CN2553482Y

CN2553482Y - Wear-resistant optical disk

Info

Publication number: CN2553482Y
Application number: CN02238781U
Authority: CN
Inventors: 许嘉文; 邱丽娟; 李静观
Original assignee: Daxon Technology Inc
Current assignee: BenQ Materials Corp
Priority date: 2002-06-18
Filing date: 2002-06-18
Publication date: 2003-05-28
Anticipated expiration: 2012-06-18

Abstract

The utility model provides a wear-resistant optical disk, comprising a disk body and a plurality of protrusions arranged on the edges of reading and writing surface. Using the protrusions which are symmetrically arranged to avoid the wear of the reading and writing surface for the optical disk.

Description

The discs of resistance to wearing

Technical field

The utility model relates to a kind of discs, particularly relates to a kind of discs that the symmetry projection is provided with that has at CD read and write face edge.

Background technology

Recently the capacity of program is increasing, so mostly will be with CD (CD) or digital video video disc (Digital Video Disc, DVD) version is issued, and the consumer also more and more gets used to utilizing the video-audio data of disc storage numeral, or carries out data backup.Basically, the manufacturing of discs roughly is divided into five steps: the data processing before cutting blocks for printing, cut blocks for printing, electroforming, injection moulding (ejaculation) moulding and plated film, cloth glue and printing.

Figure 1A is the top view of existing discs, Figure 1B is the cut-open view of a-a among Figure 1A, existing discs 10 is a plastic disc with injection mo(u)lding, have a upper surface and a read/write surface for read, its upper surface can supply plated film, cloth glue and printing, 13 of read/write surface for read have the data recording district 131 of a ring-type, and these 131 inside, data recording district have a data recording floor 14 that is used to note down numerical data in discs 10; Central authorities in discs 10 have a center through hole 11, and the inner edge place near data recording district 132 on the read/write surface for read 13 of discs 10 is formed with an annular projection 12 in response to manufacturing process, be used to avoid when multi-disk optical disk sheet 10 sticking mutually glutinous during at storehouse.

Shown in Figure 1A and Figure 1B, though on the read/write surface for read 13 of discs 10, have the thick annular projection 12 of about a 1～2mm of circle, when the mutual storehouse of multi-disk optical disk sheet 10, read/write surface for read 13 is in contact with one another with the upper surface of other a slice discs, though the peripheral part near annular projection 12 can not contact with the upper surface of another discs, but the data recorded area of discs 10 but can contact with the upper surface of another discs because of plastic yield, so the data recorded area 14 of discs 10 is easy to wear and tear and CD-ROM drive is read less than the data that were stored in originally in the discs 10, cause data to run off, this can cause very big puzzlement to the user.

The utility model content

The purpose of this utility model is to provide a kind of wear-resistant discs, can not read to be stored in inner data because of wearing and tearing with the lucifuge disc, causes user's loss.

The purpose of this utility model is achieved in that promptly provides a kind of discs of resistance to wearing, and comprising: a disc body which is provided with a reading face and a center through hole; And a plurality of projectioies, be arranged on this reading face of this disc body outer rim.

Projection described in the utility model is circular, and is to be arranged on the read/write surface for read edge of discs with the ring-type symmetrical manner.

In a preferred embodiment, this disc body is made with injection mo(u)lding.

Again, above-mentioned projection is shaped as circle.

In a preferred embodiment, above-mentioned disc body has a data recording district, is arranged at center through hole to this disc body edges institute area surrounded, is used to note down data.

Again, above-mentioned discs is CD-ROM, writes dispensable mould CD or re-writeable CD.

Again, above-mentioned discs is digital versatile disc-ROM, writes dispensable mould DVD or re-writeable DVD.

Advantage of the present utility model is that its discs with circular protrusions more can be protected its read/write surface for read than traditional discs, is not subjected to lateral wearing, so can guarantee the safety of data.

Description of drawings

Figure 1A is the top view of existing discs;

Figure 1B is the cut-open view of a-a among Figure 1A;

Fig. 2 A is the top view of discs of the present utility model;

Fig. 2 B is the cut-open view of b-b among Fig. 2 A.

