JPS61246944A - Manufacture of optical disk and its device - Google Patents

Abstract

PURPOSE:To obtain a highly reliable optical disk free from impurities and defects by forming a protective film and a label printing film on the optical disk successively by a continuous process. CONSTITUTION:The optical disk 21 on which a reflective film is formed is placed on a tray 22. At first, it passes through a protective film forming device 15 and a protective film is formed. Then, the tray 22 is carried by a carrying device 23 to a label print film forming device 16 by consecutive process. A printed film is printed by a screen printing device 19, hardened by a hardening device 20 and a printed film is formed. These are processed by the consecutive process and the protective film and the label print film are formed on the disk 21 on which a reflective film is provided. By above method, the optical disk free from impurities and defects can be obtained as the adhesion of contamination does not occur.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention records digital signals such as video discs, digital audio discs (eg, compact discs), still images, document files, etc.

The present invention relates to a method for manufacturing a reproducible or erasable source disc and an apparatus for manufacturing an optical disc.

Conventional technology In general, optical discs are seen as promising information media because of their extremely high information density, high S/N ratio, and low noise, and have been commercialized as video discs and digital audio discs, which are used to record digital signals. In recent years, research and development has also been carried out as a playback disc.

FIG. 6 shows an outline of a compact disc, which is a conventional general digital audio disc.

In this system, a PCM-converted digital signal is recorded in the form of a bit string on a resin substrate and reproduced by a semiconductor laser beam.

In FIG. 6, 1 is a disk, 2 is a resin substrate, 3 is a digital signal section in the form of a pit row carved on the resin substrate 2, and 4
is a reflective film formed on the surface thereof, ξ is a protective film coated on the reflective film 4, 6 is a label printing film coated on the protective film 5, and 7 is a semiconductor laser beam.

The protection M5 is necessary to protect the reflective film 4,
Further, the label printing film 6 is necessary for disc identification.

Conventionally, for forming a protective film and a label printing film, there were only separate protective film forming devices and printing film forming devices, respectively. FIG. 3 shows a sectional view of a conventional protective film forming apparatus for forming a protective film on a disk provided with a reflective film or a recording film. Reference numeral 8 denotes a protective film forming device, in which a protective film coating device 9 and a drying device 10 form a protective film on a disk provided with a reflective film.

FIG. 4 shows a sectional view of a conventional printing film forming apparatus for forming a label printing film on a disk provided with a protective film. 1
Reference numeral 1 denotes a printing film forming device, in which a printing film is formed by a printing ink applying device 12 and a drying device 13 on a disk provided with a protective film.

Problems to be Solved by the Invention However, in the above configuration, a protective film forming device that forms a protective film on a disc provided with a reflective film or a recording film, and a label on the disc provided with the above-mentioned protective film are provided. Since the printing film forming device that performs printing is a separate configuration, there are problems such as unnecessary labor and time spent in each process, easy to contain contamination and defects, poor reliability, and lack of mass production. It had

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an optical disc manufacturing method and a manufacturing apparatus thereof, which can provide highly reliable optical discs with good mass productivity and at low cost.

Means for Solving the Problems In order to solve the above problems, the present invention provides a protective film forming apparatus that forms a protective film on a disk provided with a reflective film or a recording film in the same apparatus, and a protective film forming apparatus that forms a protective film on a disk provided with a reflective film or a recording film. A protective film and a label printing film are sequentially formed on the disc in a continuous process. It forms the

Effect of the present invention With the above-described configuration, after a protective film is formed on a disk provided with a reflective film or a recording film installed on a tray, the tray is transported by a transport device in a continuous process within the same device. and a label printing film is formed on the disk provided with the above-mentioned protective film using a printing device,
Since it is a continuous process, reliability can be improved and mass productivity can be improved, so optical discs can be manufactured at low cost.

EXAMPLE Hereinafter, a method and apparatus for manufacturing an optical disc according to an example of the present invention will be described with reference to the drawings.

FIG. 1 shows an optical disc manufacturing apparatus according to a first embodiment of the present invention, with FIG. 1(,) being a plan view and FIG. 1(b) being a sectional view.

The optical disk manufacturing apparatus 14 of the present invention includes a protective film forming apparatus 1
6 and a label printing film forming device 16.

Further, the protective film forming device 15 includes a protective film coating device 17 and a curing device 18, and the printed film forming device 1e includes:
It is composed of a screen printing device 19 and a curing device 2Q.

