JPS54113312A - Magnetic disc device - Google Patents

Magnetic disc device

Info

Publication number
JPS54113312A
JPS54113312A JP1961278A JP1961278A JPS54113312A JP S54113312 A JPS54113312 A JP S54113312A JP 1961278 A JP1961278 A JP 1961278A JP 1961278 A JP1961278 A JP 1961278A JP S54113312 A JPS54113312 A JP S54113312A
Authority
JP
Japan
Prior art keywords
carriage
fixed
discs
head
spindle
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
JP1961278A
Other languages
Japanese (ja)
Inventor
Tadashi Yoshizawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP1961278A priority Critical patent/JPS54113312A/en
Publication of JPS54113312A publication Critical patent/JPS54113312A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the access time and the off-track, without enlarging the size of the drive source of a carriage, by making a disc, a head arm and the carriage of materials having an identical coefficient of thermal expansion.
CONSTITUTION: A spindle 1 is rotatably supported through bearings 4 and 4' upon a housing 3. A plurality of discs 6 are fixed concentrically with a preset pitch on a shaft 5 which in turn is fixed to the spindle 1. A plurality of head arms 7 are fixed with the same pitch as the discs 6 to the carriage 2. A read-out and write head 8 corresponding to each disc 6 is fixed to each arm 7 so that the carriage 2 is moved back and forth by means of a drive source 20. In this instance, the carriage 2, the discs 6 and the head arms 7 are made of the same material of magnesium or its alloy so that they have an identical coefficient of thermal expansion.
COPYRIGHT: (C)1979,JPO&Japio
JP1961278A 1978-02-24 1978-02-24 Magnetic disc device Pending JPS54113312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1961278A JPS54113312A (en) 1978-02-24 1978-02-24 Magnetic disc device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1961278A JPS54113312A (en) 1978-02-24 1978-02-24 Magnetic disc device

Publications (1)

Publication Number Publication Date
JPS54113312A true JPS54113312A (en) 1979-09-04

Family

ID=12003998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1961278A Pending JPS54113312A (en) 1978-02-24 1978-02-24 Magnetic disc device

Country Status (1)

Country Link
JP (1) JPS54113312A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56159867A (en) * 1980-05-15 1981-12-09 Mitsubishi Electric Corp Magnetic disk memory device
EP0055568A1 (en) * 1980-12-23 1982-07-07 Rodime PLC Read-write head thermal compensation system
JPS57201661U (en) * 1981-06-16 1982-12-22
JPS58146055A (en) * 1982-02-23 1983-08-31 Canon Electronics Inc Recording and reproducing disk device
EP0532609A1 (en) * 1990-06-01 1993-03-24 Conner Peripherals, Inc. Two and one half inch diameter multiple disk drive
EP0556287A1 (en) * 1990-11-09 1993-08-25 Conner Peripherals, Inc. High performance disk drive architecture

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56159867A (en) * 1980-05-15 1981-12-09 Mitsubishi Electric Corp Magnetic disk memory device
JPS6143780B2 (en) * 1980-05-15 1986-09-30 Mitsubishi Electric Corp
EP0055568A1 (en) * 1980-12-23 1982-07-07 Rodime PLC Read-write head thermal compensation system
JPS57201661U (en) * 1981-06-16 1982-12-22
JPS58146055A (en) * 1982-02-23 1983-08-31 Canon Electronics Inc Recording and reproducing disk device
EP0532609A1 (en) * 1990-06-01 1993-03-24 Conner Peripherals, Inc. Two and one half inch diameter multiple disk drive
EP0556287A1 (en) * 1990-11-09 1993-08-25 Conner Peripherals, Inc. High performance disk drive architecture
US5796557A (en) * 1990-11-09 1998-08-18 Seagate Technology, Inc. Disk drive architecture including a current-induced latching device

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