At present, large format printers have been applied to GIS/CAD, printing, imaging, and GA. Among the mainstream brands, technically speaking, they are mainly divided into two groups: thermal foam and micro piezo. In other technologies, large format printers have basically eliminated 4 colors and entered the era of 6 colors and 7 colors. ; And the ink used is mainly divided into pigment ink and dye ink. For users of various industries, many users are confused. What kind of equipment is more suitable for their own needs, this article mainly introduces the different output effects and advantages and disadvantages in terms of the type of ink and the contrast between 7 colors and 6 colors. .
Where is 7 colors better than 6 colors?
The addition of the 7th color makes the print screen more exquisite. The 7-color output of the large format printer is based on the original yellow, product, blue, black, light product, and light blue. We know that the lighter and lighter colors of the 6-color printers make the printed work less grainy than the 4-color printers. This is because the 4-color printers need to reduce the number of ink droplets when printing transition colors to make the screen lighter. Caused by the addition of light and light green, the ink droplet density when printing transitions and light-colored images can be as much as the dark part of the print. Therefore, the picture particles we see are significantly reduced. When the seventh color, light black, is added, the graininess of the print screen will be reduced even more, especially in printing black and white works.
The addition of the 7th color makes the color of the print screen more accurate. In addition, the appearance of the pale black solves the problem of print color shifting in the 4-color or even 6-color printer. For the simplest example, when we use a color inkjet printer to print black and white works, such as setting up color printing, the output is fine, but the screen is obviously color-resolved. This is because the printer uses the product when printing gray, Blue, yellow, and black simulate the results of gray; if we use the black and white print setting, the printer will print a gray part to reduce the black ink droplets and cause a large area of ​​visible particles, making the picture very rough. Color works also contain a variety of gray tones, but they are more complex than black-and-white printing, so the resulting works are the same as black and white. When printing is added to the seventh color - light black, we can clearly see that the gray balance of black and white or color works is almost perfect, so that the color reproduction of printed works is better and the printed works are more perfect. .
Comparison of pigment ink and dye ink Since the use of dye ink (DYE) is not conducive to the preservation of printed works, large-format printer manufacturers are eager to develop printing inks that can enable print works to be stored for a long time, so pigment ink (UV) is born. ). At present, large-format printers use the above two inks respectively, such as the “Century Iridescent†pigment ink used in the EPSON STYLUS PRO7600/9600 series models and the indoor dye ink used in the HP 5000.
In general, although the dye ink works have a lot of problems, the color is better than the pigment ink. Therefore, many printers use dyes and pigments according to indoor and outdoor use.
However, Epson's “Century Iridescent†pigment ink is much better than other general pigment inks. Even in terms of color gamut and color gamut, it exceeds the dye ink's color expression. Therefore, Epson’s “Century Iridescent†pigment ink is used. Can adapt to various output needs. Let's take a look at the advantages of Epson's “Century Iridescent†and ordinary dye inks.
Where is 7 colors better than 6 colors?
The addition of the 7th color makes the print screen more exquisite. The 7-color output of the large format printer is based on the original yellow, product, blue, black, light product, and light blue. We know that the lighter and lighter colors of the 6-color printers make the printed work less grainy than the 4-color printers. This is because the 4-color printers need to reduce the number of ink droplets when printing transition colors to make the screen lighter. Caused by the addition of light and light green, the ink droplet density when printing transitions and light-colored images can be as much as the dark part of the print. Therefore, the picture particles we see are significantly reduced. When the seventh color, light black, is added, the graininess of the print screen will be reduced even more, especially in printing black and white works.
The addition of the 7th color makes the color of the print screen more accurate. In addition, the appearance of the pale black solves the problem of print color shifting in the 4-color or even 6-color printer. For the simplest example, when we use a color inkjet printer to print black and white works, such as setting up color printing, the output is fine, but the screen is obviously color-resolved. This is because the printer uses the product when printing gray, Blue, yellow, and black simulate the results of gray; if we use the black and white print setting, the printer will print a gray part to reduce the black ink droplets and cause a large area of ​​visible particles, making the picture very rough. Color works also contain a variety of gray tones, but they are more complex than black-and-white printing, so the resulting works are the same as black and white. When printing is added to the seventh color - light black, we can clearly see that the gray balance of black and white or color works is almost perfect, so that the color reproduction of printed works is better and the printed works are more perfect. .
Comparison of pigment ink and dye ink Since the use of dye ink (DYE) is not conducive to the preservation of printed works, large-format printer manufacturers are eager to develop printing inks that can enable print works to be stored for a long time, so pigment ink (UV) is born. ). At present, large-format printers use the above two inks respectively, such as the “Century Iridescent†pigment ink used in the EPSON STYLUS PRO7600/9600 series models and the indoor dye ink used in the HP 5000.
In general, although the dye ink works have a lot of problems, the color is better than the pigment ink. Therefore, many printers use dyes and pigments according to indoor and outdoor use.
However, Epson's “Century Iridescent†pigment ink is much better than other general pigment inks. Even in terms of color gamut and color gamut, it exceeds the dye ink's color expression. Therefore, Epson’s “Century Iridescent†pigment ink is used. Can adapt to various output needs. Let's take a look at the advantages of Epson's “Century Iridescent†and ordinary dye inks.
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