JP2018169946A - Information forming sheet and method of manufacturing information forming sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information forming sheet and a method for manufacturing an information forming sheet, which can hold a lot of information having different recognition forms in a space-saving manner without impairing the design. SOLUTION: In an information forming sheet 11, a visible shape information unit 13 in which information about a shape is formed by, for example, a conductive paste containing black carbon is provided on a base material 12. On the surface of the shape information unit 13, a dot code code information unit 21 composed of a plurality of concave dots 21A formed by laser processing is provided to hold each of different recognition forms. A transparent or translucent protective layer 14 is appropriately provided on the shape information unit 13 and the code information unit 21. [Selection diagram] Fig. 1

Description

  The present invention relates to an information forming sheet holding information of different recognition forms and a method for manufacturing the information forming sheet.

  In recent years, as sheets or the like holding information with different recognition forms, sheets including information for authenticity determination in addition to visual information, IC cards equipped with IC chips for holding various data in addition to visual information, etc. Is popular. As the above information recognition mode, there are mechanical methods such as optical reading and electric reading in addition to visual observation, and the recognition technology based on mechanical reading is highly accurate. In particular, since a sheet is superior in terms of manufacturability and cost, it is desired to save a large amount of information with different recognition forms in a space-saving manner.

  Conventionally, for example, a security document described in Patent Document 1 is known as a sheet holding information with different recognition forms. In Patent Document 1, a conductive layer is formed on a document substrate, and an information portion is formed by removing a target portion of the conductive layer by laser processing or the like, and a security element arranged in parallel with the information portion. It is described that a part is formed with markings in the form of a series of recesses, and a QR code (registered trademark) or a QR dot code by a large number of perforations.

JP-T-2006-536162

  However, in the above-mentioned Patent Document 1, it is not possible to save space by forming corresponding information in the visible information part and the security element part. If the security element part is included in the visible information part, the entire information part is visible. There is a problem of impairing the natural design.

  Then, this invention was made in view of the said subject, and it aims at providing the manufacturing method of the information formation sheet and information formation sheet which hold | maintain many information from which a recognition form differs in space-saving, without impairing designability. To do.

  In order to solve the above-mentioned problem, in the invention of claim 1, there is provided an information forming sheet holding information of different recognition forms, provided on the surface of the shape information portion and the shape information portion of information relating to the shape. And a concave code information section.

  The invention according to claim 2 is a method of manufacturing an information forming sheet holding information of different recognition forms, the step of forming a shape information portion of information relating to the shape, and laser processing on the surface of the shape information portion And a step of providing concave code information.

  According to the invention of claim 1, the information forming sheet is configured to hold the shape information portion of information relating to the shape and the concave code information portion on the surface of the shape information portion, There is no color difference with the code information part, and it can save space without impairing the design by providing it in the same place, and it can hold a lot of information by the code information part in addition to the shape information part Is. Further, since there is no color difference between the shape information portion and the code information portion, it is possible to prevent copying and forgery, and it can also be applied for authenticity determination.

  According to the invention of claim 2, by forming a shape information portion of information relating to the shape, and by configuring the information forming sheet to provide concave code information by laser processing on the surface of the shape information portion, It is easy to form fine and variable code information in the shape information part, and even for the same shape information part, it is possible to manufacture secret information individually on demand by laser processing. It can be done.

It is a lineblock diagram of a 1st embodiment concerning an information formation sheet of the present invention. It is a manufacturing-process figure of the information formation sheet of FIG. It is a block diagram of 2nd Embodiment which concerns on the information formation sheet of this invention. It is a manufacturing-process figure of the information formation sheet of FIG. It is a block diagram of 3rd Embodiment which concerns on the information formation sheet of this invention. FIG. 6 is a manufacturing process diagram of the information forming sheet of FIG. 5. FIG. 6 is another manufacturing process diagram of the information forming sheet of FIG. 5.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the cross-sectional view shown in the figure, the dimensions are ignored for easy understanding.
In FIG. 1, the block diagram of 1st Embodiment which concerns on the information formation sheet of this invention is shown. In FIGS. 1A and 1B, the information forming sheet 11 is visible on a base material 12 such as paper or resin, for example, and the shape information portion 13 of the letter “A”, which is information about the shape as an example. The shape information unit 13 is configured with a laser processing member as a main component. The shape of the shape information unit 13 is targeted for characters, symbols, figures, and the like.

