WO2015049913A1 - Bulk body, housing component or movement for wristwatch, accoutrement, tag, or fastener, and method for producing these - Google Patents

Bulk body, housing component or movement for wristwatch, accoutrement, tag, or fastener, and method for producing these Download PDF

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Publication number
WO2015049913A1
WO2015049913A1 PCT/JP2014/069997 JP2014069997W WO2015049913A1 WO 2015049913 A1 WO2015049913 A1 WO 2015049913A1 JP 2014069997 W JP2014069997 W JP 2014069997W WO 2015049913 A1 WO2015049913 A1 WO 2015049913A1
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WO
WIPO (PCT)
Prior art keywords
lattice
character
mold
bulk body
body according
Prior art date
Application number
PCT/JP2014/069997
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French (fr)
Japanese (ja)
Inventor
裕幸 原田
清水　幸春
望 富樫
豪 高野
Original Assignee
並木精密宝石株式会社
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Application filed by 並木精密宝石株式会社 filed Critical 並木精密宝石株式会社
Priority to JP2015540413A priority Critical patent/JPWO2015049913A1/en
Publication of WO2015049913A1 publication Critical patent/WO2015049913A1/en

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1809—Diffraction gratings with pitch less than or comparable to the wavelength
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1847—Manufacturing methods
    • G02B5/1852—Manufacturing methods using mechanical means, e.g. ruling with diamond tool, moulding
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1861—Reflection gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials

