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Chromatography precision detecting method and device

A detection method and precision technology, applied in measuring devices, optical devices, instruments, etc., can solve problems such as large errors in overprint accuracy detection

Active Publication Date: 2015-11-25
NEW FOUNDER HLDG DEV LLC +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The present invention provides a method and device for overprinting accuracy detection to overcome the technical problem of relatively large overprinting accuracy detection error in the prior art

Method used

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  • Chromatography precision detecting method and device
  • Chromatography precision detecting method and device
  • Chromatography precision detecting method and device

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Embodiment Construction

[0035] figure 1 It is a flow chart of Embodiment 1 of the overprint accuracy detection method of the present invention. Such as figure 1 As shown, the method of this embodiment may include:

[0036] Step 101, collect a target detection image, the target detection image includes at least two overprint marks, and each overprint mark is printed by a nozzle of a different ink color.

[0037] Specifically, in the overprinting process, for example, C (cyan), M (magenta), Y (yellow), K (black) four-color overprinting process, when the substrate passes through the four-color nozzles in sequence, the four-color nozzles will Prints an overprint mark at the same location on the substrate, usually at the edge of the substrate. The target detection image collected in this embodiment is the image containing the four-color overprint marks. The target detection image can be collected by an industrial camera light, and the collected target detection image can be input to a computer for anal...

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Abstract

The invention provides a chromatography precision detecting method and device. The method comprises that a target detection image which comprises at least two chromatography marks is collected, and each chromatography mark is formed by jet printing by nozzles of different ink colors; the offset of each chromatography mark relative to the reference chromatography mark is determined; and the chromatography precision is determined according to the offset. The chromatography precision of the chromatography marks is determined according to the offset, and thus, the technical problem that the detection method in the prior art is large in error is solved.

Description

technical field [0001] The invention relates to digital printing technology, in particular to a method and device for detecting overprint accuracy. Background technique [0002] Overprinting refers to the overlapping registration of graphic and text printing of each color plate during multi-color printing, that is, the monochrome printing plates with different screen line angles obtained after color separation of the original, are overlapped and aligned in sequence according to the color sequence of the printing plate, and the final printing is obtained. Prints with the same level and tone as the original. [0003] The accuracy of overprinting is a key factor affecting the printing quality of printed matter. In the prior art, manual inspection is usually used to check the overprint accuracy of the printed matter, that is, the overprint accuracy is judged by naked eyes. [0004] However, there are relatively large errors in the overprint accuracy of printed matter through m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/02
Inventor 曾伟
Owner NEW FOUNDER HLDG DEV LLC
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