JP5291885B2 - Designed medium forming method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for forming a medium having design properties, by which different color tones can be realized in respective zones of the medium and the new color tone, unrealized up to now, can be realized and to provide the medium having design properties. <P>SOLUTION: The method for forming the medium having design properties comprises: a coating film layer formation step of applying a coating material, which is obtained by dispersing a pigment having the magnetic anisotropy of &le;10<SP>-6</SP>m<SP>3</SP>/kg mass magnetic susceptibility in a resin, to a base material to form a coating film layer; a pigment orientation step of placing the coating film layer-formed base material in a magnetic field of &ge;0.3 teslas to orient the pigment in the coating film layer; and a coating film layer hardening step of hardening the coating film layer while applying the magnetic field to the coating film layer or after orienting the pigment in the magnetic field. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a designable medium forming method and a designable medium that form a designable medium having design properties by applying a paint containing a pigment to a substrate and orienting the pigment in a magnetic field.

Conventionally, as a method of forming a designable medium having a design property by applying a paint containing a pigment to a base material, by directly magnetizing and magnetizing an undercoat and / or an intermediate coat film, A “pattern coating method” (see, for example, Patent Document 1), which allows various patterns to appear on the coating film, regardless of the material or shape of the object to be coated, is dispersed in the coating film. By aligning and moving the magnetic powder that is applied by magnetic force, a “patterned coated metal plate manufacturing method” (for example, see Patent Document 2), which can give a pattern with excellent design and discrimination, By providing a resin layer containing a magnetic luster pigment oriented by applying a magnetic field on the light exit side of the light dispersion layer that is dispersed and emitted, a “designable film” that can represent different patterns depending on the observation direction (E.g. Patent Document 3), etc. are disclosed.
JP-A-6-114332 JP-A-8-38992 JP-A-9-94529

  However, in the prior art including the above-mentioned Patent Documents 1 to 3, a medium in which a plurality of regions are formed in the medium, the orientation of the pigment is changed in the plurality of regions, and a design property in which a different color tone changes in each region is realized. There wasn't.

  Moreover, in the said prior art examples 1-3, the orientation of a pigment is controlled by using the luster pigment which has a ferromagnetism. This brilliant pigment with ferromagnetism is composed of scaly and acicular ferromagnetic materials alone, those coated with titanium dioxide or iron oxide, iron oxide, nickel (Ni), etc. on mica, silica, alumina, etc. Examples include those coated with a ferromagnetic material. However, none of the above prior arts can be applied to all the ferromagnetic materials listed above. Therefore, each of the above prior art methods is limited in the ferromagnetic material to be oriented, so that only a change in luminance is realized, and it is difficult to realize a variety of design.

On the other hand, in the conventional pigment orientation method, a bright pigment having a non-ferromagnetic material such as mica, silica, and alumina as a main component and having a mass magnetic susceptibility of 10 ⁻⁶ m ³ / kg (SI unit) or less is used. In this case, since the pigment could not be moved, there was no medium in which the non-ferromagnetic glitter pigment (non-ferromagnetic pearl pigment) was oriented.

  The present invention has been made in view of the above circumstances, and a designable medium forming method and a designable medium that can realize a new color tone that has never been achieved by controlling the orientation of a non-ferromagnetic bright pigment. The purpose is to provide.

In order to solve the above problems, the invention described in claim 1 is a designable medium forming method for forming a medium having designability, wherein the magnetic anisotropy is 10 ⁻⁶ m ³ / kg or less in mass magnetic susceptibility. A coating layer forming step of forming a coating layer by applying a paint having a pigment dispersed in a resin to the substrate, and a medium having the coating layer formed on the substrate in a magnetic field of 0.3 Tesla or more. A pigment orientation step for orienting the pigment in the coating layer, and a coating layer curing step for curing the coating layer while applying a magnetic field or after applying the magnetic field to orient the pigment. wherein, pigment orientation step has a predetermined pattern formed by paint containing the ferromagnetic body and the ferromagnetic region formed by paint containing the ferromagnetic body is formed of a non-ferromagnetic A magnetic member having a non-ferromagnetic material region adjacent to a predetermined portion of the coating layer. The pigment is oriented in a predetermined direction for each predetermined portion of the coating layer formed in the coating layer forming step.

The invention according to claim 2 constitutes the pattern formed in the coating layer by the magnetic member and the magnetic lines that form the magnetic field when applying the magnetic field to the coating layer in the pigment orientation step in the invention according to claim 1. a straight portion and a curved portion and wherein to Rukoto so as not to horizontal.

  According to the present invention, a novel design medium with a new color tone can be realized by controlling the orientation of the non-ferromagnetic glitter pigment.

[First Embodiment]
As a first embodiment of the present invention, a designable medium forming method and a designable medium will be described.

The designable medium forming method of the present embodiment is a method for forming a designable medium (designable medium), and as shown in FIG. 6, a magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less. A coating layer forming step of forming a coating layer by applying a coating material in which an anisotropic pigment is dispersed in a resin to form a coating layer (step S1), and a medium having the coating layer formed on the substrate is set to 0 .Placed in a magnetic field of 3 Tesla or more and orienting the pigment in the coating layer (Step S2), with the magnetic field applied or after applying the magnetic field and orienting the pigment And a coating layer curing step (step S3) for curing the layer.

Fig.1 (a) is a figure which shows typically the side surface of the medium formed in the coating layer formation step (FIG. 6, step S1) in the designable medium formation method of this embodiment. As shown in FIG. 1A, the medium 5 is a coating film (= coating layer) by applying a paint to one surface of a base material (for example, a non-magnetic material such as resin, paper, or ceramic) 5b. ) 5a is formed. The paint constituting the coating film 5a is a paint in which a glitter pigment mainly composed of a diamagnetic material such as mica, silica, or alumina is uniformly dispersed in a solventless low-viscosity curable resin. The pigment has a magnetic susceptibility and magnetic anisotropy of a mass magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less. Examples of materials having a mass magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less include paramagnetic materials and diamagnetic materials. Moreover, a high designability can be obtained by using a bright pigment.

  In the medium 5 shown in FIG. 1 (a), the orientation state of the pigment before application of the magnetic field (after the coating layer forming step S1 and before the pigment orientation step S2) is almost horizontal as shown in FIG. 2 (a). (Substantially horizontal state). In this substantially horizontal state, as shown in FIG. 2A, when incident light L is applied from the medium surface, interference color and gloss appear on the medium surface in the range of 0 ° to 150 °. Regardless of whether the anisotropic magnetic susceptibility of the pigment is a positive (+) value or a negative (-) value, if the pigment has an elliptical shape or scale shape as shown in FIG. Since it is stable in terms of energy, as shown in FIG. 2A, the major axis of the pigment is in a state of being arranged almost horizontally with respect to the substrate 5b.

  The diamagnetic material contained in the glitter pigment has a very low magnetic susceptibility compared to a ferromagnetic material such as iron or nickel, but when the crystal structure of the substance is asymmetric, the orientation of the crystal axis This causes a slight difference in magnetic susceptibility. This is called crystal magnetic anisotropy. When placed in a strong magnetic field, the crystal rotates and orients so that the crystal axis orientation with a large magnetic susceptibility is parallel to the magnetic field direction.

  In addition, when a solvent is used, the volume of the paint is reduced when the solvent evaporates, so that the upright pigment may fall down. In order to prevent this, it is preferable to use a solvent-free resin. Furthermore, it is desirable to use a solvent-free low-viscosity curable resin, for example, UV curable resin, thermoplastic resin, thermosetting resin having a low viscosity is easy to orient the scaly glitter pigment, preferable.

Details of the pigment orientation method (pigment orientation step S2 in FIG. 6) according to one step of the designable medium forming method of the present embodiment will be described below.
FIGS. 1B and 1C are diagrams schematically showing an apparatus for performing the pigment orientation step shown in step S <b> 2 of FIG. 6. As shown in FIGS. 1B and 1C, this apparatus has magnetized yokes 1 and 2 of electromagnets. These magnetized yokes 1 (S pole) and 2 (N pole) have coils wound around portions (not shown). The magnetized yokes 1 and 2 have a plurality of magnetic lines 3a, 3b, 3c,. By generating the magnetic field, a magnetic field is formed between the magnetized yokes 1 and 2. As shown in FIGS. 1B and 1C, these magnetic force lines 3a to 3m include a linear portion (or a substantially linear portion) and a curved portion. The strength of the magnetic field formed is 0.3T (T is Tesla) or more, preferably 1T or more. In the pigment orientation step shown in step S2 of FIG. 6, as shown in FIGS. 1B and 1C, the magnetic field (a plurality of magnetic lines 3a to 3m) formed between the magnetized yokes 1 and 2 is used. In the coating layer forming step, the medium 5 on which the coating film 5a is formed is disposed on the substrate 5b, a magnetic field is applied, and the pigment in the coating film 5a is oriented.

  Here, in the pigment orientation step S2, as shown in FIG. 1B, when the medium 5 is disposed horizontally with respect to the linear portion of the magnetic lines of force 3g (lateral magnetic field, horizontal magnetic field), FIG. As shown in c), the case where the medium 5 is arranged perpendicularly to the linear portion (or substantially linear portion) of the magnetic force lines 3e to 3i (longitudinal magnetic field, vertical magnetic field) is taken as an example below. Explained.

  In the case where the anisotropic magnetic susceptibility of the pigment is negative (−), when the magnetic field is applied to the medium 5 with the horizontal magnetic field shown in FIG. 1B, the pigment component 14 in the coating film 5a becomes as shown in FIG. The orientation changes from the substantially horizontal state of FIG. 2 to the vertical state of FIG. In addition, when the anisotropic magnetic susceptibility of the pigment is a negative (−) value and the medium 5 is magnetically applied with the vertical magnetic field shown in FIG. 1C, the substantially horizontal state of FIG. The orientation changes to the uniform horizontal state of c). Therefore, when the anisotropic magnetic susceptibility of the pigment is a negative (-) value, the orientation of the pigment can be controlled by disposing the medium in the magnetic field lines orthogonal to the angle at which the pigment is to be oriented.

  When the anisotropic magnetic susceptibility of the pigment is a positive (+) value and the medium 5 is applied with the vertical magnetic field shown in FIG. 1 (c), the pigment component 14 in the coating film 5a becomes as shown in FIG. 2 (a). The orientation changes from the substantially horizontal state to the vertical state of FIG. When the anisotropic magnetic susceptibility of the pigment is a positive (+) value and the medium 5 is applied with the horizontal magnetic field shown in FIG. 1B, the substantially horizontal state shown in FIG. ) In a uniform horizontal state. Therefore, when the anisotropic magnetic susceptibility of the pigment is a positive (+) value, the orientation of the pigment can be controlled by arranging the medium in the magnetic field line along the angle at which the pigment is to be oriented.

  In the pigment orientation step S2, the coating layer curing step S3 for curing the coating film 5a by ultraviolet irradiation after the magnetic field is applied to the medium 5 or the pigment 14 is oriented by applying the magnetic field to the medium 5 is performed. Do. By the above steps S1 to S3, the designable medium of the present embodiment is formed.

  As described above, according to the designable medium forming method of the present embodiment, the pigment is arranged in the linear portion (or the substantially linear portion) of the magnetic lines of force and the pigment orientation step of applying a magnetic field is performed. Since the pigment having magnetic anisotropy is uniformly oriented, when the scaly glittering pigment is oriented perpendicularly to the substrate, it is possible to realize a design with a color tone greatly different from the color tone usually obtained. In addition, when the scaly glitter pigment is oriented horizontally with respect to the base material, the pigments are arranged more uniformly than the orientation of the pigment having magnetic anisotropy that is usually applied, so a more vivid color tone is obtained. Can be realized.

  In the description of the pigment orientation step described above, the medium 5 is disposed in the straight line portion of the magnetic force lines. However, in FIGS. 1B and 1C, the medium 5 is disposed in the curved line portion of the magnetic force lines. May be. This case will be described below.

  For example, as shown in FIG. 3 (a), a coating film of a paint containing a scaly glittering pigment having an anisotropic magnetic susceptibility having a positive (+) value at the curve portion of the magnetic force lines 3a to 3e in a vertical magnetic field. When the medium 5 on which is formed is placed and a magnetic field is applied, as shown in FIG. 3B, the pigment components 14a, 14b, 14c, and 14d in the coating film 5a follow the curved portions of the magnetic force lines 3a to 3e. Are each oriented.

