JPS57109145A - Signal recording and reproducing device - Google Patents

Signal recording and reproducing device

Info

Publication number
JPS57109145A
JPS57109145A JP18586780A JP18586780A JPS57109145A JP S57109145 A JPS57109145 A JP S57109145A JP 18586780 A JP18586780 A JP 18586780A JP 18586780 A JP18586780 A JP 18586780A JP S57109145 A JPS57109145 A JP S57109145A
Authority
JP
Japan
Prior art keywords
gap
recording
turntable
medium
recording medium
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.)
Granted
Application number
JP18586780A
Other languages
Japanese (ja)
Other versions
JPS6214895B2 (en
Inventor
Junichiro Ikeuchi
Shuzo Hirahara
Taiji Higashiyama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP18586780A priority Critical patent/JPS57109145A/en
Publication of JPS57109145A publication Critical patent/JPS57109145A/en
Publication of JPS6214895B2 publication Critical patent/JPS6214895B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/08—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by electric charge or by variation of electric resistance or capacitance

Landscapes

  • Rotational Drive Of Disk (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To achieve excellent recording and reproducing, by eliminating the effect due to unbalance of gap between a recording medium and a turntable, through coating a conductor film at the back of a semiconductor base of a recording medium. CONSTITUTION:A conductor film 9 is coated at the back of a semiconductor substrate 2 of a recording medium 1 with vapor deposition of aluminum film, and the film is fixed to a turntable 5 with a metallic fixture 10. Thus, even if the gap between the medium 1 and the turntable 5 is not uniform, the back side of the substrate 2 is kept to the same potential, the electric field distribution in the medium 1 by a recording signal voltage 7 is not subject to the gap, allowing to make excellent recording with high reproducibility. Further, at playback, since the electrostatic capacitance detected at a reproduction circuit is less in the effect of unbalanced gap, excellent reproduction can be made.
JP18586780A 1980-12-26 1980-12-26 Signal recording and reproducing device Granted JPS57109145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18586780A JPS57109145A (en) 1980-12-26 1980-12-26 Signal recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18586780A JPS57109145A (en) 1980-12-26 1980-12-26 Signal recording and reproducing device

Publications (2)

Publication Number Publication Date
JPS57109145A true JPS57109145A (en) 1982-07-07
JPS6214895B2 JPS6214895B2 (en) 1987-04-04

Family

ID=16178260

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18586780A Granted JPS57109145A (en) 1980-12-26 1980-12-26 Signal recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS57109145A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0432870Y2 (en) * 1986-04-14 1992-08-06

Also Published As

Publication number Publication date
JPS6214895B2 (en) 1987-04-04

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