1. The quality analysis, improvement method and treatment plan of printing image are as follows:
The image clarity is not high. The phenomenon is: the image is blurry; there are incomplete graphics in the image: the fineness of the spray nozzle is not adjusted properly. The solution is mainly due to the mismatch between the resolution of the inkjet and the grey fabric: due to the way of weaving the grey fabric, the surface cannot be as smooth as paper. Generally, inkjet printing mostly uses 360-720dpi line inkjet. Fine fabrics such as silk fabrics are rarely ink-jetted to 1440dpi, and if the image clarity is infinitely improved, it will not only be ineffective. And it will affect the increase of the injection speed. To increase the difficulty of software and hardware, the resolution should be reasonably selected according to the fineness of the pattern and the smoothness of the grey fabric. The height of the nozzle should be adjusted reasonably for fabrics of different thicknesses: the nozzle is too low, it is easy to block the nozzle and affect the color of the pattern: the nozzle is too high. The ink moves left and right with the print head. There is a certain height from the fabric. A parabola with a certain angle is produced. The border of the printed pattern will be blurred. Poor accuracy. The colors aren't bright enough either. So when printing. Adjust the nozzle to the correct height.
Second, the color level in the pattern is not rich enough
The phenomenon is: there are two wounds in the pattern, the layer transition is unnatural; the tone expression is not strong; the reason for the smoother layer is that the dye ink is improperly selected or not suitable for the grey fabric. The solution is: inkjet printing changes the color level by the number of sprayed droplets. Jet print as stippling. There is no problem with expressing dark colors with high dot densities. Sometimes it feels a little bit layered. Or due to the mixing of excess color points, it is easy to produce a dull color and a decrease in the brightness of the color, so as to solve the problem of the light-colored area. The effect of increasing the density by using two kinds of dark and light color materials and double color materials is better. Another way is to pre-mix the shades. The so-called "spot color" jet printing. But it must be supported by a color matching system and an automatic pulp mixing system. And the color registration will be limited.
3. During the printing process, the surface particle size is relatively coarse or there is flow ink.
Formed due to improper adjustment or damage to the ink jets. The solution is: the choice of printing accuracy. Generally worsted thin fabrics are mostly printed with high precision 720doi~720dpi. Printing accuracy is directly related to printer resolution Use 720dpi resolution for fabric printing. The precision is quite high, and the general woollen fabrics can be printed with 360dpi~360dpi precision. This both increases printing speed. And enough to meet the printing accuracy.
Fourth, the dye ink seeps after printing
Due to the small volume of the printed part of the fabric that can absorb ink. under the capillary effect. The excess ink on the fabric surface spreads along the capillaries between the fibers, causing the inkjet print pattern to bleed. In addition to the composition of the ink itself, the main factor affecting the bleeding of the paint ink on the fabric. Fiber type and fabric structure and specifications are also very important factors. The solution is to treat the fabric with a suitable thickener. Block the spaces between the fibers. Prevent the ink from spreading along the capillary For thin and loose fabrics, the gap between the fibers is large and the water holding capacity is poor. In inkjet printing.