Process Classification of Digital Printing

Classified By Printing Method
1.Thermal transfer method:
Thermal transfer printing is an emerging printing process. Thermal transfer printing first prints ink on paper (coated), and then uses thermal transfer printing machinery to transfer the pattern on the paper to textiles.
The process printing method is divided into two parts: transfer film printing and transfer processing:
The transfer film printing adopts dot printing (resolution up to 300dpi), and the pattern is printed on the surface of the film in advance. The printed pattern has rich layers, bright colors, kaleidoscopic, small color difference, good reproducibility, and can meet the requirements of the designer, and Suitable for mass production.
The transfer process transfers the exquisite patterns on the transfer film to the surface of the product through a heat transfer machine (heat and pressure). The ink layer is integrated with the product surface after molding, which is vivid and beautiful, which greatly improves the quality of the product.
Fedar FD61915E is the best in digital printing machine: it adopts thermal transfer printing technology. It is equipped with 15 Epson I3200-A1 printheads, which can print 610 sqm/h, and the platform accuracy error is 5 threads. The use of ultra-high-density ink and 31 grams of paper is used, which saves costs even more. It is favored by the majority of large-scale digital printing processing factories.

2.Digital Direct Injection Printing:
Digital direct-injection printing is suitable for reactive, acidic, paint, and dispersive inks. Digital direct-injection printing is a process of direct printing on semi-finished textiles that have been sizing.

3.Cold Transfer Method：
Like thermal transfer, it is necessary to print ink on paper first, and then use special machinery to emboss the paper and fabric to realize the transfer of patterns. The embossed fabric has two treatment methods, one is traditional steaming, washing, setting and other traditional processes; the other is cold reactor chemical reaction treatment and fixation (the fabric needs to be chemically treated in advance).

Classified By Dyes and Processes
1.Decentralized Digital Printing：
At present, more than 50% of the printing inks are disperse dye inks, which are used for printing on polyester fibers and other chemical fiber fabrics; disperse dyes are a type of low water solubility and are mainly dispersed in water with the help of dispersants when printing. State-existing non-ionic dyes.

2.Reactive Digital Printing：
Reactive dye ink accounts for about 29%, mainly used for silk, cotton, rayon and linen fabric printing; reactive dyes, also known as reactive dyes. This type of dye separation contains genes that can chemically react with the fiber. When printing, the dye reacts with the fiber, forming a covalent bond between the two to form a whole, which improves the fastness to washing and rubbing.

3.Acid Digital Printing：
Acid dye ink has a small specific gravity and is mainly used for printing on wool, nylon, silk and other fabrics. Acid dyes are a type of water-soluble dyes with acidic groups in the structure, which are printed in acidic media. Acid dyes have bright colors and complete chromatograms. It is mainly used for dyeing and printing of wool, silk and nylon. It can also be used for leather, paper, ink, etc.

4.Pigment Digital Printing
The usage of pigment ink is relatively small, less than 2%, mainly including paint, latex, uv and so on.

Classified by fabric composition
1. Digital printing on cellulose fiber fabric：
Digital printing based on cotton, including hemp, rayon (tencel, modal, bamboo fiber), etc. also use digital printing technology;

2. Digital printing on polyester fabric：
Digital printing based on polyester, including dispersion transfer and direct injection digital printing for acetate fiber.

3. Polyamide fiber fabric digital flower：
Nylon-based digital printing, mainly acid digital printing.

4. Protein fiber fabric digital printing
Digital printing is mainly based on silk and wool, mainly reactive and acid digital printing.

5. Digital printing on blended fiber fabrics
Digital printing based on polyester-cotton, nylon-cotton, and polyester-viscose, mainly using paint digital printing technology.