HP digital printing machine breaks the traditional printing machine, and realizes many advantages by virtue of its electronic ink. It is a great progress in HP science and technology. Let us introduce the advantages of HP digital printing machine electronic ink.
1, high brightness, high definition and durability. Manufacturers use the same ingredients as traditional inks, but only charge inks, make electronic inks. Therefore, electronic inks are similar to traditional inks printed on paper, but the brightness and contrast are high when matched with paper. And can have a 180 degree viewing angle. It can be clearly seen from the results of high magnification that the image formed by the electronic ink has a sharper sharpness than the image formed by the electrostatic copying dry powder. This advantage is clearer at the edges of printed continuous-tone or fine-printed text images. The clean and unpolluted background of the electronic ink image is also noteworthy. This advantage stems from the way in which tiny particles of electronic ink are transferred during printing.
2, dot gain and color consistency. Dot increase refers to the tendency of printed continuous harmonic image to spread under imprint. The HP press digital color offset press controls dot gain. The HP press has a calibration function that allows the printed dots to be within the required size range. In addition, the Indigo press automatically adjusts the optimal density (such as the darkness of the look) and the size of the dots to give each print the same look.
3. Image smoothness. Many people think that the quality of offset printing is the image smoothness, which is not the case. The key to quality is the uniformity of the image. HP digital presses, unlike electrostatic dry presses or copiers, can only output images of the same smoothness regardless of the material of the paper, which results in varying smoothness (such as solid dry powder coverage) and highlighted areas in the dark areas ( There is no area covered by dry powder). The electronic ink image matches the smoothness of the substrate, and as with conventional offset presses, it produces an effect from rough to dark to high brightness. According to the different figures and the smoothness characteristics of the offset printing machine, the actual operation shows that the ideal smoothness of the electronic ink can basically meet the requirements of various papers except ultra-smooth paper. For medium smoothness papers, electronic inks are superior to lithographic inks, but lithographic inks are superior in the field of ultra-smooth paper.
4, color difference. Electronic inks can be printed according to international color standards. These standards are all based on the four-color standard basic color CMYK (green, yellow, black, black). Lithographic printing uses different ink formulas according to different standards, while electronic inks use only one set of colors for different standards. The electronic ink adjusts the concentration of the ink (concentration of color) by electrons to suit different needs. The special properties of the electronic ink and the charging characteristics of the ink determine its unique function on a four-color basis. In addition to printing the four-color base color, the electronic ink of the spot color system extends the color gamut to a color gamut that cannot be achieved by the four-color base color. The spot color ink system is capable of six-color printing and the imaging uses a primary transfer technique.
5, instant drying. Because the electronic ink will solidify as it is transferred to the substrate, the finished product will dry out when leaving the HP press. The electronic ink does not need to be further dried. The electronic ink can be cured without emissions without further drying. At the same time, the electronic ink only needs 100 ° C, and the relatively low temperature makes the substrate not heated, damaged or curled.
     It's very easy to use a HP digital press, for example: it can be used for web printing, and it is expected to be used for glossy advertising paper and other large-format labels in the near future. Today, electronic inks are beginning to work with other electronic devices. For example, E-Ink recently announced that it will work with IBM to develop a world-class SVGA electronic ink display. It is estimated that electronic ink displays may be put on the market in the last year or two.
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