| 摘要 |
<p>MANUFACTURING METHOD AND MANUFACTURING APPARATUS OF GLASS SUBSTRATE FOR MAGNETIC DISC AND MANUFACTURING METHOD OF MAGNETIC DISC A bottom wall part 19 of a holder main body 17 of a work holder is attached onto a table 5, a plurality of glass substrates 2 are laminated on the bottom wall part 19, a shaft 12 is provided perpendicularly to the bottom wall part 19 so that the shaft penetrates a communicating inner hole of the laminated glass substrates 2 to position the glass substrates 2 on the bottom wall part 19, while the positioned glass substrates 2 are pressed from above by a pressing portion 22 of a holder cover 18 of the work holder, the shaft 12 is removed from the communicating inner hole of the glass substrates 2, and a polishing brush is inserted into the inner hole for polishing.</p> |
