JPS6482332A - Slide testing device for magnetic disk - Google Patents

Slide testing device for magnetic disk

Info

Publication number
JPS6482332A
JPS6482332A JP23949287A JP23949287A JPS6482332A JP S6482332 A JPS6482332 A JP S6482332A JP 23949287 A JP23949287 A JP 23949287A JP 23949287 A JP23949287 A JP 23949287A JP S6482332 A JPS6482332 A JP S6482332A
Authority
JP
Japan
Prior art keywords
wear
light
vibration
testing device
magnetic disk
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.)
Pending
Application number
JP23949287A
Other languages
Japanese (ja)
Inventor
Nobuhiro Umebayashi
Yoshito Tanaka
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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 Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP23949287A priority Critical patent/JPS6482332A/en
Publication of JPS6482332A publication Critical patent/JPS6482332A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To facilitate the analysis of the wear and to improve the wear resistance by observing and recording vibration on the surface of a magnetic disk of a magnetic heat by the reflection of a light and a two-dimensional position sensor. CONSTITUTION:A magnetic head generates a fine vibration which is extremely small and cannot be observed easily, therefore, it is impossible to decide it directly by a visual observation, and the light 8 and the photosensor 9 are utilized so that the vibration can be amplified, and also, quantified. Concretely, to the magnetic head, a reflecting mirror 5 is stuck, a luminous flux 8 is projected to its mirror 5 from the outside and reflected, and its reflected light is photodetected by a two-dimensional position sensor 9, and the light receiving position is converted to an electric output and displayed on an oscilloscope 12. In such a way, a slide testing device which can detect easily the first stage of the wear and analyze the wear mechanism can be obtained.
JP23949287A 1987-09-24 1987-09-24 Slide testing device for magnetic disk Pending JPS6482332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23949287A JPS6482332A (en) 1987-09-24 1987-09-24 Slide testing device for magnetic disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23949287A JPS6482332A (en) 1987-09-24 1987-09-24 Slide testing device for magnetic disk

Publications (1)

Publication Number Publication Date
JPS6482332A true JPS6482332A (en) 1989-03-28

Family

ID=17045580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23949287A Pending JPS6482332A (en) 1987-09-24 1987-09-24 Slide testing device for magnetic disk

Country Status (1)

Country Link
JP (1) JPS6482332A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5851321A (en) * 1995-01-13 1998-12-22 The Yokohama Rubber Co., Ltd. Pneumatic tire including cap tread portion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5851321A (en) * 1995-01-13 1998-12-22 The Yokohama Rubber Co., Ltd. Pneumatic tire including cap tread portion

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