CN108896020A - A kind of printing varnish registration error detection method based on image - Google Patents

A kind of printing varnish registration error detection method based on image Download PDF

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Publication number
CN108896020A
CN108896020A CN201810570420.1A CN201810570420A CN108896020A CN 108896020 A CN108896020 A CN 108896020A CN 201810570420 A CN201810570420 A CN 201810570420A CN 108896020 A CN108896020 A CN 108896020A
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CN
China
Prior art keywords
label
printing varnish
image
printing
registration error
Prior art date
Application number
CN201810570420.1A
Other languages
Chinese (zh)
Inventor
陈秀峰
Original Assignee
武汉艾可瑞特自动化有限公司
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Publication date
Application filed by 武汉艾可瑞特自动化有限公司 filed Critical 武汉艾可瑞特自动化有限公司
Priority to CN201810570420.1A priority Critical patent/CN108896020A/en
Publication of CN108896020A publication Critical patent/CN108896020A/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C11/00Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
    • G01C11/04Interpretation of pictures

Abstract

The printing varnish registration error detection method based on image that the present invention relates to a kind of, include the following steps, S1, background color label is printed on any type of print material, and the printing printing varnish label on background color label, wherein the color of the background color label is that can form the colour system of gray scale difference after imaging with the color of the color of the print material and printing varnish label respectively;S2 selects blue coaxial light source to carry out polishing, shoots the region of the background color label, and obtains the image that shooting obtains;S3 analyzes described image, obtains the relative distance of the background color label and printing varnish label, to detect the registration error between background color label and printing varnish label.For method of the invention relative to traditional method, detection accuracy is high, is a kind of method of directly detection printing varnish registration error.

Description

A kind of printing varnish registration error detection method based on image

Technical field

The present invention relates to print fields, and in particular to a kind of printing varnish registration error detection method based on image.

Background technique

Printing varnish is a kind of synthetic resin, now typically refers to surface clear varnish, is made into, is not added by base-material and auxiliary agent etc. Any pigment, it is glossy shinny after film forming, it is commonly called as being varnish.As transparency protected paint, hardness and the performances such as wear-resisting are better than colored paint, It shields;Printing varnish belongs to a kind of colorless and transparent medium, and direct imaging effect is very poor.Chromatography used by printing machine Technique of alignment needs to detect printing varnish registration error, to determine printing varnish when carrying out chromatography to printing varnish Position;And detected using photoelectric method in the prior art, traditional photoelectric method is detected on print material with photometer head It is clear to mark, the PGC demodulation with gloss oil print roller is a kind of Indirect Detecting Method, and detection error is larger.

Summary of the invention

The printing varnish registration error detection method based on image that technical problem to be solved by the invention is to provide a kind of, It may be implemented directly to detect printing varnish registration error, improve the detection accuracy of printing varnish registration error.

The technical solution that the present invention solves above-mentioned technical problem is as follows:A kind of printing varnish registration error inspection based on image Survey method, includes the following steps,

S1 prints background color label, and the printing printing varnish label on background color label on any type of print material, Wherein the color of the background color label is the face that can be marked respectively with the color of the print material and the printing varnish after imaging The colour system of color formation gray scale difference;

S2 selects blue coaxial light source to carry out polishing, shoots the region of the background color label, and obtains the figure that shooting obtains Picture;

S3 analyzes described image, the relative distance of the background color label and printing varnish label is obtained, to detect Registration error between background color label and printing varnish label out.

The beneficial effects of the invention are as follows:A kind of printing varnish registration error detection method based on image of the present invention by Printing base colour label on material is printed, printing varnish label print, can be to avoid the different reflection characteristics for printing materials not on background color label Together, the imaging effect of printing varnish label is influenced;Printing varnish itself is colourless, but its reflection is strong, passes through blue coaxial light source Polishing, background color label on image and printing varnish label and prints material and has apparent gray scale difference;Go out bottom by image analysis The relative distance of color marker and printing varnish label, it can detect that the register between background color label and printing varnish label misses Difference;For method of the invention relative to traditional method, detection accuracy is high, is a kind of directly detection printing varnish registration error Method.

Based on the above technical solution, the present invention can also be improved as follows.

Further, the color of the background color label is yellow or red.

