CN1512494A

CN1512494A - Anti-wear and scratch optical disc

Info

Publication number: CN1512494A
Application number: CNA021596786A
Authority: CN
Inventors: 林世丹; 江雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-30
Filing date: 2002-12-30
Publication date: 2004-07-14

Abstract

The present invention belongs to the field of record carrier, and is especially wear and scratch preventing optical disc for optical recording and playing back. On the data surface of optical disc, there is spiral lugs set around the center of the optical disc and between spiral tracks and/or outside the data area. The area outside the data area for the lugs to be set may be transparent inner ring area B, circular high processes area C, circular stacked area D and/or outer ring area F, and the lugs may be continuous or intermittent. The lugs higher than the spiral data tracks can protect optical disc effectively against scratch and damage.

Description

Abrasionproof undermines the CD of scuffing

Technical field

The invention belongs to the record carrier field, be meant that especially the abrasionproof of using up method record and reappearing record undermines the CD of scuffing.

Background technology

CD is to handle with the laser beam that focuses on to store or the medium of regenerating information, is a kind of information recording medium of novelty, is the ideal medium that is used for various information such as stored sound, image, photo, data, literal now.

The kind of CD is a lot, comprises music CD CD, read-only disc CD-ROM, laser video CD VCD, Mini Disk MD and digital versatile CD DVD or the like.Traditional compact disk structure mainly is made up of for three layers dish base, recording layer and protective layer, and wherein, the dish base is by material such as organic glass or vibrin; Recording layer is the composite material film of tellurium alloy, covers the surface of dish base; Protective layer is made up of materials such as plastics or organic glass, in order to canned data on the protection recording layer.

As shown in Figure 1, the external structure of conventional optical disc is the same substantially, and diameter is 80mm or 120mm, and thickness is 1.2mm, is divided into printing surface and data surface.On the optical disc data face, be respectively that diameter is that the hollow center hole A width of 15mm is the transparent circular Nei Huan district B of 2mm from the inside to surface; Width is the transparent circular higher-pressure region C of 7mm; Width is the transparent circular stack layer district D of 1mm; Width is the circular data district E of 40.5mm; Outermost layer is that width is the transparent circular outer zone F of 1.5mm, wherein, the helical trajectory road of stable headway is arranged on the surface of video disc recording layer, on the track imprinting a large amount of information, the part that is carved with information is called the data field, the spacing between the helix is 1.6 μ m.The printing surface of CD is the same substantially with the data surface structure, only stack layer is become only glue groove, and data surface has become printing surface.

Though the protection of the recording layer matcoveredn in data of optical disk district in use, because use is improper, does not notice during as the placement CD that the one side that often CD is carved with information is placed on the desk, so in the course of time, the optical disc data district will be damaged; Or the data field causes CD to use by hard thing scuffing etc., give CD everyone bring massive losses.

Summary of the invention

The purpose of this invention is to provide the CD that a kind of abrasionproof undermines scuffing, scratched or be damaged by hard thing to avoid the optical disc data district.

Abrasionproof of the present invention undermines the CD of scuffing, it is characterized in that: on the data of optical disk face, be provided with protruded object, described protruded object is that the hollow center hole A with CD is the center of circle, and spiral is arranged between the helical trajectory road of data recordng information and/or on the card beyond the data field of data of optical disk face.

Described protruded object is that the hollow center hole A with CD is that the center of circle is provided with continuously or at interval.

When described protruded object is arranged between the helical trajectory road, the helical trajectory road of or one or more recorded information can be arranged between protruded object and the protruded object; How much not limiting of the helical trajectory road of the recorded information between two protruded objects can be determined according to the effect of manufacturer and use.

Described protruded object is arranged in any one or the more than one district that is meant beyond the data of optical disk district among transparent circular Nei Huan district B, circular higher-pressure region C, circular stack layer district D, the circular outer zone F.

Described protruded object is solid or hollow; The shape of described protruded object is geometric configuratioies such as triangle, semicircle, platform shape, annular, ellipse, cylindricality, rectangle or angle vertebra shape.

The height of described protruded object only need be higher than the data spiral track road of recorded information, is preferable with 100 μ m～2000 μ m generally.Described protruded object can be the same with the material of CD, as materials such as organic glass or vibrin.When at interval protruded object being set, the number of protruded object is not particularly limited, and protruded object can or be bonded in the data field blank space in addition that has the data of optical disk face now with CD one die cast.

