CN2054931U - 带有环状突出部分的激光唱盘 - Google Patents
带有环状突出部分的激光唱盘 Download PDFInfo
- Publication number
- CN2054931U CN2054931U CN89213609U CN89213609U CN2054931U CN 2054931 U CN2054931 U CN 2054931U CN 89213609 U CN89213609 U CN 89213609U CN 89213609 U CN89213609 U CN 89213609U CN 2054931 U CN2054931 U CN 2054931U
- Authority
- CN
- China
- Prior art keywords
- signal
- disc
- record
- substrate
- disc record
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000758 substrate Substances 0.000 claims description 36
- 125000004122 cyclic group Chemical group 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 229920005668 polycarbonate resin Polymers 0.000 description 4
- 239000004431 polycarbonate resin Substances 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
- G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR880011170 | 1988-07-09 | ||
KK11170 | 1988-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2054931U true CN2054931U (zh) | 1990-03-21 |
Family
ID=31492730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN89213609U Expired - Lifetime CN2054931U (zh) | 1988-07-09 | 1989-07-05 | 带有环状突出部分的激光唱盘 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPH0212770U (de) |
CN (1) | CN2054931U (de) |
DE (1) | DE8815125U1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5060292U (de) * | 1973-10-01 | 1975-06-03 | ||
US5453975A (en) * | 1991-12-16 | 1995-09-26 | Sharp Kabushiki Kaisha | Optical disc with surface coating and manufacturing method therefor |
JP2768862B2 (ja) * | 1991-12-16 | 1998-06-25 | シャープ株式会社 | 光ディスクおよびその表面処理方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5344724Y2 (de) * | 1973-06-18 | 1978-10-26 | ||
JPS5720123A (en) * | 1980-07-10 | 1982-02-02 | Meidensha Electric Mfg Co Ltd | Distance relay |
-
1988
- 1988-12-05 DE DE8815125U patent/DE8815125U1/de not_active Expired
-
1989
- 1989-01-13 JP JP1989003455U patent/JPH0212770U/ja active Pending
- 1989-07-05 CN CN89213609U patent/CN2054931U/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0212770U (de) | 1990-01-26 |
DE8815125U1 (de) | 1989-01-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
RN01 | Renewal of patent term | ||
C17 | Cessation of patent right | ||
CX01 | Expiry of patent term |