WIFI POS Printer machine currently USES thermal printers. The following are the relevant materials of thermal printers. I hope you can understand this knowledge.

Thermal printer can only use a dedicated thermal paper, thermal paper coated with a layer of will react when it is heated and the coating color, similar to the film, but this will change color after coating is heated, the use of the properties of thermosensitive coating, thermal printing technology came into being.

WIFI POS Printer Wholesale paper is a special coated paper, its appearance and ordinary white paper similar. Thermal paper surface is smooth, is by the ordinary paper as paper base, top layer coating thermal hair color layer, coated on one side of the surface of ordinary paper, hair color layer is composed of adhesive, chromogenic agent, colorless dye (or leuco dye), not to be separated, microcapsule chemical reactions in a state of "latent". When the thermal sensitive paper meets the hot print head, the colorant and colorless dye in the print head react chemically and change color, forming the picture and text.

Thermal paper were placed above 70 ℃ environment, thermal coating began to change color. The reason why it changes color also depends on its composition.

There are two kinds of thermal sensitive components in POS Printer Brazil paper coating. The other is a colorant. This kind of thermal sensitive paper is also called two-component chemical thermal sensitive recording paper.

POS Printer Russian Commonly used as colorless dyes are: triphenyltoluene alkyl phthalide system of crystalline purple lactone (CVL), fluorane system, colorless benzoyl methylene blue (BLMB) or spiropyran system. Commonly used as colorant: para-hydroxybenzoic acid and its esters (PHBB, PHB), salicylic acid, 2, 4-dihydroxybenzoic acid or aromatic sulfone, etc.

Thermal paper after heated colorless dye color react with chromogenic agent, so the use of thermal paper receives signals on the fax machine to print or direct thermal printer to print, graphic display. Since there are many varieties of colorless dyes used, the colors of the letters displayed are different, such as blue, magenta, black, etc.