  Therefore, as shown in FIG. 3B, since the orientation angles (tilts) of the scaly glitter pigments 14a to 14d are different from each other, the way of reflecting the light when the medium is tilted is different for each part of the medium surface. As a result, it is possible to obtain a change in color tone that has not occurred in the past. Further, as shown in FIG. 3B, not only the light from the surface of the medium but also the light from the side surface of the medium (incident light L) can be reflected. It is also possible to obtain a color tone change due to light reflection.

  Next, the color tone change of the designable medium formed by the designable medium forming method of the present embodiment described above will be described. In the following description, as an example, the medium 5 (in which the anisotropic magnetic susceptibility of the pigment has a positive (+) value and the coating film 5a including the scaly glitter pigment is formed on the substrate 5b ( The case where FIG. 1A is formed by applying a magnetic field with a horizontal magnetic field will be described.

  First, in FIG. 4 (a), the medium 5 is arranged at the position of the linear magnetic force line 3g (the position indicated by the arrow A in the drawing) among the magnetic force lines 3a to 3m, and the pigment is oriented by applying a magnetic field. When the designable medium 30 shown in FIG. 4B is formed by curing 5a, when the designable medium 30 is tilted and observed, the color tone changes on the entire surface where the pigment is applied (coating film 5a). Further, when the designable medium 30 is cut at the position bb ′ shown in FIG. 4B and the cross section thereof is observed, the respective columns of the pigment are horizontally uniform as shown in FIG. 9C. (The same as FIG. 2C).

  On the other hand, in FIG. 4 (a), the medium 5 is placed at the position of the magnetic line of magnetic force 3a (position indicated by the arrow B in the figure) among the magnetic lines 3a to 3m, and the pigment is oriented by applying a magnetic field. When the designable medium 30 shown in FIG. 4B is formed by curing 5a, when the designable medium 30 is tilted and observed, the color tone changes continuously on the pigment application surface (coating film 5a). That is, as shown in FIG. 5A, when the back side of the designable medium 30 that is in a horizontal state is tilted, the belt-like gloss 33 that appears on the near side is changed from the near side to the far side in accordance with the tilt. It moves on the surface of the designable medium 30. Further, as shown in FIG. 5B, when the front side of the designable medium 30 in the horizontal state is tilted, the belt-like gloss 33 appearing on the back side is shifted from the back side to the front side in accordance with the tilt. It moves on the surface of the designable medium 30. Further, when the designable medium 30 is cut at the position bb ′ shown in FIG. 4B and the cross section is observed, the pigment is aligned along the curved magnetic field lines as shown in FIG. 9E. Is in an inclined orientation state.

Here, the difference between the above-described pigment orientation method according to the present embodiment and the above Patent Documents 1 to 3 will be described below.
In Patent Document 1, the particles to be used are clearly indicated as 5 to 100 emu / g, which is clearly a ferromagnetic material.
In Patent Document 2, there is a magnetic powder coated with a metal or alloy containing Ni, Co, and Fe, and a magnetic field of 100 to 3000 gauss (0.01 T to 0.3 T) is used. The scaly glittering pigment having a mass magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less is oriented by using a strong magnetic field of 0.3 T or more, preferably 1 T or more.
In Patent Document 3, the bright pigment used is a ferromagnetic material such as γ-Fe2O3, Fe3O4, Ni foil, etc. as a single material, and Co, Ni, Fe3O4, etc., as a material to be coated on a nonmagnetic material. It increased more than 10 ^-6 m ³ / kg as a mass susceptibility.
Moreover, although the magnetic field intensity of this embodiment is 0.3 T or more, preferably 1 T or more, a coating liquid containing a ferromagnetic pigment described in Patent Documents 1 to 3 is used in this embodiment. When the magnetic field is brought close to a strong magnetic field of 0.3 T or more, the pigment is attracted to the magnetic field and a uniform coating film cannot be obtained.

  Hereinafter, Examples 1-4 and a comparative example are demonstrated as a specific example of the designable medium formation method and designable medium of this embodiment mentioned above. In addition, the pearl pigments (made by Merck) used in the following Examples 1 to 4 and Comparative Examples 1 to 4 all have an anisotropic magnetic susceptibility (see Table 2 described later).

  In Example 1, a coating film was formed on a PET film using a coating material in which 10 parts by weight of a pearl pigment (Merck, Color Code) was added to 100 parts by weight of an ultraviolet curable resin, and a 5 T horizontal magnetic field (transverse magnetic field) was formed. The film was allowed to stand for 5 minutes and then irradiated with ultraviolet rays to cure the coating film to form a medium.

  In Example 2, a coating film was formed on a PET film using a coating material in which 10 parts by weight of a pearl pigment (Merck, Color Code) was added to 100 parts by weight of an ultraviolet curable resin, and a 5T vertical magnetic field (longitudinal magnetic field) was formed. The film was allowed to stand for 5 minutes and then irradiated with ultraviolet rays to cure the coating film to form a medium.

  In Example 3, a coating film was formed on a PET film using a coating material in which 10 parts by weight of a pearl pigment (Merck, Xillaric T60-21) was added to 100 parts by weight of an ultraviolet curable resin, and a 5 T horizontal magnetic field (horizontal) (Magnetic field) for 5 minutes and then irradiated with ultraviolet rays to cure the coating film to form a medium.

  In Example 4, a coating film was formed on a PET film by using a coating material in which 10 parts by weight of a pearl pigment (Merck, Xillaric T60-21) was added to 100 parts by weight of an ultraviolet curable resin, and a 5 T vertical magnetic field (longitudinal) (Magnetic field) for 5 minutes and then irradiated with ultraviolet rays to cure the coating film to form a medium.

<Comparative example 1>
Comparative Example 1 is a comparative example of Examples 1 and 2, in which a coating film was formed on a PET film using a paint in which 10 parts by weight of a pearl pigment (Merck, Color Code) was added to 100 parts by weight of an ultraviolet curable resin. Then, the coating was cured by irradiating with ultraviolet rays to form a medium.

<Comparative example 2>
Comparative Example 2 is a comparative example of Examples 3 and 4, which was applied on a PET film using a paint in which 10 parts by weight of a pearl pigment (Merck, Xillaric T60-21) was added to 100 parts by weight of an ultraviolet curable resin. A film was formed, and then the ultraviolet ray was irradiated to cure the coating film to form a medium.

<Comparative Example 3>
Comparative Example 3 is a comparative example of Examples 1 and 2, in which a coating film was formed on a PET film using a paint in which 10 parts by weight of a pearl pigment (Merck, Color Code) was added to 100 parts by weight of an ultraviolet curable resin. The film was formed and allowed to stand in a horizontal magnetic field (transverse magnetic field) of 0.05 T (500 gauss) for 5 minutes, and then the ultraviolet ray was irradiated to cure the coating film to form a medium.

<Comparative example 4>
Comparative Example 4 is a comparative example of Examples 3 and 4, which was applied on a PET film using a paint in which 10 parts by weight of a pearl pigment (Millack, Xillaric T60-21) was added to 100 parts by weight of an ultraviolet curable resin. A film was formed, left in a horizontal magnetic field (transverse magnetic field) of 0.05 T (500 gauss) for 5 minutes, and then irradiated with ultraviolet rays to cure the coating film to form a medium.

Table 1 shows the evaluation results of the media formed in Examples 1 to 4 and Comparative Examples 1 to 4.

Compared with the medium of Comparative Example 1, the medium of Example 1 had the pigment oriented vertically (see FIG. 2 (b)), and the color tone was light cyan to light red. The medium of Example 2 was not changed compared to Comparative Example 1.
In the medium of Example 3, compared with the medium of Comparative Example 2, the pigment was oriented vertically (see FIG. 2B), and the color tone became light red. The medium of Example 4 was not changed compared to Comparative Example 2.

In the medium of Comparative Example 3, no change was observed in the orientation of the pigment, and the pigment was almost horizontally oriented (see FIG. 2A), and the color tone remained light blue to red.
The medium of Comparative Example 4 also showed no change in the orientation of the pigment, was in a state of being oriented substantially horizontally (see FIG. 2A), and the color tone remained red.

  Therefore, according to Examples 1 to 4 and Comparative Examples 1 to 4 described above, the pigments (Color Code and Xillaric T60-21) having a negative anisotropic magnetic susceptibility are originally horizontally oriented. By arranging in a horizontal magnetic field as in 1 and 3 and applying a magnetic field, the orientation state of the pigment can be controlled vertically. Further, the formed medium has a color tone different from the original color tone. In addition, there is no change in the orientation of the pigment at a weak magnetic field of 0.05T.

As the pigment applicable to the present invention, Color Code and Xillaric T60-21 were used in Examples 1 to 4 described above. Examples of other pigments are shown in Table 2.

  Similar to the above Color Code and Xillaric T60-21, examples of the pigment having a negative anisotropic magnetic susceptibility include Iridodin 302 and Iridodin 524 (Merck). When a medium was formed using Iridodin 302 in the same manner as in each of the above examples, it was a gold color tone when formed without a magnetic field or formed with a vertical magnetic field, but it became an ocher color tone when formed with a horizontal magnetic field. . In addition, when the medium was formed by using the same method as in the above examples using Iridodin 524, the metallic luster red color tone was obtained in the formation without a magnetic field or the vertical magnetic field, but the brown color tone was formed in the formation with a horizontal magnetic field. It became.

  Examples of pigments having an anisotropic magnetic susceptibility of + include Xillaric T60-23 (Merck), SECURE SHIFT (Flex Product), and Infinite R-08 (Shiseido). Using these pigments, media were formed by the same method as in the above examples. The formation without a magnetic field and the formation with a horizontal magnetic field had the same color tone, but the formation with a vertical magnetic field had a different color tone. became. In other words, the Xillaric T60-23 changes from the original blue color to a light blue color, the SECURE SHIFT changes from the original rose to green color to black only, and the Infinite R-08 changes to the original color. The color changed from an azuki bean color to a bluish purple color tone only to an azuki bean color.

In Table 2, pigments (Iriodin302, Iriodin524, Infinite R-08) in which Mica is coated with a ferromagnetic material (Fe2O3) are α-Fe2O3 having very weak ferromagnetism for the purpose of obtaining a bronze color. The mass magnetic susceptibility as a pigment is 10 ⁻⁶ m ³ / kg or less (in the conventional magnetic field orientation technology, γ-Fe 2 O 3 and Fe 3 O 4 were used as ferromagnetic materials, but this In order to increase the rate, α-Fe 2 O 3 having a low magnetic susceptibility has not been used conventionally). On the other hand, in Table 2, a pigment (SECURE SHIFT, Color Code) composed only of a diamagnetic material requires a magnetic field of 1T or more.

[Second Embodiment]
As a second embodiment of the present invention, a designable medium forming method and a designable medium will be described.
In the first embodiment, the designable medium is formed using a base material that does not transmit light. Therefore, in the designable medium of the first embodiment, the color tone is changed by reflecting the light incident from the front surface and the side of the medium, but the light incident from the back surface of the medium is blocked by the base material. In the present embodiment, a designable medium capable of reflecting incident light from the back surface of the medium and a method for forming the same are realized.

The design method of the designable medium of the second embodiment is the same as that of the first embodiment. That is, as shown in FIG. 6, a coating material in which a pigment having a magnetic anisotropy having a mass magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less is dispersed in a resin is applied to a substrate to form a coating layer. A coating layer forming step (step S1), a medium in which the coating layer is formed on the substrate is placed in a magnetic field of 0.3 Tesla or more, and a pigment orientation step for orienting the pigment in the coating layer (step S2). And a coating layer curing step (step S3) in which the coating layer is cured while the magnetic field is applied or after the pigment is oriented by applying the magnetic field. In this embodiment, the point which uses a transparent base material as a base material which forms a coating layer by coating layer formation step S1 differs from 1st Embodiment. Hereinafter, details of the designable medium forming method of the present embodiment will be described.

