CN103412362A - Method for manufacturing near-infrared polarization invisible image elements - Google Patents
Method for manufacturing near-infrared polarization invisible image elements Download PDFInfo
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- CN103412362A CN103412362A CN2013103400656A CN201310340065A CN103412362A CN 103412362 A CN103412362 A CN 103412362A CN 2013103400656 A CN2013103400656 A CN 2013103400656A CN 201310340065 A CN201310340065 A CN 201310340065A CN 103412362 A CN103412362 A CN 103412362A
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Abstract
The invention discloses a method for manufacturing near-infrared polarization invisible image elements. A plastic film with a polarized light effect is selected to be made into a carrier of invisible images, the carrier of the invisible images is combined on the upper surface of a polarized light sheet, and needed invisible images are made on the carrier of the invisible images. An infrared ink layer is printed on the lower surface of the polarized light sheet, and a reflective layer is pasted on the infrared ink layer. A protective layer coats the invisible carrier, and the near-infrared polarization invisible image elements are obtained. According to the near-infrared polarization invisible image elements, the invisible images cannot be identified by the eyes of people under polarized light or natural light, the hidden images also cannot be identified under non-polarized light of the near-infrared band, and can only be detected and identified by combining the polarized light under near-infrared light and by using equipment capable of imaging in the near-infrared band, and the hidden effect of the images and texts is enhanced. The method for manufacturing the near-infrared polarization invisible image elements is simple in technology, materials are easy to obtain, cost is low, and the method is suitable for information hiding and manufacturing of anti-fake elements which are used for merchandise anti-counterfeiting.
Description
Technical field
The present invention relates to a kind of near infrared polarization latent image element method for making, belong to Information hiding and field of anti-counterfeit technology.
Background technology
The infrared hidden anti-fake print technology utilizes infrared band not in mankind visible range, and the invisible false proof technique of realizing.The information of hiding for needs, can the upper infrared printing ink of printing above it, and information can only just can be seen figure or the word covered below printing ink under infrared imaging device like this.In patent 96117859.0, disclosing a kind of hidden anti-fake print ink be printed on bar code, is that the mode that adopts the color identical with background color to hide bar code reaches stealthy; This mode has hidden stealthy on former bar code, each cover material color required is identical with former background color, in actual application, has a lot of difficulties.
Polarized light phenomenon and properties of polarized light are that people find and the marvellous spontaneous phenomenon of broad research in addition already.Current, properties of polarized light is applied on the photoelectricity screen widely.In field of anti-counterfeit technology, U.S. a company is utilizing polarized light property to make the hidden polarization test pieces many years ago, does the polaroid glasses test for polarized sunglasses production firm; In Chinese patent 200510137206.X, introduce and utilize heat sensitive process to make the polarisation latent image.In patent of invention 201110285210.6, disclose a kind of method and film of making the polarized-light stealth graphic films, it has improved heat sensitive process and has made the method for film, and a kind of plastic sheeting with polarized light dielectric property is provided.But this its concealed anti-false information exchange of two kinds of modes is crossed simple polaroid and is arrived with regard to available naked-eye observation, lack confidentiality, be not suitable for secret occasion.For concealed video text, the existing method for making of latent image based on polarization technology is mainly to rely on that the color manifested under polarized light is different from the color manifested under natural light to be realized, can distinguish the picture and text of being hidden by polarization information under white light.
Summary of the invention
The purpose of this invention is to provide a kind of near infrared polarization latent image element method for making, this element human eye under natural light can't be seen hiding picture and text, only by polarized light or the picture and text can not identification hidden of the light human eye by near-infrared band only, but only under the polarized light of near-infrared band, utilize the imaging device of the near-infrared band sensitivity picture and text hidden of identification.Application near infrared polarization latent image element method for making, manufacture craft is simple, with low cost, be easy to promote.
The present invention solves the scheme that its technical matters adopts: adopt the plastic sheeting with polarisation effect, and this plastic sheeting is made into to the carrier of hidden pattern, the carrier of hidden pattern is compound to the upper surface of the polarized light piece provided, on the hidden pattern carrier, makes the pattern of required stealth; Infrared printing ink layer in the lower surface printing of polarized light piece; At the infrared printing ink layer, paste reflection horizon, protective mulch on stealthy carrier, obtain near infrared polarization latent image element again.
