What is white ink printing?

 

What is white #ink# printing? Different from #CMYK color space ink, white ink has completely opaque covering characteristics. It can be mixed with a variety of other inks and special processes (such as fluorescent ink or glazing). According to the selection of the material, white ink can show a variety of unique effects. Whether it is small enterprises, medium-sized enterprises, large enterprises, or freelancers, graphic designers and artists, they can use white ink to create elegant and unique, personalized and visual products. Why is printing white ink important? When it comes to designing to stand out in dark, colored or transparent materials, white ink printing is crucial. But most printing presses cannot print white. The reason is that they use CMYK color models (green, magenta, yellow and black). White does not exist in CMYK, so printers leave these areas white and rely on the white of the paper itself. For standard white paper, this system works well. But what if you print it on black paper or transparent labels? The "blank" areas are no longer pure white, but black, transparent, or the color of the substrate itself -- the problem arises. The five advantages of white ink printing use white ink, you can print design on any tonal material. White ink makes colors bright on black paper, dark plastic and dark leather. This technology can print out bright, opaque images that never distort. It is also suitable for a variety of surface materials. Try printing on wood, acrylic, metal or leather. Small business owners can customize products, artists can explore various new materials. White ink can even make full-color printing more prominent on transparent objects. On glass or transparent vinyl substrate, the white bottom prevents the pattern from blending with the background. Adding white bottom below CMYK color can enhance color vitality. Especially on the non-pure white material, color is more vivid and accurate. If there is no white ink, the printing effect often appears dim or faded. By adding white ink layer to create texture effect, add three-dimensional sense to tactile design -- such as braille, relief logo or convex pattern. Customized printing service of white ink The following is an overview of the popular application schemes of whiteink on the market: White ink printing on dark paper -- white is an ideal choice for dark paper printing, which contrasts sharply and improves visibility. White ink printing on black paper - this design can be stunning. White black characters form a strong visual impact, its suction effect is not as good as color printing. Dark paper first white color printing brush -- if you need to show bright colors on dark substrate, the best solution is to print white to form opaque bottom layer, and then overprint color ink. CMYK ink has transparent characteristics, in the dark base material easy to cause color distortion. First white printing can improve opacity and color reduction accuracy. White ink printing on kraft paper - kraft paper texture is slightly rougher than other paper, except white kraft paper, which is mostly brown and black. Therefore, white ink printing has become a popular and efficient solution in kraft paper printing. White ink printing product requirements Baimo can be applied to all kinds of customized products, depending on your design conception and material selection. The following are the three most frequently received requirements for printing products of white ink, but do not limit them -- these are just examples. You may also find the practicality of baibing in other products, such as poker/card CARDS, board game accessories, etc. White ink printed business CARDS - similar to white ink envelopes, this process is also applicable to business CARDS, gift CARDS, CARDS/CARDS and CARDS. White ink printing paper box -- incorporating white ink printing into customized carton design can improve the packaging grade and highlight the unique style. Especially suitable for black or brown kraft paper boxes, the effect is particularly outstanding. White ink printing envelope - printed with white ink marks, slogans or return address on a dark envelope can create a subtle and elegant visual effect. The matching envelope includes black, midnight blue, wine red, rose powder and forest green. Printing technology When printing white ink, you need to choose the most appropriate process. The specific method depends on the budget, printing volume, product characteristics and selected materials. The following five white ink printing methods are the most efficient: White ink UV printing -- this technology USES a sheeting offset printing machine with special photosensitive ink, when UV light is shot can instantly solidified, achieve rapid drying. The effect is full and bright and completely covered with the background color of the printing effect. UV inkjet printing -- many professional label printing presses use UV curing white ink, can present bright and durable printing effect, the ink can firmly adhere to the surface of transparent materials, significantly improve the opacity and durability. White ink screen printing -- the use of special equipment, through the printing plate clip between the two layers of screen for image production, the ink permeates into the pattern. The process is exquisite, but only suitable for large size images and text and less printing, mass production costs are high, not suitable for photo printing. White foil hot stamping - hot stamping is a mechanical printing process by which color foil layer is attached to the substrate through hot pressure. Although metal colors (such as gold and silver) are the most common, we can also use other pigments. White foil hot stamping can create dazzling effect especially. UV printing, screen printing and stamping technology can be combined with punch, concave, film coating, glazing and local UV and other technologies to produce a strong visual effect. White toner printing -- white toner printer USES a special toner box to apply opaque white toner, which can be used as the bottom or highlight layer, so that dark or transparent media can also show bright colors. Its working principle is to add white layers below or above the CMYK color layer to improve the contrast and visibility on the non-white surface. Why is bai mo printing so difficult? As with color ink, white ink is composed of adhesives, solvents, dispersants and other chemical components to achieve the required viscosity and fluidity. There are usually differences in pigments or dyes that determine colors. Unlike color ink, white ink often adds titanium dioxide (tiotin) to ensure its covering force and brightness. As a white solid pigment, titanium dioxide has a much higher density (about 4.23 g/cm cubed) than most organic pigments (the density of organic pigments commonly used in color ink is usually between 1.0 and 2.0 g/cm cubed), and the particles are thicker. So what are the characteristics of white ink under this formula? More precipitation: as mentioned earlier, TiO2 in white ink is thicker than other pigments in color ink, and it is easier to settle if it is idle for a long time. The drying time is shortened and the viscosity is increased: although white ink and color ink use similar solvents and adhesives, their volume differences are significant. White ink contains a high concentration of fast drying solvent and adhesive, which determines that it dries faster and is stronger in substrate. This means that it can quickly evaporate and dry, firmly attached to the printing head, which can easily cause nozzle blockage problems.

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