In the designable medium forming method of the present embodiment, first, in the coating layer forming step S1, as shown in FIG. 7, a transparent substrate (for example, plastic, film, glass, etc.) 5c that transmits light is used. A paint is applied to one surface of the transparent substrate 5c to form a coating film 5a. This paint consists of a luster pigment based on diamagnetic materials such as mica, silica, and alumina. It is a solvent-free, low-viscosity curable resin (ultraviolet curable resin, thermoplastic resin, thermosetting resin with low viscosity) The diamagnetic glitter pigment has a magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less and magnetic anisotropy. Thus, the configuration of the paint is the same as that of the first embodiment.

  The pigment orientation step S2 and the coating layer curing step S3 after the coating layer forming step S1 are the same as those in the first embodiment. That is, in the pigment orientation step S2, the medium 5 in which the coating film 5a is formed on the transparent substrate 5c is disposed at a predetermined position in the magnetic field of FIG. 1 (b) or FIG. Apply a magnetic field. Thereby, the scaly glittering pigment 14 is oriented as shown in FIGS. 2B and 2C and FIGS. 17A and 17B, for example. Thereafter, as the coating layer curing step S3, the coating film 5a is cured by ultraviolet irradiation after the magnetic field is applied to the medium 5 or the pigment 14 is oriented by applying the magnetic field to the medium 5. By the above steps S1 to S3, the designable medium of the present embodiment is formed.

  For example, in the designable medium of the present embodiment, when the pigment 14 has the vertical orientation shown in FIG. 2B, as shown in FIG. 7, the incident light L incident from the back surface of the medium is the transparent substrate 5c. , And strikes and reflects the scaly glittering pigment 14 (note that incident light from the surface of the medium passes through the medium). Therefore, the designable medium of this embodiment can reflect incident light from the back surface of the medium by forming it using a transparent base material, and can obtain a color tone change that has not occurred in the past.

  Hereinafter, examples and comparative examples will be described as specific examples of the designable medium forming method and the designable medium of the present embodiment described above. The pearl pigment (Merck, Iriodin 302) used in the following Example 5 and Comparative Example 5 has an anisotropic magnetic susceptibility of −, and as shown in Table 3, was originally gold, It is a pigment that exhibits an ocher luster when exposed to light.

  In Example 5, a coating film is formed on a transparent PET film using a coating material in which 10 parts by weight of a pearl pigment (Merck, Iriodin 302) is added to 100 parts by weight of an ultraviolet curable resin, and a horizontal magnetic field (transverse magnetic field) of 5T is formed. The film was allowed to stand for 5 minutes and then irradiated with ultraviolet rays to cure the coating film to form a medium.

<Comparative Example 5>
Comparative Example 5 is a comparative example of Example 5 in which a coating film was formed on a transparent PET film by using a paint in which 10 parts by weight of a pearl pigment (Merck, Iriodin 302) was added to 100 parts by weight of an ultraviolet curable resin. Thereafter, the coating film was cured by irradiation with ultraviolet rays to form a medium.

Then, in the medium of Example 5 and the medium of Comparative Example 5, light was applied to the front and back surfaces, the medium was tilted by 45 °, and the state of the coating film on the surface of each medium was visually observed. The observation results are shown in Table 3.

  As shown in Table 3, the medium of Comparative Example 5 is in a state in which the pigments are oriented almost horizontally (see FIG. 2A). Although it was recognized, when it was exposed to light from the back surface, it remained the original gold color and no glitter was recognized. On the other hand, the medium of Example 5 is in a state in which the pigment is vertically oriented (see FIG. 2B and FIG. 7). However, when light was applied from the back side, an ocher-like glitter was observed.

  Therefore, according to Example 5 described above, the light from the back surface of the medium can be made incident by forming the medium using the transparent substrate, and the vertically oriented pigment reflects the incident light ( 7), interference color and gloss can be obtained on the surface of the medium.

[Third Embodiment]
As a third embodiment of the present invention, a designable medium forming method and a designable medium will be described.
In the first embodiment and the second embodiment, a coating layer (coating film 5a) is provided, and then a magnetic field is applied to the entire coating layer to orient the pigment. Then, after forming a coating layer on a base material like the said 1st Embodiment, a pigment is orientated to a predetermined direction for every predetermined part of this coating layer. That is, in the present embodiment, after a medium is formed by providing a coating layer, a pattern member (magnetic member) having a predetermined pattern formed by a ferromagnetic material or a paint containing a ferromagnetic material is formed on the medium. A magnetic field is applied in the state of being adjacent to each other, and the pigment is oriented. Therefore, according to the present embodiment, different pigment orientations can be realized in the pattern portion where the pattern member is adjacent and the portion other than the pattern portion (the portion where the pattern member is not adjacent). Differences in contrast and color tone can be expressed for each layer (on the same coating film).

The designable medium forming method of the present embodiment is a method for forming a designable medium (designable medium), as shown in FIG. 11, having a magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less. A coating layer forming step of forming a coating layer by coating a base material with a paint in which an anisotropic pigment is dispersed in a resin (step S11), and a medium having a coating layer formed on the base material, A pigment in the coating layer is placed in a magnetic field of 0.3 Tesla or more in a state where a pattern member (magnetic member) having a predetermined pattern formed by a ferromagnetic material or a coating material containing a ferromagnetic material is placed adjacent to each other. A pigment orientation step for orienting the coating layer (step S12), and a coating layer curing step for curing the coating layer after applying the magnetic field or after orienting the pigment by applying the magnetic field (step S13). It is characterized by that.

  First, also in the designable medium forming method of the present embodiment, a medium in which a coating layer is formed by applying a paint to a base material is formed. The coating layer forming step S11 shown in FIG. Since this is the same as the coating layer forming step S1 of the second embodiment or the second embodiment, description thereof is omitted here.

  Next, details of the pigment orientation step S12 of FIG. 11 will be described below. In FIG. 8, the same parts as those in FIG. 1 and FIG. 4A of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the following description, the anisotropic magnetic susceptibility of the pigment is a positive (+) value, and a coating containing a scaly glittering pigment is applied to the substrate 5b to provide the coating film 5a. 1 (a)) (after the coating layer forming step S11 in FIG. 11), the medium 5 is applied with a horizontal magnetic field as an example.

  In the pigment orientation step S12, as shown in FIG. 8 (a), the magnetic member 4 is disposed at the position of the linear magnetic force line 3g (the position indicated by the arrow A in the figure) among the magnetic force lines 3a to 3m. A medium 5 is placed on 4 and a magnetic field is applied. Alternatively, as shown in FIG. 8A, among the magnetic force lines 3a to 3m, the positions of the curved magnetic lines 3a to 3d (positions indicated by the arrow B in the figure) and the positions of the curved magnetic lines 3l (the arrow C in the figure). The magnetic member 4 is disposed at a position indicated by, and the medium 5 is disposed on the magnetic member 4 to apply a magnetic field. In FIG. 8A, it is assumed that the magnetic member 4 is supported by a support member made of a nonmagnetic material (not shown) such as ceramic. Further, the strength of the magnetic field formed in FIG. 8A is 0.3 T (T is Tesla) or more, preferably 1 T or more.

  In the magnetic member 4 shown in FIG. 8A, as shown in FIG. 8B, the ferromagnetic region 4a has a desired pattern shape (11 in this embodiment) on at least one surface (upper surface in the drawing). A non-ferromagnetic region (a magnetic material other than a ferromagnetic material, for example, a diamagnetic material, a paramagnetic material, or a weak magnetic material) 4b is formed adjacent to the ferromagnetic material region 4a. It is formed. Examples of the magnetic member 4 include a laminate in which strip-shaped members made of a ferromagnetic material and strip-shaped members made of a non-ferromagnetic material are alternately stacked. By alternately laminating a ferromagnetic material and a non-ferromagnetic material, the magnetic member can be easily manufactured, and a fine pattern can be obtained by reducing the thickness of the belt-like member. Examples of the ferromagnetic material include iron, nickel, and cobalt, and examples of the diamagnetic material include aluminum and copper. As shown in FIG. 8B, the magnetic member 4 of this embodiment includes a ferromagnetic material (11 sheets) having a thickness of 0.3 mm and a non-ferromagnetic material (10 sheets) having a thickness of 0.3 mm. Alternating layers are stacked. Further, as the magnetic member 4, since oxygen is a paramagnetic material, for example, a member made of a ferromagnetic material may be provided with unevenness.

  A configuration of a magnetic member 40 which is a modification of the magnetic member 4 is shown in FIG. The magnetic member 40 is obtained by etching a plate-like member 40a made of a ferromagnetic material so that a pattern remains using a photolithography technique, and embedding a non-ferromagnetic material 40b in the obtained groove.

  In the pigment orientation step S12, the coating layer curing step S13 for curing the coating film 5a by ultraviolet irradiation after the magnetic field is applied to the medium 5 or the pigment 14 is oriented by applying the magnetic field to the medium 5 is performed. Do. Through the above steps S11 to S13, the designable medium of the present embodiment is formed. In the designable medium thus formed, a parallel line pattern (pattern) of the magnetic member 4 is reflected on the surface of the medium, and a pattern having the same shape as the pattern is formed.

  Here, in FIG. 8A, the designable medium 30 formed by applying a magnetic field at the positions indicated by the arrows A, B, and C will be described. Fig.9 (a) is a top view which shows the surface of the designable medium 30 formed with the said designable medium formation method, FIG.9 (b), (d), (f) is FIG.9 (a). FIG. 9C, FIG. 9E, and FIG. 9G are bb ′ side cross-sectional views of FIG. 9A. In addition, in these FIG.9 (b)-(g), the straight line or curve shown in 5a shall show the orientation state of the pigment in the coating film 5a typically.

  As shown in FIG. 9A, in the designable medium 30 of the present embodiment, eleven parallel straight lines 32 are formed in the central portion of the medium surface by using the magnetic member 4 (see FIG. 9A). The peripheral portion other than the pattern 32 portion is 5ac). The pattern 32 is composed of eleven straight portions 5ap and 5ab between the straight portions.

  The pigment orientation state of the designable medium 30 formed by applying a magnetic field at the position indicated by the arrow A will be described. When the designable medium 30 is cut and observed at the positions aa ′ and bb ′ shown in FIG. 9A, the side cross-sections shown in FIGS. 9B and 9C are obtained. Yes. In FIG. 9B, in the coating film 5a, a region 5ac corresponding to the non-ferromagnetic material region 4b of the magnetic member 4 and a region 5ac corresponding to a portion not in contact with the magnetic member 4 (air: diamagnetic material). Then, the orientation of the pigment is in a horizontal state along the horizontal magnetic field lines. On the other hand, in FIG. 9B, in the coating film 5a, in the region corresponding to the ferromagnetic region 5ap of the magnetic member 4, the orientation of the pigment is in a vertical state due to the influence from the ferromagnetic region 4a. . Moreover, in FIG.9 (c), the orientation of the pigment in the coating film 5a is a uniform horizontal state.

  In this designable medium 30, different color tones can be obtained in the pattern 32 (5ap and 5ab) and the peripheral portion (5ac) other than the pattern 32. However, even if the designable medium 30 is tilted, the color tone change is not obtained. I can't.

  The pigment orientation state of the designable medium 30 formed by applying a magnetic field at the position indicated by the arrow B will be described. When the designable medium 30 is cut and observed at the positions aa ′ and bb ′ shown in FIG. 9A, the cross sections shown in FIGS. 9D and 9E are obtained. Yes. In FIG. 9 (e), the orientation of the pigment in the coating film 5a is in a state of being inclined along a curved line of magnetic force (a state of “convex upward” as a whole). In FIG. 9D, the orientation of the pigment is the same as in FIG. 9E in the region 5ac corresponding to the portion of the coating film 5a that is not in contact with the magnetic member 4 (air: diamagnetic material). In the region 5ab corresponding to the non-ferromagnetic material region 4b of the magnetic member 4, the orientation of the pigment is upside down from the state shown in FIG. 9 (e). (The state of “convex downward” as a whole). 9D, in the coating film 5a, in the region corresponding to the ferromagnetic region 5ap of the magnetic member 4, the pigment orientation is in a vertical state due to the influence from the ferromagnetic region 4a. .

