Patent ID: 7672215
Filing Date: 2010-03-02
Classification: G11B

Abstract:
1. An optical recording medium comprising a first information recording body formed by laminating at least a first dye containing recording layer containing a first dye and a semitransparent reflective layer in this order on a first substrate having a guide groove and a second information recording body formed by laminating at least a reflective layer and a second dye containing recording layer containing a second dye in this order on a second substrate having a guide groove, said optical recording medium being formed by bonding together said first information recording body and said second information recording body through an optically transparent adhesive layer, with opposite sides to said substrates of said first information recording body and said second information recording body facing to each other, in which information is recorded or read by irradiating a light beam from said first substrate's side; wherein said second dye containing recording layer has a thick film portion and a thin film portion, and said light beam is irradiated to said thin film portion of said second dye containing recording layer to record or read information in or from said thin film portion.