JP2007326074A - Display and method for forming figure with pattern - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display having a various clear pattern of magnetic particles, which is emerged by optical reflection, in a figure such as letters, symbols, or numbers, and to provide a method for forming a figure with the pattern, by which a various clear pattern of the magnetic particles is emerged in the figure such as the letters, symbols, or numbers by optical reflection. <P>SOLUTION: The figure 11 such as a letter is printed in transparent or translucent ink including the magnetic particles on the surface of a base material 12, and a plurality of strip-shaped reflection portions 13a are formed in the figure 11 by orienting the magnetic particles in the coating of the figure 11. In order to form the reflection portion 13a, a plurality of rubber magnet pieces making contact with each other adjacently so as to have different magnetic polarities from each other are made to face the coating, when the magnetic particles are movable in the coating of the figure 11 printed on the surface of the base material 12, and the coating having the magnetic particles oriented by the magnetic fields of the rubber magnet pieces are dried and hardened. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a display object in which figures such as letters, symbols, and numbers are formed with a transparent or translucent paint or ink containing flat magnetic particles on the surface of a non-magnetic substrate, and The present invention relates to a method for forming a figure with a pattern.

  Conventionally, as such a pattern formation method, for example, there is a magnetic pattern formation method described in Patent Document 1. In this magnetic pattern forming method, a colored layer containing symbols and characters containing magnetic particles is formed on the surface of an object to be coated, and a sheet-like permanent magnet shaped like a colored layer is opposed to this colored layer. This sheet-like permanent magnet is a single one, and the front and back surfaces are made magnetic poles by double-sided magnetization. Then, by causing the magnetic field of the sheet-like permanent magnet to act on the magnetic particles inside the colored layer, the magnetic particles in the colored layer are moved to the peripheral portion of the colored layer, and the thickness of the colored layer is changed to the inner peripheral side. Rather thicker at the periphery. The reflection of light by the magnetic particles arranged at the peripheral edge of the colored layer in this way makes the outline of the symbol or character clear, and the three-dimensional appearance that appears to be raised or dented depending on the viewing angle. It is supposed to be given to characters.

Further, in the pattern coating film forming method described in Patent Document 2, a plurality of magnet pieces arranged so as not to contact each other is used to form, for example, a dotted pattern-like aggregate representing symbols, characters, etc. The magnetic field of each magnet piece of the body is applied to the coating film on the surface of the object to be coated. And the magnetic body in a coating film is orientated by this magnetic field, and the symbol, character, etc. corresponding to the shape of an aggregate | assembly appear on a coating film by reflection of the light of this oriented magnetic body.
JP-A-6-86958 Japanese Patent Laid-Open No. 3-193162

  However, the magnetic pattern forming method described in the above-mentioned Patent Document 1 only makes the outlines of symbols and characters clear after all. For this reason, the appearance of the symbols and characters is uniform except for the peripheral portion, and the change is insufficient and is not interesting. In addition, in this magnetic pattern forming method, in order to apply a magnetic field to the colored layer, it is necessary to prepare a sheet-like permanent magnet shaped in accordance with the shape of the symbol or character, which requires extra man-hours and equipment. It becomes.

  Moreover, the formation method of the pattern coating film described in the said patent document 2 only raises a symbol, a character, etc. on a coating film. Therefore, the appearance of the symbols and characters formed by this method was uniform except for the peripheral portion, as in the method of Patent Document 1. In addition, in this method, it is necessary to arrange a plurality of magnet pieces in accordance with the shape of the symbol or character in order to raise the symbol, character or the like. Equipment is required.

An object of the present invention is to provide a display object in which a pattern rich in change appears in a figure such as a character, a symbol, and a number as a result of reflection of light of magnetic particles.
Moreover, it is providing the formation method of the figure with a pattern which can form the above patterns.

  In order to achieve the above object, the invention described in claim 1 draws a figure on the surface of the substrate with a transparent or translucent paint or ink containing flat magnetic particles, and in the coating film in the figure. A pattern is formed in the figure by the orientation of the magnetic particles. The “coating film” means a film of paint or ink that forms a figure drawn on the surface of the substrate.