Near infrared polarization latent image element method for making of the present invention is characterized in comprising the following steps:
Step 1. is determined the latent image carrier; Select the carrier of the plastic sheeting of pulling method production as latent image;
Step 2. is made the latent image layer; On the latent image carrier, press the content of institute's concealed video text to the local transient heating of carrier, heating-up temperature is the critical temperature of carrier from solid-state to liquid; Be heated during heating disordered motion of regional molecule, the molecules align of upsetting pulling method production is neat, have the characteristic of polarisation medium, loses the polarisation effect and forms general thin, is the latent image layer;
Step 5. modulation silver slurry; Making the silver slurry selects metallic aluminium powder and the modulation of common ink oil to form;
Step 7., at latent image carrier upper surface protective mulch, namely completes the making of near infrared polarization latent image.
Beneficial effect
A kind of near infrared polarization latent image element method for making that the present invention proposes, adopt the plastic sheeting with polarisation effect, and plastic sheeting is made into to the carrier of hidden pattern; The carrier of hidden pattern is compound to the upper surface of polarized light piece, on the hidden pattern carrier, makes the pattern of required stealth; Lower surface at polarized light piece prints the infrared printing ink layer and pastes reflection horizon; Protective mulch on stealthy carrier, obtain near infrared polarization latent image element.The near infrared polarization latent image element image that human eye can not identification be hidden under polarized light or natural light, near-infrared band without the image of can not identification under polarized light hiding, but only have, in conjunction with polarized light, utilize under near infrared light the imageable equipment ability of near-infrared band detection and identification, strengthened the stealthy effect of picture and text.The technology of the present invention method is simple, make material easily obtain, with low cost, be specially adapted to Information hiding and make Security element for commodity counterfeit prevention.
The accompanying drawing explanation
Below in conjunction with drawings and embodiments, a kind of near infrared polarization latent image of the present invention element method for making is described in further detail.
Fig. 1 is the protective seam schematic diagram.
Fig. 2 is that the latent image on the latent image carrier is portrayed schematic diagram.
Fig. 3 is polaroid.
Fig. 4 is infrared printing ink layer schematic diagram.
Fig. 5 is the reflection horizon schematic diagram.
Fig. 6 is near infrared polarization latent image element result schematic diagram.
Fig. 7 is the FB(flow block) that the present invention makes near infrared polarization latent image element approach.
In figure:
1. image 3. latent image carrier 4. polaroid 5. infrared printing ink layer 6. reflection horizon of protective seam 2. latent image layers
Embodiment
The present embodiment is a kind of near infrared polarization latent image element method for making.
Consult Fig. 1-Fig. 7, apply latent image element method for making of the present invention a kind of near infrared polarization latent image element is made, concrete steps are:
The first step, determine the latent image carrier; Select the carrier of the plastic sheeting of pulling method production as latent image; Any of employing PE or PVC or PET;
Second step, make the latent image layer; On the latent image carrier, press the content of institute's concealed video text to the local transient heating of carrier, heating-up temperature is the critical temperature of carrier from solid-state to liquid; Heating can utilize laser engraving machine to carry out, by the image hidden input laser engraving machine, laser with the lines of image to the local transient heating 0.2-0.4 of image-carrier second; Be heated during heating disordered motion of regional molecule, the molecules align of upsetting pulling method production is neat, have the characteristic of polarization medium, loses polarization effect and forms general thin;
The 3rd step, provide polaroid; Using the polaroid on the photoelectricity screen as polaroid, the hidden pattern carrier is compound to the upper surface of polarized light piece by gluing method;
The 4th step, make the infrared printing ink layer; The infrared printing ink layer is selected infrared covering printing ink, and selected infrared covering printing ink only allows near infrared light to see through, and the light of other wave band can not see through, and is black under daylight, and it is printed on to the lower surface of polaroid;
The 5th step, modulation silver slurry; Making the silver slurry selects metallic aluminium powder and the modulation of common ink oil to form;
The 6th step, make reflection horizon; On infrared printing ink, republish reflection horizon, inferior silver slurry is selected in reflection horizon, and mode of printing is usual manner, can be gravure or screen printing;
The 7th step, at latent image carrier upper surface protective mulch, namely complete the making of near infrared polarization latent image.
