Patent ID: 7203155
Filing Date: 2007-04-10
Classification: G11B

Abstract:
1. An optical disc comprising: a first substrate having a first data layer; a transparent reflection layer formed on the first data layer of the first substrate; a second substrate having a second data layer to which is disposed a recordable film for recording and reproducing information; and an adhesive layer for bonding the first substrate and the second substrate with the first data layer and the second data layer facing each other, wherein said optical disc is configured so that information recorded to the first data layer and the second data layer is read through the first substrate, the first data layer and the second data layer each have a separate user data area for recording and reading information, a learning area for test recording, and a read-only area for reading information, and the learning area of the first data layer has a specific part that is provided with a recording-prohibited area where writing data is prohibited.