TWM606776U - Seven-color printing system - Google Patents

Abstract

A multicolor press print system includes an arithmetic unit, and a printing unit electrically connected to the arithmetic unit and including a seven-ink holder. The ink colors of the ink holders are cyan, magenta, yellow, black, orange, purple, and green. The printing unit and the arithmetic unit are used to perform seven-color wide color gamut printing. First, the printing unit is used to A color target copy is printed out by a color target, the color target copy is scanned to generate a color target image file, the arithmetic unit analyzes the color target image file to obtain a color gamut space of the printing unit, and the arithmetic unit analyzes the color gamut space, In order to generate a seven-color color code look-up table, the seven colors of the seven-color color code look-up table include cyan, magenta, yellow, black, orange, purple, and green. Then, the color of a printing master is transmitted through the seven colors by the arithmetic unit The color code look-up table is converted into the seven-color ink values of cyan, magenta, yellow, black, orange, purple and green. Finally, according to the seven-color ink value of the color of the printing master, the printing unit is used to mix the AM dots and the FM dots Perform printing to produce a wide color gamut print.

Description

Seven-color printing system

This model relates to a printing system, especially a seven-color printing system.

Today's color printers mostly use four colors of cyan (C), magenta (M), yellow (Y), and black (K) for mixing and superimposing and printing with amplitude modulated dots. However, this CMYK four-color printing method Affected by the ink used, the color gamut space presented by it is small, resulting in a significant difference between the colors presented on the actual printed matter and the colors of the original image presented on the screen.

Therefore, the purpose of the present invention is to provide a seven-color printing system that can overcome at least one of the disadvantages of the prior art.

Therefore, the new seven-color printing system includes an arithmetic unit and a printing unit.

The printing unit is electrically connected to the arithmetic unit and includes seven ink holders. The ink colors of the ink holders are cyan, magenta, yellow, black, orange, purple, and green. The printing unit and the arithmetic unit Used to perform seven-color wide-color gamut printing. First, use the printing unit to print a color target copy of a color target, scan the color target copy to generate a color target image file, and use the arithmetic unit to analyze the color target image file to obtain the print A color gamut space of the unit, and the arithmetic unit is used to analyze the color gamut space to generate a seven-color color code look-up table. The seven colors of the seven-color color code look-up table include cyan, magenta, yellow, black, orange, purple, and green. Then, the arithmetic unit is used to convert the color of a printing master piece into the seven-color ink values of cyan, magenta, yellow, black, orange, purple, and green through the seven-color color code look-up table. Finally, according to the printing master piece The seven-color ink value of the color is printed by using the printing unit to mix amplitude modulation dots and frequency modulation dots to produce a wide color gamut print.

The effect of the new model is: the new model utilizes the CMYKOGV seven-color printing design to expand the color gamut space of the printing unit to a color gamut space approaching sRGB and Adobe RGB. Therefore, the new model can make the printing master and the The hue of the wide color gamut prints before and after the color conversion is similar. In this way, when combined with the seven-color special ink of the printing unit, the color of the wide color gamut prints can be brighter and more vivid, and the color of the wide color gamut prints can be mixed with AM dots and FM dots for printing. It can also make the color of the wide color gamut printed matter more saturated and uniform. In other words, the present invention can make the color of the wide color gamut printed matter more consistent with the color displayed on the screen of the printing master, achieving the effect on the screen. .

Refer to FIG. 1, which shows an embodiment of a new seven-color printing system 100. The seven-color printing system 100 includes an arithmetic unit 10 and a printing unit 20.

In this embodiment, the arithmetic unit 10 is a computer host, but it is not limited to this, and the arithmetic unit 10 may also adopt other devices with computer functions.

The printing unit 20 is electrically connected to the computing unit 10, and includes seven ink holders 21, 22, 23, 24, 25, 26, and 27. The ink holders 21, 22, 23, 24, 25, 26, 27 The colors are cyan (C), magenta (M), yellow (Y), black (K), orange (O), purple (G), and green (V). In this embodiment, the printing unit 20 It is a seven-color printing machine.

As shown in Figures 1 and 2, the printing unit 10 and the computing unit 20 can cooperate to perform seven-color wide color gamut printing, including the following steps:

Step 210: As shown in Figures 2 and 3, the printing unit 20 is used to print a color target copy 30 (not shown). In this embodiment, the color target is an image file, and the color target is copied The book 30 is a paper printed matter. Next, scan the color target copy 30 to generate a color target image file, and then use the color management software built in the computing unit 10 to analyze the color target image file to obtain a color gamut of the printing unit 20 Then, the color gamut space is analyzed by the color management software built in the computing unit 10 to generate a seven-color color code look-up table. The seven colors of the seven-color color code look-up table include cyan, magenta, yellow, black, and orange. , Purple and green. In this embodiment, the arithmetic unit 10 generates the seven-color color code lookup table based on 1260 colors, and the seven-color color code lookup table is a color conversion program.

Step 220: As shown in Figures 2 and 3, use the color management software built in the computing unit 10 to convert the color of a printing master into cyan, magenta, yellow, black, orange, etc. through the seven-color color code look-up table. The seven-color ink values of purple and green. In this embodiment, the printing master is an image file.

