| 摘要 |
A device for detecting a printing press for printing a securities printed matter with infrared ray ink of which spectrum characteristics in an infrared region are different from those under white light comprises, infrared ray irradiating means for irradiating infrared ray towards the securities printed matter printed and conveyed, image pick up means for taking an image on the securities printed matter, memory means for previously memorizing the image of a proper securities printed matter printed with infrared ray ink, by irradiating infrared ray, as a standard value, and judgment means for reading out the image memorized in the memory means, comparing an image taken by the image pick up means and the image of the standard value in order to improve an efficiency of quality control of a printing process and detecting process for a printed matter with infrared ray ink and a reliance of a detecting device.
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