发明名称 |
Method of preparing kneaded mixture for magnetic coating material |
摘要 |
A method of preparing a kneaded mixture for a magnetic coating material comprises a kneading start process and a continuous kneading process. In the kneading start process, a low-viscosity composition, which is composed of magnetic layer forming materials containing ferromagnetic grains and a binder, and a solvent, is introduced into a kneading vessel of a two-shaft continuous kneading and mixing machine, and kneading is started. In the continuous kneading process, after the start of the kneading, a high-viscosity composition, in which a solvent amount is smaller by at least 7 wt % than the solvent amount in the low-viscosity composition used in the kneading start process, is continously introduced into the kneading vessel, and the kneading is continued while high shearing force is being given to the high-viscosity composition.
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申请公布号 |
US4946615(A) |
申请公布日期 |
1990.08.07 |
申请号 |
US19880259655 |
申请日期 |
1988.10.19 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
MIZUNO, CHIAKI;KIYAMA, MASATOSHI;KOMI, TAKAO;OGAWA, HIROSHI;FUNABASHI, SHINICHI |
分类号 |
G11B5/84;G11B5/842;G11B5/848 |
主分类号 |
G11B5/84 |
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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