JP3017984U - Disk case for recording media - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a disk case for a recording medium in which the edges of a label or the like are not easily peeled off and the label can be easily replaced. [Structure] In a disk case 10 for a recording medium having a label sticking surface 11 on the surface, the label sticking surface is composed of a smooth surface 13 provided along the outer periphery thereof and a fine uneven surface 14 inside thereof.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a disk case for a recording medium.

[0002]

[Prior art]

 In recent years, magneto-optical disks have come to be used in addition to conventional floppy disks as information recording media used in personal computers and the like. In these recording media, a disc-shaped recording medium disc is stored in a synthetic resin disc case so that a person or the like does not directly touch the recording medium.

By the way, since the floppy disk and the magneto-optical disk are readable and writable, it is necessary for the user to clarify the contents currently recorded on the disk. Therefore, it is often the case that a label sticking surface is provided at an appropriate position on the surface of the disk case, and a label or the like stating the recorded contents is stuck. The label sticking surface is formed by recessing the disk case surface by about the thickness of the label so that the label thickness does not appear on the surface of the disk case when the label is stuck on the sticking surface.

However, the surface of the disk case, in particular, the surface of the disk case for the magneto-optical disk is generally in the form of a satin-like texture having fine texture in terms of touch and appearance. In addition, the peeling strength of the label-attached surface to the label is adjusted as the entire surface is satin-finished in consideration of the fact that the label is replaced every time the recording content on the recording medium is changed. Such a satin-like label-applied surface is excellent in easiness of replacement, but since the label does not adhere to the disk case surface, the edge of the label sometimes peels off. The edge of the label peeled off in this way not only makes it difficult to insert the disc into the drive unit, but also makes it easy for dust or dirt to adhere to the adhesive surface, which causes malfunction of the system. Or cause trouble.

[0005]

[Problems to be solved by the device]

 The present invention has been proposed to solve such a problem, and an object thereof is to provide a disk case for a recording medium in which an edge of a label is hard to be peeled off and a label can be easily replaced. Is.

[0006]

[Means for Solving the Problems]

 That is, the disk case for a recording medium of the present invention is a disk case for a recording medium having a label sticking surface on the surface, and the label sticking surface is a smooth surface provided along the outer periphery thereof and a fine uneven surface inside thereof. It consists of and. The disk case of the present invention is not limited to a magneto-optical disk, but is suitable as a case for other disk-shaped recording media such as a floppy disk.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a front view showing an example of the disc case of the present invention, FIG. 2 is a rear view thereof, FIG. 3 is an enlarged sectional view of a label sticking surface, and FIG. 4 is a cross section showing a state where a label is stuck on the label sticking surface. It is a figure.

The disk case 10 of the present invention has a label sticking surface 11 on its surface. Reference numeral 12 is a shutter. The disk case 10 is made of an appropriate synthetic resin molded product, and a disk-shaped recording medium disk (such as a magneto-optical disk) (not shown) is housed and used. The shape and dimensions of the disc case 10 are appropriately determined depending on the type or size of the recording medium.

The label sticking surface 11 is a place for sticking a label clearly indicating the recorded contents of the recording medium, and is formed of a smooth surface 13 and a fine uneven surface 14. As can be understood from FIGS. 1 to 3, the label sticking surface 11 in the present embodiment is provided from the front side to the back side of the disk case 10. When the label is applied to the label-applying surface 11, when the label thickness appears on the surface of the disk case, the tab may be caught by the nail and the label may be peeled off. It is formed by recessing the label to a thickness (about 0.2 to 0.3 mm).

The smooth surface 13 is for firmly adhering to the adhesive surface of the label so that the edge of the label applied to the label applying surface 11 does not come off, and its surface roughness (height difference of unevenness). ) Is 3 μm or less. The smooth surface 13 is formed with a constant width along the outer shape of the label sticking surface 11 so as to correspond to the size of the sticker label. The width of the smooth surface 13 is 2 to 10 mm, preferably 4 mm. If the width of the smooth surface 13 is smaller than 2 mm, the edge of the label may not be positioned on the smooth surface 13 when a small label is used, and the label edge may not surely adhere. If the width of the smooth surface 13 is larger than 10 mm, the label may be too closely attached to the sticking surface 11 and it may take time to replace the label.

