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The Key Technology of Digital Printing in Cosmetic Packaging Carton Printing House
- May 10, 2018 -

      Electrostatic imaging digital printing technology Electrostatic imaging, also known as electrophotography, is based on the principle of laser scanning to form an electrostatic latent image on a north conductor. The carton printing plant reuses the Coulomb force between the charged toner and the electrostatic latent image. Realize the visualization of the latent image, finally transfer the toner image to the substrate to complete the printing, and attach and fix the small particle powder on the paper for imaging. Although the printed programs are different, the principles are much the same. Usually after converting the printed data into small dots, the dots are scanned by laser onto a rotating drum (the drum is made of a material that is highly sensitive to light and has a positive electrostatic charge. The part scanned by the laser is Turns negative static charge); When the drum is turned to the side of the powder trough, the powder is positively charged, so immediately attached to the laser scanning site, that is, the image to be printed; At this time, a paper with negative electrostatic charge is Rolling down appears, the electrode strength is slightly larger than the laser scanning onto the roller, so the powder on the roller is sucked onto the paper, and after heating and fixing, the printing is completed. This process goes once in a single color, and the color must go 4 times (the CMYK four-color powders each have a rolling reliance). The imaged powder is very fine, usually a solid powder.

      Ink jet imaging digital printing technology Inkjet printing uses different technologies, with small drops of ink on paper, combined imaging, droplets are very small. The position of the ink drop is accurately moved by the inkjet head, and a plurality of different color ink cartridges can be used to print a full-color image. It is generally required that the solvent and water in the ink can quickly penetrate into the substrate to ensure sufficient drying speed; the coloring agent in the ink can be fixed on the surface of the substrate as much as possible to ensure a sufficiently high printing density and resolution. Therefore, the amount of oil used must match the substrate to ensure good print quality.

      Ink jet imaging is classified into continuous inkjet and on-demand (pulse) inkjet in the form of ink. The ink flow ejected by the continuous ink jet is continuous and uninterrupted. Under the effect of pressure, fine ink droplets are dispersed at high speed through fine nozzles. When each drop of ink leaves the nozzle, it is charged with an electrostatic charge, and printing on the substrate is achieved by changing the presence or absence of an electric field. Demand ink is also called pulse-to-ink. It is an electrical signal that converts graphic information in a computer into a pulse. Then these electrical signals control the closing of the inkjet head, ie, the image area on the substrate is Blank space. Among them, the most representative ink jet technology is piezoelectric ceramic technology.

     Magnetic imaging digital printing technology Magnetic recording imaging technology and magnetic tape recording technology use the same recording principle, that is, the magnetism of magnetic materials is oriented in the direction of an external magnetic field to form a magnetic latent image; then magnetic toner and magnetic are used again. The interaction of the magnetic force between the latent images completes the visualization of the latent image; finally the magnetic toner is transferred to the substrate.

     The magnetic material used for the magnetic toner is mainly iron oxide, and the material itself has a deep color. Therefore, this method is generally suitable only for producing black-and-white images, and it is not easy to realize color images.

     Application of digital printing in carton printing plant

     Digital printing has a wide range of applications, such as commercial printing, intelligence printing, gift packaging printing, newspaper printing, color page printing, greeting cards, color card printing, can printing, short printing, and on-demand printing. Due to the characteristics of mathematical printing, it has occupied more and more shares in the printing industry. Especially in the European and American markets, it has formed a trend of keeping pace with traditional printing.

     Digital printing technology is more and more mature and attracts extensive attention in a way that is different from traditional printing technologies. At the same time, digital printing development is based on a new concept of the development of the market, and the traditional printing business also has essential differences, so with the printing industry in China toward the short version, rapid, personalized development in the field, carton printing factory figures Printing will gain rapid development in China with its huge market potential.

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