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Device and method used for detecting flake material infrared image printing quality

A sheet material and image detection technology, applied to the general parts of printing machinery, printing, printing machines, etc., can solve the problems of unfavorable large banknote printing quality detection, no image processing device disclosed, and high-speed production cannot be satisfied. , to achieve the effect of improving uniformity and clarity, simple structure and high accuracy

Inactive Publication Date: 2009-06-10
CHINA BANKNOTE PRINTING & MINTING
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Problems solved by technology

The disadvantage of this device is that it can only detect static sheet materials, and the detection speed is very slow, which cannot meet the requirements of high-speed production
Since the light source used in this device is a full-spectrum light source, different light filters are used to transmit light of different spectra, so that the CCD camera can take images of different spectra, which leads to the occurrence of insufficient light intensity. In this case In this case, the image captured by the CCD camera will not be bright enough, which is not conducive to the detection of the printing quality of large banknotes
In addition, the utility model patent only discloses a device for capturing images, but does not disclose how to process the captured images

Method used

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  • Device and method used for detecting flake material infrared image printing quality
  • Device and method used for detecting flake material infrared image printing quality
  • Device and method used for detecting flake material infrared image printing quality

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Embodiment Construction

[0042] The invention will now be described with reference to the accompanying drawings, figure 1 It is a schematic diagram of the structure of the detection device disclosed in the present invention. The detection device 100 includes a transmission device 101 , an irradiation device 103 , a receiving device 105 , and an information processing device 200 . The transmission device 101 is provided with an encoder 107 for making the transmission device 101 , the irradiation device 103 and the receiving device 105 work synchronously. The sheet material is placed on the transport device 101 . The receiving device 105 is provided with an infrared filter 109 for transmitting infrared light. The illuminating device 103 irradiates light onto the sheet material located on the conveying device 101, the receiving device 105 receives the infrared light reflected or diffused from the sheet material, and converts it into a detection image, and the information processing device 200 receives ...

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Abstract

The present invention provides an equipment for detecting printed quality of infrared image of sheet material. Said equipment includes transmission device, lighting device, receiving device and information processing device. Said invention also provides the action of every device, and its method for detecting printed quality by using said equipment.

Description

technical field [0001] The present invention relates to a device and a method for testing, in particular to a device and a method for testing the printing quality of an infrared image of a sheet material. Background technique [0002] At present, in order to increase the anti-counterfeiting capabilities of sheet materials such as banknotes, securities, stamps, security papers, etc., most of these sheet materials are provided with infrared images. The quality of infrared image printing directly affects the anti-counterfeiting ability of the sheet material. Therefore, the inspection of infrared image printing quality has become a very important issue. [0003] The Chinese invention patent ZL 96194751.9 filed on May 9, 1996 by German Gisek & Defreant Co., Ltd. discloses a device for detecting sheet materials. The device has a lighting device for detecting The sheet material is illuminated continuously over the entire spectral range of the light source, and there is a receiving...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/89G01N21/35B41F33/00G07D7/1205
Inventor 周仁忠杨艺
Owner CHINA BANKNOTE PRINTING & MINTING
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