JPH04181530A - Single-side medium optical disc - Google Patents

Abstract

PURPOSE:To achieve prevention of writing and deletion on the side of a defective surface by making a light protected part on the side of the defective surface unmovable within a house of a cartridge. CONSTITUTION:When a light protected part is set at a position where writing and deleting operations become impossible with respect to a media. to fix the part. a moderate amount of an ultraviolet hardening resin runs into clearance parts 201 and 202 and irradiated with ultraviolet rays to fix it temporarily. Another moderate amount of the same resin runs into the part 203 again to be irradiated with ultraviolet rays again. This can prevent writing and deletion on the side of the defective surface by mistake.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a single-sided media optical disc [Prior Art] Conventionally, when manufacturing an optical disc that can be written and erased on only one side, a double-sided media disc with a defect on one side is used, and The write protect part of the cartridge on the front side was provided in advance in a position that made writing and erasing operations impossible.

[Problems and Objectives to be Solved by the Invention] However, in the above-mentioned conventional technology, the user can freely move the position of the write protect part, so when it is set in the drive, it is possible to accidentally write or erase on the defective side. This has the problem that there is a possibility that the operation will be executed. Therefore, the present invention is intended to solve this problem.The purpose of the present invention is to make it impossible to perform writing and erasing operations on the defective side in advance, so that when the drive is set, the An object of the present invention is to provide a single-sided optical disk medium that prevents writing and erasing operations from being performed on the disk.

[Means for Solving the Problems] In order to solve the above problems, the single-sided optical disc media of the present invention has a single-sided defective double-sided optical disc media, in which the write protect part on the defective side is inserted into the write protect bar of the cartridge. It is characterized by being immobile.

[Example] Embodiment j8 of the present invention will be explained below with reference to the drawings.

A method of fixing a conventional write protect part to a cartridge with an adhesive and a method of using a write protect part processed for the present invention (hereinafter referred to as a fixed write protect part) will be described.

FIG. 1 is an example of an unassembled cartridge to which write protection parts are adhered according to an embodiment of the present invention. When the write protect part is set in the position shown in Figure 1 (the position where writing and erasing operations to the media are impossible), apply adhesive to the part where the write protect part and the cartridge come into contact, and then attach the write protect part to the position shown in Figure 1. Fix it.

For example, when using ultraviolet curing MMa as an adhesive, apply a thin layer to the area where the light protect part and the cartridge come into contact, and in addition, apply adhesives 201 and 202 in Fig. 2.
After pouring an appropriate amount of ultraviolet curable resin into the gap and temporarily fixing it by irradiating it with ultraviolet rays, pour an appropriate amount of ultraviolet curable resin into the area 203 again and irradiating it with ultraviolet rays to completely fix it.

If the UV-curable resin is used in this manner, there is no need to worry about the UV-curable resin wrapping around the front side of the cartridge and staining the cartridge.

When the write protect parts are bonded to the cartridge in this way, there is an advantage that the conventional write protect parts can be used as they are.

Next, FIG. 3 shows an example of a stationary write protect part in an embodiment of the present invention. Figure 4 shows a conventional write protect part, but when it is in the position shown in Figure 5, writing and erasing are impossible, and when force is applied in the direction of the arrow 501, parts 401 and 402 turn inside. This allows the claw portion 403 to come out of the groove of the cartridge and release the write-incapable state. However, the Fudo light protection parts are 401 and 40.
By integrating the parts 2 and 2, the mechanism is such that when the claw is pulled into the groove of the -degree cartridge, it will not come off due to force ζ. Therefore, by incorporating the immobile write protect part into the cartridge in a write protected state, it is possible to reliably maintain a state in which writing is not possible unless the cartridge is disassembled.

When such an immovable write protect part is used, there is an advantage that there is no need to increase the process of bonding the write protect part to the cartridge in the manufacturing process.

Although the present invention has been described above with reference to certain special embodiments, the present invention should not be considered limited thereto, and various modifications can be made without departing from the gist of the present invention.

〔Effect of the invention〕

As described above, according to the present invention, in a single-sided defective double-sided optical disk medium, by making the write protect part immobile within the write protect parts house of the cartridge, execution of writing and erasing operations on the defective one is ensured. This has the effect of preventing erroneous writing and erasing on the defective side when it is set in a drive.

FIG. 1 is a perspective view of the back side of a cartridge before assembly, with write protect parts in an embodiment of the present invention adhered to positions where writing and erasing operations are impossible.

FIG. 2 is a diagram of the part in which the ultraviolet curable resin is poured in an embodiment of the present invention.

201... Gap between the write protect part and the cartridge 202... Gap between the write protect part and the cartridge 203... Space into which the ultraviolet curing resin is poured Figure 3 shows the fixed light protect part in the embodiment of the present invention. Principal view.

Figure 4 is a top view of a conventional write protect part.

401...Movable part 402...Movable part 403...claw Figure 5 is a diagram showing the movable direction of the write protect parts.

that's all Applicant: Seiko Epson Corporation Agent: Patent Attorney Kisanbe Suzuki fl! ! 1 person Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A single-sided media optical disc having a defective single-sided double-sided media, characterized in that a write-protect part on the defective side is made immovable within a write-protect parts house of a cartridge.