JP2006071622A - Gauge board for car - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gauge board for a car having a pseudo-metal surface, to be expressed more real, without the occurrence of the appearance defects, due to a moire at a metal surface forming with a spin pattern. <P>SOLUTION: The gauge board for car is constituted as follows: a front surface and a rear surface of a sheet to be printed are covered with a light-reflection layer 14 and a light shading layer 16, respectively. Printing formation of a first spin pattern 18, which presents a regular concentric circle-like pattern consisting of a plurality of the circles 22, without breakages having the same line width and a constant pitch on the light-reflecting layer 14 is carried out. For the circle 22, many circles 24 having different in both the line width and the pitch, or having one or more breaks 26 and the plurality of the circles 24 having at least different in either the line width or the pitch, are drawn. Then, the gauge board for car is constituted, with a position shifted state so as to superimpose a second spin pattern 20, having an irregular concentric circle-like pattern on the first spin pattern 18. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an automotive instrument panel, and more particularly to a novel structure of an automotive instrument panel having a pseudo metal surface formed by screen printing.

  Generally, an automobile is equipped with several types of instruments such as a speedometer, a tachometer, and a water temperature gauge. The instrument panels for automobiles, which are the substrates for these various instruments, are usually made using synthetic resin materials. However, with the recent trend toward higher-grade automobiles, they are installed in, for example, luxury passenger cars. It is becoming increasingly desirable for instrument panels to be made of metal that can give a profound impression and a high-class feel.

  Therefore, it is possible to produce an instrument panel for automobiles with a screen printed matter in which a so-called metal pseudo surface is formed by screen printing, which is a pseudo representation of the metal surface, and to use this as a substitute for a metal instrument panel. Has been done in part. As is well known, the instrument panel having this metal pseudo surface is made of aluminum, brass, etc. on the front and back surfaces of a printed sheet made of a transparent resin flat plate made of polycarbonate or acrylic resin, a transparent glass flat plate, or the like. By reflecting the light irradiated from the surface side of the sheet to be printed by applying a solid ink by screen printing, which has a metallic color (silver or gold) and exhibits a metallic luster by reflection of light, An ink layer that emits metallic luster is formed, and the surface of the printing sheet on which the ink layer is formed is configured as a metal pseudo surface. In an automotive instrument panel having such a metal pseudo surface, superior formability, light weight, and further cost effectiveness are advantageous compared to an instrument panel that is actually made using a metal material. It can be demonstrated.

  Under such circumstances, in order to produce a more realistic texture in the screen printed matter having the metal pseudo surface as described above, a technique for representing the metal surface cut by machining is proposed (for example, the following) Patent Document 1).

  That is, this proposed technique is a concentric pattern in which a large number of concentric circles of the same width are drawn at a constant pitch on both the front and back surfaces of a printed sheet made of a transparent flat plate made of a predetermined synthetic resin. A first spin pattern having a spin pattern) and a second spin pattern are printed by screen printing so as to correspond to the front surface and the back surface, respectively, and formed on the back surface of the printing sheet. A metallic ink that emits metallic luster is solidly applied on the second spin pattern thus formed to form a metallic ink layer. And according to such a technique, the metal surface on which the spin pattern is formed by cutting by machining due to the metallic luster emitted in the metallic ink layer and the spin pattern of the first and second spin patterns, The surface of the printing sheet can be expressed more realistically with a sufficiently high texture.

  However, when a metal pseudo surface is formed on the surface of a printing sheet using such conventional technology, a moire pattern that does not appear on the actual metal surface is generated on the metal pseudo surface. Was inevitable.

  Therefore, in an automotive instrument panel in which a metal pseudo surface is formed by such a conventional technique, a realistic texture can be expressed on the metal pseudo surface, but an appearance defect due to moire is inevitably generated. And that was a very big problem.

JP 2001-113899 A

  Here, the present invention has been made in the background as described above, and the problem to be solved is that, in an automotive instrument panel having a metal pseudo surface, a spin pattern is formed by cutting by machining. To provide a novel structure in which the formed metal surface can be expressed with a metal pseudo-surface with a sufficiently high texture, more realistically, and without causing any appearance defects due to moire. is there.