Claims (1)
1. near infrared polarization latent image element method for making is characterized in that comprising the following steps:
Step 1. is determined the latent image carrier; Select the carrier of the plastic sheeting of pulling method production as latent image;
Step 2. is made the latent image layer; On the latent image carrier, press the content of institute's concealed video text to the local transient heating of carrier, heating-up temperature is the critical temperature of carrier from solid-state to liquid; Be heated during heating disordered motion of regional molecule, the molecules align of upsetting pulling method production is neat, have the characteristic of polarisation medium, loses the polarisation effect and forms general thin, is the latent image layer;
Step 3. provides polaroid; Using the polaroid on the photoelectricity screen as polaroid, the hidden pattern carrier is compound to the upper surface of polarized light piece by gluing method;
Step 4. is made the infrared printing ink layer; The infrared printing ink layer is selected infrared covering printing ink, and selected infrared covering printing ink only allows near infrared light to see through, and the light of other wave band can not see through, and is black under daylight, and it is printed on to the lower surface of polaroid;
Step 5. modulation silver slurry; Making the silver slurry selects metallic aluminium powder and the modulation of common ink oil to form;
Step 6. is made reflection horizon; On infrared printing ink, republish reflection horizon, inferior silver slurry is selected in reflection horizon, and mode of printing is usual manner, can be gravure or screen printing;
Step 7., at latent image carrier upper surface protective mulch, namely completes the making of near infrared polarization latent image.
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| CN2013103400656A CN103412362A (en) | 2013-08-06 | 2013-08-06 | Method for manufacturing near-infrared polarization invisible image elements |
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| CN2013103400656A CN103412362A (en) | 2013-08-06 | 2013-08-06 | Method for manufacturing near-infrared polarization invisible image elements |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107798320A (en) * | 2017-11-20 | 2018-03-13 | 信利光电股份有限公司 | A kind of implicit pattern identification system and discrimination method |
| WO2019128463A1 (en) * | 2017-12-27 | 2019-07-04 | 广州广电运通金融电子股份有限公司 | Venous image acquisition device |
| CN112622467A (en) * | 2020-12-18 | 2021-04-09 | 广州市人民印刷厂股份有限公司 | Preparation method of angle-dependent color-changing polarization hidden image-text |
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| CN1996065A (en) * | 2005-12-31 | 2007-07-11 | 黄仁瑜 | Method for making polarizing invisible image by using heat sensitive process |
| CN101315678A (en) * | 2007-06-01 | 2008-12-03 | 中国印钞造币总公司 | Composite anti-counterfeit element |
| CN102431223A (en) * | 2011-09-23 | 2012-05-02 | 夏知识 | Method used for manufacturing polarized light invisible image film, and film |
| CN102501462A (en) * | 2011-10-28 | 2012-06-20 | 陈美琴 | Polarization concealed image and preparing method thereof |
| CN202306967U (en) * | 2011-09-22 | 2012-07-04 | 杨立峰 | Invisible fluorescent printing ink anti-counterfeiting label with multi-layer photonic crystals |
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2013
- 2013-08-06 CN CN2013103400656A patent/CN103412362A/en active Pending
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| US5614008A (en) * | 1995-10-23 | 1997-03-25 | Escano; Nelson Z. | Water based inks containing near infrared fluorophores |
| CN2831257Y (en) * | 2005-09-01 | 2006-10-25 | 天津环球磁卡股份有限公司 | Changeable concealed bar code data card |
| CN1996065A (en) * | 2005-12-31 | 2007-07-11 | 黄仁瑜 | Method for making polarizing invisible image by using heat sensitive process |
| CN101315678A (en) * | 2007-06-01 | 2008-12-03 | 中国印钞造币总公司 | Composite anti-counterfeit element |
| CN202306967U (en) * | 2011-09-22 | 2012-07-04 | 杨立峰 | Invisible fluorescent printing ink anti-counterfeiting label with multi-layer photonic crystals |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107798320A (en) * | 2017-11-20 | 2018-03-13 | 信利光电股份有限公司 | A kind of implicit pattern identification system and discrimination method |
| WO2019128463A1 (en) * | 2017-12-27 | 2019-07-04 | 广州广电运通金融电子股份有限公司 | Venous image acquisition device |
| CN112622467A (en) * | 2020-12-18 | 2021-04-09 | 广州市人民印刷厂股份有限公司 | Preparation method of angle-dependent color-changing polarization hidden image-text |
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Application publication date: 20131127 |