Definitions

  • the present invention relates to a bulk body in which characters or figures are formed and a method for manufacturing the bulk body.
  • Damage caused by counterfeits is spreading on various products such as apparel and bags of famous brands, watches, household electronics equipment, industrial equipment, automobiles, and hobby goods such as accessories.
  • the damage caused by counterfeit goods to a company is large. For example, if low-cost counterfeit goods are available, not only the loss of sales opportunities for genuine products but also the failure of the business model may occur. In addition, if bad reputation spreads by bad imitation products, it may lose the trust of the brand image that has been nurtured over the years.
  • Hologram is a technique for recording an image that appears three-dimensionally on a plane by using interference of light.
  • the anti-counterfeit label using this hologram is affixed to the authentic product itself, or to the authentic certificate or package of the product, thereby proving that the product is an authentic product.
  • the present invention has been made in view of the above circumstances, and by taking anti-counterfeiting measures directly on the characters of the brand logo formed on the product itself, and the figure called the trademark indicating the brand and manufacturer, It is an object to provide a new anti-counterfeiting measure having a further anti-counterfeit effect and a manufacturing method thereof.
  • an object of the present invention is to provide a new anti-counterfeiting measure and a method for manufacturing the same, which further enhances anti-counterfeiting.
  • the bulk body of the present invention is formed with characters or figures, and at least a part of the letters or figures is formed with one or more of lattices, slits, protrusions, holes, or latent images. It is characterized by being.
  • a lattice is formed in at least a part of a lattice, a slit, a protrusion, a hole, or a latent image, and the lattice further includes a metallic glass including a vitreous metal single phase, Metal glass containing a vitreous metal single phase having a supercooled liquid temperature range of 30K or higher at a heating rate of 0.67 K / s, metal glass containing crystals having a particle size of 100 nm or less, or vitreous metal structure by volume ratio It is preferably made of any of metallic glass containing 50% or more, and the interval between the grooves of the lattice is preferably set within a range of less than 10 ⁇ m.
  • the interval between the grooves of the lattice is set in a range of 527 nm to 1217 nm.
  • the grating grooves have two or more different spacings, and the spacing is at least two or more different spacings of either 1020 nm, 784 nm, or 659 nm. Preferably there is.
  • the grooves of the lattice further have two or more different groove angles.
  • the metallic glass is mainly composed of Pt.
  • At least a part of the lattice is formed in at least a part in the thickness direction of a character or a figure.
  • an exterior part or a movement, accessory, tag or fastener for a wristwatch according to the present invention is characterized by comprising the bulk body described above.
  • a character or a figure is formed on the bulk body, the character or figure is heated after the formation of the character or figure, and a predetermined lattice, slit, protrusion, hole, or latent image is formed. Any one or two or more of a lattice, a slit, a protrusion, a hole, or a latent image is pressed on a character or a figure by pressing a mold on which any one or two or more shapes are formed.
  • At least a part of characters or figures is a metallic glass containing a glassy metal single phase, a supercooled liquid temperature range of 30 K or more at a heating rate of 0.67 K / s. It is formed of any one of a metal glass containing a glassy metal single phase, a metal glass containing a crystal having a particle size of 100 nm or less, or a metal glass containing a vitreous metal structure at a volume ratio of 50% or more.
  • a mold in which a predetermined lattice, slit, protrusion, hole, or latent image of the shape of the lattice is formed, and set the interval between the grooves of the lattice within a range of less than 10 ⁇ m, Heat the metal glass, press the mold with the predetermined grid shape on the heated metal glass, transfer the grid to the metal glass, cool the metal glass after the transfer and release the mold press And mold release from metal glass Further cooling or metallic glass, Alternatively, at least a mold having a lattice shape and a character or figure shape is prepared, a metal glass is melted as a bulk material, and the molten metal glass is poured into the mold, and the character or figure is cast by casting. It is preferable to form a lattice at least partially within a range of a groove interval of less than 10 ⁇ m.
  • the interval between the grooves of the lattice within a range of 527 nm to 1217 nm.
  • At least two or more different intervals of 1020 nm, 784 nm, or 659 nm are formed as the grooves of the lattice.
  • the metal glass is preferably a metal glass containing Pt as a main component.
  • a mold having a lattice shape is prepared, and pressing by the mold is performed on at least a part in the thickness direction of a character or a figure,
  • a mold having at least a lattice shape formed in at least part of the thickness direction of the character or figure shape is prepared, the bulk body material is melted, and the molten bulk body material is poured into the mold, It is preferable to form a lattice on at least part of the thickness direction of the characters or figures by casting.
  • an exterior part or movement, accessory, tag, or fastener for a wristwatch is described in any one of the above, on at least a part of the exterior part or movement, accessory, tag, or fastener for a watch.
  • a bulk body is provided.
  • the anti-counterfeiting structure is directly applied to the genuine product itself by forming the anti-counterfeiting structure directly on the characters and figures formed on the bulk body provided in the product itself. Is done. Therefore, since a product that distinguishes authenticity, such as an anti-counterfeit label, is not attached to the product separately, it is possible to judge the authenticity of the product itself. It becomes possible to give the product a high anti-counterfeit effect.
  • the interval between the grooves of the lattice within a range of less than 10 ⁇ m, it is possible to make it difficult to find a structure for preventing forgery by simply looking at the characters or figures.
  • the genuine article with a bulk body in which characters and figures are formed, it is not necessary to separately attach an object for identifying authenticity such as a conventional anti-counterfeit label. Therefore, it is possible to make it difficult to determine where the genuine product is taking anti-counterfeit measures or what is the anti-counterfeit measure itself, and the manufacturer of counterfeit products can easily take the anti-counterfeit measure itself. It can be made not to imitate. Therefore, it becomes possible to further increase the prevention of forgery of genuine products.
  • the lattice includes a metallic glass containing a glassy metallic single phase, a metallic glass containing a vitreous metallic single phase having a supercooled liquid temperature range of 30 K or more at a heating rate of 0.67 K / s, and a crystal having a particle size of 100 nm or less.
  • a metallic glass containing a glassy metallic single phase a metallic glass containing a vitreous metallic single phase having a supercooled liquid temperature range of 30 K or more at a heating rate of 0.67 K / s
  • a crystal having a particle size of 100 nm or less Compared with the one that imitates the structure with another material by forming it from either metallic glass containing glass or metallic glass containing 50% or more by volume of the vitreous metal structure. Therefore, it is possible to realize a structure having a highly accurate shape with excellent manufacturing and transferability of each single structure. Therefore, it is possible to immediately distinguish a difference from a counterfeit product.
  • the first-order diffracted light having at least one or more wavelengths in the visible light region is diffracted. ,reflect.
  • a light-receiving element such as a photodiode, a CCD camera, or the like
  • any one or two or more of a predetermined lattice, slit, protrusion, hole, or latent image is formed into a character or a figure by one molding. Therefore, it is possible to realize a method for manufacturing a bulk body according to the present invention, which is low in cost and excellent in mass productivity.
  • (A) It is a top view which shows typically an example of the character or figure which concerns on this embodiment formed in the bulk body.
  • (B) It is an enlarged view in circle A of Drawing 1 (a).
  • (A) It is a perspective view of the character shown in FIG. (B) It is an expanded sectional side view when the character shown in FIG. 2 (a) is seen from the BB cutting line direction.
  • (A) It is an expanded sectional side view which shows the example of a change of the groove shape of a grating
  • (B) It is an expanded sectional side view which shows another example of a change of the groove shape of a grating
  • FIG. 5 It is an enlarged view in circle D of Drawing 5 (a).
  • A It is a perspective view which shows typically an example of the character or figure formed in the bulk body which concerns on this embodiment by which the grating
  • B It is the perspective view which showed only the lattice part shown to Fig.6 (a) by the continuous line.
  • It is explanatory drawing which shows typically the structure of the transfer apparatus which concerns on this embodiment. It is explanatory drawing which shows typically the transfer process in the transfer apparatus which concerns on this embodiment. It is explanatory drawing which shows typically the mold release process in the transfer apparatus which concerns on this embodiment.
  • FIG. 1 shows an alphabet I as an example of anti-counterfeiting measures, in which a lattice is formed in a plane direction on a plane portion that is a part of a character or figure formed in a bulk body. Yes. Note that the XYZ orthogonal coordinate systems shown in FIGS. 1 to 6 correspond to each other in each figure. Further, in FIGS. 1 to 6, the bulk body of the base of characters or figures is not shown.
  • the size of the character or figure 1 is set such that, for example, the size H in the height direction is set to 1 mm or more and can be discriminated visually.
  • the upper limit of the size H can be set arbitrarily and may be set to about 5 mm.
  • the thickness T in the Z-axis direction of the character or figure can be arbitrarily set, and may be set to be less than about 5 mm.
  • Characters and graphics include all characters such as hiragana, katakana, kanji, numbers, kanji, symbols, symbols, and brand logos in addition to the alphabet shown in FIG.
  • the figure includes a basic figure such as a circle, a triangle, or a rectangle, a more complicated geometric pattern, or a trademark indicating a brand or a manufacturer.
  • the lattice mentioned as an example of the anti-counterfeiting structure has a shape only in one axis direction (Y-axis direction in FIGS. 1 and 2) in the X-axis-Y-axis plane. It shall refer to the structure which consists of unevenness
  • the cross-sectional shape of the projections and depressions can be appropriately formed, and not only the waveform as shown in FIG. 2 (b) but also the V-shaped triangular wave shape shown in FIG. 3 (a) or the rectangular shape shown in FIG. 3 (b). It may be molded.
  • the latent image is an image that can be discriminated by arranging characters or figures obliquely with respect to the line of sight, and is processed by latent image processing.
  • latent image processing is defined as image processing that can be discriminated when a character or a figure is arranged obliquely with respect to the line of sight.
  • Such characters and figures are formed by pressing or engraving on the bulk parts of the watch itself, such as exterior parts for watches or movements, accessories, tags, or fasteners.
  • the anti-counterfeiting measure is directly applied to the genuine product itself. Therefore, since a product that distinguishes authenticity, such as the anti-counterfeit label, is not attached to the product separately, it is possible to determine the authenticity of the product itself. It is possible to give the product a high anti-counterfeiting effect.
  • each single structure of the structure for preventing forgery is preferably less than 10 ⁇ m.
  • the limit that the human eye can recognize as a structure is defined as less than 10 ⁇ m. Therefore, when the size of the single structure is 10 ⁇ m or more, the human eye can recognize the structure as a structure in the present invention.
  • each single structure of each structure for preventing forgery is a pair of irregularities.
  • the depth of each unevenness and the distance d between the tops or grooves are set within a range of less than 10 ⁇ m.
  • the top and bottom of each of the corrugated irregularities are indicated by solid lines.
  • channel is expanded and shown in order to ensure visibility.
  • each cut is set as a single structure, and the size of each cut and the interval between the cuts are set within a range of less than 10 ⁇ m.
  • each protrusion has a single structure, and the size of each protrusion and the interval between the protrusions are set within a range of less than 10 ⁇ m.
  • each hole has a single structure, and the diameter of each hole and the interval between the holes are set within a range of less than 10 ⁇ m.
  • each latent image has a single structure, and the size of each latent image and the interval between the latent images are set within a range of less than 10 ⁇ m.
  • the size of a single structure is less than 10 ⁇ m, it is possible to make it difficult to find a structure for preventing counterfeiting at first glance.
  • the genuine product with the bulk body in which characters and figures are formed according to the present invention, it is not necessary to separately attach an object for identifying authenticity such as a conventional anti-counterfeit label. Therefore, it is possible to make it difficult to determine where the genuine product is taking anti-counterfeit measures or what is the anti-counterfeit measure itself, and the manufacturer of counterfeit products can easily take the anti-counterfeit measure itself. It can be made not to imitate. Therefore, it becomes possible to further increase the prevention of forgery of genuine products.
  • the lattice is a structure whose shape periodically changes at equal intervals only in one axial direction, and extends in the other axial direction (X-axis direction in FIGS. 1 and 2). There is no structural change. Therefore, unlike other structures, there is no need to periodically change the structure in the biaxial direction (X-axis and Y-axis directions), and it is also necessary to perform punching processing such as slits and holes. Since there is no lattice, the structure can be more concise than other structures. Therefore, the lattice is the easiest to manufacture and is the most preferred structure for forming a single structure of less than 10 ⁇ m.
  • each unevenness since the depth and interval d of each unevenness are set within a range of less than 10 ⁇ m, the counterfeiting of the grating itself can be made difficult, and the counterfeiting of the genuine product can be prevented in terms of the difficulty of counterfeiting. It becomes possible to raise.
  • the depth h of each groove may be set to about several hundred nm to several ⁇ m.
  • the anti-counterfeiting structure formed on the character or figure 1, the bulk body on which the character or figure is formed, and the character or figure are formed from metal glass.
  • at least the structure for preventing forgery may be formed of metal glass.
  • the metallic glass according to the present invention includes a metallic glass including a vitreous metallic single phase, a metallic glass including a vitreous metallic single phase having a supercooled liquid temperature range of 30 K or more at a heating rate of 0.67 K / s, and a grain of 100 nm or less. It is selected from any one of metallic glasses containing crystals having a diameter or metallic glasses containing a glassy metallic structure containing 50% or more by volume.
  • a metallic glass including a glassy metal single phase or a crystal having a particle size of 100 nm or less has a texture structure exhibiting surface smoothness. Accordingly, since there is no particle defect, a structure with a smooth surface can be produced. Furthermore, manufacturing variations can be more reliably removed. Therefore, compared to a structure that is imitated and manufactured using a different material, it is possible to realize a highly accurate structure with less manufacturing variation and superior transferability of the grating surface and transferability of each single structure of the grating. Therefore, it becomes possible to immediately distinguish the difference from the counterfeit product.
  • the grain size of the crystals mixed in the matrix of the metallic glass structure is 100 nm or less.
  • a metal glass including a vitreous metal single phase having a supercooling temperature region of 30 K or more at a heating rate of 0.67 K / s has high stability as a solid glass. Therefore, by using low-cost and highly reproducible molding processes such as injection molding by extrusion, extrusion molding, pressure rolling molding, transfer, etc., each single structure of the structure can be made very easily and with high accuracy. It can be produced. Furthermore, manufacturing variations can be more reliably removed. Therefore, even if the structure is manufactured by imitation using a different material, it is possible to immediately distinguish the difference from the counterfeit product by comparing the accuracy and manufacturing variation of each single structure.
  • each single structure of the structure can be manufactured with high precision, and high durability can be imparted to the structure directly formed on the intrinsic product. Therefore, even if the structure is manufactured by imitation using a different material, it is possible to distinguish the difference from the counterfeit product by comparing the accuracy, manufacturing variation, and durability of each single structure.
  • the volume fraction of the vitreous metal structure in the metal glass is preferably 50% or more.
  • the wavelength of the first-order diffracted light diffracted from the grating can be set to 360 nm or more and 830 nm or less.
  • the wavelength of light between 360 nm and 830 nm is defined as the wavelength of the human visible light region.
  • the first-order diffracted light having at least one or more wavelengths in the visible light region is diffracted and reflected.