  In the present invention, in order to solve such a problem, the gist of the present invention is to provide an automotive instrument panel having a metal pseudo surface that simulates a metal surface, and (a) a transparent flat plate And (b) an ink layer formed by applying a screen-printed ink that emits a metallic luster by reflection of light on the surface of the printing sheet, and the surface side of the printing sheet A light reflecting layer that reflects the light irradiated from the surface and emits a metallic luster to make the surface of the printing sheet the pseudo metal surface; and (c) the light reflecting layer on the surface of the printing sheet. Irradiation light from the surface side of the printing sheet, comprising an ink layer formed by applying opaque ink to the entire back surface portion of the printing sheet corresponding to the formation site by screen printing. A light-shielding layer that prevents light from passing through the light-reflecting layer and increases the amount of light reflected by the light-reflecting layer; and (d) a screen that uses light-transmitting ink on the light-reflecting layer. A pattern formed by printing and having a plurality of continuous circles having different diameters having a regular concentric pattern drawn concentrically with the same line width and a constant pitch. A spin pattern, and (e) a pattern formed by screen printing using a light-transmitting ink so as to be superimposed on the first spin pattern, and having a line width and a pitch Both have multiple circles of different diameters, including one that is different from the circle that constitutes the regular concentric pattern of the first spin pattern, or one or more cuts and a line Out of width and pitch A second circle having an irregular concentric pattern in which at least one of a plurality of circles having different diameters including a circle different from the circle constituting the regular concentric pattern is drawn concentrically. A center of a reference circle consisting of any one of a number of circles of different diameters that form the irregular concentric pattern of the second spin pattern. In a state where the second spin pattern is positioned so as to be biased in one radial direction from the centers of a plurality of circles having different diameters constituting the regular concentric pattern of the spin pattern, An automotive instrument panel is provided on the first spin pattern.

  In the automotive instrument panel according to the present invention, the light reflecting action by the light reflecting layer and the action of increasing the reflected light by the light reflecting layer by the light shielding layer are combined. A bright metallic luster can be emitted.

  Moreover, in such an automotive instrument panel, the first spin pattern and the second spin pattern are laminated on the surface of the printing sheet, with the latter facing upward, with the first and second spin patterns misaligned with each other. A large number of circles constituting a regular concentric pattern of the first spin pattern and a large number of circles constituting an irregular concentric pattern of the second spin pattern, with the latter facing upward In a state where they overlap each other, cross each other, or are adjacent to each other, without any regularity, and between a portion overlapped or crossed with each other and other portions Thus, the image is drawn with a remarkable and complicated level difference. Accordingly, such a concentric pattern composed of a large number of circles, that is, a spin pattern, can be formed advantageously in a more three-dimensional manner while advantageously eliminating or suppressing the occurrence of moire.

  Therefore, in the automotive instrument panel according to the present invention as described above, a metal pseudo-surface that emits a sharper metallic luster can be advantageously formed, and on such a metal pseudo-surface, a spin pattern is formed by cutting by machining. The surface of the metal on which the metal layer is formed can be expressed extremely effectively with a sufficiently high texture, more realistically, and without causing any appearance defect due to moire. As a result, a high-class feeling and a solid feeling comparable to metal automobile instrument panels can be obtained even more advantageously.

Aspects of the Invention

  By the way, the present invention can be suitably implemented at least in various aspects as listed below.

<1> An automotive instrument panel having a metal pseudo-surface that simulates a metal surface, (a) a printing sheet made of a transparent flat plate, and (b) a surface of the printing sheet with light An ink layer that is formed by applying a solid ink by screen printing to give a metallic luster by reflection, and reflects the light irradiated from the surface side of the printing sheet to emit a metallic luster, thereby printing the printing object. A light reflecting layer having the surface of the sheet as the metal pseudo-surface; and (c) an opaque ink on the entire back surface portion of the printed sheet corresponding to a portion where the light reflecting layer is formed on the surface of the printed sheet. It consists of an ink layer formed by solid printing by screen printing, and prevents the irradiation light from the surface side of the printed sheet from passing through the light reflecting layer, thereby reducing the amount of light reflected by the light reflecting layer. Increase A light-shielding light-shielding layer, and (d) a pattern formed by screen printing using a light-transmitting ink on the light-reflecting layer, and a plurality of circles having different diameters and having no breaks. A first spin pattern having a regular concentric pattern drawn concentrically with the same line width and a constant pitch; and (e) a light beam so as to be superimposed on the first spin pattern. What is the circle formed by screen printing using ink having transparency, and in which both the line width and the pitch constitute the regular concentric pattern of the first spin pattern? A plurality of circles having different diameters including different circles, or a circle having one or a plurality of cuts and at least one of a line width and a pitch constituting the regular concentric pattern Is a different circle A plurality of circles of different diameters including the second spin pattern having an irregular concentric pattern drawn concentrically, and the irregular concentric pattern of the second spin pattern The center of a reference circle made up of any one of a plurality of circles having different diameters that constitutes one of the plurality of circles having different diameters constituting the regular concentric pattern of the first spin pattern. An automotive instrument panel, wherein the second spin pattern is disposed on the first spin pattern in a state of being offset from the center in one radial direction. .

<2> In the above aspect <1>, an opaque ink having a color that does not emit a metallic luster due to light reflection is applied to screen printing around the portion where the light reflecting layer is formed on the surface of the printing sheet. By applying a solid coating, a color layer that does not emit metallic luster is formed, and an opaque ink different from the ink forming the color layer is screen-printed on the color layer, so that a scale is obtained. Is provided. According to this embodiment, it is possible to advantageously prevent the reading of the scale from being disturbed by the reflected light, and it is possible to obtain an advantage that better usability can be exhibited.

  Hereinafter, in order to clarify the present invention more specifically, the configuration of an automotive instrument panel according to the present invention will be described in detail with reference to the drawings.

  First, in FIG. 1 and FIG. 2, a substrate of an automobile tachometer as an embodiment of an automotive instrument panel having a structure according to the present invention is schematically shown in a planar form and a longitudinal sectional form, respectively. Yes. As is clear from these figures, the tachometer substrate 10 of the present embodiment has a printing sheet 12. The printed sheet 12 is configured by a transparent rectangular thin flat plate made of a resin material such as polycarbonate or acrylic resin, a glass material, or the like.

  A color layer 13 is formed on the surface of the printing sheet 12 (in FIG. 2, the upper surface of the printing sheet 12). The color layer 13 is formed by applying an opaque ink having a color that does not emit a metallic luster due to light reflection to the surface of the printing sheet 12 in a circular pattern by screen printing. . That is, the color layer 13 is an ink layer that does not emit metallic luster and is formed so as to completely cover a circular area portion of a predetermined size on the surface of the transparent printing sheet 12 with a predetermined thickness. It is composed.

  A large number of scales 15 are formed on the outer peripheral portion of the circular color layer 13. The scale 15 is screen-printed using an opaque ink having a color different from that of the ink forming the color layer 13 so as to be scattered at equal intervals in the circumferential direction of the color layer 13. It consists of a short straight line extending radially.

  Further, a light reflection layer 14 is laminated on the color layer 13 provided on the surface of the printing sheet 12. The light reflecting layer 14 is formed by applying ink that emits a metallic luster by reflection of light to a central portion of the color layer 13 in a circular shape smaller than the color layer 13 by screen printing. . That is, the light reflecting layer 14 is formed so as to completely cover a circular area portion with a predetermined thickness except for the outer peripheral portion where the numerous scales 15 are formed on the upper surface of the color layer 13. Thus, it is constituted by an ink layer that emits a metallic luster.

  On the other hand, a light shielding layer 16 is formed on the back surface of the printing sheet 12 (in FIG. 2, the lower surface of the printing sheet 12). The light shielding layer 16 is formed by applying opaque ink to the entire back surface of the printing sheet 12, that is, the entire surface of the printing sheet 12 opposite to the side where the light reflecting layer 14 is formed by screen printing. The opaque ink layer thus formed is constituted. In other words, the light shielding layer 16 is formed on the back side of the printing sheet 12 so as to cover the entire back surface of the light reflecting layer 14 via the printing sheet 12 with the light reflecting layer 14 being lined. Accordingly, light irradiated from the front surface side of the printing sheet 12 can be blocked from being transmitted through the light reflecting layer 14 and leaking from the back surface side of the printing sheet 12.

  Thus, here, the light irradiated from the surface side of the printing sheet 12 is reflected by the light reflection layer 14, and the light reflection layer 14 emits a metallic luster. In addition, since the light that has passed through the light reflecting layer 14 leaks from the back side of the printing sheet 12, the light shielding layer 16 blocks the amount of light reflected by the light reflecting layer 14. Effectively increased, the metallic luster can be emitted more clearly on the light reflecting layer 14. As a result, the formation site of the light reflection layer 14 on the surface of the printing sheet 12 is a metal pseudo surface portion 17 that artificially represents the metal surface with sufficient realism. Further, a donut-like color layer 13 that does not emit metallic luster is provided around the metal pseudo surface portion 17 so as to surround the metal pseudo-surface portion 17, and a large number of scales 15 are provided on the donut-like color layer 13. Is formed.

  As the ink for providing the light reflecting layer 14, among the screen inks used for screen printing, gold ink mixed with brass fine powder, silver ink mixed with aluminum fine powder, further red ink and gold ink. Ink that emits metallic luster such as gold, silver, bronze, etc. due to reflection of light, such as mixed ink that is a mixture of ink such as blue ink, candy ink, indigo ink, etc., is a metal color that should be expressed by the light reflecting layer 14 Depending on use, it is used appropriately. In addition, as the ink for providing the color layer 13, the scale 15, and the light shielding layer 16, an ink having an opaque color such as white or black is appropriately selected from various screen inks and used. . Further, as the ink for providing the light reflecting layer 14 and the light shielding layer 16, generally an inexpensive solvent type is used, but the type (type) of such ink is not particularly limited.

Further, the thickness of the light reflecting layer 14 (dimension indicated by t ₁ in FIG. 2), the thickness of the light shielding layer 16 (dimension indicated by t _{2 in} FIG. 2), the color layer 13 (FIG. 2). In this case, the thickness (dimension indicated by t ₃ ) is not limited in any way, but the thicknesses of the respective layers 14, 16, 13: t ₁ , t ₂ , t ₃ are all 2 μm or more. It is desirable that As a result, leakage of transmitted light of the light reflecting layer 14 from the back side of the printing sheet 12 is further effectively prevented, and a more vivid metallic luster is emitted in the light reflecting layer 14. The upper limit of the thicknesses t ₁ , t ₂ , and t ₃ of each of the light reflecting layer 14, the light shielding layer 16, and the color layer 13 is more than necessary for each layer 14, 16, 13 due to wasteful use of ink. It is determined appropriately as long as it does not become thick.

