JP6490983B2 - Ruler manufacturing method - Google Patents

Description

The present invention relates to a ruler manufacturing method in which the color of a specific scale line to be conspicuous is different from that of other scale lines so that the scale lines can be easily read.

  In order to make it easy to read the scale line, it is differentiated by changing the length and thickness of the scale line. For example, a mark such as ▲ (triangle) or ● (circle) is added to the scale line every 1 cm. A ruler is known. However, none of the graduation lines are the same color (same version), so it was not sufficient in terms of readability.

  For this reason, a ruler as shown in Patent Document 1 has been proposed as a conventional technique using two or more colors for the graduation line. This ruler is intended to prevent the visibility of scale lines and the like from being affected by the color of the background, and has a translucent ruler body and one end in the width direction of the ruler body. In a ruler provided with a scale line provided along the scale line, the scale line is displayed in a color in which the brightness on both sides is distinguished from each other with the center in the width direction as a boundary. is there.

  However, the ruler disclosed in Patent Document 1 divides each graduation line into a bright color such as white and a dark color such as black by dividing the left and right halves into black scales when the object to be measured or the background is whitish. The white scale can be used when the object to be measured or the background is dark, and each scale line is composed of the same color combination and does not emphasize a specific scale line in the scale. . Therefore, the visibility is not so good, and this ruler is still not sufficient in terms of readability.

JP 2011-126058 A

Therefore, the present invention has been made in view of the above-described conventional problems, and emphasizes by changing a specific scale line to be particularly conspicuous in the scales to a color different from the colors of the other scale lines. Thus, it is an object to provide a ruler manufacturing method with good visibility and easy reading.

In order to achieve the above object, the invention according to claim 1 is characterized in that a plurality of scale lines inverted for back printing are provided on the back surface of at least one linear edge of a transparent ruler body made of synthetic resin. The first step is to print the first color as a solid color at intervals, otherwise the first color is printed, and the second color as a solid color, leaving only the graduation line portion of the scale color to be changed on the first color printing surface. A second step of printing, and a third step of printing the third color by putting the color of the graduation line to be conspicuous in the portion of the graduation line left unfilled in the second color. .

The invention according to claim 2 in the production method of the ruler according to claim 1, the first color as well as white Nukinishi multiple gridlines as for surface printing, a fourth color printing otherwise as solid And a fourth step.

According to a third aspect of the present invention, in the ruler manufacturing method according to the first or second aspect , the scale line whose color is to be changed is a scale line in units of 1 cm.

According to a fourth aspect of the present invention, in the ruler manufacturing method according to the third aspect , the scale line whose color is to be changed is red.

The present invention is as described above, and according to the first to fourth aspects of the present invention, a specific graduation line to be particularly conspicuous in the graduation is conspicuous such as red which is different from the colors of the other graduation lines. Emphasizing by changing to a color, it is possible to obtain a ruler manufacturing method with good visibility and easy reading. Also in manufacturing, it is only necessary to print the first to third colors in accordance with the first to third steps, the manufacturing is easy, and the manufacturing cost can be reduced.

It is a perspective view of the ruler which concerns on one embodiment of this invention. It is a top view of a ruler. It is a bottom view of a ruler. It is drawing which showed the manufacturing process of a ruler, (A) is the whole bottom view for demonstrating a 1st process, (B) is the elements on larger scale, (C) is a cross section along the CC line of (B). FIG. It is drawing which showed the manufacturing process of a ruler, (A) is the whole bottom view for demonstrating a 2nd process, (B) and (C) are the elements on larger scale, (D) is DD of (C). It is sectional drawing which follows a line. It is drawing which showed the manufacturing process of a ruler, (A) is the whole bottom view for demonstrating a 3rd process, (B) and (C) are the elements on larger scale, (D) is DD of (C). It is sectional drawing which follows a line. It is drawing which showed the manufacturing process of a ruler, (A) is the whole bottom view for demonstrating a 4th process, (B) and (C) are the elements on larger scale, (D) is DD of (C). It is sectional drawing which follows a line. It is a drawing showing a conventional ruler, (A) is a partially enlarged view showing a non-defective printed example with no deviation on the graduation line to be conspicuous, (B) is a BB line of (A) It is sectional drawing which follows. In the drawing showing the conventional ruler, (A) is a partially enlarged view showing an example of a defective product in which the scale line to be conspicuous is printed due to a deviation and the width of the scale is uneven, and (B) is ( It is sectional drawing which follows the BB line of A). In contrast with the conventional ruler as described above, (A) is a partially enlarged view of the ruler according to one embodiment, and (B) is a cross-sectional view taken along the line DD of (A). In contrast with the conventional ruler as described above, (A) is a partially enlarged view of the ruler according to one embodiment, and (B) is a cross-sectional view taken along the line DD of (A).