  The member capable of laser processing is not particularly limited as long as it has a material that does not reflect laser light as a main component, and for example, is composed of carbon (C) or copper (Cu) as a main component. In addition, the above “visible” means a state where there is no visual obstacle in the upper layer, and is a state distinguished by visual observation in relation to the hue with the surroundings, regardless of whether it is chromatic or achromatic. Alternatively, it may be transparent or translucent.

  On the other hand, when it is impossible to visually check for copy prevention and counterfeiting, the surrounding color may be the same color system, and shape information may be recognized by a reader (a reader different from a dot reading reader described later). Hereinafter, description will be given mainly as the shape information portion 13 that can be visually observed.

  If carbon is used as an example of the laser-workable member in the first embodiment, black carbon or white carbon is the main component.

  A code information portion 21 composed of a plurality of concave dots 21A formed by laser processing is provided on the surface of “A” in the shape information portion 13. The dots 21A are composed of key dots, grid dots, information dots, etc. that can be identified within a 2 mm square, for example, and are formed in the same size. A key dot is a dot code representing a reference for measuring the range and angle of one pattern when analyzing a dot code. A lattice dot is a dot code that surrounds information dots in four directions and is arranged at equal intervals, which is a reference for analysis. An information dot is a dot code that is handled as a value of an identification ID. There are 16 dots in a 2 mm square, and each piece of information represents information of 2 bits. The code information unit 21 may be a free dot code instead of a standard. In this case, the number and arrangement of dots may be associated with information. Note that the size of the dots 21A may be different depending on the size within the above range.

  And the protective layer 14 by transparent or semi-transparent resin or transparent or semi-transparent coating material is provided on the base material 12 and the shape information part 13 (code information part 21). Examples of the resin include polyethylene terephthalate (PET), polyethylene terephthalate glycol (PET-G), polycarbonate (PC), and polyvinyl chloride (PVC). Examples of the coating material include cellulose nanofibers. It is not always necessary to provide the protective layer 14, which can save space, and the dots 21 </ b> A (code information portion 21) processed in a concave shape as compared with the codes (dots) formed by the convex portions. However, it is possible to improve the wear resistance of the surface layer portion (the same applies to the second and third embodiments). Moreover, the same shape information part 13 and the protective layer 14 as the above may be provided on the back surface of the base material 12 to provide a double-sided display (the same applies to the second and third embodiments).

  That is, the information forming sheet 11 is in a form in which the shape of the shape information section 13 and the code of the code information section 21 are held in different recognition forms.

  FIG. 2 shows a manufacturing process diagram of the information forming sheet of FIG. FIG. 2 has two systems, FIGS. 2C and 2D and FIGS. 2E and 2F, which are common to FIGS. 2A and 2B. May be.

  That is, in FIG. 2 (A), for example, on the white substrate 12, for example, a conductive paste which is a laser-processable member mainly composed of black carbon is applied to the information shape of the shape information section 13. Is done. For example, it is applied with appropriate thick coating by gravure screen printing or the like.

  As shown in FIG. 2B, the shape information portion 13 is formed by heating the applied conductive paste with heating light 31 using an irradiation lamp or the like and drying the conductive paste. In this drying process, it is not necessary to use an irradiation lamp or the like by allowing the solvent contained in the conductive paste used for natural drying or quick drying. That is, this step is a step for drying the applied conductive paste regardless of any means. In addition, when forming the shape information portion 13, the conductive paste was formed along the shape of the information as described above. However, after the conductive paste was applied to the entire surface of the substrate 12 and dried, the die was removed. It is good also as forming in. In short, the shape information unit 13 may be formed by any means.

