KR930023932A - Magnetic recording medium and manufacturing method thereof - Google Patents

Magnetic recording medium and manufacturing method thereof Download PDF

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Publication number
KR930023932A
KR930023932A KR1019920008744A KR920008744A KR930023932A KR 930023932 A KR930023932 A KR 930023932A KR 1019920008744 A KR1019920008744 A KR 1019920008744A KR 920008744 A KR920008744 A KR 920008744A KR 930023932 A KR930023932 A KR 930023932A
Authority
KR
South Korea
Prior art keywords
back coat
filler
coat layer
magnetic recording
recording medium
Prior art date
Application number
KR1019920008744A
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Korean (ko)
Inventor
송의환
유득수
Original Assignee
하기주
주식회사 코오롱
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 하기주, 주식회사 코오롱 filed Critical 하기주
Priority to KR1019920008744A priority Critical patent/KR930023932A/en
Publication of KR930023932A publication Critical patent/KR930023932A/en

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Abstract

비자성 지지체 위에 자성도료를 도포하고 상기 지지체의 반대면에 카본블랙과 충전제를 함유한 백코오트용 도료를 도포하여 제조되는 자기 기록 매체에 있어서, 상기 충전제는 상기 백코오트층 형성용 도료의 비중보다 낮은 비중을 갖는 것을 선택하여 제조된 자기 기록 매체는 백코오트면의 표면 이활성 및 내구성이 우수하므로, 주행 내구성 및 전자변환 특성이 개선된다.In a magnetic recording medium prepared by applying a magnetic paint on a non-magnetic support, and coating a back coat paint containing carbon black and a filler on the opposite side of the support, the filler is less than the specific gravity of the back coat layer-forming paint. The magnetic recording medium prepared by selecting one having a low specific gravity is excellent in surface activity and durability of the back coat surface, so that the running durability and the electron conversion characteristics are improved.

Description

자기 기록 매체 및 그의 제조방법Magnetic recording medium and manufacturing method thereof

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

Claims (7)

비자성 지지체의 한쪽면에 자성도료를 도포하여 자성층을 형성하고, 상기 지지체의 반대면에 카본블랙과 충전제를 함유하는 백코오트층을 형성용 도료를 도포하여 백코오트층을 형성한 자기 기록 매체에 있어서, 상기 충전제의 비중은 상기 백코오트층 형성용 도료의 비중보다 낮은 것을 특징으로 하는 자기 기록 매체.A magnetic coating is formed on one side of the nonmagnetic support to form a magnetic layer, and on the opposite side of the support, a back coat layer containing carbon black and a filler is applied to form a back coat layer on the magnetic recording medium. The magnetic recording medium of claim 1, wherein a specific gravity of the filler is lower than a specific gravity of the back coat layer-forming paint. 제1항에 있어서, 상기 백코오트층 형성용 도료의 비중이 0.7g/cc이상이고 충전제의 상비중이 0.7g/cc미만임을 특징으로 하는 자기 기록 매체.The magnetic recording medium according to claim 1, wherein a specific gravity of the back coat layer-forming coating material is 0.7 g / cc or more and a specific gravity of the filler is less than 0.7 g / cc. 제1항에 또는 제2항에 있어서, 상기 충전제 분말의 입경이 백코오트층의 두께보다 작은 것을 특징으로 자기 기록 매체.The magnetic recording medium according to claim 1 or 2, wherein a particle diameter of the filler powder is smaller than a thickness of a back coat layer. 제3항에 있어서, 상기한 충전제 분말의 입경은 0.1~0.6㎛인 것을 특징으로 하는 자기 기록 매체.4. The magnetic recording medium of claim 3, wherein the filler powder has a particle diameter of 0.1 to 0.6 mu m. 제1항에 있어서, 상기한 충전제의 사용량은 카본블랙 100중량부에 대하여 1~20중량부 범위내임을 특징으로 하는 자기 기록 매체.The magnetic recording medium of claim 1, wherein the amount of the filler is in the range of 1 to 20 parts by weight based on 100 parts by weight of carbon black. 제1항에 있어서, 상기한 충전제가 벤조구아나민·포름알데히드 축합물, 벤조구아나민·멜라민·포름알데히드 축합물 또는 멜라민·포름알데히드 축합물로 이루어지지 군에서 선택되어지는 것을 특징으로 하는 자기 기록 매체.2. The magnetic recording according to claim 1, wherein the filler is selected from the group consisting of benzoguanamine formaldehyde condensate, benzoguanamine melamine formaldehyde condensate or melamine formaldehyde condensate. media. 자성층과 백코오트층을 도포하는 순서에는 관계없이 연속적으로, 강자성 분말, 결합제수지, 연마제, 대전방지제 및 분산제 등을 유기용매와 함께 혼합, 분산시켜 제조된 자성도료를 비자성 지지체 필름의 한쪽면에 도포한 후에 건조시켜 자성층을 형성하고, 상비중 0.7g/cc미만인 충전제와 카본블랙을 결합제 수지용액에 분산시켜 제조한 백코오트층 형성용 도료를 비자성 지지체의 다른면에 도포하여 백코오트층을 형성시킨 다음, 자성층과 백코오트층을 각각 건조하고 카렌다링, 경화처리 및 슬릿팅 공정을 가지게 하는 것으로 이루어지는 자기 기록 매체의 제조방법.Regardless of the order in which the magnetic layer and the back coat layer are applied, the magnetic coating prepared by mixing and dispersing the ferromagnetic powder, the binder resin, the abrasive, the antistatic agent and the dispersant together with the organic solvent is continuously applied to one side of the nonmagnetic support film. After coating, it is dried to form a magnetic layer, and a back coat layer forming paint prepared by dispersing a filler having less than 0.7 g / cc in normal ratio and carbon black in a binder resin solution is applied to the other side of the nonmagnetic support to form a back coat layer. And then drying the magnetic layer and the back coat layer, respectively, to have calendaring, curing treatment, and slitting processes. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920008744A 1992-05-22 1992-05-22 Magnetic recording medium and manufacturing method thereof KR930023932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920008744A KR930023932A (en) 1992-05-22 1992-05-22 Magnetic recording medium and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920008744A KR930023932A (en) 1992-05-22 1992-05-22 Magnetic recording medium and manufacturing method thereof

Publications (1)

Publication Number Publication Date
KR930023932A true KR930023932A (en) 1993-12-21

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KR1019920008744A KR930023932A (en) 1992-05-22 1992-05-22 Magnetic recording medium and manufacturing method thereof

Country Status (1)

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KR (1) KR930023932A (en)

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