Separation and printing of Hi-Fi Color original colors
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The technology of color reproduction is a kind of special knowledge. For a long time, we often talked about the problem of color reproduction in the process of design printing, and often in our mouths RGB, CMYK, pot Color, PANTONE, DIC, Toyo And swop and so on are the unit of color unit. Many designers use PANTONE, Toyo and other colors to design, and use RGB as the display on the fluorescent screen. Various colors are set to display the bright colors on the screen, the images on the fluorescent screen and the inkjet printer. Paper makes the designer happy, and the work is more praised in the hands of the customers. Everyone expects the printed products to come out faster. So the designer handed the file to the output and production center for color separation output or poster printing, but when the finished product was handed back to the designer, the color in the picture turned out to be unrecognizable, the beautiful flower became dull, and the mouth-watering food became What happened after a few nights? Most of the original fluorescent screens and inkjet printers have great color performance, which is beyond the color gamut of general four-color printing or poster inkjet, so that the original bright colors can not be expressed in these reproduction methods.
What is Hi-Fi Color and its translated name
In traditional color printing technology, yellow, magenta, and cyan can produce thousands of colors, and adding black increases the overall concentration, so the level is more abundant. Generally, color printing equipment, whether it is inkjet, laser toner and thermal transfer technology, uses CMYK four colors as ink color, but in recent years manufacturers have developed more than four colors of equipment, CMYK plus light red and Light blue, CMYK plus orange and green, and more CMYK plus light red, light blue, orange and green, they use four colors and other ink colors to enrich the printed color, the original use of the same in printing technology The program, which is called Hi-FiColor. Hi-Fi is short for High Fidelity and is highly realistic. Hi-Fi Color is translated into "high-fidelity color" in China, while Hong Kong scholars translate it into "original color."
It is not easy to use the general printing method to faithfully copy colors, because the general four-color and copying technology has certain limitations. The color gamut range of the copied color is affected by the printing method, paper and ink coordination, plus one full Toned pictures can be converted to half-tone pictures with dots, which can greatly reduce the color gamut of the copied colors. If the original colors are used to copy the prints, the original colors can be more faithfully expressed.
Original color is not new
Original color is not a new thing. Many years ago, people used line blue as the fifth color other than four colors to subsidize the color of the landscape picture blue sky and green grass, and use light red to subsidize the human skin color, etc., to make the color more abundant. Later, four-color printing technology developed rapidly, and basically four colors have already met the needs of most color printing. But why have you raised the technology of original color again in recent years? It may be the development of science and technology, so that the color separation masters who used to need experience before, through the very complicated process can be done in today's button-like simplicity, and the multi-color printing unit is also very popular, plus people The requirement of color reproduction degree, so this technology has attracted the attention and development of the industry.
In 1993, the United States launched the Hi-Fi Color research program, which was supported by a number of vendors. Later, different manufacturers introduced different solutions, including Linotype-Hell, Dupont and PANTONE. After years of development. Many companies in Europe and America have mastered the technology, and some customers are happy to adopt it. Everyone in Hong Kong knows this technology for a while, but no one really understands it in detail, causing only a few stairs to ring and no one to come. I heard that some company orders can't be picked up because of lack of experience.
Color scientists have been conducting research to find a complete method of color reproduction. In the offset printing, they add a layer of color to the general four-color printing, and then add a layer of color to six-color printing; even seven-color printing. These extra colors, of course, expand the gamut of the copied colors, but what color is right?
In the early days, in the era of color separation using plate-making cameras, some art pictures and portrait photos have been printed in six colors; in addition to C, M, Y, K, plus pink and light blue to increase green, purple and skin color . In terms of experiments and research, in addition to the color characteristics of the original image, other special colors such as gray, silver, or gold can be added in addition to C, M, Y, and K.
Four major categories of original colors
<1>High Efficiency Color- This is based on CMYK inks. It uses some high-color four-color inks. The advantage is that the general proof and four-color printing building can do it.
<2> Hyper Color - developed by Dupont, uses CMYK plus CMY to enhance color, and the method of making high-performance color has the same advantage of using a four-color printing building.
<3> PANTONE Hexachrome - This method was developed by PANTONE, using six-color printing, CMYK plus orange and green, but this set of CMYK and OG inks is Hexachrome's ink, not ordinary CMYK.
<4> Kuppers Technique - This method uses CMYK plus RGB to print in seven colors. The advantage is that it can reduce the problem of color registration and Trapping. For example, the big red is originally composed of M+Y, but the Red channel can replace MY rain.
