JPS6427049A - Optical disk, substrate for optical disk and its production - Google Patents

Optical disk, substrate for optical disk and its production

Info

Publication number
JPS6427049A
JPS6427049A JP63060552A JP6055288A JPS6427049A JP S6427049 A JPS6427049 A JP S6427049A JP 63060552 A JP63060552 A JP 63060552A JP 6055288 A JP6055288 A JP 6055288A JP S6427049 A JPS6427049 A JP S6427049A
Authority
JP
Japan
Prior art keywords
parts
substrate
optical
optical disk
refractive index
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.)
Granted
Application number
JP63060552A
Other languages
Japanese (ja)
Other versions
JP2788245B2 (en
Inventor
Yoshinori Miyamura
Shinkichi Horigome
Norio Ota
Fumiyoshi Kirino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP63060552A priority Critical patent/JP2788245B2/en
Publication of JPS6427049A publication Critical patent/JPS6427049A/en
Application granted granted Critical
Publication of JP2788245B2 publication Critical patent/JP2788245B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Manufacturing Optical Record Carriers (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To obtain a substrate which has a high memory density and is suitable for mass production by varying the optical constant in the guide parts of bit parts for information recording of the substrate from the optical constant in other parts and positioning projection light is accordance with the difference in the optical constants. CONSTITUTION:A photoresist layer 2 is coated on the substrate 1 and after groove patterns and bit patterns are formed thereon, Pb<2+> ions 4 are projected thereto to form ion implanted parts 5. Since the ion implanted parts 5 are provided with the refractive index higher than the refractive index in the other parts, tracking can be taken by the difference therebetween. The substrate formed by this method has good characteristics as optical disks of both a magneto-optical type and phase change type and is suitable for mass production.
JP63060552A 1987-04-22 1988-03-16 Optical disc, optical disc substrate, and method of manufacturing the same Expired - Lifetime JP2788245B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63060552A JP2788245B2 (en) 1987-04-22 1988-03-16 Optical disc, optical disc substrate, and method of manufacturing the same

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62-97311 1987-04-22
JP9731187 1987-04-22
JP63060552A JP2788245B2 (en) 1987-04-22 1988-03-16 Optical disc, optical disc substrate, and method of manufacturing the same

Publications (2)

Publication Number Publication Date
JPS6427049A true JPS6427049A (en) 1989-01-30
JP2788245B2 JP2788245B2 (en) 1998-08-20

Family

ID=26401621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63060552A Expired - Lifetime JP2788245B2 (en) 1987-04-22 1988-03-16 Optical disc, optical disc substrate, and method of manufacturing the same

Country Status (1)

Country Link
JP (1) JP2788245B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0337840A (en) * 1989-07-05 1991-02-19 Brother Ind Ltd Phase change type optical disk
JPH0337841A (en) * 1989-07-05 1991-02-19 Brother Ind Ltd Optical disk
JPH0378131A (en) * 1989-08-18 1991-04-03 Brother Ind Ltd Optical recording medium
JPH0536117A (en) * 1991-07-29 1993-02-12 Nec Corp Optical disk and production thereof
US5249175A (en) * 1988-09-09 1993-09-28 Matsushita Electric Industrial Co., Ltd. Optical information recording medium and information recording and reproducing method therefor
JPH0714212A (en) * 1993-06-28 1995-01-17 Nec Corp Optical disk substrate and its manufacture
JP2004127391A (en) * 2002-09-30 2004-04-22 Toshiba Corp Optical recording medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968848A (en) * 1982-10-09 1984-04-18 Nippon Telegr & Teleph Corp <Ntt> Optical disc medium
JPS59203255A (en) * 1983-05-04 1984-11-17 Nippon Telegr & Teleph Corp <Ntt> Optical disc medium
JPS62200545A (en) * 1986-02-27 1987-09-04 Ricoh Co Ltd Optical recording medium and its production
JPS62243142A (en) * 1986-04-16 1987-10-23 Mitsubishi Electric Corp Information recording medium, information recording device and information reader

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968848A (en) * 1982-10-09 1984-04-18 Nippon Telegr & Teleph Corp <Ntt> Optical disc medium
JPS59203255A (en) * 1983-05-04 1984-11-17 Nippon Telegr & Teleph Corp <Ntt> Optical disc medium
JPS62200545A (en) * 1986-02-27 1987-09-04 Ricoh Co Ltd Optical recording medium and its production
JPS62243142A (en) * 1986-04-16 1987-10-23 Mitsubishi Electric Corp Information recording medium, information recording device and information reader

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5249175A (en) * 1988-09-09 1993-09-28 Matsushita Electric Industrial Co., Ltd. Optical information recording medium and information recording and reproducing method therefor
JPH0337840A (en) * 1989-07-05 1991-02-19 Brother Ind Ltd Phase change type optical disk
JPH0337841A (en) * 1989-07-05 1991-02-19 Brother Ind Ltd Optical disk
JPH0378131A (en) * 1989-08-18 1991-04-03 Brother Ind Ltd Optical recording medium
JPH0536117A (en) * 1991-07-29 1993-02-12 Nec Corp Optical disk and production thereof
JPH0714212A (en) * 1993-06-28 1995-01-17 Nec Corp Optical disk substrate and its manufacture
JP2004127391A (en) * 2002-09-30 2004-04-22 Toshiba Corp Optical recording medium

Also Published As

Publication number Publication date
JP2788245B2 (en) 1998-08-20

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