  In the tachometer substrate 10 of the present embodiment, in particular, the first spin having a concentric pattern different from each other on the light reflecting layer 14 forming the metal pseudo surface portion 17 on the surface of the printing sheet 12. The pattern 18 and the second spin pattern 20 are laminated, and there are significant features that are not found in conventional products.

  That is, as apparent from FIGS. 1 and 2 and FIG. 3 showing a planar form of a screen printed matter in which only the first spin pattern 18 is formed on the surface of the printing sheet 12, here, the printing sheet is here. A concentric pattern in which a large number of concentric circles are densely drawn is screen-printed using light-transmitting ink on substantially the entire circular region where the light reflecting layer 14 is formed on the surface of 12. The first spin pattern 18 is formed by the print pattern having the concentric pattern.

In other words, the first spin pattern 18 has a different diameter from each other, which is formed on substantially the whole of the circular metal pseudo-surface portion 17 in the printing sheet 12 by screen printing using light-transmitting ink. There are a number of first circular ridges 22 that are unbroken, and the first circular ridges 22 of different diameters are centered around the center point of the circular light reflecting layer 14 as O _1. It is configured by being positioned so as to draw concentric circles.

Each of the first circular ridges 22 having different diameters forming the first spin pattern 18 has the same width (the dimension indicated by w _{1 in} FIG. 2) and is extremely narrow. The first spin pattern 18 having a large number of the first circular ridges 22 is regularly formed with a constant pitch (the dimension indicated by P ₁ in FIG. 3). It is designed to have a concentric pattern.

  Further, as is apparent from FIGS. 1 and 2 and FIG. 4 showing a planar form of a screen printed matter in which only the second spin pattern 20 is formed on the surface of the printing sheet 12, the printing sheet 12 has On the first spin pattern 18 formed on the metal pseudo-surface portion 17, a second spin pattern 20 that exhibits a concentric pattern different from the first spin pattern 18 is formed on the entire surface. It is formed by screen printing using an ink having properties.

That is, the second spin pattern 20 has a plurality of second circular convex shapes 24 having different diameters formed by screen printing. Further, the second circular ridges 24 having different diameters are positioned so as to draw concentric circles around the center: O ₂ of the reference circular ridge 24a having the smallest diameter among them. It is constituted by being urged.

Further, in such a large number of second circular ridges 24, the width (the dimension indicated by w _{2 in} FIG. 2) is the same as each first circular ridge in the first spin pattern 18. The width of the strip 22 is the same size as w ₁ , but the cuts 26 are formed in a non-uniform length at one or a plurality of randomly selected locations on the circumference of each strip. cage, also, (4, dimension indicated by P ₂₎ pitch, the pitch of the first circular projections 22: there is a non-uniform sizes, including those of different sizes from the P _1. As a result, the second spin pattern 20 composed of a large number of second circular ridges 24 exhibits an irregular concentric pattern different from the first spin pattern 18 composed of a large number of first circular ridges 22. It has become.

As shown in FIG. 1, the center of the reference circular protrusion 24 a in the second spin pattern 20 having the irregular concentric pattern as described above: O ₂ , that is, a large number of second circular protrusions 24. In the radial direction of each first circular ridge 22 from the center: O _{1 in} the center: O ₁ in the first spin pattern 18 in which the center: O ₂ has a regular concentric pattern in FIG. The second spin pattern 20 is formed on the first spin pattern 18 so as to be superimposed on the right side of FIG. Although not shown, here, numbers corresponding to the many scales 15 are displayed on the second spin pattern 20 formed on the first spin pattern 18, for example, the scales 15. It is further formed by a known screen printing using an ink that gives the color.

  Thus, here, as shown in FIG. 1, a large number of first circular ridges 22 and a large number of second circular ridges 24 in a stacked state of the second spin pattern 20 on the first spin pattern 18. Are positioned so as to cross each other, overlap each other over a predetermined length, or are adjacent to each other in the radial direction. It is designed to change gradually in the direction. As a result, as shown in FIG. 2, the overlapping portions of the first circular ridges 22 and the second circular ridges 24 at the irregular positions on the metal pseudo-surface portion 17 have the highest height. The first circular ridge 22 is formed with a stepped portion 28 composed of the upper surface, and the second circular ridge 24 has a height lower than the overlapped portion. The second circular ridges 24 are formed so as to be positioned at random with a lower height than the second circular ridges 24.

As described above, in the present embodiment, the first spin pattern 18 and the second spin pattern 20 are stacked on the metal pseudo-surface portion 17 in a state where the centers: O ₁ and O ₂ are inconsistent. As a result, a larger number of circular ridges 22, 24 are formed without any regularity, and with a remarkable and complicated height difference.