Embodiment

See also Fig. 2 A and Fig. 2 B, Fig. 2 A is the top view of discs of the present utility model, and Fig. 2 B is the cut-open view of b-b among Fig. 2 A.The material of the discs 20 of resistance to wearing of the present utility model is engineering plastics, as Acrylic, PC (PolyCarbonate) or ABS, its mode with injection mo(u)lding is made, read/write surface for read 25 in discs 20 has a data recording district 241, general CD-ROM drive can read the data that are stored in internal data record layer 24 by laser by the data recording district 241 on the read/write surface for read 25.

Shown in Fig. 2 A and Fig. 2 B, central authorities in discs 20 have a center through hole 21 that supplies the CD-ROM drive rotating shaft to pass, on the read/write surface for read 25 of discs 20, center through hole 21 outsides have an annular projection 22, one data recording district 241 is around the outside of the annular projection 22 that is arranged at discs 20, outer rim and discs 20 edges in data recording district 241 form an annular region 26, the width of this annular region is d, and the scope of d is about between 1～2mm; In order not influence the running of CD-ROM drive read head, 20 of discs of the present utility model are provided with the circular protrusions 23 of several diameters less than 2mm in this annular region 26, the height of above-mentioned circular protrusions 23 is 0.1～0.2mm, by above-mentioned circular protrusions 23 data recorded area of discs 20 and marginal portion can be bent downwardly because of plastic yield, thereby avoid the data recorded area of discs 20 and the wearing and tearing of outer rim, can't read or write data and cause.Above-mentioned circular protrusions 23 also can other geometric configuration projection, as: square boss, or the edge of overall optical disc forms an annular protrusion in addition by read/write surface for read, also can make the outer rim of discs more not easy to wear, above-mentioned projection also can symmetrical manner be arranged at discs 20 around.

In order to test the antiwear property of discs 20 of the present utility model, then simply grind on No. 200 waterproof abrasive paper with the discs 20 that the utlity model has circular protrusions 23 with the discs of 20 no circular protrusions of tradition, each is through after 3 minutes, whether may be read into the archives that are stored on the discs, its test result such as following table with the CD-ROM drive test again:

	Bad sheet	Damage rate
	Bad sheet	Damage rate	The conventional optical disc sheet	15/20	75％
The discs of tool circular protrusions	3/20	6％	The conventional optical disc sheet	15/20	75％

As seen from the above table, the discs 20 that the utlity model has circular protrusions more can be protected its read/write surface for read 25 than traditional discs, is not subjected to lateral wearing, so can guarantee the safety of data.

In addition, above-mentioned discs 20 with raised points goes for CD-ROM (CD-ROM), writes dispensable mould CD (CD-R) or re-writeable CD (CD-RW).The digital video video disc is fitted by two identical substrates to form, and in the edge annular region of the reading face of two plate bases of this bonding several raised points is set also, and makes the digital video video disc also more not easy to wear; So structure of the present utility model also applicable to read-only type digital video video disc (DVD-ROM), write dispensable mould digital video video disc (DVD-R) or re-writeable digital video video disc (DVD-RW), and make DVD more not easy to wear.

Claims

1. the discs of resistance to wearing is characterized in that, comprising: a disc body which is provided with a reading face and a center through hole; And a plurality of projectioies, be arranged on this reading face of this disc body outer rim.

2. the discs of resistance to wearing as claimed in claim 1 is characterized in that, this each projection is arranged at this edge of first with symmetrical manner.

3. the discs of resistance to wearing as claimed in claim 1 is characterized in that, this disc body is injection mo(u)lding.

4. the discs of resistance to wearing as claimed in claim 1 is characterized in that, this each projection be shaped as geometric configuration.

5 discs of resistance to wearing as claimed in claim 1 is characterized in that, also comprise: a data recording district is arranged at that this center through hole is used to note down data in the reading face of this disc body to this disc body edges institute area surrounded.

6. the discs of resistance to wearing as claimed in claim 1 is characterized in that, this discs is CD-ROM (CD-ROM), write dispensable mould CD (CD-R) or re-writeable CD (CD-RW).

7. the discs of resistance to wearing as claimed in claim 1 is characterized in that, this discs is read-only type digital video video disc (DVD-ROM), write dispensable mould digital video video disc (DVD-R) or re-writeable digital video video disc (DVD-RAM).