About pos receipt paper— Thermal paper/ What is thermal paper?

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Receipt paper is actually a member of the thermal paper family. Thermal paper is also known as thermal fax paper, thermal recording paper, and thermal copy paper. For example, when shopping in a large supermarket, you will be given a small ticket after payment at the cash register. White receipt paper is thermal printing paper. thermal printing paper / receipt paper key sales markets: department stores, shopping malls, financial institutions, hotels, restaurants, department store clerk, hotel restaurants, medical institutions, chain convenience stores, specialty stores , Movie tickets, KTV, welfare lottery, ATM machines, aviation, etc., are widely used in our lives.

In fact, compared with ordinary paper, it is a kind of processed paper, and its manufacturing principle is to coat a layer of “heat-sensitive paint” (heat-sensitive color change layer) on high-quality base paper. It contains some special chemicals called leuco dyes. The leuco dye itself is colorless, so the newly purchased thermal paper looks as white as ordinary paper. At room temperature, thermal paper looks no different from ordinary paper, but once the temperature rises, the leuco dye and acidic substances melt into liquid one after another, and the freely movable molecules will react immediately when they meet, so the white paper The color was displayed soon. This is why the thermal paper gets its name-only when the temperature reaches a certain level will the thermal receipt paper rolls change its color.

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