JP2000021129A - Optical information storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a CD where visual information that can be recognized from a printed surface side and a data surface are printed by performing overlapping printing regardless of doubled-sided printing. SOLUTION: A transparent substrate 3 is provided, a data-recording part is provided on the substrate 3, and a printed layer is formed on the surface of the substrate 3. The printed layer is composed of a first printing layer 9 for a data surface, and a second printing layer 13 for a surface. In the first printed layer 9, visual information is printed, where the visual information can be normally recognized when viewed from the side of the data surface. On the other hand, in the second printed layer 13, the visual information is printed, where the visual information can be normally recognized when viewed from the surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc-shaped optical information recording medium (hereinafter, referred to as "CD") on which music or the like is recorded. In particular, by superimposing the visual information on the surface opposite to the surface from which the data of the CD is read (hereinafter referred to as the “data surface”), the visual information that can be viewed from the data surface and the overprinting are printed. The present invention relates to a CD on which visual information that can be viewed from the side of the surface (hereinafter referred to as “printing surface”) is formed.

[0002]

2. Description of the Related Art The structure of a conventional CD is shown in FIG. The CD main body 101 has a substrate 103 formed in a disc shape with a transparent polycarbonate resin or the like. On the surface of the substrate 103, a data recording unit 107 made of a reflective layer such as a metal film is formed. Reference numeral 105 denotes a hole formed in the center of the substrate 103, which is to be mounted on a rotating shaft of the reading device. The data recording unit 107 is formed with fine irregularities (not shown) called pits, and by applying laser light to the irregularities and reading the reflected light, digital data such as music information is recognized or reproduced. Or something you can do. The reading device is generally called a CD player or a CD drive, but a detailed description of the device is omitted.

[0003] In particular, the CD main body 101 shown in FIG. 7 has an outer shape with a diameter of about 12 cm.
7 is formed in the same size as a CD having a diameter of about 8 cm, which is generally called a "single CD" for music. One side of the CD body 101 is a data side, and the other side opposite to the data side is C-printed by silk printing or the like.
A print layer 113 on which visual information such as the title of D is printed is formed. Since the data recording portion provided on the substrate 103 has only a size corresponding to a diameter of 8 cm CD, the substrate 103 from the portion of about 8 cm in diameter to the outer periphery of about 12 cm in diameter transmits from the data surface to the printed layer 113. It is in a state where it can be seen. Therefore, from the data side, the CD body 1
When 03 is viewed, the back side of the print pattern printed on the print layer 113 is visible. No visual information was posted on the back side of the print layer 113 viewed from the data surface side.

[0004] When a general music CD is sold, the music CD is stored in a special CD case, and at the same time, a booklet on which lyrics and other music information are printed is stored in the case. In addition, illustrations, characters, and other various information, which are designed in the image of the recorded content of the CD and the like, are printed on the printed surface of the CD.

[0005]

In the above-mentioned conventional CD,
When the CD was viewed from the data surface side, only the back side of the printed layer printed on the opposite surface was visible except for the data recording portion, and there was no publication that could be recognized as visual information.
Therefore, the back side of the print layer viewed from the data surface is an unused waste area in a small CD surface area. In addition, printing on the data surface area other than the area where the data recording unit is provided and posting the visual information is performed due to problems such as contamination of the data surface due to printing and obstruction of data reading. Could not. Furthermore, since information that can be visually recognized from the data side is not included in the conventional CD, even if the CD is viewed from the data side, the title, contents, and the like of the CD cannot be known.

[0006] In addition, unless a booklet printed with music information and the like attached at the time of selling a CD is a singer's photo book or other value added as a booklet, the number of songs, lyrics, and artists are added. In the case of the purpose of displaying the above data and other mere information, the information was necessary but the booklet was an obstacle. Furthermore, when the booklet is lost or when a CD is stored in another holder that stores only a large number of CDs, the booklet is not on the spot and the information to be viewed cannot be immediately known.

[0007] The CD of the present invention has been invented in view of the above points, and without performing printing on the data surface side,
It is an object of the present invention to provide a CD that can publish information visually recognizable from the data surface side in an area other than the data recording section, which has conventionally been an unused area. It is another object of the present invention to provide a CD in which information that can be viewed from both sides is printed by performing printing on only one side so as not to contaminate the data surface or disturb data reading. Further, even when a CD is viewed from the data side, the title and contents of the CD can be known.
D is provided.

