METHOD OF MANUFACTURING GLASS BLANK FOR MAGNETIC RECORDING MEDIUM GLASS SUBSTRATE, METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM GLASS SUBSTRATE, AND METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM

A METHOD OF MANUFACTURING A GLASS BLANK FOR A MAGNETIC RECORDING MEDIUM GLASS SUBSTRATE IN WHICH, AFTER A PAIR OF PRESS MOLDS PLACED SO AS TO BE OPPOSED TO EACH OTHER IN A HORIZONTAL DIRECTION WITH PRESS-MOLDING SURFACES (52A) THEREOF AND THE TEMPERATURES OF THE PRESS-MOLDING SURFACES BEING SUBSTANT...

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Hauptverfasser:	OSAKABE,KINOBU, MOTOHASHI, TAKAO, MURAKAMI, AKIRA, SUGIYAMA, NOBUHIRO, OSAWA, MAKOTO, SATOU,TAKASHI, TANINO, HIDEKAZU, ISONO, HIDEKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GLASS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL PERFORMING OPERATIONS PHYSICS PRESSES PRESSES IN GENERAL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING
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Zusammenfassung:	A METHOD OF MANUFACTURING A GLASS BLANK FOR A MAGNETIC RECORDING MEDIUM GLASS SUBSTRATE IN WHICH, AFTER A PAIR OF PRESS MOLDS PLACED SO AS TO BE OPPOSED TO EACH OTHER IN A HORIZONTAL DIRECTION WITH PRESS-MOLDING SURFACES (52A) THEREOF AND THE TEMPERATURES OF THE PRESS-MOLDING SURFACES BEING SUBSTANTIALLY THE SAME ARE BROUGHT INTO CONTACT WITH A MOLTEN GLASS GOB (24) SUBSTANTIALLY AT THE SAME TIME, PRESS MOLDING IS CARRIED OUT TO PRODUCE PLATE GLASS AND THE PLATE GLASS CONTINUES TO BE PRESSED WITH THE PAIR OF MOLDS, AND THEN, WHEN THE PLATE GLASS IS TAKEN OUT, THE DURATION TIME OF PRESSING THE PLATE GLASS IS CONTROLLED SO THAT THE FLATNESS OF THE GLASS BLANK IS 10 µM OR LESS, AND A METHOD OF MANUFACTURING A MAGNETIC RECORDING MEDIUM GLASS SUBSTRATE, A METHOD OF MANUFACTURING A MAGNETIC RECORDING MEDIUM, AND AN APPARATUS FOR MANUFACTURING A GLASS BLANK FOR A MAGNETIC RECORDING MEDIUM GLASS SUBSTRATE USING THE SAME. THE MOST ILLUSTRATIVE DRAWING: