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JPH07303980A
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Method and device for laser beam machining
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JPH06280053A
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Method and device for finely working ferrite
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JPS63292043A
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Apparatus for analyzing film thickness and composition at the same time
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JPS63278692A
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Automatic focusing mechanism in laser beam machine
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US4751779A
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Method of producing a core for magnetic head
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JPS6345387A
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Production of core for magnetic head
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JPS6367964A
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Method and device for superposing and synthesizing images
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JPS6328170A
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Method and device for modulating picture signal in picture scanning recorder
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JPS6265081A
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Graduated density compression method and apparatus
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JPS6191661A
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Method and device for forming halftone film varying in density continuously
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