Printed full-sheet ink quantity automatic detection system based on machine vision and printed full-sheet ink quantity detection method

An automatic detection and machine vision technology, applied in the general parts of printing machinery, printing, printing machines, etc., can solve problems such as poor ink detection effect on printed sheets

Inactive Publication Date: 2014-04-02
广州市威顿彩印有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a machine vision-based automatic ink volume detection system for all printed sheets, which solves the problems of obtaining standard preset ink volumes and poor ink volume detection results in the existing printing process

Method used

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  • Printed full-sheet ink quantity automatic detection system based on machine vision and printed full-sheet ink quantity detection method
  • Printed full-sheet ink quantity automatic detection system based on machine vision and printed full-sheet ink quantity detection method
  • Printed full-sheet ink quantity automatic detection system based on machine vision and printed full-sheet ink quantity detection method

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Embodiment Construction

[0067] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0068] The structure of the machine vision-based automatic ink quantity detection system for the entire printed sheet of the present invention includes a color CCD camera, a rectangular LED light source and a detection platform. Detection platform such as figure 1 As shown, placed horizontally, the border 1 and the ink area marking area 4 are higher than the platform 2, the border 1 is white, the platform 2 is neutral gray, the length and width of the platform 2 are consistent with the length and width of the maximum printing opening of the printing machine, The background color of the ink area identification area 4 is white, and there are black straight lines perpendicular to the platform 2 on it. The distance between them is consistent with the width of the ink area of ​​the printing machine. The number of ink areas in the ink area label 5 ...

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Abstract

The invention discloses a printed full-sheet ink quantity automatic detection system based on machine vision and a printed full-sheet ink quantity detection method. The system comprises a colorized CCD (charge coupled device) camera, a rectangular LED light source and a detection platform. The method includes steps: setting up a color space conversion lookup table; positioning an ink area identification area and detecting the initial position of each ink area; positioning the position of a sample sheet on the platform and the occupied width of each ink area by the sample sheet; determining paper white; calculating standard preset quantity of green, pink, yellow and black ink in each ink area; detecting the quantity of green, pink, yellow and black ink in each ink area of the printed sheet; and calculating quantity difference of green, pink, yellow and black ink in each ink area and displaying a histogram of the ink quantity difference. The detection system and detection method are reliable and the feasible detection means and the feasible detection method for color printing high-quality low-consumption production.

Description

technical field [0001] The invention belongs to the technical field of printing quality detection, and relates to a system for detecting the amount of ink in a full printed sheet, in particular to an automatic detection system for the amount of ink in a full printed sheet based on machine vision, and also relates to a detection method for the above system. Background technique [0002] The sheet-fed offset printing machine divides the printing surface into several ink supply areas along the width direction. Each ink supply area has an ink key that can be opened and closed. The size of the ink key opening and closing corresponds to different ink supply volumes. Each ink supply area The opening of the key can be individually adjusted according to the amount of ink required in the corresponding ink area on the printed product. Therefore, to realize the control of the ink amount, it is necessary to know the ideal ink amount corresponding to each ink area of ​​each ink color, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F33/00
Inventor 胡涛李雪娇范彩霞
Owner 广州市威顿彩印有限公司
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