What are the ways to deal with the image quality problems of DTG printers?

Table Of Contents

1. The image definition isn’t high.

Phenomenon: the image is fuzzy and unclear; there are incomplete graphics within the image: the fineness of the jet nozzle isn’t adjusted properly.

the answer is especially thanks to the mismatch between the inkjet resolution and therefore the grey fabric: thanks to the weaving method of the grey fabric, the surface can’t be as smooth as paper. Generally, dtg universal printer inkjet printing mostly uses 360-720dpi line inkjet. Fine fabrics like silk fabrics are rarely jetted to 1440dpi, and it’ll not be effective if the image definition is increased infinitely. And it’ll affect the rise in injection speed. to extend the problem of software and hardware, the resolution should be reasonably selected in step with the fineness of the pattern and therefore the finish of the grey fabric. the peak of the nozzle should be adjusted reasonably for fabrics of various thicknesses:

If the nozzle is simply too low, it’s easy to dam the nozzle and affect the colour of the pattern.

If the print head is simply too high, the ink moves with the print head to a specific height off from the material, which is able to produce a particular angle of parabola, the printed pattern borders are blurred, the accuracy is poor, and also the colors aren’t bright enough. Therefore, when printing, adjust the nozzle to the correct height.

2. The colour level within the pattern isn’t rich enough.

The phenomenon is: there are two knots within the pattern, the amount transition is unnatural; the expression of the colour tone isn’t strong; the amount is comparatively smooth, the explanation is that the dye ink is wrongly selected or not suitable for the grey fabric.

the answer is: dtg universal printer inkjet printing uses the quantity of ejected droplets to vary the colour level. As a jet printing for stippling, there’s no problem in expressing dark colors with high dot density. Sometimes there’s a sense of poor hierarchy. Or because of the blending of additional color points, the phenomenon of gray and dark color and reduced color brightness is straightforward to resolve the matter of light-colored areas. The effect of skyrocketing density will be better by using two types of dark and lightweight pigments, and double pigments. Another method is to pre-mix the colours. The so-called “spot color” jet printing. But it must be supported by a color measurement and matching system and an automatic sizing system, and therefore the color registration are limited.

3. During the printing, the surface grain size is coarse or there’s ink flow.

it’s caused by improper adjustment or damage to the ink jet port.

the answer is: the selection of printing accuracy. Generally, worsted fabrics are mostly printed with high-precision 360dpi~720dpi. Printing accuracy is directly associated with the resolution of universal printers. Use 720dpi resolution for cloth printing. The precision is already quite high, and general woolen fabrics may be printed with 360dpi~720dpi precision. this could increase the printing speed. And enough to satisfy the printing accuracy.

4. Dye ink seepage occurs after printing.

Because the amount of the material printing part can absorb ink is tiny. Under the effect of the capillary effect. Excess ink on the surface of the material diffuses along the capillaries between the fibers, causing the inkjet printing pattern of the universal printer to bleed. additionally to the composition of the ink itself, the most factor that affects the penetration of paint ink on the material. Fiber type and fabric structure and specifications are vital factors.

the answer is: treat the material with an appropriate thickener. Block the gaps between the fibers. Prevent ink from spreading along the capillary. For light and loose fabrics, the gap between the fibers is large and also the water holding capacity is poor. When inkjet printing.


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