  • a light-receiving element such as a photodiode, a CCD camera, or the like
  • lattice is defined like the following numerical formula 1.
  • d is the interval d.
  • m represents the order of the diffracted light, and m is 1 for the first-order diffracted light.
  • ⁇ is the diffraction angle of the diffracted light with respect to the light incident on the grating, and is fixed at 43 ° in the present invention. Further, ⁇ is the wavelength of diffracted light diffracted from the grating.
  • the letter or figure 2 is set to the alphabet T, etc., and each groove (grating) is formed so as to have two or more different intervals d1 and d2, and the interval d1 or d2 is set to At least two or more different intervals of 1020 nm, 784 nm, or 659 nm may be set.
  • the wavelength ⁇ of the first-order diffracted light is 696 nm when the distance d1 or d2 is 1020 nm
  • the wavelength ⁇ is 535 nm when it is 784 nm
  • the wavelength ⁇ when it is 659 nm Becomes 449 nm. Therefore, it becomes possible to clearly diffract light of two or more colors having any one of the three primary colors of red, green, and blue (RGB), and the work of authenticity determination can be further facilitated.
  • the character or graphic 3 may be formed so that the lattice interval d of the character or graphic 3 is fixed to a constant value and the lattice has two or more different groove angles ⁇ 1 and ⁇ 2. good.
  • the lattice is divided into two locations, FIG. 5 (b) shows a location where the groove angle ⁇ 1 is 30 °, and FIG. 5 (c) shows a location where the groove angle ⁇ 2 is 45 °.
  • FIG. 2B is an enlarged view in a circle C in FIG. 1A, and FIG. 2C is an enlarged view in a circle D in FIG. 1A.
  • the groove angles ⁇ 1 and ⁇ 2 are angles with respect to the X-axis direction, respectively.
  • the lattice so as to have two or more different groove angles, imitation of counterfeiting measures itself can be made more difficult, so it is possible to further increase the prevention of forgery of genuine products. It becomes.
  • the interval d between the respective gratings formed at the groove angle ⁇ 1 or ⁇ 2 may be set to be different from each other.
  • the metal glass preferably contains Pt as a main component.
  • Pt as a main component.
  • the manufacture of characters and figures is easy and the transferability is excellent, so that a single structure of less than 10 ⁇ m can be realized by transfer.
  • the reason for its ease of production and high transferability is that it has Pt as the main component, has a supercooled liquid temperature range of 30K or higher at a temperature increase rate of 0.67 K / s, and is inelastic with respect to the compression direction. This is because the region appears and exhibits a plastic elongation of at least 0.5% from the start point of the inelastic region to the fracture, and the yield stress (or proof stress) is at least 1000 MPa.
  • the composition (at%) of the Pt-based metallic glass include Pt 48.75, Pd 9.75, Cu 19.5, and P 22 (Pt 48.75 Pd 9.75 Cu 19.5 P 22 alloy).
  • FIGS. 1 to 5 show the characters or graphics 1 to 3 in which a lattice is formed in the plane direction.
  • at least a part of the lattice 5 may be formed in at least a part of the thickness direction (Z-axis direction) of the character or figure 4.
  • FIG. 6 shows an example in which a corrugated lattice 5 is formed at the bottom of a character or figure 4 in the thickness direction.
  • 6A schematically shows an alphabet T-shaped character or figure 4 in which a lattice 5 is formed at the bottom in the thickness direction
  • FIG. 6B shows ensuring the visibility of the lattice 5.
  • the height t of the grating 5 in the thickness direction (Z-axis direction) may be set to 30 ⁇ m or less. Further, the interval d of the grating 5 is set within a range of less than 10 ⁇ m.
  • the first-order diffracted light having at least one or more wavelengths in the visible light region is diffracted from the grating 5 and reflected from the side surface of the character or figure 4.
  • lattice 5 is not limited to a bottom part, It can form in any location of the thickness of the character or the figure 4.
  • FIG. 6 the lattice 5 is formed only on the bottom of a part of the side surface of the character or graphic 4. However, the lattice may be formed over the entire circumference of the bottom.
  • These letters or figures 1 to 4 are used for wristwatch exterior parts (including dials and watch band buckles) or movement parts, accessories accessories (rings, necklaces, earrings, bracelets, etc.), tags It is formed by pressing or engraving on the bulk body of the fastener.
  • a character or a figure is used as a pressed material, and the pressed material is any one or more of a predetermined lattice, slit, protrusion, hole, or latent image.
  • a transfer mold for transferring the shape and a transfer device for performing the transfer are required.
  • the transfer mold is a mold in which one or more shapes of a predetermined lattice, slit, protrusion, hole, or latent image are formed.
  • the grating is the most preferable among the grating, the slit, the protrusion, the hole, or the latent image.
  • the inverted shape of the structure to be obtained is formed.
  • the grating has a corrugated uneven shape as shown in FIG. 2, a V-shaped triangular wave shape (FIG. 3A), or a rectangular uneven shape (FIG. 3B) with a constant interval d, Alternatively, a large number are formed at two or more different intervals d1 and d2. Therefore, the mold also needs to have a corresponding uneven shape.
  • FIG. 7 shows a transfer device 6 including a transfer mold 9 having a concavo-convex shape corresponding to the waveform of FIG.
  • the uneven shape of the mold 9 is designed and manufactured based on the diffraction conditions such as the wavelength and diffraction angle of the first-order diffracted light to be obtained.
  • the mold 9 is made of silicon or the like, and the uneven shape is formed by 110-plane anisotropic etching of silicon.
  • the concavo-convex shape formed by the 110-plane anisotropic etching of silicon has a very advantageous feature for the manufacture of a grating, that is, its accuracy is high and its surface becomes a mirror surface.
  • Characters or figures 7 are formed on the bulk body to form a pressed material. Furthermore, the metallic glass as described above is used as a bulk material on which characters or figures are formed. Therefore, it is preferable that the character or figure 7 is made of metallic glass, and at least a portion where a lattice is formed is made of metallic glass.
  • the transfer device 6 is a device capable of hot pressing and cooling after pressing, and has an upper die 8 and a lower die 10.
  • a mold 9 is attached to the upper mold 8, a character or figure 7 as a pressed material is placed on the lower mold 10, the upper and lower molds 8 and 10 are pressed, and the transfer surface shape of the mold 9 (predetermined) Or any one of two or more shapes of a lattice, a slit, a protrusion, a hole, or a latent image) is transferred to a character or graphic 7.
  • the mold 9 is attached to the upper mold 8 so that the transfer surface of the mold 9 faces the lower mold 10, and the character or figure 7 as a pressed material is placed on the lower mold 10.
  • the character or figure 7 is taken out from the transfer device 6 after the transfer is completed, it is pressed in advance before processing the structure so that the size H and thickness T of the character or figure are the desired size. It is preferable to adjust by processing or engraving.
  • the interval d between the lattices formed on the transfer surface of the mold 9 is preferably set within a range of less than 10 ⁇ m as described above.
  • the size of the single structure in the shape of the transfer surface of the mold formed in each structure is preferably set to be less than 10 ⁇ m.
  • the character or figure 7 and the mold 9 are heated.
  • the part of the character or figure 7 formed of at least metal glass is heated.
  • the heating temperature of the character or figure 7 is set to a temperature not lower than the glass transition temperature of the metallic glass and not higher than the crystallization temperature (heating step).
  • the biggest factor that impairs the properties of metallic glass whose main phase is an amorphous phase is crystallization of a phase that is regarded as amorphous.
  • heat is generated due to the transition from the amorphous phase (metastable phase) to the crystalline phase (stable phase).
  • the driving speed of crystallization is extremely fast, and the amorphous state is instantaneously generated.
  • the phase considered quality disappears. Therefore, it is necessary to set the heating temperature of the character or figure 7 to be equal to or lower than the crystallization temperature of the metal glass.
  • Metallic glass is an amorphous alloy that has a stable supercooled liquid temperature range and exhibits a complete Newtonian viscous flow in this supercooled liquid temperature range.
  • Metallic glass is capable of viscous flow processing at low stress in the supercooled liquid temperature range, and has excellent fine forming characteristics (fine shape transferability). Therefore, a fine structure can be produced with high accuracy by transfer molding in which the metallic glass is pressed against the mold in the supercooled liquid temperature range.
  • the glass transition temperature differs depending on the type of metal glass.
  • the heating method of the character or figure 7 and the metal mold 9 is not particularly limited.
  • the upper and lower molds 8 and 10 can be heated with an infrared heater or the like.
  • an inert gas atmosphere such as nitrogen, argon, or helium, or in a vacuum.
  • the upper die 8 is lowered while maintaining the heating temperature of the character or figure 7 and the die 9.
  • a predetermined load is applied for a predetermined time. Hold (transfer process).
  • a weighting of 30 to 60 MP is added for about 1 to 3 minutes. In this way, any one or more structures of a lattice, a slit, a protrusion, a hole, or a latent image are transferred to at least a part of a character or graphic.
  • the character or figure 7 and the mold 9 are cooled, and the pressing of the mold 9 is released.
  • the upper die 8 is pulled up and pulled away from the lower die 10 when the temperature at which the shape to which the character or figure 7 is transferred can be maintained at a temperature lower than the glass transition temperature of the metal glass used for the character or figure. (Release process). In this way, the biting of the metallic glass on the mold 9 due to the heat shrinkage during cooling can be minimized.
  • the upper mold 8 is preferably pulled up until the mold 9 is completely separated from the character or graphic 7.
  • the cooling method is not particularly limited, and for example, the upper and lower molds 8 and 10 may be cooled with nitrogen gas or the like.
  • the character or figure 7 is continuously cooled to room temperature (cooling process), and finally, the upper mold 8 is completely pulled up and the character or figure 7 is taken out from the lower mold 10 of the transfer device 6.
  • any one or two or more of a predetermined lattice, slit, protrusion, hole, or latent image is formed by one transfer molding. Or since it can form in a figure, it becomes possible to implement
  • the structure can be formed into characters or figures with good reproducibility by transfer, the structure can be manufactured with high quality. Therefore, even if the structure is manufactured by imitation using a different material, it is possible to immediately distinguish the difference from the counterfeit product by comparing the quality (manufacturing variation and accuracy) of the structure surface.
  • the mold 9 is formed by silicon 110-plane anisotropic etching.
  • the shape of the transfer surface of the mold 9 may be formed by cutting using a stainless steel diamond cutter, ion etching of quartz glass, ion milling, or focused ion beam processing.
  • any one or more of the predetermined structures may be formed by die casting or injection molding as a casting method.
  • a structure is formed by die casting or injection molding, first, the shape of one or more of the predetermined lattice, slit, protrusion, hole, or latent image described above, and the shape of a character or figure At least a formed mold is prepared. Further, any of the metallic glasses is melted as a bulk material, and the molten metallic glass is poured into a mold and cooled.
  • the injection molding is regarded as a kind of casting, and the injection molding is defined as including a manufacturing method using molten metal glass.
  • the interval d of the lattice formed in the mold is set within a range of less than 10 ⁇ m as described above.
  • the size of the single structure in the shape of the mold formed in the shape of each structure is preferably set to less than 10 ⁇ m.
  • the temperature of the molten metal glass is set to the melting point or higher.
  • the melting method of metallic glass is not specifically limited.
  • the temperature of the molten metal glass is set to the melting point or higher even in the injection molding.
  • any one or two or more of predetermined grids, slits, protrusions, holes, or latent images can be formed together with characters or figures in a single molding. Therefore, it is possible to realize a method for manufacturing a bulk body according to the present invention which is low in cost and excellent in mass productivity.
  • the structure can be formed into characters or figures with good reproducibility by casting, the structure can be manufactured with high quality. Therefore, even if the structure is manufactured by imitation using a different material, it is possible to immediately distinguish the difference from the counterfeit product by comparing the quality (manufacturing variation and accuracy) of the structure surface.
  • the cooling rate during molding is preferably set to 300 ° C./second or more (more preferably 104 ° C./second or more) and 107 ° C./second or less.
  • a femtosecond laser is scanned and irradiated on at least a part of the character or the figure to ablate a part of the bulk body that forms the character or the figure. Any one or more of the structures may be formed.
  • the grating may be formed by setting the distance d within a range of less than 10 ⁇ m with a femtosecond laser.
  • the femtosecond laser used in the present invention needs to have a laser intensity equal to or higher than the processing threshold of metal glass. Specifically, a pulse width of 150 fs to 1 ps, a repetition frequency of 1 kHz to 300 kHz, a wavelength of 780 nm to 800 nm, and an average output of around 1 W can be used.
  • a pulse laser having a pulse width of 1 ps or less is preferable. This is because a laser with a short pulse width has a laser intensity of 10 TW / cm 2 or more, and it is easier to cause ablation of a bulk body that forms characters or figures.
  • the grating 5 may be formed by pressing the mold against a side surface that is at least part of the thickness direction of the character or figure.
  • a bulk body is prepared in which a mold having a lattice shape formed in at least part of the thickness direction of a character or figure shape is melted, and the metallic glass that is a bulk body material is melted and melted in the mold
  • the lattice 5 may be formed in at least part of the thickness direction of the characters or figures by pouring material and casting.
  • the lattice 5 may be easily manufactured at low cost and with high mass productivity.
  • the characters or figures formed on the bulk body according to the present invention are manufactured by transfer, casting, or femtosecond laser irradiation. Also good. By producing characters or figures in this way, it is possible to produce characters or figures that satisfy both conflicting requirements of facilitating authenticity determination and prevention of counterfeiting at low cost and with high productivity.
  • a lattice having at least two grooves d of different intervals d of either 1020 nm, 784 nm, or 659 nm may be formed into characters or figures by transfer, casting, or femtosecond laser irradiation.
  • a lattice having at least two grooves d of different intervals d of either 1020 nm, 784 nm, or 659 nm may be formed into characters or figures by transfer, casting, or femtosecond laser irradiation.
  • the lattice may be transferred to a character or a figure by two or more different groove angles ⁇ 1 and ⁇ 2, cast, or formed by femtosecond laser irradiation.
  • the metallic glass may be formed by transferring, casting, or irradiating a femtosecond laser with a lattice of characters or figures as metallic glass containing Pt as a main component.
  • the bulk body and letters or figures according to this example were made of metal glass and formed into an alphabetic I shape when viewed from the X-axis-Y-axis plane direction.
  • the size H in the height direction of the alphabet was set to 2 mm, and the thickness T in the Z-axis direction was set to 1 mm.
  • the metallic glass was a Pt-based metallic glass, and the composition (at%) was Pt 48.75, Pd 9.75, Cu 19.5, P 22 (Pt 48.75 Pd 9.75 Cu 19.5 P 22 alloy).
  • a corrugated lattice as shown in FIG. 2B was formed. As shown in FIG. 1, the lattice was formed in the plane portion over the surface direction. The depth h of each groove of the lattice was 270 nm, and the lattice was directly formed in the alphabet so as to be parallel to the X axis as shown in FIG.
  • each lattice was produced using the same transfer device.
  • the mold was made of silicon, and the concavo-convex shape of the transfer surface was formed by 110-plane anisotropic etching of silicon.

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Abstract

[Problem] To provide a new counterfeiting prevention measure, and a production method therefor, that exhibits an increased counterfeiting prevention effect by applying the counterfeiting prevention measure directly to the letters of a brand logo formed on a product itself or a graphic such as a trademark indicating the brand or maker. [Solution] In the present invention, letters or a graphic is formed on a bulk body, the letters or graphic is heated, and then a mold in which is formed the shape of any of a specific grid, slit, protrusion, hole, or latent image is pressed against the letters or graphic. Any of the grid, slit, protrusion, hole, or latent image is transferred to at least a portion of the letters or graphic, and then after the transfer, the mold is separated from the letters or graphic by cooling and releasing pressing force. By further cooling or casting the letters or graphic, at least one of the specific grid, slit, protrusion, hole, or latent image is formed on at least a portion of the letters or the graphic. The bulk body on which the letters or graphic are formed is provided to a housing component or a movement for a wristwatch, an accoutrement, a tag, or a fastener.

