MANUFACTURING METHOD OF OPTICAL DISK

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of an optical disk by which a coating film having uniform film thickness can be obtained.

SOLUTION: The manufacturing method of the optical disk includes: a step of providing a projecting part 2 having an inclined outer circumferential surface at a part on the outer side of a hole part 1a in a radial direction and an inner side of a recording region in an optical disk substrate 1 having the hole part 1a at a center part thereof; a step of supplying a curable resin before being cured having fluidity along the outer circumferential surface of the projecting part 2 while the optical disk substrate 1 is rotated at low speed; a step of rotating the optical disk substrate 1 at high speed and spreading the curable resin before being cured toward outer side in the radial direction on the disk substrate 1 in a film shape to form a coated film; and a step of curing the coated film formed by spreading to form the coating film 3 made of the curable resin.

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