Coating processes – Magnetic base or coating – Magnetic coating
Patent
1995-07-07
1999-01-12
Talbot, Brian K.
Coating processes
Magnetic base or coating
Magnetic coating
427250, 427294, 427561, C23C 1600, B05D 300
Patent
active
058584560
ABSTRACT:
The invention relates to a method of piece by piece metal coating of thermally sensitive objects, for example optical discs. The objects are coated by being located particularly close to an evaporation source for evaporated metal. The evaporation source constitutes a melt enclosed in a crucible which is heated by inductive means. The distance between the object and the melt is kept to a few centimeters and the exposure time is kept to a few seconds in order to coat the objects without causing damage. The method includes the steps of providing an evaporation chamber containing an evaporation source of metal, reducing the pressure in the evaporation chamber, and placing the object in the evaporation chamber so that a surface of the object is opposed to a surface of the source of metal and is separated from the surface of the source of metal by a distance which is the same as or less than a dimension of the surface of the object to be coated.
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Powell et al., "Vapor Deposition", The Electrochemical Society, Inc., pp. 241, 584 and 585, Jan. 1966.
Applied Vacuum Technologies 1 AB
Talbot Brian K.
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