JPH0458386B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for producing reliefs,
More specifically, a high contrast negative film is formed by photographing the object 1, and then a high contrast positive film is formed by inverting the high contrast negative film, and the high contrast negative film and the high contrast positive film are overlapped with a slight shift. A relief positive film 2 in which the entire image of the object 1 and outlines 4 of each part are embossed is synthesized between the high-contrast negative film and the high-contrast positive film,
Further, the relief positive film 2 is inverted to form a relief negative film 3 that represents only the outer contour line 4 of the entire image of the object 1.
Relief negative film 3 by passing or reflecting light
The outer contour line 4 of the object 1 is converted into an electric signal, a carving plate 5 is engraved according to the electric signal to highlight the entire image of the object 1, and then light is passed through or reflected on the relief positive film 2 to create a relief. A relief manufacturing method characterized in that the outline 4 of each part of a positive film 2 is converted into an electric signal, and the outline of each part is engraved on the entire image of an engraving plate 5 at different engraving depths according to the electric signal. It is something.

Conventionally, reliefs are made by making a mold and then producing large quantities of the same item through press working or casting.For example, it takes time to produce other types in small quantities, such as medals for wedding favors. It was not economically applicable.

The present invention is completely different from such conventional production methods, and aims to provide a method for producing reliefs that can produce even a single elaborate relief at low cost and quickly.

Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments. First, I will explain the procedure for producing film for manuscripts.
An object 1 (here, a profile of a person) is photographed, and a high-contrast negative film (not shown) of the object 1 is produced. Next, this high contrast negative film is reversed to produce a high contrast positive film (not shown). Thereafter, a relief positive film 2 is synthesized from the high contrast negative film and the high contrast positive film. That is, a high-contrast negative film and a high-contrast positive film are superimposed with a slight shift, and the outer contour line 4 of the entire image of the object 1 is defined in each part of the object 1 ( for example,
The contour lines 4 of eyes 6, nose 7, mouth 8, ears 9, hair 10, etc.) are highlighted. Then, in this state, the relief positive film 2 is produced by printing. On the relief positive film 2, the outer contour line 4 of the entire image and the contour lines 4 of each part, which are formed by combining the high contrast negative film and the high contrast positive film, stand out. This relief positive film 2 is reversed to produce a relief negative film 3. A plurality of the relief positive films 2 described above will be produced as necessary.
For example, if the engraving depth is to be three levels, two sheets are required. First, among the parts of the object 1, the parts with the same engraving depth (for example, the contour line 4 around the hair 10 and the ears 9 are the shallowest, followed by the outer corners of the eyes 11, cheeks 12, and the rear half of the eyebrows 18. , then decide which is the deepest part (e.g. eyes 6, nose 7, mouth 8, etc.), leave the parts with the same engraving depth together, and leave the parts with different engraving depths together. The part is filled in and a plurality of relief positive films 2 for partial engraving are produced. The engraving machine A includes a rotary table 13 on which an engraving plate 5 is placed and rotates and moves laterally, an engraving needle 15 that is suspended above the rotary table 13 and whose height from the rotary table 13 can be changed, and a rotary table. A document table 17 is arranged on the side of the document table 13 and on which various films for documents are placed.
, an electric control unit 14 that projects light onto the film placed on the document table 17 and converts the contour line 4 formed on the film into an electric signal, and an elevating unit that moves the engraving needle 15 up and down by the electric control unit 14. 16.

