JP2018144252A - Method for manufacturing relief - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a relief by simple steps.SOLUTION: A method for manufacturing a relief having a plurality of color tone parts different in color tone includes: a step of manufacturing an original shape of a relief having the same color tone as a color tone part with the largest area in the color tone parts (S10 to S14); and a step of performing inkjet printing on a surface of the original shape (S16).SELECTED DRAWING: Figure 2

Description

  The present invention relates to a method for manufacturing a relief.

  2. Description of the Related Art Conventionally, there are known reliefs that reproduce paintings and sculptures that are works of art, and reliefs that restore a three-dimensional shape based on images of people, landscapes, or natural terrain such as mountains and valleys.

  Patent Document 1 discloses an invention of a method for manufacturing a relief. The invention described in Patent Document 1 is transparent or white on the entire original surface of the relief in order to reduce the influence of the pattern and texture of the material of the relief material and prevent the accuracy of expression by printing from being lowered. Apply the base coating. Then, an image corresponding to the engraving is formed by performing printing on the surface of the original coated base with an ink jet printer head.

JP 2008-221835 A

  The invention described in Patent Document 1 described above has a problem that the manufacturing process and the cost are increased by that amount because it is necessary to coat the entire surface of the original surface with the base. Then, an object of this invention is to provide the method of manufacturing a relief with a simple structure.

  The method for producing a relief according to the present invention includes a step of producing a relief original having the same color tone as the color tone portion having the largest area among the plurality of color tone portions in the method for producing a relief having a plurality of color tone portions having different color tones, and And coloring the surface of the original shape by ink jet printing.

  With this configuration, since the original shape having the same color tone as the color tone portion having the largest area in the relief to be manufactured is colored, the surface color of the large area may be finely adjusted. The color material can be saved, the manufacturing process can be simplified, and the working time can be shortened.

  The method for producing a relief according to the present invention is a method for producing a relief having a plurality of color tone parts having different color tones, a step of producing a relief original having the same color tone as the brightest color tone part among the plurality of color tone parts, And coloring the surface of the original shape by ink jet printing.

  The surface color of the relief is expressed by subtractive color mixing. The color of the surface of the relief can be expressed by a configuration in which the color is superimposed on the original shape having the same color tone as the brightest color tone portion in the relief to be manufactured. Further, since the color is superimposed on the brightest color tone portion, it is not necessary to form a white background.

  In the method for producing a relief according to the present invention, in the step of producing the original form of the relief, the original form of the relief may be produced by resin molding. In this way, by forming the original form with a resin, it is possible to easily form an original form with a desired color, and to easily mass-produce the original form of the relief.

  In the method for producing a relief according to the present invention, different color portions may be colored simultaneously in the coloring step. By simultaneously coloring different tone parts, the manufacturing process can be shortened. Different colors can be colored at the same time because the brightest color tone is overlaid, so there is no need to coat the base to secure the reflected light. is there.

  The method for producing a relief according to the present invention includes a step for producing a relief original by resin molding and a step for coloring the surface of the original by ink jet printing in a method for producing a relief imitating a metal. Thus, by forming the original with a resin, it is possible to easily form an original with a desired color, and it is possible to manufacture a relief imitating a metal simply and inexpensively.

  In the method for producing a relief according to the present invention, the step of producing the original shape may comprise producing a relief original shape with a bronze-colored resin, and the step of coloring may include forming a copper color on the surface of the original shape by the inkjet printing. It may be colored. With this configuration, a relief simulating a bronze relief can be manufactured. A bronze relief having a patina is produced by covering copper with a turquoise rust of copper (green blue). In the present invention, on the contrary, the bronze relief is colored with respect to the original bronze color. Thereby, since the dark color tone is superimposed on the bright color tone, the background is unnecessary, the manufacturing process is simplified, and the working time can be shortened.