Description

バルク体、腕時計用の外装部品かムーブメント、装身具、タグ、又はファスナー、及びこれらの製造方法Bulk body, wristwatch exterior parts or movements, jewelry, tags, or fasteners, and methods of manufacturing the same
　本発明は、文字又は図形が形成されたバルク体、及びバルク体の製造方法に関する。 The present invention relates to a bulk body in which characters or figures are formed and a method for manufacturing the bulk body.
　有名ブランドのアパレルやバック、腕時計をはじめ、家庭用エレクトロニクス機器や産業用機器、自動車、又は装身具と云った趣味性の物品など様々な製品に関して、模倣品による被害が広がっている。模倣品が企業に与える損害は大きく、例えば低価格の模倣品が出回ると真正品の販売機会の損失だけでなく、ビジネスモデルの破綻にもなりかねない。また粗悪な模倣品により悪い風評が広がると、長年に亘って育んできたブランドイメージの信用を失うことにもなりかねない。 Damage caused by counterfeits is spreading on various products such as apparel and bags of famous brands, watches, household electronics equipment, industrial equipment, automobiles, and hobby goods such as accessories. The damage caused by counterfeit goods to a company is large. For example, if low-cost counterfeit goods are available, not only the loss of sales opportunities for genuine products but also the failure of the business model may occur. In addition, if bad reputation spreads by bad imitation products, it may lose the trust of the brand image that has been nurtured over the years.
　こうした模倣品による被害を防ぐために、真正品と模倣品を識別する技術が数多く登場している。その中で広く使われているのがホログラムを利用した偽造防止ラベルである（例えば、特許文献１を参照）。ホログラムとは、光の干渉を利用して平面上に立体的に見える画像を記録する技術である。このホログラムを利用した偽造防止ラベルを、真性品そのもの、または製品の真性証明書やパッケージに貼り付けることで、その品物が真性品であることを証明している。 In order to prevent damage caused by such counterfeit products, a number of technologies for identifying genuine products and counterfeit products have appeared. Among them, a forgery prevention label using a hologram is widely used (for example, see Patent Document 1). Hologram is a technique for recording an image that appears three-dimensionally on a plane by using interference of light. The anti-counterfeit label using this hologram is affixed to the authentic product itself, or to the authentic certificate or package of the product, thereby proving that the product is an authentic product.
　ホログラムを利用した偽造防止ラベルは、比較的簡単に導入できることから、既に様々な分野で模倣品対策として使われている。 ホ ロ グ ラ ム Anti-counterfeit labels using holograms are already used as counterfeit products in various fields because they can be introduced relatively easily.
特開２００３－２２０６６２JP2003-220661
　このように、様々な分野で模倣品対策として使われている偽造防止ラベルだが、最近になって偽造防止効果の低下が懸念されている。ホログラムの装飾像や立体像の製造技術が普及するまでは、ホログラムの作製技術は比較的高度な技術であったため、偽造防止効果が充分に保たれていた。 As described above, although it is an anti-counterfeit label used as a countermeasure against counterfeit goods in various fields, recently there is a concern that the anti-counterfeiting effect is lowered. Until the production of hologram decoration images and stereoscopic images became widespread, hologram production technology was a relatively advanced technology, so that the effect of preventing forgery was sufficiently maintained.
　しかしながら、ホログラムの作製技術が広く普及したことで、模倣品を手掛ける製造業者が簡単に偽のホログラムを大量に手に入れることが可能になってきた。このため、ホログラムに代わる新たな偽造防止対策を求める声が、市場で急速に高まっている。 However, with the widespread use of hologram production technology, manufacturers of counterfeit products can easily obtain large numbers of fake holograms. For this reason, the demand for new forgery prevention measures to replace holograms is rapidly increasing in the market.
　本発明は、上記事情に鑑みてなされたものであり、製品そのものに形成されるブランドロゴの文字や、ブランドや製造者を示すトレードマークと云った図形に直接、偽造防止対策を施すことで、より一層の偽造防止効果を有する新たな偽造防止対策とその製造方法の提供を、課題とする。 The present invention has been made in view of the above circumstances, and by taking anti-counterfeiting measures directly on the characters of the brand logo formed on the product itself, and the figure called the trademark indicating the brand and manufacturer, It is an object to provide a new anti-counterfeiting measure having a further anti-counterfeit effect and a manufacturing method thereof.
　更に、本発明は新たな偽造防止対策の着目点として、前記文字や図形に偽造防止対策を施していること自体を、一見しただけでは発見されない構造とする。このような構造の偽造防止対策を施すことで、真性品の何処に偽造防止対策を施しているのか、又は、何を以て偽造対策としているのか自体を判別困難にして、模倣品の製造業者が容易に偽造防止対策自体を模倣できないようにする。このように、より一層偽造防止を高めた新たな偽造防止対策とその製造方法の提供を、本発明は課題とする。 Furthermore, the present invention has a structure that cannot be found at first glance, as a focus of a new anti-counterfeiting measure, that the anti-counterfeiting measure is applied to the characters and figures. By taking anti-counterfeiting measures of such a structure, it is difficult for the manufacturer of counterfeit products to make it difficult to determine where the anti-counterfeiting measures of the genuine product are taken or what is the anti-counterfeiting measure itself. To prevent imitation of anti-counterfeiting measures themselves. Thus, an object of the present invention is to provide a new anti-counterfeiting measure and a method for manufacturing the same, which further enhances anti-counterfeiting.
　前記課題は、以下の本発明により達成される。即ち、本発明のバルク体は文字又は図形が形成され、更にその文字又は図形の少なくとも一部に、格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上が形成されていることを特徴とする。 The above object is achieved by the present invention described below. That is, the bulk body of the present invention is formed with characters or figures, and at least a part of the letters or figures is formed with one or more of lattices, slits, protrusions, holes, or latent images. It is characterized by being.
　本発明のバルク体の一実施形態は、格子、スリット、突起、穴、又は潜像の内、格子が少なくとも一部に形成されており、更に格子が、ガラス質金属単相を含む金属ガラス、昇温速度0.67Ｋ／ｓで30Ｋ以上の過冷却液体温度域を有するガラス質金属単相を含む金属ガラス、100ｎｍ以下の粒径を有する結晶を含む金属ガラス、或いはガラス質金属組織を体積率で50％以上含む金属ガラスの何れかから成り、格子の溝の間隔が10μｍ未満の範囲内に設定されていることが好ましい。 In one embodiment of the bulk body of the present invention, a lattice is formed in at least a part of a lattice, a slit, a protrusion, a hole, or a latent image, and the lattice further includes a metallic glass including a vitreous metal single phase, Metal glass containing a vitreous metal single phase having a supercooled liquid temperature range of 30K or higher at a heating rate of 0.67 K / s, metal glass containing crystals having a particle size of 100 nm or less, or vitreous metal structure by volume ratio It is preferably made of any of metallic glass containing 50% or more, and the interval between the grooves of the lattice is preferably set within a range of less than 10 μm.
　本発明のバルク体の他の実施形態は、格子の溝の間隔が、527ｎｍ以上1217ｎｍ以下の範囲内に設定されていることが好ましい。 In another embodiment of the bulk body of the present invention, it is preferable that the interval between the grooves of the lattice is set in a range of 527 nm to 1217 nm.
　本発明のバルク体の他の実施形態は、格子の溝が、２つ以上の異なる間隔を有しており、間隔が1020ｎｍ、784ｎｍ、又は659ｎｍの何れかの、少なくとも２つ以上の異なる間隔であることが好ましい。 In another embodiment of the bulk body of the present invention, the grating grooves have two or more different spacings, and the spacing is at least two or more different spacings of either 1020 nm, 784 nm, or 659 nm. Preferably there is.
　本発明のバルク体の他の実施形態は、格子の溝が、更に、２つ以上の異なる溝角度を有することが好ましい。 In another embodiment of the bulk body of the present invention, it is preferable that the grooves of the lattice further have two or more different groove angles.
　本発明のバルク体の他の実施形態は、金属ガラスが、Ptを主成分とすることが好ましい。 In another embodiment of the bulk body of the present invention, it is preferable that the metallic glass is mainly composed of Pt.
　本発明のバルク体の他の実施形態は、格子の少なくとも一部が、文字又は図形の厚み方向の少なくとも一部に形成されていることが好ましい。 In another embodiment of the bulk body of the present invention, it is preferable that at least a part of the lattice is formed in at least a part in the thickness direction of a character or a figure.
　また、本発明の腕時計用の外装部品かムーブメント、装身具、タグ、又はファスナーは、前記何れかに記載のバルク体を備えることを特徴とする。 Further, an exterior part or a movement, accessory, tag or fastener for a wristwatch according to the present invention is characterized by comprising the bulk body described above.
　また、本発明のバルク体の製造方法は、バルク体に文字又は図形を形成し、文字又は図形の形成後に文字又は図形を加熱し、更に、所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上の形状が形成された金型を文字又は図形に押圧して、格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上を、文字又は図形の少なくとも一部に転写し、転写後に文字又は図形を冷却して金型の押圧を解除し、金型を文字又は図形から離型し、更に文字又は図形を冷却するか、
　又は少なくとも所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上の形状と、文字又は図形の形状が形成された金型を用意すると共に、バルク体材料を溶融し、その金型に溶融したバルク体材料を流し込み、鋳造により文字又は図形の少なくとも一部に、所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上を形成することを特徴とする。 In the bulk body manufacturing method of the present invention, a character or a figure is formed on the bulk body, the character or figure is heated after the formation of the character or figure, and a predetermined lattice, slit, protrusion, hole, or latent image is formed. Any one or two or more of a lattice, a slit, a protrusion, a hole, or a latent image is pressed on a character or a figure by pressing a mold on which any one or two or more shapes are formed. Transfer to at least a part of the figure, cool the character or figure after transfer, release the press of the mold, release the mold from the letter or figure, and further cool the letter or figure,
Alternatively, prepare a mold having at least one of a predetermined lattice, slit, protrusion, hole, or latent image and a character or figure, and melt the bulk material. The molten bulk material is poured into the mold, and at least a part of a predetermined lattice, slit, protrusion, hole, or latent image is formed on at least a part of the character or figure by casting. It is characterized by.
　本発明のバルク体の製造方法の一実施形態は、文字又は図形の少なくとも一部を、ガラス質金属単相を含む金属ガラス、昇温速度0.67Ｋ／ｓで30Ｋ以上の過冷却液体温度域を有するガラス質金属単相を含む金属ガラス、100ｎｍ以下の粒径を有する結晶を含む金属ガラス、或いはガラス質金属組織を体積率で50％以上含む金属ガラスの何れかで形成すると共に、更に文字又は図形の形成後に、所定の格子、スリット、突起、穴、又は潜像の内、格子の形状が形成された金型を用意し、格子の溝の間隔を10μｍ未満の範囲内に設定し、少なくとも金属ガラスを加熱し、加熱した金属ガラスに、所定の格子の形状が形成された金型を押圧して、格子を金属ガラスに転写し、転写後に金属ガラスを冷却して金型の押圧を解除し、金型を金属ガラスから離型し、更に金属ガラスを冷却するか、
　又は少なくとも格子の形状と、文字又は図形の形状が形成された金型を用意すると共に、バルク体材料として金属ガラスを溶融し、その金型に溶融した金属ガラスを流し込み、鋳造により文字又は図形の少なくとも一部に、溝の間隔10μｍ未満の範囲内で格子を形成することが好ましい。 In one embodiment of the method for producing a bulk body of the present invention, at least a part of characters or figures is a metallic glass containing a glassy metal single phase, a supercooled liquid temperature range of 30 K or more at a heating rate of 0.67 K / s. It is formed of any one of a metal glass containing a glassy metal single phase, a metal glass containing a crystal having a particle size of 100 nm or less, or a metal glass containing a vitreous metal structure at a volume ratio of 50% or more. After the formation of the figure, prepare a mold in which a predetermined lattice, slit, protrusion, hole, or latent image of the shape of the lattice is formed, and set the interval between the grooves of the lattice within a range of less than 10 μm, Heat the metal glass, press the mold with the predetermined grid shape on the heated metal glass, transfer the grid to the metal glass, cool the metal glass after the transfer and release the mold press And mold release from metal glass Further cooling or metallic glass,
Alternatively, at least a mold having a lattice shape and a character or figure shape is prepared, a metal glass is melted as a bulk material, and the molten metal glass is poured into the mold, and the character or figure is cast by casting. It is preferable to form a lattice at least partially within a range of a groove interval of less than 10 μm.
　本発明のバルク体の製造方法の他の実施形態は、格子の溝の間隔を、527ｎｍ以上1217ｎｍ以下の範囲内に設定することが好ましい。 In another embodiment of the method for producing a bulk body of the present invention, it is preferable to set the interval between the grooves of the lattice within a range of 527 nm to 1217 nm.
　本発明のバルク体の製造方法の他の実施形態は、格子の溝として、1020ｎｍ、784ｎｍ、又は659ｎｍの何れかの、少なくとも２つ以上の異なる間隔を形成することが好ましい。 In another embodiment of the method for producing a bulk body of the present invention, it is preferable that at least two or more different intervals of 1020 nm, 784 nm, or 659 nm are formed as the grooves of the lattice.
　本発明のバルク体の製造方法の他の実施形態は、格子の溝に、更に、２つ以上の異なる溝角度を形成することが好ましい。 In another embodiment of the method for producing a bulk body of the present invention, it is preferable to further form two or more different groove angles in the grooves of the lattice.
　本発明のバルク体の製造方法の他の実施形態は、金属ガラスを、Ptを主成分とする金属ガラスとすることが好ましい。 In another embodiment of the method for producing a bulk body of the present invention, the metal glass is preferably a metal glass containing Pt as a main component.
　本発明のバルク体の製造方法の他の実施形態は、格子の形状が形成された金型を用意すると共に、金型による押圧を、文字又は図形の厚み方向の少なくとも一部に施すか、
　又は、少なくとも格子の形状が、文字又は図形の形状の厚み方向の少なくとも一部に形成された金型を用意すると共に、バルク体材料を溶融し、その金型に溶融したバルク体材料を流し込み、鋳造により文字又は図形の厚み方向の少なくとも一部に、格子を形成することが好ましい。 In another embodiment of the method for producing a bulk body of the present invention, a mold having a lattice shape is prepared, and pressing by the mold is performed on at least a part in the thickness direction of a character or a figure,
Alternatively, a mold having at least a lattice shape formed in at least part of the thickness direction of the character or figure shape is prepared, the bulk body material is melted, and the molten bulk body material is poured into the mold, It is preferable to form a lattice on at least part of the thickness direction of the characters or figures by casting.
　また、本発明の腕時計用の外装部品かムーブメント、装身具、タグ、又はファスナーの製造方法は、腕時計用の外装部品かムーブメント、装身具、タグ、又はファスナーの少なくとも一部に、前記何れかに記載のバルク体を備えることを特徴とする。 In addition, the method of manufacturing an exterior part or movement, accessory, tag, or fastener for a wristwatch according to the present invention is described in any one of the above, on at least a part of the exterior part or movement, accessory, tag, or fastener for a watch. A bulk body is provided.
　本発明に係るバルク体に依れば、製品そのものに備えられるバルク体に形成される文字や図形に直接、偽造防止対策の構造体を形成することで、真性品そのものに偽造防止対策が直接施される。従って、偽造防止ラベルのように真贋を見分ける物を別途、製品に後付けしないので、製品そのもので真贋を判定することが可能となるため、偽造防止ラベルの貼り替えによる虚偽が防止され、信頼性の高い偽造防止効果を製品に持たせることが可能となる。 According to the bulk body of the present invention, the anti-counterfeiting structure is directly applied to the genuine product itself by forming the anti-counterfeiting structure directly on the characters and figures formed on the bulk body provided in the product itself. Is done. Therefore, since a product that distinguishes authenticity, such as an anti-counterfeit label, is not attached to the product separately, it is possible to judge the authenticity of the product itself. It becomes possible to give the product a high anti-counterfeit effect.
　更に、格子の溝の間隔を10μｍ未満の範囲内に設定することにより、文字又は図形を目視により一見しただけでの偽造防止対策の構造体の発見を、困難なものとすることが出来る。更に、文字や図形を形成したバルク体を真性品に備えることにより、従来の偽造防止ラベルのような真贋を見分ける物を、別途後付けする必要も無い。従って、真性品の何処に偽造防止対策を施しているのか、又は、何を以て偽造防止対策としているのか自体を判別困難にすることが可能となり、模倣品の製造業者が容易に偽造防止対策自体を模倣できないようにさせることが出来る。よって一層、真性品の偽造防止を高めることが可能となる。 Furthermore, by setting the interval between the grooves of the lattice within a range of less than 10 μm, it is possible to make it difficult to find a structure for preventing forgery by simply looking at the characters or figures. Further, by providing the genuine article with a bulk body in which characters and figures are formed, it is not necessary to separately attach an object for identifying authenticity such as a conventional anti-counterfeit label. Therefore, it is possible to make it difficult to determine where the genuine product is taking anti-counterfeit measures or what is the anti-counterfeit measure itself, and the manufacturer of counterfeit products can easily take the anti-counterfeit measure itself. It can be made not to imitate. Therefore, it becomes possible to further increase the prevention of forgery of genuine products.
　更に格子を、ガラス質金属単相を含む金属ガラス、昇温速度0.67Ｋ／ｓで30Ｋ以上の過冷却液体温度域を有するガラス質金属単相を含む金属ガラス、100ｎｍ以下の粒径を有する結晶を含む金属ガラス、或いはガラス質金属組織を体積率で50％以上含む金属ガラスの何れかから形成することにより、構造体を別材料で模倣製造したものと比較し、格子表面の転写性や格子の各単一構造の転写性に優れ、製造ばらつきが少なく精度の高い形状の構造体が実現可能となるので、より、模倣品との違いを即座に見分けることが可能となる。 Furthermore, the lattice includes a metallic glass containing a glassy metallic single phase, a metallic glass containing a vitreous metallic single phase having a supercooled liquid temperature range of 30 K or more at a heating rate of 0.67 K / s, and a crystal having a particle size of 100 nm or less. Compared with the one that imitates the structure with another material by forming it from either metallic glass containing glass or metallic glass containing 50% or more by volume of the vitreous metal structure. Therefore, it is possible to realize a structure having a highly accurate shape with excellent manufacturing and transferability of each single structure. Therefore, it is possible to immediately distinguish a difference from a counterfeit product.
　更に、格子の溝の間隔を527ｎｍ以上1217ｎｍ以下の範囲内に設定することにより、格子に光を入射させた場合、可視光領域の少なくとも１つ又は複数の波長を有する１次回折光が回折されて、反射する。それらの回折反射光の有無を肉眼又はフォトダイオード等の受光素子、CCDカメラ等で判別することにより、構造体が施された文字又は図形であるか否かを容易に判別可能となる。よって、偽造業者に対しては構造体自体の発見を困難にすると共に、文字又は図形が回折特性を有することで、真性品の製造業者等による真贋判定の作業は容易化することが可能となる。従って、真贋判定の容易化と偽造防止と云う、相反する２つの要求を両立させることが出来る。 Further, by setting the interval between the grooves of the grating within the range of 527 nm to 1217 nm, when light is incident on the grating, the first-order diffracted light having at least one or more wavelengths in the visible light region is diffracted. ,reflect. By determining the presence or absence of such diffracted reflected light with the naked eye or a light-receiving element such as a photodiode, a CCD camera, or the like, it is possible to easily determine whether the structure is a character or a figure. Therefore, it is difficult for a counterfeiter to find the structure itself, and the character or figure has diffraction characteristics, so that it is possible to facilitate the work of authenticity determination by an authentic product manufacturer or the like. . Therefore, it is possible to satisfy both conflicting demands of facilitating authenticity determination and preventing forgery.
　更に格子の少なくとも一部を、文字又は図形の厚み方向の少なくとも一部に形成することにより、文字又は図形を平面方向から見たとしても、文字又は図形の平面には格子は無いため、目視により一見しただけでは格子自体を発見することは不可能である。無論、文字や図形を形成したバルク体を真性品に備えることにより、真贋を見分ける物を、別途後付けする必要も無い。従って、真性品の何処に偽造防止対策を施しているのか、又は、何を以て偽造防止対策としているのか自体を判別困難にすることがより一層可能となり、偽造防止対策自体の模倣をできないようにさせ、より一層、真性品の偽造防止を高めることが可能となる。 Furthermore, by forming at least a part of the lattice in at least a part of the thickness direction of the character or figure, even if the character or figure is viewed from the plane direction, there is no lattice in the plane of the character or figure. At first glance, it is impossible to discover the lattice itself. Of course, it is not necessary to separately attach an object for distinguishing authenticity by providing the genuine product with a bulk body formed with characters and figures. Therefore, it is possible to make it more difficult to determine where the genuine product is taking anti-counterfeit measures or what is the anti-counterfeit measure itself, and prevent counterfeit prevention measures themselves from being imitated. Furthermore, it becomes possible to further improve the prevention of forgery of genuine products.
