JPS5548877A - Magnetic memory unit - Google Patents

Magnetic memory unit

Info

Publication number
JPS5548877A
JPS5548877A JP12040278A JP12040278A JPS5548877A JP S5548877 A JPS5548877 A JP S5548877A JP 12040278 A JP12040278 A JP 12040278A JP 12040278 A JP12040278 A JP 12040278A JP S5548877 A JPS5548877 A JP S5548877A
Authority
JP
Japan
Prior art keywords
magnetic disc
chamber
disc chamber
throttle
external
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
JP12040278A
Other languages
Japanese (ja)
Inventor
Reizo Kaneko
Akio Tago
Shigemitsu Oguchi
Shigehisa Fukui
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12040278A priority Critical patent/JPS5548877A/en
Priority to US06/080,247 priority patent/US4307425A/en
Publication of JPS5548877A publication Critical patent/JPS5548877A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
    • G11B23/505—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers
    • G11B23/507—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers combined with means for reducing influence of physical parameters, e.g. temperature change, moisture

Landscapes

  • Drying Of Gases (AREA)

Abstract

PURPOSE:To extend the life of moisture absorbent, by lowering the invasion speed due to diffusion of external moisture, through the provision of throttle consisting of fine path between the magnetic disc chamber and external air. CONSTITUTION:The magnetic disc 6 is contained to the magnetic disc chamber 8 consisting of the base 1 and cover 9, and it is kept dry via the filter 9 with the moisture absorbent 12 filled in the vessel 11. the throttle 13 is formed on the base 1 interrupting the magnetic disc chamber 8 and external air, and the filter 10 is fitted outside of it. The throttle 13 has the flowing resistance to the degree that the air pressure in the magnetic chamber 8 is not excessively changed to the external pressure when the air in the magnetic disc chamber 8 is increased or fallen in temperature, and the invasion of the moisture of external air due to diffusion into the magnetic disc chamber 8 can be avoided.
JP12040278A 1978-10-02 1978-10-02 Magnetic memory unit Pending JPS5548877A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP12040278A JPS5548877A (en) 1978-10-02 1978-10-02 Magnetic memory unit
US06/080,247 US4307425A (en) 1978-10-02 1979-10-01 Breathing device for a closed housing of a magnetic memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12040278A JPS5548877A (en) 1978-10-02 1978-10-02 Magnetic memory unit

Publications (1)

Publication Number Publication Date
JPS5548877A true JPS5548877A (en) 1980-04-08

Family

ID=14785315

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12040278A Pending JPS5548877A (en) 1978-10-02 1978-10-02 Magnetic memory unit

Country Status (1)

Country Link
JP (1) JPS5548877A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55157170A (en) * 1979-05-21 1980-12-06 Nippon Telegr & Teleph Corp <Ntt> Magnetic storage device
JPS62184685A (en) * 1986-02-10 1987-08-13 Nippon Telegr & Teleph Corp <Ntt> Magnetic disc device
JP2009134777A (en) * 2007-11-28 2009-06-18 Hitachi Global Storage Technologies Netherlands Bv Magnetic disk unit and manufacturing method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55157170A (en) * 1979-05-21 1980-12-06 Nippon Telegr & Teleph Corp <Ntt> Magnetic storage device
JPH0127513B2 (en) * 1979-05-21 1989-05-29 Nippon Telegraph & Telephone
JPS62184685A (en) * 1986-02-10 1987-08-13 Nippon Telegr & Teleph Corp <Ntt> Magnetic disc device
JP2009134777A (en) * 2007-11-28 2009-06-18 Hitachi Global Storage Technologies Netherlands Bv Magnetic disk unit and manufacturing method thereof

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