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Two important factors affecting high-speed digital inkjet printing

June 17, 2021

Fedar heat transfer digital printing machine and Fedar direct digital printing machine have been widely used in the fields of digital printing, textile, advertising, home furnishing and personalized design. The products have passed ISO9001 quality system certification and CE certification, winning the majority of consumers Trust. Through cooperation with world-renowned nozzle manufacturers and software suppliers, the latest and most practical technology is integrated into the product, and it has the world's leading clothing plate making system, digital printing system, textile printing and dyeing system, advertising inkjet system, and the overall printing and dyeing industry solution.

Heat Transfer Digital Printing Machine

In digital inkjet printing, the high-speed jetting of anti-counterfeiting ink is a decisive factor, which determines whether the textile substrate can be successfully printed. Therefore, the anti-counterfeiting ink must be carefully formulated according to the formula, so that the physical and chemical properties of the anti-counterfeiting ink used are in line with the best process parameters, ensuring effective printing operations and obtaining satisfactory printing patterns on the surface of the fabric.

 

The anti-counterfeiting ink formulations used for high-speed digital inkjet printing require balanced performance to ensure the best stability before the anti-counterfeiting ink is applied, so that high-speed jetting can run without obstacles. When the anti-counterfeiting ink hits the surface of the fabric, the anti-counterfeiting ink droplets should have satisfactory wetting/absorption characteristics. This can be controlled in the pre-press pretreatment of the fabric.


Obviously, the anti-counterfeiting ink formula must be suitable for a specific type of inkjet printing system, whether it is based on piezoelectric drop-on-demand (DOD) or thermal jet, or based on continuous inkjet technology. About 80% of digital inkjet printers used in textiles use piezoelectric drop-on-demand, and the rest are mainly thermal jets. Therefore, the ink in the anti-counterfeiting ink formula must be matched with the printing machine to give textiles satisfactory properties (such as color and dye fastness), to perform efficient printing at the lowest cost, and to provide corresponding services for possible technical problems.

 

Mirror ink performance and requirements
The formulation of high-speed digital inkjet printing inks is different from the formulation of conventional traditional dyeing and printing dyes or coatings. Even if the same dyes are used, their formulations are different. Ink for inkjet printing is a high-tech product and plays an important role in the forefront of textile printing technology. At present, certain chemical companies attach great importance to the research and development of inks for digital inkjet printing of textile materials. This is a creative field. It is the expertise of applying high-tech chemicals to textiles. It provides printing workers with scratch-off ink formulations to achieve the correct balance between the technical requirements of the ink and the quality of the printing.

 

Dyes for digital printing
Traditional textile printing pastes may contain 30%-50% of dyes, and the rest are diluents and dispersants. The dyes and coatings used in digital inkjet printing inks must be of high purity and be ground to a fine particle state. Degree <1μm. The color performance of the dye chromophore must be very strong, because the concentration of the dye in a typical commercial printing ink is only about 10%. In piezoelectric inkjet printing, the maximum amount of anti-counterfeiting ink applied in a single channel is only about 20g/㎡, and the dye remaining on the fabric is 2g/㎡, which is compared with the dye uptake rate of 100g/㎡ of traditional screen printing , The dye left on the fabric, the latter is 5 times more than the former.

Heat Transfer Digital Printing Machine

Although some manufacturers use printing heads derived from industrial digital printing machines, most inkjet printing machines still use printing heads originally designed for the printing industry because it may be more reliable under textile printing operating conditions. Piezoelectric printing heads can take into account the relationship between resolution and speed, and provide a great range of applications for the development of new inks. Using CMYK (cyan, magenta, yellow, black) color gamut is not enough for digital inkjet printing of textiles. Six colors may be used, but eight colors are usually used more.

 

At present, acid dyes can be used in inkjet printing to print sportswear, swimwear, underwear, flags and accessories; reactive dyes can be used in casual clothes and underwear; and disperse dyes account for about 50% of the digital textile printing market, a large Most of them are used as transfer printing inks to print clothing, flag cloth, automotive and furniture decorative fabrics.

 

Zhengzhou New Century Digital Technology Co., Ltd.,- (Fedar Printer:www.fedar.com.cn)is a high-tech enterprise specializing in research, manufacture, sale and service of sublimation printer,digital textile printer ,inkjet heat transfer printing machine and related consumables.

 

By cooperating with world famous printhead manufacturers and software suppliers, we integrate exquisite and practical technology into our products. Up to now, fedar printer has independently developed a series of mature products.

Heat Transfer Digital Printing Machine