JP3084816B2 - Disc cassette shutter manufacturing method - Google Patents

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 a disk cassette shutter which is most suitable for use in a disk cassette containing, for example, a 3.5-inch floppy disk or the like.

[0002]

2. Description of the Related Art Conventionally, a U-shaped shutter is slidably mounted on a disk cassette containing a 3.5-inch floppy disk. Examples of the shutter include a shutter formed by pressing a thin stainless steel plate, a shutter formed by injection molding with a synthetic resin such as polypropylene and polyacetal, and a shutter formed by punching a sheet material of a synthetic resin such as vinyl chloride.

[0003]

The shutter of the conventional disk cassette has a very low design, although the name of the manufacturer and the name of the product are printed on the shutter.

[0004] That is, in the case of a shutter using a synthetic resin, there is a method of changing the color of the synthetic resin itself in various ways as a method of improving the design, but in terms of manufacturing cost, a considerable quantity is required every time the color is changed. Expensive unless manufactured. In addition, it is difficult to select an ink for multicolor overprinting or the like due to factors such as printing strength and the like. In particular, there is little reality in printing that appears in a metallic tone (metallic tone). was there.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a large amount of cost for designing, producing, and maintaining a mold.
Relying on injection molding methods with expensive molds
The shutter of the disc cassette with high design
An object of the present invention is to provide a method of manufacturing a shutter of a disk cassette which can be manufactured at low cost .

[0006]

Shutter method for producing a disk cassette according to claim 1 of the present invention for achieving the above object, according to an aspect of the synthesis the light transmitting sheet made of a synthetic resin sheet
Any one of the opposing surfaces of the non-light-transmitting sheet made of a resin sheet
Printing layer and non-light-transmitting sheet facing the light-transmitting sheet side
Apply a metal deposition layer such as aluminum facing the side
Laminate translucent sheet and non-translucent sheet via adhesive
To form a laminated sheet, and the laminated sheet
After punching, the non-translucent sheet is placed inside
Folded into a U-shape to form a shirt
That's what I did. Further, the data of claim 2 of the present invention.
The manufacturing method of the disk cassette shutter is a synthetic resin sheet.
And a non-transparent sheet made of metal foil such as aluminum foil
Apply a printing layer to one of the opposing surfaces of the translucent sheet, and
Paste these translucent sheets and non-translucent sheets with an adhesive
To form a laminate sheet,
After punching the sheet, the non-translucent sheet is
Folded into a U-shape to form a shirt
That's what I did.

[0007]

Method for producing a shutter for de <br/> Isukukasetto of claim 1 of the effect of the present invention configured as described above, the synthetic resin sheet
And a non-transparent sheet made of a synthetic resin sheet.
Between the light-transmitting sheet and the printing layer facing the light-transmitting sheet side
Metal deposited layer of aluminum etc. facing the translucent sheet side
After the application, these two sheets are laminated with an adhesive
Sheet and punch out the laminated sheet
After processing, make sure that the non-light-transmitting sheet is
Because it is bent into a letter shape, use a mold
Regardless of the injection molding method, translucent sheets, printed layers,
At least four layers of a metal deposition layer and a non-translucent sheet,
A letter-shaped shutter can be easily manufactured. Also,
The method of manufacturing a disk cassette according to claim 2 of the present invention
Translucent sheet made of synthetic resin sheet and metal such as aluminum foil
After applying a printing layer between the non-translucent sheets made of foil,
Laminated sheet where both sheets are bonded with adhesive
After forming and punching the laminated sheet,
Non-translucent sheet made of metal foil is placed inside
Since it is bent into a U-shape, use a mold
Translucent sheet, printed layer, regardless of the injection molding method
And at least three layers of a non-translucent sheet made of metal foil
Thus, a U-shaped shutter can be easily manufactured.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a disk cassette shutter manufacturing method according to an embodiment of the present invention.

First, the disk cassette and the shutter will be described with reference to FIG. The disk cassette 1 is formed of an ABS resin or the like. A disk-shaped recording medium 2 such as a 3.5-inch floppy disk is accommodated in the disk cassette 1, and a pair of head insertion holes 3 is opened in both side surfaces 1a. ing. A U-shaped shutter 4 is slidably mounted in the direction of the arrow a on the outer side of both side surfaces 1a of the disk cassette 1, and the shutter 4 opens and closes both head insertion holes 3. I have.

Next, a method of manufacturing the shutter 4 will be described with reference to FIG. First, as shown in FIG. 1A, a laminate sheet 8 is manufactured from a light-transmitting sheet 6 and a non-light-transmitting sheet 7 made of a synthetic resin sheet such as polypropylene, polyacetal, nylon, or polyethylene. . The translucent sheet 6 is a sheet capable of transmitting light such as colorless and transparent, floating white, colored transparent such as light yellow and red, and the non-transmissive sheet 7 is black, dark blue and red. Is a sheet through which colored opaque light cannot be transmitted.

