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For a long time, there have been fewer and fewer reports on thermal sublimation printers in the media. It is not too much to describe them as disappearing. However, the market response is quite different. The steady recovery of sales is unexpected.

It is believed that all things have reincarnation, just like the film camera, which has been dying for many years. Now the scenery is unique. Many photography enthusiasts come back after playing around, and still think that the film is the most delicious and playable.

Back in the days when there was no LCD screen in the camera, every time I went to the development shop to take photos, I was always excited and looking forward to it. Unfortunately, that feeling can no longer be found.

In the years when digital cameras were popular, people were more used to putting photos in computers, and their existing value was shrinking. Nowadays, printing photos has become a new trend. Look at how popular Fuji polaroid is. You can see how enthusiastic trendy men and women are. You know, the cost of each photo is 5 yuan, which is definitely not cheap. The reason why the thermal sublimation printer can arouse the attention of consumers again is more or less affected by this trend. It is really beautiful to print out the photos and hang them on the wall to bask in beauty, happiness and literature.

Thermal sublimation has obvious advantages and disadvantages

Thermal sublimation is a very special developing technology. It uses heat energy to transfer pigments to the printing medium. The intensity of each color is controlled by the temperature change of the print head. It can have 256 levels at most. Because the pigment is applied to the paper through the sublimation process, the three primary colors can be fused to form a continuous color scale. The composite color scale can reach 24bit, and the total number of colors can reach 16million, which is more realistic than the ink-jet printer.

Yellow, red and blue are what we call the three primary colors. Any other color can be combined by the three primary colors. The thermal sublimation printer realizes a variety of colors and color depths through the combination of the three colors. However, in the process of thermal sublimation printing, the three colors are not printed at the same time, but one color is used each time, and the required color requirements are combined through three times of printing.

For this reason, the printing medium needs to pass through the printer three times in the printing process, which also makes the printing process of the thermal sublimation printer relatively slow. After three times of coloring, there is also a film attaching process. That is, the special materials on the ribbon are sublimated on the three layers of color and attached to the paper to form a protective film. The film can make the color feel brighter and brighter, and has the ability of waterproof and anti-oxidation, which greatly prolongs the storage time of photos, which is impossible for inkjet printers.

Since the color thermal sublimation printer does not have the problem of ink droplet diffusion, it can achieve very good clarity, and its 300 × 300dpi resolution comparable to inkjet printer 4800 × The printing accuracy is 4800dpi, while the output resolution of the popular digital printer in the market is mostly 320dpi, so the thermal sublimation printer is very close to the developed one in the output effect.

As for the disadvantages, the thermal sublimation printer adopts temperature control. It can only print one primary color at a time, that is to say, the photo paper must be input three times every time a photo is printed. Therefore, in terms of speed, the thermal sublimation printer can only be described as slow.

In the business field, black text output is the most important, but this is precisely the biggest weakness of the thermal sublimation printer. Because it mixes solid pigments of four colors (cyan, magenta, yellow and black), the purity of black is very low. In addition, the thermal sublimation printer is delicate and sensitive to dust. The temperature is particularly high during operation, especially during continuous printing.

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