发明名称 |
Process of producing a magnetic recording element |
摘要 |
A process of producing a magnetic recording element comprising a non-magnetic support having provided thereon a subbing layer and further having provided thereon a magnetic layer comprising a ferromagnetic powder and a binder, in which the non-magnetic support is a biaxially stretched polyester and the subbing layer is formed by coating a coating solution having a solids concentration of about 0.8 to about 5 wt% comprising an amorphous linear saturated polyester resin containing an aromatic dicarboxylic acid, 10 to 50 wt% of a vinylidene chloride addition polymerizable nitrile copolymer based on the polyester resin and an organic solvent mainly composed of methyl ethyl ketone, which comprises coating the subbing solution at a temperature of about 100 DEG C. or below to provide a dry thickness of about 0.03 to about 2.0 mu m, drying the coated layer and then coating the magnetic recording layer thereon.
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申请公布号 |
US4183976(A) |
申请公布日期 |
1980.01.15 |
申请号 |
US19780870146 |
申请日期 |
1978.01.17 |
申请人 |
FUJI PHOTO FILM CO LTD |
发明人 |
KITAMOTO, TATSUJI;YAMADA, YASUYUKI |
分类号 |
G11B5/738;(IPC1-7):H01F10/00 |
主分类号 |
G11B5/738 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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