| Patent Number |
Title Of Patent |
Date Issued |
| 7539121 |
Optical recording medium and process for producing the same |
May 26, 2009 |
| An optical recording medium is provided with: a first substrate having first pits on one face thereof; a first reflective layer that is formed on the face bearing the first pits of the first substrate in a manner so as to reflect lands and recesses of the first pits; a second substrate |
| 7361456 |
Method of manufacturing master disk, apparatus of manufacturing master disk, method of detecting |
April 22, 2008 |
| A method is provided for manufacturing a master disk in which there is precise feeding accuracy of the master disk by using a horizontally moving device which moves with curvature. The method of manufacturing a master disk includes the steps of rotating a resist master disk; moving t |
| 7315508 |
Multi-layer optical disk and method of producing multi-layer optical disk |
January 1, 2008 |
| A multilayer optical disk including a plurality of information storage layers to/from which information is recorded and/or reproduced by an optical head. The plurality of information storage layers are stacked through intermediate layers and each information storage layer includes a |
| 5756265 |
Multilayer optical disc and method of making same |
May 26, 1998 |
| A method of making a multilayer optical disc of a type formed by laminating a plurality of signal layers each having a spiral or concentric pattern of a series of pits so that information can be read by irradiating any one of the signal layers with a playback laser from a surface of a su |
