[go: up one dir, main page]

KR930023934A - Method of manufacturing magnetic recording medium - Google Patents

Method of manufacturing magnetic recording medium Download PDF

Info

Publication number
KR930023934A
KR930023934A KR1019920007479A KR920007479A KR930023934A KR 930023934 A KR930023934 A KR 930023934A KR 1019920007479 A KR1019920007479 A KR 1019920007479A KR 920007479 A KR920007479 A KR 920007479A KR 930023934 A KR930023934 A KR 930023934A
Authority
KR
South Korea
Prior art keywords
magnetic
recording medium
magnetic recording
beads
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.)
Granted
Application number
KR1019920007479A
Other languages
Korean (ko)
Other versions
KR950008667B1 (en
Inventor
한창덕
Original Assignee
이헌조
주식회사 금성사
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 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019920007479A priority Critical patent/KR950008667B1/en
Publication of KR930023934A publication Critical patent/KR930023934A/en
Application granted granted Critical
Publication of KR950008667B1 publication Critical patent/KR950008667B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

본 발명은 자기기록매체의 제조방법에 관한 것으로, 비자성 지지체 상에 자성재료를 코팅하여 자성층을 형성함에 있어서, 자성재료 분산매체로 사용되는 비드를 분산공정 초기에는 지르코니아 비드를, 분산공정 말기에는 그래스 비드를 사용하여 분산공정을 행함을 특징으로 하고 있다. 이러한 본 발명은 자성재료의 분산효율을 증대시킬 수 있게 되었고, 이에 따라 자기기록매체의 전자변환특성, 자기특성, 드롭 아우트 감소 등이 우수한 자기적 특성을 갖게 되었다.The present invention relates to a method for manufacturing a magnetic recording medium, wherein in forming a magnetic layer by coating a magnetic material on a non-magnetic support, zirconia beads are used at the beginning of the dispersing process and beads are used as the magnetic material dispersing medium. The dispersion process is performed using glass beads. The present invention can increase the dispersion efficiency of the magnetic material, and thus has excellent magnetic properties such as electronic conversion characteristics, magnetic characteristics, and dropout reduction of the magnetic recording medium.

Description

자기기록매체의 제조방법Method of manufacturing magnetic recording medium

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (3)

비자성체 지지체 상에 자성재료를 코팅하여 자성층을 형성함에 있어서, 자성재료 분산매체로 사용되는 비드를 분산공정 초기에는 지르코니아 비드를, 분산공정 말기에는 그래스 비드를 사용함을 특징으로 하는 자기기록매체의 제조방법.In forming a magnetic layer by coating a magnetic material on a non-magnetic support, a magnetic recording medium is prepared, in which beads used as a magnetic material dispersion medium are zirconia beads at the beginning of the dispersing process and glass beads at the end of the dispersing process. Way. 제1항에 있어서, 상기 지르코니아 비드의 입자형태가 구상으로 크기가 1.0-3.0mm인 것을 특징으로 하는 자기기록매체의 제조방법.The method of manufacturing a magnetic recording medium according to claim 1, wherein the zirconia beads have a spherical particle shape of 1.0-3.0 mm in size. 제1항에 있어서, 상기 그래스 비드의 입자 형태가 구상으로 크기가 1.0-4.0mm인 것을 특징으로 하는 자기기록매체의 제조방법.The method of manufacturing a magnetic recording medium according to claim 1, wherein the particle shape of the glass beads is spherical in size 1.0-4.0 mm. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920007479A 1992-05-01 1992-05-01 Memufacturing method of magnetic recording medium Expired - Fee Related KR950008667B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920007479A KR950008667B1 (en) 1992-05-01 1992-05-01 Memufacturing method of magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920007479A KR950008667B1 (en) 1992-05-01 1992-05-01 Memufacturing method of magnetic recording medium

Publications (2)

Publication Number Publication Date
KR930023934A true KR930023934A (en) 1993-12-21
KR950008667B1 KR950008667B1 (en) 1995-08-04

Family

ID=19332645

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920007479A Expired - Fee Related KR950008667B1 (en) 1992-05-01 1992-05-01 Memufacturing method of magnetic recording medium

