Apparatus for depositing a thin film on a data recording disk
First Claim
1. An apparatus for depositing a protective film on top of a magnetic film that has already been deposited as a data recording layer on a surface of a data recording disk substrate, comprising:
- means for forming a magnetic film as a data recording layer on a data recording disk at a magnetic film deposition temperature;
means for forming a protective film on top of the magnetic film at a protective film deposition temperature, which is higher than the magnetic film deposition temperature;
an intermediate heating chamber which is equipped with a heating mechanism, the intermediate heating chamber is provided between the magnetic film forming means, in which the magnetic film is deposited on the surface of the substrate, and the protective film forming means in which the protective film is deposited and laminated on top of the magnetic film, and airtight connections are made between the magnetic film forming means and the intermediate heating chamber and between the intermediate heating chamber and the protective film forming means, whereby the magnetic film forming, the intermediate heating, and the protective film forming can be performed successively without exposing the substrate to the atmosphere.
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Accused Products
Abstract
An apparatus for depositing a protective film on a data recording disk, including the steps of depositing a magnetic film layer as a data recording layer on a surface of a substrate while the substrate is at a magnetic film deposition temperature; heating the substrate with the magnetic film layer thereon to a protective film deposition temperature; and depositing a protective film on the magnetic film layer while the substrate is at the protective film deposition layer; wherein the protective film deposition temperature is higher than the magnetic film deposition temperature.
39 Citations
6 Claims
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1. An apparatus for depositing a protective film on top of a magnetic film that has already been deposited as a data recording layer on a surface of a data recording disk substrate, comprising:
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means for forming a magnetic film as a data recording layer on a data recording disk at a magnetic film deposition temperature;
means for forming a protective film on top of the magnetic film at a protective film deposition temperature, which is higher than the magnetic film deposition temperature;
an intermediate heating chamber which is equipped with a heating mechanism, the intermediate heating chamber is provided between the magnetic film forming means, in which the magnetic film is deposited on the surface of the substrate, and the protective film forming means in which the protective film is deposited and laminated on top of the magnetic film, and airtight connections are made between the magnetic film forming means and the intermediate heating chamber and between the intermediate heating chamber and the protective film forming means, whereby the magnetic film forming, the intermediate heating, and the protective film forming can be performed successively without exposing the substrate to the atmosphere. - View Dependent Claims (2, 3, 4)
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5. An apparatus for depositing a protective film on top of a magnetic film that has already been deposited as a data recording layer on a surface of a data recording disk substrate, comprising:
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a magnetic film deposition chamber in which a magnetic film is formed as a data recording layer on a data recording disk at a magnetic film deposition temperature;
a protective film deposition chamber in which a protective film is formed on top of the magnetic film at a protective film deposition temperature, the protective film deposition temperature is higher than the magnetic film deposition temperature; and
a heater for heating the data recording disk substrate to the protective film deposition temperature before forming the protective film, wherein the heater is located between the magnetic film deposition chamber and the protective film deposition chamber.
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6. An apparatus for depositing a protective film on top of a magnetic film that has already been deposited as a data recording layer on a surface of a data recording disk substrate, comprising:
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a sputtering chamber in which a magnetic film is formed as a data recording layer on a data recording disk at a magnetic film deposition temperature;
a chemical vapor deposition chamber in which a protective film is formed on top of the magnetic film at a protective film deposition temperature, the protective film deposition temperature is higher than the magnetic film deposition temperature; and
a heater for heating the data recording disk substrate to the protective film deposition temperature before forming the protective film, wherein the heater is located between the magnetic film deposition chamber and the protective film deposition chamber.
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Specification