For printing staff, the ink used for multicolor prints should be overprinted with what kind of printing sequence. It is important to know which color sequence should be used for different printing machines. The following is a brief introduction to the color printing sequence of monochrome, two-color, and four-color machines.
First, the monochromatic machine is a wet-stacked dry stamper. In the transfer process of the ink, even if the first printing ink is dry, only the ink transferred to the paper by more than 80% can be printed. Therefore, in order to minimize the color difference in the overlay, it can better bring out an important color in the image. The corresponding printing sequence should be used. For example, if the screen has red as an important color, it should be printed according to the magenta-yellow color sequence so that the screen highlights the main color red. In addition, in the printing of a monochrome machine, the yellow and black prints that do not require very high overlay accuracy are required. In this way, when the paper gradually becomes stable, the printed color is reprinted to reduce the occurrence of overprint due to the high precision of overprinting. Inaccurate phenomenon, thus improving the quality of printed matter.
Second, the two-color printing machine in the two-color printing machine in the second color and the third color is a wet stack overlay. 1-2 colors and 3 to 4 colors are wet and overprint, so the following printing sequence is generally used in printing: 1-2 color magenta - green or blue - magenta 4 color black - yellow Or yellow-black but also as needed. To highlight a heavy color, such as green, it should be printed according to the magenta-yellow, cyan-black overprint color sequence, so as to obtain a better printing effect.
Three color printing machines mainly use three printing color sequences:
1. Incremental ink color sequence:
The increasing color sequence of the ink layer is to use the color sequence that gradually increases the ink film thickness from the first color ink. For example, using a density of 1.6 for the cyan ink, the thickness of the ink film on the paper is about 0.85 μm; the magenta density is 1.4, the ink film thickness is about 0.9 μm, the yellow ink density is 1.0, and the ink film thickness is about 1.3 μm. Printing in this ink layer with increasing printing sequence colors - magenta - yellow - will give printed products satisfactory results.
2. The printing color sequence with decreasing viscosity is a wet and wet overprint in four-color printing, that is, the front printing is still in a completely wet state, and the rear printing has been overprinted. If the viscosity of the printing ink is large, anti-sticking phenomenon will occur under the action of stickiness, which will affect the accuracy of overprinting. Therefore, the viscosity of the ink must be taken into account in the overprinting process, and the printing color sequence with decreasing viscosity is used to ensure the quality of the printed matter.
3. Decreasing transparency of the color sequence In the four-color machine printing, the printing color sequence should also be considered from the transparency of the ink. For example, in the four-color printing process, if the yellow ink is made of chrome yellow, its transparency is low, and yellow ink must be printed first. If the ink is printed on the yellow ink, color shifts will occur at the shadows of the graphic and graphic texts, which will seriously affect the quality of the printed matter.
In short, in the printing of four-color machines, if the black version is predominant, the long blue color will be emphasized, and the cyan-magenta-yellow-black overprint sequence will be used to print; if the black version is a complementary version, the red is emphasized. Lord, can use black - blue - magenta - yellow to print.
In summary, the understanding of the printing sequence of different printing presses is particularly important, and it directly affects the effect of printed matter. For printing staff, it is necessary to have a good grasp of printing color sequence printing methods for various types of printing machines. At the same time, it is expected that operators who are engaged in printing machine operations can obtain some help and inspiration through the above introduction. Designed to improve the quality of printing.
First, the monochromatic machine is a wet-stacked dry stamper. In the transfer process of the ink, even if the first printing ink is dry, only the ink transferred to the paper by more than 80% can be printed. Therefore, in order to minimize the color difference in the overlay, it can better bring out an important color in the image. The corresponding printing sequence should be used. For example, if the screen has red as an important color, it should be printed according to the magenta-yellow color sequence so that the screen highlights the main color red. In addition, in the printing of a monochrome machine, the yellow and black prints that do not require very high overlay accuracy are required. In this way, when the paper gradually becomes stable, the printed color is reprinted to reduce the occurrence of overprint due to the high precision of overprinting. Inaccurate phenomenon, thus improving the quality of printed matter.
Second, the two-color printing machine in the two-color printing machine in the second color and the third color is a wet stack overlay. 1-2 colors and 3 to 4 colors are wet and overprint, so the following printing sequence is generally used in printing: 1-2 color magenta - green or blue - magenta 4 color black - yellow Or yellow-black but also as needed. To highlight a heavy color, such as green, it should be printed according to the magenta-yellow, cyan-black overprint color sequence, so as to obtain a better printing effect.
Three color printing machines mainly use three printing color sequences:
1. Incremental ink color sequence:
The increasing color sequence of the ink layer is to use the color sequence that gradually increases the ink film thickness from the first color ink. For example, using a density of 1.6 for the cyan ink, the thickness of the ink film on the paper is about 0.85 μm; the magenta density is 1.4, the ink film thickness is about 0.9 μm, the yellow ink density is 1.0, and the ink film thickness is about 1.3 μm. Printing in this ink layer with increasing printing sequence colors - magenta - yellow - will give printed products satisfactory results.
2. The printing color sequence with decreasing viscosity is a wet and wet overprint in four-color printing, that is, the front printing is still in a completely wet state, and the rear printing has been overprinted. If the viscosity of the printing ink is large, anti-sticking phenomenon will occur under the action of stickiness, which will affect the accuracy of overprinting. Therefore, the viscosity of the ink must be taken into account in the overprinting process, and the printing color sequence with decreasing viscosity is used to ensure the quality of the printed matter.
3. Decreasing transparency of the color sequence In the four-color machine printing, the printing color sequence should also be considered from the transparency of the ink. For example, in the four-color printing process, if the yellow ink is made of chrome yellow, its transparency is low, and yellow ink must be printed first. If the ink is printed on the yellow ink, color shifts will occur at the shadows of the graphic and graphic texts, which will seriously affect the quality of the printed matter.
In short, in the printing of four-color machines, if the black version is predominant, the long blue color will be emphasized, and the cyan-magenta-yellow-black overprint sequence will be used to print; if the black version is a complementary version, the red is emphasized. Lord, can use black - blue - magenta - yellow to print.
In summary, the understanding of the printing sequence of different printing presses is particularly important, and it directly affects the effect of printed matter. For printing staff, it is necessary to have a good grasp of printing color sequence printing methods for various types of printing machines. At the same time, it is expected that operators who are engaged in printing machine operations can obtain some help and inspiration through the above introduction. Designed to improve the quality of printing.
Wine Rack,Metal Rack,Wire Rack
Display Rack,Capacitor Co., Ltd. , http://www.nsdisplayrack.com