Photoelectric detection system for measuring the overprint deviation of printing press

A photoelectric detection method based on black-white bar code and modern photoelectric detection technology was selected for measuring the displacement deviation of printing press cylinder surface in high-speed motion state.A highprecision non-contact photoelectric detection system was designed and implemented.The accurate testing barcode was used to verify work status and measurement accuracy of the system in high-speed measurement state for assessing the quality of the system,low measurement error less than±3μm.The given experiment results indicate that:the system has stable working condition,high measurement speed,meeting the accuracy requirements of measuring the overprint deviation,and giving a new technological means to effectively solving overprint deviation.