JPS63194994A - Optical information record carrier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical information recording carrier for optically recording or reproducing information.

[Prior Art] Conventionally, various types of media such as disks, cards, tapes, etc. are known as media on which information is recorded using light and from which the recorded information is read. Among these, card-shaped optical information recording media are expected to be in great demand as mediums with large storage capacities that are small, lightweight, and convenient to carry.

The structure of an optical card as a conventional optical information recording carrier is
The recording medium is sandwiched between plastics from both sides, and the plastic on the surface of the medium is transparent. Information is recorded by irradiating the recording medium with a laser beam through a transparent plastic member to form pit-shaped holes, and for reproduction, the reflectance of the reproduction laser beam irradiated onto the formed bits is used as a signal. This was done by reading it as .

However, the above-mentioned transparent plastic member provided on the surface of the medium can easily get scratches, fingerprints, oil, dirt, etc. on the surface depending on how the optical information recording carrier is handled by the holder, making it difficult to record and reproduce information! ! ! In the worst case, recording and playback may become impossible.

In addition, if the hardness of the plastic member provided on the medium surface is increased, it will be less likely to be scratched, but this may cause cracks to occur on the surface due to bending of the optical information recording carrier, leading to the recording and reproduction of information. have a negative impact on

Furthermore, when recording or reproducing an optical information recording carrier that has fingerprints, oil, etc. attached to its surface, it is necessary to clean the surface of the optical information recording carrier in advance. A separate cleaning machine configuration or cleaning device is required, which has disadvantages in terms of cost and operability.

In addition, the medium of the optical information storage 1a carrier is easily affected by humidity, and if it is kept in a hot and humid place, the pit shape may change, which may lead to data destruction.

Countermeasures against these drawbacks can be achieved by housing the optical information recording carrier in the case, but W
In terms of usability, especially portability, the thickness of the card is thicker than conventional magnetic cards, making it difficult to store it in a carrying case such as a commuter pass, and the amount of displacement due to bending of the card is greater than the case. Since there are fewer of them compared to cards, there was a possibility that this could lead to the destruction of cards.

[Problems to be Solved by the Invention] The invention was made with the intention of solving the problems of the prior art as described above, and is aimed at improving portability and portability of optical information recording carriers. We aim to provide an optical information recording carrier that is not affected by scratches, dust, fingerprints, oil, etc. even if it is handled roughly in normal usage, and has excellent environmental resistance. It is something to do.

[Means for Solving the Problems] That is, the present invention provides a card-shaped record carrier for optically recording and reproducing information, in which the recording medium surface is smaller than the outer surface area of the card-shaped record carrier. An optical information recording carrier characterized in that the protective sheet is removably adhered to a portion of the recording carrier other than the recording medium surface.

In the present invention, it is preferable that the size of the protective sheet is smaller than at least one of the long side or the short side of the card-shaped record carrier.

Further, it is preferable that the edges of the protective sheet have rounded or chamfered corners.

Furthermore, it is preferable that at least one end of the protective sheet is provided with a non-adhesive portion that can be pinched, and the portion is formed so that it can be peeled off by pinching it with fingers or the like.

[Function] The optical information recording carrier of the present invention can optically record and record information.
In a card-shaped record carrier for reproduction, the recording medium surface is covered with a protective sheet that is smaller than the outer surface area of the card-shaped record carrier, and the protective sheet is removable at a portion of the record carrier other than the recording medium surface. Since it is attached,
When carrying or handling an optical information recording carrier, it is possible to prevent external scratches, dust, fingerprints, oil, etc. from adhering to the surface of the recording medium, and the outer shape of the protective sheet can be made smaller than the outer shape of the card. By making the card smaller and forming the corners of the end in a rounded shape, etc., it is possible to prevent the protective sheet from being accidentally peeled off and damaging the surface of the recording medium when the card is being carried or handled. .

[Example] Hereinafter, the present invention will be described in more detail based on the example shown in the drawings.

FIG. 1 is a plan view showing an embodiment of an optical information recording carrier (hereinafter referred to as an optical card) of the present invention, and FIG. 2 is a perspective view thereof. In the same figure 1.

