惠普等一类彩色激光打印机暗记特征研究

Research on the Tracking Codes of Color Laser Printers

目的研究以惠普为代表的一类彩色激光打印机的暗记特征的点阵结构,为利用该类暗记特征进行彩色激光打印文件检验提供理论依据。方法利用一种新的分析工具对暗记特征的点阵结构进行了深入的分析,通过对大量不同品牌、型号、机台以及时间的打印样本进行比较,归纳出暗记特征的点阵结构规律。结果从构造方式、定位机制、信息解析三个方面详细论述了此类暗记特征的点阵结构,并给出了利用该暗记特征进行彩色激光打印文件检验的流程。结论研究表明,利用惠普等品牌彩色激光打印机的暗记特征可以确定打印文件对应的打印机的品牌和个体身份。

Objective The author intended to study the structure of tracking codes of a serial of color laser printers represented by HP, providing a theoretic basis for the identification of color-laser-printed documents. Method The author used a new tool to analyze the structure of tracking codes, compared a lot of color-laser-printed samples printed by machines of different brands and models, at differnt time, and then summarized the structure of tracking codes. Result The author described the structure of tracking codes from the perspective of construction method, the orientation mechanism and information decoding, and proposed an examination procedure for the examination of tracking codes. Conclusion The tracking codes can be used to confirm the brand and ID of color laser printers like HP.