  When the designable medium 30 is tilted and observed, continuous color tone changes are obtained in the pattern 32 (5ap and 5ab) and the peripheral portion (5ac) other than the pattern 32, respectively. That is, as shown in FIG. 10A, when the back side of the design medium 30 in the horizontal state is tilted, on the peripheral surface other than the pattern 32, the belt-like luster 33 appearing on the near side matches the tilt. The belt-like luster 31 moves on the surface of the pattern 32 toward the direction opposite to the inclined direction (front side). Moving. Further, as shown in FIG. 10B, when the near side of the design medium 30 in the horizontal state is tilted, on the peripheral surface other than the pattern 32, a belt-like gloss 33 appearing on the back side in accordance with the tilt. It moves on the surface of the designable medium 30 toward the front side, and on the surface of the pattern 32, the belt-like gloss 31 is on the surface of the pattern 32 in the direction opposite to the inclined direction (back side). To move.

  The pigment orientation state of the designable medium 30 formed by applying a magnetic field at the position indicated by the arrow C will be described. When the designable medium 30 is cut and observed at the positions aa ′ and bb ′ shown in FIG. 9A, the side cross sections shown in FIGS. 9F and 9G are obtained. Yes. In FIG. 9 (g), the orientation of the pigment in the coating film 5a is in a state of being inclined along a curved magnetic field line (as a whole "downwardly projecting"). In FIG. 9 (f), in the region 5ac corresponding to the portion (air: diamagnetic material) of the coating film 5a that is not in contact with the magnetic member 4, the orientation of the pigment is the same as in FIG. 9 (g). In the region 5ab corresponding to the non-ferromagnetic material region 4b of the magnetic member 4, the orientation of the pigment is reversed to the state shown in FIG. 9 (g). (The state of “convex upward” as a whole). In FIG. 9F, in the coating film 5a, in the region corresponding to the ferromagnetic region 5ap of the magnetic member 4, the pigment orientation is in a vertical state due to the influence of the ferromagnetic region 4a. .

  When the designable medium 30 is tilted and observed, continuous color tone changes are obtained in the pattern 32 (5ap and 5ab) and the peripheral portion (5ac) other than the pattern 32, respectively. That is, as shown in FIG. 10C, when the front side of the horizontal design medium 30 is tilted, on the peripheral surface other than the pattern 32, the belt-like luster 33 appearing on the near side appears in the back according to the tilt. The belt-like luster 31 moves on the surface of the pattern 32 toward the direction opposite to the inclined direction (front side). Moving. Further, as shown in FIG. 10D, when the back side of the designable medium 30 in the horizontal state is tilted, on the peripheral surface other than the pattern 32, a belt-like gloss 33 appearing on the back side is formed in accordance with the tilt. It moves on the surface of the designable medium 30 toward the front side, and on the surface of the pattern 32, the belt-like gloss 31 is on the surface of the pattern 32 in the direction opposite to the inclined direction (back side). To move.

  In the present embodiment, eleven parallel lines (the ferromagnetic region 4a of the magnetic member 4 shown in FIGS. 8A and 8B) are used as the pattern (= pattern of the magnetic member 4) formed on the medium. Although the designable medium oriented under the influence of the magnetic field generated when used has been described, the pattern is not limited to this, and the curve, circle, ellipse, oval, polygon, character, code, these Any shape of these combinations may be used. For each of these patterns, the magnetic field generated upon application of the magnetic field changes and the orientation of the pigment also changes. Therefore, a desired pigment orientation can be realized by properly using various patterns. Further, the pigment is not limited to this embodiment, and other types of pigments may be used as long as the transmittance changes according to the change in orientation.

  Examples 6 and 7 will be described below as specific examples of the designable medium forming method and the designable medium of the third embodiment described above. The pigments used in the following Examples 6 and 7 are those shown in Table 2.

The composition (formulation) of the paint used in this example is shown below. A medium was formed using this paint and evaluated.
<Paint 1>
UV resin UV flexonis (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 1 part by weight Paint 1 having the above configuration is applied onto a PET sheet with a wire bar # 34, and the surface opposite to the coating surface remains wet. In a state where the magnetic field lines are curved in a strong magnetic field (1T) environment (for example, a position indicated by an arrow B in FIG. 8A) with a pattern made of Fe and Al in close contact with each other. The film was exposed for 5 minutes and then irradiated with UV to fix the coating.

  Then, when the formed designable medium is tilted and observed, as shown in FIGS. 10A and 10B, the belt-like gloss moves on the pattern surface and the other peripheral surfaces, respectively. Continuous color change was observed. Moreover, in this designable medium, when the cross section of aa 'and bb' shown to Fig.9 (a) was observed, respectively, the cross section of aa 'was shown in FIG.9 (d), It was recognized that the pigment had a tilted orientation, and the cross section bb ′ was a tilted orientation of the pigment as shown in FIG. 9 (e).

  Thus, according to the present Example, it became possible to perform 2 types of color tone changes in the coating film of 1 type 1 layer. In addition, it is possible to realize a designable medium having a unique color tone change that has not existed in the past by using a paint in which one kind of pigment is dispersed, without performing multilayer coating.

The composition (formulation) of each paint used in this example is shown below. Media were formed and evaluated using these paints.
<Paint 1>
UV resin UV flexonis (TOKA) 10 parts by weight Pigment A SECURE SHIFT (Flex Products) 1 part by weight Pigment B Iriodin 1 part by weight <Paint 2>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment A SECURE SHIFT (Flex Products) 1 part by weight <Paint 3>
UV resin UV flexonis (TOKA) 10 parts by weight Pigment B Magnetic pearl pigment (Merck) 1 part by weight Each of the paints 1 to 3 having the above-described configuration is coated on the PET sheet with a wire bar # 34 and applied in a wet state. A pattern made of Fe and Al was adhered to the work surface and the opposite surface, and exposed to a strong magnetic field (1T) environment for 5 minutes, and then UV irradiation was performed to fix the coating film and form a pattern. The results are shown in Table 4.

  Thus, according to this example, as a result of applying a magnetic field using a paint in which a pigment whose orientation changes in a strong magnetic field environment and a pigment whose orientation does not change, a pigment whose orientation does not change normally. Can also change the orientation. In addition, a unique pattern can be formed in a strong magnetic field environment using a paint in which two types of pigments having different anisotropic magnetic susceptibility are dispersed.

  In the present embodiment and the present example, the case where a bright pigment is used has been described. However, the present invention is not limited to this, and any other pigment may be used as long as the transmittance changes according to the change in orientation. These types of pigments may be used.

[Fourth Embodiment]
As a fourth embodiment of the present invention, a designable medium forming method and a designable medium will be described.
This embodiment is the same as the third embodiment in that after forming a coating layer on a substrate, the pigment is oriented in a predetermined direction for each predetermined portion of the coating layer. The embodiment is characterized in that a predetermined magnetic field is continuously applied to each predetermined portion of the coating layer when performing pigment orientation.

  First, the outline | summary of the apparatus for forming the designable medium of this embodiment is demonstrated with reference to figures. 12 to 15 are diagrams showing an outline of an apparatus for executing the designable medium method of the present embodiment and forming the designable medium of the present embodiment. FIG. 16 is a diagram showing the operation of a magnetizing yoke (same as that shown in FIG. 1) provided in this apparatus. FIG. 17 is a side sectional view schematically showing the orientation state of the pigment of the designable medium of the present embodiment. In the present embodiment, a PET film is used as the base material 5b (the same paint as that in the above embodiments is used for forming the coating film 5a).

  As shown in FIGS. 12 to 15, this apparatus includes a roll unit 6 a that feeds a pre-wound base material, and a coating unit 7 that coats the base material to form a coating film 5 a (coating layer). Formed by applying a magnetic field to the coating film 5a and magnetizing yokes 1 and 2 for orienting the pigment in the coating film 5a, UV irradiation part (ultraviolet irradiation part) 8 for irradiating and curing the coating film with ultraviolet light, and curing the coating film The roll part 6b which winds up the designed design medium is provided. In this apparatus, the base material 5b fed from the roll unit 6a is coated with the coating film 5a by the coating unit 7, the pigment of the coating film is oriented by the magnetizing yokes 1 and 2, and is coated by the UV irradiation unit 8. The film is cured and becomes a designable medium and is stored in the roll portion 6b. In this apparatus, a magnetic field is applied by the magnetizing yokes 1 and 2 to align the pigment, and then the UV irradiation unit 8 performs ultraviolet irradiation. The UV irradiation unit 8 may be arranged so that ultraviolet irradiation can be performed as it is.

  Here, the operation of the magnetizing yokes 1 and 2 of this apparatus will be described with reference to FIG. The magnetizing yokes 1 and 2 of this apparatus are the same as those shown in FIGS. 1B and 1C described in the first embodiment.

  As shown in FIG. 16, it is assumed that a virtual axis exists at a predetermined position in a three-dimensional space including an XY plane, a YZ plane, and an XZ plane. The magnetizing yoke 1 and the magnetizing yoke 2 are disposed, for example, at positions symmetrical with respect to an axis A orthogonal to the XY plane, and can rotate 360 ° clockwise or counterclockwise around the axis A. is there. Similarly, in the case of the other axes B, C, and D, the magnetizing yokes 1 and 2 move to positions symmetrical with respect to the respective axes, and 360 ° clockwise or counterclockwise around the axes. Rotate. The virtual axis is not limited to that shown in FIG.

  The designable medium forming method of the present embodiment using the above apparatus will be described in detail with reference to FIGS. 12 to 15 and FIG. In the following description, as an example, different magnetic fields are successively applied to each of the four portions of the coating film 5a.

  In FIG. 12, a base material (PET film) 5b is wound around a roll portion 6a in advance, and when the apparatus starts to operate, the roll portion 6a is driven by a driving means (not shown) and wound in advance. The base material 5b is sent out in the direction of the arrow in the figure. In this apparatus, the base material 5b moves in the direction of the arrow in the figure at a predetermined speed.

Next, in FIG. 12, the coating part 7 has the glitter property which has a magnetic anisotropy whose mass magnetic susceptibility is 10 ⁻⁶ m ³ / kg or less with respect to one surface of the substrate 5b fed from the roll part 6a. A paint in which a pigment is dispersed in a solvent-free resin is applied. Thereby, the coating film 5a is formed and becomes the medium 5 (step S21 in FIG. 19). The pigment in the coating film 5a at this time is in a substantially horizontal state shown in FIG. In the description here, the anisotropic magnetic susceptibility of the pigment is a positive (+) value.

  Next, in FIG. 12, the magnetized yokes 1 and 2 generate magnetic field lines 3 to form a magnetic field. At this time, the magnetized yokes 1 and 2 form a vertical magnetic field shown in FIG. FIG. 12A is a perspective view showing a state of the magnetizing yokes 1 and 2 and the medium 5 at this time. The medium 5 moves in a magnetic field formed by linear and substantially linear portions of the magnetic force lines 3e to 3i shown in FIG. 1C, or stops for a predetermined time in the magnetic field. Thereby, as shown in FIG.2 (b), the pigment component 14 in the coating film 5a is orientated to the orthogonal | vertical direction with respect to the base material 5b (step S22 of FIG. 19).

  Next, as shown in FIG. 13, the medium 5 in which the pigment is oriented by the magnetizing yokes 1 and 2 leaves the magnetic field and moves in the direction of the arrow in the figure. FIG. 13A shows a coating film (hereinafter referred to as coating film 10) in which the pigment is vertically aligned in the medium 5. At this time, in the medium 5, the coating film following the coating film 10 is pigment-oriented by the magnetizing yokes 1 and 2. The magnetizing yokes 1 and 2 are rotated from the arrangement for forming the vertical magnetic field shown in FIG. 12, and are arranged to form the horizontal magnetic field shown in FIG. 1B as shown in FIG. FIG. 13A is a perspective view showing a state of the magnetizing yokes 1 and 2 and the medium 5 at this time. The medium 5 moves in the magnetic field formed by the linear portion of the magnetic force lines 3g shown in FIG. 1B, or stops for a predetermined time in the magnetic field. Thereby, as shown in FIG.2 (c), the pigment component 14 in the coating film 5a is orientated in the uniform horizontal direction with respect to the base material 5b (step S23 of FIG. 19).

