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    热/超声打印机B/W - NSL P93W三菱(日本)

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    超声打印机(or直接热打印)是digital printing通过选择性加热涂层来产生印刷图像的过程热色纸, or热纸as it is commonly known, when the paper passes over the thermal打印头. The coating turnsblackin the areas where it is heated, producing an image. Two-colour direct thermal printers can print both black and an additional颜色(经常red) 通过应用at two different温度.rmal transfer printingis a very different method that uses a heat-sensitive ribbon instead of heat-sensitive paper, but uses similar thermal print heads.

    A thermal printer comprises these key components:

    • Thermal head: generates heat; prints on paper
    • 板条:馈送纸的橡胶辊
    • 弹簧:向热头施加压力,导致其接触热敏纸

    为了打印,温纸inserted between the thermal head and the platen. The printer sends an电流加热元素of the thermal head, which generate heat. The heat activates the thermo-sensitive coloring layer of the thermosensitive paper, which changes color where heated. Such a printing mechanism is known as athermal system或者direct system. The heating elements are usually arranged as a line of small closely spaced dots.

    纸张用染料的固态混合物和合适的基质浸渍。结合fluoranleuco dyeand an八烷基膦酸是一个例子。当矩阵在其熔点上方加热时,染料与酸反应,转移到彩色形式,然后在矩阵足够快地固化后,将变化的形式在亚稳态状态下保守(一个称为称为称为的过程热色素)。

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