| 摘要 |
PROBLEM TO BE SOLVED: To thicken the thickness of a coating film formed on an etched inner peripheral end surface of glass substrate for a magnetic disk. SOLUTION: The method of manufacturing the glass substrate for magnetic disk comprises a process for etching the inner peripheral end surface of the disk-shaped glass substrate having a circular hole at its center, applying a liquid containing an organic polysilazane compound on the inner peripheral end surface and baking the resultant liquid. The compound has structural units of -Si(R<SP>1</SP>)(R<SP>2</SP>)-(NH)- and -Si(R<SP>3</SP>)(R<SP>4</SP>)-O-, each of R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP>is a group selected from the group consisting of an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkylamino group, an alkylsilyl group and an alkoxy group or hydrogen and either one or more of R<SP>1</SP>and R<SP>2</SP>and either one or more of R<SP>3</SP>and R<SP>4</SP>are groups selected from the above group. COPYRIGHT: (C)2007,JPO&INPIT
|