At this time, as shown in FIG. 1A, the light-transmitting sheet 6 and the non-light-transmitting sheet 7 are pulled out from the raw rolls 6a and 7a, respectively. Then, on the lower surface of the translucent sheet 6, for example, a character printing layer 10 such as a manufacturer name or a product name is printed by a transfer printing device 9. And the drying device 11
After the character printing layer 10 is dried by the following method, the character printing layer 1 is
After printing (or vapor-depositing) a base printing layer (or a metal vapor-deposited layer) 13 on the lower surface of the translucent sheet 6 from above, the drying device 1
These are dried by 4. On the other hand, the non-translucent sheet 7
An adhesive 16 is applied to the upper surface of the device by an adhesive applying device 15. Then, the light-transmitting sheet 6 and the non-light-transmitting sheet 7 are adhered from above and below by a pair of upper and lower pressure rollers 17 to produce a laminated sheet 8.

As described above, as shown in FIG.
A laminated sheet 8 having a character printing layer 10 and a base printing layer (or a metal vapor-deposited layer) 13 printed (vapor-deposited) between the light-transmitting sheet 6 and the non-light-transmitting sheet 7 is manufactured.

Next, as shown in FIG. 1C, a shutter original plate (a plate in which the U-shaped shutter 4 is developed on a plane) 4a is sequentially and continuously punched from a laminate sheet 8 by a press machine. I do. At this time, during the printing process of FIG. 1A, a joint mark 18 is printed on the laminate sheet 8 in advance, and the shutter mark is moved from a predetermined print position of the laminate sheet 8 while detecting the joint mark 18 photoelectrically. 4a is accurately punched.

Next, as shown in FIG. 1D, the shutter original plate 17 is bent into a U-shape by the next press to complete the shutter 4. However, at this time, the shutter 4 is bent so that the transparent sheet 6 side is outside the shutter 4 and the non-transparent sheet 7 side is inside the shutter 4.

The shutter 4 manufactured in this manner controls the various colors of the character print layer 10 and the base print layer (or metal deposition layer) 13 printed between the light-transmitting sheet 6 and the non-light-transmitting sheet 7. The design can be made so that the light passes through the translucent sheet 6 and emerges to the outside, so that the design of the shutter 4 can be significantly improved.

The light-transmitting sheet 6 and the non-light-transmitting sheet 7
Is a character printing layer 10 and a base printing layer (or a metal deposition layer) 1
3 is completely covered from both sides, there is almost no need to consider the printing strength of the character printing layer 10 and the underlying printing layer (or metal deposition layer) 13, and it is very easy to select these inks. is there.

Next, modified examples of the laminate sheet 8 will be sequentially described. Laminate sheet 8 shown in FIG.
Prints a base color printing layer (or a metallized layer) 13 on the upper surface of the non-translucent sheet 7 and then prints a character printing layer 10 such as a manufacturer name or a product name, and places the translucent sheet 6 on the upper surface. It is bonded with a light-transmitting adhesive (adhesive through which light can pass) 16a.

A laminate sheet 8 shown in FIG.
Prints a character printing layer 10 such as a maker name or a product name on the lower surface of the translucent sheet 6, deposits a metal vapor-deposited layer 19 of aluminum or the like on the upper surface of the non-translucent sheet 7. It is bonded from above and below by a translucent adhesive 16a. According to the laminate sheet 8, the metal deposition layer 19
Can be transmitted through the light-transmitting adhesive 16a and the light-transmitting sheet 6 and emerge to the outside in a metallic tone (metallic tone).

The laminate sheet 8 shown in FIG.
Is printed on the lower surface of the light-transmitting sheet 6, after printing a character printing layer 10 such as a maker name or a product name, and then printing an intermediate layer 20 having a good light-transmitting property, such as light yellow, on the upper surface of the non-light-transmitting sheet 7. A metal vapor-deposited layer 19 of aluminum or the like is vapor-deposited, and both sheets 6 and 7 are bonded together from above and below with a light-transmitting adhesive 16a. This laminate sheet 8 can also give a metallic tone (metal tone) to the color of the metal deposition layer 19 as in FIG. 2B.

The laminated sheet 8 shown in FIG.
The hologram pattern 21 is formed on the lower surface (or upper surface) of the translucent sheet 6 in advance, and the character printing layer 10 such as a maker name or a product name is printed on the lower surface of the translucent sheet 6. A metal vapor-deposited layer 9 of aluminum or the like is vapor-deposited on the upper surface of the sheet 7, and the two sheets 6, 7 are bonded to each other from above and below by a translucent adhesive 16a. This laminated sheet 8
According to this, a hologram effect can be obtained.