  Next, in the medium 5, as shown in FIG. 14B, when a coating film in which the pigment is horizontally oriented (hereinafter referred to as coating film 11) moves out of the magnetic field, the coating film following the coating film 11 is moved. The pigment is oriented by the magnetizing yokes 1 and 2. The magnetized yokes 1 and 2 are rotated from the arrangement for forming the vertical magnetic field shown in FIG. 13 and become an oblique arrangement inclined toward the roll portion 6b as shown in FIG. The medium 5 moves in a magnetic field formed by linear and substantially linear portions of the magnetic force lines 3e to 3i shown in FIG. 1C, or stops for a predetermined time in the magnetic field. Thereby, as shown in FIG. 17A, the pigment component 14 in the coating film 5a is oriented in an oblique direction inclined toward the roll portion 6b (step S24 in FIG. 19). Further, at this time, the coating film 10 previously pigment-oriented reaches the arrangement position of the UV irradiation unit 8 as shown in FIG. 14, and the UV irradiation unit 8 irradiates the coating film 10 with ultraviolet rays. Thereby, the coating film 10 hardens | cures (step S24 of FIG. 19).

  Next, in the medium 5, as shown in FIG. 15 (c), when a coating film (hereinafter referred to as the coating film 12) in which the pigment is tilted in the direction of the roll portion 6b and obliquely moved moves out of the magnetic field, The coating film following the film 12 is pigment-oriented by the magnetizing yokes 1 and 2. The magnetized yokes 1 and 2 rotate from the arrangement shown in FIG. 14 and become an oblique arrangement inclined in the direction of the roll portion 6a as shown in FIG. The medium 5 moves in a magnetic field formed by linear and substantially linear portions of the magnetic force lines 3e to 3i shown in FIG. 1C, or stops for a predetermined time in the magnetic field. Thereby, as shown in FIG.17 (b), the pigment component 14 in the coating film 5a is orientated in the diagonal direction inclined in the roll part 6a direction (step S25 of FIG. 19). At this time, the coating film 11 previously pigment-oriented reaches the arrangement position of the UV irradiation unit 8 as shown in FIG. 15, and the UV irradiation unit 8 irradiates the coating film 11 with ultraviolet rays. Thereby, the coating film 11 hardens | cures (step S25 of FIG. 19).

  Thereafter, although not shown, in the same manner as described above, the coating film 12 shown in FIG. 15C and a coating film in which the pigment is inclined obliquely in the direction of the roll portion 6a (hereinafter referred to as coating film 13). ) Is also irradiated with ultraviolet rays by the UV irradiation unit 8 and cured (steps S26 and S27 in FIG. 19).

After the ultraviolet irradiation, the medium 5 is wound and stored on the roll 6b.
The above is the designable medium forming method of the present embodiment.

  Next, the designable medium formed by the designable medium forming method of the present embodiment will be described. FIG. 18 is a diagram illustrating an example of the designable medium according to the present embodiment. FIG. 18A is a side sectional view schematically illustrating the designable medium formed by the designable medium forming method according to the present embodiment. And (b) and (c) are top views showing an example of the design of the designable medium shown in (a).

  As shown in FIG. 18A, the designable medium 30 of the present embodiment has a coating film 10 in which the pigment is oriented in the vertical direction (see FIG. 2B) from the left, and the pigment is oriented in the horizontal direction. The coating film 11 (see FIG. 2 (c)), the coating film 12 in which the pigment is oriented in an oblique direction from the upper left to the lower right (see FIG. 17 (a)), and the pigment is oriented in the oblique direction from the upper right to the lower left. The coated films 13 are formed so as to be adjacent to each other in this order (see FIG. 17B). When the incident light L is applied to the surface of the designable medium 30 as shown in FIG. 2A, a different color tone can be obtained for each of the portions 10 to 13. That is, the coating film 10 has a color tone greatly different from the color tone normally obtained, and the coating film 11 has a more vivid color tone than the orientation of the pigment having magnetic anisotropy just applied. Moreover, since the coating film 12 and the coating film 13 can reflect not only incident light from the surface of the designable medium but also incident light from the side of the medium (see FIGS. 17A and 17B), On the surface of the designable medium, a color tone change due to reflection of light from the side surface of the medium can be obtained.

  As an example of the design medium, as shown in FIG. 18B, when the background coating film 15 and the character coating films 16, 17, 18, 19 are formed on the surface of the design medium, for example, a predetermined medium is used. After the coating material is applied to the base material 5b and the background coating film 15 is provided, the coating film is cured by ultraviolet irradiation without preparing the pigment, and the preparation medium forming method of this embodiment is prepared. By applying the paint used in the present embodiment to the base material on which the background coating film 15 has been formed in a character pattern of “A”, “B”, “C”, “D”. Coating films 16 to 19 are provided, and for each of these character coating films 16 to 19, pigment orientation is performed in each coating film as indicated by 10 to 13 in FIG. 18A, and the coating films 16 to 19 are cured by ultraviolet irradiation. To do. Thereby, a different color tone can be obtained by the background coating film 15 and the character coating films 16-19, and also a different color tone can be obtained by the character coating films 16-19.

  As an example of the designable medium, as shown in FIG. 18C, on the surface of the designable medium, the black square coating films 20, 21, 22, 23 and the white square coating films 24, 25, 26, 27 are provided. In the case of forming a lattice pattern, for example, the paint used in the present embodiment is applied to the substrate with the lattice pattern by the designable medium forming method of the present embodiment to form a black square coating film 20-23. Then, for each black square coating film 20 to 23, pigment orientation is performed in each coating film as shown in 10 to 13 of FIG. 18A, and the coating film is cured by ultraviolet irradiation. After that, the paint used in the present embodiment is applied in a lattice pattern to the base material previously provided with the black square coating films 20 to 23 by the designable medium forming method of the present embodiment again. The white square coating films 24 to 27 are provided, and the white square coating films 24 to 27 are provided for the respective white coating films 24 to 27 as shown by 13 to 10 in FIG. The pigment is oriented (in order) and the coating is cured by UV irradiation. As a result, the black square coating films 20, 21, 22, and 23 have pigment orientations corresponding to 10, 11, 12, and 13 in FIG. 18 (a), respectively, and the white square coating films 24, 25, and 26, respectively. , 27 are pigment orientations corresponding to 13, 12, 11, and 10 in FIG. Therefore, a different color tone can be obtained for each portion of the lattice pattern, and furthermore, different color tones can be obtained in the same color coating films (black square coating films 20 to 23 and white square coating films 24 to 27). it can.

  In the above description, the orientation order and orientation direction of the pigment in the medium 5 are the coating films 10, 11, 12, and 13, but the invention is not limited to this.

  In the above description, the magnetic field application is performed in the linear (or almost linear) portion of the magnetic field lines during the pigment orientation. However, the above description is made with reference to FIGS. 3 (a) and 4 (a). As described, the magnetic field application may be performed at the curved portion of the magnetic field lines. As a result, the magnetizing yoke can be tilted to a predetermined angle and a magnetic field can be applied at the curved portion of the lines of magnetic force, so that the pigment can be oriented more finely and freely.

  In the above description, the magnetizing yoke is rotated when the pigment is oriented, but the magnetizing yoke may be fixed and the medium itself provided with the coating film may be rotated and moved.

[Fifth Embodiment]
As a fifth embodiment of the present invention, a designable medium forming method and a designable medium will be described.
In the first to fourth embodiments, the coating material is applied to the base material to provide a single coating layer. However, in the present embodiment, a plurality of coatings are formed on a single base material. The layer is formed in a predetermined pattern shape. That is, a plurality of patterns of coating layers having different color tones are formed on the same surface of the substrate (this embodiment is an example described in FIGS. 18B and 18C in the fourth embodiment). This is a modification example). Therefore, according to this embodiment, since a different color tone change is obtained for each of the plurality of coating layers, a plurality of color tones can be realized in one medium.

  As examples of the designable medium forming method of the present embodiment, two examples shown in FIGS. 21 and 22 will be described below.

First, as shown in FIG. 21, a method for forming a designable medium (designable medium) having a magnetic anisotropy with a mass magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less. A first coating layer forming step of forming a first coating layer by applying a paint in which a pigment is dispersed in a resin in a predetermined pattern to form a first coating layer (step S31); The medium in which the working layer is formed is placed in a magnetic field of 0.3 Tesla or more, and a pigment orientation step for orienting the pigment in the first coating layer (Step S32), while the magnetic field is applied or the magnetic field is applied And after applying the first coating layer curing step (step S33) for curing the first coating layer after orienting the pigment, the mass magnetic susceptibility is 10 ⁻⁶ m on the same substrate. the substrate ³ / kg or less of a pigment was dispersed in a resin coating material having a magnetic anisotropy in a predetermined pattern A second coating layer forming step of forming a second coating layer by coating (step S34), and a medium having the second coating layer formed on the substrate in a magnetic field of 0.3 Tesla or more. And a second pigment orientation step for orienting the pigment in the second coating layer (step S35), with the magnetic field applied or after applying the magnetic field to orient the pigment. And a second coating layer curing step (step S36) for curing the construction layer.

Next, as shown in FIG. 22, the second method is a method for forming a designable medium (designable medium), which has a magnetic anisotropy with a mass magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less. A first coating layer forming step of forming a first coating layer by coating a base material in a predetermined pattern with a paint in which a pigment having a resin is dispersed in a predetermined pattern (step S41); A second coating layer is formed by coating a base material in a predetermined pattern with a paint in which a pigment having magnetic anisotropy having a magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less is dispersed in a resin. The coating layer forming step (step S42) and the medium on which the first coating layer and the second coating layer are formed are placed in a magnetic field of 0.3 Tesla or more, and the first coating layer and the first coating layer A pigment orientation step for orienting the pigment in the coating layer 2 (step S43), with the magnetic field applied or with the magnetic field applied After to align the pigment of Ryonuriko layer, the first coating layer and the coating layer cured curing the second coating layer (step S44), and characterized by performing the.

  In the above two examples, the plurality of coating layers formed in the first and second coating layer forming steps may be applied such that at least a part of the coating layers overlap each other.

  In the above, the plurality of coating layers formed in the first and second coating layer forming steps may be formed of the same paint, or the pigment type and the pigment You may make it each form with the coating material from which at least 1 differs among ratios.

  In the present embodiment, the structure of the medium (base material, paint, pigment) formed in the coating layer forming step, the magnetic field application method and the magnetic field application device in the pigment orientation step, the coating layer curing step As the ultraviolet irradiation method and the apparatus for performing ultraviolet irradiation, those described in the first to fourth embodiments are applied, and description thereof is omitted here.

  Hereinafter, Examples 8 to 16 will be described as specific examples of the designable medium forming method and the designable medium of the present embodiment. In addition, about each pigment used in the following Examples 8-16, it is shown in Table 2.

The composition (formulation) of the paint used in this example is shown below.
<Paint 1>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 1 part by weight First, as shown in FIG. 20 (a), 5 mm line and space on a PET sheet 5b as a substrate. The first coating layer 60 having a 5 mm line-and-space stripe pattern was formed by applying the paint 1 having the above-described structure by silk printing using a plate having a stripe pattern of 5 mm. A longitudinal magnetic field was applied to the first coating layer 60 to align the pearl pigment, and then UV irradiation was applied to the first coating layer 60 to fix the pigment orientation.

  Next, as shown in FIG. 20B, on the PET sheet 5b, the coating 1 and the stripe pattern plate are applied to the unprinted portion 61 between the first coating layers 60 formed previously. Then, a second coating layer 70 having a 5 mm line and space stripe pattern is formed, and a transverse magnetic field is applied to the second coating layer 70 to perform orientation of the pearl pigment. Thereafter, the second coating layer 70 was irradiated with UV to fix the orientation of the pigment.

  In the designable medium of this example formed in this way, the first coating layer 60 to which a longitudinal magnetic field is applied becomes a red bean color, and the second coating layer 70 to which a transverse magnetic field is applied changes from a red bean to blue. It was.

The configurations of the paint 1 and the paint 2 used in this example are shown below.
<Paint 1>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 1 part by weight <Paint 2>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 3 parts by weight

  First, as shown in FIG. 20 (a), the paint 1 having the above-described configuration is applied by silk printing on a PET sheet 5b as a base material using a 5mm line-and-space stripe pattern plate. A first coating layer 60 having a 5 mm line and space stripe pattern was formed.

