KR880008249A - Back Coating Body Used in Magnetic Recording Media for Video - Google Patents

Back Coating Body Used in Magnetic Recording Media for Video Download PDF

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Publication number
KR880008249A
KR880008249A KR860011581A KR860011581A KR880008249A KR 880008249 A KR880008249 A KR 880008249A KR 860011581 A KR860011581 A KR 860011581A KR 860011581 A KR860011581 A KR 860011581A KR 880008249 A KR880008249 A KR 880008249A
Authority
KR
South Korea
Prior art keywords
video
magnetic recording
back coating
recording media
body used
Prior art date
Application number
KR860011581A
Other languages
Korean (ko)
Other versions
KR900004311B1 (en
Inventor
박종민
고종호
Original Assignee
이상철
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 이상철, 주식회사 코오롱 filed Critical 이상철
Priority to KR1019860011581A priority Critical patent/KR900004311B1/en
Publication of KR880008249A publication Critical patent/KR880008249A/en
Application granted granted Critical
Publication of KR900004311B1 publication Critical patent/KR900004311B1/en

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
    • 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
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
    • G11B5/7021—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing a polyurethane or a polyisocyanate
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate

Landscapes

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

Abstract

내용 없음.No content.

Description

비디오용 자기기록 매체에 사용되는 백코팅체Back Coating Body Used in Magnetic Recording Media for Video

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

Claims (2)

비디오용 자기기록 매체의 기본지지체인 폴리에스테르 필름에 도포시키는 백 코팅제에 있어서, 비자성체인 무기물질을 분산시키기 위하여 유리 전이온도가 0℃미만인 폴리우레탄수지(1)와 유리 전이온도가 0℃ 이상인 폴리우레탄수지(2)를 중량비로 70:30 내지 50:50으로 혼합된 결합제를 첨가하고 여기에다 상기 결합제에 대하여 경화제를 7 내지 13중량%로 혼합시켜 된 것을 특징으로 하는 비디오용 자기기록 매체에 사용되는 백코팅제.A back coating material applied to a polyester film, which is a basic support for a magnetic recording medium for video, wherein the polyurethane resin (1) having a glass transition temperature of less than 0 ° C. and a glass transition temperature of 0 ° C. or more are used to disperse inorganic materials, which are nonmagnetic materials. A polyurethane resin (2) is used in a magnetic recording medium for video, characterized in that a binder mixed in a weight ratio of 70:30 to 50:50 is added and a curing agent is mixed in an amount of 7 to 13% by weight based on the binder. Back coating agent. 제1항에 있어서, 결합제는 무기물질에 대하여 중량비로 70 내지 80중량%를 첨가시켜서 됨을 특징으로 하는 것.The method of claim 1, wherein the binder is characterized in that by adding 70 to 80% by weight based on the weight of the inorganic material. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019860011581A 1986-12-30 1986-12-30 Back coating agent using magnetic recording medium for vtr KR900004311B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019860011581A KR900004311B1 (en) 1986-12-30 1986-12-30 Back coating agent using magnetic recording medium for vtr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019860011581A KR900004311B1 (en) 1986-12-30 1986-12-30 Back coating agent using magnetic recording medium for vtr

Publications (2)

Publication Number Publication Date
KR880008249A true KR880008249A (en) 1988-08-30
KR900004311B1 KR900004311B1 (en) 1990-06-20

Family

ID=19254587

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860011581A KR900004311B1 (en) 1986-12-30 1986-12-30 Back coating agent using magnetic recording medium for vtr

Country Status (1)

Country Link
KR (1) KR900004311B1 (en)

Also Published As

Publication number Publication date
KR900004311B1 (en) 1990-06-20

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