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酸性变色片由含卤高聚物和酸敏指示剂组成,利用含卤高聚物在电磁幅射如紫外光、X 光、电子束、高能离子等作用下,释放出卤化氢,使体系中酸敏指示剂发生颜色变化,形成图像。这种非银记录材料的特点是实时记录和显示,高灵敏度,使用简便,由于体系的非粒子性,所以它的分辨率高,此外,适当选择指示剂还可得到各种色彩的图像。然而,目前大部分感光材料在成像后,都无法对图像进行再加工(如局部消除、修改)以及重复使用,而这一点在某些特殊应用场合又是十分重要的。Stillo 曾提出这
Acidic discoloration film is composed of halogen-containing polymer and acid sensitive indicator, using halogenated polymer in the electromagnetic radiation such as ultraviolet light, X-ray, electron beam, high-energy ions under the action of the release of hydrogen halide, so that the system Acid sensitive indicator of color change, the formation of images. This non-silver recording material features real-time recording and display, high sensitivity, ease of use and high resolution due to the non-particle nature of the system. In addition, a suitable choice of indicator is also available for various color images. However, at present, most of the photosensitive materials can not be processed (such as partial elimination and modification) and reused after being imaged, which is very important in some special applications. Stillo raised this