JPH04243036A - Production of hologram-containing compact disk and video disk - Google Patents

Abstract

PURPOSE:To provide the method for producing a hologram on the surfaces of a compact disk and video disk. CONSTITUTION:The holograms is previously provided on a stamper 1 which is a mold and is transferred to a disk to produce the hologram 3 on the disk 2. The hologram is previously put into the molding stamper 1 and is simultaneously molded, by which the simple and good-quality hologram-contg. disk 2 is produced.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing hologram-containing compact discs and video discs.

0002

[Prior Art] Conventionally, when attempting to display a hologram on the surface of a compact disc or a video disc,
The only option was to attach a sticker-like hologram or transfer foil hologram to the surface.

0003

SUMMARY OF THE INVENTION The present invention provides a completely new method for forming holograms on surfaces.

0004

[Means for Solving the Problems] The present invention relates to a method for manufacturing a hologram-containing compact disc and video disc, which is produced by providing a hologram on a stamper and transferring and copying it onto a disc during molding.

[0005]

[Operation] A hologram is placed in the stamper, and when it is molded into a disk, it is transferred and copied, forming a hologram on the disk.

[0006]

[Example] Original plates for compact discs and video discs are made by coating a glass plate with photosensitive resin, and producing sound and pictures.
The digital signals of the characters are exposed to photosensitive resin and developed to appear as dots.

In the present invention, a photosensitive resin is exposed to a digital signal, which functions as a conventional compact disc and a video disc, and a hologram is also exposed, and developed to create a digital signal and a hologram, and dots of the digital signal, The difference in the shape of the hologram is used to create a hologram-containing disk by not reading the hologram when reading a digital signal.

In this method, a hologram is placed on the surface of a stamper (1), which is a mold for manufacturing the disk, and is copied onto the disk (2) during molding. The hologram (3) may be imaged on the protrusion as shown in FIG. 1, or may be imaged on the recess as shown in FIG.

[0009]

[Effects of the Invention] Conventionally, a photo or title of a singer was pasted on a disc with a hologram in the form of a sticker or transfer foil, but by putting the hologram in a molded stamper and molding it at the same time, it is now easier. It is possible to make high-quality hologram discs.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the invention.

FIG. 1 is a cross-sectional view of a protrusion provided with a hologram.

FIG. 2 is a cross-sectional view showing a hologram provided in a recess.

[Explanation of symbols]

1 Stamper 2 Disc 3 Hologram

Claims (1)

[Scope of Claims] Claim 1: A method for producing a hologram-containing compact disc and video disc, which is produced by providing a hologram on a stamper, transferring it to a disc during molding, and copying the hologram.