发明授权
- 专利标题: Coating method for magnetic recording medium
- 专利标题(中): 磁记录介质涂层方法
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申请号: US714426申请日: 1991-06-12
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公开(公告)号: US5132132A公开(公告)日: 1992-07-21
- 发明人: Masaru Watanabe , Satoshi Hirose
- 申请人: Masaru Watanabe , Satoshi Hirose
- 申请人地址: JPX Osaka
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPX2-155953 19900614
- 主分类号: B05D1/26
- IPC分类号: B05D1/26 ; B05D5/12 ; G11B5/842 ; G11B5/848
摘要:
An apparatus for coating on a support a first magnetic coating solution so as to form a lower layer on the support continuously travelling and then coating a second magnetic coating solution on the first magnetic coating solution, which is in a non-dried state, so as to form an upper layer thereon to thereby produce a two-layer type magnetic recording medium. The apparatus comprises a first die for coating the first magnetic coating solution which includes first and second lip portions, the second lip portion having a top surface curved. The apparatus further comprises a second die for coating the second magnetic coating solution which includes first and second lip portions, the second lip portion similarly having a top surface curved. The first lip portion of each of said first and second dies has an edge A and the second lip portion has at both ends of the curved top surface edges B and C. The edge B is formed to be in confronting relation to the edge A of the first lip portion. The edge A of the first lip portion is arranged to be substantially on a tangential line of the edge B of the second lip portion and the support is arranged to be travelled so as to approach each die at a loading angle to be substantially parallel to the tangential line of the edge B of the second lip portion and to be separated therefrom at an unloading angle to be substantially parallel to an tangential line of the edge C of said second lip portion.
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