Further, the printing varnish label is printed directly on background color label, and the shape of printing varnish label For L shape or circle;

Further, the background color label is equipped with engraved structure, the shape of the engraved structure and the printing varnish mark The shape of note is identical.

Further, the printing varnish in the printing varnish label is one of water-based gloss oil, UV gloss oil and glue.

Further, in S1, the concrete mode of printing is the combination using one or more of gravure, offset printing, silk-screen.

Further, the print material is one of art post paperboard, gold card paper, silver foil, laser paper, light beam paper and film.

Further, it is the label of background color described in blue coaxial light source vertical irradiation that blue coaxial light source, which carries out the mode of polishing, Region.

Detailed description of the invention

Fig. 1 is a kind of flow chart of the printing varnish registration error detection method based on image of the present invention;

Fig. 2 is that the first structure of image in a kind of printing varnish registration error detection method based on image of the present invention is shown It is intended to;

Fig. 3 is that second of structure of image in a kind of printing varnish registration error detection method based on image of the present invention is shown It is intended to;

Fig. 4 is that the third structure of image in a kind of printing varnish registration error detection method based on image of the present invention is shown It is intended to;

Fig. 5 is that the 4th kind of structure of image in a kind of printing varnish registration error detection method based on image of the present invention is shown It is intended to.

In attached drawing, parts list represented by the reference numerals are as follows:

1, background color marks, 2, printing varnish label, 3, engraved structure.

Specific embodiment

The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and It is non-to be used to limit the scope of the invention.

As shown in Figure 1, a kind of printing varnish registration error detection method based on image, includes the following steps,

S1 prints background color label, and the printing printing varnish label on background color label on any type of print material, Wherein the color of the background color label is the face that can be marked respectively with the color of the print material and the printing varnish after imaging The colour system of color formation gray scale difference;

S2 selects blue coaxial light source to carry out polishing, shoots the region of the background color label, and obtains the figure that shooting obtains Picture;

S3 analyzes described image, the relative distance of the background color label and printing varnish label is obtained, to detect Registration error between background color label and printing varnish label out.

Based on above-mentioned S1, S2 and S3, a kind of printing varnish registration error detection method based on image of the present invention also has Following embodiment:

Embodiment one:The color of the background color label 1 is yellow or red.

Apply example two:The printing varnish label 2 is printed directly on background color label 1, and the shape of the printing varnish label 2 Shape is L shape or circle;As shown in Fig. 2, the shape of printing varnish label 2 is L shape;As shown in figure 3, the shape of printing varnish label 2 Shape is circle.

Embodiment three:The background color label 1 is equipped with engraved structure 3, the shape of the engraved structure 3 and the printing light The shape of oil ga(u)ge note 2 is identical.Specifically, printing varnish label 2, hollow out knot are printed in the lower right corner in 1 upper left corner hollow out of background color label The shape and printing varnish label 2 of structure 3 can be L shape or circle;As shown in figure 4, the shape and hollow out knot of printing varnish label 2 The shape of structure 3 is L shape;As shown in figure 5, the shape of printing varnish label 2 and the shape of engraved structure 3 are circle.

Example IV:Printing varnish in the printing varnish label 2 is one in water-based gloss oil, UV gloss oil and glue Kind.

Embodiment five:In S1, the concrete mode of printing is the group using one or more of gravure, offset printing, silk-screen It closes.

Embodiment six:The print material can be one in art post paperboard, gold card paper, silver foil, laser paper, light beam paper and film Kind.

Embodiment seven:The mode that blue coaxial light source carries out polishing is background color mark described in blue coaxial light source vertical irradiation The region of note.

A kind of printing varnish registration error detection method based on image of the present invention by print material printing base colour mark, Printing varnish label print, can be different to avoid the reflection characteristic of different print materials on background color label, influence printing varnish label Imaging effect;Printing varnish itself is colourless, but its reflection is strong, the background color mark by blue coaxial light source polishing, on image Note has apparent gray scale difference with printing varnish label and print material;Go out background color label by image analysis to mark with printing varnish Relative distance, it can detect background color label printing varnish label between registration error;Method of the invention is opposite In traditional method, detection accuracy is high, is a kind of method of directly detection printing varnish registration error.Method of the invention can The direct detection of printing varnish on print material to realize various materials, printing varnish imaging clearly, detection error≤0.01mm can So that printing varnish chromatography precision reaches the same chromatography precision of visible color.

