| US 7,586,830 B2 | ||
| Magnetic recording medium and manufacturing method therefor | ||
| Nobuhiro Yasui, Kawasaki (Japan); and Toru Den, Tokyo (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Mar. 20, 2006, as Appl. No. 11/378,347. | ||
| Claims priority of application No. 2005-108666 (JP), filed on Apr. 05, 2005. | ||
| Prior Publication US 2006/0222905 A1, Oct. 05, 2006 | ||
| Int. Cl. G11B 7/00 (2006.01) | ||
| U.S. Cl. 369—275.1 [369/283; 369/44.14] | 14 Claims |
| 1. A magnetic recording medium having a recording layer on a member with a concave-convex portion, wherein the recording layer has cylindrical magnetic particles, the recording layer is provided on the concave and convex portions, and the recording layers on the concave and convex portions are different in magnetic properties from each other. |