The fine concavo-convex surface 14 is for facilitating the replacement of the label adhered to the label adhering surface 11, and has a fine textured satin finish. By doing so, the adhesive surface of the label is prevented from being too close to the label sticking surface 11, and the adhesive force is adjusted. The uneven surface 14 is formed inside the smooth surface 13, and has a surface roughness (height difference of unevenness) in the range of 5 μm to 50 μm. In this embodiment, it is 20 μm. When the surface roughness of the uneven surface 14 is smaller than 5 μm, the adjustment of the adhesive force of the label becomes insufficient. On the other hand, when it is larger than 50 μm, not only the unevenness becomes apparent and the surface of the attached label becomes uneven, but the feel of the disc case becomes worse. In this embodiment, as understood from FIGS. 1 and 2, in order to improve the feel and appearance of the disk case, the entire surface of the disk case 10 excluding the smooth surface 13 is referred to as the uneven surface 14. It is formed by the same fine uneven surface, and the whole has a satin finish.

According to this structure, as can be understood from FIG. 4, since the edge L1 of the label L attached to the label attaching surface 11 is in close contact with the smooth surface 13 on the outer periphery of the label attaching surface 11, There is no risk of peeling. Further, since the inside of the edge of the label L is adhered to the fine uneven surface 14 of the label sticking surface 11, it does not adhere so strongly and can be easily peeled off. Therefore, when the label L is peeled off from the sticking surface 11, the other edge can be easily peeled off if the edge L1 of the label L is slightly forcibly peeled off, and the label L can be replaced easily. Furthermore, the label can be easily peeled off even when the disc case is discarded or recycled, which simplifies the processing step.

Next, the results of an examination of the adhesive force of the label on the label sticking surface of the disc case of the present invention will be shown. The disk case for the recording medium used was a 3.5-inch disk case as shown in FIGS. 1 and 2, and a smooth surface having a surface roughness of 1 μm and a width of 4 mm was formed on the outer periphery of the label sticking surface. It is provided over. The other part of the above-mentioned label sticking surface is constituted by a fine uneven surface having a surface roughness of 20 μm.

A label is attached to the label attaching surface of such a disc case, and the label is attached at 50 ° C. and humidity of 90% R.V. When exposed to H for 480 hours, no label peeling was observed even at the edge of the label. In contrast, in the case of a disc case in which all the label-attached surfaces were made up of fine irregularities, when the label was attached in the same manner and examined, several peelings were observed at the label edges.

Further, the load required for peeling the label from the label-attached surface of the disk case was measured, and the ease of reattachment was tested. First, a label was attached to the label attachment surface of the disc case, and the maximum load required when pulling off one end of the label and peeling it off was measured. In contrast, the same measurement was carried out for a disk case in which the above-mentioned label-adhering surface which is generally used is composed of fine irregularities, and a disk case in which the entire label-adhering surface is composed of a smooth surface. As a result, the disc case of the present invention required 680 gf for peeling the label. Also, in the case of a disc case where the label sticking surface is made up of fine irregularities, the load required for peeling is 600 gf, while in the case where it is made up of a smooth surface it is 1200 gf. Had the same ease of peeling as conventional products. And I could replace them smoothly without any problem.

[0016]

[Effect of device]

 As shown and described above, according to the disk case for a recording medium of the present invention, since the label sticking surface is composed of the outer peripheral smooth surface and the fine uneven surface inside thereof, the edge of the label is The disc case firmly adheres to the disc case and does not come off, but since the other parts have fine irregularities, the label is not easily re-attached.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a disk case for a recording medium of the present invention.

FIG. 2 is a rear view thereof.

FIG. 3 is an enlarged cross-sectional view of a label sticking surface.

FIG. 4 is a cross-sectional view showing a state in which a label is attached to the label attaching surface.

[Explanation of symbols]

 10 Disk Case for Recording Medium 11 Labeling Surface 13 Smooth Surface 14 Uneven Surface

Claims (3)

[Scope of utility model registration request] 1. A disk case for a recording medium having a label sticking surface on a surface thereof, wherein the label sticking surface is composed of a smooth surface provided along an outer periphery thereof and a fine uneven surface inside thereof. Disk case for recording media. 2. The surface roughness according to claim 1, wherein the smooth surface has a surface roughness of 3 μm or less, and the uneven surface has a surface roughness of 5 μm to 50 μm.
A disk case for a recording medium, which is in the range of μm. 3. The disk case for a recording medium according to claim 1, wherein the smooth surface has a width of 2 to 10 mm.