There is a thermal paper, specifically, a double-sided printing thermal paper that can be printed on both sides and shows traces of different colors on both sides. We should not only choose high quality thermal paper, but also choose the right thermal paper supplier.
With the rapid development of thermal printing technology, the use of thermal paper has become more and more popular, such as thermal receipts and tickets in current sales terminals (POS), banks, ticketing and self-service systems, etc., but they are usually All can only meet single-sided thermal printing. When some businesses need to advertise on the other side of the printing paper or print on both sides, they also need to print advertising information on the back of the thermal paper. Undoubtedly, during the printing process, it will cause Losses and costs increase.
In view of the above shortcomings, we provide a double-sided printing thermal paper that can be printed on both sides and displays different color traces on both sides. A film protective layer, the other side of the base layer is also attached with a heat-sensitive layer, and the outer side of the heat-sensitive layer is covered with a film protective layer. Each thermal sensitive layer includes a leuco dye layer and a color developing agent layer that produces a color developing reaction with the leuco dye layer, and a thin film intermediate layer that separates the leuco dye layer and the color developing agent layer. The color developer layer, the film intermediate layer and the leuco dye layer of each thermal sensitive layer are sequentially stacked together from the outside to the inside. The leuco dye layer of the heat-sensitive layer on one side of the base layer reacts with the developer layer to show a color trace, and the leuco dye layer of the heat-sensitive layer on the other side of the base layer reacts with the developer layer to show another color reaction. A trace of color. Beneficial effects of the present utility model The double-sided printing thermal paper of the present utility model comprises a paper base layer, the two sides of the paper base layer are respectively attached with thermal layers, and the outer sides of each thermal layer are respectively covered with a film protective layer. In this case, the middle layer of the film corresponding to the heat-sensitive layer will melt, and the leuco dye layer of the heat-sensitive layer will be in contact with the developer layer, and a color development reaction will occur, thereby displaying the corresponding traces (the content that needs to be printed), so it can be done It can be printed on both sides of the thermal paper; in addition, the formula of the leuco dye layer of the thermal layer on both sides of the paper base layer (the formula determines the color displayed by the color reaction) is different, which produces the color reaction and the trace color displayed Also different, the purpose of multi-color printing can be achieved.
This kind of double-sided printing thermal paper, which can be printed on both sides and shows different color traces on both sides, includes a paper base layer, and two sides of the base layer are respectively attached with thermal layers that can produce color reaction and show traces. The outer side of the sensitive layer is covered with a transparent film protective layer, each thermal sensitive layer includes a leuco dye layer and a chromogenic agent layer, and a film intermediate layer separating the leuco dye layer and the chromogenic agent layer, each thermal sensitive layer The color-developing agent layer, the film intermediate layer and the leuco dye layer of the layer are stacked together from the outside to the inside, and the color-developing reaction between the leuco-dye layer of the thermal sensitive layer and the color-developing agent layer on one side shows a color trace, The other side produces a chromogenic reaction showing another trace of color. Under heating conditions, the film intermediate layer in the printing area melts, and the color developer layer in this area contacts the leuco dye layer and undergoes a color development reaction, showing the traces of printing, so it can achieve the effect of double-sided multi-color printing.
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