Step 230: As shown in FIGS. 2 and 4, according to the seven-color ink value of the color of the printing master, the printing unit 10 is used to mix the AM dots and the FM dots for printing to produce a wide color gamut printed product 40. In this embodiment, the four-color ink values of cyan, magenta, yellow, and black of the printing master piece are printed using amplitude modulation dot printing, and the three-color ink values of orange, purple and green of the printing master piece are used FM dot printing.

Through the above description, the advantages of the present invention can be summarized as follows:

1. This new model utilizes the design of CMYKOGV seven-color printing, which can expand the color gamut space of the printing unit 20 to a color gamut space approaching sRGB and Adobe RGB. Therefore, this new model can make the printing master and the wide color gamut The hue of the printed matter 40 before and after the color conversion is close. In this way, the color of the wide-color gamut printed matter 40 can be brighter and more vivid by matching the seven-color special ink of the printing unit 20, and the color of the wide-color gamut printed matter 40 can be more bright and vivid. It can also make the color of the wide color gamut printed matter 40 more saturated and uniform. Compared with the conventional technology, the present invention can make the color of the wide color gamut printed matter 40 and the color of the printing master on the screen more Consistent, to achieve the effect on the screen.

2. Orange, purple and green are originally the secondary colors of traditional printing, and they are complementary and contrasting colors with each other. This new model replaces orange, purple and green with primary colors and replaces the original secondary colors , Can effectively reduce the ink overprint rate of the wide color gamut printed matter 40, and make the color of the wide color gamut printed matter 40 brighter and more vivid.

3. The novel hybrid AM dots and FM dots for printing can prevent the wide color gamut printed matter 40 from producing moiré.

4. The printing unit 20 of the present invention is equipped with the ink holders 21, 22, 23, 24, 25, 26, 27 with the ink colors of cyan, magenta, yellow, black, orange, purple and green. It can facilitate the printing operation of various spot color orders, and effectively save the times and time of ink distribution, car washing, and ink change.

5. After actual operation and verification, the new model can simulate the color of Pantone Solid Coated V4, and the hue matching rate can reach more than 90%.

In summary, the new seven-color printing system of the present invention can make the color of the wide-color gamut printed matter brighter, brighter, more saturated and even, so that the color presented by the wide-color gamut printed matter is consistent with the color of the printing master on the screen. The colors presented are more consistent to achieve the effect on the screen, so it can indeed achieve the purpose of new cost.

However, the above-mentioned are only examples of the present model, and should not be used to limit the scope of implementation of the present model, all simple equivalent changes and modifications made in accordance with the patent scope of the present model application and the contents of the patent specification still belong to This new patent covers the scope.

100: Seven-color printing system 10: Operation unit 20: Printing unit 21: Ink seat 22: Ink seat 23: Ink seat 24: Ink seat 25: Ink seat 26: Ink seat 27: Ink seat 30: Color Target Copy 40: Wide color gamut printed matter 210: Step 220: step 230: step

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a system configuration diagram of an embodiment of the new seven-color printing system; Figure 2 is a flow chart of the seven-color wide color gamut printing method of this embodiment; Fig. 3 is a view similar to Fig. 1 illustrating the use of a printing unit of this embodiment to print a color target copy of a color target; and Fig. 4 is a view similar to Fig. 1, illustrating the use of the printing unit to mix amplitude modulation dots and frequency modulation dots for printing to produce a wide color gamut print.

100: Seven-color printing system

10: Operation unit

20: Printing unit

21: Ink seat

22: Ink seat

23: Ink seat

24: Ink seat

25: Ink seat

26: Ink seat

27: Ink seat

Claims (3)

A seven-color printing system, including: An arithmetic unit; and A printing unit is electrically connected to the computing unit and includes seven ink holders. The ink colors of the ink holders are cyan, magenta, yellow, black, orange, purple, and green. The printing unit and the computing unit The unit is used to perform seven-color wide color gamut printing. First, use the printing unit to print a color target copy of a color target, scan the color target copy to generate a color target image file, and use the arithmetic unit to analyze the color target image file to obtain the color target image file. A color gamut space of the printing unit, and the arithmetic unit is used to analyze the color gamut space to generate a seven-color color code lookup table. The seven colors of the seven-color color code lookup table include cyan, magenta, yellow, black, orange, purple, and green. , And then, using the arithmetic unit to convert the color of a printing master piece into seven-color ink values of cyan, magenta, yellow, black, orange, purple and green through the seven-color color code look-up table, and finally, according to the printing master piece The seven-color ink value of the color is mixed with the AM dot and the FM dot by the printing unit to produce a wide color gamut print. The seven-color printing system according to claim 1, wherein the arithmetic unit is used to analyze the color gamut space, and the seven-color color code look-up table is generated according to 1,260 colors. The seven-color printing system according to claim 1, wherein the four-color ink values of cyan, magenta, yellow, and black of the printing master are printed using amplitude modulation dots, and the colors of the printing master are orange, purple and The green three-color ink values are printed using frequency modulation dots.

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