　また本発明に係るバルク体の製造方法に依れば、所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上を、一回の成形で、文字又は図形に形成することが出来るため、低コストで量産性に優れた本発明に係るバルク体の製造方法を実現することが可能となる。 Further, according to the method for manufacturing a bulk body according to the present invention, any one or two or more of a predetermined lattice, slit, protrusion, hole, or latent image is formed into a character or a figure by one molding. Therefore, it is possible to realize a method for manufacturing a bulk body according to the present invention, which is low in cost and excellent in mass productivity.
（a）バルク体に形成された、本実施形態に係る文字又は図形の一例を模式的に示す平面図である。（b）図１（a）の円Ａ内の拡大図である。(A) It is a top view which shows typically an example of the character or figure which concerns on this embodiment formed in the bulk body. (B) It is an enlarged view in circle A of Drawing 1 (a). （a）図１に示す文字の斜視図である。（b）図２（a）に示す文字を、Ｂ－Ｂ切断線方向から見た時の拡大側断面図である。(A) It is a perspective view of the character shown in FIG. (B) It is an expanded sectional side view when the character shown in FIG. 2 (a) is seen from the BB cutting line direction. （a）本実施形態に係るバルク体の文字又は図形に形成される、格子の溝形状の変更例を示す拡大側断面図である。（b）本実施形態に係るバルク体の文字又は図形に形成される、格子の溝形状の別の変更例を示す拡大側断面図である。(A) It is an expanded sectional side view which shows the example of a change of the groove shape of a grating | lattice formed in the character or figure of the bulk body concerning this embodiment. (B) It is an expanded sectional side view which shows another example of a change of the groove shape of a grating | lattice formed in the character or figure of the bulk body which concerns on this embodiment. ２つ以上の異なる間隔の溝を有する格子が形成された、本実施形態に係るバルク体に形成される文字又は図形の一例を模式的に示す平面図である。It is a top view which shows typically an example of the character or figure formed in the bulk body which concerns on this embodiment in which the grating | lattice which has a groove | channel of two or more different space | intervals was formed. （a）２つ以上の異なる溝角度を有する格子が形成された、本実施形態に係るバルク体に形成される文字又は図形の一例を、模式的に示す平面図である。（b）図５（a）の円Ｃ内の拡大図である。（c）図５（a）の円Ｄ内の拡大図である。(A) It is a top view which shows typically an example of the character or figure formed in the bulk body which concerns on this embodiment in which the grating | lattice which has two or more different groove | channel angles was formed. (B) It is an enlarged view in circle C of Drawing 5 (a). (C) It is an enlarged view in circle D of Drawing 5 (a). （a）厚み方向の底部に格子が形成された、本実施形態に係るバルク体に形成される文字又は図形の一例を、模式的に示す斜視図である。（b）図６（a）に示す格子部分のみを実線で示した斜視図である。(A) It is a perspective view which shows typically an example of the character or figure formed in the bulk body which concerns on this embodiment by which the grating | lattice was formed in the bottom part of the thickness direction. (B) It is the perspective view which showed only the lattice part shown to Fig.6 (a) by the continuous line. 本実施形態に係る転写装置の構成を模式的に示す説明図である。It is explanatory drawing which shows typically the structure of the transfer apparatus which concerns on this embodiment. 本実施形態に係る転写装置における転写工程を模式的に示す説明図である。It is explanatory drawing which shows typically the transfer process in the transfer apparatus which concerns on this embodiment. 本実施形態に係る転写装置における離型工程を模式的に示す説明図である。It is explanatory drawing which shows typically the mold release process in the transfer apparatus which concerns on this embodiment.
　以下、図１～図６を参照して、本発明に係るバルク体に形成される、文字又は図形を詳細に説明する。本発明ではバルク体に文字又は図形が形成されており、更に文字又は図形もバルク体から形成されている。その文字又は図形の少なくとも一部に、偽造防止対策の構造体として、格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上が形成されている。図１は、偽造防止対策の１つの例として、バルク体に形成された文字又は図形の一部である平面部に、格子が面方向に亘って形成されている、アルファベットのＩを図示している。なお、図１～図６に示すＸＹＺ直交座標系は、各図で相互に対応しているものとする。また、図１～図６では、文字又は図形の下地のバルク体は、図示を省略している。 Hereinafter, with reference to FIG. 1 to FIG. 6, characters or figures formed in the bulk body according to the present invention will be described in detail. In the present invention, characters or figures are formed on the bulk body, and the characters or figures are also formed from the bulk body. One or more of a lattice, a slit, a protrusion, a hole, or a latent image is formed as at least a part of the character or figure as a structure for preventing forgery. FIG. 1 shows an alphabet I as an example of anti-counterfeiting measures, in which a lattice is formed in a plane direction on a plane portion that is a part of a character or figure formed in a bulk body. Yes. Note that the XYZ orthogonal coordinate systems shown in FIGS. 1 to 6 correspond to each other in each figure. Further, in FIGS. 1 to 6, the bulk body of the base of characters or figures is not shown.
　文字又は図形１の大きさは、例えば高さ方向の大きさＨは１ｍｍ以上に設定され、目視により判別可能な程度に設定される。大きさＨの上限は任意に設定可能であり、約５ｍｍ前後に設定すれば良い。また、文字又は図形のＺ軸方向における厚みＴも任意に設定可能であり、約５ｍｍ未満で設定すれば良い。 The size of the character or figure 1 is set such that, for example, the size H in the height direction is set to 1 mm or more and can be discriminated visually. The upper limit of the size H can be set arbitrarily and may be set to about 5 mm. Moreover, the thickness T in the Z-axis direction of the character or figure can be arbitrarily set, and may be set to be less than about 5 mm.
　文字又は図形としては、図１に示すようなアルファベット以外にも、ひらがな、カタカナ、漢字、数字、漢数字、記号、符号等のあらゆる文字や、ブランドロゴを含む。また図形としては、円や三角形又は四角形といった基本的な図形や、より複雑な幾何学模様、又はブランドや製造者を示すトレードマークも含む。 1) Characters and graphics include all characters such as hiragana, katakana, kanji, numbers, kanji, symbols, symbols, and brand logos in addition to the alphabet shown in FIG. In addition, the figure includes a basic figure such as a circle, a triangle, or a rectangle, a more complicated geometric pattern, or a trademark indicating a brand or a manufacturer.
　前記偽造防止対策の構造体の一例として挙げた格子とは、図１及び図２に示すように、Ｘ軸－Ｙ軸平面において一軸方向（図１及び図２ではＹ軸方向）にのみ形状が周期的に等間隔に変化する、互いに平行な凹凸から成る構造物を指すものとする。凹凸の断面形状は適宜形成可能であり、図２（b）に示すような波形だけでなく、図３（a）に示すＶ字状の三角波状や、図３（b）に示す矩形状に成形しても良い。 As shown in FIGS. 1 and 2, the lattice mentioned as an example of the anti-counterfeiting structure has a shape only in one axis direction (Y-axis direction in FIGS. 1 and 2) in the X-axis-Y-axis plane. It shall refer to the structure which consists of unevenness | corrugation mutually parallel which changes periodically at equal intervals. The cross-sectional shape of the projections and depressions can be appropriately formed, and not only the waveform as shown in FIG. 2 (b) but also the V-shaped triangular wave shape shown in FIG. 3 (a) or the rectangular shape shown in FIG. 3 (b). It may be molded.
　また潜像とは、文字又は図形を目線に対し斜めに配置することで判別可能となる像のことであり、潜像加工により加工される。更に、潜像加工とは、文字又は図形を目線に対し斜めに配置すると判別可能な像加工と定義する。 Also, the latent image is an image that can be discriminated by arranging characters or figures obliquely with respect to the line of sight, and is processed by latent image processing. Furthermore, latent image processing is defined as image processing that can be discriminated when a character or a figure is arranged obliquely with respect to the line of sight.
　このような文字や図形は、腕時計用の外装部品かムーブメント、装身具、タグ、又はファスナー等の製品そのもののバルク体部分に、押圧加工や刻印等で形成される。製品そのものに備えられるバルク体に形成される文字や図形に直接、偽造防止対策の構造体を形成することで、真性品そのものに偽造防止対策が直接施される。従って、前記偽造防止ラベルのように真贋を見分ける物を別途、製品に後付けしないので、製品そのもので真贋を判定することが可能となるため、偽造防止ラベルの貼り替えによる虚偽が防止され、信頼性の高い偽造防止効果を製品に持たせることが可能となる。 Such characters and figures are formed by pressing or engraving on the bulk parts of the watch itself, such as exterior parts for watches or movements, accessories, tags, or fasteners. By forming the anti-counterfeiting structure directly on the characters and figures formed in the bulk body provided in the product itself, the anti-counterfeiting measure is directly applied to the genuine product itself. Therefore, since a product that distinguishes authenticity, such as the anti-counterfeit label, is not attached to the product separately, it is possible to determine the authenticity of the product itself. It is possible to give the product a high anti-counterfeiting effect.
　前記偽造防止対策の構造体の、それぞれの単一構造の大きさは、10μｍ未満が好ましい。本発明では、人の目が構造体として認識可能な限度を10μｍ未満と定義する。従って、単一構造の大きさが10μｍ以上の場合は、本発明では人の目が構造体として認識可能としている。 The size of each single structure of the structure for preventing forgery is preferably less than 10 μm. In the present invention, the limit that the human eye can recognize as a structure is defined as less than 10 μm. Therefore, when the size of the single structure is 10 μm or more, the human eye can recognize the structure as a structure in the present invention.
　なお各偽造防止対策の構造体のそれぞれの単一構造とは、格子の場合は一対の凹凸である。各凹凸の深さ、及び頂部又は溝の間隔ｄを、10μｍ未満の範囲内に設定する。図１では、理解の容易さを優先するため、波形の凹凸それぞれの頂部及び底部を実線で示している。更に図１及び図２では、見易さの確保の為に、頂部又は溝の間隔ｄも拡大して図示している。 In addition, in the case of a lattice, each single structure of each structure for preventing forgery is a pair of irregularities. The depth of each unevenness and the distance d between the tops or grooves are set within a range of less than 10 μm. In FIG. 1, in order to give priority to ease of understanding, the top and bottom of each of the corrugated irregularities are indicated by solid lines. Furthermore, in FIG.1 and FIG.2, the space | interval d of a top part or a groove | channel is expanded and shown in order to ensure visibility.
　また、スリットの場合は各切れ目を単一構造と設定し、各切れ目の大きさ及び切れ目の間隔を10μｍ未満の範囲内に設定する。また、突起の場合は各突起を単一構造とし、各突起の大きさ及び各突起の間隔を10μｍ未満の範囲内に設定する。また、穴の場合は各穴を単一構造とし、各穴の直径及び各穴の間隔を10μｍ未満の範囲内に設定する。また潜像の場合は各潜像を単一構造とし、各潜像の大きさ及び各潜像の間隔を10μｍ未満の範囲内に設定する。 In the case of slits, each cut is set as a single structure, and the size of each cut and the interval between the cuts are set within a range of less than 10 μm. In the case of protrusions, each protrusion has a single structure, and the size of each protrusion and the interval between the protrusions are set within a range of less than 10 μm. In the case of holes, each hole has a single structure, and the diameter of each hole and the interval between the holes are set within a range of less than 10 μm. In the case of a latent image, each latent image has a single structure, and the size of each latent image and the interval between the latent images are set within a range of less than 10 μm.
　このように単一構造の大きさを10μｍ未満と設定することにより、目視により一見しただけでの偽造防止対策の構造体の発見を、困難なものとすることが出来る。更に、本発明に係る、文字や図形を形成したバルク体を真性品に備えることにより、従来の偽造防止ラベルのような真贋を見分ける物を、別途後付けする必要も無い。従って、真性品の何処に偽造防止対策を施しているのか、又は、何を以て偽造防止対策としているのか自体を判別困難にすることが可能となり、模倣品の製造業者が容易に偽造防止対策自体を模倣できないようにさせることが出来る。よって一層、真性品の偽造防止を高めることが可能となる。 Thus, by setting the size of a single structure to be less than 10 μm, it is possible to make it difficult to find a structure for preventing counterfeiting at first glance. Furthermore, by providing the genuine product with the bulk body in which characters and figures are formed according to the present invention, it is not necessary to separately attach an object for identifying authenticity such as a conventional anti-counterfeit label. Therefore, it is possible to make it difficult to determine where the genuine product is taking anti-counterfeit measures or what is the anti-counterfeit measure itself, and the manufacturer of counterfeit products can easily take the anti-counterfeit measure itself. It can be made not to imitate. Therefore, it becomes possible to further increase the prevention of forgery of genuine products.
　前記偽造防止対策の構造体のうち格子だけが、一軸方向にのみ形状が周期的に等間隔に変化する構造体であり、もう一方の軸方向（図１及び図２ではＸ軸方向）に亘って構造変化が無い。従って、その他の構造体のように、二軸方向（Ｘ軸及びＹ軸方向）に亘って周期的に構造を変化させる必要が無く、更に、スリットや穴のように穴抜き加工を行う必要も無いので、格子はその他の構造体に比べて構造をより簡潔にすることが出来る。よって格子は最も製造し易く、10μｍ未満の単一構造の形成を行う上で最も好ましい構造体である。 Of the anti-counterfeiting structure, only the lattice is a structure whose shape periodically changes at equal intervals only in one axial direction, and extends in the other axial direction (X-axis direction in FIGS. 1 and 2). There is no structural change. Therefore, unlike other structures, there is no need to periodically change the structure in the biaxial direction (X-axis and Y-axis directions), and it is also necessary to perform punching processing such as slits and holes. Since there is no lattice, the structure can be more concise than other structures. Therefore, the lattice is the easiest to manufacture and is the most preferred structure for forming a single structure of less than 10 μm.
　その上で、各凹凸の深さ及び間隔ｄを10μｍ未満の範囲内に設定するので、格子の偽造自体を困難なものとすることが出来、偽造の困難さとの点でも真性品の偽造防止を高めることが可能となる。なお各溝の深さｈは、数百ｎｍ～数μｍ程度に設定すれば良い。 In addition, since the depth and interval d of each unevenness are set within a range of less than 10 μm, the counterfeiting of the grating itself can be made difficult, and the counterfeiting of the genuine product can be prevented in terms of the difficulty of counterfeiting. It becomes possible to raise. The depth h of each groove may be set to about several hundred nm to several μm.
　文字又は図形１に形成される前記偽造防止対策の構造体や、文字又は図形が形成されるバルク体、及び文字又は図形は、金属ガラスから形成される。或いは、少なくとも前記偽造防止対策の構造体のみ金属ガラスで形成しても良い。本発明に係る金属ガラスは、ガラス質金属単相を含む金属ガラス、昇温速度0.67Ｋ／ｓで30Ｋ以上の過冷却液体温度域を有するガラス質金属単相を含む金属ガラス、100ｎｍ以下の粒径を有する結晶を含む金属ガラス、或いはガラス質金属組織を体積率で50％以上を含む金属ガラスの、何れかの金属ガラスから選ばれる。 The anti-counterfeiting structure formed on the character or figure 1, the bulk body on which the character or figure is formed, and the character or figure are formed from metal glass. Alternatively, at least the structure for preventing forgery may be formed of metal glass. The metallic glass according to the present invention includes a metallic glass including a vitreous metallic single phase, a metallic glass including a vitreous metallic single phase having a supercooled liquid temperature range of 30 K or more at a heating rate of 0.67 K / s, and a grain of 100 nm or less. It is selected from any one of metallic glasses containing crystals having a diameter or metallic glasses containing a glassy metallic structure containing 50% or more by volume.
　ガラス質金属単相、或いは100ｎｍ以下の粒径を有する結晶を含む金属ガラスは、表面平滑性を呈する組織構造を持つ。このことから粒子欠損が無いため、表面が平滑な構造体を作製することが可能となる。更に、製造ばらつきをより確実に取り除くことが出来る。従って、構造体を別材料で模倣製造したものと比較し、格子表面の転写性や格子の各単一構造の転写性に優れ、製造ばらつきが少なく精度の高い形状の構造体が実現可能となるので、より、模倣品との違いを即座に見分けることが可能となる。 A metallic glass including a glassy metal single phase or a crystal having a particle size of 100 nm or less has a texture structure exhibiting surface smoothness. Accordingly, since there is no particle defect, a structure with a smooth surface can be produced. Furthermore, manufacturing variations can be more reliably removed. Therefore, compared to a structure that is imitated and manufactured using a different material, it is possible to realize a highly accurate structure with less manufacturing variation and superior transferability of the grating surface and transferability of each single structure of the grating. Therefore, it becomes possible to immediately distinguish the difference from the counterfeit product.
　なお結晶の粒径が100ｎｍを超えると、構造体の表面粗度（表面平滑性）に悪影響を与えてしまい、前述の効果が得られにくくなる。よって、金属ガラス組織のマトリックス中に混在する結晶の粒径は100ｎｍ以下であることが望ましい。 If the crystal grain size exceeds 100 nm, the surface roughness (surface smoothness) of the structure is adversely affected, making it difficult to obtain the aforementioned effects. Therefore, it is desirable that the grain size of the crystals mixed in the matrix of the metallic glass structure is 100 nm or less.
　また、昇温速度0.67Ｋ／ｓで30Ｋ以上の過冷却温度領域を有するガラス質金属単相を含む金属ガラスは、固体ガラスとしての安定性が高い。従って、粘性流動による射出成形、押出し成形、加圧転造成形、転写等の安価で形状再現性の高い成形加工を用いることで、構造体の各々の単一構造を、極めて容易に高精度で作製することが可能となる。更に、製造ばらつきをより確実に取り除くことが出来る。よって、構造体を別材料で模倣製造したとしても、各単一構造の精度や製造ばらつきを比較することにより、模倣品との違いを即座に見分けることが可能となる。 Further, a metal glass including a vitreous metal single phase having a supercooling temperature region of 30 K or more at a heating rate of 0.67 K / s has high stability as a solid glass. Therefore, by using low-cost and highly reproducible molding processes such as injection molding by extrusion, extrusion molding, pressure rolling molding, transfer, etc., each single structure of the structure can be made very easily and with high accuracy. It can be produced. Furthermore, manufacturing variations can be more reliably removed. Therefore, even if the structure is manufactured by imitation using a different material, it is possible to immediately distinguish the difference from the counterfeit product by comparing the accuracy and manufacturing variation of each single structure.
　また、ガラス質金属組織を体積率で50％以上含む金属ガラスで構造体を製造することにより、高い寸法精度と高耐久性が得られる。従って、構造体の各々の単一構造を、高精度に作製することが可能になると共に、真性品に直接形成する構造体に高耐久性を付与することも出来る。よって、構造体を別材料で模倣製造したとしても、各単一構造の精度や製造ばらつき及び耐久性を比較することにより、模倣品との違いを見分けることが可能となる。 Moreover, high dimensional accuracy and high durability can be obtained by manufacturing a structure with a metallic glass containing a glassy metallic structure by 50% or more by volume. Therefore, each single structure of the structure can be manufactured with high precision, and high durability can be imparted to the structure directly formed on the intrinsic product. Therefore, even if the structure is manufactured by imitation using a different material, it is possible to distinguish the difference from the counterfeit product by comparing the accuracy, manufacturing variation, and durability of each single structure.
　なお、ガラス質金属組織の体積率が50％未満では、構造体表面の平滑性が十分に得られなくなるため、金属ガラス中のガラス質金属組織の体積率は50％以上が好ましい。 It should be noted that if the volume fraction of the vitreous metal structure is less than 50%, the smoothness of the surface of the structure cannot be obtained sufficiently. Therefore, the volume fraction of the vitreous metal structure in the metal glass is preferably 50% or more.
　構造体が格子の場合、間隔ｄを527ｎｍ以上1217ｎｍ以下の範囲内に設定することが更に望ましい。間隔ｄを527ｎｍ以上1217ｎｍ以下の範囲内に設定することにより、その格子から回折される１次回折光の波長を、360ｎｍ以上830ｎｍ以下に設定することが可能となる。なお、本発明では360ｎｍ以上830ｎｍ以下の光の波長を、人間の可視光領域の波長と定義する。 When the structure is a lattice, it is more desirable to set the distance d within the range of 527 nm to 1217 nm. By setting the distance d within the range of 527 nm to 1217 nm, the wavelength of the first-order diffracted light diffracted from the grating can be set to 360 nm or more and 830 nm or less. In the present invention, the wavelength of light between 360 nm and 830 nm is defined as the wavelength of the human visible light region.
　間隔ｄを527ｎｍ以上1217ｎｍ以下の範囲内に設定することにより、格子に光を入射させた場合、可視光領域の少なくとも１つ又は複数の波長を有する１次回折光が回折されて、反射する。それらの回折反射光の有無を肉眼又はフォトダイオード等の受光素子、CCDカメラ等で判別することにより、構造体が施された文字又は図形であるか否かを容易に判別可能となる。よって前記のように、偽造業者に対しては構造体自体の発見を困難にすると共に、文字又は図形が回折特性を有することで、真性品の製造業者等による真贋判定の作業は容易化することが可能となる。従って、真贋判定の容易化と偽造防止と云う、相反する２つの要求を両立させることが出来る。 When the interval d is set within the range of 527 nm to 1217 nm, when light is incident on the grating, the first-order diffracted light having at least one or more wavelengths in the visible light region is diffracted and reflected. By determining the presence or absence of such diffracted reflected light with the naked eye or a light-receiving element such as a photodiode, a CCD camera, or the like, it is possible to easily determine whether the structure is a character or a figure. Therefore, as described above, it is difficult for a counterfeiter to find the structure itself, and the character or figure has diffraction characteristics, so that the authenticity manufacturer's work of authenticity determination can be facilitated. Is possible. Therefore, it is possible to satisfy both conflicting demands of facilitating authenticity determination and preventing forgery.
なお、格子の回折条件を表す式は、以下の数１のように定義する。
Figure JPOXMLDOC01-appb-M000001
  