  Therefore, in the tachometer substrate 10 of the present embodiment, the concentric patterns of the first spin pattern 18 and the second spin pattern 20 that are formed by screen printing, that is, each spin pattern is a metal pseudo surface portion. The spin pattern formed by machining on the upper surface of the metal product in the metal pseudo-surface portion 17 can be formed on the metal pseudo surface portion 17 more sterically and without causing moire. It can be expressed more realistically with a sufficient texture without causing the appearance defect due to.

  Therefore, in the tachometer substrate 10 according to the present embodiment as described above, the spin pattern is formed on the surface by machining even though it is formed using the printed sheet 12 made of a synthetic resin material or a glass material. A high-class feeling and a solid feeling comparable to the formed metal tachometer substrate 10 can be obtained extremely effectively.

  Further, in such a tachometer substrate 10, a color layer 13 that does not emit metallic luster is formed in a donut shape around the metal pseudo surface portion 17 that emits clear metallic luster. Since the scale 15 is formed, it is possible to advantageously prevent the reading of the scale 15 from being disturbed by the reflected light, so that better usability can be exhibited.

  In addition, as the ink for forming the first spin pattern 18 and the second spin pattern 20 as described above, among the screen inks used for screen printing, a colorless transparent or colored ink having light transmittance is appropriately selected. Among them, among them, for example, an ultraviolet curable colorless transparent ink is preferably used. By using such an ink, it is possible to perform thick embossing printing peculiar to printing using an ultraviolet curable ink without impairing the vividness of the metallic luster emitted from the light reflecting layer 14. Each of the first circular ridges 22 and each of the second circular ridges 24 of the second spin pattern 20 are advantageously thickened. As a result, the spins in the first and second spin patterns 18 and 20 are increased. The pattern becomes clearer, and the spin pattern formed by machining the surface of the metal product in the metal pseudo-surface portion 17 can be expressed with an even more realistic texture.

Further, the width of each first circular protrusion 22 of the first spin pattern 18 and each circular protrusion 24 of the second spin pattern 20, that is, the line width of the spin pattern in the first spin pattern 18: w ₁ The line width w ₂ of the spin pattern in the second spin pattern 20 is not particularly limited, but is about 0.2 to 0.5 point (0.07028 to 0.1757 mm). It is desirable that This is because it is difficult to print and form the respective spin patterns 18 and 20 having extremely small line widths: w ₁ and w ₂ below 0.2 point (0.07028 mm) with the current screen printing technology. In addition, when the line widths of the spin patterns 18 and 20: w ₁ and w ₂ exceed 0.5 points (0.1757 mm), the width of the circular ridges 22 and 24 becomes too large, Each of the spin patterns 18 formed densely by concentric circular ridges 22 and 24 having different diameters is formed on the metal pseudo-surface portion 17 in the same state as when light-transmitting ink is solidly applied. , 20 spin patterns are not easily recognized.

Further, the pitch between the first circular ridges 22 of the first spin pattern 18: P ₁ , that is, the pitch of the concentric circles of the concentric pattern that gives the first spin pattern 18 is set to a constant value as described above. However, the value is selected within the range of 0.2 to 0.8 mm, for example. This is because it is difficult to print and form spin patterns 18 having such a pitch: P ₁ of less than 0.2 mm by screen printing, and when such pitch: P ₁ exceeds 0.8 mm, they are adjacent to each other. The gap between the first circular ridges 22 becomes excessive, whereby the first circular ridges 22 having different diameters draw concentric circles, and the spin pattern of the first spin pattern 18 is densely formed. This is because the texture is lowered.

The pitch P ₂ between the second circular ridges 24 of the second spin pattern 20, that is, the pitch of the concentric circles of the concentric pattern that gives the second spin pattern 20 is an uneven value as described above. However, the value is selected as a value within the range of 0.2 to 0.8 mm, for example, similarly to the pitch P ₁ between the first circular ridges 22 of the first spin pattern 18. . This is for the same reason as described above. A plurality of types of values are appropriately selected from the values within such a range. The pitch between the plurality of first circular projections 22 of the first spin pattern 18: with respect to P _1, between the plurality of second circular projections 24 of the second spin pattern 20 Pitch: All P ₂ Even if some things are made to differ, only some things may be made to differ.

Further, the thickness of each first circular ridge 22 of the first spin pattern 18 (the dimension indicated by t _{4 in} FIG. 2) and the thickness of each second circular ridge 24 of the second spin pattern 20. (Dimensions shown by t ₅ in FIG. 2) are also appropriately selected, but they are preferably 5 μm or more. This is because the spin patterns 18 and 20 whose thicknesses t ₄ and t ₅ are less than 5 μm are too thin, and the sharpness of the spin pattern is impaired. Further, the upper limit values of the thickness: t ₄ of each first circular ridge 22 of the first spin pattern 18 and the thickness: t ₅ of each second circular ridge 24 of the second spin pattern 20 are: Although none of them is specified, the patterns 18 and 20 are appropriately determined as long as the patterns 18 and 20 do not become unnecessarily thick due to waste of ink. Further, the thickness: t ₅ of each second circular ridge 24 of the second spin pattern 20 is set larger than the thickness: t ₄ of each first circular ridge 22 of the first spin pattern 18. It is desirable.