[0008] In addition, the attachment of the booklet may be omitted by printing the contents of the booklet containing the music information and the like on a CD, and the contents of the booklet may be printed on a CD even if the booklet is lost. Therefore, an object of the present invention is to provide a CD that allows the user to immediately see the information he wants to know even if the booklet is not present.

[0009]

Means for Solving the Problems The present invention is provided with the following constitution in order to solve the above-mentioned problems. That is, (a) having a substrate , a data recording portion provided on the substrate, and a printing layer formed on the surface of the substrate. (B) The substrate is formed of a transparent material into a thin disk shape having a hole at the center. (C) The data recording section is provided in a region having a diameter smaller than the maximum diameter of the substrate and has digital data that can be read optically, and reads digital data from the data surface side that is the back surface of the substrate. Is possible. (D) The print layer is composed of a print section for the data side and a print section for the front side. (E) In the printing section for the data surface, visual information of contents recognizable from the data surface side is posted in an area other than the portion where the data recording section is provided. (F) The printed portion for the front surface has visual information of contents recognizable from the front surface side.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described.
This will be described with reference to FIGS. First, FIG. 1 is a partial cross-sectional view of an optical information recording medium main body (hereinafter, referred to as a “CD main body”) 1 of the present invention.
This is an enlarged view of the dimension in the thickness direction. FIG.
1 shows the CD main body 1 viewed from a side on which a print layer is formed (hereinafter, referred to as a “print side”). The CD main body 1 is provided with a data recording portion 7 in which optical information is recorded on a substrate 3 mainly formed by molding a polycarbonate resin, and a printing surface which is one side surface of the substrate 3 for covering and protecting the data recording portion 7. The protective layer 11 is provided, and the printed layers 9 and 13 are provided on the surface of the protective layer 11.

The CD main body 1 will be described in more detail. The substrate 3 constituting the CD main body 1 is a thin disk having a diameter of about 12 cm, and a hole 5 is provided at the center thereof. The hole 5 is for fitting the CD main body 1 to a rotary drive shaft of a reproducing device (not shown) such as a CD player. A portion of the peripheral edge of the hole 5 with a length of about 10 mm is a clamp area 15. The clamp area 15 is an area for the reproducing apparatus to hold (clamp) the CD main body 1, and printing or the like is not performed in this area. Further, the substrate 3 is provided with a data recording section 7 composed of a reflective layer formed of a metal film or the like. Fine irregularities (pits) are formed in the data recording section 7. The irregularities are for irradiating a laser beam from one side (data surface) of the substrate 3 and detecting the reflected light to extract digital data such as music information. In the present embodiment, the data recording section 7 has a diameter of about 8
cm from the position excluding the clamp region 15. When compared to a music CD, the outer shape is 12
Data recording unit 7 is 8cm despite being a cm size CD
Size CD (usually called "single CD")
It is provided with substantially the same size as.

On the printing surface of the substrate 3 opposite to the data surface, there is formed a printing layer on which visual information consisting of characters, figures, symbols and the like is printed. This printing layer will be described in more detail. On the surface of the protective layer 11 provided on the printed surface of the substrate 3, a first printed layer 9 is formed in a region from a position of about 8 cm in diameter to near an outer peripheral edge. The first print layer 9 is printed such that the printed visual information has a normal posture when viewed from the data surface side. That is, when the first print layer 9 is viewed through the substrate 3 formed of transparent polycarbonate from the data surface side, the characters, figures, and symbols formed on the first print layer are not inverted and are normal. It is ready to be read. The first print layer 9 is printed by a method usually used for printing a CD such as silk printing.

A second printing layer 13 is printed on the printing surface of the substrate 3, in the region including the first printing layer 9 except for the outer peripheral portion of the substrate 3 and the clamp region 15. Visual information such as characters, figures, and symbols is formed on the second print layer 13. Like the first print layer 9, the print layer is formed by a method commonly used for CD printing such as silk printing. Are formed. Each of the printing layers 9 and 13 forms one pattern or the like by overlapping several layers of several kinds of colors.

