JP3120570B2 - Display mark formation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a display mark for translucent illumination used for electric equipment for automobiles, homes, and the like.

[0002]

2. Description of the Related Art An instrument panel of an automobile is provided with switch knobs for operating various electric devices such as an air conditioning control device and an acoustic device. As shown in FIG. 9, the switch knob includes a knob 9 which can be moved forward and backward, a switch 81, a lamp 84 for night illumination, an LED (light emitting diode) 88 for operation display, and a light guide provided above the LED 88. It has an optical lens 87 and a slider 82 for transmitting the movement of the knob 9 to the switch 81. The slider 82
Outer case 83 housed in instrument panel
And is slidably supported.

A switch 81, a lamp 84 and an LED 88 are provided on a substrate 83. On the surface of the substrate 83, the signal of the switch 81 is transmitted to the air conditioning controller 7,
And a pattern code 78 for transmission to the LED 88. The switch 81 is connected to the air-conditioning control device 7, the lamp 84, and the LED 88 via the cord 78. For example, as shown in FIG. 8, the knob 9 has a display mark 93 indicating the operation state of the air-conditioning control device 7.
0,931. The display mark 930 indicates the wind direction and the occupant, and the display mark 931 indicates the air blowing to the defroster.

In the above switch knob, when the knob 9 is pressed, the switch 81 is switched via a slider 82.
Is pressed. The signal of the switch 81 is input to the air-conditioning control device 7 through the pattern code 78, and outputs a power to the LED 88 via the same path to emit light. The operation of the air-conditioning control device 7 is displayed to the operator by the light of the LED 88.

The lamp 84 is turned on by another switch input (not shown), and is illuminated by transmission so that the position of the knob 9 can be recognized at night. The light 86 of the lamp 84 is reflected by the reflecting mirror 85, and a display mark 93 is provided from inside the knob 9.
Irradiate 0,931. As described above, the display mark indicates the operation state of the air-conditioning control device 7 depending on the presence or absence of light irradiation. Therefore, even when it is dark, such as at night, the operating state of the air conditioning control device 7 can be known (for example, Japanese Utility Model Application Laid-Open No. 64-13633).

In forming the display marks 930 and 931 on the knob 9, as shown in FIG. 10, a white ink 91 and a black ink 92 are sequentially applied to the surface of a transparent base material 90 such as an acrylic resin. Thereafter, a portion of the black ink 92 where a display mark is to be provided is removed by a laser. As a result, the display marks 930 and 931 are formed.

[0007] By the way, in view of the designability and distinctiveness of the display mark, there are cases where it is desired to color the display mark with a plurality of colors. At this time, for example, the display mark 930 is white and the display mark 931 is orange. In forming the display marks of different colors in this manner, as shown in FIG. 11, a white ink 910 and an orange ink 911 are formed on the surface of the translucent base material 90 where the display mark is to be provided and around the display mark. Apply.

Next, a translucent substrate 90 and a white ink 91
The black ink 92 is applied on the 0, orange ink 911. After that, the black ink 9 where the display mark is to be provided is provided.
2 is removed by a laser into a pattern such as a wind direction mark, a doll mark, a defroster mark, etc., and openings 920 and 921 in the shape of display marks 930 and 931 are provided as shown in FIGS. Thereby, a white display mark 930 and an orange display mark 931 can be formed.

[0009]

However, in the above method, unevenness is formed on the surface of the knob, and the appearance of the knob is impaired. That is, as shown in FIG.
Around 0,931, white and black, and orange and black inks are overlapped in two layers. On the other hand, the other portions are made of one layer of black ink 92. Therefore, there is a difference in the thickness of the ink between the periphery of the display mark and the other portions. Therefore, the projection 99 is formed around the display marks 930 and 931, and the appearance is poor.

Therefore, the following method of forming a display mark can be considered. That is, on the surface of the translucent base material, color ink having the same shape as the display mark is applied only to the portion where the display mark is to be provided. Next, a black ink is applied on the translucent substrate and the color ink. After that, the black ink is removed by the laser along the shape of the display ink.

However, in this case, it is difficult to accurately align the pattern of the display ink with the portion where the black ink is removed by the laser. In view of the above problems, the present invention is to provide a display mark forming method that can easily form a display mark that is color-coded using a plurality of color inks without providing a convex portion around the display mark. It is assumed that.

[0012]

According to the present invention, there is provided a method of forming a plurality of display marks having different colors on a light-transmitting base material, wherein the color ink for each of the display marks is entirely coated on the light-transmitting base material. On the surface,
In the case of this multi-layer coating,
By printing the display mark with the non-adhesive ink on the translucent base material or the color ink on which the respective display marks are to be formed, and then removing at least the color ink layer above the non-adhesive ink. , A display mark having a desired color is made to appear.

