JPH0556572B2 - - Google Patents

Info

Publication number
JPH0556572B2
JPH0556572B2 JP59122368A JP12236884A JPH0556572B2 JP H0556572 B2 JPH0556572 B2 JP H0556572B2 JP 59122368 A JP59122368 A JP 59122368A JP 12236884 A JP12236884 A JP 12236884A JP H0556572 B2 JPH0556572 B2 JP H0556572B2
Authority
JP
Japan
Prior art keywords
optical
recording surface
amount
optical disk
runout
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
Application number
JP59122368A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61946A (ja
Inventor
Seiji Nishiwaki
Yoshikazu Goto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59122368A priority Critical patent/JPS61946A/ja
Publication of JPS61946A publication Critical patent/JPS61946A/ja
Publication of JPH0556572B2 publication Critical patent/JPH0556572B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/10—Indicating arrangements; Warning arrangements
    • 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
    • G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
    • 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
    • G11B17/34—Guiding record carriers during transducing operation, e.g. for track following
    • 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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Optical Record Carriers (AREA)
JP59122368A 1984-06-14 1984-06-14 光デイスク評価装置 Granted JPS61946A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59122368A JPS61946A (ja) 1984-06-14 1984-06-14 光デイスク評価装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59122368A JPS61946A (ja) 1984-06-14 1984-06-14 光デイスク評価装置

Publications (2)

Publication Number Publication Date
JPS61946A JPS61946A (ja) 1986-01-06
JPH0556572B2 true JPH0556572B2 (enrdf_load_stackoverflow) 1993-08-19

Family

ID=14834130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59122368A Granted JPS61946A (ja) 1984-06-14 1984-06-14 光デイスク評価装置

Country Status (1)

Country Link
JP (1) JPS61946A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0721508B2 (ja) * 1987-04-06 1995-03-08 横河電機株式会社 光デイスク検査装置の加速度計算方法
KR100813946B1 (ko) * 2001-09-01 2008-03-14 삼성전자주식회사 광정보저장매체의 기록 및 재생장치, 편향크기 산출 방법, 재생 시스템, 기록 및 재생 시스템

Also Published As

Publication number Publication date
JPS61946A (ja) 1986-01-06

Similar Documents

Publication Publication Date Title
US5978091A (en) Laser-bump sensor method and apparatus
US4504939A (en) Storage medium track pitch detector
JP4258058B2 (ja) 円盤状記録媒体の検査装置及び検査方法
US4759007A (en) Storage medium track pitch detector
JPS6347606A (ja) 非球面形状測定装置
US5155372A (en) Optical inspection system utilizing wedge shaped spatial filter
US5805284A (en) Optically verified glide
JPH0556572B2 (enrdf_load_stackoverflow)
US4566090A (en) Storage medium track pitch detector
JPH10500524A (ja) 光学フォーカシング調整デバイス
JP2002503801A (ja) 記録ヘッドの浮上量を決定する方法と装置
JP2671437B2 (ja) トラックピッチむらの測定方法
US5784348A (en) Phase detected direct read during write
JP2653105B2 (ja) ウォーブリングトラックの測定方法
JPS58147824A (ja) デイスク検査装置
JP2869589B2 (ja) 光磁気信号を用いた集光ビ−ム径測定方法及びそれを利用した光ディスク装置の光学系検査方法
JPH09166427A (ja) 円盤状記録媒体の検査装置及び検査方法
JPH05342676A (ja) 光磁気ディスク検査装置
JPS60210733A (ja) レンズ光軸検査装置
JP2663466B2 (ja) 光ディスクの検査方法
JPS60258739A (ja) フオ−カシング誤差検出装置
JPS62147340A (ja) 光学ヘツド検査装置
JPS58122410A (ja) 表面形状測定方法
JPH05332879A (ja) 光学ヘッドの光スポット径測定方法
JPH06307839A (ja) 光触針利用による表面測定方法および装置