As the print content of the first print layer 9, for example, a print representing the content of a CD such as the title of a CD can be printed. The second print layer 13 seen from the surface naturally has a CD
Of the first print layer 9
The same content can be posted on the website. Thus, the contents of the CD can be known from both sides of the CD.

With the above configuration, as shown in FIG.
The data storage unit 7 is provided on the CD main body 1 so as to be optically readable from the data surface side. In addition, the first print layer 9 can be viewed from the data surface side in an area other than the data recording unit 7 when viewed from the data surface side. Conventionally, information display by printing was performed only on the printing surface side, but with the configuration of the present application, it is possible to perform information display that can be visually viewed from both the printing surface and the data surface, and more information than in the past Was published on one CD.

Further, since all the printing layers such as the first printing layer are provided on the printing surface side, adverse effects such as contamination of the data surface by the paint and influence on data reading occur. Absent. Further, the first print layer 9 has C
By printing the contents of the CD such as the title of D,
This has the effect that the contents of the CD can be known from both sides of D.

As described above, the embodiment of the present invention is applied to a music C
D has been described as an example, but the CD of the present invention is a music C
The invention is not limited to D, and a CD-ROM in which a software program is recorded is also included in the technical scope of the present application. In addition, as an example of the printing method, silk printing has been described. However, printing on a CD according to the present invention is not limited to silk printing. Included.

[0018]

An embodiment of the present invention will be described below with reference to FIGS. First, FIG. 4 shows a state of a music optical information recording medium main body (hereinafter, referred to as “music CD main body”) 31 of the present invention as viewed from the front side (hereinafter, referred to as “printing surface”) side. FIG. 5 is a partial cross-sectional view of the music CD main body 31, and shows a cross section taken along line BB in an enlarged manner in a thickness direction. FIG. 6 shows the music CD body 3
1 shows a state viewed from the back side (hereinafter referred to as “data side”).

The music CD main body 31 is provided with a data recording section 39 for recording optical information on a substrate 33 mainly formed of polycarbonate resin, and further provided with a protective layer 41 for covering and protecting the data recording section 39. The surface of the layer 41 has a structure in which a printing layer is provided. The printing layer is formed of a first printing layer 44 visible from the data surface side and a second printing layer 43 visible from the surface.

The music CD main body 31 will be described in more detail. The substrate 33 constituting the music CD main body 31 is a thin disk having a diameter of about 12 cm, and a hole 35 is formed in the center thereof. The hole 35 is for fitting the music CD main body 31 to a rotary drive shaft of a reproducing device (not shown) such as a CD player. The circumference of the hole 35 is more than 10 mm
Is a clamp area 37. Clamp area 37
Is an area for the playback device to hold (clamp) the music CD main body 31, and printing or the like is not performed in this area.
Further, the substrate 33 is provided with a data recording section 39 made of a reflective layer formed of a metal film or the like. Fine irregularities (pits) are formed in the data recording section 39.
The irregularities are for irradiating a laser beam from the data surface side of the substrate 33, detecting the reflected light, and extracting digital data such as music information. In the present embodiment, the data recording section 39 is provided in an area excluding the clamp area 37 from the position of about 8 cm in diameter of the substrate 33 toward the center. When compared to a typical music CD, the outer shape is 12c
Data recording unit 39 is 8cm despite being an m-size CD
It is provided with a size substantially the same as the size CD (single CD).

The first print layer 44 and the second print layer 43 will be described in more detail. A first printing layer 44 is formed on a printing surface of the substrate 33 in a region from a position having a diameter of about 8 cm to a position near an outer peripheral edge. First printing layer 44
Are printed so that the printed visual information has a normal posture when viewed from the data surface side. That is, when the first print layer 44 is seen through the substrate 33 formed of transparent polycarbonate from the data surface side, the first print layer 44 can be read normally without being inverted.