  Hereinafter, a ruler according to an embodiment of the present invention will be described with reference to the drawings. For the convenience of explanation here, terms are defined. “Scale line” is a line that is graduated on the straight line part that constitutes the scale, “Scale” is a set of signs in which combinations of scale lines are regularly arranged, “ “Scale width” refers to the interval between adjacent scale lines.

  FIG. 1 is a perspective view of a ruler according to an embodiment. Here, only the outer shape of the ruler is shown, and the scales provided on the front surface (upper surface) and the rear surface (lower surface) are omitted in the drawing. The ruler 1 includes a ruler body 2. The ruler body 2 has a rectangular plate shape with a predetermined thickness W made of a transparent synthetic resin. One edge portion 2a along the longitudinal direction of the surface of the ruler main body 2 (obliquely upward in FIG. 1) is cut out to be a downwardly inclined tapered surface so that a line can be easily drawn. FIG. 2 is a plan view of the ruler, and FIG. 3 is a bottom view of the ruler.

  On the surface in the longitudinal direction of the edge 2a on the surface of the ruler body 2, a plurality of scale lines 3 to 5 are provided at equal intervals as shown in FIG. These graduation lines are from a graduation line (small unit) 3 with an interval of 1 mm, a graduation line (medium unit) 4 with a slightly longer interval of 5 mm, and a graduation line (large unit) 5 with a slightly longer interval of 10 mm. It has become. The scale lines 3 and 4 are displayed in black, and the scale line 5 is displayed in red so that it can be easily noticed. A mark 6 (circle) is attached to the end of the scale line 4 which is not on the edge side. A number 7 indicating the position of the scale is provided in the vicinity of the scale line 5. Here, 0, 1, 2, 3... Is provided every 10 mm (1 cm), and the background of the black solid 8 is white. On the contrary, the numbers of 0, 5, 10,... And 5 cm are displayed in black on a white background that is rounded.

  A plurality of similar scale lines 13 to 15 are also provided at equal intervals on the upper surface of the other edge along the longitudinal direction of the surface of the ruler body 2. In the vicinity of the scale line 15, the numeral 16 indicating the position of the scale changes the direction of 90 ° with respect to the numeral 7, that is, when the ruler 1 is oriented vertically from the figure, the measurement target is located on the left side. It is provided so that things can be read well on the scale lines 13-15. Here, 0, 1, 2, 3,... Are provided every 1 cm, and the numbers of 0, 5, 10,... And 5 cm are larger than others, 0 is displayed in red, and 5, 10 is displayed in black. Has been. A black separate line 17 is provided in the longitudinal direction on the non-edge side of these numbers 16 with a transparent portion 18 interposed between the black solid 8 and the ground.

  On the other hand, as shown in FIG. 3, a plurality of scale lines 23 to 25 are also provided at equal intervals on the longitudinal surface of the edge 2 a on the back surface of the ruler body 2. These scale lines 23 to 25 are provided in the same manner as the scale lines 3 to 5 on the front surface side, and the numbers 26 are also reversed so that the arrangement is from the right side, or is not solid black or white. Otherwise, it is displayed in the same way as the numeral 7.

  A plurality of similar graduation lines 43 to 45 are also provided at equal intervals on the upper surface of the other edge along the longitudinal direction of the back surface of the ruler body 2. These scale lines 43 to 45 are provided in the same manner as the scale lines 13 to 15 on the surface side, and the numbers 46 are also inverted and displayed in the same manner as the numbers 16 except that the arrangement is from the left side. Yes.

