Special inks inject life into prints
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The variety of inks has changed thousands of times, and the arduous task is inseparable from the life color of printed matter. A plain white cardboard, under the ultraviolet light, appeared a colorful fluorescent pattern, the viewers are all heart-wrenching; a recipe filled with delicious food, of course, appetite, If it is scented with scented ink, it is even more tempting. It is not difficult to imagine that if the inks are all the same, the extraordinary charm of the printed matter will not disappear even if it does not disappear.
Fluorescent inks give invisible colors
In the special printing effect set, many kinds of printed workmanship are exquisite, and the printing of the printing board with the same difficulty is mixed with a white paper with a common appearance. The picture is blank, and the "unique" place easily attracts people's attention.
Looking closely at the production instructions of the printed sheet, I finally got a clear answer. The white cardboard is printed on the fluorescent anti-counterfeiting ink and can be clearly displayed under ultraviolet light. Take the printed sheet to the next shot of the ultraviolet light, the vivid fluorescent yellow and fluorescent orange patterns appear in real time, and the eye-catching effect is amazing.
The special ink for printing this batch of printing is sponsored by Chuangyi Co., Ltd., which specializes in printing materials and environmentally friendly water-based varnish. Sales manager Xie Chilun said in the introduction: "Fluorescent anti-counterfeiting ink, Hong Kong called "invisible ink" (Invisible ink)
Ink), which is called “colorless fluorescent ink” in China, because the wavelength of ultraviolet light is different from the fluorescent pattern, and fluorescent color is generated when irradiated. "
The fluorescent inks sold by Chuangyi are mainly imported from foreign countries, and then processed by ourselves. There are several colors for customers to choose from, such as invisible yellow, invisible blue, invisible in Hong Kong. Red and invisible oranges. The invisible orange is the latest exclusive product developed by Chuangxin, and it is unique in the market. However, Mr. Xie said, "The development of invisible ink has reached its limit. This is what can be done now. There can be no further breakthroughs."
Printing fluorescent inks is not very difficult, and the printing press can be successfully completed. However, it must be noted that since the ink is transparent and only slightly colored, the ink must be thoroughly washed before printing to prevent the printed pattern from contaminating other colored inks, affecting the overall effect. In addition, in order to avoid the printing, the original color of the fluorescent ink appeared on the printed sheet, which affected the appearance. Mr. Xie suggested that the ordinary colored ink should be printed on the bottom before printing on the home before printing. "For example, if you print a yellow net before printing the fluorescent yellow, you will not have the above problems."
When it comes to the anti-counterfeiting use of fluorescent inks, he pointed out: "Invisible inks have a lot of anti-counterfeiting purposes as early as ten or twenty years ago, but later they gradually opened up and have begun to have the ability to make such special inks, such as other countries. The United States, Canada, Europe, etc. also have production supply. As the ink becomes more and more popular, its anti-counterfeiting efficiency has gradually been weakened. It is no longer possible to achieve 100% anti-counterfeiting." For example: "General products such as medicine Or other less expensive products will also use fluorescent inks to prevent anti-counterfeiting. As for some of the more expensive products such as cigarettes, wine, cosmetics packaging, in addition to the invisible ink logo, multiple anti-counterfeiting measures, such as laser film, Three-dimensional anti-counterfeiting marks, special printing effects, etc. As well as the Hong Kong banknotes that everyone is familiar with, the color of invisible inks has changed from the previous single type to more than three kinds of fluorescent fibers."
I don't know, when creating anti-counterfeiting inks, in order to prevent illegal use by unscrupulous buyers, we must follow a very strict procedure. "When we import ink from a foreign country, foreign producers will ask us to specify the business registration, anti-counterfeiting ink use and print category of the ink customer. The purpose is to prevent the ink from flowing to the bad printers of the counterfeit goods. The reputation of the manufacturer of raw goods. But in the past decade or more, China has opened up, and has a certain understanding of the technology of producing anti-counterfeiting ink. Although domestic ink manufacturers generally can keep their integrity, ink buyers can If you do this, you will not be able to predict it. For this reason, no manufacturer will rely solely on fluorescent ink for anti-counterfeiting."
Pearl ink offers alternative options
In addition to fluorescent inks, Chuangyi also produces pearl inks with high production cost and anti-counterfeiting and printing special effects, and is divided into three categories according to their use, including: eco-type pearls, water-based pearls and silk-screen pearls. Mr. Xie explained the difference between the three: "Coffee pearl ink can be used in offset printing presses, but the printed pearls are not strong; water-based pearls can be used in glazing machines to dye any paper into pearl cards, breaking In the past, there were only a few ready-made pearl cards for consumers to choose from. However, the screen pearl ink works best among the three, because the screen printing ink is thicker than the stencil and glazing machine."
