut inks has become possible based on the development of materials, materials, methods, etc.
Nine. wide color gamut 4 color ink
ICC Profile Analysis Software
CTP plate, display, printing materials, etc.
Ten. Regarding the manuscript and input methods, they can be divided into the following three categories:
1. Color original
Yachang wide color gamut scanning
2. Reflective manuscript
Direct scanning or digital photography
3. Digital phase (digital) manuscript
Photographer development management requires AdobeRGB to have tiff, eps format
Wide color gamut printing Due to the development and popularization of computers, software, digital cameras, and printing plate making equipment in recent years, more and more applications have been applied. In order to achieve better results, Yachang uses the following equipment, materials and methods:
1. Image processing
The Scanner Heidelberg 3900 makes Lab scanning possible, and scans the original Lab (full color gamut) and converts the four colors using the ICC profile for wide color gamut.
2. Monitor EIZO Color Edge makes Adobe RGB reproduction possible and has improved stability.
3. Ink-jet Printer EPSON Stylus PRO 11880/9880, developed Vivid Magenta color, the field of reproduction has become wider.
4. Plate The high-definition CTP version of Fujifilm is used.
5. CTP Publishing Machine PlateRite 8600 with screen, and in order to reproduce high-definition and high-quality, use 4000dpi resolution output.
6. CTP plate-making machine adopts Fujifilm's ZAC plate-making machine, which has its own conductivity measuring instrument to ensure 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.