ｄは前記間隔ｄである。ｍは回折光の次数を表し、１次回折光ではｍは１となる。また、θは格子に入射させる光に対する回折光の回折角度であり、本発明では43°に固定する。更にλが、格子から回折される回折光の波長である。 In addition, the formula showing the diffraction conditions of a grating | lattice is defined like the following numerical formula 1.
Figure JPOXMLDOC01-appb-M000001
d is the interval d. m represents the order of the diffracted light, and m is 1 for the first-order diffracted light. Θ is the diffraction angle of the diffracted light with respect to the light incident on the grating, and is fixed at 43 ° in the present invention. Further, λ is the wavelength of diffracted light diffracted from the grating.
　また図４に示すように、例えば文字又は図形２をアルファベットのＴ等に設定し、２つ以上の異なる間隔d1とd2を有するように各々の溝（格子）を形成し、間隔d1又はd2を1020ｎｍ、784ｎｍ、又は659ｎｍの何れかの、少なくとも２つ以上の異なる間隔に設定しても良い。間隔d1又はd2をこのような値に設定することにより、間隔d1又はd2が1020ｎｍの場合は１次回折光の波長λは696ｎｍとなり、784ｎｍの場合は波長λは535ｎｍとなり、659ｎｍの場合は波長λは449ｎｍとなる。従って、三原色である赤・緑・青（RGB）の何れかの波長を有する二色以上の光を鮮明に回折させることが可能となり、真贋判定の作業をより容易化することが出来る。 Also, as shown in FIG. 4, for example, the letter or figure 2 is set to the alphabet T, etc., and each groove (grating) is formed so as to have two or more different intervals d1 and d2, and the interval d1 or d2 is set to At least two or more different intervals of 1020 nm, 784 nm, or 659 nm may be set. By setting the distance d1 or d2 to such a value, the wavelength λ of the first-order diffracted light is 696 nm when the distance d1 or d2 is 1020 nm, the wavelength λ is 535 nm when it is 784 nm, and the wavelength λ when it is 659 nm. Becomes 449 nm. Therefore, it becomes possible to clearly diffract light of two or more colors having any one of the three primary colors of red, green, and blue (RGB), and the work of authenticity determination can be further facilitated.
　また図５に示すように、文字又は図形３の格子の間隔ｄを一定値に固定し、格子が２つ以上の異なる溝角度θ１及びθ2を有するように、文字又は図形３を形成しても良い。図５（a）では格子を２つの箇所に分割しており、同図（b）は溝角度θ1が30°の箇所、同図（c）は溝角度θ2が45°の箇所としている。同図（b）は同図（a）の円Ｃ内の拡大図であり、同図（c）は同図（a）の円Ｄ内の拡大図である。また、溝角度θ1及びθ2は、それぞれＸ軸方向に対する角度とする。このように、格子を２つ以上の異なる溝角度を有するように形成することで、偽造対策自体の模倣を更に困難にすることが出来るため、より一層、真性品の偽造防止を高めることが可能となる。なお、溝角度θ１又はθ2で形成される各々の格子の間隔ｄを、互いに異なるように設定しても良い。 Also, as shown in FIG. 5, the character or graphic 3 may be formed so that the lattice interval d of the character or graphic 3 is fixed to a constant value and the lattice has two or more different groove angles θ1 and θ2. good. In FIG. 5 (a), the lattice is divided into two locations, FIG. 5 (b) shows a location where the groove angle θ1 is 30 °, and FIG. 5 (c) shows a location where the groove angle θ2 is 45 °. FIG. 2B is an enlarged view in a circle C in FIG. 1A, and FIG. 2C is an enlarged view in a circle D in FIG. 1A. The groove angles θ1 and θ2 are angles with respect to the X-axis direction, respectively. In this way, by forming the lattice so as to have two or more different groove angles, imitation of counterfeiting measures itself can be made more difficult, so it is possible to further increase the prevention of forgery of genuine products. It becomes. Note that the interval d between the respective gratings formed at the groove angle θ1 or θ2 may be set to be different from each other.
　更に、金属ガラスはPtを主成分とすることが好ましい。その理由として、文字や図形の製造が容易となり、且つ転写性に優れるため、10μｍ未満の単一構造を転写で実現可能となるためである。製造の容易化及び高転写性を有する理由は、Ptを主成分とすることで昇温速度0.67Ｋ／ｓで30Ｋ以上の過冷却液体温度域を有し、且つ、圧縮方向に対して非弾性領域が現れ、非弾性領域の開始点から破断に至るまでに少なくとも0.5％以上の塑性伸びを示すと共に、降伏応力（もしくは耐力）が少なくとも1000ＭＰａ以上を示すためである。なお、Pt 系の金属ガラスの組成（at%）としては、例えばPt 48.75、 Pd 9.75、Cu 19.5、P 22（Pt48.75Pd9.75Cu19.5P22合金）が挙げられる。 Further, the metal glass preferably contains Pt as a main component. This is because the manufacture of characters and figures is easy and the transferability is excellent, so that a single structure of less than 10 μm can be realized by transfer. The reason for its ease of production and high transferability is that it has Pt as the main component, has a supercooled liquid temperature range of 30K or higher at a temperature increase rate of 0.67 K / s, and is inelastic with respect to the compression direction. This is because the region appears and exhibits a plastic elongation of at least 0.5% from the start point of the inelastic region to the fracture, and the yield stress (or proof stress) is at least 1000 MPa. Examples of the composition (at%) of the Pt-based metallic glass include Pt 48.75, Pd 9.75, Cu 19.5, and P 22 (Pt 48.75 Pd 9.75 Cu 19.5 P 22 alloy).
　本実施形態に係るバルク体に形成される文字又は図形は種々変更可能であり、図１～図５では平面方向に格子が形成されている文字又は図形１～３を示している。しかし、図６に示すように格子５の少なくとも一部を、文字又は図形４の厚み方向（Ｚ軸方向）の少なくとも一部に形成しても良い。図６では一例として、波形の格子５を、厚み方向において文字又は図形４の底部に形成した例を示す。なお、図６（a）は厚み方向の底部に格子５が形成された、アルファベットＴ形の文字又は図形４を模式的に示すと共に、図６（b）では格子５の見易さの確保という点から、図６（a）に示す格子５のみを実線で示し、格子５以外の箇所を破線で示している。厚み方向（Ｚ軸方向）における格子５の高さｔは、30μｍ以下に設定すれば良い。また、格子５の間隔ｄは10μｍ未満の範囲内に設定する。 The characters or graphics formed on the bulk body according to the present embodiment can be variously changed, and FIGS. 1 to 5 show the characters or graphics 1 to 3 in which a lattice is formed in the plane direction. However, as shown in FIG. 6, at least a part of the lattice 5 may be formed in at least a part of the thickness direction (Z-axis direction) of the character or figure 4. FIG. 6 shows an example in which a corrugated lattice 5 is formed at the bottom of a character or figure 4 in the thickness direction. 6A schematically shows an alphabet T-shaped character or figure 4 in which a lattice 5 is formed at the bottom in the thickness direction, and FIG. 6B shows ensuring the visibility of the lattice 5. From the point, only the lattice 5 shown in FIG. 6A is indicated by a solid line, and portions other than the lattice 5 are indicated by a broken line. The height t of the grating 5 in the thickness direction (Z-axis direction) may be set to 30 μm or less. Further, the interval d of the grating 5 is set within a range of less than 10 μm.
　このように、格子５を文字又は図形４の厚み方向に形成することにより、文字又は図形４を平面方向から見たとしても、文字又は図形４の平面には格子は無いため、目視により一見しただけでは格子５自体を発見することは不可能である。無論、文字や図形４を形成したバルク体を真性品に備えることにより、真贋を見分ける物を、別途後付けする必要も無い。従って、真性品の何処に偽造防止対策を施しているのか、又は、何を以て偽造防止対策としているのか自体を判別困難にすることがより一層可能となり、偽造防止対策自体の模倣をできないようにさせ、より一層、真性品の偽造防止を高めることが可能となる。 Thus, by forming the lattice 5 in the thickness direction of the character or figure 4, even if the character or figure 4 is viewed from the plane direction, there is no lattice in the plane of the character or figure 4, so that it can be seen at a glance. It is impossible to find the lattice 5 itself by itself. Of course, it is not necessary to separately attach an object for recognizing authenticity by providing the genuine product with a bulk body in which characters and figures 4 are formed. Therefore, it is possible to make it more difficult to determine where the genuine product is taking anti-counterfeit measures or what is the anti-counterfeit measure itself, and prevent counterfeit prevention measures themselves from being imitated. Furthermore, it becomes possible to further improve the prevention of forgery of genuine products.
　更に格子５に光を入射させた場合、可視光領域の少なくとも１つ又は複数の波長を有する１次回折光が格子５から回折されて、文字又は図形４の側面から反射する。それらの回折反射光の有無を肉眼又はフォトダイオード等の受光素子やCCDカメラ等で判別することにより、構造体が施された文字又は図形であるか否かを容易に判別可能となる。よって、偽造業者に対しては構造体自体の発見を不可能にすると共に、文字又は図形が回折特性を有することで、真性品の製造業者等による真贋判定の作業は容易化することが可能となる。従って、真贋判定の容易化と偽造防止と云う、相反する２つの要求を両立させることが出来る。 Further, when light is incident on the grating 5, the first-order diffracted light having at least one or more wavelengths in the visible light region is diffracted from the grating 5 and reflected from the side surface of the character or figure 4. By determining the presence or absence of such diffracted and reflected light with the naked eye or a light receiving element such as a photodiode, a CCD camera, or the like, it is possible to easily determine whether the structure is a character or a figure. Therefore, it is impossible for the counterfeiter to discover the structure itself, and the character or figure has diffraction characteristics, so that it is possible to facilitate the work of authenticity determination by an authentic product manufacturer. Become. Therefore, it is possible to satisfy both conflicting demands of facilitating authenticity determination and preventing forgery.
　なお、格子５の形成箇所は底部に限定されず、文字又は図形４の厚みの如何なる箇所に形成可能である。また、図６では文字又は図形４の一部の側面の底部のみに格子５を形成しているが、底部の半周又は全周に亘って格子を形成しても良い。 In addition, the formation location of the grating | lattice 5 is not limited to a bottom part, It can form in any location of the thickness of the character or the figure 4. FIG. In FIG. 6, the lattice 5 is formed only on the bottom of a part of the side surface of the character or graphic 4. However, the lattice may be formed over the entire circumference of the bottom.
　これら文字又は図形１～４を、腕時計用の外装部品（文字盤や時計バンドのバックル等も含む）又はムーブメントの一部部品、或いはアクセサリー類の装身具（リング、ネックレス、イヤリング、ブレスレット等）、タグやファスナーのバルク体部分に、押圧加工や刻印等で形成する。真性品そのものに偽造防止対策の構造体を形成したバルク体を備えることにより、製品そのもので真贋を判定することが可能となり、偽造防止ラベルの貼り替えによる虚偽が防止され、信頼性の高い偽造防止効果を製品そのものに持たせることが可能となる。 These letters or figures 1 to 4 are used for wristwatch exterior parts (including dials and watch band buckles) or movement parts, accessories accessories (rings, necklaces, earrings, bracelets, etc.), tags It is formed by pressing or engraving on the bulk body of the fastener. By providing a bulk product with a structure for preventing counterfeiting in the genuine product itself, it is possible to determine the authenticity of the product itself, preventing forgery caused by the replacement of the anti-counterfeit label, and preventing forgery with high reliability. It is possible to give effects to the product itself.
　次に図７～図９を参照して、本発明に係るバルク体の製造方法を詳細に説明する。なお前述の説明と重複する説明は省略又は簡略化して記載する。まず、本発明の製造方法を実施するに当たっては、文字又は図形を被押圧材とし、更にその被押圧材に所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上の形状を転写する転写用の金型と、その転写を行うための転写装置が必要となる。 Next, with reference to FIGS. 7 to 9, the method for producing a bulk body according to the present invention will be described in detail. Note that descriptions overlapping with the above description are omitted or simplified. First, in carrying out the manufacturing method of the present invention, a character or a figure is used as a pressed material, and the pressed material is any one or more of a predetermined lattice, slit, protrusion, hole, or latent image. A transfer mold for transferring the shape and a transfer device for performing the transfer are required.
　転写用の金型は、所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上の形状が形成された金型である。前記の通り、格子、スリット、突起、穴、又は潜像の中でも格子が最も好ましいため、以下に格子を例に取り更に詳細に説明する。 The transfer mold is a mold in which one or more shapes of a predetermined lattice, slit, protrusion, hole, or latent image are formed. As described above, the grating is the most preferable among the grating, the slit, the protrusion, the hole, or the latent image.
　金型には、得ようとする構造体の反転形状が形成される。前記のように格子は、図２に示すような波形の凹凸形状や、Ｖ字状の三角波形状（図３（a））又は矩形の凹凸形状（図３（b））が一定の間隔ｄ、又は２つ以上の異なる間隔d1、d2で多数形成されて成る。従って、金型もそれに対応した凹凸形状を備える必要がある。図７に一例として、図２の波形に対応した凹凸形状を有する転写用の金型９を備えた転写装置６を示す。 In the mold, the inverted shape of the structure to be obtained is formed. As described above, the grating has a corrugated uneven shape as shown in FIG. 2, a V-shaped triangular wave shape (FIG. 3A), or a rectangular uneven shape (FIG. 3B) with a constant interval d, Alternatively, a large number are formed at two or more different intervals d1 and d2. Therefore, the mold also needs to have a corresponding uneven shape. As an example, FIG. 7 shows a transfer device 6 including a transfer mold 9 having a concavo-convex shape corresponding to the waveform of FIG.
　文字又は図形に形成する格子に回折特性を持たせる場合、金型９の凹凸形状は、得ようとする１次回折光の波長や回折角度などの回折条件に基づいて設計、作製される。 When the grating formed on the character or figure has diffraction characteristics, the uneven shape of the mold 9 is designed and manufactured based on the diffraction conditions such as the wavelength and diffraction angle of the first-order diffracted light to be obtained.
　この金型９をシリコン等で作製し、前記凹凸形状をシリコンの110面異方性エッチングにより形成する。シリコンの110面異方性エッチングにより形成した凹凸形状はその精度が高くしかもその面が鏡面になるという、格子の製造にとって極めて有利な特徴を有する。 The mold 9 is made of silicon or the like, and the uneven shape is formed by 110-plane anisotropic etching of silicon. The concavo-convex shape formed by the 110-plane anisotropic etching of silicon has a very advantageous feature for the manufacture of a grating, that is, its accuracy is high and its surface becomes a mirror surface.
　バルク体に文字又は図形７を形成し、被押圧材とする。更に、文字又は図形が形成されるバルク体の材料には、前述のような金属ガラスを用いる。従って、文字又は図形７は金属ガラス製であることが好ましく、少なくとも格子が形成される箇所は金属ガラス製とする。 文字 Characters or figures 7 are formed on the bulk body to form a pressed material. Furthermore, the metallic glass as described above is used as a bulk material on which characters or figures are formed. Therefore, it is preferable that the character or figure 7 is made of metallic glass, and at least a portion where a lattice is formed is made of metallic glass.
　転写装置６は、熱間プレス及びプレス後の冷却が可能な装置とし、上型８と下型10を有する。この上型８に金型９を取り付け、下型10に被押圧材である文字又は図形７を載置し、これらの上下型８、10を押圧して、金型９の転写面形状（所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上の形状）を、文字又は図形７に転写する。 The transfer device 6 is a device capable of hot pressing and cooling after pressing, and has an upper die 8 and a lower die 10. A mold 9 is attached to the upper mold 8, a character or figure 7 as a pressed material is placed on the lower mold 10, the upper and lower molds 8 and 10 are pressed, and the transfer surface shape of the mold 9 (predetermined) Or any one of two or more shapes of a lattice, a slit, a protrusion, a hole, or a latent image) is transferred to a character or graphic 7.
　次に、バルク体の製造方法を、図７～図９に沿って更に詳細に説明する。まず図７に示すように、金型９の転写面が下型10側を向くように金型９を上型８に取り付けると共に、被押圧材である文字又は図形７を下型10に置く。転写が終了して、転写装置６から文字又は図形７を取り出した際に、文字又は図形の大きさＨ及び厚みＴが所望のサイズとなっているように、構造体の加工前に予め、押圧加工や刻印等で調整しておくのが好ましい。 Next, the method for manufacturing the bulk body will be described in more detail with reference to FIGS. First, as shown in FIG. 7, the mold 9 is attached to the upper mold 8 so that the transfer surface of the mold 9 faces the lower mold 10, and the character or figure 7 as a pressed material is placed on the lower mold 10. When the character or figure 7 is taken out from the transfer device 6 after the transfer is completed, it is pressed in advance before processing the structure so that the size H and thickness T of the character or figure are the desired size. It is preferable to adjust by processing or engraving.
　文字又は図形に格子を転写する場合、金型９の転写面に形成される格子の間隔ｄは、前記の通り10μｍ未満の範囲内に設定されることが好ましい。また、その他の構造体を転写する場合、それぞれの構造体の形状に形成される金型の、転写面形状における単一構造の大きさは、10μｍ未満に設定されることが好ましい。 When transferring a lattice to a character or a figure, the interval d between the lattices formed on the transfer surface of the mold 9 is preferably set within a range of less than 10 μm as described above. When transferring other structures, the size of the single structure in the shape of the transfer surface of the mold formed in each structure is preferably set to be less than 10 μm.
　次に、文字又は図形７及び金型９を加熱する。文字又は図形７の少なくとも一部を金属ガラスで形成している場合は、少なくとも金属ガラスで形成されている文字又は図形７の部分を加熱する。文字又は図形７の加熱温度は、金属ガラスのガラス遷移温度以上で且つ結晶化温度以下の温度に設定する（加熱工程）。 Next, the character or figure 7 and the mold 9 are heated. When at least a part of the character or figure 7 is formed of metal glass, the part of the character or figure 7 formed of at least metal glass is heated. The heating temperature of the character or figure 7 is set to a temperature not lower than the glass transition temperature of the metallic glass and not higher than the crystallization temperature (heating step).
　非晶質相を主相とする金属ガラスの特性が損なわれる最も大きな要因としては、非晶質と見なされる相の結晶化が挙げられる。結晶化が開始されると共に、非晶質相（準安定相）から結晶相（安定相）への移行に伴う発熱が生じるが、このときの結晶化の駆動速度は極めて速く、瞬時に非晶質と見なされる相が消失する。そのため、文字又は図形７の加熱温度は、金属ガラスの結晶化温度以下に設定する必要がある。 The biggest factor that impairs the properties of metallic glass whose main phase is an amorphous phase is crystallization of a phase that is regarded as amorphous. As crystallization starts, heat is generated due to the transition from the amorphous phase (metastable phase) to the crystalline phase (stable phase). At this time, the driving speed of crystallization is extremely fast, and the amorphous state is instantaneously generated. The phase considered quality disappears. Therefore, it is necessary to set the heating temperature of the character or figure 7 to be equal to or lower than the crystallization temperature of the metal glass.
　また金属ガラスは、安定な過冷却液体温度域を有し、この過冷却液体温度域で完全ニュートン粘性流動を呈する非晶質合金である。過冷却液体温度域とは、結晶化温度Ｔxとガラス遷移温度Ｔgとの差分ΔＴx（＝Ｔx－Ｔg）である。金属ガラスは、過冷却液体温度域においては低応力での粘性流動加工が可能であり、優れた微細成形特性（微細形状転写性）を有する。従って、過冷却液体温度域で金属ガラスを金型に押圧する転写成形によって、微細な構造体を高精度で作製することが出来る。なおガラス遷移温度は、金属ガラスの種類によって相違する。例えば、Pt系のPt48.75Pd9.75Cu19.5P22合金は、ガラス遷移温度Ｔg＝502.3Ｋ、結晶化温度Ｔx＝587.7Ｋ、過冷却液体温度域ΔＴx＝85.4Ｋである。 Metallic glass is an amorphous alloy that has a stable supercooled liquid temperature range and exhibits a complete Newtonian viscous flow in this supercooled liquid temperature range. The supercooled liquid temperature range is a difference ΔTx (= Tx−Tg) between the crystallization temperature Tx and the glass transition temperature Tg. Metallic glass is capable of viscous flow processing at low stress in the supercooled liquid temperature range, and has excellent fine forming characteristics (fine shape transferability). Therefore, a fine structure can be produced with high accuracy by transfer molding in which the metallic glass is pressed against the mold in the supercooled liquid temperature range. The glass transition temperature differs depending on the type of metal glass. For example, a Pt-based Pt 48.75 Pd 9.75 Cu 19.5 P 22 alloy has a glass transition temperature Tg = 502.3K, a crystallization temperature Tx = 587.7K, and a supercooled liquid temperature range ΔTx = 85.4K.
