JPS58162320A - Duplicator of disk - Google Patents

Abstract

PURPOSE:To prevent burrs from producing and a disk surface from breaking by coating the surface of a mold with photosetting resin, placing a replica base thereon, further putting a mask on necessary portion projecting irradiation rays and hardening only a necessary portion or necessary portions. CONSTITUTION:The surface of a mold 1 is coated with replica material such as ultraviolet setting resin and a replica base 2 is put on it. Further, a mask 5 is placed on the replica base 2. Material reflecting irradiating light 4 or material 6 absorbing the irradiating light 4 is treated on the external peripheral part of the mask 5 or if necessary in the internal peripheral part thereof. Next, when the light 4 is projecting, a necessary part or necessary parts only are hardened, an unnecessary part or unnecessary parts are not hardened, the unnecessary parts can be washed out by after washout treatment. In this way, since the unnecessary part of the duplicate disk is not hardened, no burrs appear around the mold, and the duplicated disk can be prevented from breaking when it is peeled.

Description

[Detailed description of the invention] The original F! A is video disc 1. Melui ViPCMf
This invention relates to the reproduction of discs used for f-code audio discs, digital code discs, and the like.

A conventional duplication method is as shown in FIG. That is, in FIG. 1, UV resin 3V is placed on gold W1.
Coat c, press the substrate 2, spread the UV resin 3f, then expose, and remove gold [1] to complete the duplication of the disc. Gold here! ! Since the diameter of the mold 11 is smaller than that of the substrate 2, the amount of UV resin remaining on the outer peripheral edge of the mold 1 becomes 1", which becomes an obstacle when the replica is combed.

In addition, if this "burr" is large, it may come off and pop out when the replica disc is being rotated, or if two discs are pasted together, one burr will hit the other, and the chipped part will be damaged. However, there are some drawbacks such as residual particles remaining inside and damaging the disc surface.

SUMMARY OF THE INVENTION An object of the present invention is to provide a duplicating apparatus for disc-shaped information recording carriers that eliminates the drawbacks of the prior art described above and can reliably bond two discs together.

It is assumed that a means for removing it has been provided.

Hereinafter, an embodiment of the present invention will be explained with reference to FIG.

The replica material on top of the gold one is ultraviolet curing resin (U
V resin) and place the replica substrate 2t on it.

Furthermore, a mask 5 is placed on the replica substrate. mask 5
In this case, a material 6 that reflects or absorbs the irradiated light 4 is applied to the outer circumferential portion and, if necessary, to the inner circumferential portion. By irradiating with 4t of irradiation light in this manner, only the necessary portions are cured, and unnecessary portions are not cured, so that they can be washed away by washing in the post-processing step.

Here, as a method for manufacturing the mask, for example, when attaching a light reflecting material such as 1, it can be manufactured by vacuum deposition. Further, when attaching an ultraviolet absorbing substance such as polyimide resin, it can be made using a spin cord.

As the mask substrate, a light-transmitting material such as glass or acrylic is used.

Another embodiment of the invention will be explained with reference to FIG.

In FIG. 3, mask material 6 is applied directly to replica substrate 2. In FIG. Therefore, a mask substrate is not required. Here, in FIG. 3, the mask material 6 is attached to the replica substrate 2 on the opposite side to the UV resin 3;
If it is thin, it may be attached on the same side as the UV resin 3.

As described above, according to the present invention, since the unnecessary portions of the duplicate disk are not hardened, the "burr" that appears around the metal shop is eliminated.

Furthermore, by eliminating this hole 1, no excessive force is applied to the gold and replica substrates when the duplicate disk is removed after being cured by light irradiation, and accidents such as breakage can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a conventional method for producing a duplicate disc, Fig. 2 is a diagram showing an embodiment of the present invention, and Fig. 3 is a diagram showing a book for ¥71".

Claims (1)

[Claims] 1. A replica mold having irregularities according to the recorded information, a photocurable resin, and the resin applied to a part or the entire surface of the mold.
- In a duplication device consisting of a jig for fabricating, a means for gradually raising or lowering the substrate while bending it, and a light source for curing the resin, the light from the light source is transmitted through the material. A disk duplicating device which is equipped with nine mask tubes to make it t% moldy. 2. In the reproduction apparatus according to claim 1, a light-transmitting substrate such as acrylic or glass is used as the mask, and a light reflector is partially used as the material on the plate. Guineta's replication device. 3. % Reproduction atj as stated in claim #I1! t) A disk duplicating apparatus characterized in that a light-transmissive substrate such as acrylic or glass is used as the mask, and a light-absorbing resin is partially used on the plate as the member. 4. The reproduction apparatus according to claim 1, wherein a replica substrate is used as the mask, and a light reflector or a light absorber is placed on the plate as the member.9. replication device.