  Further, in the method for producing a relief according to the present invention, the step of producing the original shape comprises producing a relief original shape with a silver resin, and the step of coloring comprises coloring the black or gray by ink jet printing on the surface of the original shape. May be. With this configuration, a relief simulating a tanned silver relief can be produced. By coloring black or gray with a dark color tone against a silver-colored original color with a light color tone, a base is unnecessary, the manufacturing process is simplified, and the working time can be shortened.

  In the relief manufacturing method of the present invention, an ultraviolet curable ink may be used in the coloring step. With this configuration, the ink applied to the surface of the relief can be quickly cured, and color bleeding can be reduced.

  In the method for producing a relief according to the present invention, in the coloring step, the original shape is held in a state where the original shape is tilted and held so that the upper surface of the original shape is nearly parallel to the print head that discharges the coloring material. Coloring may also be performed.

  With this configuration, the distances from the print head to the upper surface of the original relief can be made substantially equal, and the degree of diffusion of the coloring material discharged from the print head can be made substantially constant. Since the original shape of the relief has irregularities on the surface, it is difficult to define a strict parallel state between the upper surface of the relief and the print head. “Parallel” means that the upper surface of the original shape of the relief is substantially parallel. For example, the upper surface of the original shape can be divided into four equal parts, and the parallelism can be defined by equalizing the average distance between the upper surface of each of the four portions and the print head. “To be close to parallel” means that when the relief is held tilted, its upper surface becomes close to parallel when it is held tilted.

  The manufacturing method of the relief of this invention may have the process of coating with respect to the said relief after the said process to color. With this configuration, it is possible to reduce a risk that the coloring material applied to the surface of the relief is peeled off.

  In the method for producing a relief according to the present invention, in the step of producing the original form of the relief, the original form of the relief may be produced by processing a metal.

  According to the present invention, the manufacturing process of the relief can be simplified and the cost can be reduced.

It is a figure which shows the example of the relief manufactured by this Embodiment. It is a flowchart which shows the process of the manufacturing method of the relief of this Embodiment. It is a figure which shows the example of the original form of a relief. It is a figure which shows the example of the printer used for printing of a relief.

Hereinafter, a method for manufacturing a relief according to an embodiment of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram showing an example of a relief 10 manufactured in the present embodiment. The relief 10 is an embossed product whose surface is formed in an uneven shape. Although shown in black and white in FIG. 1, the relief 10 has a plurality of different color tone portions having different color tones. The relief 10 of the present embodiment is made of resin. In the present embodiment, a resin-made relief 10 is manufactured by imitating a bronze relief, a tanned silver relief, or the like. In the bronze relief, blue-green rust (greenish blue) produced by oxidation of copper is coated on copper and is based on a bronze color tone. I can see the color. The tanned silver relief is prepared by immersing silver in a solution containing sulfur to chemically react silver and sulfur to adjust the black portion, and has a black and silver color tone.

  FIG. 2 is a flowchart showing the steps of the method for manufacturing the relief 10 according to the present embodiment. First, a relief (master relief) to be manufactured is scanned to generate digital data (S10). Next, based on the digital data, the color tone portion having the largest area among the plurality of color tones in the relief 10 and the color (pantone number) of the color tone portion are specified (S12). The color specified here is determined as the original color of the relief.

  Further, each color of a plurality of color tones different from the color tone having the largest area is specified, and the color (pantone number) to be added to the original color is specified in order to express the color of each color tone ( S12). The color specified here is determined as the printing color. The print color is difficult to calculate by subtracting the original color digital data from the digital data of the master relief color. ) To obtain the print data by changing the overall color tone. If the colors are different, fine adjustment is performed with the output application of the printer. Note that it is preferable to generate overprint data of one pixel or more on the outer periphery of the print color digital data so that an unprinted portion does not occur even if a slight misalignment occurs.

  Subsequently, the relief original 12 is manufactured by resin molding (S14). The relief original 12 is formed by a so-called injection molding method in which resin pellets are melted and discharged into a mold. As the resin used at this time, a material that develops the original color after molding is used. FIG. 3 is a diagram showing an example of the original shape 12 of the relief.

