JPS6423178A - Inspecting method for magnetic disk medium - Google Patents

Inspecting method for magnetic disk medium

Info

Publication number
JPS6423178A
JPS6423178A JP17889787A JP17889787A JPS6423178A JP S6423178 A JPS6423178 A JP S6423178A JP 17889787 A JP17889787 A JP 17889787A JP 17889787 A JP17889787 A JP 17889787A JP S6423178 A JPS6423178 A JP S6423178A
Authority
JP
Japan
Prior art keywords
head
medium
recording
magnetic head
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
JP17889787A
Other languages
Japanese (ja)
Inventor
Yuichi Otani
Tamotsu Sasaki
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 JP17889787A priority Critical patent/JPS6423178A/en
Publication of JPS6423178A publication Critical patent/JPS6423178A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

PURPOSE:To obtain an inspecting method capable of discriminating a defect shape by inspecting the recording/reproduction defect of a magnetic disk medium by a 1st magnetic head and a 2nd magnetic head which differs in recording/ reproducing gap width from the 1st magnetic head. CONSTITUTION:The magnetic disk medium 1 rotates at a prescribed rotating speed and the magnetic head a2 and magnetic head b3 inspects errors of the medium 1 respectively. The head a2 has the same track width as that of a magnetic head used actually by a magnetic disk device and the head b3, on the other hand, differs in track width from the head a2. Both heads are mounted on an arm 4, which is fixed to a scanning part 5. A recording and reproducing part 6 records inspection data on the medium 1 by applying a prescribed write signal to the head a2 or b3 or processes the read signal of the inspection data reproduced by the head a2 or b3 from the medium 1. Then when an error detection part 7 detects the read signal of the recording/reproducing part 6 as an error, error information is sent to an error comparison part 8 to discriminate the defective shape.
JP17889787A 1987-07-20 1987-07-20 Inspecting method for magnetic disk medium Pending JPS6423178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17889787A JPS6423178A (en) 1987-07-20 1987-07-20 Inspecting method for magnetic disk medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17889787A JPS6423178A (en) 1987-07-20 1987-07-20 Inspecting method for magnetic disk medium

Publications (1)

Publication Number Publication Date
JPS6423178A true JPS6423178A (en) 1989-01-25

Family

ID=16056602

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17889787A Pending JPS6423178A (en) 1987-07-20 1987-07-20 Inspecting method for magnetic disk medium

Country Status (1)

Country Link
JP (1) JPS6423178A (en)

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