  Furthermore, the length of the cuts 26 formed at one place or a plurality of places on the circumference of each second circular ridge 24 in the second spin pattern 20 is not particularly limited, for example, a metal pseudo surface portion. 17, the length of the cut 26 is about 0.1 to 30 mm, although it is determined as appropriate depending on the size of the formation region of the second spin pattern 20 on the surface 17. preferable. This is because if the length of the cut 26 is less than 0.1 mm, the cut 26 is too short, and the presence of the cut 26 and the first and second circular ridges 22 and 24 obtained thereby. This is because the complicated height difference cannot be fully recognized. In addition, when the length of the cut line 26 exceeds 30 mm, the cut line 26 is too long, making it difficult to give a delicate spin pattern to the second spin pattern 20. This is because there is a risk that the effect of expressing the spin pattern is significantly reduced. Moreover, in all of the many second circular ridges 24 in the second spin pattern 20, the cut 26 is provided, or only a part of them is provided with the cut 26. Also good.

By the way, in the first embodiment, each second circular ridge 24 of the second spin pattern 20 has the same width as the width: w ₁ of each first circular ridge 22 in the first spin pattern 18: w _2, and the pitch of each of the first circular ridges 22: non-uniform pitch including a size different from P ₁ : P ₂ and non-uniform length at one or more places on the circumference For example, as shown in FIG. 5, a large number of second circular ridges 24 are formed on each first circular ridge in the first spin pattern 18. 22 width: non-uniform width including a size different from w ₁ : w ₂ , cut 26 provided with non-uniform length at one or more places on the circumference, and each first circle The pitch of the ridges 22 is configured to have the same constant pitch: P ₂ as P ₁ , and such a large number The second circular pattern 24 may constitute the second spin pattern 20. The second spin pattern 20 as described above is also formed so as to be superimposed on the first spin pattern 18 formed on the metal pseudo-surface portion 17 as in the first embodiment. Can be enjoyed effectively. In addition, here, the width: w ₂ of the multiple second circular ridges 24 of the second spin pattern 20 with respect to the width: w ₁ of the multiple first circular ridges 22 of the first spin pattern 18. All things are made different, or only some are made different.

Further, for example, as shown in FIG. 6, a large number of second circular ridges 24 have a circular shape without a cut (26), and the width of each first circular ridge 22 in the first spin pattern 18: w ₁ has a non-uniform width including a width different from ₁ : w _2, and a pitch of each first circular protrusion 22: a non-uniform pitch including a size different from P ₁ : P _2. The second spin pattern 20 may be configured by such a large number of second circular ridges 24. In addition, here, the width: w ₂ of the multiple second circular ridges 24 of the second spin pattern 20 with respect to the width: w ₁ of the multiple first circular ridges 22 of the first spin pattern 18. All things are made different, or only some are made different. The pitch of the plurality of second circular projections 24 of the second spin pattern 20: P ₂ also, all, or those portions, many of the first circular projections 22 of the first spin pattern 18 pitch: is the P ₁ and different.

Further, for example, as shown in FIG. 7, a large number of second circular ridges 24 include a size different from the width: w ₁ of each first circular ridge 22 in the first spin pattern 18. Non-uniform width: w ₂ , cuts 26 provided with non-uniform lengths at one or more locations on the circumference, and pitches of the first circular ridges 22 having a size different from P ₁ uneven pitch including: configured to have a P _2, and, in such a large number of second circular projections 24, may be formed a second spin pattern 20. In this case, too, the width of the second circular ridges 24 of the second spin pattern 20 is w ₂ , whereas the width of the first circular ridges 22 of the first spin pattern 18 is w ₁ . All things are made different, or only some are made different. The pitch of the plurality of second circular projections 24 of the second spin pattern 20: P ₂ also, all, or those portions, many of the first circular projections 22 of the first spin pattern 18 pitch: is the P ₁ and different.

  Then, the second spin pattern 20 having the structure shown in FIGS. 6 and 7 is formed so as to overlap the first spin pattern 18 formed on the metal pseudo surface portion 17. As a result, the same actions and effects as those of the first embodiment can be enjoyed effectively.

Incidentally, in the first embodiment, the reference circular ridges 24a in the second spin pattern 20 center: O ₂ is the center of a number of first circular projections 22 in the first spin pattern 18: from O ₁ The second spin pattern 20 was laminated on the first spin pattern 18 in a state of being offset by a predetermined dimension on the right side in FIG. 1 in the radial direction. The misalignment direction between the second spin pattern 20 and the first spin pattern 18 is not limited to this as long as it is the radial direction of a large number of first circular ridges 22. Further, the second spin pattern 20 may be laminated on the first spin pattern 18 without such a positional deviation.

