1. The origin of offset printing In 1969, the Germans invented lithography, and then the metal plate printing was successful. At the beginning, only the graphics were printed directly on the paper, and the indirect printing was much better than printing directly on the rough paper, so a blanket was added Over time, the roller of the bag has formed the current offset printing. 2. Components of Offset Press Transmission system, paper conveying part and paper delivery mechanism, printing part and paper receiving part. 3. Offset printing completion process A stack of paper is fed forward one by one by Feida, and the paper is sent to the front gauge and side position by the paper conveying device, and then the paper is passed to the impression cylinder by the delivery tooth The cylinder squeezes the paper and squeezes it through the rubber cylinder and the impression cylinder, that is, the image of the plate is transferred to the rubber cylinder), and the printing is completed. The paper finishing mechanism collects the whole paper and completes the printing work. 4. Specification and brand of offset press Offset presses have folio, quadruple, eight, and full boot. The domestically advanced ones are the offset presses produced by Beijing Renmin Machinery Factory, or Beiren Machine for short, as well as Yingkou 1800 series and Weihai series; the joint venture is Weihai Bintian series; we have more contacts with Heidelberg and Roland , Ban Le, Japan's Komori Mitsubishi. Hair Scissors Set,6.0 Inch Barber Scissors,440C 440C Hair Scissors,Professional Hair Scissors Heb Zhangjiagang Mister Tools Co., Ltd , https://www.mingshiscissors.com