  Next, printing is performed on the surface of the shaped relief original 12 (S16). FIG. 4 is a diagram illustrating an example of the printer 20 used for printing. The printer 20 is a flatbed printer 20. The relief original 12 is placed on the flat bed 22 for printing. An example of the printer 20 is an ink jet type printer 20 that performs printing by landing an ultraviolet curable ink on a printing material and irradiating the ultraviolet ray to cure the ink. The printer 20 has a built-in print head 24 indicated by a one-dot chain line, and the print head 24 discharges ink to the relief original 12.

  As shown in FIG. 3, the relief original 12 has irregularities, and the height of the upper surface thereof is not constant. The surface indicated by the dotted line L1 indicates the lower surface of the relief original 12 that contacts the mounting surface when the relief 10 is mounted. An alternate long and short dash line L2 is a reference plane parallel to the lower surface of the relief 10, and for example, the print head 24 is located on this reference plane.

  The distance between the upper surface of the relief 10 and the reference surface varies depending on the location. For example, in the relief original 12 shown in FIG. 3, the distance D1> the distance D2> the distance D3. Depending on the design of the relief 10, there are places where the interval is locally widened or narrowed, but in the example shown in FIG. 3, the relief original shape 12 tends to become narrower toward the right side. In the relief original form 12 as shown in FIG. 3, the upper surface of the relief original form 12 is made substantially parallel to the reference surface and the mounting surface by lifting the left side in FIG. Thereby, when the original pattern 12 of the relief is placed on the flat bed 22 of the printer 20, the distance between the upper surface of the original pattern 12 and the print head 24 can be made substantially constant regardless of the location. A jig is used to hold the relief pattern 12 at an angle.

  The coloring of the relief original 12 may be performed by changing the timing of coloring, such as coloring one of the bright tone portion and the dark tone portion and then coloring the other, or the bright tone portion. It is also possible to color both the dark tone portion and the dark tone portion at the same time. If the original color is slightly darker than the actual color, the relief original 12 is printed with a white ink, and a bright color tone is applied from above.

  At this time, if white ink is printed on the entire surface, the density of white on the standing surface is lowered, which may result in an unnatural color. In order to prevent this, the print data is changed to gray scale, and the gradation of black and white is inverted, and then the inverted data is replaced with white to generate print data of white ink. As a result, it is possible to print on a light color portion before conversion to a gray scale, and to reproduce a natural color.

  When printing on the original pattern 12 with the printer 20, in a place where the distance (head gap) between the upper surface of the relief original pattern 12 and the print head 24 is large, the scanning speed is decreased to reduce ink scattering. Also good.

  After coloring the surface of the original shape 12 of the relief, the surface of the relief 10 is coated (S18). For coating, a coating agent for preventing corrosion such as lacquer or acrylic may be used. This coating agent is also used as a corrosion inhibitor for bronze images. Further, a Teflon (registered trademark) type or an inorganic coating agent such as siloxane may be used for coating.

  In the present embodiment, the example of manufacturing the relief original 12 using a resin has been described. However, the relief original 12 may be manufactured by processing a metal. In this case, the metal may be dissolved and then poured into a mold and then cooled, or may be formed by cutting the surface of the metal.

(Second Embodiment)
Next, the manufacturing method of the relief 10 concerning 2nd Embodiment is demonstrated. The steps of the method for manufacturing the relief 10 according to the second embodiment are basically the same as the method for manufacturing the relief 10 according to the first embodiment shown in FIG. The method of determining the colors of the ten original shapes 12 is different from that of the first embodiment.

  In the second embodiment, based on digital data obtained by scanning the master relief, the lightest color tone portion of a plurality of color tones in the relief 10 and the color (pantone number) of the color tone portion are reliefd. The colors of the ten original shapes 12 are determined (S12).

  The process after determining the original color of the relief 10 is the same as that in the first embodiment. However, in the second embodiment, the brightest color tone portion is the original color of the relief 10. When coloring the original shape 12 of the relief, since a darker color than the original color is superimposed, the background with white ink is unnecessary. Therefore, in the second embodiment, it is possible to simultaneously color both the bright tone portion and the dark tone portion in the entire relief original 12.

