JPS6433701A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS6433701A
JPS6433701A JP18888487A JP18888487A JPS6433701A JP S6433701 A JPS6433701 A JP S6433701A JP 18888487 A JP18888487 A JP 18888487A JP 18888487 A JP18888487 A JP 18888487A JP S6433701 A JPS6433701 A JP S6433701A
Authority
JP
Japan
Prior art keywords
medium
recording
disk device
data
heads
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
JP18888487A
Other languages
Japanese (ja)
Inventor
Yoshitaka Ono
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP18888487A priority Critical patent/JPS6433701A/en
Publication of JPS6433701A publication Critical patent/JPS6433701A/en
Pending legal-status Critical Current

Links

Landscapes

  • Digital Magnetic Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To simplify a correspondence to evaluation data or a parts change by providing a specific area to be able to execute a recording and a reproducing, when recording and reproducing areas are provided to a magnetic recording medium, besides these normal areas, recording peculiar data concerning a disk device to this specific area, switching and using it. CONSTITUTION:A magnetic disk device is composed of a switching means 11 to the specific area, a medium 12 to have a medium surface besides the number of medium surfaces shown in a specification and data heads 13 and 14 to engage to this. The switching means 11 makes the heads 13 and 14 possible to execute the recording to the medium 12 in the stage of manufacturing and testing the disk device and simultaneously, the peculiar data of the evaluation data, test data or parts specification, etc., are recorded to the medium 12 by a control device not shown in the figure. After that, heads 16 and 17 are abutted to a medium 15 with using the means 11 as usual and the device is checked and shipped. Thus, the information recorded in the manufacturing stage can be kept for a long time and another recording means goes to be unnecessary.
JP18888487A 1987-07-30 1987-07-30 Magnetic disk device Pending JPS6433701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18888487A JPS6433701A (en) 1987-07-30 1987-07-30 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18888487A JPS6433701A (en) 1987-07-30 1987-07-30 Magnetic disk device

Publications (1)

Publication Number Publication Date
JPS6433701A true JPS6433701A (en) 1989-02-03

Family

ID=16231564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18888487A Pending JPS6433701A (en) 1987-07-30 1987-07-30 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPS6433701A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104740797A (en) * 2013-12-31 2015-07-01 镇江新元素医药科技有限公司 Respirator capable of filtering PM (particulate matters) 2.5 effectively

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104740797A (en) * 2013-12-31 2015-07-01 镇江新元素医药科技有限公司 Respirator capable of filtering PM (particulate matters) 2.5 effectively

Similar Documents

Publication Publication Date Title
EP0351470A3 (en) Automatic disk exchange device
EP0382154A3 (en) Optical disc recording system
DE3584185D1 (en) MAGNETIC DISK PLAYER.
CA2067564A1 (en) Information recording and reproducing apparatus
JPS6437745A (en) Magneto-optical disk device
JPS6433701A (en) Magnetic disk device
DE3066828D1 (en) Video player/recorder for recording on a blank disk and method for home recording
JPS5625243A (en) Optical memory medium
EP0285452A3 (en) Magnetic disk apparatus using both servo-surface servo and data-surface servo
EP0351837A3 (en) Read/write head slider with medium access aperture
JPS6429784A (en) Testing method for defect of magnetic disk medium
DE58908103D1 (en) Tachograph with time-dependent driving means for diagram disks serving as recording media.
JPS56119918A (en) Magnetic disc memory device
JPS648551A (en) Disk driver and disk cartridge used for the driver
JPS6484486A (en) Magnetic recording/reproducing device and magnetic head
JPS6473557A (en) Recording state decision device for magnetic recorder
JPS6446212A (en) Floppy disk for head cleaning
JPS6425359A (en) Optical disk medium
JPS6437768A (en) Recording and reproducing system
JPS56153561A (en) Magnetic recorder and reproducer for magnetic medium
EP0025636A3 (en) Perpetuation of information in magnetically recorded medium
JPS6459689A (en) Information recording and reproducing device
JPS5778677A (en) Magnetic disk storage device
JPS5715238A (en) Magnetic recorder and reproducer
JPS5730116A (en) Magnetic head