The present invention because in the data field of data surface and/or the data field being outside equipped with protruded object, and protruded object is higher than the data spiral track road of recorded information, so, prevented that in use data spiral track road is scratched damaged compact disk.

Description of drawings

Fig. 1. the schematic top plan view of conventional optical disc structure.

Fig. 2. the CD schematic top plan view of the embodiment of the invention 1.

Fig. 3. the CD schematic top plan view of the embodiment of the invention 2.

Fig. 4. the CD schematic top plan view of the embodiment of the invention 3.

Fig. 5. the CD schematic top plan view of the embodiment of the invention 4.

Reference numeral

1. protruded object 2. helical trajectory roads

A. C. higher-pressure region, the circular Nei Huan district of center pit B.

D. E. data field, stack layer district F. outer zone

Embodiment

Embodiment 1.

As shown in Figure 2.The dish base is the machine glass material; Recording layer is the composite material film of tellurium alloy, covers the surface of dish base; Protective layer is a pmma material, and according to traditional method for making CD, one die cast one has the CD of protruded object on the data of optical disk face.In the optical disc data district, its rectangle protruded object is that the hollow center hole A with CD is the center of circle, and continuous helical is arranged between the helical trajectory road of data recordng information; 3 angle vertebra shape protruded objects are arranged among the circular outer zone F of CD, and this protruded object is to be made by pmma material, highly are 100 μ m.

Embodiment 2.

As shown in Figure 3, the dish base is a material in polyester resin; Recording layer is the composite material film of tellurium alloy, covers the surface of dish base; Protective layer is a plastic material, and according to traditional method for making CD, one die cast one has the CD of protruded object on the data of optical disk face.In the optical disc data district, its semicircle protruded object is that the hollow center hole A with CD is the center of circle, is disposed between the helical trajectory road of data recordng information, and the helical trajectory road of 5 recorded informations is arranged between protruded object and the protruded object.Protruded object further is arranged on the circular outer zone F of CD simultaneously.This protruded object is to be made by material in polyester resin, highly is 2000 μ m.

Embodiment 3.

As shown in Figure 4, the dish base is a material in polyester resin; Recording layer is the composite material film of tellurium alloy, covers the surface of dish base; Protective layer is a plastic material, and according to traditional method for making CD, one die cast one has the CD of protruded object on the data of optical disk face.Described cylindrical convex thing is separately positioned among the circular Nei Huan district B and circular outer zone F of CD.This protruded object is to be made by material in polyester resin, highly is 1000 μ m.

Embodiment 4.

As shown in Figure 5.The dish base is the machine glass material; Recording layer is the composite material film of tellurium alloy, covers the surface of dish base; Protective layer is a pmma material, and according to traditional method for making CD, one die cast one has the CD of protruded object on the data of optical disk face.In the optical disc data district, its rectangle protruded object is that the hollow center hole A with CD is the center of circle, and continuous helical is arranged between the helical trajectory road of data recordng information, and this protruded object is to be made by pmma material, highly is 1500 μ m.

Claims

1. an abrasionproof undermines the CD of scuffing, it is characterized in that: on the data of optical disk face, be provided with protruded object, described protruded object is that the hollow center hole A with CD is the center of circle, and spiral is arranged between the helical trajectory road of data recordng information and/or on the card beyond the data field of data of optical disk face.

2. CD as claimed in claim 1 is characterized in that: described protruded object is arranged in any one or the more than one district that is meant beyond the data of optical disk district among transparent circular Nei Huan district B, circular higher-pressure region C, circular stack layer district D, the circular outer zone F.

3. CD as claimed in claim 1 or 2 is characterized in that: described protruded object is that the hollow center hole A with CD is that the center of circle is provided with continuously or at interval.

4. CD as claimed in claim 1 or 2 is characterized in that: described protruded object is solid or hollow; The shape of described protruded object is triangle, semicircle, platform shape, annular, ellipse, cylindricality, rectangle or angle vertebra shape.

5. CD as claimed in claim 3 is characterized in that: described protruded object is solid or hollow; The shape of described protruded object is triangle, semicircle, platform shape, annular, ellipse, cylindricality, rectangle or angle vertebra shape.

6. as claim 1,2 or 5 described CDs, it is characterized in that: the height of described protruded object is 100 μ m～2000 μ m.

7. CD as claimed in claim 3 is characterized in that: the height of described protruded object is 100 μ m～2000 μ m.

8. CD as claimed in claim 4 is characterized in that: the height of described protruded object is 100 μ m～2000 μ m.