　なお、文字又は図形７及び金型９の加熱方法は特に限定されず、例えば上下型８、10を赤外線ヒータ等で加熱することが出来る。また、酸化し易い金属ガラスの場合には、窒素、アルゴン、ヘリウムなどの不活性ガス雰囲気中、又は真空中で加熱するのが好ましい。 In addition, the heating method of the character or figure 7 and the metal mold 9 is not particularly limited. For example, the upper and lower molds 8 and 10 can be heated with an infrared heater or the like. In the case of a metal glass that easily oxidizes, it is preferably heated in an inert gas atmosphere such as nitrogen, argon, or helium, or in a vacuum.
　次に図８に示すように、文字又は図形７及び金型９の加熱温度を保ったまま上型８を引き下げて行く。上型８下がりきったところ（金型９の転写面形状の全面が、文字又は図形体７の表面上又は金属ガラスに押圧され、転写される位置）で、所定の加重をかけて所定の時間保持する（転写工程）。この加重及び時間は、例えば30～60ＭＰの加重を、１分～３分程度加える。このようにして、格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上の構造体を、文字又は図形の少なくとも一部に転写する。 Next, as shown in FIG. 8, the upper die 8 is lowered while maintaining the heating temperature of the character or figure 7 and the die 9. When the upper mold 8 has been lowered (position where the entire transfer surface shape of the mold 9 is pressed onto the surface of the character or figure 7 or the metal glass and transferred), a predetermined load is applied for a predetermined time. Hold (transfer process). For this weighting and time, for example, a weighting of 30 to 60 MP is added for about 1 to 3 minutes. In this way, any one or more structures of a lattice, a slit, a protrusion, a hole, or a latent image are transferred to at least a part of a character or graphic.
　続いて、文字又は図形７及び金型９を冷却して、金型９の押圧を解除する。文字又は図形に使用している金属ガラスのガラス遷移温度より低い温度で、文字又は図形７が転写された形状を保持出来る温度となった時に、上型８を上方に引き上げて下型10から引き離す（離型工程）。このようにして、冷却時の熱収縮による金属ガラスの金型９への食いつきを最小限に抑えることが出来る。なお上型８は、金型９が完全に文字又は図形７から離れるまで引き上げるのが良い。また、冷却方法は特に限定されず、例えば上下型８、10を窒素ガスなどで冷却すれば良い。 Subsequently, the character or figure 7 and the mold 9 are cooled, and the pressing of the mold 9 is released. The upper die 8 is pulled up and pulled away from the lower die 10 when the temperature at which the shape to which the character or figure 7 is transferred can be maintained at a temperature lower than the glass transition temperature of the metal glass used for the character or figure. (Release process). In this way, the biting of the metallic glass on the mold 9 due to the heat shrinkage during cooling can be minimized. The upper mold 8 is preferably pulled up until the mold 9 is completely separated from the character or graphic 7. The cooling method is not particularly limited, and for example, the upper and lower molds 8 and 10 may be cooled with nitrogen gas or the like.
　更に、文字又は図形７を引き続き冷却して常温状態とし（冷却工程）、最後に、上型８を完全に引き上げて、文字又は図形７を転写装置６の下型10から取り出す。 Further, the character or figure 7 is continuously cooled to room temperature (cooling process), and finally, the upper mold 8 is completely pulled up and the character or figure 7 is taken out from the lower mold 10 of the transfer device 6.
　以上のように、本実施の形態の製造方法に依れば、所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上を、一回の転写の成形で、文字又は図形に形成することが出来るため、低コストで量産性に優れた本発明に係るバルク体の製造方法を実現することが可能となる。 As described above, according to the manufacturing method of the present embodiment, any one or two or more of a predetermined lattice, slit, protrusion, hole, or latent image is formed by one transfer molding. Or since it can form in a figure, it becomes possible to implement | achieve the manufacturing method of the bulk body which concerns on this invention excellent in mass productivity at low cost.
　更に転写により、再現性良く構造体を文字又は図形に形成出来るので、高品質に構造体を製造することが出来る。従って、構造体を別材料で模倣製造したとしても、構造体表面の品質（製造ばらつき及び精度）を比較することにより、模倣品との違いを即座に見分けることが可能となる。 Furthermore, since the structure can be formed into characters or figures with good reproducibility by transfer, the structure can be manufactured with high quality. Therefore, even if the structure is manufactured by imitation using a different material, it is possible to immediately distinguish the difference from the counterfeit product by comparing the quality (manufacturing variation and accuracy) of the structure surface.
　上記実施の形態では、金型９がシリコンの110面異方性エッチングにより形成されたものを利用した。しかし金型９の転写面形状は、ステンレス鋼のダイヤモンドカッターを使った切削、又は石英ガラスのイオンエッチング、イオンミリング、或いは収束イオンビーム加工などにより形成しても良い。 In the above embodiment, the mold 9 is formed by silicon 110-plane anisotropic etching. However, the shape of the transfer surface of the mold 9 may be formed by cutting using a stainless steel diamond cutter, ion etching of quartz glass, ion milling, or focused ion beam processing.
　上記実施の形態では、所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上を転写により形成する製造方法を一例として説明した。しかし、その他にも鋳造法としてダイカスト（die casting）又は射出成形により、所定の構造体の何れか１つ又は２つ以上を形成しても良い。ダイカスト又は射出成形により構造体を形成する場合は、最初に、前述した所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上の形状と、文字又は図形の形状が少なくとも形成された金型を用意する。更に、バルク体材料として前記何れかの金属ガラスを溶融し、その金型に溶融した前記金属ガラスを流し込み、冷却する。このようにして、文字又は図形の少なくとも一部に、所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上を形成する。なお本発明では射出成形を鋳造の一種と見なし、更に射出成形が、溶融した金属ガラスを用いる製造方法を含むものと定義する。 In the above-described embodiment, the manufacturing method in which any one or two or more of a predetermined grating, slit, protrusion, hole, or latent image is formed by transfer has been described as an example. However, any one or more of the predetermined structures may be formed by die casting or injection molding as a casting method. When a structure is formed by die casting or injection molding, first, the shape of one or more of the predetermined lattice, slit, protrusion, hole, or latent image described above, and the shape of a character or figure At least a formed mold is prepared. Further, any of the metallic glasses is melted as a bulk material, and the molten metallic glass is poured into a mold and cooled. In this way, any one or more of a predetermined lattice, slit, protrusion, hole, or latent image is formed on at least a part of the character or figure. In the present invention, the injection molding is regarded as a kind of casting, and the injection molding is defined as including a manufacturing method using molten metal glass.
　ダイカスト又は射出成形においても、金型に形成される格子の間隔ｄは、前記の通り10μｍ未満の範囲内に設定されることが好ましい。また、その他の構造体を形成する場合、それぞれの構造体の形状に形成される金型の形状における単一構造の大きさは、10μｍ未満に設定されることが好ましい。 Also in die casting or injection molding, it is preferable that the interval d of the lattice formed in the mold is set within a range of less than 10 μm as described above. In the case of forming other structures, the size of the single structure in the shape of the mold formed in the shape of each structure is preferably set to less than 10 μm.
　更に、溶融した金属ガラスの温度は融点以上とする。なお、金属ガラスの溶融方法は特に限定されない。一方、射出成形でも溶融した金属ガラスの温度は融点以上とする。 Furthermore, the temperature of the molten metal glass is set to the melting point or higher. In addition, the melting method of metallic glass is not specifically limited. On the other hand, the temperature of the molten metal glass is set to the melting point or higher even in the injection molding.
　以上のようにダイカスト又は射出成形に依れば、所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上を、一回の成形で文字又は図形と共に形成することが出来るため、低コストで量産性に優れた本発明に係るバルク体の製造方法を実現することが可能となる。 As described above, according to die casting or injection molding, any one or two or more of predetermined grids, slits, protrusions, holes, or latent images can be formed together with characters or figures in a single molding. Therefore, it is possible to realize a method for manufacturing a bulk body according to the present invention which is low in cost and excellent in mass productivity.
　更に鋳造により、再現性良く構造体を文字又は図形に形成出来るので、高品質に構造体を製造することが出来る。従って、構造体を別材料で模倣製造したとしても、構造体表面の品質（製造ばらつき及び精度）を比較することにより、模倣品との違いを即座に見分けることが可能となる。 Furthermore, since the structure can be formed into characters or figures with good reproducibility by casting, the structure can be manufactured with high quality. Therefore, even if the structure is manufactured by imitation using a different material, it is possible to immediately distinguish the difference from the counterfeit product by comparing the quality (manufacturing variation and accuracy) of the structure surface.
　なお金属ガラスの溶融時からの体積収縮を抑えるために、成形時には300℃／秒以上の冷却速度で冷却凝固させることが好ましい。更に好ましい冷却速度は104℃／秒以上である。但し、成形時の冷却速度が107℃／秒を超えると、溶融した金属ガラスが金型に十分に充填される前に凝固し始めるため、充填不良となりやすい。その結果、表面粗度や寸法精度が著しく低下してしまう。このため成形時の冷却速度は、300℃／秒以上（より好ましくは104℃／秒以上）且つ107℃／秒以下に設定することが好ましい。 In order to suppress volumetric shrinkage of the metallic glass from melting, it is preferable to cool and solidify at a cooling rate of 300 ° C./second or more during molding. A more preferable cooling rate is 104 ° C./second or more. However, if the cooling rate at the time of molding exceeds 107 ° C./second, the molten metal glass starts to solidify before it is sufficiently filled in the mold, so that filling failure tends to occur. As a result, the surface roughness and dimensional accuracy are significantly reduced. For this reason, the cooling rate during molding is preferably set to 300 ° C./second or more (more preferably 104 ° C./second or more) and 107 ° C./second or less.
　更に他の製造方法として、文字又は図形を形成後、その文字又は図形の少なくとも一部にフェムト秒レーザを走査及び照射して、文字又は図形を形成するバルク体の一部をアブレーションし、所定の構造体の何れか１つ又は２つ以上を形成しても良い。所定の格子を金属ガラスで形成する場合は、フェムト秒レーザにより、間隔ｄを10μｍ未満の範囲内に設定して、格子を形成すれば良い。 As another manufacturing method, after forming a character or a figure, a femtosecond laser is scanned and irradiated on at least a part of the character or the figure to ablate a part of the bulk body that forms the character or the figure. Any one or more of the structures may be formed. When the predetermined grating is formed of metal glass, the grating may be formed by setting the distance d within a range of less than 10 μm with a femtosecond laser.
　本発明に用いるフェムト秒レーザは、金属ガラスの加工閾値以上のレーザ強度を有する必要がある。具体的には、パルス幅が150ｆｓ～１ｐｓで、繰返し周波数が１ｋＨｚ～300ｋＨｚ、波長780ｎｍ～800ｎｍ、平均出力１Ｗ前後のものが使用可能である。 The femtosecond laser used in the present invention needs to have a laser intensity equal to or higher than the processing threshold of metal glass. Specifically, a pulse width of 150 fs to 1 ps, a repetition frequency of 1 kHz to 300 kHz, a wavelength of 780 nm to 800 nm, and an average output of around 1 W can be used.
　更に、１ｐｓ以下のパルス幅を持つパルスレーザが好ましい。その理由として、パルス幅の短いレーザは10ＴＷ／ｃｍ２以上のレーザ強度を有しており、文字又は図形を形成するバルク体のアブレーションを引き起こすことがより容易に出来るためである。 Furthermore, a pulse laser having a pulse width of 1 ps or less is preferable. This is because a laser with a short pulse width has a laser intensity of 10 TW / cm 2 or more, and it is easier to cause ablation of a bulk body that forms characters or figures.
　なお、図６に示すように格子の少なくとも一部を、文字又は図形の厚み方向の少なくとも一部に形成する場合、格子５の凹凸形状が形成された厚さｔの金型を用意して、その金型を文字又は図形の厚み方向の少なくとも一部である側面に押圧して、転写により格子５を形成しても良い。 In addition, as shown in FIG. 6, when forming at least a part of the lattice in at least a part in the thickness direction of the character or figure, prepare a mold having a thickness t in which the uneven shape of the lattice 5 is formed, The grating 5 may be formed by pressing the mold against a side surface that is at least part of the thickness direction of the character or figure.
　又は、格子の形状が、文字又は図形の形状の厚み方向の少なくとも一部に形成された金型を用意すると共に、バルク体材料である前記金属ガラスを溶融し、その金型に溶融したバルク体材料を流し込み、鋳造により、文字又は図形の厚み方向の少なくとも一部に、格子５を形成しても良い。 Alternatively, a bulk body is prepared in which a mold having a lattice shape formed in at least part of the thickness direction of a character or figure shape is melted, and the metallic glass that is a bulk body material is melted and melted in the mold The lattice 5 may be formed in at least part of the thickness direction of the characters or figures by pouring material and casting.
　或いは、前記フェムト秒レーザを文字又は図形の所望の側面位置に照射することにより、格子５を形成しても良い。何れの形成方法でも、簡単に低コストで量産性良く格子５を作製出来る。 Or you may form the grating | lattice 5 by irradiating the said femtosecond laser to the desired side surface position of a character or a figure. In any of the forming methods, the lattice 5 can be easily manufactured at low cost and with high mass productivity.
　また格子の溝の間隔ｄを、527ｎｍ以上1217ｎｍ以下の範囲内に設定して、転写、鋳造、又はフェムト秒レーザの照射により、本発明に係るバルク体に形成される文字又は図形を製造しても良い。このように文字又は図形を製造することにより、真贋判定の容易化と偽造防止という、相反する２つの要求を両立させた文字又は図形を、低コストで量産性良く作製することが可能となる。 Further, by setting the gap d of the grating grooves within the range of 527 nm to 1217 nm, the characters or figures formed on the bulk body according to the present invention are manufactured by transfer, casting, or femtosecond laser irradiation. Also good. By producing characters or figures in this way, it is possible to produce characters or figures that satisfy both conflicting requirements of facilitating authenticity determination and prevention of counterfeiting at low cost and with high productivity.
　また1020ｎｍ、784ｎｍ、又は659ｎｍの何れかの、少なくとも２つ以上の異なる間隔ｄの溝を有する格子を、転写、鋳造、又はフェムト秒レーザの照射により、文字又は図形に形成しても良い。このように文字又は図形を製造することにより、三原色である赤・緑・青（RGB）の何れかの波長を有する二色以上の光を鮮明に回折させ、真贋判定の作業をより容易化可能となる文字又は図形を、低コストで量産性良く作製することが可能となる。 Further, a lattice having at least two grooves d of different intervals d of either 1020 nm, 784 nm, or 659 nm may be formed into characters or figures by transfer, casting, or femtosecond laser irradiation. By manufacturing letters or graphics in this way, it is possible to diffract light of two or more colors having one of the three primary colors of red, green, and blue (RGB) more clearly, making the task of authenticity determination easier. Thus, it becomes possible to manufacture a character or a figure that becomes a low-cost product with high productivity.
　また２つ以上の異なる溝角度θ１及びθ２で以て、文字又は図形に格子を転写、鋳造、又はフェムト秒レーザの照射により形成しても良い。このように文字又は図形を製造することにより、より一層、真性品の偽造防止を高めた文字又は図形を、低コストで量産性良く作製することが可能となる。 Also, the lattice may be transferred to a character or a figure by two or more different groove angles θ1 and θ2, cast, or formed by femtosecond laser irradiation. By manufacturing characters or graphics in this way, it is possible to manufacture characters or graphics with further improved anti-counterfeiting of genuine products at low cost and with high mass productivity.
　また金属ガラスを、Ptを主成分とする金属ガラスとして、文字又は図形に格子を転写、鋳造、又はフェムト秒レーザの照射により形成しても良い。このように文字又は図形を製造することにより、文字や図形をより容易に、低コストで量産性良く作製することが可能となる。 Alternatively, the metallic glass may be formed by transferring, casting, or irradiating a femtosecond laser with a lattice of characters or figures as metallic glass containing Pt as a main component. By manufacturing characters or figures in this way, it is possible to manufacture characters and figures more easily at low cost and with high mass productivity.
　以下に本発明の実施例を説明するが、本発明は以下の実施例にのみ限定されるものではない。 Examples of the present invention will be described below, but the present invention is not limited to the following examples.
　本実施例に係るバルク体及び文字又は図形は、金属ガラスで形成し、Ｘ軸－Ｙ軸平面方向から見たときにアルファベットのＩ形に成形した。アルファベットの高さ方向の大きさＨは２ｍｍに設定すると共に、Ｚ軸方向における厚みＴは１ｍｍに設定した。 The bulk body and letters or figures according to this example were made of metal glass and formed into an alphabetic I shape when viewed from the X-axis-Y-axis plane direction. The size H in the height direction of the alphabet was set to 2 mm, and the thickness T in the Z-axis direction was set to 1 mm.
　金属ガラスは、Pt 系の金属ガラスであり、組成（at%）はPt 48.75、 Pd 9.75、Cu 19.5、P 22（Pt48.75Pd9.75Cu19.5P22合金）とした。 The metallic glass was a Pt-based metallic glass, and the composition (at%) was Pt 48.75, Pd 9.75, Cu 19.5, P 22 (Pt 48.75 Pd 9.75 Cu 19.5 P 22 alloy).
　偽造防止対策の構造体として、図２（b）に示すような波形の格子を形成した。格子は図１に示すように、平面部に面方向に亘って形成した。格子の各溝の深さｈは270ｎｍとし、格子は図１に示すようにＸ軸に平行となるように直接、アルファベットに形成した。 As a structure for preventing counterfeiting, a corrugated lattice as shown in FIG. 2B was formed. As shown in FIG. 1, the lattice was formed in the plane portion over the surface direction. The depth h of each groove of the lattice was 270 nm, and the lattice was directly formed in the alphabet so as to be parallel to the X axis as shown in FIG.
　試料として、格子の各凹凸の頂部又は溝の間隔ｄをそれぞれ、1020ｎｍ、784ｎｍ、659ｎｍに設定した３つの試料を作製した。各格子の作製は同一の転写装置を用いて行った。金型はシリコンで作製し、転写面の凹凸形状をシリコンの110面異方性エッチングにより形成した。 As samples, three samples were prepared in which the tops of the respective irregularities of the lattice or the intervals d between the grooves were set to 1020 nm, 784 nm, and 659 nm, respectively. Each lattice was produced using the same transfer device. The mold was made of silicon, and the concavo-convex shape of the transfer surface was formed by 110-plane anisotropic etching of silicon.
　作製した３つの試料をそれぞれ、Ｘ軸－Ｙ軸平面方向から原子間力顕微鏡（AFM：Atomic Force Microscope）で観察したところ、それぞれ頂部どうしの間隔が1020ｎｍ、784ｎｍ、659ｎｍで作製されていることが確認された。 When the three prepared samples were observed with an atomic force microscope (AFM) from the plane direction of the X-axis to the Y-axis, respectively, it was found that the intervals between the tops were 1020 nm, 784 nm, and 659 nm, respectively. confirmed.
　更に、３つの試料に光をＸ軸－Ｙ軸平面方向から照射させ、格子からの１次回折光（ｍ＝１）の有無をCCDカメラで観察したところ、波長λが696ｎｍ、535ｎｍ、449ｎｍのRGB光が観察された。 Furthermore, when three samples were irradiated with light from the X-axis-Y-axis plane direction and the presence or absence of the first-order diffracted light (m = 1) from the grating was observed with a CCD camera, RGB with wavelengths λ of 696 nm, 535 nm, and 449 nm Light was observed.
　　　１、２、３、４、７　　　文字又は図形
　　　５　　　　　　　格子
　　　６　　　　　　　転写装置
　　　８　　　　　　　転写装置の上型
　　　９　　　　　　　金型
　　　10　　　　　　　転写装置の下型
　　　ｄ、d1、d2　　　頂部又は溝の間隔
　　　ｈ　　　　　　　溝の深さ
　　　Ｈ　　　　　　　文字又は図形の高さ方向の大きさ
　　　Ｔ　　　　　　　文字又は図形の厚み
　　　ｔ　　　　　　　格子の高さ 1, 2, 3, 4, 7 Characters or graphics 5 Grid 6 Transfer device 8 Upper mold of transfer device 9 Mold 10 Lower mold of transfer device d, d1, d2 Top or groove spacing h Groove depth H Character or Size of figure height direction T Character or figure thickness t Grid height