The most versatile Hi-Fi Color standard
Hexachrome is a kind of original color technology, developed by PANTONE; first introduced in 1995 at the DRUPA exhibition in Germany. Hexachrome is available in six colors, including improved CMYK and high-color orange and oak. The six-color printing method can be used to model the 90% color of PANTONE Respect (PMS), which is comparable to the general four-color printing. Suspected 50% color is almost doubled. PANTONE's tools for Hexachrome include HexWare's color separation software, Hexachrome Color Selector and Solid in Hexachrome color guides.
Hexachrome color separation
Hexachrome technology is the most difficult to master with color separation and proofing technology. There are few tools to choose from. PANTONE has a set of famous Hexware software. The software is divided into two parts - HexImage and HexVector. Hexlmage is Photoshop's Plug. The -in tool is mainly used to convert the image conversion of RGB or Lab color space into Hexachrome's six-color image. HexVector is the Plug-in of Adobe Illus-trator, which deals with the Hexachrome color of the graphics part.
PANTONE Hexlmage
This is a Photoshop Plug-in tool that can decompose RGB, CMYK, and Lab files into Hexachrome's CMYK and OG hexagonal colors. After color separation, it is saved as a DCS2.0 file for placement in QuarkXPress, Adobe PageMaker, etc. Or used in a drawing application. Hexlmage uses an ICC workflow and includes ICC profiles for a variety of different conditions. After the image is separated, you can use Photoshop's built-in functions to preview the color separation effect of each color version, and edit and modify it at will. The part of HexImage is mainly the process of discoloring the image, but the color gamut of the image itself is more effective than the four-color CMYK.
PANTONE HexVector
Designed to meet the needs of Hexachrome by Illustrator designers, the collection of three major six-color libraries, including HexachromeCoated, Hexachrome Uncoated and PANTONE Solidin Hexachrome.
1. Open an RGB image in Photoshop.
2. Use Photoshop's Gamat Warning to observe. The gray part of the picture represents the color that the four-color ink cannot hold.
3. Select the appropriate ICC Profile in Hexlmage and press the Separate button to seal the RGB for color separation.
4. After converting to Hesachrome's file, there will be a large version of HexachromeCMYK and OG, and the file will be saved to DCS2.0 file format, and then you can put in software such as PageMaker and QuarkXpress for typesetting and output.
5. When the Hexachrome image is placed in PageMaker, the color window will automatically appear in Hexachrome color version.
6. After installing HexVextor, launch Adobe IIIuxtrator and find the HexVector menu in the window. Here you can convert and set the color of Hexachrome.
7. Here you can find Hexachrome color options, including Hexachrome Coated, Hexachrome Uncoated and Solid in Hexachrome. In this book, Jindong Copper Plate 95g - Big Shuttle
Hexachrom's method of writing
Conventional inks can be used for drafting, but the Hexachrome standard ink color is high. Another way is to use digital proofing. The Hi-FiJet from Roland is a six-color inkjet printer that can be used with PANTONE Hexachrome standard inks. Using Hi-FiJet to carry out the proof is believed to be comparative.
All-round color separation software ICISS
ICISS's full name is Interactive Color Independent Separation Software. The developer of this software is VISU in the Netherlands. Two years ago, PANTONE was the world's general agent and has now transferred to the UK's Special Colour company. (http://aurelon.iae.nl/dealers/dealer.htm)
ICISS's color separation function is extraordinary. This software is actually a color calculation part (Color Computer) of a high-end color separation machine (such as Hell, Crossfield, DS), which turns its technology into software running on a Mac. ICISS not only can handle the color separation of general four-color ink, the most powerful is that any ink color can be input into the software for color separation of four colors, four colors or four colors. The number of colors is not limited, by two There is no problem with color separation from color to sixteen colors.
The working steps of the ICISS software, (l) first start the Scanner software part of ICISS. (2) Set the color number and color data of the ink to input the data, and (3) perform the Hue Mapping process on the ink color data by setting the curves of different ink colors to restore the color spectrum, and (4) setting the gray balance. (Gray Balance), (5) Set Color Correction, (6) Save all settings to the component color, (7) Start the color separation part of ICISSSeparator to separate the color, and the completed File will be saved. The format of DCS2.0. When the color separation is completed, you can use Adobe Photoshop software, plus VISU CoCo for color correction work.
In a nutshell, ICISS is a versatile color separation and color correction tool that is the embodiment of a high-end Scanner.
1. ICISS Scanner software for different color settings.
2. Hue Maping settings.
3. Gray balance setting.
4. The ICISS Separator performs color separation.
5. Open the color-separated DCS 2.0 image file in Photoshop and you will see the channel of the spot color.
6. Use VISU CoCo's software for final color correction in Phogoshop.