(Effect of embodiment)
(1) The manufacturing method of the relief 10 of 1st Embodiment is the process (S10-S14) which manufactures the original form 12 of the relief which has the same color tone as the color tone part with the largest area among several color tone parts, And a step (S16) of performing inkjet printing on the original surface.

  With this configuration, since the original shape having the same color tone as the color tone portion having the largest area in the relief 10 to be manufactured is colored, the surface color of the large area may be finely adjusted. The color material can be saved, the manufacturing process can be simplified, and the working time can be shortened. Moreover, since the bronze relief is made by applying a corrosive for making patina, there are drawbacks that it takes time and the quality is not stable. The tanned silver relief is produced by immersing silver in a solution containing sulfur and adjusting the black portion using an abrasive, and therefore has the same disadvantages as the bronze relief. According to the method for manufacturing the relief 10 of the first embodiment, the relief 10 having the same quality can be mass-produced. If the original color is slightly darker than the actual color, the relief original 12 is printed with a white ink, and a bright color tone is applied from above.

(2) The method of manufacturing the relief 10 according to the second embodiment includes a step (S10 to S14) of manufacturing a relief original 12 having the same color tone as that of the brightest color tone portion among a plurality of color tone portions; And a step (S16) of performing inkjet printing on the surface.

  With this configuration, the color of the surface of the relief 10 can be expressed by a configuration in which colors are superimposed on the original shape having the same color tone as the brightest color tone portion in the relief 10 to be manufactured. In addition, since the colors are superimposed on a bright color tone, no pre-processing is required to brighten the background with white ink or the like. The relief may not have a flat surface but may have an acute standing surface. When the standing surface is an acute angle, it is difficult to perform printing, and it is difficult to form a white ink base. However, according to the second embodiment, it is not necessary to attach a base, so the shape of the relief Regardless, the relief 10 can be manufactured. That is, although it is difficult to print an acute-angle standing surface, the relief 10 can be manufactured by utilizing the original color for such a standing surface. Moreover, according to the manufacturing method of the relief 10 of 2nd Embodiment, the relief 10 of the same quality can be mass-produced.

(3) In the manufacturing method of the relief 10 according to the present embodiment, in the step (S14) of manufacturing the relief original 12, the relief original 12 is manufactured by resin molding, so that the cost can be reduced.

(4) In the method of manufacturing the relief 10 according to the second embodiment, different color tone portions can be colored simultaneously in the inkjet printing step (S16), and the manufacturing process can be shortened. Also in the manufacturing method of the relief 10 of 1st Embodiment, when coloring a deep color with respect to a bright color tone part, a different color tone part can be colored simultaneously.

(5) In the manufacturing method of the relief 10 according to the present embodiment, a relief simulating a metal such as bronze relief or tanned silver is manufactured. Since the original shape of the relief is manufactured by resin molding, and the surface of the original shape is colored by ink jet printing, the original shape having a desired color can be easily formed using a resin, and a relief imitating a metal is easily and inexpensively manufactured. be able to.

(6) In the manufacturing method of the relief 10 of this Embodiment, the relief imitating copper with which the patina was produced | generated is manufactured. A relief bronze resin is manufactured with a light-colored bronze resin, and a dark-colored copper color is colored on the surface of the original by inkjet printing, eliminating the need for a groundwork, simplifying the manufacturing process, and reducing work time. .

(7) In the manufacturing method of the relief 10 of the present embodiment, a relief original is manufactured with a light-colored silver resin that manufactures a relief imitating tanned silver, and a dark tone black or Since gray is colored, a base is unnecessary, the manufacturing process is simplified, and the working time can be shortened.

(8) Since the method of manufacturing the relief 10 of the present embodiment uses the ultraviolet curable ink in the inkjet printing step (S16), the ink applied to the surface of the relief 10 can be quickly cured, Color bleeding can be reduced. Further, since the ink can be cured by irradiating ultraviolet rays, a drying step is not necessary.

