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JPS56137553A - Laminated flexible magnetic disc device - Google Patents

Laminated flexible magnetic disc device

Info

Publication number
JPS56137553A
JPS56137553A JP4090280A JP4090280A JPS56137553A JP S56137553 A JPS56137553 A JP S56137553A JP 4090280 A JP4090280 A JP 4090280A JP 4090280 A JP4090280 A JP 4090280A JP S56137553 A JPS56137553 A JP S56137553A
Authority
JP
Japan
Prior art keywords
magnetic disc
disc
grooves
information converter
comparison
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
JP4090280A
Other languages
Japanese (ja)
Inventor
Eiichi Nanba
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4090280A priority Critical patent/JPS56137553A/en
Publication of JPS56137553A publication Critical patent/JPS56137553A/en
Pending legal-status Critical Current

Links

Landscapes

  • Automatic Disk Changers (AREA)

Abstract

PURPOSE: To enable the device to have high recording density, by providing the surface of the disc separator with a plurality of grooves parallel to the tangent of the external circumference of magnetic disc.
CONSTITUTION: Ten large and small grooves 22 about 0.1mm in depth D are provided around the information converter 24 on the surface 23 of disc separator. That is, the surface of the disc separator 23 constituting gas-bearing consists of a plurality of smooth curved surfaces split with the grooves, and the surface constituting the gas bearing near the information converter 24 is about halved in comparison with conventional ones. Thus, the film thickness of the gas bearing determined with the balance three forces among the force caused by the bending rigidness of the magnetic disc 13, centrifugal force and pressure distribution, can be reduced in comparison with conventional ones as shown in Figure. As a result, the distance between the information recording plane 18 of the desired magnetic disc 13-1 and the information converter 24 can be reduced to 1μ or less, which enables high density recording 3,000bpi or more.
COPYRIGHT: (C)1981,JPO&Japio
JP4090280A 1980-03-28 1980-03-28 Laminated flexible magnetic disc device Pending JPS56137553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4090280A JPS56137553A (en) 1980-03-28 1980-03-28 Laminated flexible magnetic disc device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4090280A JPS56137553A (en) 1980-03-28 1980-03-28 Laminated flexible magnetic disc device

Publications (1)

Publication Number Publication Date
JPS56137553A true JPS56137553A (en) 1981-10-27

Family

ID=12593434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4090280A Pending JPS56137553A (en) 1980-03-28 1980-03-28 Laminated flexible magnetic disc device

Country Status (1)

Country Link
JP (1) JPS56137553A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130871A (en) * 1990-07-26 1992-07-14 Seagate Technology, Inc. Disk drive with rotatable diamond-shaped actuator arm
USH1573H (en) * 1993-07-01 1996-08-06 Budde; Richard A. Reduced mass/inertia suspension

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5248796U (en) * 1975-10-06 1977-04-07
JPS52133595U (en) * 1976-04-06 1977-10-11
JPS5329661U (en) * 1976-08-19 1978-03-14

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5248796U (en) * 1975-10-06 1977-04-07
JPS52133595U (en) * 1976-04-06 1977-10-11
JPS5329661U (en) * 1976-08-19 1978-03-14

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130871A (en) * 1990-07-26 1992-07-14 Seagate Technology, Inc. Disk drive with rotatable diamond-shaped actuator arm
USH1573H (en) * 1993-07-01 1996-08-06 Budde; Richard A. Reduced mass/inertia suspension

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