The printing effect produced by DTG printer is extremely excellent, its color shows a strong sense of layering, fresh and bright colors, fine details, and high printing precision, creating a unique and mysterious atmosphere. As a kind of printing machine in the field of T-shirt customization, DTG printer is more clear and bright in color presentation compared with traditional printing and embroidery technology. It can print all kinds of patterns and text directly on the fabric, which perfectly fits the needs of personalized customization.
What are the advantages of DTG printing process?
Regarding the printing process of DTG printer, we further elaborate as follows:
This is a kind of printing technology that relies on DTG printer to directly spray the pattern on the T-shirt fabric, which can give the pattern more clear and delicate, colorful visual effect.
1) Colorful pattern: The process not only ensures that the pattern is bright and colorful, but also can accurately print extremely delicate and complex details, which is especially prominent in the processing of fine patterns, showing a significant advantage.
2) Green and harmless: It uses water-based ink, which is very different from the traditional printing process, to avoid the production of toxic substances, so as to ensure the environmental protection and harmless to human health during use.
3) Proper cost control: Under normal circumstances, the number of printing does not have a significant impact on the printing cost, which makes DTG printers especially suitable for personalized customization and small batch customization needs.
4) Flexible design: The process can easily achieve complex and varied, rich layers, colorful pattern design, but also very suitable for customized patterns with personal characteristics.
In addition, the digital direct injection process has pushed the color expression of the pattern to a new height, making T-shirts and other clothing more colorful in color, adding a strong fashion trend.
Therefore, if you want to incorporate rich color elements when customizing your T-shirt, then choosing a DTG printer is undoubtedly a smart move.
DTG printing Why do dark T-shirts take longer to print?
Because DTG printing machine needs to spray pretreatment liquid before printing dark T-shirt, then what is the deep reason for spraying pretreatment liquid?
There are three main reasons:
1.Inorganic chemistry is the composition of white ink
2.T-shirt fabric is cotton, organic chemistry
3.The white ink used for DTG printing cannot be directly adsorbed on the surface of the cotton cloth.
To be specific: (1) Before printing a dark T-shirt, you need to use white ink as a basis. The main component of the DTG printer’s white ink is peptide white powder, which belongs to inorganic chemistry, while the T-shirt fabric is cotton, which belongs to organic chemistry. These two components are difficult to produce chemical reactions, so that firmly adsorbed together. Therefore, it is not possible to create a chemical reaction between the white ink used on the T-shirt printer and the T-shirt fabric.
- The white ink used on the DTG printer is not corrosive and physically viscous, so the white ink is directly adsorbed on the T-shirt fabric, the color fastness is very high, and it is difficult to interact.
The composition of the pretreatment liquid is also inorganic chemistry, which can chemically react with DTG white ink. Therefore, a layer of pretreatment liquid is sprayed before printing, and the white ink reacts chemically with the residue of the treatment liquid in the T-shirt fabric, so that it is firmly adsorbed on the surface of the T-shirt, resulting in color fastness. Therefore, before using a DTG printer to print a dark T-shirt, it is necessary to spray a pretreatment solution.
Why is the DTG printing image not clear?
- One possible reason is the lack of clarity in the original image. Specifically, if the resolution of the original image used for printing is low, the final printed pattern will naturally appear blurred. In order to ensure that the clarity of the pattern is the ideal state, we recommend that the original resolution used when printing should be at least 300dpi.
- The printing accuracy of the DTG printer is also a key factor. If the printing accuracy of the device itself is not high enough, then no matter how clear the original image is, the final printing effect will be affected. Fortunately, we can further improve the quality of printing by using professional printing software to adjust the printing accuracy of the machine.
In addition, the state of the nozzle may also affect the print clarity. If you try to improve the clarity of the image and there is still no significant improvement, then the problem may be the nozzle. Setting the nozzle too low may cause blockage, which in turn affects the color expression of the pattern; If the nozzle is set too high, the ink will produce a certain Angle when the nozzle moves, which will cause the pattern boundary to become blurred. Therefore, when printing operations, it is particularly important to adjust the nozzle to the appropriate height.
Next, let’s discuss how to improve the color fastness of DTG printing.
Improving the color fastness of DTG printing is a comprehensive task, which needs to start from many aspects. Here are some effective methods:
(1) The selection of appropriate DTG ink is the cornerstone of improving the color fastness of various printing. The quality of the ink is directly related to the color fastness of the final print.
(2) The development of a reasonable printing process is also the key to ensure a variety of dyeing fastness. Specifically, ways to improve the color fastness of DTG printing include:
A. Proper pre-treatment of the fabric before printing. These pretreatment steps (such as cooking, bleaching, mercerizing, singeing, cellulase smoothing, etc.) can improve the smoothness and texture of the fabric surface, reduce friction resistance, and reduce floating color phenomenon, thereby effectively improving the color fastness of the fabric.
B. Properly strengthening the washing process is also an important means to improve color fastness. By strengthening the color fixing and soap washing steps, the washing fastness and rubbing fastness can be significantly improved. If necessary, professional detergents can be used to further enhance the color fastness. In addition, the use of softeners and fixing agents can also effectively enhance the color fastness.
(3) For fabrics dyed with reactive dyes, their color fastness is closely related to the depth of dyeing. There is almost a good linear relationship between the amount of color transfer and the depth of dyeing. When printing, whether the amount of ink used is supersaturated is a very important consideration. Especially in the printing of dark colors, although a higher amount of ink is required, it cannot greatly exceed the saturation value. The experimental data show that no matter how much dye is added when dyeing dark fabric, the color can not be further deepened; Digital T-shirt printing machines also follow this rule when printing. This is because the excessive dye can not be tightly combined with the fiber, and can only accumulate on the surface of the fabric to form a floating color, which seriously affects the color fastness of the fabric.
This article briefly describes some of the basic knowledge we need to know when printing DTG. If you need more detailed knowledge, you can consider consulting SUBLISTAR to provide more professional information.
