公开(公告)号：US06169721A

公开(公告)日：2001-01-02

申请号：US09140545

申请日：1998-08-26

申请人： Toshihiko Takishita ,  Shinichi Hanzawa ,  Shigenori Murakami ,  Atsushi Kondo ,  Ayumi Mitsumori ,  Miki Kusama ,  Makoto Matsukawa

发明人： Toshihiko Takishita ,  Shinichi Hanzawa ,  Shigenori Murakami ,  Atsushi Kondo ,  Ayumi Mitsumori ,  Miki Kusama ,  Makoto Matsukawa

IPC分类号： G11B724

CPC分类号： G11B7/259 ,  G11B7/007 ,  G11B7/24 ,  G11B7/244 ,  G11B7/246 ,  G11B7/249 ,  G11B7/256 ,  G11B7/2595 ,  Y10T428/21

摘要： An optical recording medium has a substrate having an annular grooves, a recording layer including an organic coloring matter and formed on the substrate, and a metallic reflection layer. The recording layer has a thickness so as to have an absorbance between 0.65 and 0.75. Information is recorded in the recording layer by a laser beam having a wavelength between 600 and 700 nm, using an objective lens having a numerical aperture between 0.55 and 0.70.

摘要翻译： 光记录媒体具有环状槽的基板，包含有机色素的记录层，形成在基板上，金属反射层。 记录层的厚度为0.65〜0.75的吸光度。 使用具有数值孔径在0.55和0.70之间的物镜，通过具有在600和700nm之间的波长的激光束将信息记录在记录层中。