KR200407612Y1 - Optical storage media having label area - Google Patents

Abstract

It provides an optical storage medium that can clean and easily label without any pen. To this end, in an optical storage medium which sequentially includes a first substrate, a first recording layer, a first reflection layer, a first protective layer and a printing layer from below, the second recording layer and the first recording layer from above on a part of the upper surface of the printing layer. An optical storage medium is provided, characterized in that a label recording area in which two reflection layers are laminated is formed.

Optical storage media, CD-Rs, labels

Description

OPTICAL STORAGE MEDIA HAVING LABEL AREA}

1 is a plan view of an optical storage medium according to an embodiment of the present invention.

FIG. 2 is a diagram schematically illustrating a side cross-sectional structure of a label area of the optical storage medium of FIG. 1.

3 is a plan view of a conventional optical storage medium.

Figure 4 is a schematic diagram showing the cross-sectional structure of the CD-R of the conventional optical storage medium.

5 is a bottom view of the CD-R with a part of the data recording surface recorded thereon.

* Description of Major Reference Marks *

10: label area 100: optical storage medium

12 substrate 14 recording layer

16: reflective layer 18: protective layer

19: printed layer 20: lead-in area

The present invention relates to an optical storage medium, and in particular, a recording layer on which the reflection characteristic is changed by laser irradiation is formed on the upper surface, and an optical storage medium capable of label recording using the same.

An optical storage medium is a medium for storing information by changing a set of 0's and 1's. Typical optical storage media are CD-ROMs, but there are other CD-Rs, CD-RWs, DVD-Rs, DVD + Rs, DVD-RWs, DVD + RWs, and DVD-RAMs. In the case of the typical CD-ROM, 0 and 1 are used to show small scratches on the surface of the CD-ROM. When the laser is shot on the CD-ROM, the light reflected from the flawed part (pit) and the missing part (land) is different, and the difference is recognized as 0 and 1 during playback.

However, unlike a CD-ROM, a medium such as a CD-R, in which a user can record data, forms a pit and land by burning a CD-R surface by irradiating a laser and using the difference in reflectance to produce data. Read it.

3 is a plan view of a typical optical storage medium CD-R, and FIG. 4 is a schematic diagram showing an enlarged cross-section thereof. In the figure, the optical storage medium is CD-R, but CD-RW, DVD-R, DVD + R, DVD-RW, DVD + RW, and DVD-RAM all have similar basic layer structures. Therefore, CD-R will be described as a representative. It can be seen that in the drawing, the CD-R 100 has a substrate 12, a recording layer 14, a reflective layer 16, a protective layer 18, and a printed layer 19 in this order. . The basic structure of the CD-RW is similar, except that there is a dielectric layer between the recording layer 14 and the reflective layer 16, and that the dye constituting the recording layer 14 is a phase change material.

When the laser is irradiated toward the CD-R 100 in the direction of the substrate 12 toward the substrate 12 (bottom of the drawing) of the CD-R 100, the laser passing through the synthetic resin substrate 12 is applied to the recording layer 14. On the other hand, the recording layer 14 exerts an exothermic reaction by light energy to form pits. Although the pits constituting the area 22 in which data is recorded by laser irradiation in FIG. 5 are small enough to be difficult to visually identify, the macroscopic view of the areas in which the data are not recorded is in the macroscopic view. Seen in different colors. The reference numeral 26 denotes a lead out area, which is an empty space, and serves to indicate that data recording is completed.

On the other hand, the color of the bottom of the CD-R (recording surface) is determined by what metal is used for the dye and the reflective film. For example, gold means that the reflective layer uses gold and the recording layer uses phthalocyanine, while white gold uses silver and phthalocyanine, respectively. Blue has a reflective layer of silver and a recording layer uses cyanine or azo dyes.

On the other hand, CDs of optical storage media are usually silkscreen printed in various colors and designs depending on the manufacturer. There is a space where the user can write the contents of the data recorded by the user, namely the title of the CD-R or CD-RW (hereinafter simply referred to as CD-R). In this space, the user writes down the title, recording date, and other contents of the CD-R as indicated by the numeral 30 in FIG.