  According to this invention, a pattern is formed in the figure drawn on the substrate surface by the orientation of the magnetic particles in the paint film or ink film. This pattern appears in the figure due to the reflection of light from the magnetic particles, and its position changes according to the change in the angle of the line of sight with respect to the substrate surface. Therefore, in the figures such as letters, symbols, and numbers, a variety of patterns appear as clear due to the reflection of light from the magnetic particles.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the color of the paint or ink is similar to the color of the surface of the substrate or is colorless.
According to this invention, since the color of the part other than the pattern in the figure is almost the same as the color of the substrate surface, it seems that the outline of the figure is formed depending on the presence or absence of the pattern. Accordingly, graphics such as letters, symbols, numbers, etc. are displayed in a variety of patterns as clear due to the reflection of light from the magnetic particles.

  The invention according to claim 3 is a state in which a figure is drawn on the surface of the substrate with a transparent or translucent paint or ink containing flat magnetic particles, and the magnetic particles in the paint film of the same figure are movable. When the magnets are in contact with each other, the magnets adjacent to each other in contact so that the polarities of the adjacent magnetic poles are different from each other correspond to the coating, and the coating is dried and cured with the magnetic particles oriented by the magnetic field of each magnet. By doing so, a pattern corresponding to the boundary between adjacent magnets is formed in the figure by the same magnetic particles. Here, “when the magnetic particles in the coating film of the same figure are in a movable state” means that from the point when the figure is started to draw, the coating film of the figure that has been drawn is dried and cured, and the magnetic particles are It means until it becomes impossible to move.

  According to the present invention, in the figure coating film, the magnetic particles at positions corresponding to the boundaries of adjacent magnets in the contact state are oriented in the direction along the substrate surface, and the orientation of the magnetic particles in the figure A pattern is formed. Therefore, a pattern corresponding to the shape of the boundary between the magnets adjacent to each other in the contact state can be formed in the figure.

  The invention according to claim 4 is the invention according to claim 3, wherein the plurality of magnets are sheet-like rubber magnet pieces magnetized on both sides, and the sheet-like rubber magnet pieces are arranged side by side to form a sheet. A magnet is formed.

According to the present invention, since a sheet-like rubber magnet that can be easily punched is used, a pattern having a desired shape can be easily formed.
The invention according to claim 5 is the invention according to claim 3 or 4, wherein the pattern is a geometric pattern.

According to this invention, a geometric pattern can be represented by reflection of light of magnetic particles in a figure such as a character or a symbol.
The invention according to claim 6 is the invention according to any one of claims 3 to 5, wherein the figure is formed by screen printing using ink.

  According to the present invention, since the thickness of the ink film of the figure can be increased, the layer of the magnetic particles that reflects light is thickened, and a more varied pattern can be represented in the figure. Moreover, a figure can be printed on the base material surface which consists of a curved surface.

According to the present invention, it is possible to provide a display object in which a pattern rich in change appears in a figure such as a character, a symbol, and a number as a result of reflection of light of magnetic particles.
In addition, it is possible to provide a method for forming a figure with a pattern that can form a pattern rich in change as a result of reflection of light of magnetic particles in a figure such as letters, symbols, and numbers.

Next, an embodiment of the method of the present invention will be described with reference to FIGS.
As shown in FIG. 1, a plate 10 as a display object is configured by printing figures 11 such as a plurality of characters on a surface of a synthetic resin base material 12 with colorless and transparent or translucent ink. Note that the graphic 11 is not limited to characters, but may be an expression or representation such as a symbol or number.

  This ink is constituted by adding magnetic particles for forming a pattern in the figure 11 to a vehicle and a dye for drawing the figure 11 on the surface of the substrate 12. As the vehicle, urethane resin, polyester resin, vinyl resin, acrylic resin, epoxy resin, or a copolymer thereof can be used, but from the viewpoint of adhesion to the plate 10, wear resistance, and alcohol resistance. The use of urethane resin is preferred.

  The magnetic particles are oriented in the direction of the magnetic field lines of the magnetic field acting from the outside when the figure 11 is drawn on the surface of the substrate 12 with ink or after the figure 11 is drawn, and a pattern is formed in the figure 11. To do. Therefore, as the magnetic particles, flat particles such as flakes, plates, sheets, or films are used so that light can be reflected. The magnetic particles are known and formed of a ferromagnetic material such as iron oxide, nickel, cobalt, or an alloy thereof. The magnetic particles have a length of about 1 to 80 μm and a thickness of about 0.1 to 20 μm.

