| 摘要 |
PURPOSE:To obtain a film thickness required for a prescribed residual magnetic flux efficiently in the state with increased holding force, by introducing a gas mainly composed of oxygen near the location where vapor deposition is made, in vapor depositing a ferromagnetic substance on a base made of high-molecular molded material. CONSTITUTION:A vacuum tank 1 is drafted with a vacuum pump 13, a gas composed of oxygen as the major content is continuously introduced from an introducing hole 15 or 16, and vapor flow from an evaporating source 3 is contacted at the side region of a make 12 (not always required) while moving a base 8 made of a high-molecular component and a coating film of a ferromagnetic substance is formed on the base 8. Thus, the film thickness required for residual magnetic flux required can be obtained efficiently in the state of increased holding force. |
