Method for manufacturing magnetic recording media
AssigneeFuji Photo Film Co., Ltd.
InventorsKazunori Komatsu, Mikio Tomaru
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Abstract
A method for manufacturing a magnetic recording medium includes continuously conveying a support, applying a magnetic solution to the support to form a magnetic layer thereon, and subjecting the magnetic layer thus formed on the support to orientation and drying. The magnetic solution is prepared by dispersing magnetic particles therein such that the magnetization of the magnetic solution provided by a magnetic field having a predetermined field strength being applied thereto for one minute satisfies a relationship: M.sub.H /M.sub.S >2H/Hc, where M.sub.S is the saturation magnetization of the magnetic solution, Hc is the coercive force (Oe) of the ferromagnetic particles in the magnetic solution, and Hc/5.gtoreq.H.gtoreq.Hc/50.
Claims11
A method for manufacturing a magnetic recording medium, comprising the steps of:
- preparing a magnetic solution by dispersing ferromagnetic particles therein such that the magnetization M.sub.H of said magnetic solution provided by a magnetic field H (Oe) having a predetermined field strength being applied thereto for one minute satisfies the following relation:
- M.sub.H /M.sub.S >2H/Hc
- where M.sub.S is the saturation magnetization of said magnetic solution, Hc is the coercive force (Oe) of the ferromagnetic particles in said magnetic solution, and Hc/5.gtoreq.H.gtoreq.Hc/50;
- continuously conveying a support;
- applying said magnetic solution to said support being continuously conveyed to form a magnetic layer thereon;
- and
- subjecting said magnetic layer thus formed on said support to magnetic orientation treatment and drying.
Dependencies are inferred from the claim text.