JPH06203521A - Shutter for protecting floppy disk and manufacture of the same - Google Patents

Abstract

PURPOSE:To simply display identification on the shutter and also to make the shutter inexpensive. CONSTITUTION:The floppy disk protecting shutter 18 is provided for the purpose of opening and closing a protecting opening part 16 of a flopply disk 10. This shutter 18 is molded out of synthetic resins, and a base part 26 of the outer surface is formed to be a nonglossy surface, and then characters and codes 24, etc., are formed on a glossy surface, or the base part 26 of the outer surface of the shutter 18 is formed to be a glossy surface, and characters and codes 24, etc., are formed on a nonglossy surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protector shutter for a floppy disk and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, 3.5-inch floppy disks have been used by being housed in a plastic case called a protector. Since the disk surface and the magnetic head of the disk drive device need to contact each other for data access when set in the disk drive device, the protector is provided with an opening. If the opening is left open, the disk surface may be damaged, so a shutter is provided to expose the opening when set in the disk drive device. For example, in the case of the same 3.5-inch disk, there is a difference in storage density and capacity, so the identification must be displayed for each disk. Therefore, when the identification is displayed, it is displayed on the protector body or the shutter, but considering the cost, it is cheaper to display the identification on the shutter, so it is possible to perform screen printing or pad printing after forming the shutter. Identification is attached.

[0003]

However, when screen-printing or pad-printing is performed on the shutter, a contact plate or the like must be inserted to prevent the shutter from deforming, and the workability increases as the number of steps increases. However, as a result, there is a problem that the manufacturing cost of the shutter increases. Further, when the shutter is made of synthetic resin, the step of inserting the contact plate or the like is required, and especially when the shutter is made of acetal resin, the resin has oil repellency and print ink does not ride well. It is necessary to perform a surface treatment for roughening the printing surface of, and many steps are required. Although the surface roughening treatment is performed by laser processing, there is also a problem that the shutter is thin and is easily damaged during processing, which is uneconomical. Furthermore, when a shutter is made of synthetic resin, a method of forming characters, symbols, etc. by the unevenness of the surface has been proposed, but it has not been realized because the shutter is thin.

Therefore, an object of the present invention is to provide an inexpensive shutter for a protector of a floppy disk and a manufacturing method thereof.

[0005]

In order to achieve the above object, the present invention has the following constitution. The floppy disk protector shutter is a synthetic resin molded shutter for the floppy disk protector shutter that opens and closes the floppy disk protector opening. And the like are formed on a glossy surface.

Another feature is that the base portion of the outer surface of the shutter is formed on a glossy surface, and characters and symbols are formed on a non-glossy surface.

In these shutters, at least the periphery of positions corresponding to characters and symbols on the cavity surface are mirror-finished,
A resin molding die with fine irregularities formed on the other cavity surface, or fine irregularities formed around at least the position corresponding to the letters and symbols on the cavity surface, and the other cavity surface is a mirror-finished resin. It can be manufactured by resin molding using a molding die.

[0008]

According to the present invention, the base portion of the outer surface of the shutter is formed on the non-glossy surface so that characters and symbols are formed on the glossy surface.
Alternatively, since the base portion of the outer surface is formed on the glossy surface and the characters / symbols are formed on the non-glossy surface, the characters / symbols can be read by the difference in the degree of light reflection on the shutter surface.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 shows a front view of the floppy disk 10 of the first embodiment. Reference numeral 12 is a protector, in which a disk 14 is rotatably housed.
The protector 12 is provided with an opening 16 so that the floppy disk 10 can be used as a disk drive device (not shown).
When set to, the magnetic head of the disk drive device can contact the surface of the disk 14 for data access.

Reference numeral 18 denotes a shutter, which is movable left and right along the upper edge of the protector 12. A window 20 is opened in the shutter 18, and when the shutter 18 moves to the left, the window 20 and the opening 1 of the protector 12 are opened.
When 6 matches, the magnetic head and the surface of the disk 14 can come into contact with each other. The shutter 18 includes the protector 12 and the shutter 1.
8, a spring (not shown) is constantly urged to the right, and the shutter 18 normally closes the opening 16. The left half of the outer surface of the shutter 18 is an identification portion 22, and a product symbol of the floppy disk 10 and identification characters / symbols 24 indicating the recording density and the like are displayed.

