GB8420131D0 - Magnetic recording disc - Google Patents

Magnetic recording disc

Info

Publication number
GB8420131D0
GB8420131D0 GB848420131A GB8420131A GB8420131D0 GB 8420131 D0 GB8420131 D0 GB 8420131D0 GB 848420131 A GB848420131 A GB 848420131A GB 8420131 A GB8420131 A GB 8420131A GB 8420131 D0 GB8420131 D0 GB 8420131D0
Authority
GB
United Kingdom
Prior art keywords
magnetic recording
recording disc
disc
magnetic
recording
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
GB848420131A
Other versions
GB2146269A (en
GB2146269B (en
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Publication of GB8420131D0 publication Critical patent/GB8420131D0/en
Publication of GB2146269A publication Critical patent/GB2146269A/en
Application granted granted Critical
Publication of GB2146269B publication Critical patent/GB2146269B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer
    • G11B5/7356—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
GB08420131A 1983-08-29 1984-08-08 Magnetic recording disc and process for its production Expired GB2146269B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58156313A JPS6050619A (en) 1983-08-29 1983-08-29 Magnetic disc and its production

Publications (3)

Publication Number Publication Date
GB8420131D0 true GB8420131D0 (en) 1984-09-12
GB2146269A GB2146269A (en) 1985-04-17
GB2146269B GB2146269B (en) 1987-03-11

Family

ID=15625065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08420131A Expired GB2146269B (en) 1983-08-29 1984-08-08 Magnetic recording disc and process for its production

Country Status (5)

Country Link
JP (1) JPS6050619A (en)
DE (1) DE3430758A1 (en)
FR (1) FR2551246B1 (en)
GB (1) GB2146269B (en)
NL (1) NL8402557A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3162863B2 (en) * 1993-02-15 2001-05-08 住友金属工業株式会社 Railway vehicle vibration control device
CN103450790A (en) * 2013-08-22 2013-12-18 吴江市物华五金制品有限公司 Anti-oxidizing paint for metal and wood

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2463477B1 (en) * 1979-08-06 1988-04-08 Sony Corp MAGNETIC RECORDING ELEMENT
JPS56159838A (en) * 1980-05-12 1981-12-09 Tokyo Jiki Insatsu Kk Magnetic recording medium
JPS57150136A (en) * 1981-03-09 1982-09-16 Fuji Photo Film Co Ltd Magnetic recording medium and its manufacture
JPS57169929A (en) * 1981-04-13 1982-10-19 Tdk Corp Magnetic recording medium and its manufacture
JPS57200937A (en) * 1981-06-05 1982-12-09 Tdk Corp Magnetic recording medium
JPS583132A (en) * 1981-06-30 1983-01-08 Fuji Photo Film Co Ltd Magnetic recording medium
GB2116455B (en) * 1981-08-20 1985-05-15 Tdk Electronics Co Ltd Two-layer coated magnetic recording medium
JPS5965929A (en) * 1982-10-06 1984-04-14 Tdk Corp Magnetic recording medium and its manufacture

Also Published As

Publication number Publication date
GB2146269A (en) 1985-04-17
FR2551246B1 (en) 1995-03-03
DE3430758A1 (en) 1985-03-21
GB2146269B (en) 1987-03-11
NL8402557A (en) 1985-03-18
FR2551246A1 (en) 1985-03-01
JPS6050619A (en) 1985-03-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960808