  Therefore, as one process system, as shown in FIG. 2C, the surface of the shape information portion 13 formed on the substrate 12 in FIG. The dot 21A is formed by perforation, and the desired code information 21 is obtained depending on the irradiation position. A known laser processing apparatus can be applied to the laser processing, for example, by irradiating the surface of the shape information section 13 with a laser beam 32 having a wavelength of 532 nm with a minimum output for dot formation.

  Then, after the code information portion 21 is formed on the surface of the shape information portion 13, as shown in FIG. 2D, the substrate 12 and the shape information portion 13 (code information 21) are transparent or translucent. The protective layer 14 is formed to produce the information forming sheet 11 shown in FIG.

  On the other hand, as another process system, as shown in FIG. 2 (E), the shape information portion 13 formed on the substrate 12 in FIG. 2 (B) and the surface of the substrate 12 are transparent or translucent. The protective layer 14 is formed. Then, as shown in FIG. 2 (F), from the protective layer 14 side, the focal point is matched with the depth to be drilled from the surface of the shape information section 13, and the laser beam 32 is irradiated to drill the plurality of dots 21A. The information forming sheet 11 shown in FIG. 1 is produced by forming the desired code information 21 according to the irradiation position.

  The code information unit 21 can be read by, for example, a conventionally known infrared reader. In the case of the infrared reader, it is possible to determine the presence / absence of the dot 21A by the reflectance by irradiating the code information portion 21 with infrared rays and receiving the reflection, and the information is recognized by the arrangement of the dots 21A. It is something that can be done.

  Thus, by using the information forming sheet 11 described above, the shape information portion 13 and the code information portion 21 have no color difference, and can be saved in space without impairing the design by being provided at the same location. In addition, a large amount of information can be held by the code information unit 21 in addition to the shape information unit 13. In addition, since there is no color difference between the shape information portion and the code information portion, it is possible to prevent copying and forgery, and it can also be applied for authenticity determination. The code information section 21 may be formed as a bar code as a whole in the form of a bar instead of the dots 21A.

  The information forming sheet 11 as described above can be applied to a driver's license as an example. For example, the shape information part 13 formed as described above, such as the name and address of the owner, is displayed on the driver's license, and the dot information part 21 using the dots 21A as described above is provided on the shape information part 13. Can be realized. For example, the code information part 21 provided on the address in the shape information part 13 can be used as the information of the owner of the owner.

  Next, FIG. 3 shows a configuration diagram of a second embodiment according to the information forming sheet of the present invention. The information forming sheet 11 shown in FIG. 3 is provided with a visible shape information portion 13 at a predetermined portion of the laser absorber layer 13A (members of the shape information portion 13 will be described later), and on the surface of the shape information portion 13 In addition, a code information portion 21 is formed by a plurality of concave dots 21A provided by laser processing, and a transparent or translucent protective layer 14 is provided on the laser light absorbing material layer 13A.

  The laser light absorbing material layer 13A is configured as a form in which a laser light absorbing material is included in a transparent resin other than black or transparent resin that transmits laser light or a transparent or translucent coating material. Examples of the resin include polyethylene terephthalate (PET), polyethylene terephthalate glycol (PET-G), polycarbonate (PC), and polyvinyl chloride (PVC). Examples of the coating material include cellulose nanofibers. The laser light absorbing material absorbs laser light and converts it into heat and changes to a predetermined color. For example, phthalocyanine dyes, cyanine dyes, metal complex dyes, diimonium System dyes are used. A dye other than black may be used.