Then, the engraving plate 5 (made of metal or wood) is fixed to the rotating table 13, and then the relief negative film 3 is attached to the document table 17, and the height of the tip of the engraving needle 15 from the engraving plate 5 is set. After that, turn on the switch. The rotary table 13 rotates with the engraving plate 5 placed thereon and moves sideways little by little. On the other hand, the relief negative film 3 on the document table 17
The light passing through or reflecting is converted into an electric signal, and the electric control section 14 controls the elevation and descent of the engraving needle 15. That is, the engraving needle 15 descends to engrave the engraving plate 5 on the white part of the relief negative film 3 (when light passes through the relief negative film 3).
The engraving needle 15 is pulled up to prevent the engraving plate 5 from being engraved on the blackened part of the relief negative film 3 (object 1 = the part of the entire profile of the person through which light does not pass, indicated by diagonal lines). . Turntable 13
Since the engraving plate 5 is rotated and moved laterally while being placed on the engraving plate 5, the engraving is performed from the periphery toward the center, and when the engraving needle 15 reaches the rotation center of the engraving plate 5, the engraving is completed. engraving needle 15
is raised. In this way, the first stage of engraving (background part), which has the deepest engraving depth, is completed, and the same overall image as the relief negative film 3 is engraved in relief. Next, attach the relief positive film 2a for partial engraving for the second stage, leaving parts such as the mouth 8, eyes 6, and nose 7, on the document table 17, and at the same time raise the engraving needle 15 slightly (for example, by 0.1 mm). level) and turn on the switch. At this time, there must be no deviation in the positional relationship between the relief negative film 3 of the first stage and the relief positive film 2a for partial engraving of the second stage. As before, the rotary table 13 rotates and moves laterally, and the engraving needle 15 moves up and down in accordance with the contour line 4 of the relief positive film 2 for partial engraving.
Portions such as a mouth 8 and a nose 7 are engraved on the entire image of the engraving board 5. In this case, since the engraving needle 15 is set slightly above the first stage, the engraving needle 15 is slightly shallower than the background part of the first stage. When the second level of carving is completed in this way, the third level of carving begins. That is, while being careful not to shift the attachment position, set the relief positive film 2b for partial engraving in the third stage, in which the cheeks 12 and the outer corners of the eyes 11 are white, on the document table 17, and then start engraving. needle 15
Raise it slightly further and fix it. After doing this, turn on the switch and see the entire image at the outer corner of the eye 11 as before.
and 12 cheek parts are carved. Finally, as the fourth stage, set the relief positive film 2c for partial engraving, in which the hair 10, ears 9, etc. are outlined, while being careful not to shift the position, and set the engraving needle 15 slightly higher. Turn on the rear switch. Then, by performing the same operation as described above, hair 10 and ears 9 are added to the overall image.
This results in the formation of a three-dimensional relief with varying engraving depths over four stages. In this example, the engraving depth was set to four levels, but
Of course, the present invention is not limited to this, and if the entire image is large, it may be divided into more stages, or conversely, if the entire image is small, the division may be omitted and the division may be made into two stages. In order to make it easier to understand, the outer ring of the entire image is shown with a two-dot chain line on the relief positive film 2 for partial engraving.

In this case, the relief will be engraved in a step-like manner, but the engraved part is then ground with, for example, a hand drill for technicians, and the engraved part is shaped into a gently curved surface to give it a more three-dimensional effect. It's okay.

In the present invention, a high-contrast negative film and a high-contrast positive film are superimposed with a slight shift, and a relief positive film is synthesized between the high-contrast negative film and the high-contrast positive film in which the entire image of the object and the outlines of each part are embossed. Then, the relief positive film is inverted to form a relief negative film that shows only the outer outline of the entire image of the object, and an engraving board is engraved along the outer outline of the relief negative film to show the entire object. The image is raised, and then the contours of each part are engraved on the overall image of the engraving plate at different engraving depths, following the outline of each part of the relief positive film, so the relief is carved with different engraving depths. Since it is composed of parts, it is possible to achieve a three-dimensional effect, and because it uses film as the engraving manuscript instead of using expensive molds as in the past,
As mentioned above, there is an advantage that extremely elaborate reliefs can be manufactured quickly and inexpensively even in small quantities.

[Brief explanation of the drawing]

Fig. 1... A flow diagram of one embodiment of the engraving method of the present invention, Fig. 2... One of the relief negative films of the present invention
FIG. 3 is a front view of an embodiment of the relief positive film of the present invention; FIG. 4 is a front view of an embodiment of the relief positive film for partial engraving of the second stage of the present invention; FIG. Figure 5...Front view of one embodiment of the relief positive film for partial engraving of the third stage of the present invention,
FIG. 6: A front view of an embodiment of the relief positive film for partial engraving of the third stage of the present invention. 1...Object, 2...Relief positive film, 3...
Relief negative film, 4...outline, 5...engraved plate.

Claims (1)

[Scope of Claims] 1. A high contrast negative film is formed by photographing an object, and then a high contrast positive film is formed by inverting the high contrast negative film, and the high contrast negative film and the high contrast positive film are superimposed with a slight shift. A relief positive film, in which the entire image of the object and the contours of each part are embossed, is synthesized between the high-contrast negative film and the high-contrast positive film, and the relief positive film is then inverted to create the outer contours of the entire image of the object. A relief negative film is formed that represents only the object, and the outer contour of the relief negative film is converted into an electrical signal by passing or inverting light onto the relief negative film, and an engraving plate is engraved according to the electrical signal to display the entire object. The image is raised, and then the outline of each part of the relief positive film is converted into an electric signal by passing or inverting the light through the relief positive film, and the engraving depth is varied according to the electric signal to create the entire image of each part on the engraving plate. A relief production method characterized by engraving an outline. 2. In changing the engraving depth of each part into multiple stages, a part formed by forming multiple sheets of relief positive film, leaving contour lines with equal engraving depth, and filling out the contour lines of other engraving depths. A method according to claim 1, characterized in that a plurality of relief positive films for engraving are prepared, and each part of the entire image is engraved according to the engraving depth using each part of the relief positive film for engraving. How to make reliefs.