  The graphic 11 is printed on the substrate 12 by screen printing, gravure printing, letterpress printing, or the like. In addition, when printing the figure 11 on a curved surface, screen printing or pad printing (tampo printing) is used.

  The entire pattern 11 printed on the surface of the substrate 12 has a striped pattern 13 generated by the transmission of light to the coating film of the ink of the pattern 11 and the reflection of light of the magnetic particles in the coating film. Appears. As shown in FIG. 2, the striped pattern 13 includes a plurality of strip-shaped reflecting portions 13a formed by reflection of light of magnetic particles and a plurality of strip-shaped transmitting portions formed between adjacent reflecting portions 13a. 13b. The reflective portion 13a is a region where the amount of light reflected by the magnetic particles in the coating film is relatively large, and the transmissive portion 13b is a region where the amount of reflected light is relatively small compared to the reflective portion 13a. . As will be described later, the position of each reflecting portion 13a changes as the angle of line of sight changes when viewing each figure 11. The striped pattern 13 gives a varied expression to the entire figure 11.

Next, a method for forming the stripe pattern 13 for each of the figures 11 will be described.
First, using a screen in which a range other than the range corresponding to the graphic 11 is masked, the graphic 11 representing characters, symbols, numbers, and the like is screen-printed on the surface of the substrate 12 with ink.

  Next, before the coating film of the graphic 11 printed on the substrate 12 is dried and cured, the sheet magnet 14 is placed on the surface of the substrate 12 by 0.1 to 0.5 mm as shown in FIG. Face each other through a minute gap.

  As shown in FIGS. 3A and 3B, the sheet-like magnet 14 is a belt-like rubber magnet piece as a sheet-like rubber magnet piece magnetized on both sides so that the front and back are magnetic poles N and S, respectively. 15 is bonded to a base sheet (not shown) in a state where the edges are in contact with each other, and has approximately the same area as the base material 12 as a whole. As shown in FIG. 4, the magnetic poles N (or S) of the rubber magnet pieces 15 adjacent in the contact state are opposite in polarity. The sheet-like magnet 14 can also be configured by arranging a plurality of magnetized belt-like regions in parallel so that the polarities of adjacent magnetic poles are reversed with respect to a single sheet-like rubber magnet.

  And by making the surface of the said sheet-like magnet 14 face the surface of the base material 12, as shown to Fig.5 (a), the magnetic body particle | grains in the coating film of each figure 11 are made to apply the magnetic field of each rubber magnet piece 15 to it. To act on. At this time, as shown in FIG. 5 (b), in the coating film of the graphic 11, in the direction corresponding to the boundary 16 between the rubber magnet pieces 15 adjacent in the contact state, in the direction along the surface of the substrate 12. The magnetic field line 18 faces. In other words, the extreme value (maximum value) of the magnetic force line 18 that closes between the magnetic poles N and S of the adjacent rubber magnet pieces 15 in the contact state is located at the boundary 16 between the rubber magnet pieces 15. For this reason, the magnetic particles 17 in the coating film are oriented in the direction along the surface of the substrate 12 at the boundary 16 between the adjacent rubber magnet pieces 15.

  Thus, when the coating film is dried and cured in a state where a magnetic field is applied to the magnetic particles in the coating film of the figure 11, as shown in FIG. It is fixed in a state where it is oriented in the direction of the magnetic lines 18 inside. At this time, in the coating film, at the position corresponding to the boundary 16 between the rubber magnet pieces 15, the magnetic particles 17 are fixed in a state of being oriented in the direction along the surface of the substrate 12. Further, the further away from the boundary 16, the more the magnetic particles 17 are fixed in a state where the inclination angle with respect to the surface of the substrate 12 is increased. As a result, in the coating film of each figure 11, the magnetic particles 17 at positions corresponding to the boundaries 16 between the rubber magnet pieces 15 are oriented in a direction along the surface of the substrate 12.

  Now, each figure 11 on the surface of the base material 12 exhibits a color close to the color of the surface of the base material 12 when the ink is colorless and transparent, and when the ink is colored and semi-transparent, the base material 12. A color obtained by superimposing the color of the ink on the color of. On the other hand, the light incident on the coating film from the front side of each figure 11 is reflected to the front side of the figure 11 by the magnetic particles 17 at a position corresponding to the boundary 16 of the rubber magnet piece 15 as shown in FIG. The For this reason, as shown by a solid line in FIGS. 1 and 2, the reflecting portion 13 a appears in the graphic 11 so as to extend along the boundary 16 between the adjacent rubber magnet pieces 15.