An enlarged front view of the shutter 18 is shown in FIG. The base portion 26 on the outer surface of the shutter 18 is a non-glossy surface on which fine irregularities are formed, and the characters / symbols 24 are formed on a mirror-like glossy surface. The symbol 24 can be read. The shutter 18 is made of synthetic resin and can be manufactured by injection molding.

In this embodiment, the characters / symbols 24 of the shutter 18 are formed simultaneously with the injection molding of the shutter 18. This is because the printing process of the characters / symbols 24 can be omitted. The molding die is characterized in that the characters / symbols 24 are simultaneously displayed during the injection molding of the shutter 18. When making the molding die, at least the periphery of the position corresponding to the letters / symbols 24 on the cavity surface is mirror-finished. Next, change the position corresponding to the character / symbol 24 to
After masking the shape according to the letters and symbols 24,
Sandblasting is applied to the cavity surface. As a result, fine irregularities are formed on the cavity surface except for the masked portion. After that, if the masked member is removed, the processing of the cavity surface of the molding die is completed. It should be noted that the machining of the cavity surface can also be performed by electric discharge machining, and in that case, the machining may be performed using an electrode having a shape corresponding to a character, a symbol, or the like.

When the shutter 18 is injection-molded using the molding die having the cavity surface treated as described above, the base portion 26 of the identification portion 22 becomes a non-glossy surface at the same time as the molding.
The symbol 24 can be formed on a glossy surface, and the character / symbol 24 can be read due to the difference in the degree of light reflection between the two. The shutter 18 molded in this way can be immediately sent to the assembly process of the floppy disk 10 without having to send it to the printing process.

Next, a second embodiment will be described. Even if the base portion 26 is formed on the glossy surface and the character / symbol 24 is formed on the non-glossy surface in the identification portion 22 of the shutter 18, the character / symbol 24
Can be made readable. In the molding die for resin-molding the shutter 18 of the second embodiment, fine irregularities are formed at least at positions corresponding to the letters and symbols 24 on the cavity surface, and the other cavity surfaces are mirror-finished. There is. When resin molding is performed using this molding die, the base portion 26 becomes a glossy surface in the identification portion 22 of the shutter 18.
The characters / symbols 24 can be formed on the non-glossy surface. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. is there.

[0015]

By using the shutter for a floppy disk protector and the method of manufacturing the same according to the present invention, characters and symbols can be displayed by the difference in the degree of light reflection on the surface of the shutter. The printing process which is the cause can be omitted, workability in the manufacturing process of the floppy disk can be improved, and cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a front view of a floppy disk of a first embodiment according to the present invention.

FIG. 2 is an enlarged front view of a shutter of the floppy disk of FIG.

[Explanation of symbols]

 10 Floppy Disk 12 Protector 14 Disk 16 Opening 18 Shutter 24 Character / Symbol 26 Base

Claims (6)

[Claims] 1. A shutter for a protector of a floppy disk that opens and closes a protector opening of a floppy disk, is made of synthetic resin, an outer surface of a base portion is formed as a non-glossy surface, and letters and symbols are glossy surfaces. A shutter for a protector of a floppy disk, which is characterized in that 2. A protector shutter for a floppy disk that opens and closes a protector opening of a floppy disk, is made of synthetic resin, and a base portion of the outer surface is formed as a glossy surface, and letters and symbols are non-glossy surfaces. A shutter for a protector of a floppy disk, which is characterized in that 3. A resin molding die, wherein at least the peripheral portion of the cavity surface corresponding to the letters and symbols is mirror-finished, and the other cavity surface is formed with a resin molding die having fine irregularities. Manufacturing method of shutter for protector of floppy disk. 4. The shutter for a protector of a floppy disk according to claim 3, wherein the fine irregularities of the resin molding die are formed by subjecting the cavity surface to sandblasting. Production method. 5. A fine concavo-convex pattern is formed around at least a position corresponding to letters and symbols on the cavity surface, and the other cavity surface is resin-molded by using a mirror-molded resin molding die. Manufacturing method of shutter for protector of floppy disk. 6. The shutter for a protector for a floppy disk according to claim 5, wherein the fine irregularities of the resin molding die are formed by subjecting the cavity surface to sandblasting. Production method.