  In the first embodiment, a circular color layer 13 is formed on the surface of the printing sheet 12, and a circular light reflecting layer having a smaller diameter is formed on the color layer 13. 14 is formed so that a donut-shaped color layer 13 having a large number of scales 15 is provided around the light reflecting layer 14, but the donut-like color layer 13 is provided only around the light reflecting layer 14. The color layer 13 may be provided. The color layer 13 is not essential in the present invention.

  Furthermore, the formation region of the light reflecting layer 14 or the light shielding layer 16 on the printing sheet 12, that is, the overall shape of the light reflecting layer 14 or the light shielding layer 16 is not limited to the illustrated circular shape. Other shapes can be adopted as appropriate, and the formation region of the first spin pattern 18 and the second spin pattern 20 on the surface of the printing sheet 12 is also on the surface of the printing sheet 12. Depending on the region where the light reflecting layer 14 is formed, it is appropriately changed.

  In addition, in the first to fourth embodiments, specific examples of applying the present invention to the tachometer substrate are shown. However, the present invention is not limited to the tachometer substrate, but includes a speedometer substrate and a water thermometer. Of course, the present invention can be advantageously applied to any automotive instrument panel such as a substrate.

  In addition, the present invention can be implemented in various forms, and any of various embodiments relating to various changes, modifications, and improvements of the present invention adopted based on the knowledge of those skilled in the art. It should be understood that the present invention belongs to the category of the present invention without departing from the spirit of the present invention.

  Hereinafter, representative examples of the present invention will be shown to further clarify the features of the present invention, but the present invention is not limited by the description of such examples. Needless to say.

  First, as a sheet to be printed, a sheet to be printed made of a transparent rectangular flat plate with a thickness of 0.5 mm, which was made of polycarbonate and had a smooth surface and a back surface, was prepared. Then, an opaque screen ink [trade name: MRC black (manufactured by Mino Group)] having a black color is applied to a circular area of a predetermined size on the surface of the prepared printing sheet using a 250 mesh screen. Then, a solid color was applied by a known screen printing method, and this was dried and cured to form a color layer having a thickness of 20 μm.

  Then, using an opaque screen ink having a white color [trade name: 6100 (manufactured by Jujo Chemical Co., Ltd.)] and a 250 mesh screen, the circumference of the color layer formed on the surface of the sheet to be printed is After a short straight line extending radially at a position equidistant in the direction was screen-printed by a known method, this was dried and cured to form a large number of scales having a thickness of 20 μm.

  Next, on the upper surface of the color layer formed on the surface of the printing sheet, a screen ink that emits a silver metallic luster by reflection of light at the center (inner periphery) where many scales are not formed [trade name : MRC750 Silver (manufactured by Mino Group Co., Ltd.)] using a 250-mesh screen, coated in a circular shape by a known screen printing method, and then dried and cured to obtain a light reflecting layer having a thickness of 20 μm. Formed.

  Subsequently, an opaque screen ink having a black color [trade name: MRC black (manufactured by Mino Group)] was applied to the entire back surface of the printing sheet using a 250 mesh screen by a known screen printing method. Then, this was dried and cured to form a light shielding layer having a thickness of 20 μm.

  Thereafter, a colorless and transparent ultraviolet curable screen ink [trade name: 6100SL medium (manufactured by Jujo Chemical Co., Ltd.)] is used on the entire light reflection layer of the printing sheet, and each other by a known screen printing method. A large number of first circular ridges as shown in FIG. 3 having the same width but different diameters were printed and formed so as to draw concentric circles at a constant pitch. Thereafter, the first spins having a regular concentric pattern are cured by irradiating the multiple first circular ridges with ultraviolet rays with an ultraviolet irradiator, thereby curing the multiple first circular ridges. A pattern was formed. The line width of the first spin pattern thus formed, that is, the width of each first circular protrusion was set to 0.15 points (0.05271 mm), and the thickness was set to 10 μm. Further, a 350 mesh screen was used for forming the first spin pattern.

  Subsequently, on the first spin pattern formed on the surface of the printing sheet, the same ink as the ink that gives the first spin pattern is used, and the configuration as shown in FIG. That is, although the width is the same as each first circular protrusion in the first spin pattern, the pitch is different, and a cut having a non-uniform length is provided at one or more positions in the length direction. A large number of second circular ridges were printed and formed. In addition, as shown in FIG. 1, such a large number of second circular ridges have their centers from the centers of the many first circular ridges in the first spin pattern. It was designed to be offset by 0.2 mm in the radial direction. In addition, the length of the cut formed in each of these many second circular ridges is set to a non-uniform length within a range of 0.1 to 30 mm, and the pitch of each second circular ridge is set to 0. Within the range of 3 to 2.0 mm, the pitches of the first circular ridges were different in size from those different from the pitch. Furthermore, the thickness of each 2nd circular protruding item | line was 10 micrometers.