Claims (16)

  1. 　文字又は図形が形成され、更にその文字又は図形の少なくとも一部に、格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上が形成されていることを特徴とする、バルク体。 A bulk characterized in that a character or graphic is formed, and at least a part of the lattice, slit, protrusion, hole, or latent image is formed on at least a part of the character or graphic. body.
  2. 　前記格子、スリット、突起、穴、又は潜像の内、前記格子が少なくとも一部に形成されており、
    　更に前記格子が、ガラス質金属単相を含む金属ガラス、昇温速度0.67Ｋ／ｓで30Ｋ以上の過冷却液体温度域を有するガラス質金属単相を含む金属ガラス、100ｎｍ以下の粒径を有する結晶を含む金属ガラス、或いはガラス質金属組織を体積率で50％以上含む金属ガラスの何れかから成り、
    　前記格子の溝の間隔が10μｍ未満の範囲内に設定されていることを特徴とする、請求項１に記載のバルク体。     Of the grating, slit, protrusion, hole, or latent image, the grating is formed at least in part,
    Further, the lattice has a metallic glass containing a vitreous metallic single phase, a metallic glass containing a vitreous metallic single phase having a supercooled liquid temperature range of 30 K or more at a heating rate of 0.67 K / s, and a particle size of 100 nm or less. It consists of either metallic glass containing crystals or metallic glass containing 50% or more by volume of vitreous metal structure,
    The bulk body according to claim 1, wherein an interval between grooves of the lattice is set within a range of less than 10 μm.
  3. 　前記格子の前記溝の間隔が、527ｎｍ以上1217ｎｍ以下の範囲内に設定されていることを特徴とする、請求項２に記載のバルク体。 The bulk body according to claim 2, wherein an interval between the grooves of the lattice is set in a range of 527 nm to 1217 nm.
  4. 　前記格子の前記溝が、２つ以上の異なる前記間隔を有しており、
    　前記間隔が1020ｎｍ、784ｎｍ、又は659ｎｍの何れかの、少なくとも２つ以上の異なる間隔であることを特徴とする、請求項２又は３に記載のバルク体。     The grooves of the lattice have two or more different spacings;
    The bulk body according to claim 2, wherein the interval is at least two different intervals of any one of 1020 nm, 784 nm, and 659 nm.
  5. 　前記格子の前記溝が、更に、２つ以上の異なる溝角度を有することを特徴とする、請求項２～４の何れかに記載のバルク体。 The bulk body according to any one of claims 2 to 4, wherein the grooves of the lattice further have two or more different groove angles.
  6. 　前記金属ガラスが、Ptを主成分とすることを特徴とする、請求項２～５の何れかに記載のバルク体。 The bulk body according to any one of claims 2 to 5, wherein the metallic glass contains Pt as a main component.
  7. 　前記格子の少なくとも一部が、前記文字又は前記図形の厚み方向の少なくとも一部に形成されていることを特徴とする、請求項１～６の何れかに記載のバルク体。 The bulk body according to any one of claims 1 to 6, wherein at least a part of the lattice is formed in at least a part in a thickness direction of the character or the figure.
  8. 　請求項１～７の何れかに記載のバルク体を備えることを特徴とする、腕時計用の外装部品かムーブメント、装身具、タグ、又はファスナー。 An exterior part for a wristwatch or a movement, a jewelry, a tag, or a fastener, comprising the bulk body according to any one of claims 1 to 7.
  9. 　バルク体に文字又は図形を形成し、
    　文字又は図形の形成後に文字又は図形を加熱し、
    　更に、所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上の形状が形成された金型を文字又は図形に押圧して、格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上を、文字又は図形の少なくとも一部に転写し、
    　転写後に文字又は図形を冷却して金型の押圧を解除し、金型を文字又は図形から離型し、
    　更に文字又は図形を冷却するか、
    　又は少なくとも所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上の形状と、文字又は図形の形状が形成された金型を用意すると共に、バルク体材料を溶融し、
    　その金型に溶融したバルク体材料を流し込み、鋳造により文字又は図形の少なくとも一部に、所定の格子、スリット、突起、穴、又は潜像の何れか１つ又は２つ以上を形成することを特徴とする、バルク体の製造方法。     Form characters or figures in the bulk body,
    After the character or figure is formed, the character or figure is heated,
    In addition, a mold on which one or more shapes of a predetermined lattice, slit, protrusion, hole, or latent image is formed is pressed against a character or a figure, and the lattice, slit, protrusion, hole, or Transferring any one or more of the latent images to at least a part of a character or graphic;
    After the transfer, the character or figure is cooled to release the pressing of the mold, the mold is released from the character or figure,
    Cool the characters or figures further,
    Alternatively, prepare a mold having at least one of a predetermined lattice, slit, protrusion, hole, or latent image and a character or figure, and melt the bulk material. ,
    A molten bulk material is poured into the mold, and at least a part of a predetermined lattice, slit, protrusion, hole, or latent image is formed on at least a part of a character or a figure by casting. A method for producing a bulk body.
  10. 　前記文字又は前記図形の少なくとも一部を、ガラス質金属単相を含む金属ガラス、昇温速度0.67Ｋ／ｓで30Ｋ以上の過冷却液体温度域を有するガラス質金属単相を含む金属ガラス、100ｎｍ以下の粒径を有する結晶を含む金属ガラス、或いはガラス質金属組織を体積率で50％以上含む金属ガラスの何れかで形成すると共に、
    　更に前記文字又は前記図形の形成後に、前記所定の格子、スリット、突起、穴、又は潜像の内、前記格子の形状が形成された金型を用意し、
    　前記格子の溝の間隔を10μｍ未満の範囲内に設定し、
    　少なくとも金属ガラスを加熱し、
    　加熱した金属ガラスに、所定の前記格子の形状が形成された前記金型を押圧して、前記格子を金属ガラスに転写し、
    　転写後に金属ガラスを冷却して前記金型の押圧を解除し、前記金型を金属ガラスから離型し、
    　更に金属ガラスを冷却するか、
    　又は少なくとも前記格子の形状と、前記文字又は前記図形の形状が形成された前記金型を用意すると共に、前記バルク体材料として金属ガラスを溶融し、
    　その金型に溶融した金属ガラスを流し込み、鋳造により前記文字又は前記図形の少なくとも一部に、溝の間隔10μｍ未満の範囲内で前記格子を形成することを特徴とする、請求項９に記載のバルク体の製造方法。     At least a part of the character or the figure is a metallic glass containing a vitreous metallic single phase, a metallic glass containing a vitreous metallic single phase having a supercooled liquid temperature range of 30 K or more at a heating rate of 0.67 K / s, 100 nm While formed with either a metal glass containing crystals having the following particle size, or a metal glass containing a vitreous metal structure at a volume ratio of 50% or more,
    Furthermore, after the formation of the character or the figure, a mold in which the shape of the lattice is formed among the predetermined lattice, slit, protrusion, hole, or latent image is prepared,
    The interval between the grooves of the lattice is set within a range of less than 10 μm,
    At least heat the metallic glass,
    Press the mold on which the predetermined shape of the lattice is formed on the heated metal glass, and transfer the lattice to the metal glass,
    After the transfer, the metal glass is cooled to release the pressing of the mold, the mold is released from the metal glass,
    Cool the metal glass further,
    Or at least the shape of the lattice and the mold in which the shape of the character or the figure is formed, and melting the metal glass as the bulk material,
    The molten metal glass is poured into the mold, and the lattice is formed within at least a part of the character or the figure within a range of a groove interval of less than 10 μm by casting. Bulk body manufacturing method.
  11. 　前記格子の前記溝の間隔を、527ｎｍ以上1217ｎｍ以下の範囲内に設定することを特徴とする、請求項１０に記載のバルク体の製造方法。 The method for producing a bulk body according to claim 10, wherein an interval between the grooves of the lattice is set in a range of 527 nm to 1217 nm.
  12. 　前記格子の前記溝として、1020ｎｍ、784ｎｍ、又は659ｎｍの何れかの、少なくとも２つ以上の異なる前記間隔を形成することを特徴とする、請求項１０又は１１に記載のバルク体の製造方法。 The method for producing a bulk body according to claim 10 or 11, wherein at least two different intervals of 1020 nm, 784 nm, or 659 nm are formed as the grooves of the lattice.
  13. 　前記格子の前記溝に、更に、２つ以上の異なる溝角度を形成することを特徴とする、請求項１０～１２の何れかに記載のバルク体の製造方法。 The method for manufacturing a bulk body according to any one of claims 10 to 12, wherein two or more different groove angles are further formed in the grooves of the lattice.
  14. 　前記金属ガラスを、Ptを主成分とする金属ガラスとすることを特徴とする、請求項１０～１３の何れかに記載のバルク体の製造方法。 The method for producing a bulk body according to any one of claims 10 to 13, wherein the metallic glass is metallic glass containing Pt as a main component.
  15. 　前記格子の形状が形成された金型を用意すると共に、前記金型による押圧を、前記文字又は前記図形の厚み方向の少なくとも一部に施すか、
    　又は、少なくとも前記格子の形状が、前記文字又は前記図形の形状の厚み方向の少なくとも一部に形成された前記金型を用意すると共に、前記バルク体材料を溶融し、その前記金型に溶融した前記バルク体材料を流し込み、鋳造により前記文字又は前記図形の厚み方向の少なくとも一部に、前記格子を形成することを特徴とする、請求項９～１４の何れかに記載のバルク体の製造方法。     While preparing a mold in which the shape of the lattice is formed, the pressing by the mold is applied to at least a part of the thickness direction of the character or the figure,
    Alternatively, the mold in which at least the shape of the lattice is formed in at least a part of the shape of the character or the figure in the thickness direction is prepared, the bulk material is melted, and the mold is melted. The method for producing a bulk body according to any one of claims 9 to 14, wherein the bulk body material is poured and the lattice is formed in at least a part of the character or the figure in the thickness direction by casting. .
  16. 　腕時計用の外装部品かムーブメント、装身具、タグ、又はファスナーの少なくとも一部に、請求項９～１５の何れかに記載のバルク体を備えることを特徴とする、腕時計用の外装部品かムーブメント、装身具、タグ、又はファスナーの製造方法。 16. A wristwatch exterior part, movement, accessory, or accessory comprising at least a part of a wristwatch exterior part, movement, accessory, tag, or fastener, comprising the bulk body according to any one of claims 9 to 15. , Tag, or fastener manufacturing method.
PCT/JP2014/069997 2013-10-04 2014-07-30 Bulk body, housing component or movement for wristwatch, accoutrement, tag, or fastener, and method for producing these WO2015049913A1 (en)

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JP7488783B2 (en) 2021-03-17 2024-05-22 シチズン時計株式会社 Manufacturing method of decorative part, decorative part and watch
EP4390559A1 (en) * 2022-12-22 2024-06-26 The Swatch Group Research and Development Ltd Method for coating a covering part, in particular in the timepiece area, and coated covering part

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JP2007164068A (en) * 2005-12-16 2007-06-28 Gunma Univ Optical element, molding metal mold, method for making of optical element, microchemical chip, and spectroscopic analysis unit
WO2013104917A1 (en) * 2012-01-13 2013-07-18 Andrew Richard Parker Security device

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JP7488783B2 (en) 2021-03-17 2024-05-22 シチズン時計株式会社 Manufacturing method of decorative part, decorative part and watch
EP4390559A1 (en) * 2022-12-22 2024-06-26 The Swatch Group Research and Development Ltd Method for coating a covering part, in particular in the timepiece area, and coated covering part

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