(9) In the method of manufacturing the relief 10 according to the present embodiment, in the ink jet printing step (S16), the original shape 12 is arranged so that the upper surface of the original shape 12 is nearly parallel to the print head 24 that discharges the coloring material. The original 12 is colored in a state where a part of the lower surface is lifted and the original 12 is tilted and held.

  With this configuration, the distance from the print head 24 to the upper surface of the original pattern 12 of the relief becomes substantially equal, and the degree of diffusion of the coloring material discharged from the print head 24 can be made substantially constant.

(10) Since the manufacturing method of the relief 10 according to the present embodiment includes the step (S18) of coating the relief 10 after the inkjet printing step (S16), the coloring applied to the surface of the relief 10 Risk of material peeling off can be reduced. The coating step (S18) is not essential and may be omitted depending on circumstances.

(11) In the method of manufacturing the relief 10 according to the above-described embodiment, an example in which the relief original shape 12 is manufactured by molding a resin has been described. However, the relief original shape 12 may be manufactured by processing a metal. . In this case, the metal may be dissolved and then poured into a mold and then cooled, or may be formed by cutting the surface of the metal. Thereby, the relief 10 can be given a profound feeling. Since the adhesion between the metal and the ultraviolet curable ink is low, it is desirable to perform coating when using the original metal form.

(12) In the above-described embodiment, the bronze relief and the tanned silver relief are taken as examples. These reliefs have a hue in which a part of the original material such as copper or silver is discolored, and the overall hue is similar. Therefore, the coloring process can be greatly simplified by producing the original shape with the color of the color tone portion having the largest area or the brightest color tone portion. When manufacturing a relief imitating a relief having a plurality of different hues, the original color may be changed for each hue. For example, an original shape in which the color is changed for each hue may be manufactured using a technique of performing two-color molding by thermally welding different kinds of materials in a mold.

  The present invention is useful as a method for producing a relief.

10 Relief 12 Relief Original 20 Printer 22 Flat Bed 24 Print Head

Claims (11)

In a method for producing a relief having a plurality of color tone portions having different color tones,
A step of producing a relief original having the same color tone as the color tone portion having the largest area among the plurality of color tone portions;
Coloring the original surface by inkjet printing;
Relief manufacturing method comprising: In a method for producing a relief having a plurality of color tone portions having different color tones,
A step of producing a relief original having the same color tone as the brightest color tone portion among the plurality of color tone portions;
Coloring the original surface by inkjet printing;
Relief manufacturing method comprising:   The method for producing a relief according to claim 1 or 2, wherein in the step of producing the original form of the relief, the original form of the relief is produced by resin molding.   The method for producing a relief according to claim 2, wherein in the coloring step, different color tone portions are colored simultaneously. In the manufacturing method of the relief imitating metal,
Manufacturing the original shape of the relief by resin molding;
Coloring the original surface by inkjet printing;
Relief manufacturing method comprising: The step of manufacturing the original shape includes producing a relief original shape with a bronze resin,
In the coloring step, the surface of the original shape is colored with copper by the inkjet printing.
The method for producing a relief according to claim 5. The step of manufacturing the original shape includes producing a relief original shape with a silver resin,
In the coloring step, the black or gray color is colored by ink jet printing on the original surface.
The method for producing a relief according to claim 5.   The method for producing a relief according to claim 1, wherein an ultraviolet curable ink is used in the coloring step.   2. The coloring is performed on the original in a state where the original is tilted and held so that an upper surface of the original is nearly parallel to a print head that discharges a coloring material in the coloring step. The method for producing a relief according to any one of claims 8 to 10.   The method for producing a relief according to any one of claims 1 to 9, further comprising a step of coating the relief after the coloring step.   The method for producing a relief according to any one of claims 1 to 4, wherein in the step of producing the original form of the relief, metal is processed to produce the original form of the relief.

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