  As described above, the scale lines 3 to 5 and 13 to 15 and the scale lines 23 to 25 and 43 to 45, the numbers 7 and 16, and the numbers 26 and 46 provided on the front and back surfaces of the ruler body 2 are displayed in reverse. The only difference is that only a part of the numbers on one edge side of the surface is blanked.

  In this example, the ruler 1 is a rectangular plate ruler as shown in the figure, but the shape is not limited to a rectangle as long as the scale lines 3 to 5 can be provided. For example, a triangle ruler, a T-type ruler, a protractor, or the like may be used.

  The ruler body 2 is most preferably made of a transparent resin through which the object to be measured can be seen, but a translucent resin can also be used if it can be seen. When the ruler body 2 is made of a synthetic resin, it is preferable to use a thermoplastic resin such as a vinyl chloride resin, a methacrylic resin, or a PET resin.

  The operation of the ruler 1 of this embodiment will be described. In the measurement work using the ruler 1, depending on the object to be measured, when measuring the horizontal dimension, for example, the edge of the ruler body 2 where the scale lines 3 to 5 are provided is used as the object to be measured. Apply from above and measure the length of the relevant part. At this time, since the graduation lines 3 to 5 are composed of the black graduation lines 3 and 4 of the small unit and the medium unit and the red graduation line 5 of the large unit, the graduation 5 of the large unit which is particularly conspicuous can be grasped. Measurement can be performed instantaneously and measurement can be performed very easily. On the other hand, when measuring the dimension in the vertical direction, change the ruler, apply the edge of the ruler body 2 with the scale lines 13 to 15 to the object to be measured from above, and adjust the length of the corresponding part. Measure. In this way, the number 16 on the scale line is displayed vertically, so that it is easy to read.

  Thus, in the ruler 1 of the present embodiment, the small unit and medium unit scale lines 3 and 4 are black as described above, but the large unit scale line 5 and the like are red so that they are easily noticeable. Become. Therefore, it becomes easy to measure the object to be measured. Of course, since the ruler 1 has the scale lines 23 to 25 and the like on the back surface of the ruler main body 2, it is possible to measure with this scale line.

  Next, a method for manufacturing the ruler 1 will be described with reference to FIGS.

(First step)
First, as shown in FIGS. 4A to 4C, on the back surface of the ruler main body 2, the scale lines 3 to 5 etc. which are reversed for back printing are whitened, and other than that, the first color is printed as a solid. . Reference numeral 50 denotes the first color printing layer. Printing is performed by screen printing, for example. That is, in this first color printing, since all printing is performed from the back side of the ruler main body 2, the scale lines 3 to 5 are reversed for back printing. The scale lines 3 to 5 and the like, the number 7 and the like, or although not shown, the characters are whitened and the others are solid. The ink to be used is preferably opaque and highly concealed. For example, a mixture of about 30% of black pigment or fine particle aluminum powder having an average particle diameter of 5 to 8 μm is used. Here, solid printing is performed in a color that looks like gold by adding an orange pigment to silver mixed with 30% fine particle aluminum powder.

(Second step)
Next, as shown in FIGS. 5 (A) to (D), the second color printing is performed on the first color printing layer 50 by leaving only the graduation line portion where the color of the graduation line is to be changed in white. To do. Reference numeral 60 denotes the second color printing layer. FIG. 5B shows the second single color viewed from the bottom, and FIG. 5C shows the first color + second color viewed from the bottom. That is, in the printing of the second color, only the portion where the color of the scale line is to be changed is left unfilled and solid printing is performed. When the first color is light, it is preferable to use a dark color such as black or dark blue. On the contrary, when the first color is dark, it is preferable to use a light color such as white or yellow because the scale line is clearly visible. Here, solid printing in black is used. As clearly shown in FIG. 5C, the whitened portion 61 is 0.4 mm to 0.6 mm thicker than the whitened portions such as the first color scale lines 3 to 5. The length is increased by 0.2 mm to 0.3 mm.

