Identification medium, identification method and identification device

A technology for identifying media and camera devices, which is applied in the field of identifying the authenticity of items, and can solve problems such as difficult identification of authenticity and insignificant anti-counterfeiting effects

Active Publication Date: 2009-09-23
NHK SPRING CO LTD
View PDF3 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, regarding this particular ink, it is relatively easy to obtain similar products, and the effect of preventing counterfeiting is not significant
In addition, with regard to holograms for visual observation, it is difficult to judge the authenticity by appearance, and it is difficult to distinguish the authenticity of products with a high level of counterfeiting.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Identification medium, identification method and identification device
  • Identification medium, identification method and identification device
  • Identification medium, identification method and identification device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0072] (1-1) Structure of Embodiment

[0073] image 3 It is a conceptual diagram which shows the cross-sectional structure of the identification medium using this invention. exist image 3 The identification medium 300 is shown in the state (unused state) before sticking to the article. The identification medium 300 has a structure including an adhesive layer 302 on the back surface side (adhesion surface side) of the hologram formation layer 303 and an aluminum vapor deposition layer 304 on the front surface side (observation surface side). The adhesive layer 302 is made of an adhesive material and is used to fix the identification medium 300 to an object to be identified. A release paper ((separator) separator) 301 is attached to the exposed surface side (surface side exposed at the time of attachment) of the adhesive layer 302 . When the identification medium 300 is affixed to the article, the release paper 301 is peeled off, the adhesive layer 302 is exposed, and the ...

manufacture example

[0078] The cholesteric liquid crystal layer 306 can be formed by printing with commercially available liquid crystal ink. As this liquid crystal ink, Wacker-Chemie Corporation (ワ ツ Ink made by Kaichi Co., Ltd. Color-changing liquid crystals can be obtained by the following production examples.

[0079] For example, a method of applying a solution containing a liquid crystal material to an alignment substrate, performing twisted nematic alignment in a liquid crystal state, and then fixing the alignment structure of the liquid crystal molecules can be employed. In addition, as such a liquid crystal material, what is necessary is just a liquid crystal material whose liquid crystal molecules have a twisted nematic alignment structure, and either a polymer liquid crystal or a low molecular liquid crystal can be used. Furthermore, as a method of fixing the alignment structure of liquid crystal molecules in this way, when a polymer liquid crystal having a glass transition temperatu...

no. 2 approach

[0100] This embodiment relates to Figure 4 A method in which reuse of the identification medium 300 becomes difficult is shown. Figure 5 It is a front view showing the identification medium of another embodiment. Figure 5 The identification medium 320 shown is for Figure 4 At least a portion of the layer of identification medium 300 is shown with radially incorporated cracks 321 near its perimeter. According to this structure, when the identification medium 320 is peeled off from the state of being attached to the article that is the object of authenticity determination, the identification medium 320 is torn from the crack 321 and reuse becomes difficult. Therefore, it becomes difficult for a malicious person to reuse the identification medium 320 (malicious use).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an identification medium, identification method and identification device, the identification medium has a liquid crystal layer (308) which changes the color of light observed depending on the rotation angle of the linear polarization filter, an aluminum vapor deposition layer (304) located on the underside thereof, cholesteric liquid crystal layers (306a, 306b), and a black color layer (305) located on the underside thereof. When the function of a circularly polarizing filter is utilized, change in appearance of the cholesteric liquid crystal layer can be observed and when the function of a linearly polarizing filter is utilized, change in color can be observed. Identification can be performed by utilizing these change in appearance.

Description

technical field [0001] The present invention relates to the technology of identifying the authenticity (authenticity) of articles by using the effect on the appearance, and relates to the technology of using a polarizing filter to form a special appearance. Background technique [0002] In articles such as daily necessities and clothing, counterfeit products that imitate the appearance of genuine products are spread across the market, causing a problem. Under such circumstances, in order to ensure performance, reliability, or safety, or to maintain brand power, a technology capable of identifying the authenticity of an article is sought. [0003] As a technique for identifying the authenticity of an article, a method of printing with a special ink on the article or a method of affixing a chip having a special optical reflection characteristic to the article is known. [0004] As a method of printing special ink, there is a method of printing predetermined characters or patt...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G09F3/02B42D15/10
CPCG03H2250/33B42D2035/42G03H1/0244B42D2033/26G03H2250/36B42D25/391G03H2250/10G03H2250/40G03H2250/34B42D25/328G03H1/02B42D2035/22G02B5/3016G03H1/0256G03H2250/41G03H2250/38B42D15/0013B42D25/29G03H1/0011B42D25/36B42D25/364G02B5/30G09F3/02
Inventor 星野秀一竹内逸雄坂内宗穗西村凉须崎吾郎
Owner NHK SPRING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap