| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a disk of good appearance by preventing an adhesive from flowing into the inner circumferential side or the grooves when disk base boards are stuck together. SOLUTION: A disk substrate B is molded to form a concave part B4 on the boundary part between an inner circumferential side signal non-transfer area B3 and a signal transfer area B2 on the surface B1 of the side where the disk substrate B has the signal transfer area; a disk substrate A is molded to form a convex part A4 approximately at the same position as the convex part B4 on one surface A3 of the disk substrate A having no signal transfer area; thereafter, an adhesive C is supplied to the outer circumferential area from the concave part B4 of the disk substrate B having the signal transfer area or from the convex part A4 of the disk substrate A4 having no signal transfer area; and thus the disk substrates are stuck together so that the convex part A4 is fitted in the concave part B4. COPYRIGHT: (C)2004,JPO&NCIPI
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