It should be noted that a character print layer 10 such as a manufacturer name or a product name is provided.
1 (B) and FIG. 2 (A)-(D)
As shown by the dashed line, it may be printed on the upper surface of the laminate sheet 8 (the surface side of the shutter 4). At that time, the shutter original plate 4a is punched from the laminated sheet 8 and further bent into a U-shape to manufacture the shutter 4. Then, the surface of the manufactured shutter 4 is printed one by one by a silk printing method or a pad. The character printing layer 10 may be printed by a printing method or the like.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made based on the technical concept of the present invention. For example,
The non-translucent sheet 7 may be a sheet made of a metal foil such as an aluminum foil. Then, the non-translucent sheet 7 is made of aluminum foil.
If it is made of metal foil, etc., it is bent into a U-shape
It is possible to improve the strength and shape stability of the shutter 4.
it can.

[0023]

The method for manufacturing a shutter of a disk cassette according to the present invention is configured as described above and has the following effects.

A first aspect of the present invention is a light-transmitting synthetic resin sheet.
Between a non-translucent sheet made of a transparent sheet and a synthetic resin sheet
Printing layer facing the translucent sheet side and the non-translucent sheet side
Laminated with a metal deposited layer of aluminum etc. facing the
Sheet, and then punch the laminate sheet
After the construction, the U-shape so that the non-translucent sheet is placed inside
Injection molding using a metal mold
Transparent sheet, printed layer, metal vapor
At least four layers of the attachment layer and the non-translucent sheet,
Shutters that can be easily manufactured
High cost of mold design, fabrication and maintenance
Compared to shutters manufactured by certain injection molding methods
Thus, the shutter can be manufactured at extremely low cost. I
The print layer is made transparent by a metal deposition layer such as aluminum.
Floating in metallic tone (metallic tone) through light sheet
New design
The shutter can be manufactured very inexpensively.

A second aspect of the present invention is a light transmitting plate made of a synthetic resin sheet.
Non-translucent sheet made of transparent sheet and metal foil such as aluminum foil
Form a laminate sheet with a printing layer between,
Made of metal foil after stamping laminate sheet
Fold it into a U-shape so that the non-translucent sheet is placed inside
So as to bending, injection molding method using the mold
Without depending on the translucent sheet, printing layer and metal foil
At least three layers of non-translucent sheet
Data can be easily manufactured.
High cost of mold design, fabrication and maintenance
Compared to the shutter manufactured by the injection molding method,
In addition, the shutter can be manufactured at low cost. Moreover,
Printing layer on non-translucent sheet made of metal foil such as aluminum foil
Therefore, a metallic tone (metal
Tone), which greatly enhances the design.
New shutter can be manufactured at extremely low cost.
You. In addition, the non-translucent sheet is made of metal foil such as aluminum foil
This has resulted in a U-shaped
Can improve the strength and shape stability of the
High-strength, high-durability shutters.
You.

[Brief description of the drawings]

FIG. 1 is a view illustrating a method of manufacturing a shutter of a disk cassette according to an embodiment of the present invention.

FIG. 2 is a sectional view showing four modified examples of a laminate sheet.

FIG. 3 is a perspective view showing a disk cassette and a shutter.

[Explanation of symbols]

1 disk cassette 2 or a metal foil of the translucent sheet 6 synthetic resin sheet or aluminum foil or the like made of disc-shaped recording medium 4 shutter 4a shutter plate precursor 6 synthetic resin sheet
Ranaru non-translucent sheet 8 laminated sheet 10 characters printed layer 13 underprint layer 16 adhesive 16a translucent adhesive 19 deposited metal layer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 23/03-23/033

Claims (2)

(57) [Claims] 1. A light-transmitting sheet made of a synthetic resin sheet.
Any of the opposing surfaces of the non-translucent sheet made of synthetic resin sheet
On one side, the printing layer facing the translucent sheet side and the non-translucent sheet
A metal deposition layer such as aluminum facing the light-sensitive sheet
And to process, sticking the translucent sheet and non-translucent sheet with an adhesive
Forming a laminated sheet by laminating and, after punching the laminated sheet, the non-light-transmitting
Bending into a U-shape so that the sheet is placed inside
A disk cassette having a process of forming
Shutter manufacturing method. 2. A transparent sheet made of a synthetic resin sheet and
What is the opposite surface of the non-translucent sheet made of metal foil such as Lumi foil
Applying a printing layer to one of them, and applying the light-transmitting sheet and the non-light-transmitting sheet via an adhesive.
Forming a laminated sheet by laminating and, after punching the laminated sheet, the non-light-transmitting
Bending into a U-shape so that the sheet is placed inside
A disk cassette having a process of forming
Shutter manufacturing method.