发明名称 |
Method for producing a magnetic recording medium including wet orientation without agglomeration of magnetic particles |
摘要 |
A method for producing a magnetic recording medium which results in the effective oblique orientation of magnetic fine particles without aggregation of the particles. The method results in a magnetic recording medium having an upper magnetic layer containing needle-shaped, granular, or plate-like magnetic particles, and at least one lower nonmagnetic layer formed on a nonmagnetic support so that the magnetic particles have the maximum degree of orientation in an oblique or perpendicular direction with respect to a surface of the support. The oblique or perpendicular orientation is performed in the wet state of a magnetic layer and in the condition in which the amount of the solvent residue in the upper magnetic layer is 40 to 80% after the upper magnetic layer and the lower nonmagnetic layer are applied sequentially or simultaneously to form a multilayer. The upper magnetic layer is formed so as to be thinner than the lower nonmagnetic layer and subjected to horizontal orientation with a plane of the surface of the support.
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申请公布号 |
US5633050(A) |
申请公布日期 |
1997.05.27 |
申请号 |
US19950500556 |
申请日期 |
1995.07.11 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
SHIBATA, NORIO;TAKAHASHI, SHINSUKE |
分类号 |
G11B5/70;G11B5/738;G11B5/845;G11B5/852;(IPC1-7):H01F1/00 |
主分类号 |
G11B5/70 |
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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