  In addition, light that has entered the coating film from the front side of each figure 11 is reflected in a direction inclined with respect to the surface of the substrate 12 by each magnetic particle 17 at a position away from the corresponding position with respect to the boundary 16. For this reason, when each figure 11 is viewed from the direction inclined with respect to the front, as shown by a two-dot chain line in FIGS. 1 and 2, the reflection is performed at a position away from the corresponding position with respect to the boundary 16 of the rubber magnet piece 15. Part 13a appears.

  Therefore, as shown in FIG. 1, each figure 11 includes a reflecting portion 13a corresponding to a boundary 16 (shown in FIGS. 3 and 4) 16 and a transmitting portion 13b between the reflecting portions 13a. As a result, a stripe pattern 13 is formed. And as this stripe pattern 13 shows with the dashed-two dotted line in FIG. 2, a position changes with the angle change of a line of sight when the surface of the base material 12 is seen. Here, when the color of the ink is translucent of the same color as the color of the base material 12 or is colorless and transparent, the transmission part 13b of the figure 11 cannot be distinguished on the surface of the base material 12, It seems that the outline of the figure 11 is formed by the presence or absence of the reflection part 13a.

According to this embodiment described in detail above, the following effects can be obtained.
(1) The graphic 11 is printed on the surface of the base material 12 with a transparent or translucent ink containing the magnetic particles 17 and reflected in the graphic 11 by the orientation of the magnetic particles 17 in the coating film of the graphic 11. Part 13a was formed. Therefore, for example, a striped pattern 13 rich in changes due to light reflection of the magnetic particles 17 appears in the figure 11 representing characters.

  (2) A plurality of rubber magnet pieces 15 adjacent to each other in a contact state so as to differ in polarity of adjacent magnetic poles are made to face an uncured ink coating film on the graphic 11. Then, the coating film is dried and cured in a state where the magnetic particles 17 in the coating film are oriented by the magnetic field of each rubber magnet piece 15. In this way, a pattern corresponding to the boundary 16 between the adjacent rubber magnet pieces 15 in the contact state is formed in the figure 11 by the magnetic particles 17 in the coating film. For this reason, in the coating film of the figure 11, the magnetic particles 17 at positions corresponding to the boundaries 16 of the rubber magnet pieces 15 adjacent to each other in the contact state are oriented in the direction along the surface of the base material 12. The reflecting portion 13 a is formed in the figure 11 by the orientation of 17. Therefore, a band-like reflecting portion 13 a corresponding to the boundary 16 between the rubber magnet pieces 15 adjacent to each other in the contact state can be formed in the figure 11.

(3) Since the rubber magnet piece 15 that can be easily punched is used, a pattern having a desired shape can be easily formed.
(4) The figure 11 screen-printed with ink has a thick coating film compared to other gravure printing and letterpress printing. For this reason, the magnetic substance particle which reflects light increases, and the stripe pattern 13 which was rich in the change in the figure 11 appears. Moreover, even if the surface of the base material 12 is a curved surface, the figure 11 can be printed.

It should be noted that the present invention can be modified and embodied as follows.
As shown in FIG. 8, a lattice-like reflecting portion 20 due to reflection of light of magnetic particles appears in the figure 11 as a geometric pattern, and a lattice pattern is formed on the figure 11 by the reflecting portion 20. So that As shown in FIG. 9, the sheet-like magnet 14 for forming the lattice-like reflecting portion 20 is composed of a plurality of square rubber magnet pieces 15 arranged in a grid pattern. In this sheet-like magnet 14, one magnetic pole and the other magnetic pole of the rubber magnet pieces 15 that are adjacent to each other in contact with each other have opposite polarities. The shape of the rubber magnet piece 15 may be a rectangle, a rhombus or a triangle, and other geometric patterns may be formed.

