JPS567267A - Magnetic disc pack unit - Google Patents

Magnetic disc pack unit

Info

Publication number
JPS567267A
JPS567267A JP8038979A JP8038979A JPS567267A JP S567267 A JPS567267 A JP S567267A JP 8038979 A JP8038979 A JP 8038979A JP 8038979 A JP8038979 A JP 8038979A JP S567267 A JPS567267 A JP S567267A
Authority
JP
Japan
Prior art keywords
pack
medium
loading
circuit
signal
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
JP8038979A
Other languages
Japanese (ja)
Inventor
Yasuo Kubo
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 JP8038979A priority Critical patent/JPS567267A/en
Publication of JPS567267A publication Critical patent/JPS567267A/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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions

Landscapes

  • Feeding And Guiding Record Carriers (AREA)

Abstract

PURPOSE:To prevent accidents from being generated due to the operation miss for pack medium loading, by detecting the loading state of the pack medium cover to inhibit the start-up operation. CONSTITUTION:When pack medium 6 is put on spindle 7 of the magnetic disc pack unit, inhibiting circuit 5 is operated by cover fitting and removing signal (a) since the light from a light source does not reach the photodetecting element; and when the driving start operation is performed under this state, driving start signal (b) is transmitted, however, the operation of driving start circuit 9 is stopped by inhibiting signal C from circuit 5, and spindle motor starting signal (d) is not transmitted, and spindle motor driving circuit 10 is not operated, and spindle motor 11 continues the stop state. Next, when pack medium cover 1 is lifted and removed after loading of medium 6, the shielded light from the light source reaches the photodetecting element, and therefore, respective circuits are operated normally by this operation. As a result, accidents are prevented from being generated due to the operation miss for pack medium loading.
JP8038979A 1979-06-26 1979-06-26 Magnetic disc pack unit Pending JPS567267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8038979A JPS567267A (en) 1979-06-26 1979-06-26 Magnetic disc pack unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8038979A JPS567267A (en) 1979-06-26 1979-06-26 Magnetic disc pack unit

Publications (1)

Publication Number Publication Date
JPS567267A true JPS567267A (en) 1981-01-24

Family

ID=13716925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8038979A Pending JPS567267A (en) 1979-06-26 1979-06-26 Magnetic disc pack unit

Country Status (1)

Country Link
JP (1) JPS567267A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871571A (en) * 1981-10-24 1983-04-28 株式会社明電舎 Connecting structure for insulator coated bus
US4646192A (en) * 1981-12-23 1987-02-24 Cii-Honeywell Bull (Societe Anonyme) Magnetic disc cartridge having improved disc brake

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871571A (en) * 1981-10-24 1983-04-28 株式会社明電舎 Connecting structure for insulator coated bus
US4646192A (en) * 1981-12-23 1987-02-24 Cii-Honeywell Bull (Societe Anonyme) Magnetic disc cartridge having improved disc brake

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