As a novel textile printing technology, paperless digital printing technology has played an important role in textile printing, and its printed products are also deeply loved by consumers. It does not consume paper, nor does it produce indirect water consumption and water pollution caused by paper consumption, which greatly reduces environmental pollution and conforms to the strategic policy of national sustainable development. More importantly, paperless digital printing technology saves valuable energy (such as water resources) from the source, and nearly 50% of printing and dyeing consumption cost is energy consumption. Saving energy means reducing consumption cost. Printed patterns are fine, clear, rich and natural, and products similar to photos and paintings can be printed. First of all, digital printing with paper consumes paper, for example, printing 1m cloth needs 1m paper, which not only consumes a lot of paper, increases consumption cost, but also indirectly brings water and its energy consumption, which will constitute environmental pollution; Secondly, ordinary paper digital printing can only print polyester fabrics, but not natural fiber fabrics such as pure cotton, which greatly limits its application scope.

Paperless digital printing can consume advanced products that are difficult to consume by traditional printing technology. As for natural fabrics such as cotton, because their natural fibers are hydrophilic, and disperse dyes that can be used for digital printing are hydrophobic and difficult to separate, natural fabrics cannot directly prevent digital printing. However, there are still some defects in this paper digital printing process. At the same time, paperless digital printing is to make dyes into printing paste, and then print patterns on special substrates through printing. After the substrate is attached to the fabric, it is heated to transfer and fix the pattern on the substrate on the fabric to obtain printing waste. Tang needle printing is divided into two types according to the process: polyester and thermal transfer; Chemical fiber. Active direct injection; Acid direct injection; At present, the main digital printing process on the market is thermal transfer, which is similar to gravure printing. It is mainly printed by printer, and transferred at high temperature in transfer paper, which is suitable for ceiling. Traditional printing, electronic engraving and other high-temperature printing processes of transfer paper are suitable for mass color printing, and have the advantages of bright colors and low cost. Disadvantages: color matching is troublesome and printing is troublesome. Digital printing is a new printing technology, which uses inkjet printer to realize printing technology.