Magnetic recording medium
专利汇可以提供Magnetic recording medium专利检索，专利查询，专利分析的服务。并且PURPOSE: To improve the durability of magnetic recording media, by providing the protecting layer consisting of the vinyl chloride-vinylpropionic acid copolymer, polyester resin and polyisocyanate of low molecular weight on the surface of magnetic layer.
CONSTITUTION: On the mold release layer 2 formed on the film 1 such as polyester, the protecting layer paint mixing a given amount of vinyl chloride-vinylpropionic acid copolymer, polyester resin such as branched polyester containing hydroxyl radical and plyisocyanate of low molecular weight is coated, and the protecting layer 3 is formed with drying. The magnetic layer 4 is formed on the protecting layer 4 to constitute the copying magnetic sheet, the magnetic substance layer 4 is laminated on the board 5 such as polyvinyl chloride so that it is contact with the board 5, and after pressing, the film 1 is peeled. Thus, the strength of the protecting layer 3 is increased, the elasticity is at suitable degree, and the magnetic recording media durable for a long time can be obtained.
COPYRIGHT: (C)1980,JPO&Japio，下面是Magnetic recording medium专利的具体信息内容。
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