The most remarkable point in the present invention is that a non-adhesive ink which does not adhere to other inks is printed on a translucent substrate or color ink on which each display mark is to be formed,
After drying, the color ink layer applied on the non-adhesive ink is removed. In the present invention, the non-adhesive ink is a transparent or colored ink that does not adhere to the color ink. The non-adhesive ink is printed in the same shape as the display mark on the surface of the translucent substrate or the color ink. Another color ink is applied on the non-adhesive ink.

A plurality of types of inks having different colors are used as the color inks. The color ink is sequentially applied on the entire surface of the non-adhesive ink, the translucent base material, or another color ink. Each color ink adheres to the translucent substrate or another color ink. On the other hand, the color ink printed on the front surface and the back surface of the non-adhesive ink does not adhere to the non-adhesive ink.

The color of the color ink is arbitrary, such as black, white, orange, and transparent. In general, the thickness of each color ink layer is preferably about 20 μm. There is no particular limit on the thickness,
Any thickness is acceptable as long as it can be applied uniformly. When the color ink layer is thin, the abrasion resistance of the color ink layer is poor.

The color ink layer on the non-adhesive ink is removed with an adhesive tape or the like. The non-adhesive ink can be left as it is, but can be easily removed with an adhesive tape or the like because it does not adhere to the color ink on the back surface. The thickness of the non-adhesive ink is preferably 2-3 μm. Although this thickness is a thickness formed by screen printing, it is not necessary to particularly define the thickness, and it is a thickness that can be printed uniformly. The method of the present invention can be used for forming a display mark on a translucent display panel, such as a switch knob provided with the display mark.

[0017]

According to the present invention, a transparent non-adhesive ink which does not adhere to other inks is printed on a transparent base material or color ink on which each display mark is to be formed in a desired display mark pattern. ing. Therefore, the color ink printed on the upper surface of the non-adhesive ink does not adhere to the non-adhesive ink.

Therefore, the color ink layer applied on the non-adhesive ink is entirely removed along the shape of the non-adhesive ink using an adhesive tape or the like. This makes it possible to easily form a display mark having the color of the translucent base material or the color ink in the lower layer of the non-adhesive ink.

Further, since no convex portion is formed around the display mark by over-painting as in the conventional method, the appearance of the display mark is excellent. As described above, according to the present invention, there is provided a display mark forming method capable of easily forming a display mark colored using a plurality of color inks without providing a protrusion around the display mark. be able to.

[0020]

【Example】

Embodiment 1 An embodiment of the present invention will be described with reference to FIGS.
In this example, display marks 51 and 59 are provided on a knob 9 for a switch. The display mark 51 is formed by the method of the present invention, and the display mark 59 is formed by laser. The display marks 51 and 59 are formed on the translucent base material 90 as shown in FIG. On the surface of the translucent substrate 90, white ink 2, orange ink 3, and black ink 4 are sequentially applied in a layered manner. The display mark 51 is orange, and the display mark 59 is white.

The display mark 51 comprises an opening 41 provided in the black ink 4 and the orange ink 3 provided on the bottom surface thereof. The opening 41 is provided with a transparent non-adhesive ink 1 having the same shape as the display mark 51. The display mark 59 includes openings 49 and 39 provided in the black ink 4 and the orange ink 3 and the white ink 2 provided on the bottom surface. The knob 9 is used as a switch knob for operating an air conditioning control device of a vehicle.

Next, a method of forming the display mark will be described with reference to FIGS. First, as shown in FIG. 2A, a transparent translucent substrate 90 is prepared. Next, as shown in FIG. 2B and FIG. 2C, the white ink 2 and the orange ink 3 are sequentially applied on the entire surface of the translucent base material 90 by the ink spray injector 5. . Each time these color inks are applied, the color inks are dried.

Next, as shown in FIG. 3 (a), using the pattern 16, the screen 15 and the spatula 14 cut out in the pattern of the display mark 51, the non-colored ink is placed on the orange ink 3 where the display mark 51 is to be formed. The ink 1 is printed. Next, as shown in FIG. 3B, the black ink 4 is applied to the entire surface of the orange ink 3 and the non-adhesive ink 1 using the ejector 5 and dried.

Next, as shown in FIG. 4A, the black ink 4 on the non-adhesive ink 1 is removed using an adhesive tape 19. As a result, the opening 41 is formed in the black ink 4, and at the same time, the orange display mark 51 is formed. Thereafter, as shown in FIG. 4B, the black ink 4 and the orange ink 3 are burned off in the pattern shape of the display mark 59 using the laser 6, and the openings 49 and 39 are formed. As a result, a white display mark 59 is formed. Note that FIG.
As shown in (b), the display mark 51 is an orange defroster mark, and the display mark 59 is a wind direction and a doll mark.

Next, the operation and effect of this embodiment will be described.
In this example, the transparent non-adhesive ink 1 that does not adhere to other inks is printed on the orange ink 3. Therefore, the black ink 4 printed on the surface of the non-adhesive ink 1
Does not adhere to the non-adhesive ink 1. Therefore, the black ink 4 formed on the non-adhesive ink 1 is easily removed by the adhesive tape 19.