A disk 21 provided with a reflective film is placed on a tray 22 and first passes through a protective film forming device 15 to form a protective film. Next, the tray 22 is transported by a transport device 23 to the label printing film forming device 16 in a continuous process. Here, a printed film is formed in the screen printing device 19, and is cured in the curing device 2o to form a printed film.

These are sequentially processed to form a protective film and a label printing film on the disc provided with the reflective film.

Aluminum (Afi) is generally used as the reflective film, and acrylic ultraviolet curing resin is used as the protective film and label printing film. Furthermore, the apparatus of the present invention can be used even with a disc in which a recording film is provided on the reflective film.

A second embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a plan view of an optical disc manufacturing apparatus according to a second embodiment of the present invention.

The optical disk manufacturing apparatus 24 of the present invention includes a protective film forming apparatus 2
5 and a label printing film forming device 26.

The protective film forming device 25 also includes a disk ejecting/unloading device 27.
The label printing film forming device 26 is composed of a disk ejecting/unloading device 3o, a screen printing device 31, and a curing device 32.

A disc 33 provided with a reflective film is placed on a tray 34, and first in the protective film forming device 25, the disc is taken in by a disc ejecting/unloading device and sequentially transferred to a turntable 36.
is rotated, a protective film is formed in a protective film coating device 28, and a disk is dried in a curing device 29, and the disk on which the protective film is formed is taken out and placed on a tray 34.

Next, the disk is transported by the transport device 36 to the label printing film forming device 2θ. Here, the disk is taken in by the disk take-out device 30, the turntable 37 is sequentially rotated, a printed film is formed in the screen printing device 31, and it is dried in the curing device 32. These are sequentially processed in successive steps to form a protective film and a label printing film on the disc provided with the reflective film.

With this method, it is possible to form a protective film on a disc with a reflective film or a recording film, and then form a label printing film in a continuous process in the same device, improving reliability and mass production. will improve.

Effects of the Invention As described above, the present invention provides a protective film forming device for forming a protective film on a disc provided with a reflective film or a recording film in the same device, and a label printing device on the disc provided with the above-mentioned protective film. It is equipped with a printing film forming device that forms a film, a tray on which a disc is placed, and a transport device that transports the tray, and manufactures an optical disc by sequentially forming a protective film and a label printing film on the disc in a continuous process. Particularly, since there is no adhesion of contaminants such as dirt and dust during the process, highly reliable optical discs containing no impurities or defects can be obtained. Moreover, by having continuous steps in the same device, it is possible to provide stable and inexpensive optical discs that are highly mass-producible.

[Brief explanation of the drawing]

FIG. 1 shows an optical disk manufacturing apparatus according to a first embodiment of the present invention, in which (,) is a plan view, (b) is a sectional view, and (b) is a sectional view.
The figure is a plan view of an optical disk manufacturing apparatus according to a second embodiment of the present invention, FIG. 3 is a sectional view of a protective film forming apparatus which is a conventional optical disk manufacturing apparatus, and FIG. 4 is the same - Bell printing film formation. Cross-sectional view of the device, Fig. 6 (a), (b), (
c) is a plan view, a sectional view, and an enlarged view of essential parts of a digital audio disc, which is a type of optical disc. 1...Disc, 2...Resin substrate, 4
...Reflective film, 6...Protective film, 6...
... Label printing film, 14゜24 ... Optical disk manufacturing device, 15.25 - ... Protective film forming device, 16.26 ... Printing film forming device, 22 .34
-...Tray, 23.36...Transport device. 18. Noise/j+scissors! I9...Screen printing device 1

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Claims (2)

[Claims] (1) After forming a protective film on a disk provided with a reflective film or a recording film installed on a tray, the tray is transported by a transport device in a continuous process within the same device, and the tray is transported to a printing film forming device. A method for manufacturing an optical disc, comprising forming a label printing film on a disc provided with the above-mentioned protective film. (2) In the same device, a protective film forming device that forms a protective film on a disc provided with a reflective film or a recording film, and a printing film forming device that forms a label printing film on a disc provided with the above-mentioned protective film. A device, a tray for installing a disk,
An optical disc manufacturing apparatus comprising a transport device for transporting the tray, and configured to sequentially form a protective film and a label printing film on the disc in a continuous process.