  Next, as shown in FIG. 20B, on the PET sheet 5b, the unpainted portion 61 between the previously formed first coating layer 60 is coated with the paint 2 having the above-described configuration and the stripe pattern. A second coating layer 70 having a 5 mm line and space stripe pattern was formed using a plate.

  Then, a longitudinal magnetic field was simultaneously applied to both the first coating layer 60 and the second coating layer 70 to orient the pearl pigment, and UV irradiation was performed to fix the pigment orientation. That is, in this embodiment, a magnetic field is not applied after the formation of the first coating layer 60, and a magnetic field is applied to both the coating layers 60 and 70 simultaneously after the formation of the second coating layer 70.

  The designable medium of the present example formed in this way has a difference in light and shade even in the same red bean color between the first coating layer 60 formed of the paint 1 and the second coating layer 70 formed of the paint 2. It was.

The configurations of the paint 1 and the paint 2 used in this example are shown below.
<Paint 1>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 1 part by weight <Paint 2>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 3 parts by weight

  First, as shown in FIG. 20 (a), the paint 1 having the above-described configuration is applied by silk printing on a PET sheet 5b as a base material using a 5mm line-and-space stripe pattern plate. A first coating layer 60 having a 5 mm line and space stripe pattern was formed. A longitudinal magnetic field was applied to the first coating layer 60 to align the pearl pigment, and then UV irradiation was applied to the first coating layer 60 to fix the pigment orientation.

  Next, as shown in FIG. 20B, on the PET sheet 5b, the unpainted portion 61 between the previously formed first coating layer 60 is coated with the paint 2 having the above-described configuration and the stripe pattern. The plate is used to form a second coating layer 70 having a 5 mm line-and-space stripe pattern, and this time, a transverse magnetic field is applied to the second coating layer 70 to align the pearl pigment. After that, UV irradiation was performed on the second coating layer 70 to fix the orientation of the pigment.

  In the designable medium of this example formed in this way, the color tone of each stripe pattern (the first coating layer 60 and the second coating layer 70) became clearer than in Example 8.

The configuration of the paint 1 used in this example is shown below.
<Paint 1>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 1 part by weight

  First, as shown in FIG. 20 (a), the paint 1 having the above-described configuration is applied by silk printing on a PET sheet 5b as a base material using a 5mm line-and-space stripe pattern plate. A first coating layer 60 having a 5 mm line and space stripe pattern was formed. A longitudinal magnetic field was applied to the first coating layer 60 to align the pearl pigment, and then UV irradiation was applied to the first coating layer 60 to fix the pigment orientation.

  Next, as shown in FIG. 20B, on the PET sheet 5b, the coating 1 and the stripe pattern plate are applied to the unprinted portion 61 between the first coating layers 60 formed previously. The second coating layer 70 having a 5 mm line-and-space stripe pattern is formed, and the second coating layer 70 is now subjected to an oblique magnetic field (the diagram in the fourth embodiment). 15 and FIG. 16), the orientation of the pearl pigment was performed, and then the second coating layer 70 was irradiated with UV to fix the orientation of the pigment.

  The designable medium of this example formed in this way has a stripe pattern boundary (boundary between the first coating layer 60 and the second coating layer 70) more than in Example 8 when viewed from the vertical direction. Cannot be seen clearly, but when viewed from an oblique angle, it looks the same as in Example 8.

The configuration of the paint 1 used in this example is shown below.
<Paint 1>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 1 part by weight

  First, as shown in FIG. 20 (a), the paint 1 having the above-described configuration is applied by silk printing on a PET sheet 5b as a base material using a 5mm line-and-space stripe pattern plate. A first coating layer 60 having a 5 mm line and space stripe pattern was formed. A longitudinal magnetic field was applied to the first coating layer 60 to align the pearl pigment, and then UV irradiation was applied to the first coating layer 60 to fix the pigment orientation.

  Next, as shown in FIG. 20B, on the PET sheet 5b, the coating 1 and the stripe pattern plate are applied to the unprinted portion 61 between the first coating layers 60 formed previously. The second coating layer 70 having a 5 mm line-and-space stripe pattern is formed, and this time, the second coating layer 70 has a curved magnetic field (the diagram in the first embodiment). 3 and FIG. 4), the pearl pigment was oriented, and then the second coating layer 70 was irradiated with UV to fix the orientation of the pigment.

  The designable medium of this example formed in this way has a stripe pattern boundary (boundary between the first coating layer 60 and the second coating layer 70) more than in Example 8 when viewed from the vertical direction. However, when the medium was moved, the blue portion of the second coating layer 70 to which the curvilinear magnetic field was applied moved in the reddish brown color (only the portion where the specular reflection was located appears blue).

The configurations of the paint 1 and the paint 2 used in this example are shown below.
<Paint 1>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 1 part by weight <Paint 2>
UV resin UV flexonis (TOKA) 10 parts by weight Pigment Iriodin524 (Merck) 1 part by weight

  First, as shown in FIG. 20 (a), the paint 1 having the above-described configuration is applied by silk printing on a PET sheet 5b as a base material using a 5mm line-and-space stripe pattern plate. A first coating layer 60 having a 5 mm line and space stripe pattern was formed. A longitudinal magnetic field was applied to the first coating layer 60 to align the pearl pigment, and then UV irradiation was applied to the first coating layer 60 to fix the pigment orientation.

  Next, as shown in FIG. 20B, on the PET sheet 5b, the unpainted portion 61 between the previously formed first coating layer 60 is coated with the paint 2 having the above-described configuration and the stripe pattern. The plate is used to form a second coating layer 70 having a 5 mm line-and-space stripe pattern, and this time, a transverse magnetic field is applied to the second coating layer 70 to align the pearl pigment. After that, UV irradiation was performed on the second coating layer 70 to fix the orientation of the pigment.

  The designable medium of this example formed in this way was a striped pattern of red beans (first coating layer 60) and brown (second coating layer 70). When the pearl pigment dispersed in each coating layer was observed with an electron microscope, both pigments were oriented in the longitudinal direction despite changing the direction of the magnetic field.

The configurations of the paint 1 and the paint 2 used in this example are shown below.
<Paint 1>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 1 part by weight <Paint 2>
UV resin UV flexonis (TOKA) 10 parts by weight Pigment Iriodin524 (Merck) 1 part by weight

  First, as shown in FIG. 20 (a), the paint 1 having the above-described configuration is applied by silk printing on a PET sheet 5b as a base material using a 5mm line-and-space stripe pattern plate. A first coating layer 60 having a 5 mm line and space stripe pattern was formed.

  Next, as shown in FIG. 20B, on the PET sheet 5b, the unpainted portion 61 between the previously formed first coating layer 60 is coated with the paint 2 having the above-described configuration and the stripe pattern. A second coating layer 70 having a 5 mm line and space stripe pattern was formed using a plate.

  Then, a longitudinal magnetic field was simultaneously applied to both the first coating layer 60 and the second coating layer 70 to orient the pearl pigment, and UV irradiation was performed to fix the pigment orientation. That is, in this embodiment, a magnetic field is not applied after the formation of the first coating layer 60, and a magnetic field is applied to both the coating layers 60 and 70 simultaneously after the formation of the second coating layer 70.

  The designable medium of this example formed in this way was a red stripe having a red bean color (first coating layer 60) and a metallic luster (second coating layer 70). When the pearl pigment dispersed in each coating layer was observed with an electron microscope, the orientation direction differed depending on the pigment, although it was oriented in the same magnetic field.

The configuration of the paint 1 used in this example is shown below.
<Paint 1>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 1 part by weight

  First, as shown in FIG. 20 (c), the paint 1 having the above-described configuration is applied by silk printing on a PET sheet 5b as a base material using a 5 mm line and space stripe pattern plate. A first coating layer 60 having a 5 mm line and space stripe pattern was formed. A pearl pigment was oriented by applying a transverse magnetic field to the first coating layer 60, and then UV irradiation was performed on the first coating layer 60 to fix the orientation of the pigment.

  Next, as shown in FIG. 20 (d), 5 mm so as to be orthogonal to the first coating layer 60 previously formed on the PET sheet 5b by using the coating material 1 and the stripe pattern plate. A second coating layer 70 having a line and space stripe pattern is formed, and a longitudinal magnetic field is applied to the second coating layer 70 to apply the pearl pigment. The second coating layer 70 was irradiated with UV to fix the orientation of the pigment.

  In the designable medium of this example formed in this way, the first coating layer 60 to which a transverse magnetic field was applied changed from red beans to blue, and the second coating layer 70 to which a vertical magnetic field was applied became red beans. . As for the color of the portion 80 where the coating layers overlap, since the pigment in the second coating layer located above is oriented vertically, the color of the first coating layer located below is also bluish I was able to see it.

The configurations of the paint 1 and the paint 2 used in this example are shown below.
<Paint 1>
UV resin UV flexonis (TOKA) 10 parts by weight Pigment Iriodin524 (Merck) 1 part by weight <Paint 2>
UV resin UV flexonics (TOKA) 10 parts by weight Pigment Infinite R-08 (Shiseido) 1 part by weight

  First, as shown in FIG. 20 (c), the paint 1 having the above-described configuration is applied by silk printing on a PET sheet 5b as a base material using a 5 mm line and space stripe pattern plate. A first coating layer 60 having a 5 mm line and space stripe pattern was formed. A longitudinal magnetic field was applied to the first coating layer 60 to align the pearl pigment, and then UV irradiation was applied to the first coating layer 60 to fix the pigment orientation.

  Next, as shown in FIG. 20 (d), on the PET sheet 5b, the coating 2 having the above-described configuration and the stripe pattern plate are used so as to be orthogonal to the first coating layer 60 previously formed. A second coating layer 70 having a 5 mm line and space stripe pattern is formed on the second coating layer 70, and then a longitudinal magnetic field is applied to the second coating layer 70 to align the pearl pigment. The second coating layer 70 was irradiated with UV to fix the orientation of the pigment.

  In the designable medium of this example formed in this way, the first coating layer 60 was metallic glossy red, and the second coating layer 70 was reddish brown. As for the color of the portion 80 where the coating layers overlap, since the pigment in the second coating layer located above is oriented vertically, the color of the first coating layer located below is also red. I was able to see it.

  As described above, according to Examples 8 to 16 of the present invention, different color tone changes can be realized in the first coating layer and the second coating layer.

  In Examples 8 to 16, the pattern is a stripe pattern. However, the present invention is not limited to this. For example, characters such as those shown in FIGS. 18B and 18C in the fourth embodiment, It may be a pattern.

  In Examples 8 to 16 described above, two patterns (first coating layer and second coating layer) are formed on the medium. However, three or more coating layers are formed. May be. For example, when three coating layers are formed, as shown in FIG. 20 (e), in the medium 5 shown in FIG. 20 (b), a third coating layer 90 (the letter “N”) is further added. It is formed using a predetermined paint, and the pigment of the third coating layer 90 is oriented. Thereby, in the formed three coating layers, a different color tone can be obtained, respectively.

[Sixth Embodiment]
As a sixth embodiment of the present invention, a designable medium forming method and a designable medium will be described.
Conventionally, an ultraviolet curable resin having a low viscosity (500 mPa · s or less) was used as an ultraviolet curable resin so that the pigment can move easily (see, for example, JP-A-7-265786). Since the pigment moves before the production, it is difficult to form a designable medium by the production line.

  If the material has magnetic anisotropy in a strong magnetic field environment, even a paramagnetic material or a diamagnetic material can be oriented. One condition that facilitates the orientation is the viscosity of the paint. If the viscosity is 500 mPa · s or less, the orientation becomes easy, but if the medium is removed from the magnetic field environment, the orientation state is lost (the orientation state cannot be maintained). On the contrary, if the viscosity of the paint is increased, the alignment itself becomes difficult (it takes time). In order to eliminate this point, by adding fine particles such as glass beads to a low-viscosity paint of 500 mPa · s or less, the original state can be maintained for a certain time even if the medium is removed from the strong magnetic field environment. It becomes possible, and medium formation by a production line becomes easy.

  Therefore, in this embodiment, the coating material used in the first to fifth embodiments contains fine particles, and this coating material is applied to form a coating layer, and a magnetic field is applied to the coating layer to apply the pigment. It is characterized by being oriented and curing the coating layer.