Country Status (1)

Country Link
KR (1) KR950008667B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100698935B1 (en) * 2005-06-15 2007-03-23 주식회사 선진화학 Manufacturing method of high refractive spherical beads

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100698935B1 (en) * 2005-06-15 2007-03-23 주식회사 선진화학 Manufacturing method of high refractive spherical beads

Also Published As

Publication number Publication date
KR950008667B1 (en) 1995-08-04

Similar Documents

Publication Publication Date Title
KR910001820A (en) Magnetic material and magnetic head using the same
EP0960675A4 (en) ULTRAFINE PARTICLES AND PROCESS FOR PRODUCTION
KR850000963A (en) Method for preparing finely pulverized polyvalent metal salt of 2-mercaptopyridine-N-oxide and antibacterial composition thereof
BR9207032A (en) Process for making coated magnetic particles coated composite particle suitable for magnetic recording media and magnetic recording media
KR910003036A (en) Plate Type Substrate
NO20012734L (en) Process for preparing agglomerates comprising a core-shell structure
JPS57183630A (en) Magnetic recording medium
KR930023934A (en) Method of manufacturing magnetic recording medium
KR850005663A (en) Magnetic coating composition and magnetic recording medium containing iron carbide
KR850002533A (en) Magnetic recording media
KR920002471A (en) Method for producing iron carbide fine particles
KR950034095A (en) Magnetic recording medium with back coating comprising multicomponent nonmagnetic particles
KR940004537A (en) Magnetic recording medium
KR930003027A (en) Method of manufacturing magnetic recording medium
KR850005125A (en) Iron carbide-containing needle-like particles coated with a surface treatment agent
KR960701435A (en) HIGH RECORDING DENSITY MAGNETIC RECORDING MEDIUM HAVING AN UNDERCOAT LAYER
KR960002165A (en) Method of manufacturing magnetic recording medium and magnetic recording medium
JPS57183629A (en) Magnetic coat medium of vertical orientation and its production
KR910012011A (en) Biaxially Stretched Polyester Film for Magnetic Recording Media
KR930014308A (en) Durable magnetic media
KR930014313A (en) Method of manufacturing magnetic recording medium
KR960019106A (en) Method of manufacturing magnetic recording medium
KR920008680A (en) Magnetic recording media
JPS5758246A (en) Manufacture of vertical magnetic recording medium
KR927004274A (en) Magnetic recording element and magnetic recording medium using the same

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

St.27 status event code: A-0-1-A10-A12-nap-PA0109

PA0201 Request for examination

St.27 status event code: A-1-2-D10-D11-exm-PA0201

R17-X000 Change to representative recorded

St.27 status event code: A-3-3-R10-R17-oth-X000

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

G160 Decision to publish patent application
PG1605 Publication of application before grant of patent

St.27 status event code: A-2-2-Q10-Q13-nap-PG1605

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

St.27 status event code: A-1-2-D10-D22-exm-PE0701

GRNT Written decision to grant
PR0701 Registration of establishment

St.27 status event code: A-2-4-F10-F11-exm-PR0701

PR1002 Payment of registration fee

St.27 status event code: A-2-2-U10-U11-oth-PR1002

Fee payment year number: 1

FPAY Annual fee payment

Payment date: 19971229

Year of fee payment: 4

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 4

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R13-asn-PN2301

St.27 status event code: A-5-5-R10-R11-asn-PN2301

LAPS Lapse due to unpaid annual fee
PC1903 Unpaid annual fee

St.27 status event code: A-4-4-U10-U13-oth-PC1903

Not in force date: 19990805

Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R13-asn-PN2301

St.27 status event code: A-5-5-R10-R11-asn-PN2301

PC1903 Unpaid annual fee

St.27 status event code: N-4-6-H10-H13-oth-PC1903

Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

Not in force date: 19990805

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R13-asn-PN2301

St.27 status event code: A-5-5-R10-R11-asn-PN2301

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R13-asn-PN2301

St.27 status event code: A-5-5-R10-R11-asn-PN2301

P22-X000 Classification modified

St.27 status event code: A-4-4-P10-P22-nap-X000