However, when the user writes something on the upper surface of the conventional CD-R, the water-based pen is erased well, and the ball-point pen is not written well, so the oil-based pen should be used. Therefore, it was inconvenient to always have a planetary pen. Also, if you touch the pen before writing it completely dry, the pen will bleed, and you may get it on your hands or the top of the CD-R will be dirty. When recording several chapters, CD-Rs with different contents recorded are often not accurately distinguished, and they are often confused with unrecorded CD-Rs. Can be.

To solve this problem, various products for labeling have been developed. For example, there is a product that prints a description on a CD-shaped label and attaches it to a recorded CD. However, this requires a separate label purchase cost, and it is cumbersome to print the labels separately.

Therefore, there is a need for a technology capable of simply and conveniently describing contents to be recorded on the optical storage medium after the recording operation.

The present invention is to solve the problem of label creation in the above-described conventional optical storage medium, the recording layer and the reflective layer is applied on the upper surface, the CD-R which can act as a label by discoloring the desired letter shape by laser It is to provide.

In order to achieve the above object, the present invention provides an optical storage medium having the following structure.

In an optical storage medium comprising a first substrate, a first recording layer, a first reflection layer, a first protective layer, and a printing layer from below, the second recording layer and the second reflection layer from above the portion of the printed layer. An optical storage medium comprising a stacked label recording area.

In the optical storage medium, a substrate, a recording layer, a reflective layer, a protective layer, and a printing layer are made of a conventionally used material. In other words, the substrate is mainly polycarbonate, and the reflective layer is made of gold or silver. The protective layer is composed of several layers, and includes a basic lacquer coating layer, a UV protective layer for blocking UV rays, and a coating layer for preventing damage from scratches or fingerprints. The recording layer is a dye-coated layer and is coated with phthalocyanine, cyanine, azo and the like which are widely used at present. On the other hand, in the present invention, the part that serves as a label irradiated with the laser should be distinguished from other parts well, and it is preferable to represent various colors after irradiation, and thus, various compositions, dyeing ratios, etc. of the dye may be configured. have. In particular, when the laser is irradiated with a CD writer or the like, it is preferable that a dye having a large color change is applied so that the discoloration of the portion can be easily seen with the naked eye compared to the surrounding portion.

In the optical storage medium according to the present invention having the above-described configuration, the recording layer is also formed on the upper surface where the printing layer is formed in the conventional optical storage medium, thereby discoloring the recording layer by the same apparatus for recording the data. It is based on the principle of acting as a kind of label.

The label is made by flipping the optical storage medium on which recording is completed and putting it back into the writer and irradiating a laser to the label area. The laser then surveys a specific location on the label area indicated by the labeling program. When the laser irradiation is completed, the label area of the optical storage medium is formed so that the user's desired letters or patterns can be visually distinguished. That is, the recording layer irradiated by the laser in the label area of the present invention is not a layer in which meaningful data read by a CD-ROM drive or the like is recorded, but the color is simply changed due to the difference in reflection characteristics from the place where the laser is not irradiated. By being distinguished, it is seen macroscopically as a letter or a pattern. Therefore, the CD writer's irradiation of the laser in the label area corresponds to drawing or writing. On the other hand, when the medium is a CD-RW, the type of dye used for the recording surface of the medium is the same as that of the CD-R except that the type of dye is a phase change material and a dielectric layer is provided above and below the recording layer.

In the present invention, the laser is irradiated to the optical storage medium so as to form a font or pattern desired by a user by a label preparation program. Such a program can be easily implemented by those skilled in the art.

The label area is preferably formed in a fan shape of a size sufficient to form a label. In addition, it is more preferable that a lead-in area is formed in the concentric region extending over a predetermined width in the radial direction from the center of the optical storage medium. This concentric area is not an area where labels are created, but an area where information such as the structure and address of each track of the optical storage medium is stored. Thus, the labeling program knows the location of the label area. When the surface with the label area of the optical storage medium is placed in the writer and the label writing program is executed, the writer recognizes the area where the label should be written through the lead-in area, finds it, and starts labeling.

Hereinafter, the present invention will be described in more detail with reference to Examples.

1 is a plan view of an optical storage medium 100 according to an embodiment of the present invention. In this embodiment, the optical storage medium is CD-R. In the figure, the part indicated by 10 is a label area. The portion indicated by 20 is a lead-in area.

