If you want to add special effects to offset printing jobs in the printing process, you can use fluorescent ink in the four-color printing process, so that the printed image can emit a shining brilliance.
Fluorescence can make images jump, and in the offset printing process, fluorescent inks can be used in a variety of ways. For example, if you can add 25% to 50% of pink fluorescent ink to ordinary magenta ink, the image of a pink balloon will become more prominent. Because the color of the fluorescent ink is relatively light, it can make the image lighter, and the heavier magenta ink can be used to maintain the depth, detail, and contrast of the image. To better control and influence the printing press, pink ink can be added as the fifth color to the printing process of this pink balloon. This can selectively print fluorescent ink on a specific area, thereby ensuring the authenticity of other colors, such as the color of the hand of the person holding the balloon. For solid patches that need to be emphasized, fluorescent ink can be printed twice. Economic Benefits and Multiple Uses Because non-coated paper can easily absorb a large amount of ink, the colors on printed pages can easily lose vitality. But fluorescent inks can maintain a high brightness under the premise of being absorbed into a large amount of paper, because they can reflect more light into the eyes. They can also be used at the end of the printing process to compensate for image details that are not printed on uncoated paper. For example, if an image is dominated by yellow and magenta, then fluorescent ink can be used instead of the primary printing color to increase the brightness of the image.
The use of fluorescent inks is not a precise science, and not every printing house has the same process, options, equipment and suppliers. As long as it can be used reasonably, fluorescent ink can become a profitable tool and have a significant impact on printing results.
Precautions for the use of printed fluorescent inks
Bright images containing large areas of solid patches are best suited for fluorescent inks. If this ink is used in a dark tone image with many shadows, some texture and contrast may be lost. The price of fluorescent ink is about 20% more expensive than ordinary ink. But the proportion of ink in the total cost of a printing job is very small. Yellow and magenta fluorescent inks have the strongest impact and blue inks have the weakest effects. Be sure to choose the application method of fluorescent ink carefully. Water-based coating is easier to fade fluorescent ink than glazing coating. But no matter which way you choose, the paint will have an effect on the effect of fluorescent ink. The image cannot be accurately checked with fluorescent ink. So be sure to check the image on the printing press, because the fluorescent ink is likely to have a slight color shift during the printing process. Because these inks are relatively shallow, printing plants tend to increase the amount of ink supplied to the printing press in order to print brighter colors. These "changing" pigments are most suitable for printing short-term promotional materials with strong impact because they easily fade. Although fluorescent ink is very bright, it is not necessary to give up shadows. Fluorescent inks look bright because they use a large proportion of spectral colors, including UV light. They convert the wavelength of UV light into visible light, thereby reflecting more colors into the eyes. Fluorescent inks are made of fluorescent dyes and resins. Fluorescent dyes can make inks brighter, but if resin is not added to the solution, they cannot fluoresce.
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