KR960002164A - Magnetic recording medium - Google Patents

Magnetic recording medium Download PDF

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Publication number
KR960002164A
KR960002164A KR1019950015637A KR19950015637A KR960002164A KR 960002164 A KR960002164 A KR 960002164A KR 1019950015637 A KR1019950015637 A KR 1019950015637A KR 19950015637 A KR19950015637 A KR 19950015637A KR 960002164 A KR960002164 A KR 960002164A
Authority
KR
South Korea
Prior art keywords
recording medium
magnetic recording
magnetic
binder
powder
Prior art date
Application number
KR1019950015637A
Other languages
Korean (ko)
Inventor
유이찌 사사끼
히도시 와다나베
와다루 오가와
신이찌 아베
히로히도 아다기
다로 오무라
Original Assignee
이데이 노부유끼
소니 가부시기가이샤
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 이데이 노부유끼, 소니 가부시기가이샤 filed Critical 이데이 노부유끼
Publication of KR960002164A publication Critical patent/KR960002164A/en

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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature

Landscapes

  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)

Abstract

내구성이 우수하고, 고온환경에서 주행시켰을 때에서 면변화(面變化)가 적은 자기 기록매체를 제공한다. 또한, 고온다습하에서의 보존에 의해서도 점착이 일어나지 않는 자기기록매체를 제공한다. 비자성 지지체의 한쪽의 면에 자성 분말과 결합제를 주체로 하는 자성층을 배설하고, 이것과는 반대측의 면에 탄소계 분말을 주체로 하는 충전제를 결합제에 분산시켜 이루어지는 백코트층을 배설한다. 백코트층에는 평균입경 0.1~0.5㎛, 모스경도 7이상의 비자성 분말을 충전제의 전량에 대하여 2~10 중량% 첨가한다. 백코트층의 결합제는 섬유소계수지와 폴리우레탄수지를 사용한다. 점착방지를 위해서는, 백코트층에 다시 실리콘오일을 첨가한다.Provided is a magnetic recording medium having excellent durability and low surface change when traveling in a high temperature environment. Further, a magnetic recording medium is provided in which adhesion does not occur even when stored under high temperature and high humidity. A magnetic layer mainly composed of magnetic powder and a binder is disposed on one surface of the nonmagnetic support, and a backcoat layer formed by dispersing a filler mainly composed of carbon-based powder in the binder on the surface on the opposite side thereof is provided. A non-magnetic powder having an average particle diameter of 0.1 to 0.5 µm and a Mohs hardness of 7 or more is added to the back coat layer in an amount of 2 to 10 wt% based on the total amount of the filler. The binder of the back coat layer uses a fibrin resin and a polyurethane resin. To prevent adhesion, silicon oil is added to the back coat layer again.

Description

자기기록매체Magnetic recording medium

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

제1도는 점착의 평가방법을 나타낸 모식도.1 is a schematic diagram showing a method for evaluating adhesion.

Claims (3)

비자성 지지체의 한쪽의 면에 자성 분말과 결합제를 주체로 하는 자성층을 가지는 동시에, 이것과는 반대측의 면에 탄소계 분말을 주체로 하는 충전제를 결합제에 분산시켜 이루어지는 백코트층을 가지고 이루어지는 자기기록매체에 있어서, 상기 백코트층이 평균입경 0.1~0.5㎛, 모스경도 7이상의 비자성 분말을 충전제의 전량에 대하여 2~10 중량% 함유하고, 또한 결합제로서 섬유소계 수지 및 폴리우레탄수지를 함유하는 것을 특징으로 하는 자기기록매체.A magnetic recording medium comprising a magnetic layer mainly composed of magnetic powder and a binder on one side of the nonmagnetic support, and a back coat layer formed by dispersing a filler mainly composed of carbon-based powder in the binder on the opposite side of the nonmagnetic support. The backcoat layer comprises 2 to 10% by weight of non-magnetic powder having an average particle diameter of 0.1 to 0.5 µm and a Mohs hardness of 7 to 10% by weight based on the total amount of the filler. Magnetic recording medium. 제1항에 있어서, 탄소계 분말이 카본블랙인 것을 특징으로 하는 자기기록매체.A magnetic recording medium according to claim 1, wherein the carbonaceous powder is carbon black. 제1항에 있어서, 백코트층의 실리콘오일을 함유하는 것을 특징으로 하는 자기기록매체.A magnetic recording medium according to claim 1, which contains silicon oil of the backcoat layer. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950015637A 1994-06-16 1995-06-14 Magnetic recording medium KR960002164A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1994-134531 1994-06-16
JP6134531A JPH087254A (en) 1994-06-16 1994-06-16 Magnetic recording medium

Publications (1)

Publication Number Publication Date
KR960002164A true KR960002164A (en) 1996-01-26

Family

ID=15130504

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950015637A KR960002164A (en) 1994-06-16 1995-06-14 Magnetic recording medium

Country Status (2)

Country Link
JP (1) JPH087254A (en)
KR (1) KR960002164A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5134199B2 (en) * 2005-09-28 2013-01-30 株式会社東芝 Resin composition and recycled resin

Also Published As

Publication number Publication date
JPH087254A (en) 1996-01-12

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