US 12,119,034 B2
Method of producing multilayer optical recording medium and device for producing multilayer optical recording medium
Minoru Kikuchi, Tokyo (JP); and Takeshi Yoshida, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 18/551,479
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Feb. 9, 2022, PCT No. PCT/JP2022/005005
§ 371(c)(1), (2) Date Sep. 20, 2023,
PCT Pub. No. WO2022/209323, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 2021-059340 (JP), filed on Mar. 31, 2021.
Prior Publication US 2024/0161779 A1, May 16, 2024
Int. Cl. G11B 7/24038 (2013.01); G11B 7/24027 (2013.01); G11B 7/26 (2006.01)
CPC G11B 7/24038 (2013.01) [G11B 7/24027 (2013.01); G11B 7/26 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of producing a multilayer optical recording medium, comprising:
when a UV curable adhesive is interposed between a first disk and a second disk, the first disk and the second disk are rotated, and
when at least one of vicinities of inner circumferential edges and vicinities of outer circumferential edges of the first disk and the second disk is masked with a mask member, emitting ultraviolet rays for preliminarily curing the UV curable adhesive from a side of a light emission surface of the first disk during rotation.