发明名称 |
Magnetic disk coating method and apparatus |
摘要 |
A rigid magnetic disk substrate is spin coated using a closely confining, stationary air barrier adjacent the surface being coated. The coating is applied through a slotted opening in the air barrier which is progressively closed as the coating is applied and completely sealed during the spin-off operation. During the application of the coating, the air barrier is positioned approximately 0.15 inch from the disk substrate surface and prior to spin-off, the barrier is moved to a position 0.025 inch from the coated surface. Further, during the high speed spin-off cycle a high kinematic viscosity gas, such as helium, is introduced into the space between the barrier and the coated surface to establish a laminar flow condition and eliminate spoking of the coated material.
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申请公布号 |
US4587139(A) |
申请公布日期 |
1986.05.06 |
申请号 |
US19840685087 |
申请日期 |
1984.12.21 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
HAGAN, JAMES A.;MALOY, JAMES E.;WILKE, MYRON A. W. |
分类号 |
B05C11/08;B05D1/00;B05D1/40;G11B5/842;(IPC1-7):B05D5/12 |
主分类号 |
B05C11/08 |
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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