1, learn drawing software: generally, you need to learn two CORELDRAW-9, ADOBE PHOTOSHOP. Use layers, masks,? Channels, filter usage skills, text and path function usage, and application of common color tools. Able to independently engage in drawing and repair. Drawings (drilling, modification), tieback position making, etc.
2. Understand the differences between various fabrics and various prints, as well as their advantages and disadvantages, and find a matching printing method. Because different fibers and different tissue structures dye the same color, they will show completely different effects.
3, learn to control printing related equipment, such as scanners, printers, platens, ironing machines, etc.
4, the principle of jet printing:
Continuous jet CIJ (continuous inkjet)
The principle of continuous jet is to apply high-frequency vibration pressure to the ink, so that the ink is ejected from the nozzle to form a uniform and continuous droplet flow. There is an electric field at the nozzle that changes synchronously with the graphic photoelectric conversion signal.
The ejected droplets are selectively charged in the charging electric field. When the droplet flow continues to pass through the deflection electric field, the charged droplets are deflected by the electric field, and the uncharged droplets continue to fly in a straight line.
Droplets flying in a straight line cannot reach the substrate to be printed, but are recovered by the liquid collector. Charged droplets are sprayed onto the substrate to be printed.
On-demand injection (DOD)
The working principle of the on-demand inkjet printing system is that when printing is needed, the system applies high-frequency mechanical force and electromagnetic thermal shock to the colored ink in the nozzle to make it form tiny droplets to be ejected from the nozzle, and the computer controls the ejection to the set pattern.
The most widely used technology of on-demand ejection is thermal inkjet technology, which relies on thermal pulsation to generate ink droplets, and the computer controls the heating resistance wire to reach the specified temperature, so that the printing ink is vaporized (atomized) and ejected from the nozzle.
Another DOD technology is the piezoelectric ejection system, which applies a potential to the piezoelectric material through computer control, making the piezoelectric material compress in the electric field direction and expand in the vertical direction, thus making the printing ink eject.