POLISHING CARRIER, METHOD FOR POLISHING GLASS SUBSTRATE FOR MAGNETIC RECORDING MEDIUM, AND METHOD FOR MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC RECORDING MEDIUM

PROBLEM TO BE SOLVED: To provide a polishing carrier that can prevent an upper surface plate from sticking to a polishing pad, without causing a damage to the polishing pad during a polishing process.SOLUTION: The polishing carrier is used for polishing a glass substrate for magnetic recording mediu...

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Bibliographische Detailangaben
Hauptverfasser:	MISHIRO HITOSHI, OTSUKA HARUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	DRESSING OR CONDITIONING OF ABRADING SURFACES FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GRINDING INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING PERFORMING OPERATIONS PHYSICS POLISHING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a polishing carrier that can prevent an upper surface plate from sticking to a polishing pad, without causing a damage to the polishing pad during a polishing process.SOLUTION: The polishing carrier is used for polishing a glass substrate for magnetic recording medium, wherein the polishing carrier has two main flat surfaces of a first surface and a second surface, and the surface roughness (Ra) of a first surface is larger than that of a second surface, with the difference in 3-15 μm. A method for polishing the glass substrate for magnetic recording medium, and a method for manufacturing the glass substrate for magnetic recording medium, are also provided.