  After that, as described above, the second circular ridges are irradiated with ultraviolet rays with an ultraviolet irradiator on the multiple second circular ridges laminated on the first spin pattern. Was cured. Thus, the second spin pattern having an irregular concentric pattern was formed so as to be superimposed on the first spin pattern having a regular concentric pattern. In forming the second spin pattern, a 350 mesh screen was used.

  Thus, a light reflecting layer and a color layer having a large number of scales are laminated on the surface of the printing sheet, while a light shielding layer is formed on the back surface thereof, and a metal pseudo surface is provided on the surface of the printing sheet. On the other hand, a target automotive instrument panel was obtained in which the first spin pattern and the second spin pattern were integrally laminated on the metal pseudo-surface.

  Then, when the obtained instrument panel for an automobile was visually observed from the surface, a bright silver metallic luster was emitted from the surface by the reflection of light. Similar to the spin pattern formed by machining on the upper surface of the product, it was recognized that a spin pattern having a more three-dimensional and high texture was formed. Furthermore, it was confirmed that such a surface had almost no moiré pattern that did not appear on the actual metal surface. From this, in the automotive instrument panel having the structure according to the present invention, the metal surface cut by machining without any deterioration in appearance due to the occurrence of moiré is expressed more realistically with a higher texture. Getting can be clearly recognized.

It is plane explanatory drawing which shows one Embodiment of the instrument panel for motor vehicles according to this invention. It is principal part expansion explanatory drawing in the II-II cross section of FIG. It is a figure for demonstrating an example of the 1st spin pattern formed in the instrument panel for motor vehicles shown by FIG. 1, Comprising: Only this 1st spin pattern was formed on the surface of a to-be-printed sheet. It is a plane explanatory view of a screen printed matter. It is a figure for demonstrating an example of the 2nd spin pattern formed in the instrument panel for motor vehicles shown by FIG. 1, Comprising: Only this 2nd spin pattern was formed on the surface of a to-be-printed sheet. It is a plane explanatory view of a screen printed matter. It is a figure corresponding to FIG. 4 for demonstrating another example of the 2nd spin pattern formed in the instrument panel for motor vehicles according to this invention. It is a figure corresponding to FIG. 4 for demonstrating another example of the 2nd spin pattern formed in the instrument panel for motor vehicles according to this invention. It is a figure corresponding to FIG. 4 for demonstrating the other example of the 2nd spin pattern formed in the instrument panel for motor vehicles according to this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Tachometer board | substrate 12 Printed sheet 13 Color layer 14 Light reflection layer 15 Scale 16 Light-shielding layer 17 Metal pseudo surface part 18 First spin pattern 20 Second spin pattern 22 First circular ridge 24 Second circular ridge 26 Cut 28 steps

Claims (2)

An automotive instrument panel with a metal pseudo-surface that simulates the metal surface,
A printing sheet made of a transparent flat plate;
The surface of the printing sheet consists of an ink layer formed by applying a screen-printed ink that emits a metallic luster by reflection of light, and reflects the light irradiated from the surface side of the printing sheet, A light reflection layer that makes the surface of the printing sheet the metal pseudo-surface by emitting a metallic luster;
An ink layer formed by applying a non-transparent ink by screen printing on the entire back surface portion of the printed sheet corresponding to the formation site of the light reflecting layer on the surface of the printed sheet, A light shielding layer that prevents irradiation light from the surface side of the sheet from passing through the light reflecting layer and increases the amount of light reflected by the light reflecting layer;
A pattern formed by screen printing using a light-transmitting ink on the light reflection layer, and a plurality of circles having different diameters are arranged on a concentric line with the same line width. And a first spin pattern having a regular concentric pattern drawn with a constant pitch, and
A pattern printed by screen printing using light-transmitting ink so as to be superimposed on the first spin pattern, and both the line width and pitch are the first spin pattern A plurality of circles having different diameters including a circle different from the circle constituting the regular concentric pattern, or at least one of a line width and a pitch having one or a plurality of cuts On the other hand, a second spin pattern having an irregular concentric pattern in which a plurality of circles having different diameters including a circle different from the circle constituting the regular concentric pattern is drawn concentrically ,
And the center of a reference circle made up of any one of a number of circles of different diameters constituting the irregular concentric pattern of the second spin pattern is the first spin pattern. The second spin pattern is placed in the first spin pattern in a state in which it is positioned so as to be biased in one radial direction from the centers of a plurality of circles having different diameters constituting the regular concentric pattern. An automotive instrument panel, characterized by being disposed on a spin pattern. Opaque ink having a color that does not emit a metallic luster due to light reflection is solidly applied by screen printing around the portion where the light reflecting layer is formed on the surface of the printed sheet. 2. The scale according to claim 1, wherein a non-emissive color layer is formed, and a scale is provided on the color layer by screen printing with an opaque ink different from the ink forming the color layer. Instrument panel for automobiles.

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