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http://dx.doi.org/10.5392/JKCA.2012.12.12.639

Characteristic of Yellow Dots that detected on Color Laser Printer  

Choi, Young-Ho (대검찰청 과학수사담당관실 문서감정실)
Lee, Doek-Ho (대검찰청 과학수사담당관실 문서감정실)
Yoon, Young-Mi (대검찰청 과학수사담당관실 문서감정실)
Hong, Heon-Sich (대검찰청 과학수사담당관실 문서감정실)
Shin, Jong-Yeon (대검찰청 과학수사담당관실 문서감정실)
Yoon, Kee-Hyung (대검찰청 과학수사담당관실 문서감정실)
Publication Information
Abstract
To analyzed the shape of Yellow Dots which appeared on the paper printed HP color laser printer, and analyzed the characteristic of Yellow Dots according to time, month, year and same printers. As a result, documents that printed in same printers had an identical Yellow Dots's shapes according to time, month, year. It was presupposed that was not embedded time and date information in HP Color LaserJet printers against Xerox, and printers which have different serial number had similar shapes but it was not identical Yellow Dots. Finally, it was found to be identical patterns in Yellow Dots of HP Color LaserJet printers used analysis. Depending on the results, it could understand HP's pattern. In the future, it will decipher patterns of Yellow Dots which have other informations to include other printer manufacturer.
Keywords
Color Laser Printer; Laser Printer; Yellow Dots; Yellow Dots Pattern; Printer Embedding;
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