Thus, the display mark 51 having the same shape as that of the printed non-adhesive ink 1 can be easily formed.
Also, unlike the above-described conventional method, the appearance of the display mark 51 is good without forming a convex portion around the display mark. Further, in the present embodiment, the method of removing the black ink 4 and the orange ink 3 using the laser in the conventional example can be used in combination.

As described above, according to the present embodiment, the display mark 51 of the present invention and the white display mark 59 can be easily formed with good appearance. Further, the knob on which the display mark is formed is also used for an operating device or the like for operating various devices in electric equipment for automobiles or homes. By irradiating light from the back side of the translucent substrate, the display mark can display the operation state of the device regardless of night or day.

Embodiment 2 In this embodiment, as shown in FIG. 5, display marks 51 and 510 are formed on a translucent substrate 90. The display marks 51 and 510 are both formed by the display mark forming method of the present invention. The display mark 51 is orange, and the display mark 510 is white. The display mark 510 is
The openings 41 and 31 are formed by the white ink 2 provided on the bottom surface. In the opening 31, the transparent non-adhesive ink 1 having the same shape as the display mark 51 is left.

In the present embodiment, to form the display marks 51 and 510, the non-adhesive ink 1 having the same shape as the transparent display mark 510 is printed on the white ink 2 and dried. Next, the orange ink 3 is applied and dried, and the non-adhesive ink 1 for the display mark 51 is printed thereon and dried. Further, a black ink 4 is applied thereon in the same manner as in the first embodiment, and thereafter, each color ink layer on each non-adhesive ink 1 is removed. Thereby, the display marks 51 and 510 are displayed.
Is formed. Others are the same as the first embodiment. In this embodiment, the same effect as in the first embodiment can be obtained.

Embodiment 3 In this embodiment, as shown in FIG. 6, a transparent ink 10 is applied between a white ink 2 and an orange ink 3. The display mark 51 is formed on the orange ink 3 and the display mark 590 is formed on the transparent ink 10. The display mark 590 is located at a portion where the white ink 2 can be seen through the transparent ink 10.

In forming the display marks 51 and 590, the non-adhesive ink 1 for the display mark 51 and the display mark 5
The same procedure as in Example 2 is performed using the non-adhesive ink 1 for 90. The non-adhesive ink of the display mark 590 is removed. Others are the same as the second embodiment. In this embodiment, the same effect as in the second embodiment can be obtained.

Embodiment 4 In this embodiment, as shown in FIG. 7, display marks 51, 510 and 511 are formed on a transparent base material 90. The display marks 511 are provided in the openings 41, 31, 21.
And the non-adhesive ink 1 provided on the bottom surface thereof, and is transparent.

In forming the display marks 51, 510, and 511, the non-adhesive ink 1 having the same shape as the display marks 511 is printed on the translucent base material 90 and dried. Then, similarly to the second embodiment, the white ink 2, the non-adhesive ink 1 having the same shape as the display mark 510, the orange ink 3, the non-adhesive ink 1 having the same shape as the display mark 51, and the black ink 4 are sequentially laminated. Apply to. After that, the color ink layer on the non-adhesive ink 1 is removed. Thus, the display marks 51, 510, and 511 are formed on the translucent base material 90. Others are the same as the second embodiment. In this embodiment, the same effect as in the second embodiment can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a knob on which a display mark is formed according to a first embodiment.

FIG. 2 is a process explanatory view showing a method of forming a display mark according to the first embodiment.

FIG. 3 is a process explanatory view following FIG. 2;

FIG. 4 is a process explanatory view following FIG. 3;

FIG. 5 is a cross-sectional view of a knob on which a display mark is formed according to the second embodiment.

FIG. 6 is a cross-sectional view of a knob on which a display mark is formed according to the third embodiment.

FIG. 7 is a cross-sectional view of a knob on which a display mark is formed according to the fourth embodiment.

FIG. 8 is a perspective view of a knob according to a conventional example.

FIG. 9 is a cross-sectional view of a switch knob for translucent illumination according to a conventional example.

FIG. 10 is a sectional view of a knob according to a conventional example.

FIG. 11 is an explanatory view of a process of forming a display mark on a knob according to another conventional example.

FIG. 12 is a process explanatory view following FIG. 11;

FIG. 13 is a perspective view of a knob according to another conventional example.

[Explanation of symbols]

1. . . Non-adhesive ink, 10. . . 1. transparent ink, . . 2. white ink, . . Orange ink, 4. . . Black ink, 51, 510, 511, 59, 590. . . Display mark, 90. . . Translucent substrate,

Claims (1)

(57) [Claims] 1. A method of forming a plurality of display marks of different colors on a light-transmitting substrate, wherein the color inks for the respective display marks are sequentially laminated on the entire surface of the light-transmitting substrate. At the time of this overcoating, the display mark is printed with a non-adhesive ink on a transparent base material or a color ink on which each of the above-mentioned display marks is to be formed. A method for forming a display mark, wherein the display mark having the desired color is made to appear by removing a color ink layer above the ink.