The hottest ink tends to be high-tech

2022-08-26
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Ink development tends to be high-tech

1. Anti counterfeit ink: realize special printing needs

at present, there are mainly two kinds of anti-counterfeiting inks used in many tobacco and alcohol commodities in China: first, offset printing and gravure printing are used to print invisible anti-counterfeiting marks with fluorescent anti-counterfeiting inks on paper or plastic film, including green, red, yellow and other fluorescent invisible inks; The second is to use temperature change anti-counterfeiting ink, which can change from blue, purplish red, black to colorless

in order to meet the needs of the market, a solar color changing fluorescent anti-counterfeiting ink and a hand temperature color changing fluorescent anti-counterfeiting ink that can be used for tobacco and alcohol packaging are introduced to the market. The following are their main features. First, it adopts high-tech materials of sunlight type color change and hand temperature type color change, which has the controllability of raw materials. Second, the ink has many components, many production equipment, large investment, complex process, and difficult processing, which is difficult for ordinary people to copy. Third, it has multiple anti-counterfeiting functions, such as intuition, sunlight discoloration, hand temperature discoloration; Concealment, fluorescent discoloration. Fourth, it is convenient to identify. It can be identified by sunlight irradiation or hand temperature heating, and the common ultraviolet light banknote detector can also be used

this new anti-counterfeiting ink has the following technical characteristics: first, it adopts the principle of chemiluminescence to realize the uniqueness of fluorescence detection. According to the needs of customers, special fluorescent compounds with patent protection are used, and the unique fingerprint identification function is used. The ink with unique spectral characterization achieves the purpose of protecting products from counterfeiting. Second, the stability of fluorescent materials with sunlight discoloration and hand temperature discoloration is very high, which overcomes the shortcomings of existing anti-counterfeiting inks that are prone to aging. Third, it has the specificity of product brand specific anti-counterfeiting ink formula locking, that is, according to the needs of customers, use highly unique and representable anti-counterfeiting ink products to achieve the purpose of protecting products. Fourth, the new anti-counterfeiting ink can directly print invisible or colored anti-counterfeiting graphics and texts on coated paper, cardboard, plastic film and other materials used for cigarette and alcohol packaging by any printing method

2、 Electronic ink: achieve digital reduction in the production of packaging waste quantitative offset printing

in "Digo's color digital offset printing machine, which sells eco-friendly cloth shopping bags in some high-end supermarkets, provides a unique combination of functions based on its color digital offset printing machine technology and operation. Indigo printing machines all use electronic ink - Indigo's unique liquid ink. Electronic ink contains charged liquid ink particles, but at the same time, we need to ensure the safety of users. It enables electronic control of the position of printing particles in digital printing Make it possible. Electronic ink can reach very small particles (1-2 microns). Such small particles enable printing to achieve higher resolution and smoothness, sharpen image edges, and form extremely thin image layers. (1) Standard basic color CMYK (green, magenta, yellow, black); (2) The six color setting of wide color gamut increases orange red and purple, so that the color reproduction ability is much higher than that on the basis of the original four colors; (3) Indigo spot color system compatible with Pantone; (4) Opaque white coating of colorless substrate material; (5) Fluorescent ink

this digital offset printing technology, with its advantages such as electronic ink, has achieved many advantages:

(1) edge sharpness and clarity. It can be clearly seen from the results of high magnification that the image formed by electronic ink has clearer sharpness than that formed by xerographic dry powder. This advantage is more obvious when printing continuous tone images. The sharpness of electronic ink image is clearer in the edge of continuous tone image of intermediate color or text image of fine printing. The clean and pollution-free background of electronic ink image is also worth noting. This advantage comes from the tiny particles of electronic ink and the way in which electronic ink particles are transferred during printing

(2) point increase and color consistency. Dot increase refers to the trend of continuous harmonic line image diffusion under embossing. Indigo digital color offset printing function control point increases. Indigo printing machine has correction function, so that the printing point can be within the required size range. In addition, indigo printing opportunity automatically adjusts the optimal density (such as the darkness of the appearance) and the size of points, so that each print has the same appearance

(3) image smoothness, but its raw materials often come from non renewable energy such as oil. Many people think that the key to the quality of offset printing lies in the smoothness of the image, which is not the case in fact. The key to quality lies in the uniformity of the image. Indigo printer is different from electrostatic dry powder printer or copier. It can only output images with the same smoothness regardless of the material of the paper. In this way, there will be changed smoothness (such as solid dry powder coverage) and brightened areas (areas without dry powder coverage) in the dark areas. The electronic ink image matches the smoothness of the substrate. Like the traditional offset press, it can produce the effect from rough to dark to high brightness. After dividing and comparing the smoothness characteristics of different numbers and offset presses, we show that the ideal smoothness of electronic ink can basically meet the requirements of all kinds of paper except ultra smooth paper. For medium smoothness paper, electronic ink has more advantages than lithographic ink, but lithographic ink has more advantages in the field of ultra smooth paper

(4) color difference. Electronic ink can be printed according to international color standards. These standards are all based on the four-color standard basic color CMYK (green, magenta, yellow, black). Lithography uses different ink formulas according to different standards, while electronic ink uses only one set of colors for different standards. Electronic ink adjusts the ink density (color density) to meet different needs through electronics. The special properties of electronic ink and its charged characteristics determine its unique functions on the basis of four colors. In addition to printing four-color basic colors, the electronic ink of spot color system expands the color gamut to the color gamut that four-color basic colors cannot achieve. The spot color ink system can carry out six color printing, and the imaging adopts one-time transfer technology

(5) immediate drying. Because the electronic ink will solidify when it is transferred to the substrate, the finished product will dry when it leaves the indigo printer. Electronic ink can be cured without further drying. At the same time, the electronic ink only needs 100 ℃, and the relatively low temperature will prevent the substrate from being heated. Damaged or curled

(6) non fading under light. The pigment particles encapsulated in the plastic resin of electronic ink will prevent the chemical components of the pigment from being oxidized or affected by moisture, especially under the strong ultraviolet radiation of eyes. Electronic ink has advantages over traditional offset ink in this regard

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