In this embodiment, as shown in FIG. 5, as the first print layer 44, the title 45 of the music recorded on the music CD main body 1, the lyrics 47 of each music, the photograph 49 of the artist, and the like are printed. Have been. More specifically, the song titles 45a, 45b and 45c are arranged at substantially equal intervals, and the lyrics 47a, 47b and 47 are provided near the song title 45.
c, and artist photos 49a, 49b, and 49c are printed in spaces other than the song titles 45a, 45b, and 45c and the lyrics 47a, 47b, and 47c, respectively. Titles 45a, 45b, 4 of these songs
5c, lyrics 47a, 47b, 47c, artist photos 49a, 49b, 49c, etc. are the contents of a booklet that is usually attached at the same time as a normal music CD is sold.
The first print layer 44 is printed by a method usually used for printing a CD such as silk printing. Further, when the content indicating the type of the CD is posted on the data surface of the CD, it is possible to recognize the type of the CD by looking at both sides of the CD.

The second print layer 43 has characters formed by designing the title of the music CD body 1. still,
The second print layer 43 is printed by a method usually used for printing a CD such as silk printing.

[0024]

The CD (optical information recording medium) of the present invention described above has the following effects. That is, in the conventional CD, visual information by printing was formed only on one side surface of the print layer side, but the CD of the present application was able to post visual information that can be seen from the data side.
As a result, the area other than the data recording section, which has not been used in the past, can be effectively used, and it becomes possible to post more visual information by printing than in the past.

Further, even with visual information that can be viewed from the data surface, since printing is performed from the printing layer side opposite to the data surface, problems such as contamination of the data surface and obstruction of data reading occur. Never.

Also, by displaying the contents of the CD as visual information for the data surface, it is possible to recognize what the CD is, whether by looking at the data surface or the print surface, and to print the print surface as before. There is an effect that there is no need to check the side. Thus, for example, even when stored in a CD case or a holder, it can be stored without concern for the mounting direction. Since at least one side of a normal CD case or the like is transparent, the type of CD can be known by looking at either side of the mounted CD without being influenced by the mounting direction of the CD.

As described above, the music CD of the present invention has a booklet attached to the CD for the purpose of merely displaying information having no added value in terms of design, such as songs, lyrics, artist photos and data. In some cases, the effect is exhibited. In other words, by displaying the title of the CD, etc. designed as before, on the surface of the second printed layer, mere information having no design value is stored without impairing the consumer's willingness to purchase. By printing on one print layer and making it visible from the data side, for example, an attached booklet such as a lyrics card could be omitted. As a result, it was possible to reduce the cost during CD manufacturing. Further, when a booklet is lost or a CD is stored in a holder that stores only a large number of CDs, the information of the booklet is printed on the first print layer of the CD even if the booklet is not present. By doing so, it has the effect of being able to know immediately.

[Brief description of the drawings]

FIG. 1 is an enlarged partial cross-sectional view of an optical information recording medium according to an embodiment of the present invention, showing a cross section taken along line AA of FIG. 2;

FIG. 2 is a plan view showing the optical information recording medium according to the embodiment of the present invention as viewed from the printing surface side.

FIG. 3 is a bottom view showing the optical information recording medium according to the embodiment of the present invention as viewed from the data surface side.

FIG. 4 is a plan view illustrating a state of the optical information recording medium viewed from the printing surface side in the embodiment of the present invention.

FIG. 5 is an enlarged partial cross-sectional view of the optical information recording medium according to the embodiment of the present invention, showing a cross section taken along line BB of FIG. 5;

FIG. 6 is a bottom view showing a state of the optical information recording medium as viewed from the data surface side in the embodiment of the present invention.

FIG. 7 is an enlarged partial cross-sectional view of a conventional optical information recording medium.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical information recording medium main body (CD main body) 3 Substrate 5 Hole 7 Data recording part 9 1st printing layer 11 Protective layer 13 2nd printing layer

Claims (1)

[Claims] 1. An optical information recording medium characterized by the following requirements: (a) a substrate, a data recording portion provided on the substrate, and a printing layer formed on the surface of the substrate; (B) The substrate is formed of a transparent material into a thin disk shape having a hole at the center. (C) The data recording section is provided in an area having a diameter smaller than the maximum diameter of the substrate and has optically readable digital data. Is possible. (D) The print layer is composed of a print section for the data side and a print section for the front side. (E) In the printing section for the data surface, visual information of contents recognizable from the data surface side is posted in an area other than the portion where the data recording section is provided. (F) The printed part for the front side shall contain visual information of the content that can be recognized from the front side.