In the optical card of the present invention, the recording medium surface 1a provided on the card-shaped record carrier 1 is smaller than both the long side and the short side of the card-shaped record carrier l, so that the outer surface area is smaller than the record carrier l. covered with a protective sheet 2 smaller than
The protective sheet 2 is removably adhered to the recording carrier 1 at a portion other than the recording medium surface 1a of the recording carrier 1, and the four edges 7 of the protective sheet 2 are formed in a rounded shape, and the edge 1 A non-adhesive portion 3 is provided to be hooked and held with a nail or the like when the protective sheet 2 is peeled off.

On the recording medium surface 1a, information data is written linearly in the longitudinal direction of the recording carrier l. Further, the protective sheet 2 is a removable sheet having adhesive properties except for the portion corresponding to the recording medium surface 1a of the recording carrier 1.

The protective sheet 2 can be removed from the recording carrier 1 by hooking the non-adhesive portion 3 with a nail or the like and peeling it off in the direction of the arrow 4, as shown in FIG.

In the above configuration, the record Jl! is recorded on the recording medium surface la side of the record carrier l. ! Since the protective sheet 2 is attached with a size smaller than the external shape of the body L, even if the user of the optical card gets scratches, dirt, fingerprints, oil, lipstick, etc. while carrying it on a daily basis, it will not be damaged. Because they have protective sheet 2,
Information can be recorded and reproduced on the recording medium surface 1a without any adverse effects.

:IS3 Figures (a) and (b) are explanatory diagrams showing other embodiments of the optical card of the present invention, where Figure 3 (a) is a plan view showing the recording medium side, and Figure 3 (b) is a plan view showing the recording medium side. 5 represents a bottom view showing the back side of the card; 5 represents a card-shaped record carrier;
a is the recording medium surface, and the information data is concentric or circular with the center hole 6 as the center.

written in a spiral. The protective sheet 2 is attached to the recording carrier 5 except for the non-adhesive portions 3 and 8. In addition, 3 is a non-adhesive part for facilitating peeling.

4(a), (b) and FIG. 5(a), (b) respectively show further modified examples of the embodiment of the present invention, and (
a) and (b) respectively represent a plan view showing the recording medium side and a bottom view showing the ↓ side thereof.

FIG. 4 shows an example of an optical card in which a protective sheet 2 smaller than the longitudinal width of the long side of the record carrier 1 is folded back and pasted to the back side of the record carrier l, and FIG. A protective sheet 2 smaller than the short side width of l,
An example of an optical card is shown in which the optical card is folded back and pasted to the back side of the record carrier l in the same manner as above. As shown in the above example, the protective sheet 2 has an R-shaped end corner and is narrower than either the longitudinal direction or the lateral direction of the record carrier.
If so, it may be folded back and releasably attached to the back side of the recording carrier I.

When recording/reproducing recorded information data on a recording medium provided in the longitudinal direction of an optical card, this is done by reciprocating the optical card itself relative to the recording/reproducing area. The standard for reciprocating interlocking is the card end face in the longitudinal direction of the optical card, so during daily carrying,
If the end face of the card is dented, the card may not be able to move back and forth normally, and problems such as skew of the information track or uneven card feeding may occur.

Therefore, by attaching a protective sheet to protect the longitudinal direction of the optical card as shown in Figure 4, it is possible to protect the recording medium surface as well as the dents and other scratches that occur on the end surface of the card during daily carrying. becomes.

Further, in each of the embodiments shown above, the corners of the outer edges of the protective sheet are formed in a rounded shape, but they may be formed in a chamfered shape as shown in FIG. It is fine as long as it is difficult to peel off from the corner while carrying the card.

The material of the protective sheet used in the present invention may be any material that has a protective effect against scratches, dust, fingerprints, oil, etc. and has low adhesive strength. Here are some specific examples:

Examples include low-tack vinyl, polyethylene, vinyl chloride, polyester, polyurethane, and the like.