  The shape information portion 13 is formed by irradiating the laser light absorbing material layer 13A with laser light and coloring the irradiation position in black, and is visible. It becomes the member of. In the present embodiment, since the shape information portion 13 and the code information portion 21 can be formed by laser processing with the protective layer 14 interposed, the shape information portion 13 and the code information portion 21 are stocked in a state in which the format is formed in advance, and the shape is formed by laser processing as necessary. The information part 13 and the code information part 21 can be formed, and the productivity and the handleability can be improved.

  Note that a base material of a color other than black may be provided on the lower surface of the laser light absorbing material layer 13A according to the colored color, or a colored base material that does not transmit light is provided. A laser light absorbing material layer 13A and a protective layer 14 similar to the above may be provided on the back surface.

  FIG. 4 shows a manufacturing process diagram of the information forming sheet of FIG. First, in FIG. 4A, perforation of the laser light absorbing material layer 13A from the protective layer 14 side with respect to a predetermined portion of the laser light absorbing material layer 13A in which the protective layer 14 is provided on the laser light absorbing material layer 13A. When the laser beam 32 is irradiated with the focal point at a position corresponding to the depth to be irradiated, the laser beam absorbing material included in the laser beam absorbing material layer 13A absorbs the laser beam 32 and develops a black color and generates heat.

  Along with the heat generation, as shown in FIG. 4B, the blackened portion of the laser light absorbing material in the resin component contained in the laser light absorbing material layer 13A is carbonized to become black, and the shape information portion as a whole. Expressed as 13.

  Subsequently, as shown in FIG. 4C, a plurality of the dots 21A are perforated by irradiating the laser light 32 on the surface of the laser light absorbing material layer 13A from the protective layer 14 side, and depending on the irradiation position. By forming the desired code information 21, the information forming sheet 11 shown in FIG. 3 is produced.

  In the above manufacturing process, the case where the shape information portion 13 and the code information portion 21 are formed in a state where the protective layer 14 is provided on the laser light absorbing material layer 13A is shown. The protective layer 14 may be formed after the shape information portion 13 and the code information portion 21 are formed by irradiating laser light.

  Next, FIG. 5 shows a configuration diagram of a third embodiment according to the information forming sheet of the present invention. In addition, the shape information part 13 of the claim in this application says the part which the information base layer 15 has exposed when it sees from the visual recognition side in 3rd Embodiment. In the information forming sheet 11 shown in FIG. 5, an information base layer 15 made of a laser-processable member is provided on a base material 12, and the information base layer 15 has a color different from that of the information base layer 15. The information forming surface layer 16 in which the opening portion along the information shape is formed is positioned, and the information base layer 15 along the shape of the opening portion is made visible and provided as the shape information portion 13. On the surface of the shape information portion 13, a code information portion 21 is provided by a plurality of concave dots 21A provided by laser processing. In addition, the base material 12 is not necessarily required and may be configured by the information base layer 15 and the information forming surface layer 16 (the same applies to the manufacturing steps shown in FIGS. 6 and 7).

  A transparent or semi-transparent protective layer 14 is provided on the shape information part 13 (code information part 21) and the information forming surface layer 16.

  Whether or not the shape information portion 13 shown in FIG. 5 is visible is determined by the relationship between the color of the base material 12, the color of the information base layer 15, and the color of the information forming surface layer 16. That is, the color of the information base layer 15 is different from the color of the information forming surface layer 16 (the color of the base material 12 is not limited), and the color of the base material 12 and the color of the information forming surface layer 16 are different colors. The information base layer 15 can be made visible by making it transparent or translucent. On the other hand, by making the color of the information base layer 15 and the color of the information forming surface layer 16 the same color system color (regardless of the color of the base material 12), it is made invisible for, for example, anti-counterfeiting or authenticity determination. Can do.

