JPH0434215B2 - - Google Patents
Info
- Publication number
- JPH0434215B2 JPH0434215B2 JP62256441A JP25644187A JPH0434215B2 JP H0434215 B2 JPH0434215 B2 JP H0434215B2 JP 62256441 A JP62256441 A JP 62256441A JP 25644187 A JP25644187 A JP 25644187A JP H0434215 B2 JPH0434215 B2 JP H0434215B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- disk
- reflective
- polymethyl methacrylate
- injection molding
- 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
- 230000003287 optical effect Effects 0.000 claims description 47
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 37
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 37
- 238000001746 injection moulding Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 14
- 238000000149 argon plasma sintering Methods 0.000 description 12
- 239000000155 melt Substances 0.000 description 11
- 239000010410 layer Substances 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 239000004033 plastic Substances 0.000 description 6
- 239000011241 protective layer Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 229920000800 acrylic rubber Polymers 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical class [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 240000001549 Ipomoea eriocarpa Species 0.000 description 1
- 235000005146 Ipomoea eriocarpa Nutrition 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5218372A JPH0782661B2 (ja) | 1978-08-28 | 1993-09-02 | ポリメチルメタクリレートからなる光学的情報貯蔵部材 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US937221 | 1978-08-28 | ||
| US3120679A | 1979-04-18 | 1979-04-18 | |
| US031206 | 1979-04-18 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5218372A Division JPH0782661B2 (ja) | 1978-08-28 | 1993-09-02 | ポリメチルメタクリレートからなる光学的情報貯蔵部材 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63183949A JPS63183949A (ja) | 1988-07-29 |
| JPH0434215B2 true JPH0434215B2 (fr) | 1992-06-05 |
Family
ID=21858176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62256441A Granted JPS63183949A (ja) | 1978-08-28 | 1987-10-13 | ポリメチルメタクリレート材料 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63183949A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2728695B2 (ja) * | 1988-10-15 | 1998-03-18 | 株式会社クラレ | メタクリル系樹脂組成物 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5013441A (fr) * | 1973-06-07 | 1975-02-12 | ||
| JPS5068102A (fr) * | 1973-10-15 | 1975-06-07 | ||
| JPS5236003A (en) * | 1975-09-12 | 1977-03-19 | Hoechst Ag | Synthetic resin sheet for producing videooaudiooinformation carrier |
| US4185955A (en) * | 1977-10-31 | 1980-01-29 | Mca Disco-Vision, Inc. | Apparatus for replicating centrally apertured video disc records |
| JPS5532298A (en) * | 1978-08-28 | 1980-03-06 | Mca Disco Vision | Producing video disk structure |
| JPS5538655A (en) * | 1978-09-08 | 1980-03-18 | Sumitomo Chem Co Ltd | Optical signal recording and reproducing member |
-
1987
- 1987-10-13 JP JP62256441A patent/JPS63183949A/ja active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5013441A (fr) * | 1973-06-07 | 1975-02-12 | ||
| JPS5068102A (fr) * | 1973-10-15 | 1975-06-07 | ||
| JPS5236003A (en) * | 1975-09-12 | 1977-03-19 | Hoechst Ag | Synthetic resin sheet for producing videooaudiooinformation carrier |
| US4185955A (en) * | 1977-10-31 | 1980-01-29 | Mca Disco-Vision, Inc. | Apparatus for replicating centrally apertured video disc records |
| JPS5532298A (en) * | 1978-08-28 | 1980-03-06 | Mca Disco Vision | Producing video disk structure |
| JPS5538655A (en) * | 1978-09-08 | 1980-03-18 | Sumitomo Chem Co Ltd | Optical signal recording and reproducing member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63183949A (ja) | 1988-07-29 |
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