The protective sheet is not limited to transparent, opaque, colored, etc., and any type can be used. Also,
The thickness of the protective sheet does not need to be particularly limited, but it is usually 0.
．． 2@m or less is preferable, especially 0.05 to 0. +
5@m is preferred.

Further, as a method for attaching the protective sheet to a portion of the recording carrier other than the recording medium surface, it is possible to apply an adhesive to the protective sheet or to attach the two using double-sided adhesive tape and the protective sheet.

Furthermore, in each example, the non-adhesive portion is formed by pasting a thin non-adhesive sheet to one end of the protective sheet, but the non-adhesive portion is formed by pasting a thin non-adhesive sheet to one end of the protective sheet. Moreover, since it is sufficient that only a portion of the end portion of the adhesive protective member has non-adhesive properties and is easily peeled off, a protective sheet may be used in which only this portion is not coated with adhesive.

Furthermore, if a flexible protective sheet is used, the plastic of the optical card itself can be made of a flexible material, so there is no need to worry about cracks or the like occurring due to bending of the optical card.

Furthermore, by peeling off the protective sheet, recording and reproducing information on the recording medium, and then pasting the protective sheet again, the optical card cleaning mechanism can be separated from the information recording or reproducing device as in the past. There is no need for it.

Further, due to the structure of conventional optical cards, in order to bring out the individual characteristics of the optical card in terms of design, there was only a part other than the recording part where designs such as pictures, colors, letters, numbers, etc. could be designed. However, by printing on the protective sheet,
The designed part can be printed on the entire surface of the card, making it possible to provide an optical card with a unique and colorful design.

Furthermore, if the protective sheet is made of a material that can be read with a felt pen or the like, it can also be used as a heading for recording the contents written on an optical card, and the protective sheet can be used in a wide range of other ways.

[Effects of the Invention] As explained above, the optical card of the present invention has a removable protective sheet attached to the recording medium side, thereby preventing scratches on the surface when the optical card is handled or carried. Fingerprints, oil, dirt, etc. will adhere to the protective sheet, and the transparent plastic material on the surface of the recording medium will be protected. Therefore, hook the non-adhesive part of the protective sheet with your finger and peel it off before recording or playing back information. By doing so, it is possible to provide an optical card that can perform reliable recording and reproduction without being affected by scratches, fingerprints, oil, dust, etc.

In addition, since the outer shape of the protective sheet is smaller than the shape of the carrier mentioned above, and the corners are formed in a rounded shape,
Even if the card is stored adjacent to other magnetic cards in a commuter pass, Sai 7, etc. and carried, the protective sheet will not be turned up or peeled off while being carried.

In addition, by limiting the adhesive area to which the protective sheet is attached to areas other than the surface of the recording medium, even if the adhesive remains on the card surface when the protective sheet is peeled off, the information Adverse effects on recording and playback can be avoided.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the optical information recording carrier according to the present invention, FIG. 2 is a perspective view thereof, FIGS. 3 to 5 each show other embodiments, and FIG. a), Fig. 4(a), and Fig. 5(a) are plan views, Fig. 3(b), Fig. 4(b), and Fig. 5(b) are bottom views, and Fig. 6 is a protective sheet. It is an explanatory view showing the corner of the end part. 1.5-... Record carrier la, 5a... Recording medium surface 2... Protective sheet 3... Non-adhesive portion 6... Center hole 7... Corner 8... Non-adhesive portion

Claims (4)

[Claims] (1) In a card-shaped record carrier that optically records and reproduces information, the recording medium surface is covered with a protective sheet smaller than the outer surface area of the card-shaped record carrier, and the protective sheet is used to record information on the record carrier. 1. An optical information recording carrier, wherein the optical information recording carrier is peelably attached to a portion other than the medium surface. (2) The optical information recording carrier according to claim 1, wherein the size of the protective sheet is smaller than at least one of the long side or the short side of the card-shaped recording carrier. (3) The optical information recording carrier according to claim 1, wherein the corners of the end portion of the protective sheet are formed in a rounded shape or a chamfered shape. (4) The optical information recording carrier according to claim 1, wherein a non-adhesive portion that can be pinched is provided at at least one end of the protective sheet.