FIG. 2 is an enlarged view of a side cross section of the label region 10 of the CD-R 100 of FIG. 1. Fig. 2A shows the case where the recording layer of the label recording area is one layer 14b. In FIG. 2A, the data recording surface of the CD-R 100, that is, the bottom surface thereof, has a polycarbonate substrate layer 12, a recording layer 14a, a reflective layer 16, and a protective layer 18 from below. And the printed layer 19 are laminated in this order. The protective layer 18, the recording layer 14b, the reflective layer 16, and the protective layer 18 are sequentially stacked on the label region 10 of the label recording surface of the CD-R 100 from above. The dyes of layers 14a and 14b may be the same or different. The function of each layer is as described above. The protective layer 18 on the recording layer 14b prevents the recording layer 14b from being damaged by an impact from the outside or the like. The protective layer 18 between the reflective layer 16 and the printed layer 19 is a kind of buffering layer for preventing damage due to direct contact between the two layers or for facilitating the bonding of the two layers. In some cases, it may not be necessary.

On the other hand, Fig. 2B is the case where all other parts are the same as Fig. 2A, and the recording layer of the label recording area is formed of two layers. The recording layer 14b and the recording layer 14c are made of different kinds of dyes. Therefore, since the recording layer 14b and the recording layer 14c are melted together during laser irradiation, the mixed reaction is performed, and thus, various colors formed by the two dyes can be combined. For example, as shown in the table below, the two recording layers 14b and 14c and the reflective layer 16 may be combined to represent various colors.

Reflective layer Recording layer 14b Recording layer 14c One Silver (Ag) Cyanine Phthalocyanine 2 Silver (Ag) Phthalocyanine Cyanine 3 Au Cyanine Phthalocyanine 4 Au Phthalocyanine Cyanine 5 Silver (Ag) Cyanine 6 Silver (Ag) Phthalocyanine 7 Au Cyanine 8 Au Phthalocyanine

Hereinafter, a method of forming a label on the CD-R 100 having the above-described structure will be described.

The user takes out the data recording complete CD-R 100 from the CD writer, flips it over and puts it back into the writer. Then run the computer's label creation program. The label creation program is a program for inputting characters or graphics desired by a user and instructing the writer to write the input characters and the like on the CD-R 100. For example, if the user enters the program to create a label "Consideration on CD Labels" on September 9, 2005 (Friday), the writer who has been ordered to write from the program first reads as if writing a normal data. The phosphorus region 20 is read to obtain information about the position of the label region 10 of the CD-R 100. The laser is irradiated to the label region 10. The dye in the laser irradiated part forms a fine pit that is distinguished in color from the surroundings. Feet are tiny holes that are invisible to the naked eye, but are macroscopically distinguishable from other parts, forming the form of letters or patterns that the user has entered into the computer. Through this process, the CD-R 100 surface is permanently beautifully formed with various fonts and labels in the pattern.

Although the present invention has been described through preferred embodiments, it is not intended to limit the present invention, and various modifications are possible.

For example, in the above-described embodiment, the recording layer using the dye was burned with a laser to form a pit, and a color was made using the reflection property of light thereof, but the surface was roughly deformed by laser irradiation only, not the dye, A material may be coated that allows the reflective properties of the light to be changed relative to the unirradiated portion.

Therefore, it should be understood that such modifications fall within the spirit of the present invention described in the appended utility model registration claims.

As described above, according to the present invention, the optical storage medium having the label area can clean and easily perform label preparation without a separate pen. In particular, when recording a plurality of media, it is possible to perform accurate labeling without changing the recorded data and labels.

Claims (3)

An optical storage medium comprising a substrate 12, a first recording layer 14a, a reflective layer 16, a protective layer 18, and a printing layer 19 in order from below, wherein a part of the upper surface of the printing layer 19 is provided. And a label recording area in which a protective layer (18), a second recording layer (14b) and a reflective layer (16) are stacked from above. The optical storage medium according to claim 1, wherein a third recording layer (14c) is further formed between the second recording layer (14b) and the protective layer (18). The recording layer according to claim 1 or 2, wherein a recording layer is formed in as many concentric circles that extend a predetermined width in the radial direction from the center of the optical storage medium, and the information on the position and structure of the label recording region is stored in this region. Optical storage medium, characterized in that.

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