  Therefore, according to the present embodiment, the pigment oriented in the substantially vertical direction by the magnetic field enters the gap between the fine particles, and the state is maintained for a certain time even when the medium is removed from the magnetic field. Since a process for solidifying the paint outside the magnetic field can be introduced within this fixed time, it is easy to form a medium on the production line.

The method for forming the designable medium of the sixth embodiment is the same as that of the first embodiment. That is, as shown in FIG. 6, a coating material in which a pigment having a magnetic anisotropy having a mass magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less is dispersed in a resin is applied to a substrate to form a coating layer. A coating layer forming step (step S1), a medium in which the coating layer is formed on the substrate is placed in a magnetic field of 0.3 Tesla or more, and a pigment orientation step for orienting the pigment in the coating layer (step S2). And a coating layer curing step (step S3) in which the coating layer is cured while the magnetic field is applied or after the pigment is oriented by applying the magnetic field. This embodiment is different from the first embodiment in that a coating material for forming a coating layer in the coating layer forming step S1 is added with fine particles. Hereinafter, details of the designable medium forming method of the present embodiment will be described.

In the present embodiment, as in the first embodiment, first, in the coating layer forming step S1, a paint is applied to one surface of the base material (for example, a nonmagnetic material such as resin, paper, ceramic, etc.) 5b. Is applied to form a coating film (coating layer) 5a to form a medium 5 (see FIG. 1A). This paint is a paint in which a glitter pigment mainly composed of a diamagnetic material such as mica, silica, and alumina is uniformly dispersed in a solvent-free low-viscosity curable resin. It has a magnetic susceptibility and magnetic anisotropy of a rate of 10 ⁻⁶ m ³ / kg or less. Examples of materials having a mass magnetic susceptibility of 10 ⁻⁶ m ³ / kg or less include paramagnetic materials and diamagnetic materials. Moreover, in order to maintain the pigment oriented in a predetermined direction in the coating material for a predetermined time, use is made of glass paint (diameter 10 μm) added as fine particles.

  FIG. 23 shows a side sectional view of the medium 5 on which the coating film 5a is formed. As shown in FIG. 23, glass beads 9 are added in the coating film 5a. In FIG. 23, the pigment (pigment component) 14 is in a substantially horizontal state since it is before application of a magnetic field.

  Although the specific gravity of the glass beads is larger than the specific gravity of the pigment in the present embodiment, the present invention is not limited to this, and the specific gravity of the glass beads may be smaller or equal to the specific gravity of the pigment. Moreover, the viscosity of the coating film 5a is 500 mPa * s or less. The pigment is not particularly limited as long as it is oriented under the influence of a magnetic field.

  Next, details of the pigment orientation step S2 will be described below. In this description, it is assumed that the anisotropic magnetic susceptibility of the pigment is a positive (+) value, and that the medium 5 shown in FIG. 23 is applied with a perpendicular magnetic field shown in FIG.

  As shown in FIG. 1C, the medium 5 is horizontally disposed between the magnetizing yokes 1 and 2 of an electromagnet for generating a magnetic field (0.3 T or more) so that the substrate 5b faces downward. When the viscosity of the coating film 5a is 500 mPa · s or less and the specific gravity of the glass beads 9 is larger than the specific gravity of the pigment, the glass beads 9 are formed as time passes after the coating film 5a is formed, as shown in FIG. The pigment 14 sinks so as to be folded over the surface.

  When magnetic lines of force are formed between the magnetized yokes 1 and 2 by energizing the electromagnet, a large number of magnetic lines 3a to 3m are generated between the magnetized yokes 1 and 2 (see FIG. 1C). Then, as shown in FIG. 24 (b), when four magnetic force lines 3e, 3f, 3g, and 3h of these magnetic force line groups pass through the medium 5 (in the vertical direction in the figure), each pigment 14 is transferred. Oriented in the direction of magnetic field lines (directions of arrows in the figure).

  Since the viscosity of the coating layer 5a is a low viscosity of 500 mPa · s or less, each pigment 14 is in a state of being easily moved, and each pigment 14 is immediately horizontal ( Orientation (vertical orientation) from the horizontal orientation to the vertical direction all at once. And as shown in FIG.24 (c), each pigment 14 will be in the state which stabs into the clearance gap between the glass beads 9 by orienting in a perpendicular direction.

  When energization of the electromagnet is stopped, the magnetic lines of force 3a to 3m between the magnetized yokes 1 and 2 disappear. When the magnetic lines of force 3e, 3f, 3g, and 3h disappear, each pigment 14 tends to return from an unstable vertical orientation to a stable horizontal orientation due to the influence of gravity. However, as described above, since the pigments 14 oriented in the vertical direction are sandwiched between the glass beads 9, in the present embodiment, the pigments 14 are sandwiched between the glass beads 9. , It is held for a certain time (for example, about 0.1 to 30 seconds).

  For this reason, even if the medium 5 oriented by the magnetic force lines 3e, 3f, 3g, and 3h is removed from the magnetic force lines 3e, 3f, 3g, and 8h, the state is preserved for a certain period of time. A step of curing the film 5a by irradiating with ultraviolet rays can be provided. Therefore, according to the present embodiment, the medium can be easily formed by the production line.

  In the above description, the glass beads were oriented by applying a magnetic field when the glass beads in the coating layer were settled on the substrate, but as another example, when the specific gravity of the glass beads is larger than the specific gravity of the pigment May precipitate the pigment and the glass beads while applying a magnetic field to the medium. This will be described below.

  As shown in FIG. 1C, the magnetic field (0...) Is such that the magnetic lines of force 3e, 3f, 3g, and 3h intersect the medium 5 in which the substrate 5b is disposed between the magnetizing yokes 1 and 2 (vertical direction in the figure). When 3T or more) is applied, as shown in FIG. 25A, the pigments 14 are oriented in the vertical direction along the magnetic lines 3e, 3f, 3g, and 3h (see FIG. 1C).

  Since the specific gravity of the glass beads 9 as fine particles is larger than the specific gravity of the pigment 14 and the coating film 5a has a low viscosity of 500 mPa · s or less, the glass beads 9 are more than the pigment 14 as shown in FIG. First, it settles toward the substrate 5b.

  After the glass beads 9 arrive on the substrate 5b, the pigment 14 also arrives, but since the pigment 14 is oriented in the vertical direction, it is inserted into the gap between the glass beads 9 as shown in FIG. To settle. In this state, even if the magnetic field is removed from the medium 5 (or the medium 5 is removed from the magnetic field) or the electromagnet is turned off, the pigment 14 is inserted into the gap between the glass beads 9, so that the pigment 14 The orientation of the pigment 14 is maintained by being supported by the glass beads 9. For this reason, since a state is preserve | saved only for a fixed time (about 0.1 second-30 second), the process of irradiating the ultraviolet-ray to the coating film 5a and hardening can be provided. Therefore, medium formation by the production line is facilitated.

Next, the case where the specific gravity of the glass beads is smaller than the specific gravity of the pigment will be described.
As shown in FIG. 1C, the magnetic field (0...) Is such that the magnetic lines of force 3e, 3f, 3g, and 3h intersect the medium 5 in which the substrate 5b is disposed between the magnetizing yokes 1 and 2 (vertical direction in the figure). When 3T or more) is applied, as shown in FIG. 26A, the pigments 14 are oriented in the vertical direction along the magnetic lines 3e, 3f, 3g, and 3h (see FIG. 1C).

  Since the specific gravity of the pigment 14 is larger than the specific gravity of the glass beads 9 and the coating film 5a has a low viscosity of 500 mPa · s or less, the pigment 14 is placed on the substrate before the glass beads 9 as shown in FIG. Sedimentation toward 5b.

  After the pigment 14 reaches the substrate 5b, the glass beads 9 also arrive. However, since the pigment 14 is oriented in the vertical direction, the glass beads 9 are interposed between the pigments 14 as shown in FIG. It sinks so as to be inserted into the gap. In this state, even if the magnetic field is removed from the medium 5 (or the medium 5 is removed from the magnetic field) or the electromagnet is turned off, the pigment 14 is inserted into the gap between the glass beads 9, so that the pigment 14 The orientation of the pigment 14 is maintained by being supported by the glass beads 9. For this reason, since a state is preserve | saved only for a fixed time (about 0.1 second-30 second), the process of irradiating the ultraviolet-ray to the coating film 5a and hardening can be provided. Therefore, medium formation by the production line is facilitated.

  Hereinafter, Examples 17 and 18 will be described as specific examples of the designable medium forming method and the designable medium of the present embodiment. The pigments used in Examples 17 and 18 below are those shown in Table 2.

Coated with PET wire bar # 34 on a PET sheet, exposed to a strong magnetic field (for example, 5T) for 5 minutes in a wet state, and applied a magnetic field in the horizontal magnetic field shown in FIG. It was.
After that, UV was irradiated between the magnetized yokes 1 and 2 and fixed.
Taken from between the magnetized yokes 1 and 2 and allowed to stand for 1 minute and fixed ...... B
Immediately after coating the wire bar (blank) …… C
The orientation states of the pigments in A, B, and C were observed.

The medium 5 was formed and evaluated using the materials shown below.
UV resin UV flexonics (TOKA) 5 parts by weight Pigment Iriodin524 (Merck) 1 part by weight Fine glass beads EMB-5 (Potters-Ballotini) 1 part by weight

Coated with PET wire bar # 34 on a PET sheet, exposed to a strong magnetic field (for example, 5T) for 5 minutes in a wet state, and applied a magnetic field in the horizontal magnetic field shown in FIG. It was.
After that, UV was irradiated between the magnetized yokes 1 and 2 and fixed.
Taken from between the magnetized yokes 1 and 2 and allowed to stand for 1 minute and fixed ...... B
Immediately after coating the wire bar (blank) …… C
The orientation states of the pigments in A, B, and C were observed.

The medium 5 was formed and evaluated using the materials shown below.
UV resin UV flexonics (TOKA) 5 parts by weight Pigment Iriodin524 (Merck) 1 part by weight

褐色…顔料が縦配向している状態（強磁場によって顔料が強制的に配向している状態）
金属光沢（赤）…顔料が横配向している状態（強磁場の影響が無く、重力の影響で通常なり得る配向状態） The results for Examples 17 and 18 are shown in Table 5.

Brown: The pigment is vertically oriented (the pigment is forcibly oriented by a strong magnetic field)
Metallic luster (red): State in which the pigment is laterally oriented (alignment state that is not affected by a strong magnetic field and can be normally affected by gravity)

  As described above, according to the present embodiment, by adding fine particles to the low-viscosity paint, the pigment oriented in the substantially vertical direction by the magnetic field enters the gaps between the fine particles, and the state in which the pigment is oriented in a magnetic field environment is Even when going out, it can be kept for a certain period of time. Since a process for solidifying the paint outside the magnetic field can be introduced within this fixed time, it is easy to form a medium on the production line.

[Seventh Embodiment]
As a seventh embodiment of the present invention, a designable medium forming method and a designable medium will be described.
In the third embodiment, the reason why the pattern is formed by applying a magnetic field using a ferromagnetic material is that a phenomenon that magnetic lines of force are drawn into the ferromagnetic material region occurs. This will be described with reference to FIG. For example, a magnetic member having a ferromagnetic region of an alphabetic “L” character pattern is placed adjacent to the medium, the medium is disposed at a position A of the horizontal magnetic field shown in FIG. 8A, and FIG. As shown in the top view of FIG. 5, the pigment of the L-shaped ferromagnetic region 4a is oriented by making the straight magnetic line of force g perpendicular to the L-shaped vertically long line portion. Here, as shown in FIG. 27B, a phenomenon in which the linear magnetic lines of force g are drawn into the ferromagnetic region 4a occurs. This phenomenon appears strongly in the part where the magnetic field lines are orthogonal to the ferromagnetic region, but does not appear in the part where the magnetic field lines are horizontal to the ferromagnetic region because the magnetic field lines are distorted little. Due to this phenomenon, as shown in FIG. 27C, the L-shaped pattern 34 formed on the coating layer 5a has a strong contrast in the portion 34a (and the portions at both ends of 34b) perpendicular to the magnetic force line g. On the other hand, the portion 34b that overlaps the magnetic field lines g appears with low contrast. Therefore, in the designable medium 30 shown in FIG. 27C, the L-shaped pattern 34 is not formed in a complete shape.

