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AssigneeFuji Xerox Co., Ltd., Tokyo, Japan
InventorsJiro Minabe, Tatsuya Maruyama, Katsunori Kawano, Shin Yasuda
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In the present invention, a photosensitive layer of an optical recording medium includes a photo-responsive high-molecular compound comprising a photo-responsive group (e.g., an azobenzene derivative) which is geometrically isomerized by light radiation, and a liquid crystal linear mesogen group (e.g., a biphenyl derivative), wherein the photo-responsive group and the linear mesogen group are respectively bonded as side chains. The invention provides an optical recording medium enabling large scale recording by making the photosensitive layer thick without impairing recording characteristics. The photo-responsive high-molecular compound preferably comprises an aromatic ring on a main chain. Further, the photo-responsive high-molecular compound preferably comprises a structural unit which is capable of forming a liquid-crystalline or crystalline polymer and a structural unit which is capable of forming an amorphous polymer.
A photo-responsive high-molecular compound comprising an aromatic ring in a main chain, a photo-responsive group that is geometrically isomerized by light radiation, and a liquid crystal linear mesogen group, wherein the photo-responsive group and the liquid crystal linear mesogen group are respectively bonded with the aromatic ring as side chains.
An optical recording medium provided with a photosensitive layer containing a photo-responsive high-molecular compound comprising an aromatic ring in a main chain, a photo-responsive group that is geometrically isomerized by light radiation and a liquid crystal linear mesogen group, the photo-responsive group and the liquid crystal linear mesogen group being respectively bonded with the aromatic ring as side chains, wherein information is recorded in the photosensitive layer by utilizing at least one of a change in absorption, a change in refractive index, and a change in shape, due to light radiation.
An optical recording reproducing device for recording and/or reproducing information by using an optical recording medium provided with a photosensitive layer containing a photo-responsive high-molecular compound comprising an aromatic ring in a main chain, a photo-responsive group that is geometrically isomerized by light radiation, and a liquid crystal linear mesogen group, the photo-responsive group and the linear mesogen group being respectively bonded with the aromatic ring as side chains, wherein information is recorded in the photosensitive layer by utilizing at least one of a change in absorption, a change in refractive index, and a change in shape, due to light radiation.
Dependencies are inferred from the claim text.