New Application Technology Introduction: Electromagnetic Printing (2)

Fourth, image transfer

The image transfer is based on 60% mechanical pressure and 40% static electricity, and the resulting transfer efficiency is about 80-85%. The use of electrostatic electricity in certain respects is quite related to the humidity of the air. If you want to get the ideal transfer, the surface layer of the printed material must not have too high humidity. If the toner resistance is about 103 W/cm, and the electrical conductor is charged The voltage is 500 - 1000 V, and the selected concentration is 1.1 to maintain the resistance at 1012 W/cm. If the toner is charged first, the selected value of 1.3 and 1.1 will reduce the resistance of the paper to 1010 W/cm.

Fifth, the image is fixed

The method of image fixation is the same as any dry powder printing technique except that it is dried at a high speed. Fixing requires the use of radiant heat or a xenon flash to turn the toner into a semi-liquid state. In the low-speed device, the heating roller can be used, and in the magnetic printer, radiant heat is used to fix the image. In recent years, the flash-fixing method has been cited, which has the advantages of significantly lowering the paper surface temperature and also reducing many problems caused by heat, such as reduced heat energy consumption, maintenance fees, and the like. The next processing unit on the drum is the cleaning station, which removes the remaining toner that has not been transferred to the paper on the drum. In fact, the toner is sucked into the bottle using a steel roll with a scraper and a vacuum suction device.

The last step is to remove the magnetic image on the drum, that is, to use a low voltage wiper to replace the bulb in the electronic copying machine and the high voltage pre-charged toroidal discharge wire.

Sixth, the commercial application of electromagnetic printing

Electromagnetic printing presses can be widely used in the printing industry, from the text printing to the traditional printing environment, its reliability, simplicity, and low operating costs, will be the printing plant to use this technology advantages. A wide range of applications, such as: very high printing speed, a wide range of printable materials, a simple mechanical structure, high durability and stability. Unlike early printing technologies, electro-magnetography promises much room for growth in the future. Today's presses can print 800 pages per minute and 1,400 pages in the future. And now is engaged in multi-color printing and new high-resolution research, I believe that in the 21st century, this type of printing will be able to become the leading position in the printing industry, in a variety of materials to complete a variety of high-speed print printing operations.