SG81932A1 - Recording medium and disc cartridge - Google Patents

Recording medium and disc cartridge

Info

Publication number
SG81932A1
SG81932A1 SG9801821A SG1998001821A SG81932A1 SG 81932 A1 SG81932 A1 SG 81932A1 SG 9801821 A SG9801821 A SG 9801821A SG 1998001821 A SG1998001821 A SG 1998001821A SG 81932 A1 SG81932 A1 SG 81932A1
Authority
SG
Singapore
Prior art keywords
recording medium
disc cartridge
cartridge
disc
recording
Prior art date
Application number
SG9801821A
Inventor
Tomita Yasushi
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of SG81932A1 publication Critical patent/SG81932A1/en

Links

SG9801821A 1997-07-31 1998-07-17 Recording medium and disc cartridge SG81932A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20698497 1997-07-31

Publications (1)

Publication Number Publication Date
SG81932A1 true SG81932A1 (en) 2001-07-24

Family

ID=16532261

Family Applications (1)

Application Number Title Priority Date Filing Date
SG9801821A SG81932A1 (en) 1997-07-31 1998-07-17 Recording medium and disc cartridge

Country Status (1)

Country Link
SG (1) SG81932A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5226033A (en) * 1990-03-27 1993-07-06 Sony Corporation Magneto-optical disk hub in which the inner peripheral edge portion of the spindle opening is strengthened and made abrasion resistant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5226033A (en) * 1990-03-27 1993-07-06 Sony Corporation Magneto-optical disk hub in which the inner peripheral edge portion of the spindle opening is strengthened and made abrasion resistant
US5289456A (en) * 1990-03-27 1994-02-22 Sony Corporation Method of forming a magneto-optical disk hub in which the inner peripheral edge portion of the spindle opening is strengthened and made abrasion resistant
US5438564A (en) * 1990-03-27 1995-08-01 Sony Corporation Magneto-optical disk hub in which the inner peripheral edge portion of the spindle opening is strengthened and made abrasion resistant

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