Dyes are used in the manufacture of traditional inkjet ink coloring agent, and now some of the lower-priced inkjet printers still in use. The dye can be dissolved in a liquid carrier - water or solvent, exhibit high saturation and bright colors, but their poor light. On the other hand, the new pigment ink light is good, but it must be polished to such an ink-jet head so that the particle size to match the diameter of the nozzle. Nozzle diameter in the range 20-80μm, depending on process requirements and purposes: for the industrial production of the pigment particle size should be less than 1μm; for office areas should be less than 200nm. For screen printing, the pigment particle size is only limited by the size of the mesh, and should be fine-tuned in accordance with the halftone costs.
Although screen-printing technology is not as attractive as the digital printing technology, but the use of a screen-printing digital technology will demonstrate its great advantage. Screen printing adaptability inherent with digital technology, will be the production value profit presses. Screen printing is not to give up, but to consider expanding its capacity to create profits. Think about what you can achieve screen printing and digital printing impossible, then we can go along the way of such.
Extrusion injection (now stopped using this term) process which will not solve the dilemma?
Digital printing image replication does screen printing has a great impact, because customers screen printing requirements are too high, in the same edition of the living, and they no longer accept a golf-like outlets and from flushed to sallow flesh tones, but want to get a bright and consistent color, which is the high-end digital printing can be achieved.
Currently, the screen version made by direct application technology, digital technology and screen printing is a viable combination Practice. In the system as technology applications, application of heat wax halftone imaging and direct copy technology has replaced the traditional large-format photographic imaging conventional technology Positive film. As these two technologies Which is better, or a point of view of the problem - direct imaging plate technology superior in terms of speed and economy, and hot wax technology is in terms of quality and flexibility advantages. All plate system should have the best performance in the final application, if the actual application is not good, even the best technology is wasted. Fortunately, people will take advantage of these two complement each other so as to achieve satisfactory results.
Direct printing down technical requirements for humidity control environment, which is crucial. In addition, rapid photographic emulsion material plate technology can not be used with water-based ink, and photographic positive image used in this process can not tolerate a little pinholes and blemishes, it is 40lpi screening lines, the optimum tone reproduction range in 2 98%. The hot wax stencil imaging device is being increase its speed, and regular maintenance on the nozzle can maintain image quality and reliability.
For both techniques, the screen frame stability is the key. The frame deformation will direct sun light image shift the focus, while in hot wax plate-making process, even if the use of new equipment, the image will also follow a curved screen frame is deformed, if the revised version is bound to lower productivity .