The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (8)

1. a kind of printing varnish registration error detection method based on image, it is characterised in that:Include the following steps,
S1 prints background color label, and the printing printing varnish label on background color label on any type of print material, wherein The color of the background color label is the color shape that can be marked respectively with the color of the print material and the printing varnish after imaging At the colour system of gray scale difference;
S2 selects blue coaxial light source to carry out polishing, shoots the region of the background color label, and obtains the image that shooting obtains;
S3 analyzes described image, the relative distance of the background color label and printing varnish label is obtained, to detect bottom Registration error between color marker and printing varnish label.
2. a kind of printing varnish registration error detection method based on image according to claim 1, it is characterised in that:Institute The color for stating background color label is yellow or red.
3. a kind of printing varnish registration error detection method based on image according to claim 1 or 2, feature exist In:The printing varnish label is printed directly on background color label, and the shape of printing varnish label is L shape or circle.
4. a kind of printing varnish registration error detection method based on image as claimed in claim 3, it is characterised in that:The bottom Color marker is equipped with engraved structure, and the shape of the engraved structure is identical as the shape that the printing varnish marks.
5. a kind of printing varnish registration error detection method based on image according to claim 1 or 2, feature exist In:Printing varnish in the printing varnish label is one of water-based gloss oil, UV gloss oil and glue.
6. a kind of printing varnish registration error detection method based on image according to claim 1 or 2, feature exist In:In S1, the concrete mode of printing is the combination using one or more of gravure, offset printing, silk-screen.
7. a kind of printing varnish registration error detection method based on image according to claim 1 or 2, feature exist In:The print material is one of art post paperboard, gold card paper, silver foil, laser paper, light beam paper and film.
8. a kind of printing varnish registration error detection method based on image according to claim 1 or 2, feature exist In:The mode that blue coaxial light source carries out polishing is the region of the label of background color described in blue coaxial light source vertical irradiation.
CN201810570420.1A 2018-06-05 2018-06-05 A kind of printing varnish registration error detection method based on image CN108896020A (en)

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CN201810570420.1A CN108896020A (en) 2018-06-05 2018-06-05 A kind of printing varnish registration error detection method based on image

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109624500A (en) * 2018-12-03 2019-04-16 汕头东风印刷股份有限公司 A kind of transparent ink chromatography detection method
CN109624539A (en) * 2019-01-31 2019-04-16 即印(上海)印刷科技有限公司 A kind of luggage digital printing process

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CN101003202A (en) * 2007-01-19 2007-07-25 长春市吉海测控技术有限责任公司 Method of using camera to carry out controlling automatic alignment for printing machine
CN101007458A (en) * 2007-02-01 2007-08-01 洛阳圣瑞机电技术有限公司 Printing registration test method
WO2011089893A1 (en) * 2010-01-20 2011-07-28 キヤノン株式会社 Displacement detection device, and error correction method for scale for displacement detection device
US8027516B2 (en) * 2005-10-17 2011-09-27 Ricoh Company, Ltd. Image forming apparatus including position detector

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US8027516B2 (en) * 2005-10-17 2011-09-27 Ricoh Company, Ltd. Image forming apparatus including position detector
CN101003202A (en) * 2007-01-19 2007-07-25 长春市吉海测控技术有限责任公司 Method of using camera to carry out controlling automatic alignment for printing machine
CN101007458A (en) * 2007-02-01 2007-08-01 洛阳圣瑞机电技术有限公司 Printing registration test method
WO2011089893A1 (en) * 2010-01-20 2011-07-28 キヤノン株式会社 Displacement detection device, and error correction method for scale for displacement detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109624500A (en) * 2018-12-03 2019-04-16 汕头东风印刷股份有限公司 A kind of transparent ink chromatography detection method
CN109624500B (en) * 2018-12-03 2020-09-18 汕头东风印刷股份有限公司 Transparent ink overprinting detection method
CN109624539A (en) * 2019-01-31 2019-04-16 即印(上海)印刷科技有限公司 A kind of luggage digital printing process

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