1、 Principle and definition of thermal paper printer
The working principle of a thermal printer is that a semiconductor heating element is installed on the print head, and the print head can print the required pattern after heating and contacting the thermal printing paper. Its principle is similar to that of a thermal fax machine. The image is generated by heating and chemical reaction in the film. The chemical reaction of this thermal printer is carried out at a certain temperature. High temperature will accelerate this chemical reaction. When the temperature is lower than 60 ℃, it takes a long time, even several years, for the paper to turn dark; When the temperature is 200 ℃, the reaction will be completed in a few microseconds.
2、 Principle and definition of thermal transfer printer
At present, there are two main working principles of thermal transfer printers on the market: piezoelectric printing and thermal foaming. Epson printer uses piezoelectric printing. Because the piezoelectric printer only changes the mechanical pressure, it will not change the chemical properties of the thermal transfer ink. It changes the current of the tiny piezoelectric ceramic sheet of the print head through computer control to produce different pressures and spray the ink from the nozzle to form images of different depths; Suitable for heat transfer. R210 / 230 / 270 / 290 / me series of Epson series are more suitable for personal heat transfer printers.
3、 What are the differences between thermal paper printer and thermal transfer printer
I want to buy a machine for printing thermal paper, but I found that there are two kinds of printers on the market: thermal paper printer and thermal transfer printer. I don't know how to choose between them. Next, Xiaobian will analyze these two kinds of printing machines for you vx185.
1. Different consumables
Consumables used by thermal machine: thermal paper; (the quality of thermal paper is similar to the Jia grid bar code printed by the electronic scale in the supermarket. I believe everyone has seen it); The thermal paper printer can only use special thermal paper. The thermal paper is coated with a coating that will change color due to chemical reaction in case of heat, similar to photosensitive film, but this coating will change color in case of heat. Using this characteristic of thermal coating, thermal printing technology / / 190 appears.
Consumables used for thermal transfer barcode printer: self-adhesive label paper, pet, PVC, water washing label, tag and other label media. At the same time, thermal paper can also be used for printing / / 200 / / 32;
2. The shelf life is different
Shelf life of label paper: the storage time of media printed by thermal paper machine is not long, generally half a year! (the actual shelf life depends on the storage location, luminosity, temperature and other environment)
The media printed by the heat transfer machine shall be kept for a long time, generally more than two years (depending on the quality of the label paper and carbon tape used)
3. Different application ranges
Application location: thermal machine: supermarkets, clothing stores, logistics, retail and other enterprises that do not have high requirements for bar code;
Heat transfer machines: manufacturing, automobile, textile, telecommunications, food sector, electronic industry, chemical industry, pharmaceutical industry, public utilities, retail distribution, transportation and logistics, government agencies and other enterprises;
4. Different costs
Low cost: the cost of thermal machine is low and the consumables are low; The cost of heat transfer machine and consumables is higher than that of heat sensitive machine.
In fact, when we choose thermal paper printer and thermal transfer printer, we don't have to tangle. We should choose our own products according to the needs of the industry and the quality requirements of products.