(Third step)
Next, as shown in FIGS. 6A to 6D, the color of the scale line to be conspicuous such as red is put in the scale line portion 61 left unfilled in the second color printing, and the third color printing is performed. do. Reference numeral 70 denotes the third color printing layer. FIG. 6B shows the third single color seen from the bottom, and FIG. 6C shows the first to third colors seen from the bottom. In the printing of the third color, the color of the graduation line 5 to be conspicuous is put in the portion 61 whitened in the second color. Here, printing is in red.

(4th process)
Next, as shown in FIGS. 7A to 7D, scales, numbers, characters, etc. are whitened as in the first color for surface printing, and the fourth color is printed as a solid other than that. Reference numeral 80 denotes the fourth color printing layer. FIG. 7B shows the fourth single color viewed from the bottom, and FIG. 7C shows the first to fourth colors viewed from the bottom. In the printing of the fourth color, as in the first color, the scale lines, numbers, characters, and the like are printed out with white ink on the surface with highly concealed ink. Here, solid printing is performed in silver. Since the part where the color is changed comes to the same part as the first color, the length, thickness and position of the scale line are the same as those of the first color.

  In this way, the ruler 1 shown in FIGS. 2 and 7 having the printing layers 50 to 80 for the first to fourth colors is obtained. That is, the ruler 1 is obtained in which the front and back scale lines 5, 15, 25, 45 are red and the other scale lines are black.

  8 and 9 show an example in which two colors are printed on a conventional ruler. As shown in FIG. 8, there is no problem as a non-defective product if it is printed without any misalignment on the graduation lines to be made conspicuous. The eye width is the same as 1.0 mm. However, as shown in FIG. 9, the red graduation line that should be conspicuous in the printing of the second color should be printed at the center of the black graduation line, but if it is printed with a deviation of 0.2 mm to the left, It becomes a defective product with variations in width. Therefore, if a deviation occurs in the graduation line in the conventional method, it will be reflected as it is.

  According to this manufacturing method, as shown in FIG. 10, even if the printing of the third color is shifted by 0.2 mm, the eye width is not shifted visually, and the accuracy of the ruler 1 does not decrease. Furthermore, according to this manufacturing method, as shown in FIG. 11, even if the second color is shifted 0.2 mm in the opposite direction to the right and the third color is shifted to the left, the visual width does not vary.

  As described above, according to the manufacturing method of the present embodiment, the scales do not appear to be misaligned even if the misalignment of each color occurs by about 0.2 mm due to the printing accuracy or the like.

  In the manufacturing method according to this embodiment, the fourth step is used. However, this fourth step can be omitted if it is not always necessary to place a scale on the back surface of the ruler body 2. Further, in this embodiment, red is shown as the color of the graduation line to be conspicuous, but it may be other than red as long as it is a conspicuous color, and the graduation line to be conspicuous is a graduation line of 1 cm, but this is also an example. Of course, other configurations may be used as long as the technical matters described in the claims are not changed, such as a scale line every 0.5 mm or a scale line every 5 cm. It is.

1 Ruler 2 Ruler main body 3 to 5, 13 to 15, 23 to 25, 43 to 45 Scale line 6 Mark 7, 16, 26, 46 Number 8 Solid black 17 Separate line 18 Transparent portion 50 First color printing layer 60 2 Color printing layer 70 Third color printing layer 80 Fourth color printing layer

Claims (4)

  A transparent ruler body made of synthetic resin is printed on the back of at least one straight edge with a plurality of scale lines that are reversed for back-printing at equal intervals. A first step, a second step of printing the second color as a solid, leaving only the portion of the graduation line to be changed on the printed surface of the first color, and a scale remaining on the printing surface of the second color And a third step of printing the third color by putting the color of the scale line to be conspicuous in the line portion, and a ruler manufacturing method. The method for producing a ruler according to claim 1 , further comprising: a fourth step in which a plurality of graduation lines are blanked as in the first color for surface printing, and a fourth color is printed as a solid otherwise. A ruler manufacturing method characterized. 3. The ruler manufacturing method according to claim 1 or 2 , wherein the scale line whose color is to be changed is a scale line in units of 1 cm. 4. The ruler manufacturing method according to claim 3 , wherein the scale line whose color is to be changed is red.

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