JPH0566247B2 - - Google Patents
Info
- Publication number
- JPH0566247B2 JPH0566247B2 JP60281202A JP28120285A JPH0566247B2 JP H0566247 B2 JPH0566247 B2 JP H0566247B2 JP 60281202 A JP60281202 A JP 60281202A JP 28120285 A JP28120285 A JP 28120285A JP H0566247 B2 JPH0566247 B2 JP H0566247B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- less
- mirror
- polycarbonate
- birefringence
- 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
- 239000004417 polycarbonate Substances 0.000 claims description 26
- 239000000758 substrate Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 13
- 229920000515 polycarbonate Polymers 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229920005668 polycarbonate resin Polymers 0.000 claims description 3
- 239000004431 polycarbonate resin Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacturing Optical Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60281202A JPS62140817A (ja) | 1985-12-16 | 1985-12-16 | 光デイスク基板用ポリカ−ボネ−トシ−トの製法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60281202A JPS62140817A (ja) | 1985-12-16 | 1985-12-16 | 光デイスク基板用ポリカ−ボネ−トシ−トの製法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62140817A JPS62140817A (ja) | 1987-06-24 |
| JPH0566247B2 true JPH0566247B2 (enExample) | 1993-09-21 |
Family
ID=17635771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60281202A Granted JPS62140817A (ja) | 1985-12-16 | 1985-12-16 | 光デイスク基板用ポリカ−ボネ−トシ−トの製法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62140817A (enExample) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2506784B2 (ja) * | 1987-07-01 | 1996-06-12 | 松下電器産業株式会社 | カ−ド状光記録媒体 |
| US5075060A (en) * | 1988-11-16 | 1991-12-24 | Canon Kabushiki Kaisha | Process for producing a substrate sheet for an optical recording medium |
| DE4018530A1 (de) * | 1990-06-09 | 1991-12-12 | Roehm Gmbh | Verfahren zur herstellung von geglaetteten extrudierten vollplatten oder folien aus thermoplastischem kunststoff |
| JP2932731B2 (ja) * | 1991-03-01 | 1999-08-09 | 宇部興産株式会社 | ポリカーボネート単層シートの製造方法 |
| DE69218555T2 (de) * | 1991-11-28 | 1997-08-21 | Canon Kk | Vorrichtung und Verfahren zur Herstellung eines Substrates für Informationsträger |
| JPH07126375A (ja) * | 1993-11-04 | 1995-05-16 | Teijin Chem Ltd | 光学用ポリカーボネート樹脂シート |
| DE19836800A1 (de) * | 1998-08-14 | 2000-02-17 | Roehm Gmbh | Optisch isotrope Polycarbonat-Folien sowie Verfahren zu deren Herstellung |
| JP2003082131A (ja) * | 2001-09-12 | 2003-03-19 | Keiwa Inc | ポリカーボネートシート、光学シート及び非晶質ポリマーシートの製造方法 |
-
1985
- 1985-12-16 JP JP60281202A patent/JPS62140817A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62140817A (ja) | 1987-06-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |