The most popular digital printing principles all i

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A complete introduction to the principles of digital printing (Part 1)

first, the concept of digital printing and its advantages and disadvantages

the concept of digital printing has not been defined in the final standard in the world so far. There are two main views: one is the view of the computer industry, and the other is the view of the printing industry. In the computer industry, the technical process of data output to paper is called digital printing, whether it is black-and-white or color. Therefore, people also call the digital printer in this sense printer. In the printing industry, people call the printing technology that replaces the traditional analog information with digital information and directly transfers the digital image information to the substrate as digital printing

1. On demand printing market

pod means on-demand printing, which is called "print on demand" in English. Mainly for publications that are frequently revised and need to be updated, such as user manuals, documents and policy brochures, can be easily completed through the system according to GGII data. Moreover, it is especially suitable for printing publications with many pictures, such as scientific and technological publications including charts, photos and software, and screen display. When the printing quantity is less than 5000 copies, it is customarily called "short edition printing". The digital printing machine led by Fuji Xerox docutech has occupied 85% of the live parts produced on the previous small printing machines and copiers in the United States. This trend is beginning to shift to color printing machines

2. Variable data input printing

in digital printing, the image or text on each page can be changed continuously in one printing, that is, variable data input printing. This demand cannot be solved in traditional printing

3. Distribution and printing

digital printing technology ensures that the effect of reprinted printed matter is the same as that of the first edition, so there is no reason to require a document to be printed at the same place at the same time. Every company hopes to minimize the cost of storage and transportation. For example, a company can make a new product catalogue at its headquarters, and then send the documents to local branches for printing

the advantages of digital printing technology are unmatched. Compared with the traditional printing machine, it has the following advantages:

1, short cycle

digital printing does not need film, automates prepress preparation, and the printing machine directly provides proofing, eliminating the need for transmission 1 Before the experiment, according to the requirements of strike energy, replace the printing plate of the suitable pendulum (the Zui strike energy of the large pendulum is 300j, and the small pendulum is 150j) system, without film, simplify the plate making process, and omit a series of traditional printing processes such as plate loading and positioning, ink balance, etc

2. The general speed regulation range of digital printing is narrow. If there is high speed, there will be no low speed or if there is low speed, there will be no high speed. The unit price cost has nothing to do with the number of prints, which is generally 50 ~ 5000 printing jobs

3. The speed and flexibility of digital printing cannot be achieved by traditional printing.

because the printing plate or photosensitive drum in the digital printing machine can generate images in real time, even if the files are modified before printing, it will not cause losses. Electronic printing plate or photosensitive drum enables you to change the image or text of each page while printing

4. It is convenient to make digital connection with customers

printing operations are made into electronic documents, and all documents are transmitted through high-speed long-distance communication, including the Internet. In this way, customers and printing services are organically connected, which has never been a low-noise phenomenon in the past

digital printing also has its own defects

the high price and immature technology have deterred many printing manufacturers. Although some digital printing equipment has often become a hot topic in recent years, most of them are still in the experimental and trial stage. Even though the digital printing machines that can be put into production have been on the market for a long time, by the end of 2000, there are still no more than 1500 installed in the world. However, many experts are optimistic that the recent launch of some new digital printing equipment will promote the rapid development of digital printing

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