JPS60159531U - magnetic recording disk - Google Patents

magnetic recording disk

Info

Publication number
JPS60159531U
JPS60159531U JP4397484U JP4397484U JPS60159531U JP S60159531 U JPS60159531 U JP S60159531U JP 4397484 U JP4397484 U JP 4397484U JP 4397484 U JP4397484 U JP 4397484U JP S60159531 U JPS60159531 U JP S60159531U
Authority
JP
Japan
Prior art keywords
magnetic recording
recording disk
glass substrate
thin film
magnetic material
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
JP4397484U
Other languages
Japanese (ja)
Inventor
坂田　宣弘
秀夫 河原
Original Assignee
日本板硝子株式会社
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 日本板硝子株式会社 filed Critical 日本板硝子株式会社
Priority to JP4397484U priority Critical patent/JPS60159531U/en
Publication of JPS60159531U publication Critical patent/JPS60159531U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本考案の磁気記録ディスク１部所面図である
。FIG. 1 is a partial plan view of a magnetic recording disk according to the present invention.

Claims (1)

【実用新案登録請求の範囲】 一（１）円盤状のガラス基盤に磁気材料薄膜を積層して
なる磁気記録ディスクにおいて、該磁気材料薄膜が直接
ガラス基盤に積層され、該磁気材料薄膜上に４００〜１
８００オングストロームの厚さの有機シリコン化合物の
焼成５ｉｎ２保護膜を有することを特徴とする磁気記録
ディスク。 （２）該ガラス基板がコルバーン法又はフロート法によ
り連続的に成形されたソーダ・ライム・シリカガラス板
である実用新案登録請求の範囲第１項記載の磁気記録デ
ィスク。[Claims for Utility Model Registration] 1.(1) In a magnetic recording disk formed by laminating a thin film of magnetic material on a disk-shaped glass substrate, the thin film of magnetic material is directly laminated on the glass substrate, ~1
A magnetic recording disk characterized in that it has a fired 5in2 protective film of an organosilicon compound with a thickness of 800 angstroms. (2) The magnetic recording disk according to claim 1, wherein the glass substrate is a soda-lime-silica glass plate continuously formed by the Colburn method or the float method.
JP4397484U 1984-03-27 1984-03-27 magnetic recording disk Pending JPS60159531U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4397484U JPS60159531U (en) 1984-03-27 1984-03-27 magnetic recording disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4397484U JPS60159531U (en) 1984-03-27 1984-03-27 magnetic recording disk

Publications (1)

Publication Number Publication Date
JPS60159531U true JPS60159531U (en) 1985-10-23

Family

ID=30556133

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4397484U Pending JPS60159531U (en) 1984-03-27 1984-03-27 magnetic recording disk

Country Status (1)

Country Link
JP (1) JPS60159531U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7065984B2 (en) 2001-03-27 2006-06-27 Nippon Sheet Glass Co., Ltd. Substrate for information recording media and manufacturing method thereof, information recording medium, and starting material glass plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7065984B2 (en) 2001-03-27 2006-06-27 Nippon Sheet Glass Co., Ltd. Substrate for information recording media and manufacturing method thereof, information recording medium, and starting material glass plate
US7604882B2 (en) 2001-03-27 2009-10-20 Nippon Sheet Glass Co., Ltd. Substrate for information recording media and manufacturing method thereof, information recording medium, and starting material glass plate
US7736770B2 (en) 2001-03-27 2010-06-15 Nippon Sheet Glass Co., Ltd. Substrate for information recording media and manufacturing method thereof, information recording medium, and starting material glass plate

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