  From the above description, when a ferromagnetic material having a predetermined pattern is adjacent to a medium and a pigment is oriented by applying a magnetic field, there are strong and weak portions depending on the shape of the ferromagnetic material pattern. It appears and there is a problem that visibility becomes low. In particular, since many pearl pigments have a light color tone, the pattern cannot be accurately recognized unless the contrast is uniform. The designable medium forming method of the present embodiment solves such a problem.

The designable medium forming method of the present embodiment is the same as that of the third embodiment. That is, as shown in FIG. 11, a coating layer in which a pigment having a magnetic anisotropy of 10 ⁻⁶ m ³ / kg or less is dispersed in a resin is applied to a substrate to form a coating layer. A coating layer forming step (step S11), and a pattern member (magnetic member) having a predetermined pattern formed by a ferromagnetic material or a paint containing a ferromagnetic material on a medium on which a coating layer is formed on a substrate. Place in a magnetic field of 0.3 Tesla or more in a state of being adjacent to each other, and a pigment orientation step for orienting the pigment in the coating layer (Step S12), or while applying the magnetic field or applying the magnetic field, orient the pigment Then, a coating layer curing step of curing the coating layer (step S13) is performed. In the present embodiment, the method of applying a magnetic field in the pigment orientation step S2 is different from that in the third embodiment. Hereinafter, details of the designable medium forming method of the present embodiment will be described.

  First, also in the designable medium forming method of the present embodiment, a medium in which a coating layer is formed by applying a paint to a base material is formed. The coating layer forming step S11 shown in FIG. Since this is the same as the coating layer forming step S1 of the second embodiment or the second embodiment, description thereof is omitted here.

  Next, details of the pigment orientation step S12 of FIG. 11 will be described below. In FIG. 8, the same parts as those in FIG. 1 and FIG. 4A of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the following description, the anisotropic magnetic susceptibility of the pigment is a positive (+) value, and a coating containing a scaly glittering pigment is applied to the substrate 5b to provide the coating film 5a. 1 (a)) is formed (after the coating layer forming step S11 in FIG. 11), and then the medium 5 is applied as a magnetic field with a horizontal magnetic field as an example. The magnetic member 4 adjacent to the medium 5 when the magnetic field is applied has a ferromagnetic region 4a formed in an L-shaped pattern shape (see FIG. 27A) on at least one surface (upper surface in the figure). It is a thing.

  In the pigment orientation step S12, as shown in FIG. 8 (a), the magnetic member 4 is placed at the position of the linear magnetic lines 3g (the position indicated by the arrow A in the figure) among the magnetic lines 3a to 3m. The medium 5 is disposed on the magnetic member 4 and a magnetic field is applied at 0.3 T (T is Tesla) or more, preferably 1 T or more. When applying this magnetic field, in the present embodiment, as shown in FIGS. 28A and 28B, the magnetic field lines that form a magnetic field by inclining the medium 5 by a predetermined angle with respect to the linear magnetic field lines 3g. 3g and the straight line portions (34a and 34b in FIG. 28B) constituting the ferromagnetic region 4a (L-shaped pattern) are prevented from overlapping in a horizontal state. Thereby, distortion of the line of magnetic force 3g can be expressed in any part of the L-shaped pattern formed on the coating film 5a.

  In the pigment orientation step S12, the coating layer curing step S13 for curing the coating film 5a by ultraviolet irradiation after the magnetic field is applied to the medium 5 or the pigment 14 is oriented by applying the magnetic field to the medium 5 is performed. Do. By the above steps S11 to S13, as shown in FIG. 28C, the designable medium 30 of the present embodiment is formed. In the designable medium 30 formed in this way, an L-shaped pattern 34 of the magnetic member 4 is reflected on the medium surface, and the contrast is made uniform.

  In the above description, an L-shaped pattern composed only of straight lines is taken as an example, but the designable medium forming method of the present embodiment can also be applied to a pattern including a curve.

  In the above description, the medium itself is tilted in the pigment orientation step S12, but the apparatus for applying a magnetic field may be tilted.

  As described above, according to the present embodiment, when a magnetic field is applied to the coating layer in the pigment orientation step, the magnetic force lines that form the magnetic field, the linear portions that form the pattern formed on the coating layer by the magnetic member, and By preventing the curve part from becoming horizontal and causing distortion of the magnetic field lines in any part of the pattern, the contrast of the pattern formed on the coating layer can be made uniform, improving visibility. It becomes possible.

  As mentioned above, although each embodiment and each Example of this invention were described, each embodiment and each Example can also be combined arbitrarily.

  INDUSTRIAL APPLICABILITY The present invention can be used for forming a fine color tone or a pattern such as a pattern, a figure, or a character different from the surroundings on the coating film surface.

(A) is a figure which shows typically the side surface of the medium which concerns on the 1st Embodiment of this invention, (b) and (c) are the pigment orientation methods which concern on the 1st Embodiment of this invention. It is a figure which shows typically the apparatus to perform. (A) is a sectional side view which shows typically the orientation state before the magnetic field application of the pigment which concerns on the 1st Embodiment of this invention, (b) is the pigment which concerns on the 1st Embodiment of this invention. It is a sectional side view which shows typically the orientation state in a horizontal magnetic field, and (c) is a sectional side view which shows typically the orientation state in the vertical magnetic field of the pigment which concerns on the 1st Embodiment of this invention. (A) is a figure which shows typically the apparatus which performs the pigment orientation method which concerns on the 1st Embodiment of this invention, (b) is the perpendicular magnetic field of the pigment which concerns on the 1st Embodiment of this invention. It is a sectional side view which shows typically the orientation state in a curve part. (A) is a figure which shows typically the apparatus which performs the pigment orientation method which concerns on the 1st Embodiment of this invention, (b) is the surface of the medium which concerns on the 1st Embodiment of this invention. It is a top view showing typically. (A) And (b) is a perspective view which shows typically an example of the color tone change of the designable medium which concerns on the 1st Embodiment of this invention. It is a flowchart which shows the designable medium formation method which concerns on the 1st Embodiment of this invention. It is a sectional side view which shows typically the orientation state in the horizontal magnetic field of the pigment which concerns on the 2nd Embodiment of this invention. (A) is a figure which shows typically the apparatus which performs the pigment orientation method which concerns on the 3rd Embodiment of this invention, (b) is the side surface of the magnetic member which concerns on the 3rd Embodiment of this invention. (C) is a figure which shows the modification of a magnetic member. (A) is a top view which shows the surface of the medium based on the 3rd Embodiment of this invention, (b)-(g) is the peripheral part other than the pattern part of the medium shown in (a), and a pattern part It is a sectional side view which shows typically the orientation state of the pigment in each. (A)-(d) is a perspective view which shows typically an example of the color tone change of the designable medium which concerns on the 3rd Embodiment of this invention. It is a flowchart which shows the designable medium formation method which concerns on the 3rd Embodiment of this invention. It is a figure showing one process of the designable medium formation method concerning a 4th embodiment of the present invention while showing roughly the side of the device which performs the designable medium formation method concerning the 4th embodiment of the present invention. is there. It is a figure showing one process of the designable medium formation method concerning a 4th embodiment of the present invention while showing roughly the side of the device which performs the designable medium formation method concerning the 4th embodiment of the present invention. is there. It is a figure showing one process of the designable medium formation method concerning a 4th embodiment of the present invention while showing roughly the side of the device which performs the designable medium formation method concerning the 4th embodiment of the present invention. is there. It is a figure showing one process of the designable medium formation method concerning a 4th embodiment of the present invention while showing roughly the side of the device which performs the designable medium formation method concerning the 4th embodiment of the present invention. is there. It is a figure for demonstrating operation | movement of the magnetization yoke which performs the pigment orientation method which concerns on the 4th Embodiment of this invention. (A) is side sectional drawing which shows typically the orientation state in the diagonal magnetic field from the upper left to the lower right of the pigment which concerns on the 4th Embodiment of this invention, (b) is the 4th of this invention It is a sectional side view which shows typically the orientation state in the diagonal magnetic field from the upper right of the pigment which concerns on embodiment to lower left. (A) is a side view of the designable medium according to the fourth embodiment of the present invention, and (b) and (c) are examples of the design of the designable medium according to the fourth embodiment of the present invention. FIG. It is a flowchart which shows the designable medium formation method which concerns on the 4th Embodiment of this invention. (A)-(e) is a top view which shows the surface of the medium based on the 5th Embodiment of this invention. It is a flowchart which shows an example of the designable medium formation method which concerns on the 5th Embodiment of this invention. It is a flowchart which shows an example of the designable medium formation method which concerns on the 5th Embodiment of this invention. It is a sectional side view which shows typically the state in the medium which concerns on the 6th Embodiment of this invention. (A)-(d) is a sectional side view which shows typically an example of each orientation state of the pigment which concerns on the 6th Embodiment of this invention. (A)-(c) is a sectional side view which shows typically an example of each orientation state of the pigment which concerns on the 6th Embodiment of this invention. (A)-(c) is a sectional side view which shows typically an example of each orientation state of the pigment which concerns on the 6th Embodiment of this invention. (A) is a top view which shows an example of the magnetic force line at the time of the magnetic field application which concerns on the 7th Embodiment of this invention, (b) is a magnetic field line at the time of the magnetic field application concerning the 7th Embodiment of this invention. It is a perspective view which shows an example, (c) is a top view which shows the surface of the designable medium which orientated the pigment with the magnetic field shown to (a) and (b). (a) is a top view which shows an example of the magnetic force line at the time of the magnetic field application concerning the 7th Embodiment of this invention, (b) is an example of the magnetic force line at the time of the magnetic field application concerning the 7th Embodiment of this invention. (C) is a top view showing the surface of a designable medium in which pigments are oriented with the magnetic field shown in (a) and (b).

Explanation of symbols

1, 2 Magnetized yoke 3a-3m Magnetic field lines 4, 40 Magnetic member 4a, 40a Ferromagnetic region 4b, 40b Non-ferromagnetic region 5, 50 Medium 5a Coating film (coating layer)
5b base material 5c transparent base material 6a roll part (feeding part)
6b Roll part (winding part)
7 Coating part 8 UV irradiation part 9 Fine particles (glass beads)
DESCRIPTION OF SYMBOLS 10 Coating film in which pigment is vertically oriented 11 Coating film in which pigment is horizontally oriented 12 Coating film in which pigment is oriented obliquely to the left 13 Coating film in which pigment is oriented obliquely to the right 14, 14a, 14b, 14c, 14d Pigment component 15 Background coating on medium surface 16, 17, 18, 19 Character coating on medium surface 20, 21, 22, 23 Black square coating on medium surface 24, 25, 26, 27 White square coating on medium surface Film 30 Designable medium 31, 33 Gloss 32 Pattern part (11 parallel straight lines)
34 Pattern part (L-shaped)
34a Vertical line portion of L-shaped pattern 34b Horizontal line portion of L-shaped pattern 60 First coating layer 61 Unprinted portion 70 Second coating layer 80 First coating layer and second coating Part where the layer overlaps 90 Third coating layer

Claims (2)

A designable medium forming method for forming a medium having designability,
A coating layer forming step of forming a coating layer by applying a coating material in which a pigment having a magnetic anisotropy of 10 ⁻⁶ m ³ / kg or less in a resin is dispersed in a resin to form a coating layer;
A medium in which the coating layer is formed on the substrate is placed in a magnetic field of 0.3 Tesla or more, and a pigment orientation step for orienting the pigment in the coating layer;
A coating layer curing step for curing the coating layer while applying the magnetic field or after orienting the pigment by applying the magnetic field, and
The pigment orientation step includes
Having a predetermined pattern formed by a paint containing a ferromagnetic material ;
A magnetic member having a ferromagnetic region formed of a paint containing the ferromagnetic material and a non-ferromagnetic region formed of a non-ferromagnetic material is adjacent to a predetermined portion of the coating layer. Apply a magnetic field,
The designable medium forming method, wherein the pigment is oriented in a predetermined direction for each predetermined portion of the coating layer formed in the coating layer forming step.   When the magnetic field is applied to the coating layer in the pigment orientation step, the magnetic lines that form the magnetic field and the linear portion and the curved portion that form the pattern formed on the coating layer by the magnetic member are not horizontal. The designable medium forming method according to claim 1, wherein:

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