  FIG. 6 shows a manufacturing process diagram of the information forming sheet of FIG. 5, and FIG. 7 shows another manufacturing process diagram of the information forming sheet of FIG. First, in FIG. 6A, the focus is on the depth at which the information forming surface layer 16 is perforated and removed with respect to the sheet in which the information base layer 15, the information forming surface layer 16, and the protective layer 14 are sequentially provided on the substrate 12. Are irradiated with laser light 32, and as shown in FIG. 6B, an information base is formed by removing an irradiation position portion of the information forming surface layer 16 to form an opening along the shape of the information. The layer 15 is exposed to form the shape information portion 13 as a whole.

  Subsequently, as shown in FIG. 6C, a plurality of the dots 21A are formed by irradiating the laser beam 32 on the shape information portion 13 that is exposed as a dot with a focal point matched to the depth of drilling. Is formed by perforation, and the desired code information 21 is obtained depending on the irradiation position. And although not shown in figure, the information formation sheet 11 shown by FIG. 5 is produced by forming the transparent or semi-transparent protective layer 14 on the information formation surface layer 16 and the shape information part 13 (code information 21).

  As another manufacturing process, FIG. 7 shows a case where the shape information section 13 and the code information section 21 are formed by applying a known laser oscillation technique in which two laser beams having different wavelengths are output coaxially. Yes.

  That is, as shown in FIG. 7A, the first wavelength laser beam 32A is applied to the information forming surface layer 16 on the sheet on which the information base layer 15 and the information forming surface layer 16 are sequentially provided on the substrate 12. Is focused on the depth at which the information forming surface layer 16 is perforated and removed, and at the depth at which the second wavelength laser light 32B is perforated as dots of the information base layer 15. The wavelengths of the first wavelength laser beam 32A and the second wavelength laser beam 32B are set according to the member to be processed at the respective irradiation positions. For example, the first wavelength laser beam 32A and the second wavelength laser beam 32B The wavelength of the one-wavelength laser beam 32A is 1064 nm, and the second-wavelength laser beam 32B is 532 nm with respect to the information base layer 15 configured as described above.

  Then, by outputting the first wavelength laser light 32A and the second wavelength laser light 32B on the same axis, the portion of the irradiation position of the information forming surface layer 16 is removed by the first wavelength laser light 32A, and the shape of the information The information base layer 15 is exposed by forming an opening along the line, and a plurality of the dots 21A are formed by perforation on the information base layer 15 exposed by the second wavelength laser beam 32B to generate code information. 21.

  By the way, when forming the shape information unit 13, the shape information unit 13 may be formed by coating or the like in the shape along the shape of the shape information unit 13 as in the first embodiment. It may be formed by cutting into a shape.

  Furthermore, as in the third embodiment, the shape information portion 13 may be formed by forming an opening along the shape of the shape information portion 13 in the information forming surface layer 16 and exposing the information base layer 15. The information forming surface layer 16 is processed with a laser to form an opening along the shape of the information in the shape information section 13, but the opening may be formed by a processing means other than a laser. The information forming surface layer 16 in which an opening along the shape of information in the shape information section 13 is previously formed by die cutting or the like may be bonded, and the method for forming the opening is not limited.

  The information forming sheet according to the present invention can be used in industries such as manufacture, use, and sales of anti-counterfeit sheets, authenticity determination sheets, various types of certificates and certificates, and various cards such as cards and credits.

DESCRIPTION OF SYMBOLS 11 Information formation sheet 12 Base material 13 Shape information part 13A Laser light absorber layer 14 Protective layer 15 Information base layer 16 Information formation surface layer 21 Code information part 21A Dot 31 Heating light 32 Laser light 32A 1st wavelength laser light 32B 2nd wavelength Laser light

Claims (2)

It is an information forming sheet holding information of different recognition forms,
A shape information section for information about the shape;
A concave code information section provided on the surface of the shape information section;
An information forming sheet comprising: A method of manufacturing an information forming sheet that holds information of different recognition forms,
Forming a shape information portion of information about the shape;
Providing concave code information by laser processing on the surface of the shape information section;
A method for producing an information forming sheet, comprising:

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