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Device and method for checking electrotype intaglios

A technology for inspection devices and inspection methods, applied in measuring devices, material analysis through optical means, instruments, etc., can solve problems that have not been applied, and achieve the effect of solving the problem of mirror reflection on the layout

Active Publication Date: 2010-11-24
CHINA BANKNOTE PRINTING & MINTING
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Problems solved by technology

However, the inspection of electroformed gravure patterns has not been applied yet

Method used

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  • Device and method for checking electrotype intaglios
  • Device and method for checking electrotype intaglios
  • Device and method for checking electrotype intaglios

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Embodiment Construction

[0021] The specific implementation manner of the present invention will be further described in detail below in conjunction with the drawings and specific examples.

[0022] The invention relates to an electroforming gravure pattern inspection device. The pattern of the electroformed gravure is pit-shaped stripes recessed below the layout, and the two walls of the pit-shaped stripes are diffuse reflection surfaces. The device mainly includes: The camera above the plate; and the light source module, the light emitted by the light source module has an included angle with the plate, so that the light shining on the plate plane does not enter the camera lens after reflection, and the image is dark; Because it is a pit-shaped stripe that is recessed below the layout, and the two walls of the pit-shaped stripe are diffuse reflection surfaces, so the light that shines on the pattern can be reflected into the camera, and images of different grayscales are formed for different depths of...

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Abstract

The invention discloses a device and a method for checking electrotype intaglios. The intaglios of an electrotype are pit-shaped stripes formed by recessing the electrotype, and two walls of each pit-shaped stripe form diffusely reflecting surfaces. The device is characterized by comprising a camera arranged above the electrotype and a light source module, wherein light rays emitted by the light source module form an included angle with the electrotype, so that the light rays falling on the surface of the electrotype can not enter a lens of the camera after reflection, and images are dark; and light rays falling on the intaglios can be reflected into the camera, and the intaglios of different depths form images of different gray scales. By using the checking device and the method, the amplified intaglio images having a certain three-dimension effect can be shown on a computer display, thereby solving the problem on the mirror reflection of the electrotype and obtaining the electrotypeintaglio images having a distinct three-dimension effect to meet requirements for checking the electrotype.

Description

technical field [0001] The invention relates to a technology for inspecting electroformed gravure pattern of printed banknotes, in particular to an electroformed gravure pattern inspection device and method realized by applying special optical technology. Background technique [0002] At present, the method of using industrial CCD cameras to scan and process images of various media has become very popular. However, the inspection of electroformed gravure pattern has not been applied yet. The key reason is that the electroformed gravure has deep patterns and fine lines. Its surface is chrome-plated, and the non-graphic part forms a smooth mirror surface. Moreover, the electroforming gravure inspection has its particularity. It needs to clearly display the features in the pattern. Therefore, how to clearly collect the pattern image so as to accurately reflect the quality of the pattern is the main problem that the device needs to solve. Contents of the invention [0003] ...

Claims

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Application Information

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IPC IPC(8): G01N21/956G01N21/49
Inventor 李云龙肖建利栾金属张向宵张亚君
Owner CHINA BANKNOTE PRINTING & MINTING
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