发明名称 |
Method for forming magnetic gap of video signal erasure head, erasure head, and video recorder having the same |
摘要 |
The invention provides a simple method for forming a gap for an erasure head to improve the quality of this erasure head. A front core 3 constituting an erasure head H includes in configuration two magnetic substances 5 and a magnetic gap 6 made of a non-magnetic substance arranged between these two magnetic substances 5, in which the gap 6 made of the non-magnetic substance is bonded by adhesion or welding between those two magnetic substances 5. By this method, the gap can be formed free of an air bubble, with good mass-productivity, and inexpensively as compared to a prior art method of forming a gap by glass bonding.
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申请公布号 |
US2002001156(A1) |
申请公布日期 |
2002.01.03 |
申请号 |
US20010847537 |
申请日期 |
2001.05.01 |
申请人 |
MATSUI KIYOSHI;UMAJI YOSHINOBU |
发明人 |
MATSUI KIYOSHI;UMAJI YOSHINOBU |
分类号 |
G11B5/127;G11B5/23;(IPC1-7):G11B27/00;G11B5/325 |
主分类号 |
G11B5/127 |
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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