Don't think that the silk screen pearl ink will have the best printing effect, and the price will be the highest among the three. Mr. Xie said that the most expensive is actually the K-type pearl ink, its price is several times higher than the silk screen ink. "Of course, you can do this kind of ink very cheaply, but the effect will be very far away, and there will be great difficulty in printing. When preparing the ink, we will use the better quality American pearl powder, in order to match the offset printing. The requirement of printing ink is thin." Pearl inks are available in a variety of colors, including pearl white, pearl blue and so on. However, because there are not many customer requirements, in addition to pearl white, Chuangyi currently produces pearl inks of other colors.
Printing pearl inks on different types of paper may have a big difference. "For example, printing on a book or cardboard, an effect may be very strong. A print may be similar to a print." To get excellent results, Mr. Xie suggested that the user choose a darker paper to make the pearl. The remarkable effect of the ink. He added: "In addition to silk screen printing and offset printing, the pearl ink has flexo and copper printing effects. For example, printing wallpaper is a kind of copper printing. The printed texture is heavy, the thickness is high, and the effect is excellent, but We still can't imitate it, we can only simulate it by screen printing to 80% or 90%."
Scent and temperature have unique characteristics
Careful attention to the prints on the market, such as children's books, is not difficult to find traces of scented inks and temperature-sensitive inks. They have the function of scenting and discoloring when they are wiped, which can arouse people's interest, especially children. . These two special inks are also represented by Chuangyi. "For fragrance inks, we offer four fragrances for the time being, including lavender, rose, snails, etc." 廿 A variety of special printed sheets with a printed sheet of Shido's pear pattern, exuded Aroma of Strawberry. "In general, if you don't rub it regularly and don't let the sun shine directly, the smell of the ink will last for one to two years." Mr. Xie said that customers generally apply this ink to recipes, and in the past foreign countries. The manufacturer will also provide different flavors, but in the later period, due to the reduction in customer purchases, and the purchase of one kilogram of fragrance ink can be applied for a long time, based on cost considerations, the choice of ink fragrance is gradually reduced.
As for the thermochromic ink that is discolored, it is mainly used in cigarette packets and medicines. It also has a high anti-counterfeiting effect ten years ago. Since the ink will become transparent when it is exposed to heat, when it is printed by the offset machine, the more the printed color disappears. "Printers can use the refrigerant to reproduce the color and see if the printed color is satisfactory." However, as with the scented ink, the ink purchase amount is at least one to two kilograms, and the ink application time of this capacity is quite long, so unless the customer Special requirements, and will be purchased in large quantities at a time, otherwise Chuangyi will not place special orders, and it will rarely sell to customers on weekdays.
Spot color inks meet Hong Kong needs
Chuangyi's main business is the deployment and production of spot color inks. They offer Pantone spot color inks, which are divided into two types, one is a cheaper Korean ink, and the other is a US ink with a density of 10% to 20% and a relatively high price. Mr. Xie explained: "If the ink density is high, even if it is printed a little thinner, it can meet the color requirements, and there will be no crisis of color mismatch. Take the US spot color ink as an example, even if it is mixed with transparent ink, varnish, etc. It will not dilute the original color of the ink. The ink with low concentration will have this shortcoming. In order to solve the problem of mismatch, the printer may try to increase the amount of ink, but this will only lead to a series of other problems in the printing press. ."
In response to the needs of Hong Kong printing houses, the spot color of the creative color is completely in accordance with the color of Pantone. "There are not a few companies selling spot color inks around the world, but it is not easy to find a set that meets the requirements of Hong Kong printing houses."
One of the spot color inks produced by Chuangyi is a film ink specially designed for film printing. "Offset ink printing film is quite difficult, it will appear scratched, not dry, easy to fall off, etc., but this special ink eliminates the above difficulties. However, it is not suitable for all films, such as printing PVC and PET. No problem, but PP, PE and other materials need to be tested."
Printing UV inks is quite difficult for most printers. "Printing ordinary inks, such as infrared drying, air drying, etc., can make the ink dry, but the UV is dried with UV lamps, and the printing requires a completely different technology from general printing. Some printers have been in business for more than 30 years. One printing UV also surrendered in real time. Some of them were not successful in printing, and they simply did not print and switched to ordinary ink printing film. Many printers also hope to try to modify the printing machine to print UV, but it is not successful. Currently on the market. There are also printing presses that print UV inks, but there are certain difficulties in printing. Basically, I have been in the business for so long, and I have never encountered an example of a new UV machine that can be printed by the printing company. The problem is that the ink is difficult to dry out. In theory, the ink will dry as soon as the UV lamp is turned on, but in reality it is not so simple. The problem involves the entire printing technology, which takes a long time to explain. So we sell ink To provide customers with after-sales service, explain to customers the correct way to use, especially anti-counterfeiting inks, more places to pay attention, customers need more powerful support."