In the seminar, some people think that electronic imaging technology will be completely destroyed by inkjet in the near future and disappear from the digital printing market.
The inkjet technology is very diverse in terms of equipment, from photos and postcards on the desktop, all the way to 610, 915, and 1100mm widths, and from 1100 to 5000mm widths. It can be said that the size is universal. Electronic imaging is basically limited to printing widths of 315-320mm. It is mainly limited to the use of laser light and octagonal high-speed rotating mirror imaging methods, and the basic wide format of laser imaging toner printing is limited. In particular, the rotation speed of octagonal mirror is 18,000 per minute, which is the limit of mechanical rotation. With multi-beam imaging, the CTF of Fujifilm has been used. Due to the linear imaging of the platform, the central illuminance is strong. The laser illuminance along the optical axis becomes weaker toward the side, which also affects the light and dark performance. This time, the HP Indigo 10000 and its sister machines are very likely to switch to LED imaging to escape the size limitation, reaching a wide imaging width of 736mm. If the LED array at 1200dpi is larger, it will be very difficult to produce. The inkjet head is now limited to a length of 740mm across the banner. However, the inkjet head has X-axis and Y-axis mobile imaging, and the platform-type maximum 3.05 × 3.5 meters has also been done. This electronic imaging cannot catch up.
Electronic imaging is limited to flat sheets and thin rolls of 0.35mm white cardboard, even thicker materials will not work! Inkjet printing is not only a 50mm thick platform jet, to a variety of paper, plastic film, glass, stone, metal, wood, leather, etc., the media is very diverse, this kind of almost no taboo jet printing ability, electronic imaging only It can print on its own sheet B2, roll-to-roll paper width 750mm.
As for the use of imaging colorants and inks, everyone tends to use "nano pigments" synthesized by nano materials. This level of electronic imaging can be flat and densely laid on the printed parts, unlike the thick and thick grinding pigments, which must be used. The thicker toner layer is spread on the print, and the baking and curing temperature is also higher, which may adversely affect the paper and the printed medium. The resolution of thin lines, fine characters, and dots is now much higher using nano pigments. However, the electronic imaging toner must have the ability to be charged to make the charge attracting distribution of imprint imaging. If it can be changed from the current 5μ (thousandth of a millimeter) toner to 1 to 2μ fine powder, technically It can be done, but it is easy to cause color dust to fly in the environment, and it can not fall to the table or the ground for a long time. If the fine dust less than 5μ can not be removed from the lungs by the cilia in the lungs, the only thing is to rely on the mucosal layer. The secreted protein is sputum coated and discharged, which deepens the harmfulness to the body. Therefore, like Indigo's charge imaging ink, the developer charge coating pigment itself is made to be as fine as nanometers. Because it is mixed in liquid ink, the above-mentioned color dust drifting problem will not occur. For this reason, Xeikon old digital printers The factory used liquid ink on the Xeikon 8800 printer to improve safety and resolution, and competed with Indigo and inkjet. In general, if the pigment of 4-50 nanometers is used for inkjet, not only the resolution is improved a lot, but also the inkjet nozzle is not blocked, and the color density and color gamut performance of the nano pigments are also much better than the existing micron μ-level pigments. Can increase the color and color gamut performance of printed matter.
WEIHAI WEFISH OUTDOOR PRODUCTS CO.,LTD , https://www.wefishtackle.com