发明名称 TRANSFERRABLE MAGNETIC SHEET
摘要 PURPOSE:To obtain a sheet which permits formation of magnetic recording media having superior appearance and abrasion resistance by forming a magnetic layer on a release layer provided on a substrate by way of a protecting layer contg. tetrafluoroethylene telomer. CONSTITUTION:A paint consisting of soln. of a thermoplastic resin (e.g.; polymethyl methacrylate, nitrocellulose, etc.) is applied on a substrate 1 and is dried to form a release layer 2 having about 0.2-0.8mum thickness. Next, a protecting layer paint contg. tetrafluoroethylene telomer (preferably the one having about 0.3- 10mum grain sizes and about <=10,000mol. wt., e.g.; ''Vydax AR '' made by du Pont de Nemours, E.I. & Co.) and a binder is painted thereon and is dried to form a protecting layer 3 having about 0.2-1.4mum thickness. Next, a magnetic layer 4 consisting of magnetic powder and a binder is formed thereon, whereby a transferrable magnetic sheet is obtained.
申请公布号 JPS56159835(A) 申请公布日期 1981.12.09
申请号 JP19800063800 申请日期 1980.05.14
申请人 HITACHI MAXELL 发明人 OGOSHI NOBUAKI;KARASHIMA KAZUTO;YAMAGUCHI ATSUTAKA;WATAYA SEIJI;AKAHA NAOTO
分类号 G11B5/72;C09D5/23;G11B5/725;G11B5/80;G11B5/855 主分类号 G11B5/72
代理机构 代理人
主权项
地址