US 12,308,061 B2
Optical recording medium
Minoru Kikuchi, Tokyo (JP); and Yoko Sekiguchi, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 18/578,102
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Mar. 23, 2022, PCT No. PCT/JP2022/013523
§ 371(c)(1), (2) Date Jan. 10, 2024,
PCT Pub. No. WO2023/007838, PCT Pub. Date Feb. 2, 2023.
Claims priority of application No. 2021-124335 (JP), filed on Jul. 29, 2021.
Prior Publication US 2024/0339129 A1, Oct. 10, 2024
Int. Cl. G11B 7/007 (2006.01); G11B 7/24041 (2013.01); G11B 7/2534 (2013.01); G11B 7/2542 (2013.01); G11B 7/26 (2006.01)
CPC G11B 7/24041 (2013.01) [G11B 7/2534 (2013.01); G11B 7/2542 (2013.01); G11B 7/26 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An optical recording medium, comprising:
an optical recording medium main body that has a first surface and a second surface; and
a first convex structure layer on the first surface, wherein
the first convex structure layer has a surface provided with a plurality of first convexities, and includes first particles and a first resin material,
the plurality of first convexities is formed by a part of the first particles that are included in the first convex structure layer, the part of the first particles protruding from the surface of the first convex structure layer, and
an average contact angle of triolein with respect to the surface of the first convex structure layer is 60.0 degrees or more.