For a long time, the media has less and less reports on the sublimation printer, which can not be described too much. However, the response of the market is quite different. Sales picked up steadily, unexpectedly.
Thermal sublimation is a very special development technology. It uses thermal energy to transfer pigments to the printing medium. The depth of each color is controlled by the temperature change of the print head, and there can be up to 256 levels. Since the pigment is applied to the paper in the form of gas phase in the sublimation process, the three primary colors fuse with each other to form a continuous color gamut. The color gamut is up to 24 bits, with a total of 16 million colors, which is compared with the ink-jet printer. More real.
Yellow, red and blue are what we call the three primary colors. Any other color can be realized through these three primary colors, while the thermal sublimation printer realizes a variety of colors and color depths through the combination of three colors. However, in the process of thermal sublimation printing, three colors are not printed at the same time, but the required color requirements are combined by printing three times when one color is used each time.
It is for this reason that the printing medium needs to pass through the printer three times in the printing process, which also slows down the printing process of the thermal sublimation printer. After three colors, there is also a film pasting process. In other words, the special material on the ribbon is sublimated and attached to the paper with three layers of color to form a protective film. The film can make the color feel brighter and brighter, and has the ability of waterproof and oxidation resistance, which can be greatly prolonged. The ink jet printer can’t save the photos for a long time.
Because the color thermal sublimation printer does not have the problem of ink droplet diffusion, it can achieve good resolution. Its 300 x 300 dpi resolution is comparable to the printing accuracy of 4800 x 4800 DPI inkjet printers, while the output resolution of popular digital inkjet printers is mostly 320 DPI, so the thermal sublimation printer is very close to the effect of printing out photos.
As for the disadvantages, the dye sublimation printer uses temperature control. It can only print one primary color at a time, which means that every time you print a photo, you must input the photo paper three times. Therefore, in terms of speed, thermal sublimation printer can only be described as slow.
In the business world, black text output is the most important, but this is precisely the biggest weakness of thermal sublimation printers. It is black because it mixes solid colors of four colors (cyan, magenta, yellow and black). Very low purity. In addition, the thermal sublimation printer is very delicate, extremely sensitive to dust, and the temperature is particularly high during operation, especially during continuous printing.