  As shown in FIG. 10, a plurality of annular reflecting portions 21 due to the reflection of light of the magnetic particles appear in the figure 11 as a geometric pattern. As shown in FIG. 11, the sheet-like magnet 14 for forming the annular reflecting portion 22 is formed by cutting out a plurality of circular rubber magnet pieces 15a from a single sheet-like rubber magnet magnetized on both sides. With the rubber magnet piece 15a turned upside down, the rubber magnet piece 15a is cut out and fitted into the hole 15c of the rubber magnet piece 15b. That is, the rubber magnet pieces 15a corresponding to the islands are fitted into the holes 15c of the rubber magnet pieces 15b corresponding to the sea, as if there are a plurality of islands in the sea. As a result, in the sheet magnet 14, the magnetic poles of the rubber magnet pieces 15a adjacent to each other in the contact state and the magnetic poles of the rubber magnet pieces 15b have opposite polarities. In this case, since the entire magnet is completed simply by fitting the rubber magnet piece 15a into the hole 15c of the rubber magnet piece 15b, the creation of the magnet is facilitated. The shape of the rubber magnet piece 15a may be a square, a rectangle, a rhombus, a triangle, an ellipse, a star, or the like, and other geometric patterns may be formed.

-You may form the edge of the rubber magnet piece 15 so that the reflection part 13a may become a curve, for example, may form the wave-like reflection part 13a.
-You may make a magnetic field act on the coating film of the figure 11 with the sheet-like magnet 14 contact | abutted on the back surface of the base material 12. FIG. In this case, the sheet-like magnet 14 is brought into contact with the base material 12 before drawing the graphic 11 in advance, and the magnetic material particles 17 in the coating film are simultaneously drawn on the surface of the base material 12 in this state. Can also be oriented by a magnetic field.

-You may form the figure 11 by apply | coating or spraying the ink in the state which masked the area | region except the area | region which forms the figure 11 with respect to the surface of the base material 12. FIG.
The figure 11 may be directly drawn on the surface of the substrate 12 by applying ink by an ink jet method without masking.

-You may draw the figure 11 directly on the surface of the base material 12 using a brush and a brush, without masking.
-You may form the pattern by a magnetic particle only in the partial area | region in the figure 11. FIG.

  A block-shaped permanent magnet or an electromagnet may be used instead of the rubber magnet piece 15.

The front view which shows the plate on which the character of one Embodiment was printed. The front view which shows the character in which the pattern was formed. (A) is a front view which shows a sheet-like magnet, (b) is a side view which shows a sheet-like magnet and a plate. FIG. 4 is a sectional view taken along line aa in FIG. 3. (A) is a longitudinal cross-sectional view which shows a plate and a sheet-like permanent magnet, (b) is a longitudinal cross-sectional view which shows the principal part. The longitudinal cross-sectional view of the plate in the position of a character. The schematic diagram which shows reflection of the light in a character. The front view which shows the character in which the pattern in other embodiment was formed. The front view which shows a sheet-like magnet. The front view which shows the character in which the pattern in other embodiment was formed. The front view which shows a sheet-like magnet.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Plate as display object, 11 ... Graphic, 12 ... Base material, 13 ... Striped pattern, 13a ... Reflecting part as pattern, 14 ... Sheet magnet, 15 ... Rubber magnet piece as sheet rubber magnet piece, 16 ... boundary, 17 ... magnetic particles, 20, 21 ... reflecting part as a pattern, N, S ... magnetic pole.

Claims (6)

  The figure is drawn on the substrate surface with transparent or translucent paint or ink containing flat magnetic particles, and the pattern is formed in the figure by the orientation of the magnetic particles in the coating film The display object.   The display object according to claim 1, wherein the color of the paint or ink is similar to the color of the surface of the base material or is colorless.   Draw a figure on the surface of the substrate with a transparent or semi-transparent paint or ink containing flat magnetic particles, and when the magnetic particles in the coating of the figure are in a movable state, the adjacent magnetic pole By making a plurality of magnets adjacent to each other in a contact state so as to have different polarities correspond to the coating film and drying and curing the coating film in a state where the same magnetic particles are oriented by the magnetic field of each magnet, the boundary between adjacent magnets A pattern having a pattern is formed in the figure by the same magnetic particles.   4. The patterned figure according to claim 3, wherein the plurality of magnets are sheet-like rubber magnet pieces magnetized on both sides, and the sheet-like rubber magnet pieces are arranged side by side to constitute a sheet-like magnet. Forming method.   The said pattern is a geometric pattern, The formation method of the figure with a pattern of Claim 3 or Claim 4 characterized by the above-mentioned.   The said figure is formed by screen printing using ink, The formation method of the figure with a pattern as described in any one of Claims 3-5 characterized by the above-mentioned.

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